WorldWideScience

Sample records for carburetors

  1. Evaluation of the micro-carburetor

    Energy Technology Data Exchange (ETDEWEB)

    Weiss, M.F.; Hall, R.A.; Mazor, S.D.

    1981-08-01

    A prototype sonic, variable-venturi automotive carburetor, developed by Micro Carburetor Corporation, was evaluated for its effects on vehicle performance, fuel economy, and exhaust emissions. A 350 CID Chevrolet Impala vehicle was tested on a chassis dynamometer over the 1975 Federal Test Procedure, urban driving cycle. The Micro-carburetor was tested and compared with stock and modified-stock engine configurations. Subsequently, the test vehicle's performance characteristics were examined with the stock carburetor and again with the Micro-carburetor in a series of on-road driveability tests. The test engine was then removed from the vehicle and installed on an engine dynamometer. Engine tests were conducted to compare the fuel economy, thermal efficiency, and cylinder-to-cylinder mixture distribution of the Micro-carburetor to that of the stock configuration. Test results show increases in thermal efficiency and improvements in fuel economy at all test conditions.

  2. 14 CFR 23.1095 - Carburetor deicing fluid flow rate.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Carburetor deicing fluid flow rate. 23.1095 Section 23.1095 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Induction System § 23.1095 Carburetor deicing fluid flow rate. (a) If a carburetor deicing fluid system...

  3. 14 CFR 23.1097 - Carburetor deicing fluid system capacity.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Carburetor deicing fluid system capacity... Powerplant Induction System § 23.1097 Carburetor deicing fluid system capacity. (a) The capacity of each... operation. (b) If the available preheat exceeds 50 °F. but is less than 100 °F., the capacity of the...

  4. 14 CFR 23.1099 - Carburetor deicing fluid system detail design.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Carburetor deicing fluid system detail design. 23.1099 Section 23.1099 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Powerplant Induction System § 23.1099 Carburetor deicing fluid system detail design. Each carburetor...

  5. 14 CFR 29.1109 - Carburetor air cooling.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Carburetor air cooling. 29.1109 Section 29.1109 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT... cooling. It must be shown under § 29.1043 that each installation using two-stage superchargers has...

  6. 14 CFR 25.975 - Fuel tank vents and carburetor vapor vents.

    Science.gov (United States)

    2010-01-01

    ... may end at any point— (i) Where the discharge of fuel from the vent outlet would constitute a fire... carburetor with vapor elimination connections must have a vent line to lead vapors back to one of the fuel... return line must lead back to the fuel tank used for takeoff and landing....

  7. Service the Two-Piece Flo-Jet Carburetor. Fuel System. Student Manual 3. Small Engine Repair Series. First Edition.

    Science.gov (United States)

    Hill, Pamela

    This student manual, part of a small-engine repair series on servicing fuel systems, is designed for use by special needs students in Texas. The manual explains in pictures and short sentences, written on a low reading level, the job of servicing two-piece flo-jet carburetors. Along with the steps of this repair job, specific safety and caution…

  8. Replace the Carburetor Diaphragm. Pulsa-Jet Style with Automatic Choke. Fuel System. Student Manual 2. Small Engine Repair Series. First Edition.

    Science.gov (United States)

    Hill, Pamela

    This student manual, part of a small-engine repair series on servicing fuel systems, is designed for use by special needs students in Texas. The manual explains in pictures and short sentences, written on a low reading level, the job of replacing carburetor diaphragms. Along with the steps of this repair job, specific safety and caution…

  9. Carburetor Cleaning Technique and the Design of Pneumatic Oil Cleaning Machine%化油器生产清洗工艺及全气动油清洗机的研制

    Institute of Scientific and Technical Information of China (English)

    建寅力

    2011-01-01

    本文先介绍了化油器生产过程中的清洗原则、清洗工艺及设备,还介绍了一款自行研发制造的全气动油清洗机的方案和结构设计,并简要说明了基于X—D线图的气动回路设计。该文对业界有一定的参考价值。%This article first introduces the cleaning principles,techniques and equipment of the carburetor cleaning during the production process,as well as the project and structural design of a self-developed and manufactured pneumatic oil cleaning machine.Besides,it briefly introduces the design of a pneumatic circuit based on X-D diagram.For similar enterprises,this paper is of great reference value.

  10. 46 CFR 182.415 - Carburetors.

    Science.gov (United States)

    2010-10-01

    ... acceptable means of backfire flame control for gasoline engines: (1) A backfire flame arrester complying with SAE J-1928 or UL 1111 (both incorporated by reference; see 46 CFR 175.600) and marked accordingly. The... acceptable means of backfire flame control. Installation of backfire flame arresters bearing basic...

  11. Light Aircraft Piston Engine Carburetor Ice Detector/Warning Device Sensitivity/Effectiveness.

    Science.gov (United States)

    1982-06-01

    2 RF5B 1 0 0 0 0 1 SA26 0 0 0 0 1 1 SCOOTER 0 0 1 0 0 1 SPORTS TERK 1 0 1 0 0 2 STITSSALLA 0 0 0 0 1 1 ST3KR 0 1 0 0 0 1 TC45B 0 0 1 0 0 1 UH12D 0 1 0...and the wdter solubility characteristics of tre fuel. hntrained water will freeze in cril fuel and tend to stay in suspension longer since the...specific gravity of ice is approximately the same as that of aviation gasoline. c. Water in suspension may freeze and form ice crystals of sufficient size

  12. 14 CFR 29.975 - Fuel tank vents and carburetor vapor vents.

    Science.gov (United States)

    2010-01-01

    ... end at any point— (i) Where the discharge of fuel from the vent outlet would constitute a fire hazard... with vapor elimination connections must have a vent line to lead vapors back to one of the fuel tanks... line must lead back to the fuel tank used for takeoff and landing....

  13. 14 CFR 23.975 - Fuel tank vents and carburetor vapor vents.

    Science.gov (United States)

    2010-01-01

    ... will constitute a fire hazard or from which fumes may enter personnel compartments; and (7) Vents must... a separate vent line to lead vapors back to the top of one of the fuel tanks. If there is more than... line must lead back to the fuel tank to be used first, unless the relative capacities of the tanks...

  14. 化油器回火故障原因及预防%Fault reason of carburetor back fire and its precaution Ruixiang

    Institute of Scientific and Technical Information of China (English)

    吕瑞祥; 王存宝

    2002-01-01

    @@ 汽油机化油器回火是指因进气门未关闭时(不严),燃烧室内燃烧的混合气将进气管中的混合气引燃.化油器回火轻则降低汽油机的动力性能,重则引燃化油器内的燃油,造成汽油机着火而酿成重大事故.

  15. 40 CFR 86.094-25 - Maintenance.

    Science.gov (United States)

    2010-07-01

    ...-25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED..., timing, adjustment of air pump drive belt tension, lubrication of the exhaust manifold heat control valve, lubrication of carburetor choke linkage, retorqueing carburetor mounting bolts, etc.) may be performed...

  16. Tractor Mechanics: Maintaining and Servicing the Fuel System. Learning Activity Packages 20-33.

    Science.gov (United States)

    Clemson Univ., SC. Vocational Education Media Center.

    Learning activity packages are presented for instruction in tractor mechanics. The packages deal with the duties involved in maintaining the fuel system. The following fourteen learning activity packages are included: servicing fuel and air filters, servicing fuel tanks and lines, adjusting a carburetor, servicing a carburetor, servicing the…

  17. 40 CFR 86.091-7 - Maintenance of records; submittal of information; right of entry.

    Science.gov (United States)

    2010-07-01

    ... Gas-Fueled, Liquefied Petroleum Gas-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.091-7... description of the origin and selection process for carburetor, distributor, fuel system components,...

  18. 75 FR 26855 - North American Industry Classification System-Updates for 2012

    Science.gov (United States)

    2010-05-12

    .......... Game, Toy, and pt. 339930....... Doll, Toy, and Children's Game Vehicle Manufacturing. Manufacturing.......... Carburetor, pt. 336310....... Motor Vehicle Piston, Piston Gasoline Ring, and Engine and Valve Engine Parts Manufacturing. Manufacturing. 336312....... Gasoline Engine pt. 336310....... Motor Vehicle and Engine...

  19. Aircraft Icing Handbook. (Update)

    Science.gov (United States)

    1993-01-01

    pp. 68-69, 1947. Speranza, F., OThe Formation of Ice,a Rivista di Meteorologia Aeronautics, 1(2), pp. 19-30, 1937. Steiner, R. 0., "The Icing of...Deposits of Ice on Airplane Carburetors,8 (Translation) Rivista di Meteorologia Aeronautica, 4(2), pp. 38-47, 1940. Von Glahn, U. H.; Renner, C. E

  20. Attempt of lean burn of a 4 cycle gasoline engine by the aid of low pressure air assisted in-cylinder injection; Tonai kuki nenryo funsha ni yoru lean burn no kokoromi

    Energy Technology Data Exchange (ETDEWEB)

    Hatakeyama, S.; Kondo, M.; Sekiya, Y.; Murayama, T. [Hokkaido Automotive Engineering College, Hokkaido (Japan)

    1997-10-01

    Comparable performance and exhaust emission with conventional carburetor was obtained by a low Pressure air assisted in-cylinder injection system. And lean burn of idling and light load operation till A/F=70 was realized by installing a spark Plug and a reed type injection nozzle in a divided combustion chambaer of a 4 cycle gasoline engine. 2 refs., 10 figs.

  1. 40 CFR 86.1834-01 - Allowable maintenance.

    Science.gov (United States)

    2010-07-01

    ... Section 86.1834-01 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS... bolt torque, valve lash, injector lash, timing, adjustment of air pump drive belt tension, lubrication of the exhaust manifold heat control valve, lubrication of carburetor choke linkage,...

  2. Engine Performance (Section B: Fuel and Exhaust Systems). Auto Mechanics Curriculum Guide. Module 3. Instructor's Guide.

    Science.gov (United States)

    Rains, Larry

    This module is the third of nine modules in the competency-based Missouri Auto Mechanics Curriculum Guide. Six units cover: fuel supply systems; carburetion; carburetor service; gasoline engine electronic fuel injection; diesel fuel injection; and exhaust systems and turbochargers. Introductory materials include a competency profile and…

  3. Portable engine-pump assembly

    Energy Technology Data Exchange (ETDEWEB)

    Laskaris, M.A.; Broitman, K.; Teske, R.E.; Miller, D.L.; Sulmone, M.

    1991-04-30

    This patent describes an internal combustion engine adapted to operate on a running fuel of low volatility such as a kerosene based fuel or a diesel fuel. It comprises: a fuel inlet means for delivering fuel to the engine combustion chamber, means for supplying the running fuel to the fuel inlet means, and means for supplying a starting fuel having a relatively high volatility to the fuel inlet means for using in starting the engine, the means for supplying the running fuel comprising a carburetor means including a carburetor bowl, and idle duel supply passage means having an idle orifice restriction therein, a high speed fuel supply passage means having a high speed orifice restriction therein, and a fuel enrichment supply passage means constructed and arranged to bypass the high speed orifice and the idle orifice to compensate for the increased viscosity of the running fuel at extremely low temperatures by providing a substantial supply of fuel at the low temperatures.

  4. Europe Report, Science and Technology.

    Science.gov (United States)

    1986-09-29

    since just the conversion of the aircraft to hydrogen propulsion would have cost about $650 million, the project failed: there were no financial...rather practical results with hydrogen propulsion , as can now be seen in Vienna. Thus several years ago, the DFVLR, which along with the Austrian...carburetor engine covers distances of more than 500 kilometers. The series engine of the car, in turn, was not modified for hydrogen propulsion . There

  5. Direct Fuel Injector Temporal Measurements

    Science.gov (United States)

    2014-10-01

    optimize engine performance and emissions. Fuel injectors contain an actuator, pintle (or needle), and nozzle. The most common actuator is a solenoid ...Introduction Fuel injectors have a long history in metering fuel in modern engines by either port fuel injection (PFI) or direct fuel injection (DFI...Compared with a carburetor, fuel injectors have more accurate fuel delivering capability, thus giving engineers and technicians more flexibility to

  6. Fatal fulminant hepatic failure in a 'solvent abuser'.

    OpenAIRE

    McIntyre, A S; Long, R G

    1992-01-01

    The case of a 17 year old abuser of butane aerosols who developed fulminant hepatic failure after taking a proprietary engine or carburetor cleaner is described. Fatalities as a result of liver failure due to volatile hydrocarbons or solvents have not previously been reported. The likely toxins included isopropyl alcohol, methyl amyl alcohol, butylated hydroxytoluene as well as petroleum products, and evidence for their toxicity is reviewed. The possibility of increased susceptibility to hepa...

  7. Applications of Laser Diagnostics

    Science.gov (United States)

    2005-03-01

    is adapted to the intake camshaft to provide both an index of the valve timing sequence and the relative position of the valves. This signal serves...Header’ Effect • Extra Valves for Predetonator or Purge Cycles • Cheap/Mass Produced To Intake Manifold Fuel Injection or Vapor Carburetor Valve/ Camshaft ... Camshafts 0.5-64 Hz currently (per tube) 100 Hz possible • Vapor Fuels: Hydrogen, Propane, etc. • Liquid FI: Gasoline, Ethanol, JP, etc. • Off The

  8. Design of the Engine Fuel Supplying System Based on Ultrasonic Atomization%基于超声波雾化的发动机燃油供给系统设计

    Institute of Scientific and Technical Information of China (English)

    张明容; 陈进从; 程清伟; 黄烨芳

    2013-01-01

    According to the carburetor engine is of high fuel consumption,bad emission,and EFI engine is of high price,a set of fuel oil supply system,in place of the carburetor,based on ultrasonic atomization is designed.The fuel for the new system which is atomized into micron grade fog grain with ultrasonic system,increases the fuel and air mixing contact area,makes the fuel mixes more uniform.The experimental results show that the HC and CO concentration in tail gas of new system is significantly lower,and CO2 emission increases,which demonstrates that the fuel burns more fully.It achieves the effect of energy saving and emission reduction.The cost is equivalent to carburetor type.%针对化油器式摩托车发动机油耗高、排放不好,电喷式价格贵等特点,笔者设计了一套基于超声波雾化的燃油供给系统代替化油器.新系统采用超声波雾化系统提供燃油,雾化后的燃油成微米级雾粒,增大燃油与空气接触混合的面积,使燃油混合更加均匀.实验结果显示,使用新系统发动机比原化油器式发动机尾气中HC、CO浓度明显降低,CO2增大,从而表明燃油燃烧更加充分,达到节能减排的效果,成本与化油器式相当.

  9. Kajian Eksperimental Perbandingan Performansi Mesin Otto Bahan Bakar Premium dengan Bahan Bakar LPG

    OpenAIRE

    Sitorus, Jefferson

    2013-01-01

    The decreasing availability of fossil fuels led to a variety of ideas how to solve this problem. LPG (Liquefied petroleum gas) is one alternative fuel that can be used in trending engine, one of which is a gasoline engine generator sets in 4-stroke. By modifying the carburetor so the engine can work as when using gasoline. Although the performance of the machine tends to not give optimal results such as engine performance when using gasoline, but has the advantage of LPG fuel, the emissions p...

  10. Performance analysis of a spark-ignition engine, supplied by pre-atomized ethyl alcohol; Analise do desempenho de um motor de ignicao por centelha, alimentado com alcool etilico pre-vaporizado

    Energy Technology Data Exchange (ETDEWEB)

    Galib, F.; Peel, R.B.; Ismail, K.A.R. [Universidade Estadual de Campinas, SP (Brazil)

    1987-12-31

    This paper present the results of performance of a Monza engine with 1600 cm{sup 3} of cylinder capacity and 12:1 compression ratio fueled with pre-vaporized ethyl alcohol. Comparative testes were realized with the same engine using the original carburetor system for various loads conditions in order to demonstrative the advantages and disadvantages of the two methods of fuelling. The production of alcohol vapour was done by means of heat exchanger which utilizes the exhaust gas heat. The system was calculated and assembled in such a was to enable controlling the quantity of vapour necessary for all engine operational conditions. (author). 8 refs., 2 figs

  11. The Elimination of Fire Hazard Due to Back Fires

    Science.gov (United States)

    Theodorsen, Theodore; Freeman, Ira M

    1933-01-01

    A critical study was made of the operation of a type of back-fire arrester used to reduce the fire hazard of aircraft engines. A flame arrester consisting of a pack or plug of alternate flat and corrugated plates of thin metal was installed in the intake pipe of a gasoline engines; an auxiliary spark plug inserted in the intake manifold permitted the production of artificial back fires at will. It was found possible to design a plug which prevented all back fires from reaching the carburetor.

  12. COMPARISON STUDY ON PERFORMANCE AND EMISSIONS CHARACTERISTICS OF LPG AND GASOLINE IN A TWO STROKE SI ENGINE

    Directory of Open Access Journals (Sweden)

    V. GOPALAKRISHNAN

    2014-12-01

    Full Text Available In this work a single cylinder two stroke three wheeler SI engine (199.3cc, 6.2 kW and 4500 rpm was used for the test. The engine manifold was altered to run in LPG mode. The gas carburetor was used here to mix the air and LPG thoroughly. Initially the engine was operated with gasoline in carburetor mode for the constant speed of 3000 rpm at different load. Then the engine was operated with LPG mode at the same speed. The performance and emission parameters were compared with gasoline carburetion mode. The maximum brake thermal efficiency with LPG was 22.3% and that with gasoline was 20.3%. The engine could generally operate with lean mixtures with LPG due to its good mixture formation capability. The brake specific fuel consumption decreased for LPG compared to gasoline. The HC and CO levels were lower considerably at LPG mode compared to gasoline operation. High NO and exhaust gas temperature levels were the main problems with LPG.

  13. Volvo Penta 4.3 GL E15 Emissions and Durability Test

    Energy Technology Data Exchange (ETDEWEB)

    Zoubul, G.; Cahoon, M.; Kolb, R.

    2011-10-01

    A new Volvo Penta carbureted 4.3 GL engine underwent emissions and dynamometer durability testing from break-in to expected end of life using an accelerated ICOMIA marine emissions cycle and E15 fuel. Only ethanol content was controlled. All aging used splash-blended E15 fuel. Exhaust emissions, exhaust gas temperature, torque, power, barometric pressure, air temperature, and fuel flow were measured at five intervals using site-blended E15 aging fuel and certification fuel (E0). The durability test cycle showed no noticeable impact on mechanical durability or engine power. Emissions performance degraded beyond the certification limit for this engine family, mostly occurring by 28% of expected life. Such degradation is inconsistent with prior experience. Comparisons showed that E15 resulted in lower CO and HC, but increased NOX, as expected for non-feedback-controlled carbureted engines with increased oxygen in the fuel. Fuel consumption also increased with E15 compared with E0. Throughout testing, poor starting characteristics were exhibited on E15 fuel for hot re-start and cold-start. Cranking time to start and smooth idle was roughly doubled compared with typical E0 operation. The carburetor was factory-set for lean operation to ensure emissions compliance. Test protocols did not include carburetor adjustment to account for increased oxygen in the E15 fuel.

  14. Effect of Modifications to Induction System on Altitude Performance of V-1710-93 Engine III : Use of Parabolic Rotating Guide Vanes and NACA Designed Auxiliary-stage Inlet Elbow and Interstage Duct

    Science.gov (United States)

    Standahar, Ray M; Mccarty, James S

    1947-01-01

    Bench runs of a modified V-1710-93 engine equipped with a two-stage supercharger, interstage carburetor, aftercooler assembly, and backfire screens have been made at a simulated altitude of 29,000 feet to determine the effect of several induction-system modifications on the engine and supercharger performance. The standard guide vanes on the auxiliary- and engine-stage superchargers were replaced by rotating guide vanes with a parabolic blade profile. The auxiliary-stage inlet elbow and interstage duct were replaced with new units of NACA design. These modifications were made one at a time and data were obtained after each change to determine the effect of each modification. All runs were made at a constant engine speed of 3000 rpm at a simulated altitude of 29,000 feet and all changes in engine power were made by varying the speed of the auxiliary-stage supercharger.

  15. Measurement of 238U and 232Th in Petrol, Gas-oil and Lubricant Samples by Using Nuclear Track Detectors and Resulting Radiation Doses to the Skin of Mechanic Workers.

    Science.gov (United States)

    Misdaq, M A; Chaouqi, A; Ouguidi, J; Touti, R; Mortassim, A

    2015-10-01

    Workers in repair shops of vehicles (cars, buses, truck, etc.) clean carburetors, check fuel distribution, and perform oil changes and greasing. To explore the exposure pathway of (238)U and (232)Th and its decay products to the skin of mechanic workers, these radionuclides were measured inside petrol, gas-oil, and lubricant material samples by means of CR-39 and LR-115 type II solid state nuclear track detectors (SSNTDs), and corresponding annual committed equivalent doses to skin were determined. The maximum total equivalent effective dose to skin due to the (238)U and (232)Th series from the application of different petrol, gas-oil, and lubricant samples by mechanic workers was found equal to 1.2 mSv y(-1) cm(-2).

  16. The Improvement of Carburater Efficiency Using Biogas-based Venturi

    Directory of Open Access Journals (Sweden)

    Lasmi Ni Ketut

    2016-01-01

    Full Text Available The elimination of the fossil fuel subsidy by the Indonesian government has caused an increase in fuel prices, and a solution to find a relatively cheap and environmentally friendly alternative energy is needed. Biogas is one of the sources of renewable energy that has a potential to be developed, especially in farming area where the abundant animal excrement is not yet optimally used and causes environmental problems. Addressing this issue, we have developed an innovation by making a biogas and air mixer instrument through venturi pipe, using the basic theory of fluid mechanism in order to increase the use of biogas as an electricity source. Usually, biogas-based electric generators use dual fuel system such as fossil fuel and biogas to perform combustion due to the low octane contained in the biogas. By replacing the readily available manufactured venturi with the modified venturi, optimal combustion can be reached with using only single fuel of biogas. The results of the experiments show that the biogas debit on carburetor increases from 13 to 439 watts consuming biogas fuel from 0.22 to 4.96 liter/minute, respectively. The amount of combusted biogas depends on the value of the load power. Within the scope of our results, the maximum voltage reached is about 211.13 – 211.76 volts which is feasible to use for 220 volts electrical appliances

  17. Modification and tuning of diesel bus engine for biogas electricity production

    Directory of Open Access Journals (Sweden)

    Sittiboon Siripornakarachai

    2007-11-01

    Full Text Available This study is to convert and tune a bus diesel engine for electricity production in a farm using biogas as fuel. The engine under study is a Hino K-13CTI 13,000 cc 24 valve turbocharged engine coupled to a 3 phase 4 pole induction motor to produce electricity at 50 Hz. Modifications include an addition of biogas carburetor for air-fuel mixing, replacing the fuel injection system with spark ignition system, reduction of compression ratio from the original 16:1 to 8:1 using a cylinder head spacer, and modification of the turbocharger waste gate so the boost pressure can be adjusted. When the induction motor is synchronized to the power grid, the running speed of the engine is 1,500 rpm. Optimal engine efficiency was achieved at 28.6% by setting the lambda factor at 1.097, ignition timing at 54o before top dead center, and the turbocharger boost at 56 kPa. With this setting, the generator power output is 134.20 kilowatt with emission of CO and NOX being 1,154 and 896 ppm respectively.

  18. Development of stratified-charge engine by impingement of fuel jet. ; Test results with gasoline fuel. Chokufunshiki shototsu kakusan sojo kyuki kikan no kaihatsu. ; Gasoline nenryo ni yoru jikken kekka

    Energy Technology Data Exchange (ETDEWEB)

    Kato, S.; Onishi, S. (Japan Clean Engine Lab. Co. Ltd., Ishikawa (Japan))

    1991-04-25

    Development was made of direct fuel injection stratified-charge method (OSKA nethod), to make the mixture formation in the direct fuel injection engine by having fuel jet positively impinge on the impingement part, installed in the combustion chamber. In the present report, the following conclusion was obtained through experiment on gasoline fuel by a single cylinder engine with a spark ignition method, combined with the OSKA method: High compressive ratio was made adoptable by applying an OSKA method, using a single hole nozzle with low opening pressure. Due to feed air swirl, made unnecessary for the mixture formation, adoption of early injection under the high load, etc., the highest brake mean effective pressure attained to 1.04MPa, which is almost equivalent to that of carburetor type automobile gasoline engine, while the highest brake thermal efficiency did to 37.7%, which is so to that of direct fuel injection diesel engine, equal in volume. Also under the low load, obtained was a high thermal efficiency, nearing that of diesel engine. 8 refs., 9 figs., 2 tabs.

  19. PERFORMANCE AND EMISSION STUDIES ON DI-DIESEL ENGINE FUELED WITH PONGAMIA METHYL ESTER INJECTION AND METHANOL CARBURETION

    Directory of Open Access Journals (Sweden)

    HARIBABU, N.

    2010-03-01

    Full Text Available The target of the present study is to clarify ignition characteristics, combustion process and knock limit of methanol premixture in a dual fuel diesel engine, and also to improve the trade-off between NOx and smoke markedly without deteriorating the high engine performance. Experiment was conducted to evaluate the performance and emission characteristics of direct injection diesel engine operating in duel fuel mode using Pongamia methyl ester injection and methanol carburetion. Methanol is introduced into the engine at different throttle openings along with intake air stream by a carburetor which is arranged at bifurcated air inlet. Pongamia methyl ester fuel was supplied to the engine by conventional fuel injection. The experimental results show that exhaust gas temperatures are moderate and there is better reduction of NOx, HC, CO and CO2 at methanol mass flow rate of 16.2 mg/s. Smoke level was observed to be low and comparable. Improved thermal efficiency of the engine was observed.

  20. Unjuk Kerja Motor Bakar Bensin Dengan Turbojet Accelerator

    Directory of Open Access Journals (Sweden)

    Ekadewi Anggraini Handoyo

    2002-01-01

    Full Text Available One of several devices attached in an ignition engine to improve its performance is turbojet accelerator. The manufacturer claims that it will improve the engine's performance. To verify this advertisement, a research is done in Motor Bakar Laboratory in Petra Christian University. From the research done, it is found out that the device, turbojet accelerator, makes the pressure of the air incoming to the carburetor decreases while its velocity increases. Meanwhile, the performances of the engine including Brake Horse Power (BHP, torque, Brake Mean Effective Pressure (BMEP and thermal efficiency are increasing. The engine equipped with turbojet accelerator will save its fuel consumption. Abstract in Bahasa Indonesia : Salah satu alat yang ditambahkan pada motor bakar untuk menaikkan unjuk kerjanya adalah turbojet accelerator. Produsen alat ini mengatakan bahwa unjuk kerja motor bakar akan meningkat dengan pemasangan alat ini. Untuk membuktikan promosi ini dilakukan penelitian di laboratorium Motor Bakar, Universitas Kristen Petra. Hasil yang didapat dari percobaan yang dilakukan adalah bahwa turbojet accelerator menyebabkan aliran udara masuk karburator dengan lebih rendah dan kecepatan lebih tinggi. Sedang unjuk kerja yang meliputi daya BHP, Torsi, BMEP dan efisiensi termis motor bakar meningkat. Selain itu konsumsi bahan bakar menjadi lebih hemat jika motor bakar dilengkapi turbojet accelerator. Kata kunci: Turbojet accelerator, Motor bakar bensin, BHP, SFC, Torsi, Efisiensi termis.

  1. Chemical characterization of emissions from modern two-stroke mopeds complying with legislative regulation in Europe (EURO-2).

    Science.gov (United States)

    Adam, T; Farfaletti, A; Montero, L; Martini, G; Manfredi, U; Larsen, B; Santi, G De; Krasenbrink, A; Astorga, C

    2010-01-01

    In view of a new amendment to the European legislative regulation on emissions from two-stroke mopeds a study was carried out to comprehensively characterize exhaust gases of mopeds complying current EURO-2 emission standards. Three mopeds with different engine types (carburetor, direct injection, and electronic carburetion system ECS) where investigated by applying two different driving cycles, the legislative cycle ECE47 and the worldwide motorcycle test cycle WMTC. Thereby, particulate matter (PM), regulated compounds, carbonyls, volatile hydrocarbons (VOC), and particle-associated polyaromatic hydrocarbons (PAH) were analyzed and ozone formation potentials (OFP) as well as toxicity equivalents (TEQ) determined. The ECE47 emission factors for almost all species and moped types were much higher in the nonregulated, prior cold phase than in the hot phase, which is considered for legislation. Great differences for the mopeds could be observed for NO(x), VOC, and PM, whereas discrepancies between the driving cycles ECE47 and WMTC were smaller. In addition, a positive influence on exhaust composition caused by technical modifications of the ECS engine was determined. Results indicate that regulation of total hydrocarbons (THC) alone might not be sufficient to regulate PM, especially for direct injection engines. Moreover, recommendations for a revised future test protocol are demonstrated and discussed, whereby the cold phase and the hot phase are taken into account.

  2. Effect of the operating variables of a fluid catalytic cracking unit (FCC) on the naphtha gum formation; Efeito das variaveis operacionais de uma unidade de craqueamento catalitico (FCC) na formacao da goma na nafta

    Energy Technology Data Exchange (ETDEWEB)

    Mattos, Leandro Generoso de [PETROBRAS, Betim, MG (Brazil). Unidade de Negocio Refinaria Gabriel Passos (REGAP). Gerencia de Hidrotratamento e Coque]. E-mail: leandrogm@petrobras.com.br; Almeida, Gustavo Matheus de [Universidade de Sao Paulo (USP), SP (Brazil). Escola Politecnica. Dept. de Engenharia Quimica]. E-mail: gustavo@lscp.pqi.ep.usp.br; Oliveira, Eder Domingos de; Cardoso, Marcelo [Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG (Brazil). Dept. de Engenharia Quimica]. E-mails: eder@deq.ufmg.br; mcardoso@deq.ufmg.br

    2006-12-15

    One of the main problems brought by gasoline combustion in vehicles is the deposition of gum in the fuel system. Gum, though soluble in gasoline, appears in the form of a viscous residue after gasoline has evaporated. The carbon deposits coating carburetors, nozzles, collector pipes, intake valves and combustion chambers affect the car's steering capacity, lower the engine's performance and increase the emission of exhaust gas. Given the sort of refining used in Brazil, the content of naphtha resulting from catalytic cracking in gasoline coming from refineries is quite significant. The chains resulting from catalytic or thermal cracking processes have a strong tendency to form gum. In Fluid Catalytic Cracking (FCC), a complex network of chemical reactions takes place, which can either be catalytic or thermal. Principal Component Analysis techniques (PCA), stepwise regression and genetic algorithms have been used to select the operating variables of FCC that will bear the most influence on gum formation. An ARN (Artificial Neural Networks) software tool was also used to anticipate gum forming from operating variables selected by means of the above mentioned techniques. The results achieved in forecasting gum forming in cracked naphtha lead us to believe that the data analysis methodology used was suitable. It is possible to forecast potential gum through seven variables with a 10% Mean Relative Error (MRE) and a 1.75 g/100 mL Mean Absolute Error (MAE) with a linear correlation coefficient of 0.844; or through eight variables with an 11% MRE and a 1.93 g/100 mL MAE with a linear correlation coefficient of 0.829. In the first case, the methodology employed to reduce variables was stepwise regression, and in the second, genetic algorithms. (author)

  3. ITER1O kA高温超导电流引线测试装置低温系统的研究%Cryogenic System Development for Test Facility of 10 kA High-Temperature-Superconductor Current Lead in International Thermonuclear Experimental Reactor

    Institute of Scientific and Technical Information of China (English)

    倪清; 毕延芳; 丁开忠; 冯汉升; 周挺志; 沈光; 刘承连; 黄雄一; 宋云涛

    2011-01-01

    The cryogenic system,dedicated to the testing facility of the 10 Ka high-temperature-superconductor current lead (HTS-CL) in international thermonuclear experimental reactor,has been successfully developed. The cryogenic system includes a 500W/4.5K helium refrigerator, a vacuum dewar, cryogenic modules (cryogenic control valves, sub-cooler, electrical heaters, and thermal shields) ,carburetors,a set of cryogenic pipelines,and control unit. The discussions focused on the technical requirements and the design considerations: such as the design of vacuum Dewar and the sub-cooler, and the scheme of the cooling circuit. The field-test results of the newly-developed cryogenic system show that it is capable of doing a good job.%为ITER CC 10 kA高温超导电流引线服务的低温性能测试装置已研制完成,并成功运行.其低温系统主要由500W/4.5 K氦制冷机,真空杜瓦,低温组件(低温阀门,过冷槽,管道加热器,热防护层),汽化器及低温传输管线等部分组成.本文对真空杜瓦和过冷槽进行设计,并讨论该低温系统的冷却流程方案,最后通过电流引线10 kA稳态实验结果对低温系统的运行效果进行分析,结果表明该低温系统运行稳定,能满足ITER CC电流引线的测试需要.

  4. Real-world vehicle emission factors in Chinese metropolis city--Beijing

    Institute of Scientific and Technical Information of China (English)

    WANG Qi-dong; HE Ke-bin; HUO Hong; James Lents

    2005-01-01

    The dynamometer tests with different driving cycles and the real-world tests are presented. Results indicated the pollutants emission factors and fuel consumption factor with ECE15 + EUDC driving cycle usually take the lowest value and with real world driving cycle occur the highest value, and different driving cycles will lead to significantly different vehicle emission factors with the same vehicle.Relative to the ECE15 + EUDC driving cycle, the increasing rate of pollutant emission factors of CO, NOx and HC are - 0.42-2.99,- 0.32-0.81 and - 0.11-11 with FTP75 testing, 0.11-1.29, - 0.77-0.64 and 0.47-10.50 with Beijing 1997 testing and 0.25-1.83,0.09-0.75 and - 0.58-1.50 with real world testing. Compared to the carburetor vehicles, the retrofit and MPI + TWC vehicles' pollution emission factors decrease with different degree. The retrofit vehicle (Santana) will reduce 4.44%-58.44% CO, - 4.95%-36.79% NOx, - 32.32%-33.89% HC, and - 9.39%-14.29% fuel consumption, and especially that the MPI + TWC vehicle will decrease CO by 82.48%-91.76%, NOx by 44.87%-92.79%, HC by 90.00%-93.89% and fuel consumption by 5.44%-10.55%. Vehicles can cause pollution at a very high rate when operated in high power modes; however, they may not often operate in these high power modes.In analyzing vehicle emissions, it describes the fraction of time that vehicles operate in various power modes. In Beijing, vehicles spend 90% of their operation in low power modes or decelerating.

  5. The Research of Piezoelectricity ACV and Control Technology%压电补气阀及其控制技术研究

    Institute of Scientific and Technical Information of China (English)

    刘宁庄; 杨建伟; 王成利

    2012-01-01

    This paper introduces the basic work principle of electronic carburetor and mechanical structure of core component piezoelectric ACV. By its piezoelectric equation, the theory analysis of piezoelectric effect, according to the actual size calculated displacement and torque, and through the actual measure based on the test condition of 100V & 15Hz PWM control waveform, the piezoelectric ACV appears a good stability and consistency. It meets the intelligent idle air compensation better. The reliability of design principle and structure of the piezoelectric ACV has been verified and passed the volume production, meanwhile it has satisfied the needs of the most tricycles of the emission standard (CHINA stage M ).%介绍了电控化油器的基本工作原理及压电补气阀的机械结构及原理,通过对其压电方程、压电效应的理论分析,依据实际的双晶片尺寸计算出了补气阀的位移及力矩,并通过实际的测试,发现在100V、15Hz的PWM控制波形驱动下,该压电补气阀呈现出了良好的稳定性和一致性,较好地满足了电控化油器中对怠速智能补气的需求.该压电补气阀的设计原理及结构的可靠性验证已通过批量测试,并已满足绝大多数三轮车对国Ⅲ排放的要求.

  6. Information draft on the development of air standards for methanol

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-01-01

    Methanol is a clear, colourless. very mobile liquid with a slightly alcoholic odour in pure form, but a repulsive pungent odour in crude form. Methanol is the raw material in the production of many gasoline additives, is used as a solvent or antifreeze in paint strippers, aerosol spray paints, wall paints, carburetor cleaners, and car windshield washer compounds. Methanol is one of the top pollutants by release quantities in Ontario, the highest release being generated by the pulp and paper industry. Other large emissions come from the plastics and synthetic resin industry. Total release to the air in Canada was 3,668 tonnes in 1996 and the top ten methanol emitting facilities were in Ontario. Methanol is readily absorbed through inhalation, ingestion and skin exposures. Once absorbed, it is oxidized to formaldehyde and then to formic acid. Common symptoms of exposure are visual disturbances, dizziness, nausea, vertigo, pain in the extremities, and headaches. No information was found as to the carcinogenicity of methanol to humans or animals. Current Ontario half-hour POI standard for methanol is 84,000 microgram/cubic meter and the 24-hour AAQC is 28,000 microgram/cubic meter. Both values were established more than 20 years ago. Review of relevant literature, summarized in this report, indicates that five US states have promulgated air quality guidelines or reference exposure levels for methanol, based on occupational exposure limits. The US Environmental Protection Agency is currently reviewing its reference concentration value for methanol. The World Health Organization and the Canadian federal government have not set air quality guidelines for methanol. 37 refs., 1 tab., appendix.

  7. Research and Test of the Electronic Fuel Semi-Direct Injected Two-Stroke Gasoline Engine%电控半直接喷射二冲程汽油机的研究与试验

    Institute of Scientific and Technical Information of China (English)

    罗滇生; 钱耀义; 于秀敏; 李云清

    2001-01-01

    介绍了二冲程汽油机 上采用的电控燃油喷射技术,包括燃油喷射系统的设计与喷油器的选择方法,以及喷油器安 装位置的确定方法。研制了一套可以适用于二冲程汽油机的电控燃油喷射系统的开发装置。 试验表明:喷油时刻对于降低燃油消耗率影响很大,小负荷时必须对喷油时刻进行精确控制 ;采用电控低压半直接喷射系统后,发动机在全负荷时的燃油消耗率下降显著,同时功率与 扭矩也稍有增加。%The electronic injection technology for two stroke gasoline engine,which com prises the layout of electronic fuel injection system and the choosing method an d fixed position of fuel injector were introduced in this paper.The research dev ice of electronic injection system for two-stroke engine was designed.The dynam ometer test results showed that the injection timing had a large effect on the f uel consumption and it must be accurately and precisely controlled,when the engi ne was working at low load.As the semi-direct fuel injection system was used,th e fuel consumption rate was obviously decreased at full load in comparison with the carburetor two-stroke engine,and the power and torque had a sli ght increasing.

  8. New energy-saving and environmentally friendly technologies for buses and trucks; Nieuwe energiezuinige en milieuvriendelijke technologien voor bussen en vracthtwagens

    Energy Technology Data Exchange (ETDEWEB)

    Craps, R.; De Keukeleere, D.; Lenaers, G.

    1998-09-01

    The point of departure was the statement that people find public transport buses highly polluting. A lot of attention went to the advantages and the disadvantages of buses and trucks on liquefied petroleum gas (LPG) and natural gas. These fuels don`t cause any particle emissions from the combustion process. To quantify the other environmental advantages of gas technology, the Flemish Institute for Technological Research (VITO) carried out measurements of different bus technologies. Fuel consumption, emission of nitrogen oxides, carbon monoxides and hydrocarbons of 8 buses were measured in the Brussels traffic. 3 technologies of the early nineties were taken as a reference: the Euro-1 diesel, the current Brussels public transport company natural gas bus and a LPG bus. Comparisons were made with the modern diesel bus (Euro-2) and the newest buses on natural gas and LPG. To achieve minimal emissions, the best available technology for buses on natural gas or LPG is multipoint injection, the constructors of engines for heavy-duty traffic are changing from carburetor to fuel injection. The best available gas technologies has emissions that can be 50 to 95 per cent lower than the most modern diesel bus. Users mentioned problems at the introduction of vehicles on gas, such as lower reliability and availability. The cost price continues to be a disadvantage of buses and trucks on gas. The extra consumption of fuel doesn`t necessarily imply higher costs. Often fuel suppliers and distributors offer a favourable unit price, which includes the cost for the infrastructure. The purchase price of the vehicle remains higher and the workplaces must be adjusted for maintenance and repairs of vehicles on gas. The bus or truck on diesel is very reliable and cheaper to use than a similar vehicle on gas. The environmental perspectives are much less marked. Heavy-duty traffic emits nitrogen oxides and particles. With respect to these harmful substances in particular, constructors must

  9. The pilatus unmanned aircraft system for lower atmospheric research

    Directory of Open Access Journals (Sweden)

    G. de Boer

    2015-11-01

    Full Text Available This paper presents details of the University of Colorado (CU Pilatus unmanned research aircraft, assembled to provide measurements of aerosols, radiation and thermodynamics in the lower troposphere. This aircraft has a wingspan of 3.2 m and a maximum take off weight of 25 kg and is powered by an electric motor to reduce engine exhaust and concerns about carburetor icing. It carries instrumentation to make measurements of broadband up- and downwelling shortwave and longwave radiation, aerosol particle size distribution, atmospheric temperature, relative humidity and pressure and to collect video of flights for subsequent analysis of atmospheric conditions during flight. In order to make the shortwave radiation measurements, care was taken to carefully position a high-quality compact inertial measurement unit (IMU and characterize the attitude of the aircraft and it's orientation to the upward looking radiation sensor. Using measurements from both of these sensors, a correction is applied to the raw radiometer measurements to correct for aircraft attitude and sensor tilt relative to the sun. The data acquisition system was designed from scratch based on a set of key driving requirements to accommodate the variety of sensors deployed. Initial test flights completed in Colorado provide promising results with measurements from the radiation sensors agreeing with those from a nearby surface site. Additionally, estimates of surface albedo from onboard sensors were consistent with local surface conditions, including melting snow and bright runway surface. Aerosol size distributions collected are internally consistent and have previously been shown to agree well with larger, surface-based instrumentation. Finally the atmospheric state measurements evolve as expected, with the near-surface atmosphere warming over time as the day goes on, and the atmospheric relative humidity decreasing with increased temperature. No directional bias on measured

  10. The Use of E100 to Fuel a Used 4-Stroke Motorcycle

    Directory of Open Access Journals (Sweden)

    T. Suthisripok

    2012-01-01

    Full Text Available Problem statement: Though ethanol and gasohol are proved to be used as alternative fuels in vehicles, 4-stoke motorcycles used nationwide mainly consumed gasoline 91/95. Approach: The motorcycle tested, the used Honda Wave125 model, was properly tuned at the rich relative air-fuel ratio (λ 0.85, which theoretically gave the maximum power output. For the use of E100, the engine required richer air-fuel mixture condition, the main nozzle and idle nozzle sizes were therefore increased from the sizes used for gasoline91; by 21.4% from 0.78 mm for the main nozzle and 76% from 0.35 mm for the idle nozzle. Due to having three times higher in heat of vaporization, the stronger current ignition coil was used instead. This eased the engine starting without any trace amount of gasoline. The ignition timing was advanced by about +9Ocrank angle to suit E100’s high octane number of 107. Results: The performance test results of E100 on dynamometer showed that the maximum power output was 9 hp@7428 rpm and the maximum torque was 11 Nm@4728 rpm. Comparing to the use of gasoline91, the engine performance decreased 12-15% over the speed range of around 4000-8000 rpm. From the road tests; city road test and long driving test, at the average speed of 60 km h-1 the average consumption rate of E100 was about 25-28% more. The calculated fuel conversion efficiency of E100 was 38.2% higher. For emission measurements when using E100, the concentrations of CO and of HC were 3.14 vol % and 2143 ppm. Those were higher than in the exhaust of the use of gasoline91 but below the regulations which required 1.0 condition. Since a particular instrument was not available, aldehyde concentration in the E100’s emission was not measured. Conclusion: It clearly confirmed that E100, 95.5 vol % ethanol, can be effectively used as an alternative fuel in used 4-stroke motorcycles whose carburetors were purposely designed for the use of gasoline91. If the engines were properly tuned up

  11. The Pilatus unmanned aircraft system for lower atmospheric research

    Science.gov (United States)

    de Boer, Gijs; Palo, Scott; Argrow, Brian; LoDolce, Gabriel; Mack, James; Gao, Ru-Shan; Telg, Hagen; Trussel, Cameron; Fromm, Joshua; Long, Charles N.; Bland, Geoff; Maslanik, James; Schmid, Beat; Hock, Terry

    2016-04-01

    This paper presents details of the University of Colorado (CU) "Pilatus" unmanned research aircraft, assembled to provide measurements of aerosols, radiation and thermodynamics in the lower troposphere. This aircraft has a wingspan of 3.2 m and a maximum take-off weight of 25 kg, and it is powered by an electric motor to reduce engine exhaust and concerns about carburetor icing. It carries instrumentation to make measurements of broadband up- and downwelling shortwave and longwave radiation, aerosol particle size distribution, atmospheric temperature, relative humidity and pressure and to collect video of flights for subsequent analysis of atmospheric conditions during flight. In order to make the shortwave radiation measurements, care was taken to carefully position a high-quality compact inertial measurement unit (IMU) and characterize the attitude of the aircraft and its orientation to the upward-looking radiation sensor. Using measurements from both of these sensors, a correction is applied to the raw radiometer measurements to correct for aircraft attitude and sensor tilt relative to the sun. The data acquisition system was designed from scratch based on a set of key driving requirements to accommodate the variety of sensors deployed. Initial test flights completed in Colorado provide promising results with measurements from the radiation sensors agreeing with those from a nearby surface site. Additionally, estimates of surface albedo from onboard sensors were consistent with local surface conditions, including melting snow and bright runway surface. Aerosol size distributions collected are internally consistent and have previously been shown to agree well with larger, surface-based instrumentation. Finally the atmospheric state measurements evolve as expected, with the near-surface atmosphere warming over time as the day goes on, and the atmospheric relative humidity decreasing with increased temperature. No directional bias on measured temperature, as might

  12. Pollution control technology for motorcycle emission based on ultrasonic atomization%基于超声波雾化的摩托车排放污染控制技术研究

    Institute of Scientific and Technical Information of China (English)

    黄堪丰; 张明容

    2013-01-01

    Aiming at increasingly serious problem of motor vehicle exhaust emission pollutants influences on the environment,the principle of ultrasonic high-frequency oscillation was used and the fuel was atomized into ultra fine particles in ultrasonic nebulizer,which is formed the uniform combustible mixture with the fresh air,According to the different speed and working conditions,regulating valve opening was adjusted,to achieve different air-fuel ratio,and then it can full combustion in the engine combustor.By ultrasonic atomizing fuel supply system test,reliable test results were obtained.The results indicate that,it can effectively reduce the carburetor motorcycle exhaust emissions of pollutants (HC、CO),and improve fuel economy,to achieve the requirements of energy saving and emission reduction.%针对机动车尾气排放污染物对环境影响日趋严重的问题,在超声波雾化器中,根据超声波高频振荡的原理,将燃油雾化成了超微粒子,将深度雾化的燃油雾粒与新鲜空气完全混合形成了浓度适当的可燃混合气,并根据不同的转速和工况调节阀门的开度,实现了不同的空燃比,使其在发动机燃烧室中充分燃烧,通过超声波雾化燃油供给系统的测验,取得了可靠的试验结果.研究结果表明,该技术能有效地降低化油器式摩托车尾气排放中HC、CO等污染物的排放量,提高燃油经济性,达到节能减排的目的.

  13. Design and experiments for controller of UEGO sensor based on robust PID algorithm%基于鲁棒PID算法的UEGO控制器的设计与实验

    Institute of Scientific and Technical Information of China (English)

    张媛媛; 徐科军; 黄云志; 陈佳臻; 滕勤; 谈建

    2011-01-01

    宽域废气氧(Universal Exhaust Gas Oxygen,UEGO)传感器可以在很宽的空燃比范围内提供有效的氧含量信号,它的结构特殊,必须配以控制器才能使用.利用鲁棒PID算法控制UEGO控制器中象电压的大小和方向,并将泵电压反馈作用在UEGO传感器上.检测UEGO传感器上的泵电流,并设计非线性校正环节对其进行校正,校正输出值即为过量空气系数(A).利用dSPACE实时仿真系统实现UEGO控制器,并在汽车化油器发动机台架上进行相关实验.实验数据表明,在λ值静态和动态变化时,UEGO控制器都具有良好的鲁棒性和运行性能,响应快速且精度良好.%Universal exhaust gas oxygen (UEGO) sensor can effectively provide the information of oxygen content in wide scope of air-fuel ratio. Due to its special structure, it cannot work normally without a controller. Therefore a robust PID algorithm was applied to the controller of UEGO sensor for controlling the value and direction of the pump cell voltage and exerting a feedback control action on the sensor. The pump cell current was detected and a nonlinear corrector for the pump cell current was designed, which results in an excess air factor(λ ). UEGO controller was implemented by means of dSPACE real time simulation system, and experiments were conducted on a carburetor engine. Experimental results show that the UEGO controller has strong robustness and good running performance. It can achieve quick response and precision measurement when λ changes in static and dynamic modes.