The ECOTEC combustion system and the architecture of the new Opel 2.2 l aluminum engine have been configured to achieve low noise and exhaust emissions. This power unit, employed in Germany for the first time in the Astra Coupe, already complies with the Euro IV emissions standard. It features minimum maintenance requirements and a long operating life. The DOHC spark-ignition engine with four valves per cylinder has two chain-driven camshafts, valve gear with roller cam followers and hydraulic lash adjusters. Two chain driven balancer shafts have been integrated into the engine block. The cylinder head and block, lower crankcase, oil pan, and cylinder head cover are all made of aluminum. A modular concept makes it possible to adapt the engine effectively to different vehicle concepts and markets. (orig.) [German] Das ECOTEC-Verbrennungssystem und die Motorarchitektur des neuen 2,2-l-Aluminium-Triebwerks von Opel sind auf niedrige Geraeusch- und Abgasemissionen ...
The ECOTEC is a mass-efficient gasoline DOHC 4-valve per cylinder engine with balance shafts, chain driven camshafts and roller finger followers with hydraulic lash adjusters for valve actuation. It has lightweight aluminium components such as camcover, cylinder head, cylinder block, lower crankcase and structural oil pan. Other features include composite intake manifold and a coil-on-plug ignition cassette. The ECOTEC combustion system and engine architecture are optimized for low engine out and tail pipe emissions. It also includes several designed-in 'green' features for environmental benefits. The product design, development and validation process drew upon the best knowledge and practices available worldwide both inside and outside General Motor. The manufacturing systems were also designed by leveraging the best available knowledge around the world resulting in implementation of world class processes and error proofing to achieve the ...