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Engine management Engine Control

Hollow camshaft with roller relay lever and hydraulic tappets - click to enlarge!
Magnification

German version

Function

The engine control's task is to co-ordinate the inflow of the fresh air, and the outflow of the exhaust gases in such a way that during the different operational modes certain emission values, fuel consumptions, and torque requirements are met.

How it works

Except for the two-stroke engines, piston-stroke engines make use of valves for the engine control. They are driven by one or more camshaft(s). For passenger cars, the crankshaft drives the camshaft(s) in the cylinder head via the toothed belt, timing chain and spur gears or vertical shaft.For bigger trucks one camshaft is often mounted in the cylinder block and is driven by spur gears or timing chain.

Important

The speed of the crankshaft of the four-stroke engine is double compared to the camshaft.



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2001 - 2012 Copyright for programs, texts, animations and pictures: H. Huppertz - Email: harald.huppertz@t-online.de
Translator: Don Leslie - Email: lesdon@t-online.de

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