《奥迪AUDI 全系列发动机》.pdf

1.6-litre R4 FSI engine Oil circuit Controlled Duocentric oil pump A closed-loop Duocentric oil pump is employed. Oil pressure is regulated by the control spring and It maintains a near-constant oil pressure over the control ring integrated in the oil pump. entire RPM range. Housing External rotor Input shaft with internal rotor Housing cover Drive gear Control ring Control spring Oil intake manifold 327_065 Crankshaft Duocentric oil pump drive The oil pump is driven by the crankshaft via a separate timing chain. The chain is tensioned by a mechanical chain tensioner. Drive chain Mechanical Reference chain tensioner For a functional description of the Duocentric oil pump, please refer to SSP 296 - The 1.4-litre and 1.6-litre FSI engines with camshaft timing chain.