Engine front cover
AssigneeMechadyne PLC
InventorsTimothy Mark Lancefield, Ian Methley
Life of this patent
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Abstract
An internal combustion engine is described having a crankshaft (14) and a camshaft, the ends of which project from a front end of the engine. A hydraulically operable variable valve actuation mechanism is mounted on the camshaft at the front end of the engine for driving the camshaft. A front cover (10) that overlies the end of the camshaft projecting from the front end of the engine, includes passages (40, 42) that are connected to supply oil under pressure from an engine driven pump (16) to the variable valve actuation mechanism.
Claims6
An internal combustion engine having a crankshaft (14) and a camshaft the ends of which project from a front end of the engine, a hydraulically operable variable valve actuation mechanism at the front end of the engine for driving the camshaft, an engine driven oil pump (16) located at the front end of the engine and drive means located at the front end of the engine for transmitting torque from the crankshaft to the variable valve actuation mechanism, characterised by a front cover (10) overlying the variable valve actuation mechanism, the end of the crankshaft projecting from the front end of the engine and the torque transmitting drive means, and by oil supply passages (40, 42) formed in the front cover (10) and directly connected to the engine driven oil pump (16) and to the variable valve actuation mechanism, to enable the resistance to oil flow of the hydraulic circuit connecting the engine driven oil pump (16) to the variable valve actuation mechanism to be reduced.
Dependencies are inferred from the claim text.