Back to results
US 2004/0168661 A1Published application
Valve operating device for an internal combustion engine
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorAdolf Fischer
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorAdolf Fischer
Estimating the term…
A valve gear mechanism for an internal combustion engine includes a camshaft in a separate cylinder head for controlling the stroke of a gas shuttle valve by means of an interposed rocker arm, which is mounted in the cylinder head of a piston that performs a lifting motion of a hydraulic valve-play compensation element. The aim of the invention is to achieve a play-free surface liaison of mechanical origin between the actuating elements of the gas shuttle valve. To achieve this, the piston of the hydraulic compensation element has a device that acts on an instrument for mechanically actuating a lifting stroke in order to achieve a play-free surface liaison of the contract surfaces of the rocker arm and an additional valve gear element, whilst the valve-play compensation element is maintained hydraulically without pressure.
A valve operating device for an internal combustion engine, comprising a camshaft in a separate cylinder head of the internal combustion engine to control the stroke of a charge exchange valve with an interposed rocker arm which is journaled in the cylinder head on a reciprocating piston of a hydraulic valve clearance compensating element, wherein the piston has an arrangement for the engagement of a tool for a mechanical lifting action for a clearance-free surface-to-surface contact of surfaces of the rocker arm and of an additional valve operating element in the case of the valve clearance compensating element held without hydraulic pressure.
A method for using a valve operating device comprising the steps of:
Dependencies are inferred from the claim text.