VALVE MECHANISM FOR AN INTERNAL COMBUSTION ENGINE

专利名称：VALVE MECHANISM FOR AN INTERNAL

COMBUSTION ENGINE

发明人：JOSENHANS, ARMIN,SCHWARZENTHAL,

DIETMAR,SPIEGEL, LEO

申请号：EP02769980.0申请日：20020822公开号：EP1427918A1公开日：20040616

摘要：The invention relates to a valve mechanism for an internal combustion engine,comprising at least two inlet and/or outlet valves (EV1, EV2, AV1, AV2) per cylinder whichcan be activated by the inlet and/or outlet camshaft (8); in addition to lift transmissionelements (4) which are arranged between the camshafts (6,7) of the inlet and/or outletcamshaft, and means for altering the valve lift of the inlet and/or outlet valves. At leasttwo inlet valves and/or two outlet valves per cylinder cooperate with at least two partialcams (24, 25, 26) having two different lift curves, and the lift transmission elements (4) ofthe gas exchange valves are provided with at least two lift elements (22, 23) whichrespectively cooperate with the partial cams (24, 25, 26) and with the hydraulic supplylines for switching purposes. According to the invention, the supply lines (34, 44) forswitching a first inlet or outlet valve (EV1, AV2) are separate from the supply lines (40, 48)for switching a second inlet or outlet valve (EV2, AV2), whereby a first inlet or outlet valve(EV1, AV1) can be switched independently from the second inlet or outlet valve (EV2,AV2). As a result two-step valve switching can be achieved in a simple manner.

申请人：DR.ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT

地址：Porscheplatz 1 70435 Stuttgart DE

国籍：DE

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