Patent ID: 6186101
Filing Date: 2001-02-13
Classification: F01L

Abstract:
A device for activating and deactivating a load change valve (12) of an internal combustion engine, said device comprising:a camshaft (42) having at least one valve cam (40) and at least one coupling cam (44);a rocker arm (14) supported on stationary engine component;said rocker arm (14) having a sensing member (38) riding on said valve cam (40) and actuating the load change valve (12);a coupling lever (46) movably connected to said rocker arm (14);said coupling cam (44) acting on said coupling lever (46) such that said coupling lever (46) is moved relative to said rocker arm (14);a coupling device (24, 26, 30, 32) for interrupting transmission of the movement of said sensing member (38) onto the load change valve (12);said coupling lever (46) cooperating with said coupling device (24, 26, 30, 32) and said coupling cam (44) such that, during a phase when said sensing member (38) rides on a base circle of said valve cam (40), a movement transmission between said sensing member (38) and the load change valve (12) is at least approximately interrupted;a catch device (50, 52) for securing a portion of said coupling lever (46) upon deflection of said coupling lever (46) by said coupling cam (44) and interrupting a movement transmission between said sensing member (38) and the load change valve (12);said coupling device (24, 26, 30, 32) comprising a positive locking engagement between said sensing member (8) and said rocker arm (14), wherein said positive locking engagement is disengaged when said coupling lever (46) is secured by said catch device (50, 52) such that said sensing member (38) is moved by said valve cam (40) relative to said rocker arm (14).