INTERNAL COMBUSTION ENGINE VALVE TIMING CONTROL MECHANISM Russian patent published in 1997 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: mechanism intended for control (cut in cut out) of valves has hollow cylinder, supply, drain and overflow channels, supply valve made in form of rod with channels and shutoff cone, spring-loaded plunger partially arranged in cylinder space for travel, end piece in form of cup with bottom connected with cylinder, spring-loaded piston arranged inside end piece and forming above-piston and under-piston spaces, and stop secured on inner surface of end piece at side of its open face. Supply channel is made in end piece and piston, drain channel communicates above-piston and under-piston spaces and is partially overlapped by side surface of piston, and over flow channel is made in end piece to communicate under-piston space with ambient medium. Partition with through channel is made in end face of hollow cylinder. Guide made integral with piston is arranged partially in supply channel of end piece. Supply valve installed in through channel of partition engages with piston through its rod. Mechanism has also spring and thrust plate, the latter is secured on supply valve rod, and spring is placed between partition and thrust plate. EFFECT: improved reliability of operation. 4 cl, 4 dwg