FIELD: engines and pumps.
SUBSTANCE: invention can be used in internal combustion engines. This ICE comprises exhaust gas valve (3, 4), exhaust valve seat (5), rocker (6) to displace valve seat (2) and engine braking device (2) with valve fluid control unit (29). Engine braking device (2) is arranged between exhaust valve (3) and valve seat (5) and connected to channel (9) for feed of oil circulation circuit (10). Exhaust valve (3) can be retained in mid open position at engine braking device (2) actuated. Counter support (53) serves to allow operation of valve seat stroke limiter (52). Valve gap control hydraulic mechanism (11) is arranged for exhaust valve (3). Gap control mechanism (11) is arranged between rocker (6) and seat (5) and connected with oil feed channel (9). Valve control hydraulic unit oil feed control valve (41) is connected to oil feed channel (9). Besides, is can be shut off by retainer (48) for exhaust valve gap adjustment. Counter support (53) times stroke limiter (52) with the position of valve gap control mechanism (11a) and is composed of hydraulic unit of piston cylinder.
EFFECT: higher safety and reliability.
15 cl, 2 dwg
