FIELD: machine building.
SUBSTANCE: invention can be used in internal combustion engines for automobiles. In a device for actuating engine exhaust valves (2), (3) loaded with valve bridge (7), hydraulically pressurised piston-cylinder unit (KZE1) is included in the power flow between the cam of the drive camshaft and one of exhaust valves (2), (3). Device has second coaxial cylinder-piston unit (KZE2). With cylinder-piston unit (KZE1), when the exhaust gas is opened by backpressure of the exhaust valve, the clearance in the valve mechanism can be adjusted to keep the exhaust valve open. With the help of second coaxial cylinder-piston unit (KZE2), which interacts with the fixed counter-support, bypass channel (7b) from the injection chambers of both cylinder-piston units (KZE1, KZE2) is regulated. Piston (15) of first cylinder-piston unit (KZE1) is spring-loaded in the installation direction by means of spring (21). Spring (21) acts on pistons (15), (16) of both cylinder-piston units (KZE1), (KZE2) without support in valve bridge (7). Disclosed is a vehicle which is driven by an internal combustion engine, in particular an industrial vehicle.
EFFECT: technical result is high reliability of operation of the device and in the absence of a gap in the valve mechanism.
7 cl, 8 dwg
