FIELD: machine building.
SUBSTANCE: invention can be used in the internal combustion engines. Internal combustion engine comprises cylinders block head (6) having controllable engine first valve (8), first valve actuator (10), combustion chamber (7) and the working fluid closed circuit. First valve (8) is configured for the combustion chamber (7) selective opening/closing. First valve actuator (10) is functionally connected to the engine first valve (8). First valve actuator (10) comprises at least one working fluid inlet opening (11) and at least one working fluid outlet opening (12). First valve actuator (10) is located in the working fluid closed circuit. Engine (1) further comprises the cylinder block head chamber (16), which forms part of the working fluid closed loop, and is limited by the cylinder block head (6), and at least the first cylinder block head cover (17). At least one outlet opening (12) of the first valve actuator (10) is in fluid communication with the said cylinder block head chamber (16). Disclosed is the closing unit for the engine cylinder block head.
EFFECT: limiting the pressures ratio between the high pressure side and the low pressure side.
13 cl, 8 dwg
