| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic device for an internal combustion machine to not only improve reliability but also reduce an amount of consuming energy. SOLUTION: In an internal combustion engine provided with a plurality of fuel pumps and a plurality of exhaust valves, at least one high pressure pump feeds energy from pressurized liquid pressure fluid to a hydraulically- driving device 1, such as a pump drive for a fuel pump and a hydraulic actuator for an exhaust valve. The hydraulic device is provided with at least three high pressure pumps, and at least the two pumps are driven by the shaft of the internal combustion engine and a main pump 6 wherein the rotation speed of the pump is changed in a given ratio between the rotation speed of the crank shaft of an engine and the rotation speed of the pump. At least one of the pumps described above is a control pump 7 which is electrically driven and has a regulatable discharge amount. |
