摘要 |
A hydraulic pump is mounted to a cylinder block of an internal combustion engine and powered by said engine, and a hydraulic motor for operating an engine accessory, such as alternator, compressor of air conditioner and the like, is mounted to the cylinder block and driven by a highly pressurized oil fed by the hydraulic pump. The cylinder block is formed with an oil flow passage through which the highly pressurized oil is conveyed from the hydraulic pump to the hydraulic motor. An oil return passage is provided for returning the oil from the hydraulic motor to the hydraulic pump. If desired, the oil return passage may be defined in the cylinder block.
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