| 摘要 |
A hydraulic engine-starting system for cranking and starting an engine for a vehicle having automatically stopping and starting functions by a hydraulic motor. A hydraulic pressure that operates a hydraulic clutch of a transmission is raised promptly by using a hydraulic motor. The hydraulic motor is driven by a hydraulic pressure supplied thereto through a first oil passage from a hydraulic motor-driving device including an oil pump, an accumulator and a solenoid valve, thereby starting the engine. A transmission is disposed in the middle of a second oil passage for returning an oil discharged from the hydraulic motor to the hydraulic motor-driving device. Thus, the hydraulic pressure in the transmission can be raised simultaneously with the start of the engine to enable the engagement of a hydraulic clutch, thereby starting the vehicle promptly, while avoiding generating a shock from the engagement of the hydraulic clutch.
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