| 摘要 |
PROBLEM TO BE SOLVED: To improve drivability and regenerative efficiency of braking energy by finding demand driving torque on the basis of operation quantity information and present speed reduction ratio information when an acceleration operation member is operated, and suitably setting torque allocation of this demand driving torque and engine driving torque. SOLUTION: When a vehicle is operated, in an ECU 100, first of all, an operation 120 is performed on demand torque on the basis of accelerator openingθACC and enging rotating speed Ne. Next, demand driving torque, that is, impeller shaft conversion torque Top is calculated 122, and an operation 124 is performed on a tilt angleαof a pump/motor 70 from vehicle speed V and the impeller shaft conversion torque TOP. Then, an operation 126 is performed on pump/motor torque TP by the pump/motor 70 from a pressure accumulating signal PC and the tilt angleα, and engine demand torque Teo is calculated from the respective torques TOP and TP by the operation and the gear ratio. Afterwards, an operation is performed on a rack position signal according to the engine demand torque Teo and the rotating speed Ne, that is, a rack restricting signal Rmax.
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