| 摘要 |
<p>PROBLEM TO BE SOLVED: To regenerate damping energy without giving any feeling of wrongness to a driver by calculating requested damping force and regenerative damping energy, decreasing equivalent energy by a load-switching means and leakage from the regenerative valve of brake hydraulic loading, and generating damping force by a generation electric motor. SOLUTION: When a driver damps a vehicle, the driver steps on a brake pedal and transfers the step to a master cylinder 7. Hydraulic loading that is increased by a pressure-intensifying device that is provided at the master cylinder 7 and utilizes negative pressure being generated by an engine 1 is transferred to a regenerative valve 9. A negative pressure state is monitored by a negative pressure sensor 5 that is provided at a negative pressure path 13, and a vacuum tank 6 and a vacuum pump 4 are provided at the negative pressure supply path 13 to obtain damping force even in a state where the engine 1 has stopped, thus supplying constantly stable negative pressure even if no negative pressure is generated while the engine is at halt and enabling a brake to be operated without giving any feeling of wrongness to the driver.</p> |
