发明名称 |
Hydraulic wheel brake system |
摘要 |
A hydraulic wheel brake system including a plurality of brakes and a hydraulic brake controller. The brakes includes wheel cylinders corresponding respectively to each wheel. The hydraulic brake controller includes a pump device, and a pump and valve controller. At least one pump included in the pump device is reversible. By controlling the pump and valve controller the pump increases brake fluid pressure in the brake during braking and the brake fluid pressure is reduced through the pump when it is required to be reduced. The hydraulic brake controller has a normal-open solenoid valve between a reservoir and the brake. The normal-open solenoid valve allows the brake fluid to flow when an electric current is not supplied. The hydraulic brake controller has also a normal-close solenoid valve between the reservoir and the brake. The normal-close solenoid valve prevents the brake fluid from flowing when an electric current is not supplied.
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申请公布号 |
US6402264(B1) |
申请公布日期 |
2002.06.11 |
申请号 |
US19990289062 |
申请日期 |
1999.04.12 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OTOMO AKIHIRO |
分类号 |
B60T8/40;(IPC1-7):B60T8/42 |
主分类号 |
B60T8/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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