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1. 发明申请

US20050205338A1 Power steering system for vehicle 审中-公开
标题翻译：车辆动力转向系统
公开(公告)号：US20050205338A1
公开(公告)日：2005-09-22
申请号：US11068978
申请日：2005-03-02
申请人： Kengo Okada , Yukitoshi Watanabe , Yoshimasa Mabuchi
发明人： Kengo Okada , Yukitoshi Watanabe , Yoshimasa Mabuchi
IPC分类号： B62D5/07 , B62D5/30 , B62D5/32 , B62D5/06
CPC分类号： B62D5/30 , B62D5/32
摘要： The present invention is to prevent a sub-pump from being unnecessarily operative in a normal operating state, and to effect steering assist when an engine stops. When a main pump is operative in a normal state, oil in an oil tank is supplied to a pump switching valve in a power steering unit via a main feed passage, and a power cylinder (123) and a power cylinder (13) effect steering assist for wheels by use of the oil from the main pump. In case an abnormal operation occurs on the main pump or an oil pressure decreases due to an damage on the main feed passage and the like, a pressure detecting switch detects it and sends an On-signal to a drive control unit. The drive control unit that receives the On-signal then supplies a battery voltage to the sub-pump to drive the sub-pump. The oil in the oil tank is supplied to the pump switching valve in the power steering unit via a sub-feed passage, and the power cylinder is activated to effect steering assist for the wheels.
摘要翻译：本发明是为了防止副泵在正常运行状态下不必要地工作，并且在发动机停止时实现转向辅助。当主泵在正常状态下工作时，油箱中的油通过主进给通道供给到动力转向单元中的泵切换阀，动力缸（123）和动力缸（13）通过使用来自主泵的油辅助车轮。如果在主泵上发生异常操作或由于主供给通道等上的损坏导致油压降低，则压力检测开关将其检测并将该信号发送到驱动控制单元。接收接通信号的驱动控制单元然后向副泵提供电池电压以驱动副泵。油箱中的油通过副进给通道供给到动力转向单元中的泵切换阀，并且动力缸被启动以实现车轮的转向辅助。

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