公开(公告)号：EP0810943A4

公开(公告)日：1999-05-19

申请号：EP96909818

申请日：1996-02-21

申请人： SATCON TECHNOLOGY CORP

发明人： NIMBLETT FRANCIS E JR ,  VAN SHOOR MARTHINUS

IPC分类号： B62D5/06 ,  B62D5/065 ,  B62D5/07 ,  B62D6/02

CPC分类号： B62D6/02 ,  B62D5/062 ,  B62D5/065

摘要： In the hydraulically assisted steering system disclosed herein, a hydraulic pump (11) for powering a steering servo (17) is in turn driven either from the vehicle's engine (21), through an electrically controlled clutch (29), or by an electric motor (33) which can drive the pump (11) independently of the vehicle's engine (21). A signal is provided which varies as a function of vehicles's speed and disengagement of the clutch (29) is enabled for vehicle speeds above a predeterminable threshold, thereby to reduce energy consumption. The clutch (29) is engaged, independently of vehicle speed, under high load, e.g. emergency situations.