
基本信息:
- 专利标题: STEERING SYSTEM HAVING DUAL STEERING RATIOS
- 专利标题(中):具有双向转向比的转向系统
- 申请号:US14593934 申请日:2015-01-09
- 公开(公告)号:US20160200349A1 公开(公告)日:2016-07-14
- 发明人: Harold M. Whitaker, JR. , William C. Gross
- 申请人: Harold M. Whitaker, JR. , William C. Gross
- 申请人地址: US WA Bellevue
- 专利权人: PACCAR INC
- 当前专利权人: PACCAR INC
- 当前专利权人地址: US WA Bellevue
- 主分类号: B62D5/00
- IPC分类号: B62D5/00 ; B62D5/30 ; B62D5/04 ; B62D5/06 ; B62D5/065
摘要:
A power steering system having two or “dual” steering ratios is provided. The power steering system includes a transmission having first and second gear ratios, a steering gear coupled to the transmission, and a power assist coupled to the steering gear for providing power assist to the steering system. In one embodiment, the power steering system is configured to operate with a first steering ratio, such as a “fast” ratio, during normal operating conditions of the steering system (e.g., when power-assist is functional), and is configured to operate with a second steering ratio, such as a “slow” ratio, during abnormal operating conditions of the steering system (e.g., power-assist is non-functional, partially functional, etc.). The second steering ratio of the steering system can provide a fail safe mode for the vehicle operator so that the vehicle can be safely steered to a suitable location (e.g., side of the road, etc.) during abnormal operations conditions of the steering system.
摘要(中):
提供具有两个或“双”转向比的动力转向系统。 动力转向系统包括具有第一和第二齿轮比的变速器,联接到变速器的转向齿轮以及联接到舵机的动力辅助以向转向系统提供动力辅助。 在一个实施例中,动力转向系统构造成在转向系统的正常操作条件期间(例如,当功率辅助功能时)以第一转向比例如“快速”比操作,并且被配置为操作 在转向系统的异常操作条件期间(例如,功率辅助不起作用,部分功能等),具有诸如“慢”比率的第二转向比。 转向系统的第二转向比可以为车辆操作者提供故障安全模式,使得在转向系统的异常操作状态期间,车辆可以被安全地转向适当位置(例如,道路侧面)。