公开(公告)号：US20140298798A1

公开(公告)日：2014-10-09

申请号：US13856733

申请日：2013-04-04

Applicant: CATERPILLAR INC.

Inventor： Daryl James Belshan ,  Beau Daniel Kuipers ,  Edward William Mate ,  Gene Richard St. Germain

IPC: B62D5/06

CPC classification number: B62D5/06 ,  B62D5/09 ,  B62D5/30 ,  B62D5/32 ,  F15B9/08 ,  F15B20/00

Abstract: A steering control system includes a steering circuit, a primary control circuit and a redundant control circuit. The primary control circuit includes primary proportional control valves, and a primary pilot valve having a thermal bleed of pilot fluid to warm the primary pilot valve when not operating to control the steering circuit. The redundant control circuit includes secondary proportional control valves, and a pressure reducing valve having a thermal bleed orifice allowing fluid flow to warm the pressure reducing valve when not operating to control the steering circuit. The thermal bleeds may also flow past the proportional control valves to raise their temperatures. The circuits of the steering control system are contained in a single valve group housing.

Abstract translation: 转向控制系统包括转向电路，主控制电路和冗余控制电路。 主控制电路包括初级比例控制阀和主导向阀，当未操作以控制转向回路时，主导阀具有先导流体的热泄放以加热主导阀。 冗余控制电路包括二次比例控制阀，以及具有热泄漏孔的减压阀，当不操作以控制转向回路时允许流体流动来加热减压阀。 热过滤器也可能流经比例控制阀以升高其温度。 转向控制系统的回路包含在单个阀组壳体中。

公开(公告)号：US09248854B2

公开(公告)日：2016-02-02

申请号：US13856733

申请日：2013-04-04

Applicant: Caterpillar Inc.

Inventor： Daryl James Belshan ,  Beau Daniel Kuipers ,  Edward William Mate ,  Gene Richard St. Germain

IPC: F16D31/02 ,  B62D5/06 ,  F15B9/08 ,  F15B20/00 ,  B62D5/32 ,  B62D5/09 ,  B62D5/30

CPC classification number: B62D5/06 ,  B62D5/09 ,  B62D5/30 ,  B62D5/32 ,  F15B9/08 ,  F15B20/00

Abstract: A steering control system includes a steering circuit, a primary control circuit and a redundant control circuit. The primary control circuit includes primary proportional control valves, and a primary pilot valve having a thermal bleed of pilot fluid to warm the primary pilot valve when not operating to control the steering circuit. The redundant control circuit includes secondary proportional control valves, and a pressure reducing valve having a thermal bleed orifice allowing fluid flow to warm the pressure reducing valve when not operating to control the steering circuit. The thermal bleeds may also flow past the proportional control valves to raise their temperatures. The circuits of the steering control system are contained in a single valve group housing.

Abstract translation: 转向控制系统包括转向电路，主控制电路和冗余控制电路。 主控制电路包括初级比例控制阀和主导向阀，当未操作以控制转向回路时，主导阀具有先导流体的热泄放以加热主导阀。 冗余控制电路包括二次比例控制阀，以及具有热泄漏孔的减压阀，当不操作以控制转向回路时允许流体流动来加热减压阀。 热过滤器也可能流经比例控制阀以升高其温度。 转向控制系统的回路包含在单个阀组壳体中。