公开(公告)号：US20160146271A1

公开(公告)日：2016-05-26

申请号：US14940521

申请日：2015-11-13

Applicant: BorgWarner Inc.

Inventor： Donn W. NIFFENEGGER ,  Larry A. PRITCHARD

IPC: F16D48/02

CPC classification number: F16H63/3023 ,  F16D25/0638 ,  F16H61/0025 ,  F16H63/04 ,  F16H63/3069

Abstract: A vehicle powertrain hydraulic system (10) includes a clutch (12), a piston (62) disposed in a cylinder (60) to drive a shift selector (14), a pump (82) in fluid communication with a fluid supply (86) to pressurize fluid, and first and second fluid pressure lines (91, 92) from the pump to first and second sides of the piston. A third fluid pressure line (93) may extend to the clutch from the cylinder in a location between the first and second sides of the piston, such that the piston also may be a valve to control fluid flow to the clutch. The pump may be reversible and coupled to an electric motor (80), and a centrifugal regulator (84) may be coupled to the motor and in fluid communication with the first and second pump pressure lines to regulate fluid pressure therein. A related operational method is also disclosed.

Abstract translation: 车辆动力系液压系统（10）包括离合器（12），设置在气缸（60）中以驱动换挡选择器（14）的活塞（62），与流体供应器（86）流体连通的泵 ）将流体和从泵的第一和第二流体压力管线（91,92）加压到活塞的第一和第二侧。 第三流体压力管线（93）可以在活塞的第一和第二侧之间的位置处从气缸延伸到离合器，使得活塞也可以是阀以控制流到离合器的流体。 泵可以是可逆的并且耦合到电动机（80），并且离心调节器（84）可以联接到电动机并与第一和第二泵压力管线流体连通以调节其中的流体压力。 还公开了相关的操作方法。