公开(公告)号：US20130232962A1

公开(公告)日：2013-09-12

申请号：US13717102

申请日：2012-12-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Carlos E. Marin ,  Casie M. Bockenstette ,  Paul G. Otanez ,  Zhen J. Zhang ,  Min K. Kim ,  Kristopher J. Kokko

IPC: F15B9/00

CPC classification number: F15B9/00 ,  B60Y2400/14 ,  F16H61/0025 ,  F16H2061/0034 ,  F16H2312/14

Abstract: A hydraulic control system and method for controlling a hydraulic system of a vehicle powertrain is provided, which includes an accumulator arranged to accumulate fluid when an engine is turned on, to retain fluid when the engine is turned off, and to discharge fluid to the transmission when the engine is restarted. The accumulator is actively filled through a controlled valve, and it may also be filled passively, for example, via ball check-valve. The method of controlling the hydraulic system includes providing a fluid line pressure to the transmission by opening a fluid passage when the engine is turned on; opening a valve to actively accumulate fluid from the fluid line pressure into an accumulator; closing the valve to retain the fluid in the accumulator; and discharging the fluid from the accumulator to the fluid passage when the engine is restarted.

Abstract translation: 提供了一种用于控制车辆动力总成的液压系统的液压控制系统和方法，该液压控制系统和方法用于控制车辆动力总成的液压系统，该液压控制系统和方法包括：当发动机被接通时，蓄能器设置成积存液体，以在发动机关闭时保持流体， 引擎重启时。 蓄能器通过受控阀主动填充，并且也可以被动地填充，例如通过球止回阀。 控制液压系统的方法包括当发动机接通时通过打开流体通道来向变速器提供流体管路压力; 打开阀门以将液体从流体管线压力积聚到蓄能器中; 关闭阀门以将流体保持在蓄能器中; 并且当发动机重新启动时将流体从蓄能器排出到流体通道。