Borgwarner Inc.

Christopher Vangorder

Melissa Mei Koenig

Keith V Feldt

Howard Saxon

Alexander Moser

Steven J Roskowski

A switch valve assembly controls first and second fluid flows in a hydraulic circuit defined by a valve body and a separator plate of a valve body assembly of a hydraulic control module. The valve body defines a fluid exit. The valve body is further defined as first and second body housings. The switch valve assembly includes a piston moveable between a first position for allowing the first fluid flow to flow and a second position for allowing the first and second fluid flows to flow into the fluid exit, and a biasing member coupled to the piston and biasing the piston from the second position toward the first position. The piston presents a regulating surface oriented with respect to the first axis. The first fluid flow fluidly engages the regulating surface in a manner that biases the piston into the first position in conjunction with the biasing member.

Switch valve assembly and hydraulic control module including same

An automatic transmission having high pressure actuation and low pressure lube includes a hydraulic circuit () having a source of pressurized fluid (), an actuation circuit () that delivers pressurized fluid to actuate components of the transmission, and a cooling circuit () used to cool components of the transmission. The source of pressurized fluid includes a motor, a first pumpoperatively driven by the motor, and a second pumpselectively driven by motor. A clutch mechanismis connected between the motorand the second pumpso as to selectively engage and disengage the second pumpin driven relationship with the motorso that the second pumpselectively supplies pressurized fluid to the cooling circuitwhen the clutch mechanismis engaged.

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Ferndale, MI, United States of America

Christopher Vangorder