Borgwarner Inc.

Keith V Feldt

Braman C Wing

Adam Bruce

Larry A Pritchard

Chris D Thomas

Mark M Wigsten

Chad M McCloy

Melissa Mei Koenig

Mark Buchanan

Jeremy Cradit

Thaddeus Kopp

Alexander Moser

John H Rode

Thad Kopp

Christopher Vangorder

Jonas Adler

Jason Moss

Chris Pluta

Peizhang Tu

Christopher S Vangorder

A variable cam timing phaser of a variable cam timing system includes a housing and a rotor moveable with respect to the housing. The rotor and the housing define advance and retard chambers. The variable cam timing phaser also includes a control valve assembly. The control valve assembly includes a valve housing defining a valve housing interior, a supply port, first and second working ports, and an exhaust port. The control valve assembly also includes a piston moveable for controlling flow of the hydraulic fluid through the valve housing interior. The exhaust port is fluidly connectable with a sump through a vent path that is defined by at least one of the valve housing and the rotor. The vent path is configured to prevent air from being sucked into the variable cam timing phaser through the vent path.

Variable cam timing phaser and system including the same

A hydraulic variable camshaft timing (VCT) assembly including a stator having at least one fluid chamber; and a rotor, received by and angularly displaceable relative to the stator, having at least one vane positioned within the fluid chamber extending radially outwardly from a hub, and a hydraulic switch assembly positioned in the rotor to regulate a flow of fluid between an advancing chamber and a retarding chamber through the vane.

Hydraulic variable camshaft timing with a temperature based hydraulic switch

A variable cam timing phaser mounted to a camshaft and including a housing assembly having an outer circumference for accepting a drive force; a rotor assembly received by the housing assembly defining a chamber separated into an advance chamber and retard chamber by a vane; a control valve in fluid communication with the advance chamber and the retard chamber, a source of fluid, and a sump through at least one exhaust line connected to at least one exhaust port; and at least one check valve in the at least one exhaust line between the control valve and the sump. The at least one check valve prevents air from the sump connected to the at least one exhaust port from being sucked into the variable cam timing phaser through the at least one exhaust port during a torque reversal of the camshaft.

Check valve for exhausting flow of fluid from a variable cam timing phaser

Using existing phaser control valve and a solenoid to create a pumping chamber which provides enough oil pressure to disengage a locking pin at all conditions.

Zero pressure unlocking system for a phaser

An arrangement of a vehicle is provided having normal transverse engine/transmission normal two-wheel drive operation which can be selectively placed into four-wheel drive operation wherein a pump which powers the coupling or uncoupling is independent of the transmission lubrication pump and is powered by the transmission.

Power transfer unit (PTU) assembly with hydraulically actuated disconnect rear output shaft

A product may comprise an electric machine, and may include first and second shafts connectable to the electric machine in torque a transferring relationship. A first clutch assembly may selectively connect the electric machine with the first shaft and a second clutch assembly may selectively connect the electric machine with the second shaft. A gear set may be operatively engageable between the electric machine and the first and second clutch assemblies. An engagement coupling may connect the gear set in a high range between the electric machine and the first and second clutch assemblies, and the engagement coupling may connect the gear set in a low range between electric machine and the first and second clutch assemblies.

E-assist with torque vectoring

A hydraulic actuation system () and method of assembly for disconnecting a secondary driveline () can be used in an all-wheel drive (AWD) vehicle () having a power take-off unit (PTU) () for transferring rotary power to the secondary driveline (). The hydraulic actuation system () can include a source of pressurized fluid (), a hydraulically actuated synchronizer () for synchronizing rotary motion between the PTU () and the secondary driveline (), at least one hydraulically actuated clutch assembly () for connecting and disconnecting secondary vehicle wheels () with respect to the secondary driveline (), an area control solenoid (ACS) valve () in fluid communication with the source of pressurized fluid () to modulate pressure to engage and disengage the synchronizer (), and at least one variable force solenoid (VFS) valve () in fluid communication with the source of pressurized fluid () to modulate pressure to the at least one hydraulically actuated clutch assembly ().

Hydraulic system for a driveline disconnect with independent drive rear driveline module

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.

Growing community of inventors

Waterford, MI, United States of America

Keith V Feldt