Gm Global Technolgoy Operations, Inc.

Bayerische Motoren Werke Aktiengesellschaft

Daimler Ag

Chrysler Corporation

Chrysler Group LLC

Lars Weinschenker

Zhenxing Fu

Jingchuan Li

Robert Inderka

A pump drive for a vehicle transmission pump. A transmission input torque member is operable to carry prime mover torque. A source of pump torque includes a pump input torque member circumscribing the transmission input torque member to apply torque to the transmission pump. An overrunning clutch is interposed between the pump input torque member and the transmission input torque member to carry the prime mover torque from the transmission input torque member to the pump torque output member.

Transmission pump drive

A method of controlling a brushless direct current motor without a position sensor. The motor includes a plurality phase windings adapted to be energized by an active inverter circuit that synchronously applies drive voltages through a plurality of phases to produce drive currents in the phase windings. Back electromotive force voltages are detected when the inverter circuit is inactive for sensorless detection of motor position.

Sensorless position detection for a brushless direct current motor during inverter standby

Growing community of inventors

Royal Oak, MI, United States of America

Lars Weinschenker