Ford Global Technolgoies, LLC

Charles Chunlin Liu

Felix Nedorezov

Hong Jiang

Matthew John Shelton

Zhengyu Dai

Bernard D Nefcy

Daniel Scott Colvin

Alexander O'Connor Gibson

Roger Lyle Huffmaster

Michael John Encelewski

A vehicle includes an engine and a traction motor. A clutch is configured to selectively mechanically couple the engine to the traction motor. A controller or controllers are provided that are configured to command a change in magnitude of an electric current supplied to the electric machine. The command is made in response to initiation of the clutch engaging the traction motor to the engine. The change in magnitude of the electric current ensures the speed of the traction motor remains generally constant during clutch engagement while a speed of the engine is less than that of the traction motor.

Controlling a traction motor during engine pull-up in a vehicle

A system and method for controlling a hybrid vehicle having an engine, a traction motor, and a transmission selectively coupled in series by a clutch include modulating engine torque while the clutch is disengaged and while engine speed is less than motor speed to increase the engine speed. The clutch is engaged to connect the engine to the motor in response to the engine speed exceeding the motor speed.

Modulating engine torque to synchronize engine speed with motor speed for disconnect clutch engagement in hybrid vehicle

A method for controlling a hybrid vehicle having a traction motor between an engine and a step ratio automatic transmission during a startup of the hybrid vehicle. The method includes performing at least one of adjusting a clutch or an oil pressure to change a transmission tie-up force or downshifting the transmission in response to an actuation rate of a vehicle driver demand.

Engine restart torque spike management system for a hybrid vehicle

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Plymouth, MI, United States of America

Charles Chunlin Liu