Ford Global Technolgoies, LLC

Zhengyu Dai

Hong Jiang

Matthew John Shelton

Yang Xu

Felix Nedorezov

Weitian Chen

Guopeng Hu

Bernard D Nefcy

Daniel Scott Colvin

Yanan Zhao

Francis Thomas Connolly

Roger Lyle Huffmaster

Mark Steven Yamazaki

Stuart N Ford

Sathish Atluri

Ming Lang Kuang

Jianbo Lu

Bradley Dean Riedle

Qi Wang

Ross Dykstra Pursifull

Ralph Wayne Cunningham

Jason Meyer

Xiaoyong Wang

Christopher John Teslak

Akshay Bichkar

Joseph Jay Torres

Jose Velazquez Alcantar

Hiral Jayantilal Haria

Pinzhi Liu

Timothy L Sargent

Charles Chunlin Liu

Thomas George Leone

Kenneth James Miller

Rajit Johri

Dimitar Petrov Filev

Yuji Fujii

Mrdjan J Jankovic

Marvin Paul Kraska

Wei Liang

Alexander O'Connor Gibson

Davorin David Hrovat

Hongtei Eric Tseng

Davor Hrovat

Steven Joseph Szwabowski

Michael Glenn Fodor

Scott J Lauffer

Peter John Grutter

Sanghyun Hong

Todd Mccullough

Ashok E Rodrigues

Stephen Lee Cooper

Peter James Barrette

Jonathan Sullivan

Michael Tekletsion Berhan

Brandon Michael Dawson

Alexander Phillip McDonnell

Paul M Moubarak

Scott Joseph Gittins

Seunghoon Lee

David G Hagner

Christoph Henel

Philip J Wiethe, Jr

Dimitar P Feliv

Zhang Yan

Ankit Saini

Qingyu Zhang

David Peterson

Chunlin Liu

Amer Malik

Issa Aljanabi

A method for controlling a vehicle transmission system having a clutch system includes generating a torque-pressure (T-P) gain deviation based on a T-F characteristic and a nominal T-F characteristic for the clutch system, generating a pressure magnitude deviation based on the set of pressure values and the set of nominal pressure values, determining whether a T-F characteristic deviates from the nominal T-F characteristic based on the T-P gain deviation and the pressure magnitude deviation, identifying the T-F characteristic as deviating in response to the T-F characteristic departing from the nominal transfer characteristic, and issuing a notification regarding the deviating T-F characteristic to perform a corrective action related to the clutch system.

Method and system for a vehicle clutch performance detection system using clutch torque and clutch pressure

A method includes estimating a first pressure at a first location of a clutch based on a flow rate of a fluid in the clutch, computing a first torque lead value based on the first pressure, computing a second torque lead value based on a second pressure, computing a third torque lead value by combining the first torque lead value and the second torque lead value, and applying torque from a motor of the vehicle based on the third torque lead value.

Method and system for providing torque to clutch in hybrid vehicle

A vehicle includes an engine, an accelerator pedal, and a controller. The controller is programmed to command torque to the engine based on a set speed of adaptive cruise control and is programmed to, in response to the adaptive cruise control being active, a measured lateral acceleration of the vehicle exceeding a user-defined lateral acceleration threshold during a road curve, and the accelerator pedal being released, reduce a speed of the vehicle below the set speed until the measured lateral acceleration is less than the lateral acceleration threshold.

Adaptive cruise control with user-defined lateral acceleration threshold

A vehicle includes an engine, a primary axle drivably connected to the engine, and a secondary axle drivably connected to the engine by a clutch. A controller is programmed to, in response to map data indicating that the vehicle is off-road, enable an off-road transfer torque control mode in which temperatures of the clutch are compared to a lower threshold. The controller is further programmed to, in response to the temperature of the clutch exceeding the lower threshold, display a message to a driver indicative of rising temperatures of the clutch, and, in response to a temperature of the clutch exceeding an upper limit, enable a power limiting mode in which torque of the engine is limited to a predefined value.

Off-road clutch control

A hybrid vehicle includes an electric motor and a combustion engine. A K0 clutch couples the combustion engine to a drivetrain of the vehicle. A control module of the vehicle calculates a torque to be applied by the motor to the K0 clutch when initiating engagement of the combustion engine to the drivetrain. The control module calculates two separate torque lead values by two separate methods and calculates the torque by combining the two torque lead values.

Methods and system are described for changing a driveline gear range from a higher gear range to a lower gear range. The driveline may include two electric machines and four clutches in a four wheel drive configuration. The methods and systems permit a driveline to change from a higher gear range to a lower gear range without stopping a vehicle.

System and method for changing to a low gear range of a four wheel drive vehicle

Methods and system are described for changing a driveline gear range from a lower gear range to a higher gear range. The driveline may include two electric machines and four clutches in a four wheel drive configuration. The methods and systems permit a driveline to change from a lower gear range to a higher gear range in a way that may reduce torque disturbances that may result from gear lash.

System and method for reducing gear lash related torque disturbances

An electrified vehicle torque transfer system includes, among other things, an engine having an engine shaft, an electric machine having an electric machine shaft, a first clutch that is selectively engaged to rotatably couple together the engine shaft and the electric machine shaft such that the engine can drive rotation of the electric machine, and a second clutch that is selectively engaged to rotatably couple together the engine shaft and the electric machine shaft such that the electric machine can drive rotation of the engine.

Electrified vehicle torque transfer system and method

System and method for changing gear ranges of a four wheel drive vehicle

Systems and methods for improving operation of a hybrid vehicle driveline are presented. In one example, a margin torque for closing a torque converter clutch is adjusted responsive to a state of engine operation.

Systems and methods for operating a torque converter clutch

Systems and methods for operating a driveline of a hybrid vehicle are described. In one example, vehicle launch is controlled according to a linear quadratic regulator that provides feedback control according to torque converter slip error and vehicle speed error. The vehicle launch is also controlled according to feed forward control that is based on requested torque converter slip and requested vehicle speed.

Methods and system for controlling launch of a hybrid vehicle

Methods and systems are provided for operating a vehicle that includes a torque vectoring electric machine. In one example, torque output of a torque vectoring electric machine is adjusted to reduce driveline torque disturbances when the torque vectoring electric machine is activated. The torque output is adjusted in response to a speed difference between a wheel speed and a speed of the torque vectoring electric machine.

Methods and system for operating a torque vectoring electric machine

Systems and methods for operating a driveline of a vehicle that includes an automatic transmission and a torque converter are described. In one example, vehicle launch is controlled according to a linear quadratic regulator that provides feedback control according to torque converter slip error and vehicle speed error. The vehicle launch is also controlled according to feed forward control that is based on requested torque converter slip and requested vehicle speed.

Methods and system for controlling launch of a vehicle having an automatic transmission

A vehicle has an accelerator pedal in communication with a prime mover, a transmission, and a controller. The controller is configured to, in response to receiving a first input indicative of a vehicle state and a second input indicative of a curve along a vehicle path within a predetermined time interval, downshift the transmission and modify a driver torque request map associated with the accelerator pedal to reduce a percentage of pedal travel associated with positive drive torque. A method of controlling a vehicle includes downshifting a transmission and modifying a driver torque request map associated with an accelerator pedal to reduce a percentage of pedal travel associated with positive drive torque when a vehicle state and a curve from an electronic horizon system predict a vehicle lateral acceleration in the curve being above a first threshold value.

Method and system for controlling a vehicle

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Canton, MI, United States of America

Zhengyu Dai