Delphi Technologies, Inc.

Other

Todd David Brown

Eric Edward Krueger

Ashok Chandy

Hsien Heng Chen

Michael Douglas Rizzo

John D Martens

Steven Paul Loudon

Chester W Gryczan

Keith Wayne Beyer

Kevin J Zelenka

Vincent E Marchese

Alan Rae Lustre

A control system for a steering system in a vehicle comprising: a reference model responsive to an operator input that computes desired states of the vehicle; a feedforward controller in operable communication with the reference model. The feedforward controller computes a first control value based on input from said reference model and based on at least one of: a lateral velocity, a rate of lateral velocity, a lateral acceleration, and a combination, wherein the combination includes a yaw rate with at least one of a lateral velocity, a rate of lateral velocity, and a lateral acceleration of the motor vehicle. The system also includes an actuator for affecting the steering system based on the first control value, the actuator in operable communication with the feedforward controller.

Active steering for handling/stability enhancement

A vehicle powertrain torque control provides an engine drag control mode of operation during periods of undesired engine drag induced wheel slip by modifying the torque of the vehicle engine in closed loop control to maintain a driven wheel speed at a predetermined target velocity lower than the vehicle speed by a target velocity difference providing as much engine braking as is consistent with a desired degree of lateral traction. The control derives a velocity error as the difference between the driven wheel speed and the target velocity and derives and delivers to the powertrain a torque command for reducing the velocity error. The torque control determines the engine drag control mode in response to the wheel speed sensors, preferably causing entry of the engine drag control mode when the driven wheel speed that is closest to the vehicle speed falls below the target velocity while powertrain delivered torque and throttle position are below predetermined values indicative of deceleration. The target velocity difference is preferably determined as a weighted difference between vehicle speed and vehicle turn curvature, the difference being reduced by the latter for quicker response in vehicle turns.

Vehicle engine torque control with engine drag control mode

A motor vehicle mounted system is responsive to sensed or estimated vehicle lateral acceleration and vehicle speed for detecting and signaling when the vehicle is operating on a racetrack. The system determines whether the vehicle is in a high lateral acceleration state or a low lateral acceleration state and when the vehicle is maintaining a minimum speed. The system increments a count when the vehicle is in the high lateral acceleration state if the vehicle has maintained the minimum speed for a first time since the last increment or decrement of the count and decrements the count when the vehicle is in the low lateral acceleration state if the vehicle has maintained the minimum speed for a second time since the last increment or decrement of the count. The system detects and signals operation on a racetrack while the count exceeds a predetermined threshold count and otherwise detects and signals no operation on a racetrack. Racetrack driving is thus detected through repeated episodes of high lateral acceleration during high speed turns on racetrack curves and corners.

Method and apparatus for detecting and signaling racetrack operation of a motor vehicle

Growing community of inventors

Brooklyn, MI, United States of America

Todd David Brown