Continental Automotive Systems Corporation

Pedro Henriques

Bo Ye

Sai-Pavan Eswara

Naren Dhansri

Krutarth Swadia

Richard Davis

A method and system corrects steering of a vehicle upon a brake system malfunction. The brake system has a diagonal split layout. An electronic brake system (EBS) controls operation of the master cylinder. An electronic power steering system (EPS) includes sensors to measure motion and torque of a steering column of the vehicle and includes a motor to provide torque to the steering column. During driver braking when one of the brake circuits has failed, the system calculates a yaw torque value introduced by a driver braking with just one functioning brake circuit. Based on a steer wheel angle and a steer wheel torque obtained from the sensors of the EPS and on the yaw torque value, a steer wheel torque request defining a steer wheel torque/angle needed to counter the yaw torque value is calculated and sent the EPS which operates the motor to compensate for the steering deviation.

Driver steer recommendation upon loss of one brake circuit of a diagonal spilt layout

A braking system for a vehicle, which includes both a primary brake system, and a secondary brake system. A plurality of braking units are controlled by the primary brake system when the primary brake system is active, and at least one of the plurality of braking units controlled by the secondary brake system when the primary brake system is inactive. An actuator is part of the primary brake system, and the actuator is controlled by a primary controller. The primary controller selectively actuates the actuator to control the fluid pressure in the primary brake system to selectively actuate the plurality of braking units when the primary brake system is active, and when the primary brake system is inactive, the secondary brake system generates a boost pressure in the at least one of the plurality of braking units controlled by the secondary brake system.

Electronic brake boost on secondary brake system

A vehicle includes a tone wheel having a plurality of encoding members spaced substantially evenly about a periphery thereof. Each tone wheel is rotates with an associated wheel. A fixed speed sensor is mounted adjacent to each tone wheel. The vehicle includes a brake system. A method determines a travel distance between adjacent encoding members. A required rolling distance of a vehicle from standstill is established. Maximum allowed interrupts per wheel is established, with an interrupt defined as each instance an encoding member passes an associated speed sensor. It is determined whether the vehicle is actually rolling from standstill. Once the vehicle is actually rolling, a number of interrupts is counted at each wheel. When the maximum allowed interrupts is counted at each wheel, the brake system is supplied with pressure increase to return the vehicle to, and hold the vehicle at, standstill prior to reaching the required rolling distance.

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Rochester Hills, MI, United States of America

Pedro Henriques