Brake control system for motor vehicles
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorSebastian Haerdtl
Life of this patent
Estimating the term…
Abstract
A brake control system has an electronic control unit such that, when the motor vehicle is at a standstill, an automatic parking brake function can be activated by the control unit. In the presence of an activation condition for the parking brake function, the brake pressure required for this purpose can be determined at least in a manner dependent on the longitudinal inclination and in a manner dependent on an estimated normal force distribution of all of the wheels and/or an estimated capability of all of the wheels to transmit braking and/or drive torque to the underlying surface. Here, the brake pressure can be predefined to be higher the more wheels have a reduced normal force.
Claims6
A brake control system for a motor vehicle, comprising:
- an electronic control unit configured such that:
- an automatic parking brake function is activatable by the control unit in a standstill of the motor vehicle, wherein
- if an activation condition for the parking brake function is present, brake pressure required for this purpose is determinable at least dependent on a longitudinal inclination and dependent on an estimated contact force distribution and/or torque transmission capability of all wheels of the motor vehicle, and wherein
- the control unit detects which wheel has a contact force and/or torque transmission capability below a lower limit value, wherein a distribution of the required brake force is predetermined only to the wheels with a contact force and/or torque transmission capability above said lower limit value.
Dependencies are inferred from the claim text.