Method and device for estimating an admission pressure in a motor vehicle brake system
AssigneeRobert Bosch GmbH
InventorsChristian Zimmermann, Yoichi Arima
Life of this patent
Estimating the term…
Abstract
A method for estimating an admission pressure prevailing between a main brake cylinder and an intake valve of a wheel brake cylinder of a motor vehicle brake system, with the admission pressure being estimated, taking into account a run-on voltage of a clocked-mode motor of a pump for recirculating brake fluid from an accumulator, located at the output end of the wheel brake cylinder, to the main brake cylinder of the brake system, and also taking into account an accumulator pressure determined in the accumulator.
Claims8
A method for estimating an admission pressure prevailing between a main brake cylinder and an intake valve of a wheel brake cylinder of a motor vehicle brake system, comprising the steps of:
- performing one of a modeling and a measurement of an accumulator pressure in an accumulator;
- measuring a run-on voltage of a clocked-mode motor of a pump for recirculating a brake fluid from the accumulator, located at an output end of the wheel brake cylinder, to the main brake cylinder, and
- estimating the admission pressure as a function of the measured run-on voltage and the accumulator pressure.
A device for estimating an admission pressure prevailing between a main brake cylinder and an intake valve of a wheel brake cylinder of a motor vehicle brake system, comprising:
- an arrangement for estimating the admission pressure as a function of a run-on voltage of a clocked-mode motor of a pump for recirculating a brake fluid from an accumulator, located at an output end of the wheel brake cylinder, to the main brake cylinder of the motor vehicle brake system and an accumulator pressure.
Dependencies are inferred from the claim text.