SYSTEM AND METHOD FOR DETERMINING BRAKE BOOSTER PRESSURE

摘要

A method and system for determining the pressure in a brake booster used to actuate a brake system having at least one main brake cylinder. The brake booster connected in a fluid-conducting manner by a non-return valve to an intake manifold of an internal combustion engine. A reduced pressure loss in the brake booster resulting from actuation of the main brake cylinder is balanced with the reduced pressure gain in the brake booster as a result of a pressure difference between the brake booster pressure and the intake manifold pressure. The reduced pressure gain in the brake booster is determined based on time the air mass flow between the brake booster and the intake manifold.

主权项

1. A method for determining brake booster pressure comprising the steps of:
balancing a reduced pressure loss in the brake booster with a reduced pressure gain in the brake booster resulting from a pressure difference between a brake booster pressure and an intake manifold pressure; and calculating the reduced pressure gain in the brake booster based on the time progression of an air mass flow between the brake booster and an intake manifold.