Method for determining a functional state of a pressure build-up valve, and function monitoring device for a pressure build-up valve of a hydraulic brake booster

摘要

A method for determining a functional state of a pressure build-up valve of a hydraulic brake booster of a brake system, having the following steps: comparing an activation intensity of an activation of a brake activating element of the brake system to a predefined minimum activation intensity; if the brake activation intensity is less than or equal to the minimum activation intensity, determining the functional state, taking into account a pressure change over time in at least a partial volume of the hydraulic brake booster; if the brake activation intensity is greater than the minimum activation intensity, determining the functional state, taking into account an operating mode which is predefined for a pressure reduction valve of the hydraulic brake booster. A function monitoring device for a pressure build-up valve of a hydraulic brake booster of a brake system is also described.

主权项

1. A method for comprising:
comparing, by evaluation circuitry, an activation intensity of an activation of a brake activating element of a brake system to a predefined minimum activation intensity; and in accordance with a result of the comparison, determining, by the evaluation circuitry, a functional state of a pressure build-up valve of a hydraulic brake booster of the brake system, such that:
if the brake activation intensity is less than or equal to the minimum activation intensity, the determination of the functional state takes into account a pressure change over time in at least a partial volume of the hydraulic brake booster; andif the brake activation intensity is greater than the minimum activation intensity, the determination of the functional state takes, into account an operating mode which is predefined for a pressure reduction valve of the hydraulic brake booster.