Patent ID: 9200588
Filing Date: 2015-12-01
Classification: B60T,F02D,G01L

Abstract:
1. A method for monitoring a signal value of a vacuum sensor of a vacuum system in a vehicle, wherein a vacuum generator and a brake booster are provided in the vacuum system, an upper error threshold (−p_vac_errorthreshold) is calculated as a function of the operating states of the vacuum generator and of the brake booster, wherein an error is identified when the signal value of the vacuum sensor exceeds a current value of the error threshold, wherein when the vacuum generator is active and the brake booster is not activated, a value of the error threshold (p_vac_errorthreshold) which increases with a predefinable gradient (p_grad_evac) is calculated on the basis of a starting value, and wherein the starting value is a high negative value at the system start, and otherwise is the value of the error threshold respectively calculated last.