Device and method for detecting a failure in a system for supercharging air in an engine

摘要

The device (1) has a determination module (DCT) e.g. pressure sensor/estimator, to determine, continuously or at regular time intervals, a gas intake pressure of an internal combustion engine. A calculation module (CALC) calculates a magnitude representative of a difference between a set point pressure and the intake pressure. A determination module (DET) determines a variation over time in the magnitude. A comparison module (COMP1) compares the variation with a preset threshold, and detects a failure in an air supercharging system of the engine when the variation is lesser than the threshold. An independent claim is also included for a method for detecting a failure in an air supercharging system of an internal combustion engine of a motor vehicle.