Methods and systems are provided for expediting the generation of positive pressure and vacuum during corresponding phases of a fuel system leak test. Adjustments to the settings of active grille shutters and air dams enables heat to be trapped in the vehicle for the pressure phase and a cooling air flow to be provided during a vacuum phase. The adjustments enable the response time and completion frequency of an EONV test to be improved.
Method and system for fuel system leak detection
2021-04-06
Patent
Electronic Resource
English
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |