The present disclosure relates to internal combustion engines and its teachings may be applied to methods for leakage diagnosis in a fuel tank system. A method for diagnosing leakage may include: closing a fresh air line and a hydrocarbon/air mixture line connected to the fuel tank; measuring a first pressure change in the fuel tank system over a predefined first time interval; opening the fresh air line; operating the purge air pump until a predefined excess pressure is reached; closing the fresh air line; measuring a second pressure change over a predefined second time interval; and comparing the pressure changes to diagnose a leakage in the fuel tank system.


    Access

    Download


    Export, share and cite



    Title :

    Leakage Diagnosis In A Fuel Tank System


    Contributors:

    Publication date :

    2017-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / 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



    Leakage diagnosis device, oil tank leakage diagnosis system and vehicle

    JIA WEIXIN | European Patent Office | 2022

    Free access

    Leakage-proof automobile fuel tank

    CHENG HONGWU / ZHANG JING / CHEN JUNZHAN | European Patent Office | 2021

    Free access

    Oil tank leakage diagnosis method, system and automobile

    LI CHENGJIAN / LI NEN / LIU LIN et al. | European Patent Office | 2020

    Free access

    Fuel tank to prevent fuel leakage effectively

    LIM EUNYOUNG | European Patent Office | 2021

    Free access

    DUAL MODE FUEL TANK LEAKAGE DETECTOR

    BHANDARI KABIR / KUMAR AMARDIP / ABHISHEK KUMAR et al. | European Patent Office | 2023

    Free access