Methods and systems are provided for conducting an evaporative emissions test on a fuel system and an emissions control system in a vehicle. In one example, in response to an indication that a vehicle parking condition may result in the isolation of the fuel system from the emissions control system via the unintentional closing of fuel tank valves, a vehicle's active suspension system may be employed in order to level the vehicle a determined amount such that the fuel system isolation issues may be mitigated prior to an evaporative emissions test procedure. In this way, the entire fuel system and emissions control system may be diagnosed for potential undesired emissions, and potential violations of regulatory requirements for evaporative emissions testing may be reduced.


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    Title :

    Evaporative emissions detection method with vehicle self leveling suspension compensation


    Contributors:

    Publication date :

    2022-05-10


    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 / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte



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    DUDAR AED M / BOHR SCOTT A / WERNER MATTHEW et al. | European Patent Office | 2019

    Free access

    EVAPORATIVE EMISSIONS DETECTION METHOD WITH VEHICLE SELF LEVELING SUSPENSION COMPENSATION

    DUDAR AED M / BOHR SCOTT A / WERNER MATTHEW et al. | European Patent Office | 2017

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    Free access

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    Krotz, A.S. / Houser, R.E. / Kramer, J.H. | Engineering Index Backfile | 1955


    SELF LEVELING TORSILASTIC SUSPENSION

    KROTZ, A. S. / KRAMER, J. H. / HOUSER, R. E. | SAE Technical Papers | 1955