The present disclosure provides methods and systems for a pressureless fuel tank. Methods and systems are provided for performing leak test diagnostics for variable volume fuel tanks. In one example, a method includes diagnosing the presence or absence of a leak in a bellows via actuation of a bellows valve that fluidly couples the bellows to a vapor canister during a key-off event.
本公开提供了“用于无压力燃料箱的方法和系统”。提供了用于执行可变容积燃料箱的泄漏测试诊断的方法和系统。在一个示例中,一种方法包括经由在钥匙关断事件期间致动将波纹管流体地联接到蒸气滤罐的波纹管阀来诊断波纹管中存在或不存在泄漏。
METHOD AND SYSTEM FOR A PRESSURE-LESS FUEL TANK
用于无压力燃料箱的方法和系统
2023-12-05
Patent
Electronic Resource
Chinese
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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |
Methods and systems for controlling a bellows in a pressure-less fuel tank
European Patent Office | 2023
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