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Invention Publication
CN103573485A 用于燃料系统控制的方法和系统 有权

用于燃料系统控制的方法和系统
Abstract:
本发明公开用于控制混合动力车辆中的燃料系统的方法和系统。在通过关闭抽取阀停止滤罐抽取之前，滤罐通风阀被关闭以保持燃料箱真空。然后，在随后的滤罐抽取期间，在打开通风阀之前打开抽取阀，允许在燃料箱真空状态下开始滤罐抽取。
Abstract(English):

Methods and systems are provided for controlling a fuel system in a hybrid vehicle. Before canister purging is stopped by closing a purge valve, a canister vent valve is closed to hold fuel tank vacuum. Then, during a subsequent canister purge, the purge valve is opened before opening the vent valve, allowing canister purge to initiate under fuel tank vacuum conditions.

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