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COMMON SHUTOFF VALVE FOR VACUUM DRIVE AT LOW ENGINE LOADS AND VACUUM VAPOUR BLOWDOWN VACUUM DURING ENGINE FORCING
COMMON SHUTOFF VALVE FOR VACUUM DRIVE AT LOW ENGINE LOADS AND VACUUM VAPOUR BLOWDOWN VACUUM DURING ENGINE FORCING
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机译:在低发动机负荷下用于真空驱动的通用截止阀和在发动机受力期间的真空蒸气排空真空
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摘要
Methods and systems are provided for generating vacuum via an ejector arranged in a compressor recirculation flow path and an aspirator arranged in a throttle bypass path, where a suction port of the ejector is coupled with a canister purge valve having two outlet ports. In one example, the canister purge valve may include only a single flow restriction, the flow restriction arranged in a path coupling a fuel vapor purge system with the intake manifold when a solenoid of canister purge valve is open, such that a path coupling the fuel vapor purge system with the suction port of the ejector does not include any flow restrictions upstream of the suction port.
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