COMMON SHUTOFF VALVE FOR VACUUM DRIVE AT LOW ENGINE LOADS AND VACUUM VAPOUR BLOWDOWN VACUUM DURING ENGINE FORCING

摘要

FIELD: internal combustion engines.;SUBSTANCE: group of inventions relates to use of stored fuel vapours in an engine. Essence of inventions consists in that vacuum is created by means of ejector located in compressor recirculation channel, and an aspirator located in the throttle bypass channel, in which the ejector suction hole is connected to the adsorber purge valve with two outlets. In one example, the purge valve of the adsorber can contain only one flow limiter, the flow limiter is located in the channel connecting the purging fuel vapour system to the inlet manifold when the solenoid of the purge valve of the absorber is open, so that the channel connecting the purging fuel vapour system with the ejector inlet hole does not contain any flow restrictions upstream relative to the suction hole.;EFFECT: technical result is higher suction efficiency in engine with supercharging.;20 cl, 11 dwg