Purge system for fuel evaporation gas of vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsJong Hwan Lee, Ju Tae Song
Life of this patent
Estimating the term…
Abstract
A purge system for fuel evaporation gas may include an ejector, having a nozzle configured to allow driving fluid to pass therethrough, a driving inlet through which the driving fluid is supplied into the ejector, a suction inlet through which purge gas including a fuel component is drawn as suction fluid from a canister into the ejector, a diffuser outlet through which a mixture of the driving fluid that has passed through the nozzle and the drawn purge gas is discharged out of the ejector, and a suction passage extending from the suction inlet toward a downstream side of the nozzle based on a flow direction of the driving fluid, and a bypass passage coupled from the suction inlet to the driving inlet.
Claims13
A purge system for fuel evaporation gas of a vehicle, the purge system comprising:
- an ejector apparatus including:
- a nozzle configured to allow driving fluid to pass therethrough;
- a driving inlet fluidically-connected to the nozzle and through which the driving fluid is supplied into the nozzle of the ejector apparatus;
- a suction passage and a suction inlet fluidically-connected to the nozzle through the suction passage, wherein purge gas including a fuel component is drawn through the suction inlet as suction fluid from a canister into the ejector apparatus;
- a diffuser outlet fluidically-connected to the nozzle and through which a mixture of the driving fluid that has passed through the nozzle and the drawn purge gas is discharged out of the ejector apparatus;
- and
- a bypass passage fluidically-connecting unidirectionally from the suction inlet to the driving inlet, by bypassing the suction passage,
- wherein the suction passage is formed to extend from the suction inlet toward a downstream side of the nozzle based on a flow direction of the driving fluid,
- wherein a recirculation fluid line is coupled to the driving inlet of the ejector apparatus from an engine intake system at a rear end portion of a compressor of a turbocharger, and
- wherein air compressed by the compressor of the turbocharger is supplied as the driving fluid from the engine intake system to the driving inlet of the ejector apparatus, or the purge gas, which is the suction fluid, is drawn from the driving inlet into the engine intake system.
An ejector comprising:
- a nozzle configured to allow driving fluid supplied out of an engine to pass therethrough;
- a driving inlet fluidically-connected to the nozzle and through which the driving fluid is supplied into the nozzle of the ejector;
- a suction passage and a suction inlet fluidically-connected to the nozzle through the suction passage, wherein purge gas of a canister and including a fuel component is drawn through the suction inlet as suction fluid;
- a diffuser outlet fluidically-connected to the nozzle and through which a mixture of the driving fluid that has passed through the nozzle and the drawn purge gas is discharged out of the ejector;
- and
- a bypass passage fluidically-connecting unidirectionally from the suction inlet to the driving inlet, by bypassing the suction passage.
A purge system for fuel evaporation gas of a vehicle, the purge system comprising:
- an ejector, a canister, a compressor of a turbocharger, an engine intake system, and a recirculation fluid line,
- wherein the ejector is provided therein with:
- a nozzle configured to allow driving fluid to pass therethrough;
- a driving inlet fluidically-connected to the nozzle and through which the driving fluid is supplied into the nozzle of the ejector;
- a suction passage and a suction inlet fluidically-connected to the nozzle through the suction passage, wherein purge gas including a fuel component is drawn through the suction inlet as suction fluid from the canister into the ejector;
- a diffuser outlet fluidically-connected to the nozzle and through which a mixture of the driving fluid that has passed through the nozzle and the drawn purge gas is discharged out of the ejector;
- and
- a bypass passage fluidically-connecting unidirectionally from the suction inlet to the driving inlet, by bypassing the suction passage,
- wherein the suction passage is formed to extend from the suction inlet toward a downstream side of the nozzle based on a flow direction of the driving fluid,
- wherein the recirculation fluid line is coupled to the driving inlet of the ejector from an engine intake system at a rear end portion of a compressor of a turbocharger, and
- wherein air compressed by the compressor of the turbocharger is supplied as the driving fluid from the engine intake system to the driving inlet of the ejector, or the purge gas, which is the suction fluid, is drawn from the driving inlet into the engine intake system.
Dependencies are inferred from the claim text.