Evaporated fuel purge device
First Claim
1. An evaporated fuel purge device that purges fuel evaporated from a fuel tank to an engine having a turbocharger, the device comprising:
- a main passage through which the evaporated fuel passes;
a fuel inlet passage through which the evaporated fuel flows into the main passage;
a fuel outlet passage through which the evaporated fuel flows out of the main passage;
a valve disposed in the main passage to open or close the main passage;
a branch passage branched from the main passage at a position downstream of the valve in a flowing direction of the evaporated fuel;
an ejector having a drawing portion that is connected with the branch passage;
an air inlet passage through which intake air flows into the ejector from a downstream of the turbocharger in a flowing direction of the intake air; and
an air outlet passage through which the intake air flows out of the ejector to an upstream of the turbocharger in the flowing direction of the intake air, whereinthe ejector is located between the air inlet passage and the air outlet passage in the flowing direction of the intake air, the intake air passing through the drawing portion, the drawing portion drawing the evaporated fuel from the branch passage using the intake air passing through the drawing portion,the fuel inlet passage, the fuel outlet passage, the main passage, the valve, the branch passage, the air inlet passage, the air outlet passage, and the ejector are formed integrally with each other, andat least three of the fuel inlet passage, the fuel outlet passage, the air inlet passage, and the air outlet passage are arranged to extend parallel with each other in an extending direction.
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Accused Products
Abstract
An evaporated fuel purge device integrally includes a main passage, a fuel inlet passage, a fuel outlet passage, an ejector, an air inlet passage, and an air outlet passage. Evaporated fuel flows into the main passage through the fuel inlet passage, and flow out of the main passage through the fuel outlet passage. Intake air flows into the ejector from a downstream of a turbocharger through the air inlet passage, and flows out of the ejector to an upstream of the turbocharger through the air outlet passage. At least three of the fuel inlet passage, the fuel outlet passage, the air inlet passage, and the air outlet passage are arranged to extend parallel with each other.
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Citations
20 Claims
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1. An evaporated fuel purge device that purges fuel evaporated from a fuel tank to an engine having a turbocharger, the device comprising:
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a main passage through which the evaporated fuel passes; a fuel inlet passage through which the evaporated fuel flows into the main passage; a fuel outlet passage through which the evaporated fuel flows out of the main passage; a valve disposed in the main passage to open or close the main passage; a branch passage branched from the main passage at a position downstream of the valve in a flowing direction of the evaporated fuel; an ejector having a drawing portion that is connected with the branch passage; an air inlet passage through which intake air flows into the ejector from a downstream of the turbocharger in a flowing direction of the intake air; and an air outlet passage through which the intake air flows out of the ejector to an upstream of the turbocharger in the flowing direction of the intake air, wherein the ejector is located between the air inlet passage and the air outlet passage in the flowing direction of the intake air, the intake air passing through the drawing portion, the drawing portion drawing the evaporated fuel from the branch passage using the intake air passing through the drawing portion, the fuel inlet passage, the fuel outlet passage, the main passage, the valve, the branch passage, the air inlet passage, the air outlet passage, and the ejector are formed integrally with each other, and at least three of the fuel inlet passage, the fuel outlet passage, the air inlet passage, and the air outlet passage are arranged to extend parallel with each other in an extending direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An evaporated fuel purge device that purges fuel evaporated from a fuel tank to an engine having a turbocharger, the device comprising:
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a unitary integral main purge device body, including a main passage through which the evaporated fuel passes; a fuel inlet passage through which the evaporated fuel flows into the main passage; a fuel outlet passage through which the evaporated fuel flows out of the main passage; a branch passage branched from the main passage at a position downstream of the valve in a flowing direction of the evaporated fuel; an ejector having a drawing portion that is connected with the branch passage; an air inlet passage through which intake air flows into the ejector from a downstream of the turbocharger in a flowing direction of the intake air; and an air outlet passage through which the intake air flows out of the ejector to an upstream of the turbocharger in the flowing direction of the intake air; and a valve disposed in the main passage to open or close the main passage, wherein the ejector is located between the air inlet passage and the air outlet passage in the flowing direction of the intake air, the intake air passing through the drawing portion, the drawing portion drawing the evaporated fuel from the branch passage using the intake air passing through the drawing portion, and at least three of the fuel inlet passage, the fuel outlet passage, the air inlet passage, and the air outlet passage extend parallel with each other in an extending direction. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification