Leak diagnostic apparatus for a vaporized fuel processing system
First Claim
1. A leak diagnostic apparatus for a vaporized fuel processing system that purges vaporized fuel in a fuel tank of a vehicle, comprising:
- a leak diagnostic device that carries out a leak diagnosis of the vaporized fuel processing system while the engine is operating;
a fuel tank condition detection device that detects the conditions in the fuel tank; and
a determining device that determines if the leak diagnosis should be carried out based on predetermined conditions in the fuel tank.
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Accused Products
Abstract
A leak diagnostic apparatus for a vaporized fuel processing system that purges vaporized fuel in a fuel tank of a vehicle is disclosed. The leak diagnostic apparatus comprises a leak diagnostic device, a fuel tank condition detection device and a determining device. The leak diagnostic device carries out a leak diagnosis of the vaporized fuel processing system while the engine is operating. The fuel tank condition detection device detects the conditions in the fuel tank. The determining device determines whether the leak diagnosis should be carried out based on predetermined conditions in the fuel tank.
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Citations
18 Claims
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1. A leak diagnostic apparatus for a vaporized fuel processing system that purges vaporized fuel in a fuel tank of a vehicle, comprising:
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a leak diagnostic device that carries out a leak diagnosis of the vaporized fuel processing system while the engine is operating;
a fuel tank condition detection device that detects the conditions in the fuel tank; and
a determining device that determines if the leak diagnosis should be carried out based on predetermined conditions in the fuel tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for performing leak diagnosis in a vaporized fuel processing system, comprising:
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detecting the operation status of an engine;
detecting a condition of the interior of a fuel tank; and
determining a leak diagnosis based on the detected condition of the interior of the fuel tank while the engine is operating. - View Dependent Claims (17)
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18. A leak diagnostics system for a vaporized fuel processing system that purges the vaporized fuel in the vehicle fuel tank comprising:
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means for detecting the operation status of an engine;
means for detecting a conditions of the interior of the fuel tank; and
means for determining a leak diagnosis based on a detected condition of the interior of the fuel tank while the engine is operating.
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Specification