EVAPORATED FUEL PROCESSING DEVICE
First Claim
1. An evaporated fuel processing device comprising:
- a canister including an adsorbent material that adsorbs evaporated fuel generated in a fuel tank;
a vapor passage configured to connect the canister and the fuel tank;
a purge passage configured to connect the canister and an intake passage of an engine;
a shutoff valve provided in the vapor passage, and configured to adjust flow rate of gas flowing through the vapor passage;
a storage device configured to store in advance a reference value for the shutoff valve corresponding to an internal pressure of the fuel tank; and
a control device configured to perform a pressure release control by controlling the shutoff valve based on the reference value which is obtained from the internal pressure of the fuel tank.
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Accused Products
Abstract
An evaporated fuel processing device has a canister, a vapor passage, a purge passage, a shutoff valve, a storage device and a control device. The canister includes an adsorbent material that adsorbs evaporated fuel generated in a fuel tank. The vapor passage connects the canister and the fuel tank. The purge passage connects the canister and an intake passage of an engine. The shutoff valve is provided in the vapor passage, and adjusts flow rate of gas flowing through the vapor passage. The storage device stores in advance a reference value for the shutoff valve corresponding to internal pressure of the fuel tank. The shutoff valve is controlled based on the reference value, which is obtained from the internal pressure of the fuel tank, and pressure release control is performed on the fuel tank.
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Citations
12 Claims
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1. An evaporated fuel processing device comprising:
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a canister including an adsorbent material that adsorbs evaporated fuel generated in a fuel tank; a vapor passage configured to connect the canister and the fuel tank; a purge passage configured to connect the canister and an intake passage of an engine; a shutoff valve provided in the vapor passage, and configured to adjust flow rate of gas flowing through the vapor passage; a storage device configured to store in advance a reference value for the shutoff valve corresponding to an internal pressure of the fuel tank; and a control device configured to perform a pressure release control by controlling the shutoff valve based on the reference value which is obtained from the internal pressure of the fuel tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification