Fuel evaporative gas treatment device for fuel tank
First Claim
1. A fuel evaporative gas treatment device for a fuel tank, the fuel evaporative gas treatment device being used in a vehicle including a combustion engine with a supercharger, the fuel evaporative gas treatment device comprising:
- a canister containing an adsorbent which adsorbs fuel evaporative gas from the fuel tank;
a communication passage configured to communicate between an air intake passage for the combustion engine and the canister; and
a check valve provided on the communication passage, the check valve being configured to block fluid flow from the air intake passage to the canister and permit fluid flow from the canister to the air intake passage, wherein the check valve includes;
an air intake side communication hole communicating with the air intake passage;
a canister side communication hole communicating with the canister;
a partition wall separating between the air intake side and the canister side communication holes, the partition wall being provided with a valve port configured to communicate between the air intake side and the canister side communication holes; and
a valve body configured to open and close the valve port, andthe valve body is movable between a seated position at which the valve port is closed and a non-seated position at which the valve port is opened, and moves from the air intake passage side to the canister side to close the valve port at the seated position, further comprising;
a drive section configured to move the valve body on the basis of a control command from a vehicle controller; and
a biasing body configured to bias the valve body in a direction toward the seated position, whereinthe drive section moves, when being energized, the valve body to the non-seated position against a biasing force of the biasing body, andin a state where the check valve is not energized, the valve body closes the valve port and operates as a mechanical check valve.
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Accused Products
Abstract
A fuel evaporative gas treatment device for a fuel tank is used in a motorcycle including a combustion engine with a supercharger. The fuel evaporative gas treatment device includes a canister which contains an adsorbent for adsorbing fuel evaporative gas from the fuel tank, a communication passage which communicates between an air intake passage for the combustion engine and the canister, and a check valve provided on the communication passage. The check valve blocks fluid flow from the air intake passage to the canister and permits fluid flow from the canister to the air intake passage.
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Citations
13 Claims
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1. A fuel evaporative gas treatment device for a fuel tank, the fuel evaporative gas treatment device being used in a vehicle including a combustion engine with a supercharger, the fuel evaporative gas treatment device comprising:
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a canister containing an adsorbent which adsorbs fuel evaporative gas from the fuel tank; a communication passage configured to communicate between an air intake passage for the combustion engine and the canister; and a check valve provided on the communication passage, the check valve being configured to block fluid flow from the air intake passage to the canister and permit fluid flow from the canister to the air intake passage, wherein the check valve includes; an air intake side communication hole communicating with the air intake passage; a canister side communication hole communicating with the canister; a partition wall separating between the air intake side and the canister side communication holes, the partition wall being provided with a valve port configured to communicate between the air intake side and the canister side communication holes; and a valve body configured to open and close the valve port, and the valve body is movable between a seated position at which the valve port is closed and a non-seated position at which the valve port is opened, and moves from the air intake passage side to the canister side to close the valve port at the seated position, further comprising; a drive section configured to move the valve body on the basis of a control command from a vehicle controller; and a biasing body configured to bias the valve body in a direction toward the seated position, wherein the drive section moves, when being energized, the valve body to the non-seated position against a biasing force of the biasing body, and in a state where the check valve is not energized, the valve body closes the valve port and operates as a mechanical check valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification