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US 10,473,065 B2Granted
Fuel return device
AssigneeKyosan Denki Co., Ltd.
InventorTetsuya Takahashi
Life of this patent
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Abstract
A fuel return device includes a fuel collector and a return system. The fuel collector is located in a passage between a fuel tank and a vapor fuel processing device that processes vapor fuel discharged from the fuel tank. The fuel collector collects the fuel and stores the collected fuel as a storage fuel. The return system extends from the fuel collector, and is connected to a low-pressure generation part that generates a low pressure by a flow of fuel refueled through a filler pipe into the fuel tank, to return the storage fuel to the fuel tank.
Claims7
A fuel return device comprising:
- a fuel collector located in a passage between a fuel tank and a vapor fuel processing device that processes vapor fuel discharged from the fuel tank, the fuel collector collecting fuel and storing the collected fuel as a storage fuel;
- and
- a return system extending from the fuel collector to return the storage fuel to the fuel tank, the return system being connected to a low-pressure generation part that generates a low pressure by a flow of fuel refueled through a filler pipe into the fuel tank, wherein
- the low-pressure generation part is a circulation system which causes the fuel tank and the filler pipe to communicate with each other,
- the return system and the circulation system are connected with each other in a unification part, and the storage fuel is returned to the fuel tank via the return system and the circulation system, and
- the circulation system has a control valve located between the fuel tank and the unification part to control a passage cross-section area so that the low pressure acts on the unification part.
3 more elements
Dependencies are inferred from the claim text.