Fuel-feeding device
AssigneeAisan Kogyo Kabushiki Kaisha
InventorsYuya Tanida, Keita Suzuki
Life of this patent
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Abstract
A fuel-feeding device may include a fuel tank storing fuel therein, a fuel pump configured to feed the fuel in the fuel tank to an engine through a fuel-feeding conduit, an aspirator configured to generate a negative pressure therein using a flow of the fuel flowing through a branched conduit branched from the fuel-feeding conduit, a negative pressure sensor configured to detect the negative pressure generated by the aspirator, and a control device configured to control a revolution speed of the fuel pump. The control device is configured to determine a sign of vapor generation in the fuel stored in the fuel tank based on detection information of the negative pressure sensor.
Claims5
A fuel-feeding device, comprising:
- a fuel tank storing fuel therein;
- a fuel pump configured to feed the fuel in the fuel tank to an engine through a fuel-feeding conduit extending from the fuel tank;
- an aspirator disposed along a branched conduit extending from the fuel-feeding conduit, wherein the aspirator is configured to generate a negative pressure therein in response to a flow of the fuel flowing through the branched conduit from the fuel-feeding conduit;
- a negative pressure sensor configured to detect the negative pressure generated by the aspirator;
- and
- a control device configured to control a revolution speed of the fuel pump,
- wherein the control device is configured to determine a sign of vapor generation in the fuel stored in the fuel tank based on the negative pressure detected by the negative pressure sensor and to increase the revolution speed of the fuel pump when such a sign is determined.
A fuel-feeding device, comprising:
- a fuel tank storing fuel therein;
- a fuel pump configured to feed the fuel in the fuel tank to an engine through a fuel-feeding conduit extending from the fuel tank;
- an aspirator disposed along a branched conduit extending from the fuel-feeding conduit, wherein the aspirator is configured to generate a negative pressure therein using a flow of the fuel flowing through the branched conduit from the fuel-feeding conduit;
- a negative pressure sensor configured to detect the negative pressure generated by the aspirator;
- and
- a control device configured to control a revolution speed of the fuel pump,
- wherein the control device is configured to determine that when the negative pressure detected by the negative pressure sensor is reduced to a level lower than a predetermined negative pressure, such a reduction of the detected negative pressure is a sign of vapor generation in the fuel stored in the fuel tank.
Dependencies are inferred from the claim text.