Fuel delivery system and method of operation
First Claim
Patent Images
1. A fuel delivery system for an engine, comprising:
- a fuel tank;
at least one fuel injector;
a fuel pump configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector;
a pressure sensor configured to sense a pressure of the fuel being provided to the at least one fuel injector;
a temperature sensor configured to sense a temperature of the engine; and
an engine control module configured to control the pressure of the fuel based on the sensed pressure and the sensed temperature, the engine control module further configured to determine a stop pressure based on the temperature of the engine sensed after the engine has stopped and to control the fuel pump to provide fuel to the at least one fuel injector at the stop pressure once the engine has stopped.
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Abstract
A fuel delivery system for an engine. The fuel delivery system includes a fuel tank, at least one fuel injector, a fuel pump, a pressure sensor, a temperature sensor, and an engine control module. The fuel pump is configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector. The pressure sensor is configured to sense a pressure of the fuel being provided to the at least one fuel injector. The temperature sensor is configured to sense a temperature of the engine. And the engine control module is configured to control the fuel pump based on the sensed pressure and the sensed temperature.
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Citations
19 Claims
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1. A fuel delivery system for an engine, comprising:
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a fuel tank; at least one fuel injector; a fuel pump configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector; a pressure sensor configured to sense a pressure of the fuel being provided to the at least one fuel injector; a temperature sensor configured to sense a temperature of the engine; and an engine control module configured to control the pressure of the fuel based on the sensed pressure and the sensed temperature, the engine control module further configured to determine a stop pressure based on the temperature of the engine sensed after the engine has stopped and to control the fuel pump to provide fuel to the at least one fuel injector at the stop pressure once the engine has stopped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A motorcycle, comprising
an engine including at least one fuel injector; -
a fuel tank; a fuel delivery system including a fuel pump configured to draw fuel from the fuel tank and provide the fuel to the at least one fuel injector, and a pressure sensor; a temperature sensor configured to sense a temperature of the engine; and an engine control module configured to control the fuel pump based on the sensed pressure and the sensed temperature in an engine start mode and an engine run mode, wherein in the engine start mode the engine control module is configured to receive an indication to start the engine, detect the sensed temperature after receiving the indication, determine a starting fuel pressure from a start mode look up table based on the sensed temperature, control the fuel pump to provide the starting fuel pressure, and start the engine after the sensed pressure substantially equals the starting fuel pressure, and wherein in the engine run mode the engine control module is configured to determine an operating fuel pressure from a run mode look up table based on the sensed temperature, wherein the start mode look up table is different from the run mode look up table. - View Dependent Claims (11, 12, 13, 19)
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14. A method of delivering fuel to an engine, comprising:
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detecting a fuel pressure; detecting a temperature of an engine; determining a fuel pressure set-point based on the detected temperature; controlling the fuel pressure based on the detected fuel pressure and the fuel pressure set-point; receiving an indication to stop the engine; stopping the engine; determining a stopped fuel pressure set-point after the engine has stopped based on the detected fuel pressure and the detected temperature after the engine has stopped, the stopped fuel pressure set-point being greater than a pressure at which the fuel vaporizes; and controlling the fuel pressure after the engine has stopped based on the stopped fuel pressure set-point. - View Dependent Claims (15, 16, 17, 18)
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Specification