FUEL SUPPLY SYSTEM FOR GDI ENGINE AND CONTROL METHOD THEREOF
First Claim
1. A fuel supply system for a Gasoline Direct Injection (GDI) engine, comprising:
- an Engine Control Unit (ECU) that sets a desired fuel pressure and controls a fuel pressure of a section from a low-pressure fuel pump to a high-pressure fuel pump in accordance with the desired fuel pressure;
the low-pressure fuel pump that is controlled by the ECU; and
a fuel pressure sensor that measures the fuel pressure of the section from the low-pressure fuel pump to the high-pressure fuel pump and supplies the measured fuel pressure to the ECU,wherein the ECU feedback-controls the low-pressure fuel pump in response to a signal from the fuel pressure sensor.
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Accused Products
Abstract
A fuel supply system for a Gasoline Direct Injection (GDI) engine may include an Engine Control Unit (ECU) that sets a desired fuel pressure and controls a fuel pressure of a section from a low-pressure fuel pump to a high-pressure fuel pump in accordance with the desired fuel pressure, and a fuel pressure sensor that measures the fuel pressure of the section from the low-pressure fuel pump to the high-pressure fuel pump and supplies the measured fuel pressure to the ECU for feedback-controls of the low-pressure fuel pump. The fuel supply system may further include a fuel pump controller disposed between the ECU and the low-pressure fuel pump to control the low-pressure fuel pump. A control method of the fuel supply system may include detecting the number of revolution of the engine and the load, setting the desired fuel pressure, and feedback controlling the low-pressure pump.
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Citations
8 Claims
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1. A fuel supply system for a Gasoline Direct Injection (GDI) engine, comprising:
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an Engine Control Unit (ECU) that sets a desired fuel pressure and controls a fuel pressure of a section from a low-pressure fuel pump to a high-pressure fuel pump in accordance with the desired fuel pressure; the low-pressure fuel pump that is controlled by the ECU; and a fuel pressure sensor that measures the fuel pressure of the section from the low-pressure fuel pump to the high-pressure fuel pump and supplies the measured fuel pressure to the ECU, wherein the ECU feedback-controls the low-pressure fuel pump in response to a signal from the fuel pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification