| 摘要 |
PURPOSE: A fuel delivery system of a liquefied natural gas vehicle is provided to smoothly supply fuel of certain pressure by carrying fuel by a fuel pump to a mixer and a fuel tank when the fuel supply pressure decreases. CONSTITUTION: A heat exchanger(2) for heating fuel is installed in a fuel supply line. A mixer for mixing the heat-exchanged fuel with exterior air is connected to the heat exchanger. A fuel pump supplies the fuel in a fuel outlet line(1a) of the heat exchanger. Shutoff valves(7a,7b) open or close a first fuel supply line(5b) connecting the fuel outlet line of the heat exchanger and a fuel pump. A pressure sensor(4a) is connected to an input terminal of an engine control unit(ECU) and senses the fuel pressure of the fuel outlet line of the heat exchanger. The shut off valves and the fuel pump are connected to the output terminal of the engine control unit. The engine control unit senses the fuel pressure of the fuel outlet line by the medium of the pressure sensor and controls the drive of the fuel pump and the shut off valves. |
