| 摘要 |
An injector leakage preventing system of a liquefied petroleum injection engine is provided to reduce the number of parts, and to prevent fuel leakage more certainly. An injector leakage preventing system of a liquefied petroleum injection engine comprises a fuel supply line(5), a bypass pipe(9), a fuel return line(11), a check valve(13), a suction pipe(15) and a valve unit(17). The fuel supply line is connected to a discharge part of a fuel pump(1), and equipped with a cutoff valve(3). The bypass pipe is branched from the fuel supply line, and guides fuel inside a fuel tank(7). The fuel return line is connected to a suction part of the fuel pump. The check valve is installed to the fuel return line, and prevents backflow of fuel. The suction pipe is installed to the suction part of the fuel pump, and sucks fuel inside the fuel tank. The valve unit selectively opens and closes the suction pipe and the bypass pipe.
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