| 摘要 |
A fuel supply apparatus of an LPI(Liquefied Petroleum Injection) engine is provided to prevent excessive emission of hydro carbon during an early stage of engine start caused due to excessive fuel in a combustion chamber, by circulating fuel remaining in an injector to a fuel tank after stoppage of the engine. A fuel supply apparatus of an LPI engine, comprises a pressure regulator(100), a pulsation sound absorber(200), and a third cutoff valve(300). The pressure regulator is interposed between a fuel pump(2) of a fuel tank(1) and a first cutoff valve(3), and circulates fuel to the fuel tank if the supply pressure of the fuel pump is higher than a preset pressure level. The pulsation sound absorber is arranged at a fuel return line(7) of an injector(5), and removes pulsation sound generated during operation of the injector. The third cutoff valve prevents fuel from returning to the fuel tank during operation of the engine, and opens to allow fuel remaining in the injector to return to the fuel tank when the engine stops.
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