| 摘要 |
PROBLEM TO BE SOLVED: To make low temperature startability of an engine better by not injecting LPG fuel which is liquid in a vaporizer during operation with accompanying temperature rise in a method for supplying LPG fuel to the engine using heat of an electric heater for heating LPG fuel at low temperature start. SOLUTION: In the method for supplying LPG fuel to the engine vaporizing fuel by a vaporizer 3 using engine cooling water after warming up and an electric heating part 3b using an electric heater at an early stage of low temperature start as heat source and sending the same to a fuel injection valve 5 and injecting the same to an intake pipe 4b of the engine, a second shut off valve 2b controlled by an electronic control unit 10 is arranged in a fuel inlet side of the vaporizer 3, quantity of LPG fuel flowing in the vaporizer 3 using the electric heating part 3b as the heat source is limited at the early stage of low temperature start to prevent liquid LPG fuel in a pre-heater chamber 30 from being pressed out by generated vaporized gas. COPYRIGHT: (C)2006,JPO&NCIPI |
