FUEL DELIVERY DEVICE FOR ENGINE

摘要

PROBLEM TO BE SOLVED: To accurately control fuel supplying amount to an engine by calculating vapor mixing amount to fuel in a liquid phase state. SOLUTION: The fuel delivery device press-feeds LPG stored in a fuel tank in the liquid phase state to a delivery pipe 6 and each injector 4, and fuel injection amount supplied from each injector 4 to the engine 3 is corrected on the basis of a fuel state detected by various sensors 48 to 51. An electronic control device 40 estimates fuel composition Fc from in-tank fuel temperature Tn and in-tank fuel pressure Pt detected by a tank fuel temperature sensor 48 and a tank fuel pressure sensor 49, estimates fuel liquid density and a vapor mixing ratio in a delivery pipe 6 from in-delivery fuel temperature Td detected by the fuel composition Fc and an in-delivery fuel temperature sensor 50, and corrects the fuel injection amount supplied to the engine 3 according to the fuel liquid density and the vapor mixing ratio. COPYRIGHT: (C)2006,JPO&NCIPI