VERFAHREN UND VORRICHTUNG ZUM BRENNSTOFFEINSPRITZEN

摘要

PCT No. PCT/AU91/00532 Sec. 371 Date Jul. 9, 1993 Sec. 102(e) Date Jul. 9, 1993 PCT Filed Nov. 20, 1991 PCT Pub. No. WO92/08886 PCT Pub. Date May 29, 1992.A method of operating a low boiling point liquid fuel injection system for an internal combustion engine (1) wherein the fuel is stored in a tank (17) and has a variable vapour pressure in the tank (17) dependent upon ambient temperature. The method comprises pumping the fuel to the fuel inlet rail (15) and injectors (8, 9, 10, 11) at an absolute pressure which is maintained at a constant differential above the variable vapour pressure in the tank (17), monitoring the absolute pressure of the fuel and varying the fuel injection pulse width dependent upon the absolute pressure of the fuel together with the other usual engine parameters. The method has particular application where the fuel is a liquified gas.