Method for synchronous control of fuel switching in gasoline-gas dual-fuel vehicle

摘要

A synchronous control method for fuel switch of an oil-gas dual-mode vehicle includes the following steps: (1) starting the vehicle, and an electric injection system is started; (2) judging whether the switch condition is satisfied by a CNG controller, if not, judging is continued; (3) if the switch condition is satisfied, fuel of the engine is switched according to a sequence of the first cylinder, the third cylinder, the fourth cylinder and the second cylinder by the CNG controller,the fuel of the third cylinder is switched after the fuel of the first cylinder is switched for X1 cycles; the fuel of the fourth cylinder is switched after the fuel of the third cylinder is switched for X3 cycles, finally the fuel of the second cylinder is switched after the fuel of the fourth cylinder is switched for X4 cycles, wherein X1, X3 and X4 are calibratable coefficients; (4) ending. The method improves the performance and ride comfort of an automobile.