Accurate injection control method for high-pressure gas fuel of engine

The invention discloses an accurate injection control method for high-pressure gas fuel of an engine. According to the precise injection control method for the high-pressure gas fuel of the engine, a gas supply system, a pressure accumulator, an electric control injector and an electronic control unit are included, the pressure accumulator is provided with a pressure sensor and a temperature sensor, the gas fuel in the pressure accumulator is led to the electric control injector, and a combustion chamber and a piston are arranged at the lower end of the electric control injector. According to the gas temperature value, the electronic control unit issues an instruction to control the gas supply system to supply the gas fuel with the target pressure to the pressure accumulator, and the electronic control unit controls the power-up time of the electronic control ejector according to the preset corresponding relation of the temperature, the pressure, the power-up time and the gas injection amount. And the amount