The invention discloses a method for auxiliary pressurization of heavy oil rail through air. The method comprises the following steps that an engine drives an
air compressor to press the air, and meanwhile, an ECU of the engine sends an instruction to an
electromagnetic pump to incorporate the
fuel oil into a
fuel oil pressurization chamber of the oil rail, a
pressure sensor on each containing chamber on the oil rail feeds back a pressure value to the ECU of the engine correspondingly, when both the
oil pressure and the air pressure on the oil rail reach a designed pressure value,
electromagnetic valve instructions of an air
nozzle and an oil
nozzle given by the ECU enable two electromagnetic valves to inject the air and the oil into a oil-
gas mixing chamber, when the pressure in the oil-
gas mixing chamber reaches a proper value, the ECU commands the
fuel gas electromagnetic valves to be opened and closed according to the feedback information, so that the heavy oil
fuel gas is injectedinto a
combustion chamber, and the ignition of the heavy oil is realized. According to the oil rail, the method for auxiliary pressurization through the air is utilized,
heat energy carried by the air is utilized, the
fuel gas atomized can be warmed up, so that the heavy oil reaches an ignition effect similar to that of clear oil, and the purpose that the heavy
oil can be used on an ignition typeengine is achieved.