FIELD: mechanics.
SUBSTANCE: present invention provides a pressure control device that includes a pressure control module that is divided into a first pressure chamber and a second pressure chamber by means of a piston, the first pressure chamber communicates with a main engine oil passage and the second pressure chamber communicates with a pressure control port of a pressure reducer, and a flow control valve, the inlet of which communicates with the first pressure chamber and the outlet communicates with the engine oil sump to control the pressure in the first pressure chamber. Compared with using the pressure in the gas supply pipe of the main combustion chamber, the stability of the pressure in the gas train can be ensured by using the pressure of the main oil passage, and the pressure in the gas train can be accurately controlled with a flow control valve with good transient response, which solves the problem of the known pressure control in the gas train using the gas supply pipe of the main combustion chamber. Additionally, this solution can control the pressure of gas supply to the prechamber according to needs, and can also control the volume of gas supply to the prechamber so as to provide a more accurate amount of gas to the prechamber.
EFFECT: prechamber gas supply system and a gas supply method.
10 cl, 7 dwg, 1 tbl
