GAS ENGINE AND METHOD FOR CONTROLLING OPERATION THEREOF

摘要

The objective of the present invention is to improve operating efficiency and reduce combustion fluctuation in a gas engine that is equipped with a combustion chamber and an auxiliary chamber and that controls the supply of a fuel gas with a check valve. This gas engine, which controls the supply of a fuel gas to an auxiliary chamber (4) by means of a check valve (6) the opening/closing of which is determined by the difference in pressure between the fuel gas supply pressure and the cylinder pressure, is equipped with: a fuel gas amount calculation device (30) that calculates the amount of fuel gas supplied to the auxiliary chamber (4); a fuel gas supply pressure control device (40) and a pressure control valve (41) that control the supply pressure of the fuel gas supplied from an auxiliary gas supply path (14) to the auxiliary chamber (4); and a valve-open timing/valve-open period detection device (50) that detects the valve-open timing and the valve-open period of the check valve (6). The fuel gas supply pressure control device (40) and the pressure control valve (41) adjust the supply pressure of the fuel gas on the basis of detection values for the valve-open timing and the valve-open period.