SCAVENGING OPERATION METHOD FOR GAS ENGINE

摘要

A scavenging operation method capable of preventing the occurrence of rust and corrosion in an ignition plug and a cylinder liner in a cylinder is provided. A scavenging operation method for a gas engine comprising a fuel control valve (34) for adjusting the fuel gas supply amount, a throttle valve (35) for adjusting the supply amount of mixed gas of fuel gas and air, and a control means (40) is characterized in that the control means (40) closes the fuel control valve (34) in accordance with an instruction to stop a gas engine, and the control means (40) opens the throttle valve (35) at a predetermined opening degree or more during a period in which the engine speed reduces after the instruction to stop the gas engine.