Reignition processing device, reignition method, and program for gas engine

A reignition method for a gas engine for executing a reignition process of a cylinder during operation of a gas engine having multiple cylinders, the reignition method comprising:

• a step of, when at least one of the cylinders misfires, performing permission determination whether to execute the reignition process of a misfiring cylinder which is the at least one cylinder that misfires, on the basis of a damage diagnosis result based on an in-cylinder pressure of the misfiring cylinder, presence or absence of abnormality in a control device which performs combustion control and combustion diagnosis of the gas engine, an operational history related to the misfiring cylinder, and an operational state of the gas engine;
• and
• a step of executing the reignition process of the misfiring cylinder if execution of the reignition process is permitted by the permission determination.

A reignition program for a gas engine for executing a reignition process of a cylinder during operation of a gas engine having multiple cylinders, the reignition program being configured to cause a computer to implement:

• an execution permission unit configured to, when at least one of the cylinders misfires, perform permission determination whether to execute the reignition process of a misfiring cylinder which is the at least one cylinder that misfires, on the basis of a damage diagnosis result based on an in-cylinder pressure of the misfiring cylinder, presence or absence of abnormality in a control device which performs combustion control and combustion diagnosis of the gas engine, an operational history related to the misfiring cylinder, and an operational state of the gas engine;
• and
• a reignition execution unit configured to execute the reignition process of the misfiring cylinder if execution of the reignition process is permitted by the permission determination.