INTERNAL COMBUSTION ENGINE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an engine system capable of operating a gas engine with an air-fuel ratio in a suitable range even when a temperature of cooling water flowing through a cooling water passage fluctuates.SOLUTION: An internal combustion engine system includes a general control device 9 for calculating an actual air-fuel ratio with the usage of a temperature of air measured by a supply air temperature sensor 471 and a pressure of the air measured by a supply air pressure sensor 472 and controlling the actual air-fuel ratio to be a target air-fuel ratio set by an air-fuel ratio setting section, and further includes a cooling water temperature sensor 483 for measuring a temperature of cooling water passing through a cooling water passage 48. The general control device 9 has a target air-fuel ratio correction section 92 for correcting the target air-fuel ratio set by the air-fuel ratio setting section based on the temperature of the cooling water measured by the cooling water temperature sensor 483.