GAS ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a gas engine 1 capable of suppressing fluctuation of an actual air-fuel ratio λ even when load fluctuation occurs.SOLUTION: In a gas engine 1 correcting at least one opening D of the opening of an air supply valve 5a and the opening of a bypass valve 5b so as to become a proper target air-fuel ratio λt, a target gas pressure Pgt and a target gas injection time Tt of fuel gas are calculated based on fluctuation of an actual load L; a gas pressure is corrected based on the target gas pressure Pgt; and at least one opening of the opening of the air supply valve and the opening of the bypass valve is corrected based on change amounts of the target gas pressure Pgt and the target gas injection time Tt.