煤气发动机 gas motor ; gas engine ; gas igniton engine

吸入式煤气发动机 suction gas engine

焦炉煤气发动机 coke-oven gas engine ; oven gas engine

焦炭煤气发动机 coke-over gas engine

煤气火油发动机 gas and oil engine

煤层气发动机 coal-bed gas engine ; coal bed methane engine