12V/24V Direct current fuel injection machine, which function is stable, application is very range, size is small, weight is light, easily for installing and carrying with. it uses vehicle battery supply power, capable for fuel supply of fieldwork car, such as road and field engineering machine, excavator, bulldozer, roller, cement mixer, crane, truck, fuel air compressor, mine machinery, agricultural machinery, industrial and mining equipment, vehicles can't get refuel from regular gas station, and no alternating current situation.