... ParametersEngine ModelHG4BHG6BHGN14HGN14TypeIn-line, four stroke,electronic-controlspark plug ignition,water-cooling,dry cylinder jacket,premix proper ratioof air and gas before ... air and gas before combustionCooling modeRadiator fan cooling for closed-type cooling mode,or heat exchange water cooling for co-generation unitCylinders4666Bore and Stroke ...