WT615/226B Series CNG/LPG Bus Engine WT615/226B Series CNG/LPG Bus Engine Model Unit TBD226B-6CNG WT615Z280CNG TBD226B-6LPG WT615Z260LPG Type- In line, water cool, six- cylinder, wet cylinder liner, turbo charged inter cooling, lean burn, electric control injection, electric control ignition In line, water cool, six-cylinder, dry cylinder liner, turbo charged inter cooling, lean burn, electric control injection, electric control ignition In line, water cool, six- cylinder, wet cylinder liner, turbo charged inter cooling, lean burn, electric control injection, electric control ignition In line, water cool, six-cylinder, dry cylinder liner, turbo charged inter cooling, lean burn, electric control injection, electric control ignition Bore/strokeMm 105/120 126/130 105/120 126/130 DisplacemenL 6.234 9.726 6.234 9.726 Rated outputKw 155 206 155 191 Rated speedR/min 2400 2200 2400 2200 Peak torqueNm 680 1060 680 980 Peak torque/speedR/min 1400-1600 1300-1500 1400-1600 1400-1600 Emission- Euro III(with oxygen catalyst converter), Euro II(without catalytic converter) Euro III(with oxygen catalyst converter), Euro II(without catalytic converter) Euro III(with oxygen catalyst converter), Euro II(without catalytic converter) Euro III(with oxygen catalyst converter), Euro II(without catalytic converter) fuel - CNG CNG LPG LPG Net weight Kg 600 850 600 850 Over all dimension(L×W×H) Mm 1214×723×1081 1411×931×1122 1214×723×1081 1411×931×1122 Suit for - 911 Meter Bus 1012 Meter Bus 911 Meter Bus 1012 Meter Bus WT615/226B Series CNG/LPG Bus Engine On the basis of Weichai WD615 and 226B diesel engines, WT615/226B series CNG/LPG engine has been developed by using closed loop control, three-way catalytic converter and ECU and optimizing gaseous fuel supply system and ignition system. The major parts of this series engine and original engine are universal and the high reliability of original engine has been retained. The emission data can meet Euro III standard. WT615 Turbocharged and Inter-cooled CNG Engine Lean mixture combustion technique, electronic high-energy ignition, multipoint sequential injection and electronic control gas supply have been adapted on the basis of WD615 turbocharged and inter-cooled diesel engine. The major parts of this engine and original diesel engine are universal, and the mounting dimensions are the same. The emission meets Euro III standard.