Engine model：Dongfeng Cummins 
4B3.9-G    
No. of cylinders：4(in-line)
Displacement(L):3.9
Induction system:natural inflow
   
Combustion system:A type fuel pump
Bore*Stroke(mm) :102×120
Compression ratio:16.5:1
Rated speed(rpm):1500/1800
Maximum power(KW/HP):27/36.7
speed control system:Mechanical/Elelectrical speed governor

Exhaust system exhaust smoke level(m3/min):4.27
Exhaust temperature(℃):410
Maxium exhaust back pressure(kPa):10

Induction system:Maxium intake
pressure(kPa): 5
Air consumption(m3/min) :1.98
Air flow(m3/min):136
"Fuel
system" "100% load fuel
consumption(L/H):6
Lubrication system The total capacity of oil(L):10.9
Oil consumption(g/kwh):≤4
Oil sump capacity(L):9.5
Rated oil pressure(kPa):345
Cooling system "Coolant capacity
(engine and radiator)(L):14.3
Thermostat opening temperature(℃)：82-95
"Maximum water
temperature(℃)：104
Alternator model(Stamford)：BCI184F
Alternator model(Marathon):GM-20-4
Alternator model(Engga) :—
Winding connection:4 wire 3 phase, Y type
Starter battery capacity（Ah):90*2
Starter battery voltage(V):24
No. of bearings :1
Power factor:0.8
Protection class:IP23
Altitude requirement(m):≤1000
Excitation mothod:Brushless
Insulation class temperature class：H/H
Steady-state voltage reguation:≤±1%
Alternator capacity:27.5KVA
Alternator efficiency:86.20%
Cooling air flow(m3/s):0.15
voltage regulate range:≥±5%
Steady-state voltage reguation:≤±1%

SIZE:
Open Type:external dimension of base fuel tank(mm):1860×740×1250
Net weight(kg):840
Slient Type:Silent type external dimension(mm):2230×1060×1680
Weight(kg):1300