SD490 Small horse Upgrades
  1.High speed,direct injection,power vacuum,BQ pump.
  2.Optimal combustion system,the torque large,horsepower
  more powerful,low fuel consumption.
  3.Automobile engine technology,low noise,small vibration.
  4.Green cleaner invironmental protection.
  5.Reliability,low failure rate.
Model SD490 SD490(upgrades) SD490Z SD490ZL SD490 National III
Type vertical in line,water-cooling,4-stroke vertical in line,water-cooling,4-stroke vertical in line,
water-cooling,4-stroke,turbocharged aspiration
vertical in line,
water-cooling,4-stroke,Turbocharged and intercooled
vertical in line,
water-cooling,4-stroke,Turbocharged and intercooled
Firing sequence 1-3-4-2 1-3-4-2 1-3-4-2 1-3-4-2 1-3-4-2
Num ofCylinders-Bore*Stroke (mm) 4-90×100 4-90×100 4-90×100 4-90×100 4-90×100
TotalDisplacement L 2.545 2.545 2.545 2.545 2.545
Rate power/speed kW/r/min 47/3200 50/3200 55/3200 60/3200 70/3200
Max.torque N.m/speed kW/r/min 150/2000~2200 165/2000~2200 184/2200 211/2200 245/2000~2200
Characteristics fuel consumption g/(kW·h) ≤235 ≤238 ≤220 ≤220 ≤210
Specific lube oil consumption % ≤0.8 ≤0.3 ≤0.3 ≤0.3 ≤0.1
Idle speed r/min 800±50 800±50 800±50 800±50 750±50
Full load bosch (bosch) ≤3.5 ≤3.5 ≤3.0 ≤3.0 ≤1.775
Speed up free bosch (bosch) ≤3.5 ≤3.5 ≤3.5 ≤3.5 ≤2.76
Start method Started by electricity Started by electricity Started by
electricity
Started by
electricity
Started by
electricity
Exhaust emission targets
Diemension (mm) 693×531×666 693×531×666 698×572×666 698×572×666 698×572×666
Net weight (kg) ≤230 ≤230 ≤230 ≤270 Not include medium cool machine ≤270