W-series Diesel Engine (Fuwei)

W-series Diesel Engine (Fuwei): 4DW Diesel Engine
Main Features of 4DW Diesel Engine:
1. Full variety, covering a large range of power.
2. Optimization of combustion system, large torque, more powerful horsepower, lower fuel consumption.
3. Using vehicle's engine technology with low noise, less vibration.
4. Adopt air heater, good starting performance when used in low temperature environment.
5. High-speed direct injection, vacuum assist.
6. Good reliability, and low failure rate.
Applicable:
(1) 6m Buses, coaches.
(2) 0.5-3.5 tons of low-speed vehicles and pickups.
Technical Parameters of 4DW Diesel Engine:

Model	4DW81-50 NG2	4DW82-71 NG2	4DW93-84 NG2
Type	4 cylinders, in line,water-cooling.SDi	4 cylinders, in line, water-cooling turbocharge	4 cylinders, in line,water-cooling turbocharged inter-cooling
Bore×Stroke (mm×mm)	85×95	90×100	90×100
Total displacement(L)	2.156	2.54	2.54
Rated power/speed (kW/r/min)	37 / 3200	52/2900	64/ 2900
Max torque/speed (N. m/r/min)	127/ 2000 -2200	197/1900-2100	220/1900-2100
Min. fuel consumption at full load (g/kW. h )	≤235	≤245	≤225
Smoke (FSN)	≤2.0
Noise dB(A)	≤96.5
Emission (TAS)	EuroⅡ
Net weight (kg)	205	210	210

Model	4DW81 -49	4DW81 -50	4DW91 -(A)63	4DW82 -62	4DW91 -73	4DW83 -63	4DW83 -73	4DW93 -80	4DW93 -84
Type	4 cylinders, in line, director injection, SDi			4 cylinders, in line, director injection, turbocharge			4 cylinders, in line, director injection, turbocharged inter-cooling
Bore×Stroke (mm×mm)	85×100	85×95	90×100	85×95	90×100	85×95	85×95	90×100	90×100
Total displacement(L)	2.27	2.156	2.545	2.16	2.54	2.16	2.156	2.54	2.54
Rated power/speed (kW/r/min)	36/ 3000	37/ 3200	46/ 3200	50/ 3200	58/ 3200	46/ 3200	58/ 3000	62/ 2800	66/ 3000
Max torque/speed (N. m/r/min)	132/ 2000 -2200	127/ 2000 -2200	155/ 2000 -2200	168/ 2000 -2200	188/ 2000 -2200	149/ 2000 -2200	200/ 1800 -2100	220/ 1800 -2100	220/ 1800 -2100
Min. fuel consumption at full load (g/kW. h )	≤235			≤245			≤235
Smoke (FSN)	≤2.0
Noise dB(A)	≤96.5
Emission (TAS)	EuroⅠ			EuroⅡ			EuroⅡ
Net weight (kg)	205			210			210