4DW Generating Set Engine

Rated speed: 1500rpm

Engine model	4DW81-23D	4DW91-29D	4DW92-35D	4DW93-42D
Type	4-cylinder 4-stroke
Air intake type	Natural	Natural	Turbocharged	Turbo& intercool
Cooling mode	Water cooling
Governor mode	Mechanical& electronic
Bore×Stroke(mm）	85×100	90×100
Compression ratio	17:1
Rated speed(rpm)	1500
Displacement(L)	2.27	2.54
Rated power(without fan)(kW)	17	21	26	31
Standby power(without fan)(kW)	19	23	29	34
Fuel consumption(g/kWh)	240	240	230	216
Oil consumption(L/h)	0.05	0.05	0.04	0.04
Steady state speed regulation(%)	≤5	≤5	≤5	≤5
Oil capacity including filter(L)	7.8	8	8	8
Emission compliant	StageⅡ
The flywheel shell interface	SAE4
The flywheel shell interface	Flywheel for 7.5″& 10″flexible coupling
Dry weight of base(kg)	220	220	240	240
Dry weight of Gen Pac(kg)	240	240	260	280
Overall dimension(base)(mm)	750×555×680	750×555×680	750×600×735
Overall dimension(G.P)(mm)	920×610×760		1120×810×760
Fan consumption（kW）	1.2	1.6	1.8	2
27℃ air consumption（m3/min）	1.4	1.7	2.1	2.4
Heat rejection of exhaust（kW）	17.2	17.4	20.6	23.1
Exhaust gas temperature after turbine（℃）	550	450	450	450
Exhaust gas flow（m3/min）	4.2	4.6	5.9	6.7
Heat rejection from engine（kW）	1.1	1.3	1.6	1.9
Heat rejection of coolant（kW）	11	13.7	16.9	17.1
Base configuration	Standard configuration(add on the base)
Engine with fan	Intake and exhaust sysytem: Air filter and connecting pipes; Connecting flang of exhaust pipe
Alternator 500W 14V Starter motor 3.5kW 12V	Cooling system: Radiator with connecting pipes; Fan guard; Belt guard

Rated speed: 1800rpm

Engine model	4DW81-28D	4DW91-38D	4DW92-42D	4DW93-50D
Type	4-cylinder 4-stroke
Air intake type	Natural	Natural	Turbocharged	Turbo& intercool
Cooling mode	Water cooling
Governor mode	Mechanical or electronic
Bore×Stroke(mm）	85×100	90×100
Compression ratio	17:1
Rated speed(rpm)	1800
Displacement(L)	2.27	2.54
Rated power(without fan)(kW)	20	28	31	37
Standby power(without fan)(kW)	22	31	34	41
Fuel consumption(g/kWh)	240	240	230	216
Oil consumption(L/h)	0.05	0.05	0.04	0.04
Steady state speed regulation(%)	≤5 or ≤3
Oil capacity including filter(L)	7.8	8	8	8
Emission compliant	StageⅡ
The flywheel shell interface	SAE4
The flywheel shell interface	Flywheel for 7.5″flexible coupling
Dry weight of base(kg)	220	220	240	240
Dry weight of Gen Pac(kg)	240	240	260	280
Fan consumption（kW）	2	2	2	2.2
Base configuration	Standard configuration(add on the base)
Engine with fan	Intake and exhaust sysytem: Air filter and connecting pipes; Connecting flang of exhaust pipe
Alternator 500W 14V Starter motor 3.5kW 12V	Cooling system: Radiator with connecting pipes; Fan guard; Belt guard