Specification (industrial)
Model
S3Q2
S3Q2-T
S4Q2
S4Q2-T
Type
4-cycle, water-cooled, diesel engine
Natural-aspirated
Turbocharged
Natural-aspirated
Turbocharged
Number of cylinders
3
3
4
4
Bore and stroke / mm
88x103
88x103
88x103
88x103
Displacement in / cc
1879
1879
2505
2505
Combustion system
Swirl chamber
Max. gross output (ISO 3046) / kW/rpm
23,2 / 2300
30,2 / 2400
34,6 / 2500
36,2 / 2400
Fuel system
In-line type
In-line type
Distributor type
In-line type
Charging alternator / V-A
12 / 50
12 / 50
12 / 50
12 / 50
Starting system / V-A
12 / 2,0
12 / 2,0
12 / 2,0
12 / 2,0
Fuel
Diesel fuel(ASTM No. 2-D)
Lub. oil capacity / litres
6,4
6,4
9,2
9,2
Dry weight (1500 / 1800rpm Spec.) / kg
160
165
195
200
Flywheel
SAE #7,5 (Thin type)
Flywheel housing
SAE #4 (Thin type)
Emission compliance
US EPA Tier 4a / EU Stage 3A


Specification (generator)
Model
S4Q2
Type
4-cycle, water-cooled, diesel engine
Natural-aspirated
Number of cylinders
4
Bore and stroke / mm
88x103
Displacement /cc
2505
Combustion system
Swirl chamber
Firing order
1-3-4-2
Charging alternator / V-A
12 / 50
Starting system / V-A
12 / 2,0
Fuel
Diesel fuel (ASTM No. 2-D)
Lub. oil capacity / litres
6,5
Dry weight (1500 / 1800rpm Spec.) / kg
195
Generator output (ISO 3046, gross)
50 Hz (1500rpm)
St-by / kW
21,0
Prime / kW
19,5
60 Hz (1800rpm)
St-by / kW
25,0
Prime / kW
23,5
Flywheel
SAE #7,5 (Thin type)
Flywheel housing
SAE #4 (Thin type)
Emission compliance
US EPA Tier 4a / EU Stage 2 constant