Cat® C4.4 Diesel Engine
The Cat® C4.4 Industrial Diesel Engine is offered in ratings ranging from 74-129.4 bkW (99-173.5 bhp) @ 2200 rpm, which meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. U.S. EPA Tier 4 Interim equivalent and EU Stage IIIB equivalent ratings are also available using U.S. EPA and EU Flex provisions.
Specifications
Equipment
Units:
Power Rating
Maximum Power
173.5 HP
129.4 kW
Maximum Torque
553 lb-ft @ 1400 rpm
750 Nm @ 1400 rpm
Rated Speed
2200 rpm
Minimum Power
93.9 HP
70 kW
Emission Standards
Emissions
U.S. EPA & CARB Tier 4 Final
General
Engine Configuration
Inline 4
Bore
4.1 in
105 mm
Stroke
5 in
127 mm
Displacement
268.5 in³
4.4 l
Compression Ratio
16.5:1
Aspiration
Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Combustion System
Direct Injection
Rotation from Flywheel End
Counterclockwise
Aftertreatment
DOC+SCR or DOC+DPF+SCR
Engine Dimensions - Approximate
Length
33.3 in
845 mm
Width
29.1 in
742 mm
Height
34.1 in
868 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
926 lb
420 kg
Aftertreatment Dimensions
Length
26.5 in
675 mm
Width
18.8 in
478 mm
Height
15.3 in
390 mm
Aftertreatment Dimensions*
Diameter
10.6 in
270 mm
Aftertreatment Dimensions
Weight
99 lb
45 kg
Standard Equipment
Air Inlet System
Control System
Cooling System
Flywheels and Flywheel Housing
Fuel System
Lube System
Power Take Off
General
U.S. EPA Tier 4 Interim Equivalent, EU Stage IIIB Equivalent Aftertreatment / Clean Emissions Control Equipment
U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment/ Clean Emissions Control Equipment