OverviewThe Perkins® 904J-E28T open power unit (IOPU) provides a factory-integrated engine and aftertreatment solution compliant with EU Stage V, U.S. EPA Tier 4 Final and Japan 2014 (Tier 4 Final) emissions regulations. Designed for minimal re-engineering, the package offers configurable options for radiator, air and fuel systems to suit diverse off-highway equipment applications.
Key SpecsMaximum Power: 55 kW
Maximum Torque: 300 Nm @ 1600 rpm
Emissions: EU Stage V / U.S. EPA Tier 4 Final / Japan 2014 (Tier 4 Final)
Features At A Glance- Low-cost machine installation: ECM and aftertreatment sensors pre-installed in the IOPU; bespoke wiring harness and fuel filter with water-in-fuel sensor included; optional engine control panel for monitoring and speed control.
- High configurability: multiple engine and cooling configurations available to match different machine types; standard and heavy-duty options for radiator, air filter and fuel filtration.
- Optimised ownership costs: fuel consumption tuned for off-highway cycles; hydraulic tappets, multi-vee belts and 500-hour service intervals to reduce maintenance downtime and cost.
Standard Equipment (selected highlights)- Engine-mounted aftertreatment as standard (DOC + DPF).
- Air system: standard and heavy-duty air cleaners available.
- Cooling system: 50:50 water–glycol mix; guidance for cooling system design and validation; engine-mounted radiator with top tank temperature rating of 108°C; pusher or puller fan options; radiator erosion screen available.
- Electrical & electronics: 12V system; CANbus J1939 data interface; instrument control panel option; full electronic control; glow plugs for cold start; high-capacity alternator and starter motor options; sensors and robust wiring harness included.
- Flywheel & housing: SAE3 flywheel housing and flywheel with pilot bore; multiple interfaces for common transmissions and hydraulic pumps.
- Fuel system: electronic high-pressure common rail; IOPU-mounted fuel filter; standard and heavy-duty fuel filtration; water-in-fuel sensor for early warning.
- General: cold-start capable to −25°C with standard equipment; supplied painted or lacquered.
- Oil system: oil filter mounting options on either side of the engine plus remote option; dipstick position and length options; high-incline sump (35° continuous in all directions).
- PTO: SAE-A and SAE-B interfaces available.
Product Specifications (representative values)Power Rating:
Maximum Power: 55 kW
Maximum Torque: 300 Nm @ 1600 rpm
Rated Speed: 2200–2400 rpm
Minimum Power: 55 kW
Emission Standards:
Emissions: EU Stage V / U.S. EPA Tier 4 Final / Japan 2014 (Tier 4 Final)
General:
Number of Cylinders: 4 inline
Cycle: 4-stroke
Bore: 90 mm
Stroke: 110 mm
Displacement: 2.8 l
Compression Ratio: 17.0:1
Aspiration: Turbocharged
Combustion System: Direct injection
Rotation from Flywheel End: Anti-clockwise
Aftertreatment: DOC + DPF
Cooling System: Liquid
Engine Dimensions*:
Length: 1191 mm
Width: 809 mm
Height: 966 mm
Dry Weight: 511 kg
Disclaimer:
*Final dimensions dependent on selected options
Technical specifications- Model: 904J-E28T
- Maximum Power: 55 kW
- Maximum Torque: 300 Nm @ 1600 rpm
- Emissions: EU Stage V / U.S. EPA Tier 4 Final / Japan 2014 (Tier 4 Final)
- Number of Cylinders: 4 inline
- Displacement: 2.8 l
- Bore x Stroke: 90 mm x 110 mm
- Compression Ratio: 17.0:1
- Aspiration: Turbocharged
- Aftertreatment: DOC + DPF (engine-mounted)
- Cooling System: Liquid
- Rated Speed: 2200–2400 rpm
- Dry Weight: 511 kg
- Dimensions (L×W×H): 1191 mm × 809 mm × 966 mm (final dimensions depend on selected options)