4045TF285 Constant Speed

4045TF285 Constant Speed

  • 4045TF285 Constant Speed
  • 4.5L PowerTech™
  • 71 kW (95 hp)


Emissions Certifications

IMO Tier 2 
EPA Tier 3 

General data

Number of cylinders4
Displacement – L (cu in)4.5 (275)
Bore and Stroke – mm (in)106 x 127 (4.17 x 5.0)
Engine TypeIn-line, 4-cycle
Length – mm (in) to rear of block867 (34.1)
Width – mm (in)680 (26.8)
Height – mm (in)1055 (41.5)
Weight, dry – kg (lb)491 (1082)

Performance data

Rated speed78 kW @ 1800 rpm
Engine power - Standby kW (hp)78 (105)
Engine power - Prime kW (hp)71 (95)
Generator efficiency %88-92
Rated fan power4.7 (6.3)
Power factor0.8
Calculated generator set output - Standby kVa (kWe)81-84 (65-67)
Calculated generator set output - Prime kVa (kWe)73-77 (59-61)


  • Cross flow head design that provides excellent breathing from a lower cost two-valve cylinder head

  • The HPCR fuel system provides variable common-rail pressure, multiple injections, and higher injection pressures, up to 1600 bar (23,000 psi). It also controls fuel injection timing and provides precise control for the start, duration, and end of the injection.

  • Fixed geometry turbochargers are sized for a specific power range and optimized to provide excellent performance across the entire torque curve. They are also designed to maximize fuel economy between the engine's rated speed and peak torque.

  • In turbocharged engines, the air is pre-compressed. Due to the higher pressure, more air is supplied into the combustion chamber allowing a corresponding increase in fuel injection which results in greater engine output.

  • The HPCR fuel system and engine control unit (ECU) allow for multiple fuel injections. The number of fuel injections, based on speed and load, help contribute to lower combustion temperatures, which reduce the formation of NOx and particulates. The multiple injection strategy also provides an added benefit of noise reduction.

  • PowerTech E engines offer electronically controlled fuel systems with improved cold-start performance, precise engine speed control, torque curve shaping and more. Because these systems have less need for redundant sensors, add-on electronic governors, and shutdown devices - they result in a lower total installed cost.

  • Power bulge feature

  • Self-adjusting poly-vee fan drive