4045HF275 4.5L Generator Drive Engine

4045HF275 4.5L Generator Drive Engine


  • PowerTech™ M
  • Standby: 108-117 kW (145-157 hp) @ 1800 rpm
  • Prime: 98-106 kW (131-142 hp) @ 1800 rpm
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Dynamically balanced crankshaft

  • Induction-hardened journals for long hours of reliable service
  • Robust design to drive machinery from the front of the crankshaft
  • Supported by five main bearings

Forged-steel connecting rods

  • 45-degree connecting rod/cap-joint design allows the use of large connecting rod bearings for increased durability

Replaceable wet-type cylinder liners

  • Provide excellent heat dissipation
  • Precision machined for long life
  • Rebuild to original specifications

Easy to apply, easy to install

  • Front and rear engine mounting pads on the side of the block facilitates installations
  • Either-side service for filters and service points
  • All connection points in common locations make it easy to install or package
  • Engine mounted ECU and electronic speed control simplify installation and packaging

Smooth operation

  • Smooth vibration with full length engine balancers

Compact size

  • Short length is ideal for both skid and packaged installations
  • High mount or low mount turbocharger position to meet packing requirements

World-class performance

  • Excellent fuel economy and low oil consumption

Fuel system controls

  • Electronically controlled rotary fuel injection pump with variable timing resulting in excellent fuel economy and excellent performance
  • Self diagnostics and protection
  • 3-5% Droop Governing
  • 12V or 24V Electric Shutoff


Emissions certifications

EPA Tier 2

General engine data

Model 4045HF275
Number of cylinders 4
Displacement-- L (cu in) 4.5 (275)
Bore and Stroke-- mm (in) 106 x 127 (4.17 x 5.00)
Compression Ratio 17.0:1
Engine Type In-line, 4-Cycle
Aspiration Turbocharged and air-to-air aftercooled
Length - mm (in) 867 (34.1)
Width-- mm (in) 637 (25.1)
Height-- mm (in) 979 (38.5)
Weight, dry - kg (lb) 451 (994)

Performance data range

Hz (rpm) 60 ( 1800 )
Generator Efficiency % 88-92
Power Factor 0.8
Engine power - Prime kW 98-106
Engine power - Prime hp 131-142
Engine power - Standby kW 108-117
Engine power - Standby hp 145-157
Rated Fan Power - kW 5.4-5.9
Rated Fan Power - hp 7.2-7.9
Calculated generator set output - Prime kWe 82-92
Calculated generator set output - Prime kVA 102-115
Calculated generator set output - Standby kWe 90-102
Calculated generator set output - Standby kVA 113-128