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Cat® C7.1 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 100, 118, and 150 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards. The C7.1 also has three phase ratings of 60 Hertz at 118, 150, 175, and 175 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards.

Generator Set Specifications

Minimum Rating 100 ekW (125 kVA) 100 ekW (125 kVA) Less
Maximum Rating 200 ekW (250 kVA) 200 ekW (250 kVA) Less
Frequency 50 Hz or 60 Hz 50 Hz or 60 Hz Less
Speed 1500 rpm (50 hz) or 1800 rpm (60 hz) 1500 rpm (50 hz) or 1800 rpm (60 hz) Less
Emissions/Fuel Strategy EPA Tier 3, IMO II, EU CC2 EPA Tier 3, IMO II, EU CC2 Less

Engine Specifications

Engine Model In-line 6, 4-Stroke-Cycle Diesel In-line 6, 4-Stroke-Cycle Diesel Less
Aspiration TA TA Less
Bore 4.13 in 105.0 mm Less
Stroke 5.3 in 135.0 mm Less
Displacement 433.3 in³ 7.1 l Less
Governor Type Electronic Electronic Less
Fuel System Common Rail Fuel System Common Rail Fuel System Less

Generator Set Dimensions

Width 37.6 in 956.0 mm Less
Height 49.7 in 1263.0 mm Less
Weight 1652 -1840 kg, 3634-4026 lb 1652 -1840 kg, 3634-4026 lb Less
Length 76.2 in/1935 mm (minimum), 83.3 in/2116 mm (maximum) 76.2 in/1935 mm (minimum), 83.3 in/2116 mm (maximum) Less

Generator Specifications

Pitch 2/3 2/3 Less
Number of Leads 12 12 Less
Insulation Class H Class H Less
IP Rating IP23 Water protection IP23 Water protection Less
Voltage Regulator Solid state Solid state Less

Common Rail Fuel System

Control Panel

C7.1 Standard Equipment

  • Open Crankcase Ventilation (OCV) system
  • Turbocharger, jacket water cooled
  • Integrated coolant lines into manifold utilizing EGR circuit

  • Governor droop kit
  • Panels available in RH, LH, and rear configurations with a remote mount option
  • Electronic diagnostics and fault logging
  • Electronic governor
  • Electronic Control Module (ECM)
  • SAE J1939 data link Ratings Only
  • Electronic fuel/air ratio control

  • Coolant recovery tank
  • Integrated heat exchanger and aftercooler
  • Jacket Water Heater
  • Compact design integral coolant passages
  • Thermostat and housing
  • Jacket Water Heater 120/240V option
  • Auxiliary seawater pump, gear driven
  • Engine mounted heat exchanger, removable tubeBundle (for sea water) (heat exchanger engines only)
  • Engine oil cooler
  • Auxiliary sea water lines
  • Keel cooling

  • Dry Elbow
  • Dry Flange
  • Exhaust Temp Sensor
  • Water-cooled exhaust manifold & turbocharger
  • 152 mm (6 in) round flanged outlet
  • Dry Elbow/Flange options

  • Flywheel Housing, SAE No. 2
  • Flywheel, 134 teeth
  • SAE standard rotation

  • Flexible Fuel Lines
  • Common Rail Fuel System
  • Simplex and Duplex Fuel options
  • Flexible fuel line option
  • Fuel transfer pump, gear driven

  • 12 leads
  • 3 phase Brushless
  • Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
  • 2/3 Pitch
  • Broad voltage band
  • IP23 Water protection
  • Solid state voltage regulator with integral voltage adjustment
  • Class H insulation
  • Generator temperature rise exceeds marine society requirements for 105 C @ 50 C ambient - prime 85 C @ 50 C ambient - prime Connection poles

  • Dipstick
  • Crankcase breather
  • Simplex and Duplex options
  • Oil filter, RH service
  • Oil filler, in valve cover and timing case (option)
  • Oil level gauge, RH service
  • Oil pan
  • Oil pan drain, RH`
  • Lubricating oil
  • Engine oil pump (gear driven)

  • Skiddable base frame
  • Anti vibration isolators between base and engine-generator

  • Crankshaft Pulley
  • Poly-V groove for alternator drive
  • PTO Shaft Kit (optional)

  • Torsional vibration damper and guard
  • Paint, Caterpillar yellow
  • Lifting eyes
  • Protective lifting covers
  • Literature
  • Battery disconnect switch
  • Plastic wrap packaging
  • Note: Keel-cooled gen sets do not include the keel cooler(s).
  • Engine is certified to D2/E2 emissions cycles