Caterpillar C1.5

Caterpillar C1.5 engineThe Caterpillar C1.5 is a 1.5 L (1,496 cc, 91.29 cu·in) natural aspirated or turbocharged three-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Caterpillar Inc. for general-purpose applications.

The Cat C1.5 engine has a three-cylinders, cast-iron cylinder block, overhead valve design, indirect injection fuel system, 12 volts electric starter motor, and 12 Volts (65 amp) alternator and glow plug starting aid. This engine used a belt-driven coolant pump and coolant temperature switch. The lubrication system consists of a closed-circuit breather, spin-on lube oil filter, lube oil pressure switch, and lube oil sump.

Naturally aspirated version of the CAT C1.5 engine produced:

  • EU Stage IIIA emission standards: From 28.4 PS (20.9 kW; 28.0 HP) at 2,200 rpm to 34.1 PS (25.1 kW; 33.7 HP) at 3,000 rpm of maximum output power and 79.9 N·m (8.1 kg·m, 58.9 ft·lb) at 3,000 rpm of torque.
  • U.S. EPA Tier 4 Final emission standards: 24.9 PS (18.4 kW; 24.7 HP) at 2,100 rpm.
  • U.S. EPA Tier 4 Interim emission standards: From 28.2 PS (20.7 KW; 27.8 HP) at 2,200 rpm to 34.1 PS (25.1 KW; 33.7 HP) at 3,000 rpm of peak horsepower.

Turbocharged version of the C1.5 engine produced:

  • EU Stage IIIA emission standards: From 31.4 PS (23.1 kW; 31.0 HP) at 2,200 rpm to 40.6 PS (30.0 kW; 40.2 HP) at 3,000 rpm of maximum output power.
  • U.S. EPA Tier 4 Final emission standards: From 24.9 PS (18.4 kW; 24.7 HP) at 1,800 rpm to 37.4 PS (27.6 kW; 37.0 HP) at 3,000 rpm of maximum output power.
  • U.S. EPA Tier 4 Interim emission standards: From 31.4 PS (23.1 KW; 31 HP) at 2,200 rpm to 40.8 PS (30.0 KW; 40.2 HP) at 3,000 rpm of power.
  • Power unit C1.5 produced:

    • EU Stage IIIA emission standards: 34.1 PS (25.1 kW; 33.7 HP) at 3,000 rpm.
    • U.S. EPA Tier 4 Final emission standards: 36.7 PS (27.0 KW; 36.2 HP) at 2,800 rpm
    • U.S. EPA Tier 4 Interim emission standards: 32.9 PS (24.2 KW; 32.5 HP) at 3,000 rpm

    General information

    Engine Specifications
    Engine model Cat C1.5
    Engine type 4-stroke, OHV, three-cylinders
    Displacement 1,496 cm3, (91.29 cu·in)
    Max. horsepower Naturally aspirated
    EU Stage IIIA:
    28.4 PS (20.9 kW; 28.0 HP) at 2,200 rpm to
    34.1 PS (25.1 kW; 33.7 HP) at 3,000 rpm
    U.S. EPA Tier 4 Final:
    24.9 PS (18.4 kW; 24.7 HP) at 2,100 rpm
    U.S. EPA Tier 4 Interim:
    28.2 PS (20.7 KW; 27.8 HP) at 2,200 rpm to
    34.1 PS (25.1 KW; 33.7 HP) at 3,000 rpm

    Turbocharged
    EU Stage IIIA:
    31.4 PS (23.1 kW; 31.0 HP) at 2,200 rpm to
    40.6 PS (30.0 kW; 40.2 HP) at 3,000 rpm
    U.S. EPA Tier 4 Final:
    24.9 PS (18.4 kW; 24.7 HP) at 1,800 rpm to
    37.4 PS (27.6 kW; 37.0 HP) at 3,000 rpm
    U.S. EPA Tier 4 Interim:
    31.4 PS (23.1 KW; 31 HP) at 2,200 rpm to
    40.8 PS (30.0 KW; 40.2 HP) at 3,000 rpm

    Power unit
    EU Stage IIIA:
    34.1 PS (25.1 kW; 33.7 HP) at 3,000 rpm
    U.S. EPA Tier 4 Final:
    36.7 PS (27.0 KW; 36.2 HP) at 2,800 rpm
    U.S. EPA Tier 4 Interim:
    32.9 PS (24.2 KW; 32.5 HP) at 3,000 rpm

    Max. torque 79.9 N·m (8.1 kg·m, 58.9 ft·lb) at 3,000 rpm
    Cooling system Liquid-cooled
    Lubricating system Pressure feed
    Fuel system Indirect injection
    Fuel used Unleaded gasoline (octane number 86 or higher)
    Starting system Starter motor 12V
    PTO shaft rotation Counterclockwise (from PTO shaft side)
    Dimensions (L x W X H) Engine: 572 x 453 x 643 mm (22.5 x 17.8 x 25.3 in)
    Engine (Turbo version): 572 x 512 x 643 mm (22.5 x 20.2 x 25.3 in)
    Power unit: 820 x 497 x 793 mm (32.3 x 19.6 x 31.2 in)
    Dry weight Engine: 149.0 kg (328.5 lbs)
    Engine (Turbo version): 156.5 kg (345.0 lbs)
    Power unit: 175.0 kg (385.8 lbs)

    Cylinder Block and Head

    Cylinder bore and piston stroke are 84.0 mm (3.31 in) and 90.0 mm (3.54 in), respectively. Compression ratio rating is 22.5:1. The engine used cast iron engine block and cast iron exhaust manifold.

    Cylinder block
    Compression ratio: 22.5:1
    Cylinder bore: 84.0 mm (3.31 in)
    Piston stroke: 90.0 mm (3.54 in)
    Crankshaft center distance: 45 mm (1.77 in)
    Cylinder head
    Valve arrangement: OHV, belt driven
    Valves:: 2 per cylinder,(6 valves in total)

    Service Data

    The engine oil with a viscosity of SAE 10W-30 is recommended for the C0.5, refilling oil capacity is 6.0 L (6.34 US. qt, 5.28 Imp. qt.).

    Oil system
    Lubrication system: Pressure feed
    Oil capacity: 6.0 L (6.34 US. qt, 5.28 Imp. qt.)
    Cooling system
    Cooling system: Liquid-cooled
    Capacity: 2.6 L (2.75 U.S. qts)
    Fuel system
    Type: Indirect injection

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