Caterpillar (USA) produces the CAT C9 ACERT industrial engine, which is 6-cylinder, in-line, 4-stroke, direct injection, turbocharged with air-to-air aftercooling, electronic control unit (ADEM TM A4), HEUI TM fuel system, high oil filter efficiency, lighter cylinder block design, and split connecting rods.
Caterpillar C9 engines produce 278–381 horsepower at 1800–2200 rpm of crankshaft rotation. The engine uses Advanced Combustion Emissions Reduction Technology (ACERT) to meet Tier 3 (US EPA) and Stage IIIA (European Union requirements) emission standards. It addresses four methods for lowering exhaust gas toxicity, including:
- fuel system,
- clean air intake system,
- fuel combustion process,
- and electronic control and management system implementation.
Specifications
| Number of cylinders | 6 | ||||
| Configuration | inline | ||||
| Cylinder bore, mm | 112 | ||||
| Piston stroke, mm | 149 | ||||
| Displacement, cc | 8,8 | ||||
| Compression Ratio | 16.1:1 | ||||
| Engine operating mode * | A | B | C | D | E |
| Power output, kW (hp) | 205 (278) | 224 (304) | 242 (329) | 261 (355) | 280 (381) |
| Crankshaft speed, rpm | 1800-2200 | ||||
| Specific fuel consumption, g/(kW*h) at 1800 rpm at 100% power |
214,9 | 213,6 | 211,3 | 212,3 | — |
| Fuel pump | low pressure | ||||
| Fuel filters — fine cleaning |
top quality, 2 microns | ||||
| Turbine | Turbocharging with air-to-air cooling system | ||||
| Cooling system | Thermostats and housing, vertical outlet | ||||
| Cooling system volume, liters | 13.9 (without radiator filling volume) | ||||
| Water pump | centrifugal water pump, water pump inlet | ||||
| Oil system volume, liters | 32 | ||||
| Dimensions, mm (LxWxH) | 1091,4х827,2х1022,8 | ||||
| Weight, kg | 776 (dry weight) | ||||
IND-A mode (continuous operation) is the engine’s mode of continuous operation under extreme circumstances, in which it runs at its maximum power and speed for 100% of the working time without interruption or intermittent load reduction.
IND-B mode is an engine operation mode where the power and/or rotation speed periodically drop below the maximum value (the amount of time spent operating at full load does not exceed 80% of the total operating time).
The engine runs in IND-C mode (intermittent mode), which is characterized by a periodic increase in power and/or speed to maximum values (the amount of time spent operating at full load does not exceed 50% of the total operating time).
IND-D mode is an engine operating mode that permits periodic power increases up to the maximum value (the amount of time spent operating at full load does not exceed 10% of the total operation time).
When starting or in the event of an unexpected overload, IND-E mode requires the maximum power for a brief period of time. For emergency operations (run time at full load does not exceed 5% of the total run time) where the standard power level is insufficient.
Engine Operation:
This engine’s power is produced by volume rather than strong forcing, which greatly lessens the strain on the engine’s components and improves fuel efficiency. Fuel efficiency has increased by 4% from the previous version thanks to the redesigned fuel system. Maximum torque can be achieved at 1800 rpm by using a variable speed supercharger. With 381 horsepower of engine braking power, the compression brake prolongs pad life. Excellent craftsmanship increases the engine’s dependability.