The Cat® C13 Diesel Engine
All new levels of power and performance for the R1700 start with the engine. Where the R1700G made good use of the power from the C11, this new machine and its performance goals demanded more – so we moved up in size to the C13.
The C13 is a heavy-duty performer with an in-line, 6-cylinder configuration that is turbo-charged and air-to-air aftercooled. In the R1700, this engine is set at a horsepower rating of:
- 257 kW or 345 hp at 2,050 rpm for Stage V engines.
- 269 kW or 361 hp at 1,800 rpm for engines that emit equivalent to Tier 3/Stage IIIA or Tier 2/Stage II VR (ventilation reduction).
The C13 is capable of high altitude operation and will begin to derate after:
- Altitude 2895 m (9,500 ft) for Stage V engines.
- Altitude 3505 m (11,500 ft) for Tier 3/Stage IIIA engines.
- Altitude 3200 m (10,500 ft) for Tier 2/Stage II VR engines.
The C13 features the Cat MEUI (mechanically-actuated electronic unit injection) system for providing high pressure injection across the engines operating speed range. This engine requires multiple injections of highly pressurized and atomized fuel during the combustion cycle. Precisely shaping the combustion cycle lowers combustion chamber temperatures, which generates fewer emissions, optimizes fuel combustion; translating into more work per liter (gallon) of fuel burned.
Aftertreatment for the Stage V engine configuration is chassis mounted for convenience and includes a Diesel Emission Fluid (DEF) tank sized to match the 12-hour capacity of the fuel tank. Aftertreatment components are carefully guarded and heat wrapped. The system uses regeneration to manage emissions inside the Clean Emissions Module (CEM). Regeneration can be set to automatic – the operator is informed when regeneration is happening, and the machine takes care of the process while continuing to operate.
Lock-Up Clutch Torque Converter
Part of the speed on grade improvement comes from a new lock-up clutch torque converter. It is the same component used in our larger LHD range and it has been sized for extreme durability. It engages automatically as the machine shifts into second gear.
Transmission
The Cat transmission on this machine is also newly resized for durability. It is now governed by our APECS software that allows the transmission to comfortably shift under higher torque conditions. This allows the machine to climb grades more quickly by reducing lost momentum between shifts, and it can potentially allow the machine to climb in a lower gear saving fuel. This will be determined by your mine conditions.
ECPC or Electronic Clutch Pressure Control is working in tandem with APECS to reduce pressure spikes inside the transmission and ensure its long-term durability. The result is more efficient delivery of rimpull for production. These controls also improve the ride quality of the machine.
We've improved oil flow to the output gear group for long term durability, and you'll change the oil every 1,000 hours reducing maintenance time and cost.
Axles
Our axles have grown to manage the added weight and capacity of the machine. We've increased the axle housing thickness for abrasion protection and corrosion resistance. There has been a slight track width increase of 64 mm (2.51 in) with these new axles. The R1700 has the same differential used on our R2900 machine. Here are the major updates to the axle:
- Larger spindles.
- Wider planetary gear.
- Larger dual cone seal.
- Upgraded planet shaft retention.
- Larger trunnions and trunnion supports and trunnion bearings.
Electro-Hydraulic Braking
Adding EH braking allowed us to substantially improve the traction control system, engine overspeed limiting, ground speed limiting and improved braking under remote control.
