Duramax I6 engine
The Duramax I-6 is a diesel engine available in select models of General Motors light duty trucks and SUVs. Applications include the Chevrolet Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, Yukon XL and the Cadillac Escalade. The Duramax diesel was developed together with Opel, who are manufacturing three- and four-cylinder versions displacing 1.5 and 2.0 liters, using the same engine architecture.
| Duramax I-6 | |
|---|---|
| Overview | |
| Also called | LM2 |
| Layout | |
| Configuration | Inline 6 |
| Displacement | 2.993 litres (182.6 in3) |
| Cylinder bore | 84 millimetres (3.3 in) |
| Piston stroke | 90 millimetres (3.5 in) |
| Cylinder block material | Cast aluminum |
| Cylinder head material | Cast aluminum |
| Valvetrain | DOHC |
| Valvetrain drive system | Chains |
| Compression ratio | 15.0: 1 |
| Combustion | |
| Operating principle | Diesel |
| Fuel system | Common rail direct fuel injection |
| Management | GM D1P-E98 |
| Fuel type |
|
| Output | |
| Power output | 277 horsepower (207 kW) |
| Specific power | 92.3 hp/L |
| Torque output | 460 pound-feet (620 N⋅m) |
| Dimensions | |
| Length | 908 millimetres (35.7 in) |
| Width | 914 millimetres (36.0 in) |
| Height | 903 millimetres (35.6 in) |
| Dry weight | 212 kilograms (467 lb) |
| Emissions | |
| Emissions target standard | Tier 3 Bin 160 |
Engine details
- Displacement: 3.0L
- Configuration: I-6
- Horsepower: 277 hp @ 3750 rpm
- Torque: 460 ft-lb @ 1500 rpm
- RPO code: LM2
- Intercooler: liquid-to-air
- Block: Aluminum
- Head: Aluminum
- Crank: Forged Steel
- Rods: Forged
- Pistons: Hypereutetic cast aluminum alloy
- Cylinder liners: Iron
The engine's timing components are located at the rear of the engine, and feature timing chains to drive the camshafts and high pressure fuel pump, and a wet belt to drive the oil pump.[1]
Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in Turin, Italy.[2][3] The engine is being produced at the GM Flint Engine Plant in Flint, Michigan, USA.[4] Multiple testing has shown 40 MPG is possible when hypermiling.[5]
References
- ^ Archived at Ghostarchive and the Wayback Machine: What you don't know about the 3.0-liter Duramax diesel. YouTube.
- ^ "Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel".
- ^ Gibbs, Nick (23 June 2018). "GM's hopes for a diesel revival start in Turin". Automotive News Europe. Retrieved 27 December 2019.
- ^ "GM Corporate Newsroom - United States - Company".
- ^ "2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable". 10 December 2019.