The Duramax I6 engine is a diesel engine available in select models of General Motors light-duty trucks and SUVs. Applications include the Chevrolet Silverado/GMC Sierra 1500, Chevrolet Suburban/GMC Yukon XL, Chevrolet Tahoe/GMC Yukon, and Cadillac Escalade (both short wheelbase and ESV). The engine 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(until 2024) LZ0(2023-present) |
| Layout | |
| Configuration | Inline 6 |
| Displacement | 2,993 cubic centimetres (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 | 277–305 horsepower (207–227 kW) |
| Specific power | 92.3-101.7 hp/L |
| Torque output | 460–495 pound-feet (624–671 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
edit- Displacement: 3.0L
- Configuration: Inline 6
- Horsepower: 277-305 hp @ 3750 rpm
- Torque: 460-495 ft-lb (624-671 nm) @ 1500 rpm
- RPO code: LM2(until 2024), LZ0(2023-present)
- Intercooler: liquid-to-air
- Block: Aluminum
- Head: Aluminum
- Crankshaft: Forged Steel
- Rods: Forged
- Pistons: Hypereutetic cast aluminum alloy - LZ0 upgraded to steel pistons
- 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 Flint Engine Operations.[4] A test by Car and Driver showed 40 MPG is possible when hypermiling.[5]
References
edit- ^ 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.