Duramax I6 engine

Last updated

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 calledLM2 (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 materialCast aluminum
Cylinder head materialCast aluminum
Valvetrain DOHC
Valvetrain drive system Chains
Compression ratio 15.2: 1
Combustion
Operating principle Diesel
Fuel systemCommon rail direct fuel injection
Management GM D1P-E98
Fuel type
  • ultra-low-sulfur diesel
  • B20 biodiesel
  • EN 590 diesel
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
Length908 millimetres (35.7 in)
Width914 millimetres (36.0 in)
Height903 millimetres (35.6 in)
Dry weight 212 kilograms (467 lb)
Emissions
Emissions target standard Tier 3 Bin 160

Engine details

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. This arrangement makes inspection and replacement very difficult and expensive. [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

  1. Archived at Ghostarchive and the Wayback Machine : What you don't know about the 3.0-liter Duramax diesel. YouTube .
  2. "Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel". 24 June 2019.
  3. Gibbs, Nick (23 June 2018). "GM's hopes for a diesel revival start in Turin". Automotive News Europe. Retrieved 27 December 2019.
  4. "GM Corporate Newsroom - United States - Company".
  5. "2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable". 10 December 2019.