| Revision as of 16:33, 26 March 2024 edit2603:8000:193f:265:4854:7e9a:a796:5f40 (talk) Edited specific output to include new 305hp configuration.← Previous edit | Revision as of 01:55, 23 November 2024 edit undoDiesel60 (talk | contribs)15 editsm Added more informationTag: RevertedNext edit → | ||
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| *Cylinder liners: Iron | *Cylinder liners: Iron | ||
| The 3.0 Duramax LM2 engine block was constructed with a deep-skirt cast-aluminum alloy fitted with an aluminum head. The engine utilized a dual overhead camshaft (DOHC) valvetrain with 4 valves per cylinder for a total of 24 valves. The rotating assembly within the 3.0L Duramax engine was designed to be lightweight and durable by employing hypereutectic aluminum pistons and forged-steel connecting rods. A unique feature of the 3.0L Duramax engine design was the use of Rear Cam Drive, which means the camshaft gear was located on the back of the engine towards the firewall. The LM2 Duramax utilized a high-pressure common-rail fuel system. With two chain-driven pistons inside the injection pump, it was capable of producing up to 36,250 PSI of rail pressure. To handle that fuel rail pressure were solenoid style fuel injectors that utilized 9-hole nozzles that produced a precise fuel spray that led to less noise and smooth idling. Fitted to the 3.0 Duramax was a Garrett variable-geometry turbocharger that was liquid-cooled. A water-to-air intercooler was added and provided cooler and denser air for a cleaner and more efficient combustion process. <ref>{{Cite web|url=https://www.xtremediesel.com/parts-accessories-for-2020-2023-gm-trucks-with-3-0l-duramax-lm2-engines/|title=LM2 & LZ0 Duramax 3.0 Engines|website=XDP|date=22 November 2024}}</ref> | |||
| 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.<ref>Archived at {{cbignore}} and the {{cbignore}}: {{cite AV media| url = https://www.youtube.com/watch?v=NFNsg7bCtdA| title = What you don't know about the 3.0-liter Duramax diesel | website=]}}{{cbignore}}</ref> | |||
| Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in ], Italy.<ref>{{Cite web|url=https://www.gm-trucks.com/forums/topic/225182-just-do-it-2020-silverado-1500-30l-duramax-diesel/|title=Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel}}</ref><ref>{{cite web |last1=Gibbs |first1=Nick |title=GM's hopes for a diesel revival start in Turin |url=https://europe.autonews.com/article/20180623/COPY/306239996/gm-s-hopes-for-a-diesel-revival-start-in-turin |website=Automotive News Europe |accessdate=27 December 2019 |language=en |date=23 June 2018}}</ref> The engine is being produced at ].<ref>{{Cite web|url=https://media.gm.com/media/us/en/gm/company_info/facilities/powertrain/flint.html|title=GM Corporate Newsroom - United States - Company}}</ref> A test by ] showed 40 MPG is possible when ].<ref>{{Cite web|url=https://www.caranddriver.com/reviews/a28148602/2020-chevrolet-silverado-3-0l-diesel-drive/|title=2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable|date=10 December 2019}}</ref> | Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in ], Italy.<ref>{{Cite web|url=https://www.gm-trucks.com/forums/topic/225182-just-do-it-2020-silverado-1500-30l-duramax-diesel/|title=Just do It! - 2020 Silverado 1500 3.0L Duramax Diesel}}</ref><ref>{{cite web |last1=Gibbs |first1=Nick |title=GM's hopes for a diesel revival start in Turin |url=https://europe.autonews.com/article/20180623/COPY/306239996/gm-s-hopes-for-a-diesel-revival-start-in-turin |website=Automotive News Europe |accessdate=27 December 2019 |language=en |date=23 June 2018}}</ref> The engine is being produced at ].<ref>{{Cite web|url=https://media.gm.com/media/us/en/gm/company_info/facilities/powertrain/flint.html|title=GM Corporate Newsroom - United States - Company}}</ref> A test by ] showed 40 MPG is possible when ].<ref>{{Cite web|url=https://www.caranddriver.com/reviews/a28148602/2020-chevrolet-silverado-3-0l-diesel-drive/|title=2020 Chevy Silverado 1500 3.0L Duramax is Smoother Than it is Capable|date=10 December 2019}}</ref> | ||
Revision as of 01:55, 23 November 2024
See also: DuramaxThe 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.
Reciprocating internal combustion engine| Duramax I-6 | |
|---|---|
| Overview | |
| Also called | LM2(until 2024) LZ0(2023-present) |
| Layout | |
| Configuration | Inline 6 |
| Displacement | 2,993 cubic centimetres (182.6 in) |
| 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
- 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 3.0 Duramax LM2 engine block was constructed with a deep-skirt cast-aluminum alloy fitted with an aluminum head. The engine utilized a dual overhead camshaft (DOHC) valvetrain with 4 valves per cylinder for a total of 24 valves. The rotating assembly within the 3.0L Duramax engine was designed to be lightweight and durable by employing hypereutectic aluminum pistons and forged-steel connecting rods. A unique feature of the 3.0L Duramax engine design was the use of Rear Cam Drive, which means the camshaft gear was located on the back of the engine towards the firewall. The LM2 Duramax utilized a high-pressure common-rail fuel system. With two chain-driven pistons inside the injection pump, it was capable of producing up to 36,250 PSI of rail pressure. To handle that fuel rail pressure were solenoid style fuel injectors that utilized 9-hole nozzles that produced a precise fuel spray that led to less noise and smooth idling. Fitted to the 3.0 Duramax was a Garrett variable-geometry turbocharger that was liquid-cooled. A water-to-air intercooler was added and provided cooler and denser air for a cleaner and more efficient combustion process.
Most of the development and engineering work for the LM2 Duramax, as well as primary calibration took place in Turin, Italy. The engine is being produced at Flint Engine Operations. A test by Car and Driver showed 40 MPG is possible when hypermiling.
References
- "LM2 & LZ0 Duramax 3.0 Engines". XDP. 22 November 2024.
- "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.
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