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GM Ecotec engine

For other engines marketed as "Ecotec", see Ecotec.
GM Ecotec engine
Overview
Manufacturer General Motors
Also called
Production 2000–present
Combustion chamber
Configuration Straight-4
Cylinder block alloy Aluminum
Cylinder head alloy Aluminum
Valvetrain Double overhead camshafts
Combustion
Oil system Wet sump
Cooling system Water-cooled
Chronology
Predecessor

The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 2.0-and 2.5-litres. While these engines were based on the GM Family II engine, the architecture was substantially re-engineered for the new Ecotec application produced since 2000. This engine family replaced the GM Family II engine, the GM 122 engine, the Saab H engine, and the Quad 4 engine.

Generation I

Generation I
Overview
Production 2000–2012
Combustion chamber
Displacement
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Cylinder bore
  • Script error: No such module "convert".
Piston stroke
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Compression ratio
  • 8.8:1
  • 9.5:1
  • 10.0:1
Combustion
Fuel system
Fuel type
Dimensions
Length Script error: No such module "convert".
Width Script error: No such module "convert".
Height Script error: No such module "convert".
Dry weight Script error: No such module "convert".[6]

The 'Ecotec' name was adopted in 2000 for the new generation of Family II engines. The name was already used for the Opel GM Family II engine, Family 1 and Family 0 ranges. GM intends this new Ecotec to become its global 4-cylinder, and it has already fully replaced their OHV I4 line.

The Ecotec engine is a DOHC 4-valve design with an aluminum block and head (L850 for 86 mm bore applications, and L880 for 88 mm bore[citation needed]), designed for displacements from 1.8 to 2.4 L. Development began in 1994, by an international team of engineers and technicians from Opel's International Technical Development Center in Rüsselsheim, Germany, GM Powertrain in Pontiac, Michigan, and Saab in Södertälje, Sweden.[7] Much of the development work on this project was carried out by Lotus Engineering, Hethel, United Kingdom. The engine uses aluminum pistons and cast iron cylinder liners. Vibration is reduced with twin balance shafts.

The first engine in the Ecotec Gen I line-up was Ecotec 2.2 L61, introduced in 2000.

The current Ecotec line is manufactured in Tonawanda, New York,[7] Spring Hill, Tennessee, and Kaiserslautern, Germany. Over 30,000 were assembled in January, 2012.

2.0

LK9

File:Gm ecotec LK9 saab93.jpg
Saab B207 engine in a 2008 Saab 9-3 2.0T

This engine is also known as B207 when used by Saab and Z20NET by Opel for use in the Vectra C and Signum.

LK9 is a turbocharged 2.0 LScript error: No such module "convert".—version of the L850 (86 mm bore) series Ecotec utilizing an all-new reinforced sand cast aluminum cylinder head and upgraded internal components. The exhaust valves are liquid sodium-cooled. In Saab vehicles, this engines features Saab's Trionic 8 engine management system as well as a revised valve train. The timing chain and timing gears are also new. The reinforcements, turbocharging, intercooling, internals, dual overhead camshaft, and such were developed by GM Powertrain Sweden (Saab Automobile Powertrain). It features an Script error: No such module "convert". bore and stroke and a 9.5:1 compression ratio. Maximum power is Script error: No such module "convert". at 5300 rpm and Script error: No such module "convert". of torque at 2500 rpm. Maximum boost is Script error: No such module "convert"..

Saab 9-3, and Cadillac BLS Variations:

Model Years Power Torque Turbocharger
1.8t (B207E) 2002–2011 Script error: No such module "convert". @ 5500 rpm Script error: No such module "convert". @ 2000–3500 rpm Low-pressure (Garrett GT2052s)
2.0t (B207L) 2002–2011 Script error: No such module "convert". @ 5500 rpm Script error: No such module "convert". @ 2500–4000 rpm Mid-pressure (MHI TD04-11TK)
2.0T (B207R) 2002–2011 Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500–4000 rpm High-pressure (MHI TD04-14T)

LSJ

The LSJ is a supercharged version of the LK9 Ecotec 2.0 LScript error: No such module "convert".— with an Eaton M62 Roots-type supercharger and air-to-liquid intercooler. The LSJ shares many of its components with the LK9 such as: piston cooling jets, oil cooler, pistons, connecting rods, crankshaft, oil pan, sodium-filled exhaust valves and cylinder head.[8] It is rated at Script error: No such module "convert". at 5600 rpm and Script error: No such module "convert". at 4400 rpm with a compression ratio of 9.5:1 and a 6500 rpm redline. With the end of the Chevy Cobalt S/C SS and Saturn Ion Red Line, the LSJ was discontinued after 2007. In late 2005 Brammo Motorsports struck a deal with GM for the Supercharged 2.0 L Ecotec for their Ariel Atom. The engine came in various ratings from Script error: No such module "convert". to Script error: No such module "convert"..

The LSJ was on the Ward's 10 Best Engines list for 2006.

This engine is used in:

Year(s) Model Power Torque Dyno chart
2004–2007 Saturn Ion Red Line Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4400 rpm link
2005–2007 Chevrolet Cobalt SS Supercharged Coupe Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4400 rpm link

2.2

L61

File:2003 Pontiac Sunfire Ecotec.JPG
2003 Pontiac Sunfire Ecotec engine
File:2003CavalierL61Engine.jpg
Ecotec L61 installed in a 2003 Chevrolet Cavalier

This engine is also known as a Z22SE in other countries such as The United Kingdom and Australia.

The basic Family II architecture was substantially re-engineered in 2000 to become the Ecotec Gen I. Unlike its notably harsh predecessor, the engine was designed for smoothness. Dual in-block balance shafts were integral to the design, the power-steering pump was mounted directly to the cylinder head and driven by the intake camshaft, the water-pump housing was cast into the block, and the A/C compressor and alternator were mounted directly on the block without brackets. The oil filter housing was cast into the block with a removable cover and replaceable paper element. It did not use an EGR valve. The Ecotec line is manufactured in Tonawanda, New York and Kaiserslautern, Germany, and was also manufactured for Saturn in Spring Hill, Tennessee until Saturn's discontinuation. In North America this engine replaced both the Quad-4 and the GM 122 engines and first appeared in the 2000 Saturn L-Series.[7]

The L61 is a 2.2 L—Script error: No such module "convert".—version with a lost-foam cast aluminum cylinder head and block; it features an Script error: No such module "convert". bore and Script error: No such module "convert". stroke [7] and either a 9.5:1 compression ratio or a 10.0:1. The engine is Script error: No such module "convert". in length, Script error: No such module "convert".in width, Script error: No such module "convert". in height and approximately Script error: No such module "convert"..[7]

The Ecotec 2.2, model L61 first appeared in the 2000 Saturn LS1; the L61-powered Saturn Ion also replaced the Saturn-powered Saturn S-Series.

There are a few variations to the standard L61. The 2003 Saturn L-Series has a high output version with higher (10:1) compression and more aggressive camshaft. The 2004–2008 Chevrolet Malibu uses a version with electronic throttle control and a special unitized exhaust manifold and catalytic converter. The Malibu and Saturn versions also use return-less fuel injection. The 2002 Saturn VUE was the first North American variant of the L61 to be equipped with electronic throttle control, whereas other applications did not arise until 2005 in the Saturn ION and Chevrolet Cobalt. For 2007, introduced an updated version of the L61 based on the Gen II design.

The supercharger and inlet manifold from the 2.0 Ecotec LSJ engine can be purchased as an official kit from GM and along with modified software in the ECM, can create a 2.2 supercharged version of this engine.

The L61 was used in the following cars:

Year(s) Model Power Torque Compression ratio Dyno chart
2002 Chevrolet Cavalier Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4400 rpm 10.0:1
2003–2005 Script error: No such module "convert". @ 4000 rpm link
2005–2006 Chevrolet Cobalt Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1 link
2006 Chevrolet HHR Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1
2004 Chevrolet Malibu Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1
2005–2006 Script error: No such module "convert". @ 5600 rpm link
2002–2004 Oldsmobile Alero Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1
2002 Pontiac Grand Am Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4400 rpm 10.0:1
2003–2005 Script error: No such module "convert". @ 4000 rpm link
2002 Pontiac Sunfire Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4400 rpm 10.0:1
2003–2005 Script error: No such module "convert". @ 4000 rpm link
2005–2006 Pontiac Pursuit/G5 Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1
2000 Saturn L-Series Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4400 rpm 9.5:1
2001–2003 Script error: No such module "convert". @ 5200 rpm Script error: No such module "convert". @ 4400 rpm
2004 Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm
2003–2006 Saturn Ion Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4400 rpm 10.0:1 link
2002–2005 Saturn Vue Script error: No such module "convert". @ 5400 rpm Script error: No such module "convert". @ 4000 rpm 10.0:1 link
2006 Script error: No such module "convert". @ 5600 rpm
2007 Script error: No such module "convert". @ 5600 rpm
2001–2005 Opel Speedster[7] Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4000 rpm
2000–2003 Opel Astra[7] Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4000 rpm
2001–2002 Opel/Vauxhall Vectra[7] Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4000 rpm
2000–2003 Opel/Vauxhall Zafira[7] Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4000 rpm
2001–2006 Holden Astra (TS) Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4000 rpm

This engine also powered the Japanese-market Subaru Traviq, a badge-engineered Opel Zafira A.[9]

Following the GM-Fiat agreement, the 2.2 L engine is also used in

Z22YH

A direct injection version of the 2.2 L (2198 cc) Ecotec features Script error: No such module "convert". of power @5600 rpm and Script error: No such module "convert". of torque @ 3800 rpm with a compression ratio of 12.0:1, and has been available in:

L42

The Ecotec 2.2, model L42 is the CNG version of the Ecotec 2.2. It delivers Script error: No such module "convert". and Script error: No such module "convert".. Applications:

Generation II

Generation II
Overview
Production 2006–present
Combustion chamber
Displacement
  • Script error: No such module "convert".
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Cylinder bore
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Piston stroke
  • Script error: No such module "convert".
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Compression ratio
  • 9.2:1
  • 10.0:1
  • 10.4:1
  • 11.2:1
  • 11.4:1
Combustion
Fuel system
Fuel type

2.0 LNF

A turbocharged direct injected (redubbed Spark Ignition Direct Injection) Ecotec was introduced in the 2007 Pontiac Solstice GXP and Saturn Sky Red Line. In these applications, the engine is mounted longitudinally. Displacement is 2.0 L—Script error: No such module "convert".—with a square Script error: No such module "convert". bore and stroke. Compression is 9.2:1 and maximum boost is 1.4 bar (20.0 psi), delivering Script error: No such module "convert". at 5300 rpm and Script error: No such module "convert". of torque from 2500 to 5250 rpm. Engine redline is at 6300 rpm and premium fuel is recommended. The sodium filled exhaust valves were based on technology developed for the Corvette V8 powertrains. The sodium fuses and becomes a liquid at idle, which improves conductivity and draws heat away from the valve face and valve guide towards the stem to be cooled by the engine oil circulating in this area. The camshaft-driven direct injection systems pressurizes the fuel to 31 bar (450 psi) at idle, and up to 155 bar (2,250 psi) at wide-open throttle. The "Gen II" block is similar to the 2.4 L and also features VVT technology. The Gen II block was developed using data from racing programs and computer simulations. The bore walls and bulkheads were strengthened with a weight increase of 1 kg (2.5 pounds). The coolant jackets were expanded to improve heat transfer, resulting in a coolant capacity increase of 0.5 liters.

In December 2008, GM released a Turbo Upgrade Kit for the LNF engine which increases horsepower to Script error: No such module "convert". and torque to up to Script error: No such module "convert"., depending on the model. The kit retails for $650 and includes remapped engine calibration and upgraded MAP sensors. The kit is covered by the cars' existing GM warranties.[10]

This was the final Stage 2 performance tune the Ecotec family, to date. With the demise of the GM Performance Division, performance tunes like this have been relegated to the aftermarket sector. This despite newer engines being more durable, and tuned to lower horsepower levels in numerous sport-car applications.

Unique LNF features[11] include:

This engine is used in:

Year(s) Model Power Torque
2007–2010 Opel GT Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2007–2010 Pontiac Solstice GXP Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2007–2010 Saturn Sky Red Line Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2008–2010 Chevrolet HHR SS Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2008–2010 Chevrolet Cobalt SS Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2009 Elfin T5 Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2012 Fisker Karma Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm

LDK

An updated variant of the LNF (also with 9.2:1 compression ratio). This engine is also known as A20NFT and A20NHT by GM Powertrain Europe.

This engine is used in:

Year(s) Model Power Torque
2009 Opel Insignia Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500 rpm
2009–2010 Buick Regal Turbo Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500 rpm
2010–2013 Buick Regal GS (Chinese Market) Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500 rpm
2009–2010 Buick Regal Turbo (Hirsch Performance) Script error: No such module "convert". @ 5400 rpm Script error: No such module "convert". @ 3000–4000 rpm
2010–2013 Buick Regal GS (Hirsch Performance) Script error: No such module "convert". @ 5400 rpm Script error: No such module "convert". @ 3000–4000 rpm
2010–2012 Saab 9-5 Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500 rpm
2011, 2013– Saab 9-3 (NEVS) Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2500 rpm
2011 Opel Insignia 4x4 Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2400–3600 rpm
2012 Opel Astra J OPC Script error: No such module "convert". @ 5500 rpm Script error: No such module "convert". @ 2500–4500 rpm
2014– Buick Regal GS (Chinese Market) Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000–5000 rpm
2014– Buick Regal GS (Hirsch Performance) Script error: No such module "convert". @ 5400 rpm Script error: No such module "convert". @ 3000–4000 rpm

LHU

LHU adds E85 flex-fuel capability to the LDK.

Year(s) Model Power Torque Dyno Chart
2011–2013 Buick Regal Turbo Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2011–2012 Saab 9-5 Turbo4 Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm
2012–2013 Buick Regal GS Script error: No such module "convert".[12] Script error: No such module "convert". @ 2400 rpm
2013–present Buick Verano Turbo[13] Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 2000 rpm link

2.2

L61

For 2007, the L61 received a multitude of changes, that originated from the LE5. It switched to the higher-strength Gen II block and received a revised cylinder head (enlarged exhaust ports) and camshaft design (increased exhaust valve duration). The engine also switched from wasted spark ignition to individual coil-on-plug ignition, this forced the cam cover to be redesigned. It was also switched to an E37 engine controller with new crank and cam sensors (replacing timing sensor previously found in ignition cassette). These changes increase horsepower slightly and allow the engine to meet PZEV standards.[14] Compression ratio is 10.0:1

The L61 was used in the following cars:

Year(s) Model Power Torque
2007–2008 Chevrolet Cobalt Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4200 rpm
2007 Chevrolet HHR Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4000 rpm
2008 Script error: No such module "convert". @ 4200 rpm
2007–2008 Chevrolet Malibu Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4200 rpm
2007–2008 Pontiac Pursuit/G5 Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4200 rpm
2007 Saturn Ion Script error: No such module "convert". @ 5600 rpm Script error: No such module "convert". @ 4200 rpm

LAP

The LAP is a 2.2 L—Script error: No such module "convert".—version of the Ecotec, based on the Gen II block with cylinder head improvements, new camshaft design, E37 engine control module, 58X crankshaft reluctor ring, digital crank and cam sensors, individual coil-on-plug ignition, vented starter solenoid, new MAP sensor, new intake manifold seals, new oil filter element, a 32-bit computer, and improved emissions performance.

Bore and stroke are Script error: No such module "convert". and Script error: No such module "convert"., the same as the 2.2 L L61. Compression ratio is 10.0:1. Major features that set it apart from the 2.2 L L61 are variable-valve-timing and other cylinder head improvements from the 2.4 L LE5.

Year(s) Model Power Torque
2009–2010 Chevrolet Cobalt Script error: No such module "convert". @ 6100 rpm Script error: No such module "convert". @ 4900 rpm
2009 Pontiac G5 Script error: No such module "convert". @ 6100 rpm Script error: No such module "convert". @ 4900 rpm

LE8

The LE8 is an E85 compatible 2.2 L—Script error: No such module "convert".—version of the LAP Ecotec. Bore and stroke remain the same Script error: No such module "convert". and Script error: No such module "convert".. Compression ratio is 10.0:1 and the engine can run on both regular unleaded gasoline or E85.

Year(s) Model Power Torque
2009–2011 Chevrolet HHR Script error: No such module "convert". @ 6100 rpm (gasoline) Script error: No such module "convert". @ 4800 rpm (gasoline)
Script error: No such module "convert". @ 6000 rpm (E85) Script error: No such module "convert". @ 4600 rpm (E85)

2.4

LE5

The LE5 is a larger 2.4 L—Script error: No such module "convert".—version of the Ecotec. Both the Script error: No such module "convert". bore and Script error: No such module "convert". stroke are larger, and Variable Valve Timing on the intake and exhaust improve low-end torque. Compression is 10.4:1. Power is 164–177 hp (123–132 kW) and torque is 159–170 lb·ft (215–230 N·m). The engine uses a reinforced "Gen II" block.

Year(s) Model Power Torque
2006–2007 Chevrolet Cobalt SS Script error: No such module "convert". @ 6200 rpm Script error: No such module "convert". @ 4800 rpm
2008 Chevrolet Cobalt Sport Script error: No such module "convert". @ 6200 rpm Script error: No such module "convert". @ 4800 rpm
2006–2008 Chevrolet HHR Script error: No such module "convert". Script error: No such module "convert".
2006–2008 Pontiac G5/Pursuit Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4500 rpm
2006–2009 Pontiac G6 Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4500 rpm
2006–2009 Pontiac Solstice Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4500 rpm
2006–2009 Saturn Sky Script error: No such module "convert". @ 5800 rpm Script error: No such module "convert". @ 4800 rpm
2006–2007 Saturn Ion Script error: No such module "convert". @ 6200 rpm Script error: No such module "convert". @ 4800 rpm
2008–2009 Saturn Aura Script error: No such module "convert". Script error: No such module "convert".
2008–2012 Chevrolet Malibu Script error: No such module "convert". Script error: No such module "convert".
2008–2009 Saturn Vue Script error: No such module "convert". @ 6200 rpm Script error: No such module "convert". @ 5100 rpm

The LE5 is also used in the following overseas models:

The LE5 or a close variant is also used in the Polaris Slingshot (announced July 27, 2014), coupled with a 5-speed manual transmission and a final belt drive. The Slingshot is a three-wheeled side-by-side street vehicle, classed as a motorcycle.[15]

LAT

The LAT is the designation used for the 2.4 L LE5 when used in GM's mild hybrid vehicles.

Year(s) Model Power Torque
2007–2009 Saturn Aura Green Line Hybrid Script error: No such module "convert". @ 6400 rpm Script error: No such module "convert". @ 5000 rpm
2007 Saturn Vue Green Line Hybrid Script error: No such module "convert". @ 6600 rpm Script error: No such module "convert". @ 4200 rpm
2008 Saturn Vue Green Line Hybrid Script error: No such module "convert". @ 6500 rpm Script error: No such module "convert". @ 4500 rpm
2008–2009 Chevrolet Malibu Hybrid Script error: No such module "convert". @ 6400 rpm Script error: No such module "convert". @ 5000 rpm

LE9

The LE9 is an E85 compatible version of the 2.4 L—Script error: No such module "convert".LE5 Ecotec. Bore and stroke are Script error: No such module "convert". and Script error: No such module "convert". and has a compression ratio of 10.4:1, the same as the LE5.

Year(s) Model Power Torque
2009–2011 Chevrolet HHR Script error: No such module "convert". @ 5800 rpm (gasoline) Script error: No such module "convert". @ 4500 rpm (gasoline)
Script error: No such module "convert". @ 5800 rpm (E85) Script error: No such module "convert". @ 5000 rpm (E85)
2010–2012 Chevrolet Malibu (fleet only) Script error: No such module "convert". @ 5800 rpm (E85) Script error: No such module "convert". @ 5000 rpm (E85)

LAF

The LAF is a direct injected 2.4 L. It uses technology based on GM’s other four-cylinder direct injection applications, but with unique features designed for its specific application. This includes an 11.2:1 compression ratio that helps build power, slightly dished pistons that increase combustion efficiency and injectors with an application-specific flow rate.[16] [17]

Year(s) Model Power Torque
2010–2011 Chevrolet Equinox
GMC Terrain
Script error: No such module "convert". @ 6700 rpm (gasoline) Script error: No such module "convert". @ 4900 rpm (gasoline)
2010–2011 Buick LaCrosse Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm
2011 Buick Regal Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm
2011– Chevrolet Captiva Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm

LEA

The LEA is an E85 compatible variant of the LAF. Bore, stroke, and compression ratio all remain the same.

Year(s) Model Power Torque Dyno Chart
2012–2013 Buick Regal Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
2012–present Buick Verano[18] Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
2012–present Chevrolet Captiva Sport Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
2012–present Chevrolet Equinox
GMC Terrain
Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
link

LUK

The LUK is similar to the LAF, but adds the eAssist mild-hybrid system.

Year(s) Model Power Torque Dyno Chart
2012–present Buick LaCrosse Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
2012–present Buick Regal Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link
2013–2014 Chevrolet Malibu ECO Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm
2014 Chevrolet Impala Script error: No such module "convert". @ 6700 rpm Script error: No such module "convert". @ 4900 rpm link

Generation III

Generation III
Overview
Production 2013–present
Combustion chamber
Displacement
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Cylinder bore
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Piston stroke
  • Script error: No such module "convert".
  • Script error: No such module "convert".
Compression ratio
  • 9.5:1
  • 11.3:1
Combustion
Fuel system Spark Ignition Direct Injection (SIDI)
Fuel type

2.0

LTG

A 2.0 L (1998 cc) turbocharged direct injection version of the gen III Ecotec will be available in 2013 Cadillac ATS and Chevrolet Malibu.This engine is also available in Cadillac XTS in Chinese market. Bore and stroke are both Script error: No such module "convert"., compression is 9.5:1. The engine uses twin-scroll turbocharger with electronically controlled wastegate/bypass valve, air-to-air intercooler, stainless steel dual-scroll (1–4, 2–3) exhaust manifold designed to withstand Script error: No such module "convert". turbine temperature, and rotacast aluminum alloy (A356T6) cylinder head with sodium-filled exhaust valves.[19]

Year(s) Model Power Torque Dyno Chart
2014 Buick Regal Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 3000–4000 rpm
(2500–4000 rpm for GS
link
GS link
2013-2014 Cadillac ATS Script error: No such module "convert". @ 5500 rpm Script error: No such module "convert". @ 1700–5500 rpm link
2015 Script error: No such module "convert". @ 3000–4600 rpm
2014 Cadillac CTS Script error: No such module "convert". @ 5500 rpm Script error: No such module "convert". @ 3000–4500 rpm link
2013 Chevrolet Malibu Script error: No such module "convert". @ 5300 rpm Script error: No such module "convert". @ 1700–5500 rpm
2014 Script error: No such module "convert". @ 5200 rpm link
2013–present Opel Insignia Script error: No such module "convert". @ 4500 rpm Script error: No such module "convert". @ 2000–4500 rpm

2.5

LCV

First appearing in the 2013 Chevrolet Malibu and 2013 Cadillac ATS, the 2.5 L Gen III block has been reworked to reduce engine noise and vibrations, while improving fuel economy and low-end torque.[19][20][21] LCV is scheduled to replace the direct-injected 2.4 L throughout North American GM products within a year.[22] Engine production started in April 2012 at GM's Tonawanda, New York plant.

The new combustion system developed with GM's proprietary computational fluid dynamics (CFD) analysis software features a higher compression ratio which helps improve fuel efficiency and has improved knock resistance. The engine features dual overhead camshafts with continuously variable valve timing and increased-authority cam phasing (increased phase rotation angle), a high-pressure returnless direct-injection fuel system with camshaft-driven fuel pump delivering 750 psi at idle and 2250 psi at full load, higher-flowing intake and exhaust ports in the cylinder head, electronic throttle control and pistons with jet-spray oil cooling. The engine redline is 7000 rpm.

The balance shafts are relocated from the cylinder block to oil pan module. The two-piece steel-aluminum oil pan features in-pan integrated oil-pump assembly driven by the balance shaft with a shorter inverted-tooth chain. Other improvements include inverted-tooth chain driving the camshaft, forged steel crankshaft, cast aluminum bedplate with main bearing cap inserts made of iron, high-pressure fuel rail with rubber-isolated assembly, acoustically shielded plastic cover for the intake manifold, and structurally enhanced aluminum camshaft cover and front cover. These improvements helped reduce noise intensity by 40% compared to the 2.4 L engine and change the noise signature into a higher frequency above 2,000 Hz. The engine also uses a variable-displacement oil pump and an actively controlled thermostat. Direct injection reduces emissions by 25%, while continuous cam phasing eliminates the need for an EGR system.

Displacement for the 2.5 L engine is Script error: No such module "convert". with an Script error: No such module "convert". bore and Script error: No such module "convert". stroke. Compression ratio is 11.3:1.

Year(s) Model Power Torque Dyno Chart
2013–present Cadillac ATS Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4400 rpm link
2013 Chevrolet Malibu Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4400 rpm
2015–present Chevrolet Colorado Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4400 rpm link
GMC Canyon link
2016 Chevrolet Malibu Limited [23]

LKW

Same as the LCV but features Intake Valve Lift Control (IVLC) system provides two-stage variable valve lift in addition to continuous variable timing. Continuously commanded by engine control unit, the valve rocker arm switches between high-lift and low-lift profiles on the camshaft, actuated by an oil control valve through a two-feed stationary hydraulic lash adjuster, allowing for either 4.0 or 10.5 mm lift.[24] In the Chevrolet Malibu, it also features a start-stop system.

Year(s) Model Power Torque Dyno Chart
2014–present Chevrolet Impala Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4400 rpm link
2014–2015 Chevrolet Malibu Script error: No such module "convert". @ 6300 rpm Script error: No such module "convert". @ 4400 rpm link

HCCI

At Tech Show Torino 2008, GM Powertrain Europe announced the ignition-less HCCI (Homogeneous Charge Compression Ignition) mode of the direct injection version of 2.2 L engine.[25] HCCI version is equipped with two-step adjustable valve lift with variable cam phasing and advanced ECU with cylinder pressure sensors, uses lean burn cycle similar to that of a diesel engine, and is claimed to further reduce fuel consumption by 15%.[26]

See also

References

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  2. ^ http://www.gmpowertrain.com/PowertrainFiles/Engine/Stories/10_LE8_n.doc. Retrieved 29 July 2014.  Missing or empty |title= (help)
  3. ^ "GM engine family goes global". Wards Auto. December 1, 1995. Retrieved 13 August 2014. 
  4. ^ "L850 MUST SATISFY A WIDE RANGE OF TASTES". autonews.com. August 2, 1999. Retrieved 13 August 2014. 
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  6. ^ http://archives.media.gm.com/division/2005_prodinfo/powertrain/whats%20new/Ecotec/_2005%20LSJ.doc. Retrieved 16 April 2014.  Missing or empty |title= (help)
  7. ^ a b c d e f g h i "GM's Ecotec 2.2-Liter 4-Cylinder Engine Delivers". The Auto Channel. Pontiac, Michigan. Retrieved 15 March 2013. 
  8. ^ http://archives.media.gm.com/division/2005_prodinfo/powertrain/index.html. Retrieved 16 April 2014.  Missing or empty |title= (help)
  9. ^ "検索結果: 2001年 スバル トラヴィック Sパッケージ" [Great Car Pavilion: 2001 Subaru Traviq S-package]. Gazoo.com (in Japanese). Toyota Motor Corporation. Retrieved 2012-05-22. 
  10. ^ Chris Shunk RSS feed. "GM releases turbo upgrade kit for Solstice GXP, Sky Redline and HHR SS". Autoblog.com. Retrieved 2012-01-24. 
  11. ^ "Big Power, Small Package". AutoWeek. Retrieved April 4, 2006. 
  12. ^ "2012 Buick Regal GS rated at 270 hp". Autoweek. 2011-06-15. Retrieved 2012-01-24. 
  13. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Jun/0611_turbov.html
  14. ^ "2008 Ecotec 2.2L I4 ( L61 )". Retrieved 30 July 2014. 
  15. ^ http://www.polaris.com/en-us/slingshot
  16. ^ "NAIAS 09: 2010 ECOTEC 2.4l SIDI". Gminsidenews.com. Retrieved 2012-01-24. 
  17. ^ Roth, Dan (2008-12-17). "DI FTW: GM unveils new direct-injection 2.4 L EcoTec and 3.0 L V6". autoblog.com. Retrieved 2008-12-17. 
  18. ^ "Buick Introduces The All-New 2012 Verano". Media.gm.com. 2011-01-06. Retrieved 2012-01-24. 
  19. ^ a b http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0920_malibu_turbo_eng.html
  20. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_ecotec_25_efficient
  21. ^ http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_malibu_noise_vibration
  22. ^ http://blog.caranddriver.com/gm-to-replace-2-4-liter-fours-with-2-5-liters-across-the-range/
  23. ^ http://www.gmfleetorderguide.com/NASApp/domestic/printbook.jsp?year=2016&regionID=1&lang=1&divisionID=3&vehicleID=17805
  24. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0917_intakevalve.html
  25. ^ General Motors Europe (May 2008). "A Look Into the Future of Engines and Transmissions". CONTROLLED AUTO-IGNITION HCCI. 
  26. ^ "HOMOGENEOUS CHARGE COMPRESSION IGNITION – HCCI". media.gm.com. Retrieved 30 July 2014. 
  • Larry Webster. "Getting Rid of the H-Word". Car and Driver (May 2000): 93.