GM Ecotec engine


The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 1.4 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. It is manufactured in multiple locations, to include Spring Hill Manufacturing, in Spring Hill, Tennessee.


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Contents





  • 1 Generation I

    • 1.1 2.0

      • 1.1.1 LK9


      • 1.1.2 LSJ



    • 1.2 2.2

      • 1.2.1 L61


      • 1.2.2 Z22YH


      • 1.2.3 L42




  • 2 Generation II

    • 2.1 2.0 LNF (Z20NHH Opel)


    • 2.2 2.0 LDK (A20NHT Opel)


    • 2.3 LHU (A20NFT Opel)


    • 2.4 2.2

      • 2.4.1 L61


      • 2.4.2 LAP


      • 2.4.3 LE8



    • 2.5 2.4

      • 2.5.1 LE5


      • 2.5.2 LAT


      • 2.5.3 LE9


      • 2.5.4 LAF


      • 2.5.5 LEA


      • 2.5.6 LUK




  • 3 Generation III

    • 3.1 2.0

      • 3.1.1 LTG (B20NHT)


      • 3.1.2 LSY



    • 3.2 2.5

      • 3.2.1 LCV


      • 3.2.2 LKW




  • 4 HCCI


  • 5 See also


  • 6 References





Generation I
























Generation I
Overview
Production1994–2012
Layout
Displacement
  • 1,998 cc (121.9 cu in)

  • 2,198 cc (134.1 cu in)

Cylinder bore
  • 86 mm (3.4 in)
Piston stroke
  • 86 mm (3.4 in)

  • 94.6 mm (3.72 in)

Compression ratio
  • 8.8:1

  • 9.5:1

  • 10.0:1

Combustion

Fuel system
  • Sequential multi-point fuel injection

  • Gasoline direct injection

Fuel type
  • Gasoline

  • CNG

  • E85

Dimensions
Length665 mm (26.2 in)
Width642 mm (25.3 in)
Height655 mm (25.8 in)
Dry weight139–150 kg (306–331 lb)[1]

The 'Ecotec' name was adopted in 1994 for the new generation of Family II engines (2000 in North America) . 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 a lost foam cast 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.[2] 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,.[2]



2.0



LK9




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 L— 1,998 cc (121.9 cu in)—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. All vehicles using this engine feature Saab's Trionic 8 (T8) engine management system as well as a revised valve train. The timing chain and timing gears are also new, along with Saab's Direct Ignition system. The reinforcements, turbocharging, intercooling, internals, dual overhead camshaft, and such were developed by GM Powertrain Sweden (Saab Automobile Powertrain). It features an 86 millimetres (3.4 in) bore and stroke and a 9.5:1 compression ratio. Maximum power is 210 horsepower (160 kW) at 5300 rpm and 221 ft⋅lb (300 N⋅m) of torque at 2500 rpm. Maximum boost is 12.3 psi (0.85 bar).


  • 2003–2012 Saab 9-3 - B207E, B207L, B207R

  • 2003–2008 Opel Vectra - Z20NET (rebadged B207L)

  • 2003–2008 Opel Signum - Z20NET (rebadged B207L)

  • 2006–2010 Cadillac BLS - B207L, B207R































Model
Years
Power
Torque
Turbocharger
Boost Pressure
1.8t (B207E)
2002–2011110 kW (150 PS; 148 hp) @ 5500 rpm240 N⋅m (180 ft⋅lb) @ 2000–3500 rpmLow-pressure (Garrett GT2052s)7.3 psi (0.50 bar)
2.0t (B207L)
2002–2006129 kW (175 PS; 173 hp) @ 5500 rpm265 N⋅m (195 ft⋅lb) @ 2500–4000 rpmMid-pressure (Garrett GT2052s)8.7 psi (0.60 bar)
2.0t (B207L)
2006–2011129 kW (175 PS; 173 hp) @ 5500 rpm265 N⋅m (195 ft⋅lb) @ 2500–4000 rpmMid-pressure (MHI TD04-11TK)8.7 psi (0.60 bar)
2.0T (B207R)
2002–2011156.5 kW (213 PS; 210 hp) @ 5300 rpm300 N⋅m (220 ft⋅lb) @ 2500–4000 rpmHigh-pressure (MHI TD04-14T)12.3 psi (0.85 bar)


LSJ




Ecotec LSJ engine in a 2006 Saturn Ion Red Line


The LSJ is a supercharged version of the LK9 Ecotec 2.0 L— 1,998 cc (121.9 cu in)— 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.[3] It is rated at 205 hp (153 kW) at 5600 rpm and 200 ft⋅lb (271 N⋅m) 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 205 hp (153 kW) to 300 hp (220 kW).


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
205 hp (153 kW) @ 5600 rpm
200 ft⋅lb (271 N⋅m) @ 4400 rpm

link
2005–2007

Chevrolet Cobalt SS Supercharged Coupe
205 hp (153 kW) @ 5600 rpm
200 ft⋅lb (271 N⋅m) @ 4400 rpm

link


2.2



L61




Ecotec L61 engine in a Chevrolet Classic (Malibu)




2003 Pontiac Sunfire Ecotec engine




Ecotec L61 installed in a 2003 Chevrolet Cavalier


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


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.[2]


The L61 is a 2.2 L—2,198 cc (134.1 cu in)—version with a lost-foam cast aluminum cylinder head and block; it features an 86 millimetres (3.4 in) bore and 94.6 millimetres (3.72 in) stroke [2] and either a 9.5:1 compression ratio or a 10.0:1. The engine is 665 millimetres (26.2 in) in length, 642 millimetres (25.3 in) in width, 655 millimetres (25.8 in) in height and approximately 139 kilograms (306 lb).[2]


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
140 hp (100 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4400 rpm
10.0:1

2003–2005
150 ft⋅lb (203 N⋅m) @ 4000 rpm

link
2005–2006

Chevrolet Cobalt
145 hp (108 kW) @ 5600 rpm
155 ft⋅lb (210 N⋅m) @ 4000 rpm
10.0:1

link
2006

Chevrolet HHR
143 hp (107 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm
10.0:1

2004

Chevrolet Malibu
145 hp (108 kW) @ 5600 rpm
155 ft⋅lb (210 N⋅m) @ 4000 rpm
10.0:1

2005–2006
144 hp (107 kW) @ 5600 rpm

link
2002–2004

Oldsmobile Alero
140 hp (100 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm
10.0:1

2002

Pontiac Grand Am
140 hp (100 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4400 rpm
10.0:1

2003–2005
150 ft⋅lb (203 N⋅m) @ 4000 rpm

link
2002

Pontiac Sunfire
140 hp (100 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4400 rpm
10.0:1

2003–2005
150 ft⋅lb (203 N⋅m) @ 4000 rpm

link
2005–2006

Pontiac Pursuit/G5
145 hp (108 kW) @ 5600 rpm
155 ft⋅lb (210 N⋅m) @ 4000 rpm
10.0:1
2000

Saturn L-Series
137 hp (102 kW) @ 5800 rpm
135 ft⋅lb (183 N⋅m) @ 4400 rpm
9.5:1

2001–2003
135 hp (101 kW) @ 5200 rpm
142 ft⋅lb (193 N⋅m) @ 4400 rpm

2004
140 hp (100 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm

2003–2006

Saturn Ion
140 hp (100 kW) @ 5800 rpm
145 ft⋅lb (197 N⋅m) @ 4400 rpm
10.0:1

link
2002–2005

Saturn Vue
143 hp (107 kW) @ 5400 rpm
152 ft⋅lb (206 N⋅m) @ 4000 rpm
10.0:1

link
2006
143 hp (107 kW) @ 5600 rpm

2007
144 hp (107 kW) @ 5600 rpm

2001–2005

Opel Speedster / Vauxhall VX220[2]
147 hp (110 kW) @ 5800 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm


2000–2003

Opel / Vauxhall Astra[2]
147 hp (110 kW) @ 5800 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm


2001–2002

Opel / Vauxhall Vectra[2]
147 hp (110 kW) @ 5800 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm


2000–2003

Opel / Vauxhall Zafira[2]
147 hp (110 kW) @ 5800 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm


2001–2006

Holden Astra (TS)
147 hp (110 kW) @ 5800 rpm
150 ft⋅lb (203 N⋅m) @ 4000 rpm


This engine also powered the Japanese-market Subaru Traviq, a badge-engineered Opel Zafira A.[4]


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



  • Fiat Croma unmodified


  • Alfa Romeo 159 heavy modified with Gasoline direct injection


Z22YH



A direct injection version of the 2.2 L (2198 cc) Ecotec features 114 kW (153 hp) of power @5600 rpm and 220 N⋅m (160 ft⋅lbf) of torque @ 3800 rpm with a compression ratio of 12.0:1, and has been available in:


  • 2003 Opel/Vauxhall Vectra

  • 2003 Opel/Vauxhall Signum

  • 2005 Opel/Vauxhall Zafira

  • 2006–2009 Holden Astra (Australia and New Zealand only)


L42


The Ecotec 2.2, model L42 is the CNG version of the Ecotec 2.2. It delivers 129 hp (96 kW) and 129 ft⋅lb (175 N⋅m).
Applications:


  • 2003–2004 Chevrolet Cavalier


Generation II
















Generation II
Overview
Production2006–present
Layout
Displacement
  • 1,998 cc (121.9 cu in)

  • 2,198 cc (134.1 cu in)

  • 2,384 cc (145.5 cu in)

Cylinder bore
  • 86 mm (3.4 in)

  • 88 mm (3.5 in)

Piston stroke
  • 86 mm (3.4 in)

  • 94.6 mm (3.72 in)

  • 98 mm (3.9 in)

Compression ratio
  • 9.2:1

  • 10.0:1

  • 10.4:1

  • 11.2:1

  • 11.4:1

Combustion

Fuel system
  • Sequential multi-point fuel injection

  • Gasoline direct injection

Fuel type
  • Gasoline

  • E85


2.0 LNF (Z20NHH Opel)




Ecotec LNF in a Pontiac Solstice


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—1,998 cc (121.9 cu in)—with a square 86 millimetres (3.4 in) bore and stroke. Compression is 9.2:1 and maximum boost is 1.4 bar (20.0 psi), delivering 260 hp (190 kW) at 5300 rpm and 260 ft⋅lb (350 N⋅m) 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 290 hp (220 kW) and torque to up to 340 ft⋅lb (460 N⋅m), 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.[5]


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[6] include:


  • a twin-scroll turbocharger

  • cam-driven high-pressure gasoline direct injection fuel system

  • dual camshaft continuously variable valve timing


  • sodium-filled stainless steel Inconel exhaust valves

  • low-friction cast aluminum pistons with oil squirters

  • forged steel crankshaft

  • forged steel connecting rods

  • cast stainless steel exhaust manifold

  • foam casted gen2 block

  • bosch injectors 0 261 500 055 or slightly larger 0 261 500 089 injectors in 2010 models

This engine is used in:


































Year(s)
Model
Power
Torque
2007–2010

Opel GT
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm
2007–2010

Pontiac Solstice GXP
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm
2007–2010

Saturn Sky Red Line
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm
2008–2010

Chevrolet HHR SS
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm
2008–2010

Chevrolet Cobalt SS
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm
2009

Elfin T5
264 hp (197 kW) @ 5300 rpm
259 ft⋅lb (351 N⋅m) @ 2000 rpm
2012

Fisker Karma
260 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm


2.0 LDK (A20NHT Opel)



An updated variant of the LNF (also with 9.2:1 compression ratio) was released in 2008, meeting the Euro 5 emission standard. This engine is also known as A20NHT by GM Powertrain Europe.


Unique LDK features include:


  • a twin-scroll turbocharger

  • cam-driven high-pressure gasoline direct injection fuel system

  • dual camshaft continuously variable valve timing


  • sodium-filled stainless steel Inconel exhaust valves

  • low-friction cast aluminum pistons with oil squirters

  • forged steel crankshaft

  • cast stainless steel exhaust manifold

  • foam casted gen2 block

  • bosch injectors 0 261 500 055

This engine is used in:


























































Year(s)
Model
Power
Torque
2009–2017

Opel Insignia
162 kW (220 PS; 217 hp) @ 5300 rpm
350 N⋅m (258 ft⋅lb) @ 2500 rpm
2009–2010

Buick Regal Turbo
162 kW (220 PS; 217 hp) @ 5300 rpm
350 N⋅m (258 ft⋅lb) @ 2500 rpm
2010–2013

Buick Regal GS (China Market)
162 kW (220 PS; 217 hp) @ 5300 rpm
350 N⋅m (258 ft⋅lb) @ 2500 rpm
2009–2010

Buick Regal Turbo (Hirsch Performance)
192 kW (261 PS; 257 hp) @ 5400 rpm
400 N⋅m (295 ft⋅lb) @ 3000–4000 rpm
2010–2013

Buick Regal GS (Hirsch Performance)
192 kW (261 PS; 257 hp) @ 5400 rpm
400 N⋅m (300 ft⋅lb) @ 3000–4000 rpm
2010–2012

Saab 9-5
162 kW (220 PS; 217 hp) @ 5300 rpm
350 N⋅m (258 ft⋅lb) @ 2500 rpm
2011, 2013–

Saab 9-3 (NEVS)
162 kW (220 PS; 217 hp) @ 5300 rpm
350 N⋅m (258 ft⋅lb) @ 2500 rpm
2011–2013

Cadillac SLS (China)
193 kW (259 hp) @ 5300 rpm
360 N⋅m (266 ft⋅lb) @ 2000–5000 rpm
2011–2017

Opel Insignia 4x4
184 kW (250 PS; 247 hp) @ 5300 rpm
400 N⋅m (300 ft⋅lb) @ 2400–3600 rpm
2012–2017

Opel Astra J OPC
206 kW (280 PS; 276 hp) @ 5500 rpm
400 N⋅m (300 ft⋅lb) @ 2500–4500 rpm
2014–2017

Buick Regal GS (China Market)
187 kW (254 PS; 251 hp) @ 5300 rpm
350 N⋅m (260 ft⋅lb) @ 2000–5000 rpm
2014–2017

Buick Regal GS (Hirsch Performance)
205 kW (279 PS; 275 hp) @ 5400 rpm
410 N⋅m (300 ft⋅lb) @ 3000–4000 rpm
2017–present

Opel Astra K TCR
257 kW (349 PS; 345 hp) @ 6300 rpm
420 N⋅m (310 ft⋅lb) @ 2500–4600 rpm


LHU (A20NFT Opel)



LHU adds E85 flex-fuel capability to the LDK. This engine is also known as A20NFT by GM Powertrain Europe. Maximum engine speed is listed at 6350 RPM.


Unique LHU features include:


  • a twin-scroll turbocharger

  • cam-driven high-pressure gasoline direct injection fuel system

  • dual camshaft continuously variable valve timing


  • sodium-filled stainless steel Inconel exhaust valves

  • low-friction cast aluminum pistons with oil squirters

  • forged steel crankshafts

  • cast stainless steel exhaust manifold

  • sand casted gen3 block

  • larger bosch injectors 0 261 500 112 with ethanol safe seals due to flex fuel compatibility


























Year(s)
Model
Power
Torque
Dyno Chart
2011–2013

Buick Regal Turbo
220 hp (160 kW) @ 5300 rpm
258 ft⋅lb (350 N⋅m) @ 2000 rpm

2011–2012

Saab 9-5 Turbo4
220 hp (160 kW) @ 5300 rpm
258 ft⋅lb (350 N⋅m) @ 2000 rpm

2011–2013

Buick Regal GS
270 hp (200 kW)[7]295 ft⋅lb (400 N⋅m) @ 2400 rpm

2013–2016

Buick Verano Turbo[8]
250 hp (190 kW) @ 5300 rpm
260 ft⋅lb (353 N⋅m) @ 2000 rpm

link

Note: The A20NFT engine in Opel Astra K TCR car had swapped the original direct fuel injection into multi-point fuel injection.



2.2



L61


In 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.[9] Compression ratio is 10.0:1.


The L61 was used in the following cars:




























Year(s)
Model
Power
Torque
2007–2008

Chevrolet Cobalt
148 hp (110 kW) @ 5600 rpm
152 ft⋅lb (206 N⋅m) @ 4200 rpm
2007

Chevrolet HHR
149 hp (111 kW) @ 5600 rpm
152 ft⋅lb (206 N⋅m) @ 4000 rpm
2008
152 ft⋅lb (206 N⋅m) @ 4200 rpm
2007–2008

Chevrolet Malibu
145 hp (108 kW) @ 5600 rpm
152 ft⋅lb (206 N⋅m) @ 4200 rpm
2007–2008

Pontiac Pursuit/G5
148 hp (110 kW) @ 5600 rpm
152 ft⋅lb (206 N⋅m) @ 4200 rpm
2007

Saturn Ion
145 hp (108 kW) @ 5600 rpm
150 ft⋅lb (203 N⋅m) @ 4200 rpm


LAP


The LAP is a 2.2 L—2,198 cc (134.1 cu in)—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, dual variable valve timing, 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 86 mm (3.4 in) and 94.6 mm (3.72 in), 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
155 hp (116 kW) @ 6100 rpm
150 ft⋅lb (203 N⋅m) @ 4900 rpm
2009

Pontiac G5
155 hp (116 kW) @ 6100 rpm
150 ft⋅lb (203 N⋅m) @ 4900 rpm


LE8


The LE8 is an E85 compatible 2.2 L—2,198 cc (134.1 cu in)—version of the LAP Ecotec.[10] Bore and stroke remain the same 86 mm (3.4 in) and 94.6 mm (3.72 in). Compression ratio is 10.0:1 and the engine can run on both regular unleaded gasoline or E85.












Year(s)
Model
Power
Torque
2009–2011Chevrolet HHR155 hp (116 kW) @ 6100 rpm (gasoline)150 ft⋅lb (203 N⋅m) @ 4800 rpm (gasoline)
160 hp (120 kW) @ 6000 rpm (E85)
158 ft⋅lb (214 N⋅m) @ 4600 rpm (E85)


2.4



LE5




Ecotec LE5 engine in a 2006 Pontiac Solstice


The LE5 is a larger 2.4 L—2,384 cc (145.5 cu in)—version of the Ecotec. Both the 88 mm (3.5 in) bore and 98 mm (3.9 in) 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. Connecting Rods are GKN Forged C70 Powered Metal from July 2007 on.


























































Year(s)
Model
Power
Torque
2006–2008

Buick Lacrosse (China)
168 hp (125 kW) @ 6400 rpm
166 ft⋅lb (225 N⋅m) @ 4800 rpm
2006–2007

Chevrolet Cobalt SS
173 hp (129 kW) @ 6200 rpm
163 ft⋅lb (221 N⋅m) @ 4800 rpm
2008

Chevrolet Cobalt Sport
171 hp (128 kW) @ 6200 rpm
167 ft⋅lb (226 N⋅m) @ 4800 rpm
2006–2008

Chevrolet HHR
175 hp (130 kW)
165 ft⋅lb (224 N⋅m)
2006–2008

Pontiac G5/Pursuit
171 hp (128 kW) @ 5800 rpm
167 ft⋅lb (226 N⋅m) @ 4500 rpm
2006–2009

Pontiac G6
169 hp (126 kW) @ 6300 rpm
162 ft⋅lb (220 N⋅m) @ 4500 rpm
2006–2009

Pontiac Solstice
173 hp (129 kW) @ 5800 rpm
164 ft⋅lb (222 N⋅m) @ 4500 rpm
2006–2009

Saturn Sky
177 hp (132 kW) @ 5800 rpm
173 ft⋅lb (235 N⋅m) @ 4800 rpm
2006

Saturn Ion
170 hp (130 kW) @ 6200 rpm
162 ft⋅lb (220 N⋅m) @ 4800 rpm
2007

Saturn Ion
175 hp (130 kW) @ 6500 rpm
164 ft⋅lb (222 N⋅m) @ 4800 rpm
2008–2009

Saturn Aura
169 hp (126 kW)
160 ft⋅lb (217 N⋅m)
2008–2012

Chevrolet Malibu
169 hp (126 kW)
160 ft⋅lb (217 N⋅m)
2008–2009

Saturn Vue
169 hp (126 kW) @ 6200 rpm
161 ft⋅lb (218 N⋅m) @ 5100 rpm

The LE5 is also used in the following overseas models:


  • 2006 GM Taiwan Buick LaCrosse

  • 2006 Shanghai GM Buick LaCrosse

  • Buick GL8

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.[11]



LAT


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


























Year(s)
Model
Power
Torque
2007–2009

Saturn Aura Green Line Hybrid
164 hp (122 kW) @ 6400 rpm
159 ft⋅lb (216 N⋅m) @ 5000 rpm
2007

Saturn Vue Green Line Hybrid
170 hp (130 kW) @ 6600 rpm
162 ft⋅lb (220 N⋅m) @ 4200 rpm
2008

Saturn Vue Green Line Hybrid
172 hp (128 kW) @ 6500 rpm
167 ft⋅lb (226 N⋅m) @ 4500 rpm
2008-2009

Buick Lacrosse hybrid(China only)
164 hp (122 kW) @ 6400 rpm
166 ft⋅lb (225 N⋅m) @ 4800 rpm
2008–2009

Chevrolet Malibu Hybrid
164 hp (122 kW) @ 6400 rpm
159 ft⋅lb (216 N⋅m) @ 5000 rpm


LE9


The LE9 is an E85 compatible version of the 2.4 L—2,384 cc (145.5 cu in)—LE5 Ecotec. Bore and stroke are 88 mm (3.5 in) and 98 mm (3.9 in) and has a compression ratio of 10.4:1, the same as the LE5.




















Year(s)
Model
Power
Torque
2009–2011Chevrolet HHR172 hp (128 kW) @ 5800 rpm (gasoline)167 ft⋅lb (226 N⋅m) @ 4500 rpm (gasoline)
176 hp (131 kW) @ 5800 rpm (E85)
170 ft⋅lb (230 N⋅m) @ 5000 rpm (E85)
2010–2012
Chevrolet Malibu (fleet only)
175 hp (130 kW) @ 5800 rpm (E85)170 ft⋅lb (230 N⋅m) @ 5000 rpm (E85)
2014-2018
Polaris Slingshot
173 hp (129kW) @ 6200 rpm
166 ft⋅lb (225 N⋅m) @ 4700 rpm


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.[12][13]


























Year(s)
Model
Power
Torque
2010–2011
Chevrolet Equinox
GMC Terrain
182 hp (136 kW) @ 6700 rpm (gasoline)172 ft⋅lb (233 N⋅m) @ 4900 rpm (gasoline)
2010–2011
Buick LaCrosse182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
2011
Buick Regal182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
2011–2014
Chevrolet Orlando174 hp (130 kW) @ 6700 rpm171 ft⋅lb (232 N⋅m) @ 4900 rpm
2011
Chevrolet Captiva182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm


LEA


The LEA is an E85 compatible variant of the LAF. Bore, stroke, and compression ratio all remain the same. Maximum engine speed is listed at 7000 RPM.



























Year(s)
Model
Power
Torque
Dyno Chart
2012–2013, 2015–2017
Buick Regal182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link
2012–2017
Buick Verano[14]
180 hp (134 kW) @ 6700 rpm171 ft⋅lb (232 N⋅m) @ 4900 rpm
link
2012–presentChevrolet Captiva Sport182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link
2012–2017
Chevrolet Equinox
GMC Terrain
182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link
link


LUK


The LUK is similar to the LAF, but adds the eAssist mild-hybrid system. Maximum engine speed is listed at 7000 RPM.



























Year(s)
Model
Power
Torque
Dyno Chart
2012–2016
Buick LaCrosse182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link
2012–2017
Buick Regal182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link
2013–2014

Chevrolet Malibu ECO
182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
2014
Chevrolet Impala182 hp (136 kW) @ 6700 rpm172 ft⋅lb (233 N⋅m) @ 4900 rpm
link


Generation III
















Generation III
Overview
Production2013–present
Layout
Displacement
  • 1,998 cc (121.9 cu in)

  • 2,457 cc (149.9 cu in)

Cylinder bore
  • 86 mm (3.4 in)

  • 88 mm (3.5 in)

Piston stroke
  • 86 mm (3.4 in)

  • 100.8 mm (3.97 in)

Compression ratio
  • 9.5:1

  • 11.3:1

Combustion

Fuel system
Spark Ignition Direct Injection (SIDI)
Fuel type
  • Gasoline


2.0



LTG (B20NHT)


A 2.0 L (1998 cc) turbocharged direct injection version of the gen III Ecotec was available in the 2013 Cadillac ATS and Chevrolet Malibu. This engine is also available in the Cadillac XTS and Cadillac XT5 in the Chinese market. Bore and stroke are both 86.0 millimetres (3.39 in), and compression is 9.5:1. The engine uses a 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 980 °C (1,800 °F) turbine temperature, and a rotacast aluminum alloy (A356T6) cylinder head with sodium-filled exhaust valves.[15] Maximum engine speed is listed at 7000 RPM.

























































































Year(s)
Model
Power
Torque
Dyno Chart
2013–2014
Cadillac ATS272 hp (203 kW) @ 5500 rpm260 ft⋅lb (353 N⋅m) @ 1700–5500 rpm
link
2015–present
295 ft⋅lb (400 N⋅m) @ 3000–4600 rpm
2013
Chevrolet Malibu259 hp (193 kW) @ 5300 rpm260 ft⋅lb (353 N⋅m) @ 1700–5500 rpm
2014–2015
295 ft⋅lb (400 N⋅m) @ 5200 rpm
link
2016–present
250 hp (186 kW) @ 5300 rpm260 ft⋅lb (353 N⋅m) @ 2000–5000 rpm
2013–present

Opel Insignia
250 PS (184 kW; 247 hp) @ 4500 rpm400 N⋅m (295 ft⋅lb) @ 2000–4500 rpm
2014–2017
Buick Regal259 hp (193 kW) @ 5300 rpm295 ft⋅lb (400 N⋅m) @ 3000–4000 rpm
(2500–4000 rpm for GS)

link
GS link
2018–present
250 hp (186 kW) @ 5400 rpm260 ft⋅lb (353 N⋅m) @ 2000–5200 rpm
(295 ft⋅lb (400 N⋅m) @ 3000–4000 rpm for AWD)

2014–present
Cadillac CTS268 hp (200 kW) @ 5600 rpm295 ft⋅lb (400 N⋅m) @ 3000–4500 rpm
link
2016–2018
Buick Envision252 hp (188 kW) @ 5500 rpm260 ft⋅lb (353 N⋅m) @ 2000 rpm
2019
295 ft⋅lb (400 N⋅m) @ 2000 rpm
2016–2018
Cadillac CT6265 hp (198 kW) @ 5500 rpm295 ft⋅lb (400 N⋅m) @ 3000–4000 rpm
2016–present

Chevrolet Camaro
275 hp (205 kW) @ 5600 rpm
295 ft⋅lb (400 N⋅m) @ 3000–4500 rpm
2017–present

Buick GL8
260 hp (194 kW) @ 5500 rpm
350 N⋅m (258 ft⋅lb) @ 2000-5000 rpm
2018–present

Chevrolet Equinox
252 hp (188 kW) @ 5500 rpm
260 ft⋅lb (353 N⋅m) @ 2500–4500 rpm
2018–present

Chevrolet Traverse
257 hp (192 kW) @ 5500 rpm
295 ft⋅lb (400 N⋅m) @ 3000 rpm
2018–present

GMC Terrain
252 hp (188 kW) @ 5500 rpm
260 ft⋅lb (353 N⋅m) @ 2500–4500 rpm
2018–present

Holden Commodore
256 hp (191 kW) @ 5500 rpm258 ft⋅lb (350 N⋅m) @ 3000–4000 rpm


LSY


A successor to the LTG debuted in the 2019 Cadillac XT4 and the 2019 Cadillac CT6. The LSY adds Active Fuel Management and a start-stop system, putting more priority to fuel economy than performance. Peak output is lower than the LTG, but is achieved at lower RPM for both power and torque. Bore is 83.0 millimetres (3.27 in), and stroke is 92.3 millimetres (3.63 in).[16]

















Year(s)
Model
Power
Torque
Dyno Chart
2019–

Cadillac CT6
237 hp (177 kW) @ 5000 rpm
258 ft⋅lb (350 N⋅m) @ 1500–4000 rpm
2019–

Cadillac XT4
237 hp (177 kW) @ 5000 rpm
258 ft⋅lb (350 N⋅m) @ 1500–4000 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.[15][17][18] LCV is scheduled to replace the direct-injected 2.4 L throughout North American GM products within a year.[19] Engine production started in April 2012 at GM's Tonawanda Engine 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. Maximum engine speed is listed at 7000 RPM.


Displacement for the 2.5 L engine is 2,457 cc (149.9 cu in) with an 88.0 millimetres (3.46 in) bore and 100.8 millimetres (3.97 in) stroke. Compression ratio is 11.3:1.

















































Year(s)
Model
Power
Torque
Dyno Chart
2013–2016[20]Cadillac ATS202 hp (150.69 kW) @ 6300191 lbf⋅ft (259 N⋅m) @ 4400 rpm
link
2013
Chevrolet Malibu197 hp (146.96 kW) @ 6300 rpm191 lbf⋅ft (259 N⋅m) @ 4400 rpm
2015–present
Chevrolet Colorado200 hp (149 kW) @ 6300 rpm191 ft⋅lb (259 N⋅m) @ 4400 rpm
link
GMC Canyon
link
2016
Chevrolet Malibu Limited196 hp (146 kW) @ 6300 rpm186 ft⋅lb (252 N⋅m) @ 4400 rpm[21]
2017–present
Buick Envision197 hp (147 kW) @ 6300 rpm192 ft⋅lb (260 N⋅m) @ 4400 rpm
2017–present
Buick GL8197 hp (147 kW) @ 6300 rpm186 ft⋅lb (252 N⋅m) @ 4400 rpm
2017–present
GMC Acadia194 hp (145 kW) @ 6300 rpm190 ft⋅lb (258 N⋅m) @ 4400 rpm
2019
Chevrolet Blazer193 hp (144 kW) @ 6300 rpm188 ft⋅lb (255 N⋅m) @ 4400 rpm


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.[22] It also features a start-stop system. Maximum engine speed is listed at 7000 RPM.

















Year(s)
Model
Power
Torque
Dyno Chart
2014–present
Chevrolet Impala196 hp (146 kW) @ 6300 rpm191 ft⋅lb (259 N⋅m) @ 4400 rpm
link
2014–2015
Chevrolet Malibu196 hp (146 kW) @ 6300 rpm186 ft⋅lb (252 N⋅m) @ 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.[23] 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%.[24]



See also




  • Family 0 engine

  • Family 1 engine

  • List of GM engines


References




  1. ^ http://archives.media.gm.com/division/2005_prodinfo/powertrain/whats%20new/Ecotec/_2005%20LSJ.doc. Retrieved 16 April 2014. Missing or empty |title= (help).mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  2. ^ abcdefghi "GM's Ecotec 2.2-Liter 4-Cylinder Engine Delivers". The Auto Channel. Pontiac, Michigan. Retrieved 15 March 2013.


  3. ^ http://archives.media.gm.com/division/2005_prodinfo/powertrain/index.html. Retrieved 16 April 2014. Missing or empty |title= (help)


  4. ^ "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. Archived from the original on 2008-10-11. Retrieved 2012-05-22.


  5. ^ Chris Shunk RSS feed. "GM releases turbo upgrade kit for Solstice GXP, Sky Redline and HHR SS". Autoblog.com. Retrieved 2012-01-24.


  6. ^ "Big Power, Small Package". AutoWeek. Retrieved April 4, 2006.


  7. ^ "2012 Buick Regal GS rated at 270 hp". Autoweek. 2011-06-15. Retrieved 2012-01-24.


  8. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Jun/0611_turbov.html


  9. ^ "2008 Ecotec 2.2L I4 ( L61 )". Retrieved 30 July 2014.


  10. ^ https://www.chevyhhr.net/forums/general-hhr-4/why-2010-2011-le8-more-fuel-effeciant-longevity-greater-48353/


  11. ^ http://www.polaris.com/en-us/slingshot


  12. ^ "NAIAS 09: 2010 ECOTEC 2.4l SIDI". Gminsidenews.com. Retrieved 2012-01-24.


  13. ^ 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.


  14. ^ "Buick Introduces The All-New 2012 Verano". Media.gm.com. 2011-01-06. Retrieved 2012-01-24.


  15. ^ ab http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0920_malibu_turbo_eng.html


  16. ^ http://media.cadillac.com/media/us/en/cadillac/vehicles/xt4/2019.tab1.html


  17. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_ecotec_25_efficient


  18. ^ http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_malibu_noise_vibration


  19. ^ http://blog.caranddriver.com/gm-to-replace-2-4-liter-fours-with-2-5-liters-across-the-range/


  20. ^ http://www.motortrend.com/news/2017-cadillac-ats-drops-base-2-5-liter-i-4-engine-option/


  21. ^ http://www.gmfleetorderguide.com/NASApp/domestic/printbook.jsp?year=2016&regionID=1&lang=1&divisionID=3&vehicleID=17805


  22. ^ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0917_intakevalve.html


  23. ^ General Motors Europe (May 2008). "A Look Into the Future of Engines and Transmissions". CONTROLLED AUTO-IGNITION HCCI.


  24. ^ "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.







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