GM small gasoline engine

Small Gasoline Engine
Overview
Manufacturer General Motors
MG Motor
Shanghai Automotive Industry Corporation
Hirata Corporation
Also called Microtec
Production 2013 (2013)–present
Combustion chamber
Configuration Straight-3
Straight-4
Displacement
  • 999 cc (61.0 cu in)
  • 1,117 cc (68.2 cu in)
  • 1,399 cc (85.4 cu in)
  • 1,490 cc (90.9 cu in)
Cylinder bore 74 mm (2.91 in)
Piston stroke
  • 77.4 mm (3.05 in)
  • 81.3 mm (3.20 in)
  • 86.6 mm (3.41 in)
Cylinder block alloy Aluminium
Cylinder head alloy Aluminium
Valvetrain DOHC
Compression ratio 10.0:1 - 12.5:1
Combustion
Fuel system
Fuel type
Oil system Wet sump
Cooling system Water cooled
Output
Power output 55–121 kW (75–165 PS)
Torque output 95–249 N·m (70–184 lb·ft)
Chronology
Predecessor S-TEC
Family 0

The small gasoline engine (SGE) is a family of small-displacement three- and four-cylinder gasoline engines ranging from 1.0 L to 1.5 L, developed by Adam Opel AG, Shanghai Automotive Industry Corporation (SAIC), MG Motor (MG), Shanghai GM (SGM) and the Pan-Asia Technical Automotive Center (PATAC).[1]

The new global family is designed to improve fuel economy, performance, and emissions, reduce noise and vibrations. To achieve this, it features lightweight design and advanced technologies like gasoline direct injection, turbocharging, variable length intake manifold and alternative fuel compatibility. It utilizes modular approach with interchangeable components that can be suited to specific application.

The initial engine variants include 1.0 L (999 cc) I3 DI DCVCP turbo (77.4 mm stroke), 1.1 L (1118 cc) I3 PFI (86.6 mm stroke), 1.4 L (1399 cc) I4 DI DCVCP turbo (81.3 mm stroke) and 1.5 L (1490 cc) I4 PFI (86.6 mm stroke). All are derived from just two blocks (three and four cylinder) sharing a common 74-mm bore with 81-mm bore spacing. Mitsubishi Heavy Industries provides one-stage single-scroll turbocharger.[2]

To aid with NVH (Noise, vibration, and harshness) levels the direct injection fuel rail mounts to the cylinder head and valve cover via bushings that isolate that loud ticking noise the injector pintles make. GM claims that the 1.0-liter turbo is 25 percent (3 dBA) quieter than the Ford Fiesta’s 1.0-liter turbo, and the 1.4-liter is up to 50 percent (6 dBA) quieter than the VW/Audi 1.4-liter turbo. Other silencing measures include a bed-plate cylinder block that increases stiffness, a stiffened aluminum front cam cover. Three-cylinder variants get a counter-rotating (engine-speed) balance shaft that’s integrated with the oil pump and located inside the two-piece aluminum oil pan to prevent radiated noise. GM assure the EcoTec triple will idle more smoothly than Ford’s three-cylinder, which does not use a shaft.[2]

All turbocharged variants will provide 90 percent of their max torque between 1500 and 5000 rpm, with peak power arriving between 5600 and 6000 rpm. The MHI turbos are sized to provide quick torque response, and are mounted very close to the cylinders, thanks to cylinder heads that incorporate the exhaust manifolds in the head.[2]

To reduce mass, the engines are compact in all directions, made almost entirely of aluminum, and feature composite intake manifolds. This removes 44 pounds (20 kg) from the existing 1.4-liter turbo in the Cruze and makes it 8 pounds (3,6 kg) lighter than the 1.4-liter VW turbo. GM say this engine weighs 216 pounds (98 kg), ready for installation.[2]

The engines will first debut in the 2014 Opel Adam [3] and will be produced in Szentgotthárd, Hungary[4][5] and GM's Flint Engine plant.[6] The new engine family will spread to other brands and markets by the end of the decade and will replace three separate engine families (S-TEC, Family 0, and Family 1).

The engine will be used in:

The assembly lines for North American facilities were manufactured by Hirata Corporation at their powertrain facility in Kumamoto, Japan.

I4

1.4

LV7

The LV7 is the multi-point fuel injection 1.4L naturally aspirated variant of the SGE engine, with a 74mm bore and 81.3mm stroke for a total capacity of 1399cc. Compression ratio is 10.6:1 and the engine can run on regular unleaded grade gasoline. Assembly is in Changwon, South Korea.

Year(s) Model Power Torque Dyno Chart
2016- Chevrolet Spark73 kW (98 hp) @ 6200 RPM94 lbf·ft (128 N·m) @ 4400 RPMdyno chart

LE2

The LE2 is the direct injection 1.4L turbocharged variant of the SGE engine, with a 74mm bore and 81.3mm stroke for a total capacity of 1399cc. Compression ratio is 10.0:1 and the engine can run on regular grade gasoline. The LE2 is also be paired with Start-Stop technology in some vehicles.

Year(s) Model Power Torque Dyno Chart
2016- Buick Encore Sport Touring114 kW (153 hp) @ 5600 RPM177 lbf·ft (240 N·m) @ 2000-4000 RPM
2016- Chevrolet Cruze114 kW (153 hp) @ 5600 RPM177 lbf·ft (240 N·m) @ 2000-4000 RPMdyno chart

1.5

L3A

The L3A is the direct injection 1.5L naturally aspirated variant of the SGE engine used in the second generation Chevrolet Volt, with a 74mm bore and 86.6mm stroke for a total capacity of 1490cc. Compression ratio is 12.5:1 and the engine can run on regular unleaded grade gasoline. Maximum engine speed is 6000 RPM.

Year(s) Model Power Torque Dyno Chart
2016- Chevrolet Volt75 kW (100 hp) @ 5600 RPM103 lbf·ft (140 N·m) @ 4300 RPM

LFV

The LFV is the direct-injection 1.5L turbocharged variant of the SGE engine, with a 74mm bore and 86.6mm stroke for a total capacity of 1490cc. Compression ratio is 10.0:1 and the engine can run on regular unleaded grade gasoline. Maximum engine speed is 6500 RPM. Automatic Start-Stop is available with this engine. Assembly is in Toluca (Mexico), Springhill (Tennessee) and Flint (Michigan).

Year(s) Model Power Torque Dyno Chart
2016- Chevrolet Malibu122 kW (163 hp) @ 5700 RPM184 lbf·ft (250 N·m) @ 2000-4000 RPMdyno chart
2016- Buick Envision126 kW (169 hp) @ 5600 RPM184 lbf·ft (250 N·m) @ 1700-4000 RPMdyno chart
2016- Chevrolet Cruze
Variant # cylinder Bore
and stoke (mm)		 CC Aspiration Compression Ratio of
 PS
/rpm		 torque
Nm/rpm		 Applications Years of
production
B10XF3 cylinder
in line		74x77.4999Naturally aspirated
Direct Injection		10.575/650096/4500Opel Karlfrom 03/2015
B10XFLDirect Injection
turbocharger		90/
3700-6000		170/
1800-3700		Opel Adam 1.0 SGEfrom 11/2014
Opel Corsa E 1.0 SGE Turbofrom 11/2014
105/5000170/
1800-4250		Opel Astra K 1.0 Turbofrom 07/2015
B10XFT115/
5000-6000		170/
1800-4500		Opel Adam 1.0 SGEfrom 11/2014
Opel Corsa E 1.0 SGE Turbo (115 CV)from 11/2014
B14XE4 cylinder
in line		74x81.31399Naturally aspirated
Indirect Injection		10.6101/6000130/4000Opel Astra K 1.4 16vfrom 07/2015
B14XFLDirect Injection
turbocharger		10125/
4000-5600		245/
2000-3500		Opel Astra K 1.4 Turbo from 07/2015
B14XFT150/
5000-5600		Opel Astra K 1.4 Turbo from 07/2015

See also

References

  1. ↑ "Future Chevrolets to Benefit from Small Gas Engine Family". Media.gm.com. 2011-10-12. Retrieved 2012-05-29.
  2. 1 2 3 4 "General Motors Details New Modular I-3, I-4 Engines"
  3. ↑ http://media.opel.com/media/intl/en/opel/news.detail.html/content/Pages/news/intl/en/2012/opel/07_11_opel_adam.html
  4. ↑ "Opel Expands Engine Production in Szentgotthárd, Hungary". Media.gm.com. 2010-09-21. Retrieved 2012-05-29.
  5. ↑ Autonews: New Opel minicar set to debut small engine co-developed with China's SAIC
  6. 1 2 Loveday, Eric. "Official: 2016 Chevy Volt To Get 1.5-Liter, 4-Cylinder Range Extender". Inside EVs. Retrieved 28 October 2014.
  7. ↑ http://www.carnewschina.com/2014/10/06/this-is-the-mg-gt-for-the-chinese-car-market/
  8. ↑ http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2015/jul/0720-encore.html
Wikimedia Commons has media related to General Motors Small Gasoline engine.
This article is issued from Wikipedia - version of the 9/13/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.