GM Medium Gasoline Engine

Medium Gasoline Engine (MGE) is a medium-displacement 4-cylinder gasoline engine developed by Opel Automobile GmbH and marketed as 'SIDI Ecotec'.

Medium Gasoline Engine
Overview
ManufacturerGeneral Motors
Also calledMGE
Production2012 (2012)–present
Layout
ConfigurationInline-4
Displacement
  • 1,598 cc (97.5 cu in)
  • 1,796 cc (109.6 cu in)
  • 1,995 cc (121.7 cu in)
Cylinder bore
  • 79 mm (3.11 in)
  • 80.5 mm (3.17 in)
Piston stroke
  • 81.5 mm (3.21 in)
  • 88.2 mm (3.47 in)
Block materialCast iron
Head materialAluminum
ValvetrainDOHC
Compression ratio
  • 9.5:1
  • 11.5:1
Combustion
TurbochargerIn 1.6 L and 2.0 L
Fuel systemSIDI
Fuel typeGasoline
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output122–200 PS (90–147 kW; 120–197 hp)
Torque output175–300 N⋅m (129–221 lb⋅ft)
Dimensions
Length
  • 583 mm (23.0 in)
  • 638 mm (25.1 in)
Width
  • 643 mm (25.3 in)
  • 564 mm (22.2 in)
Height701 mm (27.6 in)
Dry weight109–142 kg (240–313 lb)
Chronology
PredecessorFamily 1

History

Production began in late 2012 at Szentgotthárd, Hungary.[1][2] The engine features Start/Stop and reduces fuel consumption and CO2 emissions by 13 percent comparing to the predecessor, while maintaining Euro 6 emissions standards.[3]

A turbocharged Eco variant delivering 170 PS (125 kW; 168 hp) @ 4250 rpm and 260 N⋅m (192 lb⋅ft) @ 1650-4250 rpm (overboost 280 N⋅m (207 lb⋅ft)) has been introduced at 2012 Moscow International Automobile Salon (MIAS); a Performance version with maximum torque 300 N⋅m (221 lb⋅ft) and peak power 200 PS (147 kW; 197 hp) will also be available. Each version features unique turbine aerodynamic, and aggressive boost strategies improve low-end torque.[4]

The high-performance turbocharged 1,598 cc (1.6 L) engine with central direct injection has 79 mm × 81.5 mm (3.11 in × 3.21 in) bore and stroke, with cylinder pressure of 130 bar (1,900 psi) and compression ratio of 9.5:1 for Performance version and 10.5:1 for Eco version. It uses a grey cast-iron block with die-cast aluminum bedplate, aluminum cylinder head, chain-driven DOHC valvetrain with hydraulic tensioners, dual continuous variable cam phasing, and forged steel crankshaft. The engine has twin balance shafts and specially designed cam cover to improve NVH, while optimized compressor geometry, acoustic resonators and overall air handling help reduce noise by 2 dB. Centrally placed injector allows optimal operation in both stratified and homogeneous charge ignition. Optimized main bearing journal diameter, roller cam followers, and PVD coated piston rings reduce friction.[4]

Starting in 2013, the engine began to replace turbocharged 1.6 L Family I Ecotec engine in Opel cars, and in 2014-2015 it will replace naturally aspirated 1.6 L and 1.8 L Family 1 engines in Chevrolet cars. Starting with 2020 model year, this engine is no longer available for the United States market, due to Buick Cascada and Chevrolet Malibu Hybrid being phased out because of low sales and high importation taxes from Europe.

Models
NameDisplacementBore x StrokeCompression RatioPowerTorque
A16XHT (LVP)1,598 cc (97.5 cu in)79 mm × 81.5 mm (3.11 in × 3.21 in)9.5:1170 PS (125 kW) at 4750-6000 rpm
  • 260 N⋅m (192 lb⋅ft) at 1650-4250 rpm
  • 280 N⋅m (207 lb⋅ft) (overboost)
A16SHT/B16SHT (LWC)200 PS (147 kW) at 5500 rpm
  • 280 N⋅m (207 lb⋅ft) at 1650-5000 rpm
  • 300 N⋅m (221 lb⋅ft) at 1700–4700 rpm (overboost)
(LKN)1,796 cc (109.6 cu in)80.5 mm × 88.2 mm (3.17 in × 3.47 in)11.5:1122 PS (90 kW) at 5000 rpm175 N⋅m (129 lb⋅ft) at 4750 rpm
SAIC 20L4E 2.0 TGI
(NetBlue)		 1,995 cc (121.7 cu in)80.5 mm × 88.2 mm (3.17 in × 3.47 in)11.5:1231 PS (170 kW) at 5300 rpm
218 PS (160 kW) at 5300 rpm (Euro 6)
224 PS (165 kW) at 5000 rpm (Euro 5)		350 N⋅m (258 lb⋅ft) at 2500–4000 rpm
360 N⋅m (266 lb⋅ft) at 2000–4000 rpm (Euro 6)
350 N⋅m (258 lb⋅ft) at 2500–3500 rpm (Euro 5)

Applications

The 170 PS (125 kW) Eco version of the engine (code A16XHT) is used in:

The 200 PS (147 kW) Pro version of the engine (code A16SHT) is used in:

The 200 PS (147 kW) Pro version of the engine (code B16SHT - Euro 6) is used in:

The LKN is used in:

The SAIC 20L4E (NetBlue) is used in:

See also

References
  1. "Opel Expands Engine Production in Szentgotthárd, Hungary". Media.gm.com. 2010-09-21. Retrieved 2012-06-04.
  2. "New Opel Engine plant inaugurated in Szentgotthárd, Hungary". Media.gm.com. 2012-09-20. Retrieved 2012-10-01.
  3. "New generation 1.6 turbo begins powertrain renewal at Opel". Media.gm.com. 2012-05-14. Retrieved 2012-06-04.
  4. "Opel presents new midsize gasoline engine at Aachen Colloquium". Media.gm.com. 2012-10-10. Retrieved 2012-10-17.


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