GM Medium Gasoline Engine

General Motors Medium Gasoline Engine
General Motors Medium Gasoline Engine
Overview
Manufacturer	SAIC MOTOR
Also called	MGE
Production	2012–present
Layout
Configuration	Inline-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); 86 mm (3.4 in);
Piston stroke	81.5 mm (3.21 in); 88.2 mm (3.47 in); 86 mm (3.4 in);
Cylinder block material	Cast iron
Cylinder head material	Aluminum
Valvetrain	DOHC
Compression ratio	9.5:1; 10:1; 11.5:1;
Combustion
Turbocharger	In 1.6 L and 2.0 L
Fuel system	SIDI
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	122–231 PS (90–170 kW; 120–228 hp)
Torque output	175–360 N⋅m (129–266 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);
Height	701 mm (27.6 in)
Dry weight	109–142 kg (240–313 lb)
Chronology
Predecessor	Family 1

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

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 1,995 cc (2.0 L) 20A4E 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 is developed and manufactured by Chinese Saic Motor company. 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

Name	Displacement	Bore x Stroke	Compression Ratio	Power	Torque
A16XHT (LVP)	1,598 cc (97.5 cu in)	79 mm × 81.5 mm (3.11 in × 3.21 in)	9.5:1	170 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)	1,598 cc (97.5 cu in)	79 mm × 81.5 mm (3.11 in × 3.21 in)	9.5:1	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)	11.5:1	122 PS (90 kW) at 5000 rpm	175 N⋅m (129 lb⋅ft) at 4750 rpm
SAIC 20L4E 2.0 TGI (NetBlue)	1,995 cc (121.7 cu in)	88 mm × 82 mm (3.5 in × 3.2 in)	10.0:1	231 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)
SAIC 20A4E 2.0 TGI (NetBlue)	1,986 cc (121.2 cu in)	82.5 mm × 92.9 mm (3.25 in × 3.66 in)		261 PS (192 kW) at 5500–6000 rpm	405 N⋅m (299 lb⋅ft) at 1750–3500 rpm