GM Medium Gasoline Engine
|Medium Gasoline Engine|
|Displacement||1,598 cc (97.5 cu in)|
|Cylinder bore||79.0 mm (3.1 in)|
|Piston stroke||81.5 mm (3.2 in)|
|Cylinder block alloy||Cast iron|
|Cylinder head alloy||Aluminum|
|Fuel system||Gasoline direct injection|
|Oil system||Wet sump|
Medium Gasoline Engine (MGE) is a medium-displacement 4-cylinder gasoline engine developed by Adam Opel AG and marketed as 'SIDI Ecotec'. Production began in late 2012 at Szentgotthárd, Hungary. 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.
A turbocharged Eco variant delivering 170 PS (125 kW; 168 hp) @ 4250 rpm and 260 N·m (192 lbf·ft) @ 1650-4250 rpm (overboost 280 N·m (207 lbf·ft)) has been introduced at 2012 Moscow International Automobile Salon (MIAS); a Performance version with maximum torque 300 N·m (221 lbf·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.
The high-performance turbocharged 1.6 L (1598 cc) engine with central direct injection has 79.0 mm (3.1 in) bore and 81.5 mm (3.2 in) stroke, with cylinder pressure of 130 bar 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.
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.
The 170 PS Eco version of the engine (code A16XHT) is used in:
The 200 PS Pro version of the engine (code A16SHT) is used in:
- "Opel Expands Engine Production in Szentgotthárd, Hungary". Media.gm.com. 2010-09-21. Retrieved 2012-06-04.
- "New Opel Engine plant inaugurated in Szentgotthárd, Hungary". Media.gm.com. 2012-09-20. Retrieved 2012-10-01.
- "New generation 1.6 turbo begins powertrain renewal at Opel". Media.gm.com. 2012-05-14. Retrieved 2012-06-04.
- "Opel presents new midsize gasoline engine at Aachen Colloquium". Media.gm.com. 2012-10-10. Retrieved 2012-10-17.
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