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GM small gasoline engine

Small Gasoline Engine
Opel Motor B10XFT Einlass-Seite Aufgeschnitten.jpg
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).

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.

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.


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Wikipedia

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