| Small Gasoline Engine | |
| Aka: | Microtec |
| Production: | –present |
| Successor: | GM E-Turbo engine (1.4 Version) |
| Bore: | 742NaN2 |
| Block: | Aluminium |
| Head: | Aluminium |
| Valvetrain: | DOHC 4 valves × cyl. |
| Timing: | Chain |
| Compression: | 10.0:1 – 12.5:1 |
| Turbocharger: | Mitsubishi Heavy Industries one-stage single-scroll (some versions) |
| Oilsystem: | Wet sump |
| Coolingsystem: | Water cooled |
| Power: | 75- |
| Torque: | 70- |
| Redline: | 6500 |
| Weight: | 216lb |
The GM Small Gasoline Engine (SGE) is a family of small-displacement, inline 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, while reducing noise and vibrations. To achieve this, it features a lightweight design and advanced technologies like gasoline direct injection, turbocharging, variable-length intake manifolds, and alternative fuel compatibility. It uses a modular approach with interchangeable components that can be suited to specific applications.
The SGE is available in the following displacements:
All engines share a common block design (depending on the number of cylinders) and a 74mm bore with 81mm bore spacing. The one-stage single-scroll turbocharger in turbocharged variants is supplied by Mitsubishi Heavy Industries.[2]
To reduce noise, vibration, and harshness (NVH) levels, the direct injection fuel rail mounts to the cylinder head and valve cover via bushings that isolate the loud ticking noise that 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 and a stiffened aluminum front cam cover. Three-cylinder variants get a balance shaft that is integrated with the oil pump and located inside the two-piece aluminum oil pan to prevent radiated noise. The shaft counter-rotates at engine speed. GM claims that the EcoTec three-cylinder idles more smoothly than Ford's three-cylinder, which does not use a shaft.
All turbocharged variants provide 90 percent of their maximum torque between 1500 and 5000 rpm, with peak power arriving between 5600 and 6000 rpm. The MHI turbochargers 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.
To reduce mass, the engines are compact in all directions, made almost entirely of aluminum, and feature composite intake manifolds. This removes 44lb from the existing 1.4-liter turbo in the Cruze and makes it 8lb lighter than the 1.4-liter VW turbo. GM says this engine weighs 216lb, ready for installation.[2]
The engines debuted in the 2014 Opel Adam[3] and are produced in Szentgotthárd, Hungary,[4] and GM's Flint Engine plant.[5] By 2018, the new engine family had spread to other brands and markets and had replaced three separate engine families (S-TEC, Family 0, and Family 1).
The assembly lines for North American facilities were manufactured by Hirata Corporation at its powertrain facility in Kumamoto, Japan.
The LV7 is the multi-point fuel injection 1.4 L naturally-aspirated variant of the SGE, with a NaNmm bore and stroke for a total capacity of 13991NaN1. Compression ratio is 10.6:1 and the engine can run on regular unleaded grade gasoline. Assembly is in Changwon, South Korea.
The LE2 is the direct-injection 1.4 L turbocharged variant of the SGE, with a NaNmm bore and stroke for a total capacity of 13991NaN1. Compression ratio is 10.0:1 and the engine can run on regular grade gasoline. The LE2 is also paired with a start-stop system in some vehicles.
| Year(s) | Model | Power | Torque | |
|---|---|---|---|---|
| 2016 | Buick Encore Sport Touring | 153abbr=on0abbr=on at 5600 rpm | 2400NaN0 at 2000–4000 rpm | |
| 2017–2019 | Buick Encore (Optional) | 153abbr=on0abbr=on at 5600 rpm | 2400NaN0 at 2000–4000 rpm | |
| 2021–2022 | Buick Encore | 155abbr=on0abbr=on at 5600 rpm | 2400NaN0 at 2000–4000 rpm | |
| 2016– | Chevrolet Cruze | 153abbr=on0abbr=on at 5600 rpm | 2400NaN0 at 2000–4000 rpm | |
| 2021–2022 | Chevrolet Trax | 155abbr=on0abbr=on at 5600 rpm | 2400NaN0 at 2000–4000 rpm |
The L3A is the direct-injection 1.5 L naturally-aspirated variant of the SGE used in the second-generation Chevrolet Volt, with a NaNmm bore and stroke for a total capacity of NaNbore=74. The 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 | |
|---|---|---|---|---|
| 2016–2019 | Chevrolet Volt | 100abbr=on0abbr=on at 5600 rpm | 1400NaN0 at 4300 rpm | |
| 2017–2019 | Buick Velite 5 | 106abbr=on0abbr=on at 5800 rpm | 1380NaN0 at 4400 rpm | |
| 2024– | MG 3 | 107abbr=on0abbr=on at 6000 rpm | 1280NaN0 at 4500 rpm | |
| 2020– | MG 5 | 112abbr=on0abbr=on at 6000 rpm | 1500NaN0 at 4500 rpm | |
| 2024– | MG 3 Hybrid+ | 192abbr=on0abbr=on at 6000 rpm | 2500NaN0 at 4500 rpm |
The LFV is a direct-injection 1.5 L turbocharged SGE variant, with a NaNmm bore and stroke for a total capacity of 14901NaN1. 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 Shanghai (China), Changwon (South Korea), Toluca (Mexico), Spring Hill (Tennessee), and Flint (Michigan).
| Year(s) | Model | Power | Torque | |
|---|---|---|---|---|
| 2016– | Chevrolet Malibu | 163abbr=on0abbr=on at 5700 rpm | 2500NaN0 at 2000–4000 rpm | |
| 2016– | Buick LaCrosse | 169abbr=on0abbr=on at 5600 rpm | 2500NaN0 at 1700–4000 rpm | |
| 2016–2021 | Buick Envision | 169abbr=on0abbr=on at 5600 rpm | 2500NaN0 at 1700–4000 rpm | |
| 2018– | MG HS | 162abbr=on0abbr=on at 5600 rpm | 2500NaN0 at 1700–4400 rpm | |
| 2020– | MG 5 LE | 171abbr=on0abbr=on at 5600 rpm | 2750NaN0 at 1750–4000 rpm | |
| 2021– | MG 6 PRO | 181abbr=on0abbr=on at 5600 rpm | 2850NaN0 at 1500–4000 rpm | |
| 2022– | MG 5 Scorpio Edition | 181abbr=on0abbr=on at 5600 rpm | 2850NaN0 at 1500–4000 rpm |
The LYX is a direct-injection 1.5 L turbocharged SGE variant, with a NaNmm bore and stroke for a total capacity of 14901NaN1. Compression ratio is 10.0:1 and uses regular unleaded gasoline.
| Year(s) | Model | Power | Torque | |
|---|---|---|---|---|
| 2018– | MG HS FFV | 162abbr=on0abbr=on at 5600 rpm | 2500NaN0 at 1700–4400 rpm | |
| 2020– | MG HS PHEV | 284abbr=on0abbr=on at 5500 rpm | 4800NaN0 at 1700–4300 rpm | |
| 2018–2022 | Chevrolet Equinox | 170abbr=on0abbr=on at 5600 rpm | 2750NaN0 at 2000–4000 rpm | |
| 2018–2022 | GMC Terrain | 170abbr=on0abbr=on at 5600 rpm | 2750NaN0 at 2000–4000 rpm |
The LSD is a direct-injection 1.5 L turbocharged SGE variant, with a NaNmm bore and stroke for a total capacity of 14901NaN1. Compression ratio is 10.0:1 and uses regular unleaded gasoline. This variant has a higher pressure fuel system than the LYX, increasing to 35 MPa from 20 MPa.
| Year(s) | Model | Power | Torque | |
|---|---|---|---|---|
| 2023– | Chevrolet Equinox | 175abbr=on0abbr=on at 5600 rpm | 2750NaN0 at 2000–4000 rpm | |
| 2023– | GMC Terrain | 175abbr=on0abbr=on at 5600 rpm | 2750NaN0 at 2000–4000 rpm |
| Variant |
| Bore x stroke | Displacement | Aspiration | Compression Ratio | Power output | Torque | Applications | Years of production |
|---|---|---|---|---|---|---|---|---|---|
| B10XE | Inline-3 | NaNmm | 9991NaN1 | Naturally aspirated Indirect injection | 10.5:1 | 75abbr=on0abbr=on at 6500 rpm | 960NaN0 at 4500 rpm | Opel Karl | from 03/2015 |
| B10XFL | NaNmm | Direct injection turbo | 90abbr=on0abbr=on at 3700–6000 rpm | 1700NaN0 at 1800–3700 rpm | Opel Adam 1.0 SGE | from 11/2014 | |||
| Opel Corsa E 1.0 SGE Turbo | from 11/2014 | ||||||||
| 105abbr=on0abbr=on at 5000 rpm | 1700NaN0 at 1800–4250 rpm | Opel Astra K 1.0 Turbo | from 07/2015 | ||||||
| B10XFT | 115abbr=on0abbr=on at 5000–6000 rpm | 1700NaN0 at 1800–4500 rpm | Opel Adam 1.0 SGE | from 11/2014 | |||||
| Opel Corsa E 1.0 SGE Turbo (115 CV) | from 11/2014 | ||||||||
| B14XE | Inline-4 | NaNmm | 13991NaN1 | Naturally aspirated Indirect injection | 10.6:1 | 101abbr=on0abbr=on at 6000 rpm | 1300NaN0 at 4000 rpm | Opel Astra K 1.4 16v | from 07/2015 |
| B14XFL | Direct injection turbo | 10.0:1 | 125abbr=on0abbr=on at 4000–5600 rpm | 2450NaN0 at 2000–3500 rpm | Opel Astra K 1.4 Turbo | from 07/2015 | |||
| B14XFT | 150abbr=on0abbr=on at 5000–5600 rpm | Opel Astra K 1.4 Turbo | from 07/2015 | ||||||
| B15XFL | 74 mm x 86.6 (2.91 in x 3.41 in) | 1490 cc (1.5 L) | 10.1:1 | 103 kW (140 hp)at 5600 rpm | 2500NaN0at 2000–4100 rpm | Opel Insignia B 1.5 Turbo | from 06/2017 | ||
| B15XFT | 121 kW (165 hp)at 5600 rpm | 2500NaN0at 2000–4500 rpm | Opel Insignia B 1.5 Turbo | from 06/2017 |