The 1.4Turbo SGE

SAIC and GM jointly developed MG GT powertrain interpretation

SAIC MG GT will be formally listed as a new launch and the flagship sports car can be described as highly anticipated.  Prior to this, we have on the car's exterior trim made ​​real shot , while its equipment inkaNet 4.0 multimedia entertainment system has done a detailed interpretation .  Today, the editors will bring everyone together Secret Another highlight of this car is the SAIC and GM jointly developed a new power system.




It is reported that, MG GT will launch a total displacement of two nine models.  Five models are used SAIC self-developed 1.5T engine , for which I think we should be relatively familiar, before it has been equipped in the Roewe 350 and MG5 on other models.  In addition to 1.5T engine , but in MG GT is the most exciting four with a new 1.4T engine models, it will provide six-speed manual and seven-speed dual-TST clutch two kinds of transmissions.







The jointly developed by SAIC and General Motors, after four years to complete the new power system is the first time in SAIC's models, but it also serves the just listed near the Chevrolet brand new Cruze .  The power system, whether or SAIC GM, have extremely important strategic significance.

■ SGE 1.4TGI turbocharged direct injection engine

The 1.4T turbocharged direct injection engine to its maximum power of 150 hp / 5600rpm, maximum torque of 235 Nm / 1600-4000rpm.  This data with the same level of mainstream 1.4T engine has certain advantages compared to.  It has has a turbocharged , direct-injection in the home, IEM integrated exhaust manifold, variable-displacement oil pump and engine start-stop system and so intelligent.

SAIC SGE 1.4TGI  ( MG GT )
Injection Method Direct injection
The maximum power 150 hp / 5600rpm
The maximum torque 235 Nm / 1600-4000rpm  











● turbo unit

This 1.4T engine is equipped with the turbo is composed of Shanghai Mitsubishi Heavy provided.  A turbine impeller and its dimensions are 37mm in diameter and 44mm.  The size of the turbine was chosen, according to SAIC engineers, this is precisely calculated and long-term results after the experiment, because for small-displacement engine , the relatively small diameter turbo , you can reduce turbo lag.





By contrast, if the use of large diameter turbine, can enhance the high-speed range of the engine power , but the power output under low speed will cause problems.  So now finally adopted this size, it makes the engine at 1500rpm can be achieved when more than 90% of maximum torque output, more suitable for everyday city driving.  At the same time, this turbocharger also uses electronic bypass control valve, the turbine can be more accurately controlled pressure to reduce turbo abnormal vibration at a specific speed range and conditions arising.

● direct injection technology in the home

For today's new engines , direct injection technology has not nothing new, but this engine is that it is different from the current highlight of the more common side-mounted jet, but the injector design for mid-mounted.  According to the engineer, the set design is more suitable for small-displacement engines , due to the small-displacement engine bore is relatively small, while the injector when the injector is bound to have a presence throughout the path is difficult to completely avoid hitting the opposite cylinder fuel, and produce a wet wall, affecting the combustion efficiency.  The center nozzle can be a good solution to this problem, while also reducing emissions of soot particles, which direct injection engine is very important.













Center injectors Another advantage is that from the spark plug more recent, higher combustion efficiency.  But also for the future of the lean-burn stratified combustion and homogeneous charge compression ignition (HCCI) to provide a technology upgrade protection.  This design is currently in the country's popularity is not high, but the future may be the mainstream trend.  In order to meet the set injector , piston top with a bowl-shaped design, allowing the mixture more concentrated closer to the spark plug , easy cold start, and better fuel efficiency.

● integrated exhaust manifold

Unlike traditional engine uses an external manifold for each cylinder has an exhaust manifold finally converging to one or two channels, more space, and this engine is used in integrated exhaust manifold, it cylinder head design together, in addition to compact size, lighter weight, but also to improve the engine 's thermal efficiency while reducing the complexity of the exhaust system to increase durability.







In the engine just started, the exhaust heat can be passed directly to the cylinder head , accelerate warm-up speed.  And medium to high output power when the operating conditions, since there head help cool the waterway may be appropriate to reduce the temperature of the exhaust gas, to improve turbocharger also helps the durability.

● variable displacement oil pump

Traditional oil pump is based on engine speed and enhance the continuous improvement of the fuel pump, power consumption will increase, but in fact at high speed cruising, the engine of oil demand is not so large, and variable displacement oil pump can solve this problem.  According to it the engine speed, load, etc., data, real-time adjustment of oil flow of the pump to meet the engine operating conditions different from the oil supply, which is the reduction of the engine is the excess energy consumption in a means of reducing fuel consumption.  In Europe NEDC fuel consumption and emissions evaluation criteria determined conditions, the use of variable displacement oil pump to reduce vehicle fuel consumption after 2%.






● engine smart start and stop

In order to reduce fuel consumption, this engine is also equipped with intelligent start-stop technology, and the system will automatically determine the battery level, the brake vacuum, air conditioning / heating and other factors, such as affecting the safety and comfort when driving, the system will not automatically shut down.






When the engine starts up again when needed, ECU will stop the moment according to the crankshaft phase, precise fuel injection and ignition timing is set to achieve the engine fast and smooth start.  According to manufacturer data reports, the use of intelligent start-stop system that can save fuel by 3.5%, reduce carbon emissions by 3.5%.  Manual model also introduces a relatively unique feature, when the novice driving carelessly flameout, just hanging into neutral again, the engine will start automatically, greatly simplifying the operating convenience.

● Electronic Thermostat

In order to reduce fuel consumption, improve engine temperature control performance, this engine uses an electronic thermostat , compared with the traditional use of paraffin mechanical thermostat , it can more precisely control temperature, so that the engine in all conditions are to obtain the desired operating temperature.



● dual variable intake and exhaust timing structure

This engine uses a DOHC DOHC design, and equipped with DVVT dual variable intake and exhaust timing mechanism for enhancing engine performance under both high and low speeds to help, this is now more mainstream technology.  In addition, it uses can be done almost maintenance-free timing chain , and in order to enhance quietness with a reverse gear chain, so the timing chain and wheel can have a better engagement, has reached more than ordinary timing chain better quietness.







Mentioned mute, this engine high pressure fuel pump location also conducted a special design, which unlike traditional direct-injection gasoline engines , like on the top, easy to form diffusion, which is located in the intake manifold side, able to do a good diffusion noise barrier, so whether it is interior or exterior, can hear "da da" sound, will be very light.  At the same time, this engine in the structure, vibration design are optimized for noise reduction.  According to manufacturers personnel, they measured this engine noise than the same type of domestic Ashkenazi engine low 6 db.

■ TST 7-speed dual- clutch gearbox

With the 1.4T engine is matched jointly developed by SAIC and GM TST 7-speed dual- clutch gearbox, codenamed DCT250.  He is from Shanghai Co., Ltd. auto gearbox, 320,000 kilometers bench test, road test five million kilometers, according to engineer its road test covering the whole territory of China all can think of extreme road conditions.







Between the current market dual clutch gearbox exist or there have been problems, this gearbox in heat resistance, as well as the layout of the control mechanism on the TCU were specially designed.  In terms of heat resistance, it uses a special friction material, heat-resistant up to 500 ℃, and enhanced thermal control, when the transmission overheating will limit the shift to reduce heat generation, protection gearbox.  Meanwhile, the brake system is carried out with the gearbox, the needs of different kinetic conditions, the braking system will be involved in advance in order to reduce the severity of transmission friction plate, thereby reducing the heat.





It also uses a high-strength and high durability of electro-hydraulic control system design, TCU is not affected oil, to avoid the risk of a single solenoid valve for a hydraulic system failure caused power outages.  The gearbox integrated transmission efficiency of 94%, the maximum efficiency reached 97%, and the use of life-long maintenance-free, low viscosity transmission oil.



As for the double- clutch gearbox problem of the low-speed ride comfort, design engineer said this in the beginning to do a full consideration, especially with China's congestion.  Its overall ratio up to 7.47, a large ratio range to the greatest extent, the release of engine torque , with the intelligent gear meshing techniques to reduce pre feeling frustrated, make driving more smoothly.

Editorial comment:

From MG GT are equipped with this by SAIC and General Motors jointly developed 1.4T turbocharged engine speed TST +7 double clutch gearbox combination, both the technical indicators or dynamic parameters are in industry-leading standards.  Its introduction, not only enriched the diversity of SAIC powertrain choices, the product has a more times, while enhancing the overall competitiveness of products for SAIC's models, technology research and development experience, personnel training and so has a pivotal role .  This project is an important symbol of China's domestic car prices powerful combination of international auto giants also have mileage monument style sense.  And using the same powertrain and just listed near the new Cruze 1.4T models ran a 8.49 seconds in the measurement of the 0-100km / h acceleration performance , impressive, and it is equipped with the MG GT on performance, it is worthy of our expectations.

Windy wrote:Was this feature added specifically for Jeremy Clarkson?

"Manual model also introduces a relatively unique feature, when the novice driving carelessly flameout, just hanging into neutral again, the engine will start automatically, greatly simplifying the operating convenience."



(flameout == stall)

mg-zs wrote:Will look at that later.
Got bit distracted by that mirror

EPS electric power steering system is more fuel-efficient high-precision


MG GT whole system comes standard EPS Electric Power Steering system really gave us no small surprise to know that such a configuration in its class can be few and far between. In general, the hydraulic power steering system efficiency of 60% -70%, while the higher EPS efficiency up to 90%. This is MG GT customized column type electric power steering system, to achieve high-precision power steering , mute noise outstanding, high reliability and security goals.

Rely on the traditional hydraulic power engines running to drive the hydraulic pump, hydraulic steering system so would make the whole engine fuel consumption increased by 3% -5%, while the EPS to the battery energy to the motor-driven components, independently of the engine work, EPS almost no direct consumption of engine power, reducing vehicle fuel consumption during use. MG GT 's EPS system can reduce vehicle fuel consumption by 2.5%.

In addition, MG GT 's electric power steering system not only integrates with the steering, auxiliary back positive and other functions, but also on the steering control performance was a special adjustment in adhering to the British sports style, based on the user's perception of both China and do to a "low-light, high-speed calm," the manipulation of feelings, very consistent with the market positioning of high-performance mid-size car.

According to reports, MG GT steering system development has experienced four years, three were carried out before and after a total of approximately 3,000 items of electrical control subsystem verification testing, system integration bench more than 150 items of validation tests and more than 200 vehicles Abuse and robustness tests, and there are more than 50 vehicles accumulated about 3 million kilometers of road mileage verification, with high reliability, to meet international safety evaluation criteria.

inkaNet 4.0 intelligent network traffic system operation more convenient and more powerful


Efficient powertrain make MG GT is more powerful, secure, reliable, excellent vehicle information service system will make it even more peace of mind, effort, and more interesting. SAIC inkaNet birth of intelligent network traffic system to solve the traffic congestion, system operation and insecurity due to the complexity of the operation to bring the three "pain points", have a good reputation in the industry and consumers, has 200,000 users installed . 85 After the higher life of the Internet traffic demands, SAIC will be the latest development of inkaNet 4.0 version for MG GT , the system on both the hardware and software of a comprehensive upgrade.

Compared to the previous version 3.0, MG GT equipped with the inkaNet 4.0 interface becomes more simple, the operation is more convenient. inkaNet 4.0 using iMX6 dual-core processor, the car engine can run at multi-tasking conditions, faster 50%, do not lose iPhone6, comparable to the Tesla; upgrade internal storage space to 16G, can meet the 2020 Chinese map data and junctions 3D Virtual Figure Update needs; new 7-inch LCD with infrared touch LCD screen to achieve finger silky touch, avoiding the hard-reflective screen caused discomfort, but this structure does not need to cover the touch screen layer, improved light transmittance over 10% let driving the process more comfortable driver's line of sight.

inkaNet 4.0 Another highlight is the "freedom of speech to say" feature. Compared to the previous generation, inkaNet 4.0 can recognize almost any instruction driver said, whether navigation instructions, radio FM, or find nearby gas stations, listen to any song, as long as the word can easily get truly both hands on the steering wheel while driving, his eyes leave the road, equivalent to more than a layer of security.

"3D holographic free exercise of navigation" function is also commendable. 3D holographic freedoms of navigation and map with the road network, more perfect match on route planning, not only for motorists have immersive navigation experience, but also take the initiative to avoid the congestion and achieve immediate minute class path optimization, accurate travel time of anticipation traffic accidents and save time and barriers notice path dynamic calculations, provide efficient driving experience, average monthly savings for users 10 hours of driving time. In addition, 3D holographic free exercise increases the waypoint navigation navigation, you can set the four destinations, to meet the driver a more comprehensive navigation needs. Navigation system also supports the phone with micro-channel address delivery function, by phone or micro-channel client service number issued to the vehicle navigation address all the navigation information will automatically appear in the automotive multimedia systems on.

Upgrade inkaNet 4.0 There Mirror link car-Internet phone function, in the car, cell phone screen can zoom mapped to the car screen, car, mobile phone or via the website delivers information to the remote end of the vehicle. In addition, inkaNet 4.0 also attentive service, maintenance reminders and vehicle abnormal alarm functions to facilitate consumer understanding of the real-time status of the car.


Each generation of the MG GT models, all with the classic era of fashion writing. 1965, MGB GT with first-class design, and both car-like comfort and sports car -like performance, stunning the world, was "Encyclopaedia Britannica" included becoming GT model. 1967, with a new 3.0L inline 6-cylinder engine , 193 km per hour speed, MGC GT became a wagon full of fun, not only won awards for a series of events large and small, the MG brand, also won by Royal collection of awards. The 1973 MGB GT V8, uses a V8 engine, the speed can easily reach the speed of 200 kilometers of track laid MG gene. 2014, I believe MG GT capable predecessors, with a strong power, excellent handling, intelligent vehicle technology, setting off a wave of new MG.

Windy wrote:

mg-zs wrote:Will look at that later.
Got bit distracted by that mirror

I was expecting Pat to make that comment first!

Windy wrote:Looks like GTs don't get under bonnet sound absorbent:

patpending wrote:

Windy wrote:

mg-zs wrote:Will look at that later.
Got bit distracted by that mirror

I was expecting Pat to make that comment first!

Didn't notice. As you can't see the shoes I can't classify it...

rantell wrote:has anybody noticed there is no mg gt in that picture those are mg3's and facelift mg6's

rantell wrote:oh whoops I get the joke now lol

patpending wrote:

Windy wrote:

mg-zs wrote:Will look at that later.
Got bit distracted by that mirror

I was expecting Pat to make that comment first!

Didn't notice. As you can't see the shoes I can't classify it...