GM, Ford, though well-known in the United States as a large-horsepower engine, is well-versed in China and Europe, where emissions are stringent. In a 2009 board of directors, GM decided to invest heavily in R & D and capacity layout of turbocharged engines.
As far as the trend is concerned, few car companies deny the arrival of a new energy era, but it must be admitted that there is not yet a mature new energy technology that can meet the needs of a large area of everyday car consumption. Whether it is a pure electric car or a hydrogen Key technologies such as fuel vehicles, batteries and reactors also need to be overcome in the lab.
Therefore, it is foreseeable that internal combustion engine power will undoubtedly continue to lead a relatively long period of time. Even under the pressure of the new energy trend, some car manufacturers who have the core engine technology will be able to conduct targeted innovations and seize specific and market segments, thus continuing The brilliant era of internal combustion engine.
Small displacement turbo engine is a good example.
In the past two years, the introduction of small-displacement turbine engines by various manufacturers has become quite commonplace. Even Japan and South Korea, which have always been self-priming and self-balancing, have launched their own small-displacement turbocharged engines by the end of 2016. However, As the 1970s, with Cadillac leading muscle and power horsepower big engine, GM's sense of smell of technology trends naturally more than any other car prices and then a little more sensitive.
In September this year, SAIC GM announced the introduction of a new generation of Ecotec twin-injection turbocharged engine, this engine has two power, respectively, 1.3T and 1.0T. In the top of the national energy-saving emission reduction design, this through technical improvements Small displacement turbo engine, both meet the displacement requirements, but also in the output power and motivation is full of passion and fun, it can be said to well cut the transitional market before the arrival of a new type of power.
The new generation Ecotec 1.0T twin-injection turbocharged engine
Traditional fuel truck in China
In the United States, where the shale energy is relatively abundant, the demand for automobile displacement is not strict, but in Europe and Asia where the oil price is high and the environmental pressure is high, the emission size will directly determine whether the emission standards are up to standard.
The European car emission standards effective in 2021 stipulate that the average emission of new cars in the European Union will not exceed 95 g / km by 2021. Requirements for nitrogen oxides and carbon dioxide emissions are particularly stringent and, according to preliminary estimates, failure to meet Standard, to BMW's current sales, for example, will face more than 30 million euros in fines.
China's policy environment is similar to that in Europe where engine displacement first affects the car's import excise tax.
Secondly, in the double credit policy promulgated by the Ministry of Industry and Information Technology in early September this year, the new energy points were directly linked to the emission of fuel vehicles. The production and sales volume of vehicles with a sales volume of over 50,000 vehicles needs to meet the 10% (2019) new energy points assessment , These new energy points can offset the negative points brought by the sale of fuel trucks.Therefore, before the new energy vehicles market of various automobile enterprises is not opened, it is undoubtedly crucial to reduce the displacement and reduce the annual assessment of new energy points.
GM, Ford, though well-known in the United States as a large-horsepower engine, is well-versed in China and Europe, where emissions are stringent. In a 2009 board of directors, GM decided to invest heavily in R & D and capacity layout of turbocharged engines.
For now, the return is very good.Generally introduced 1.5T engine in China, for example, has been carried in Angkwei Wei, Wei Lang, Wei Lang coupe (hatchback), the new LaCrosse and other cars on the maximum power 125kw, the maximum torque of 252Nm 1.5T engine, has obvious market advantages: both to ensure that the car consumption tax maintained at 3% of the stalls, but also to achieve ample power performance.This also ensures that the new LaCrosse in the case of power is not reduced (1.5T 2.4L compared to the previous self-absorption), you can explore the price, covering a wider population.
Today, GM's new 1.3T / 1.0T Ecotec twin-injection turbocharged engine, but also to ensure that part of the car with 1.0T displacement consumption tax probe to 1% .It is understood that the current GM Buick's new generation of MPV GL6 , Travel models Lang Lang, the new Hideo have been equipped with 1.3T Ecotec engine, and the price, almost all killed the bottom line of the same type of product.
Of course, a problem has to be considered, the price is down, the performance? This is also a common consideration, and many companies may have seen the trend of emission reduction, and proceed with the layout of related products.Therefore, GM has one more thing to do Technically ensure that this engine can handle the power needs.
How to improve the power of small displacement
According to titanium media understanding, GM's Ecotec dual injection turbo engine uses the current popular 3-cylinder machine.
In recent years, the small displacement 3-cylinder engine occupies an increasingly important position in the global engine selection list, the trend is evident, the advantages have also been verified:
1, small size, light weight, compact advantages;
2, less mechanical friction and the best single-cylinder capacity, as well as the inherent characteristics of the three-cylinder intake and exhaust - no inherent four-cylinder exhaust interference, making the three-cylinder compared with the same displacement four-cylinder engine has a smaller Turbine hysteresis with better low speed torque.
The common Ecotec twin-injection turbocharged engine is improved in terms of fuel economy, output power, etc., including:
1, power increase
It is understood that the new generation of 1.3T Ecotec twin-injection turbocharged engine can output the maximum rated power of 120kW / 5500rpm, maximum torque of 230Nm / 1800-4400rpm, up to 92.3kW / L power, even in the MPV GL6 mounted on the mid-speed acceleration of 100 km Only 10 seconds or so;
The 1.0T version of the maximum power of 92kW, at 1500rpm-5200rpm sustainable output of 90% of the peak torque to 2000rpm stable output 170Nm maximum torque, while the previous generation 1.5L engine you need 4000rpm in order to achieve the maximum torque of 141Nm.
What is the concept of this set of data, coupled with its own turbine engine, like playing doping, and now 1.0T power output is almost shoulder to shoulder with the 1.5L self-absorption, that is spent spending 1% consumption tax money, 3% consumption tax with the car. Do not underestimate this 2%, if a car declaration price of 100,000 yuan, then 2% is nearly 3,000 yuan.
2, weight loss and fuel economy
Compared with the previous generation 1.4T engine, 1.3T Ecotec engine weight loss of 25 kg, 15% power increase, fuel consumption decreased by 5%; and 1.0T engine last generation 1.5L engine weight loss 24 kg, fuel economy improved by 10% Fuel consumption per 100 km decreased by 0.5L (6-speed manual) and 0.8L (6-speed DCG dual clutch).
This set of data for fuel-efficient turbocharged engines is no longer just a politically correct, almost fuel-efficient turbocharged engine opened the door again.
Of course, it is worth mentioning that the naturally aspirated engine output power is usually constant, while the turbocharged engine has a smaller amplitude range.
If the adjustment involved and additional technology to change the final output power, in fact, the same turbocharger, you can cover a large power range, so as to achieve the same car product differentiation or cover different models.This for the common market Strategy and driving scale effect, are a big tool.
Bet later in the internal combustion engine era
Against the background of global energy conservation and emission reduction, both China and the EU will gradually reduce the emission requirements of fuel-efficient vehicles. However, there are only three ways for automobile companies to achieve their targets: reducing emissions, reducing weight and using new energy vehicles.
However, it is clear that lightweight materials, whether aluminum or carbon fiber, the cost of automotive materials commonly used in high-strength steel 5 times or even 20 times, and vehicle lightweight involves many aspects of materials, structures, using only new materials, not In the structure and after-sales system to improve, reduce emissions is not necessarily obvious results.
And the development of new energy vehicles is less bumpy.In the Bosch new car forces summit, Bosch China Xu Daquan executive vice president has said that 'battery technology, energy density in the past decade or so have not changed, has been a gradual change, It is also hard to have a sudden change in the next decade or so. Therefore, the internal combustion engine will still continue for some time. '
The GM early in the small displacement turbocharged engine investment and layout has undoubtedly taken the market opportunities, and now, the introduction of Ecotec engine, but also means GM in small displacement turbocharged key technology node A lot of breakthroughs.
The dual barriers of market size and technology have enabled GM to take advantage of the inherent economies of scale of the leader in the face of Honda and Volkswagen equivalent car prices. It undoubtedly took the lead in launching the dusk war after the internal combustion engine era.