It will be very different after it is made in China! This is Germany's 1.4T, which is called golden right.

For the public, we are most familiar with this 1.4T+DSG powertrain, which is officially called "Golden Power". But in fact, LaVida, Bora and Santana are still selling the 1.5L self-priming version. In the domestic market, EA2 1 1? 1.4T gasoline engine is not far from the European version in service. Today, let's take a look at domestic EA2 1 1? 1.4T What parts are missing? By the way, what about EA2 1 1? Will it serve in the eighth generation golf? 1.5T engine.

▲ What is the difference between domestic 1.4T low/high power?

Volkswagen EA2 1 1? 1.4T engine is produced in three domestic factories, namely FAW-Volkswagen Chengdu factory, FAW-Volkswagen Changchun factory and SAIC- Volkswagen Shanghai factory. Depending on the adjustment, this engine has two versions: 13 1 horsepower and 150 horsepower. Of course, apart from the software, different versions of peripheral hardware such as coolant pipes, radiators, brackets and fans are also different, which are basically made in China, and the proportion of imported parts is the lowest among all similar joint venture vehicle engines (I wonder if there is any).

It should be noted that 1.4T low power version (CSTA) is not necessarily worse than low power version (CSSA). In fact, the peak torque of the former comes earlier, reaching 225Nm at 1500rpm, while the latter reaches 250Nm at 1750rpm. Really, in such low-weight cars as LaVida and Tango, urban commuting is actually a low-power version of 1.4T, which gives people a lighter feeling.

▲ Europe 1.4T What else?

Sagitar is an overseas version of Jetta.

EA2 1 1 Service in Europe? There are many versions of 1.4T, but the differences between different versions are much greater than those of domestic low/high power engines, but they are all "complete" than domestic 1.4T engines without exception.

There are many kinds of "bumps" on the camshaft of closed cylinder system.

For example, the 1.4T engine of the seventh generation golf is equipped with ACT cylinder changing technology, which can be changed into two cylinders to work at constant speed cruise, saving fuel consumption. This system is based on Audi's AVS variable valve lift technology, and the timing and size of valve opening are adjusted by adding an additional mechanism on the camshaft. Variable cylinders keep the valves of two-thirds of the cylinders closed, and turn off their injection and ignition systems to make them enter the idle state.

Is Volkswagen cool? 1.4T mechanical+turbo double pressurization

Then, Volkswagen Scirocco, which has stopped production, added a mechanical supercharging system to its 1.4T engine, and the maximum power also rose to 160 horsepower. The turbocharger of this 1.4T engine adopts a series mechanism. When the low-speed turbine lags behind, the supercharger directly connected with the crankshaft can provide pressure for the near future, thus further improving the intake pressure and response speed.

There is no stratified combustion in China.

Finally, the European standard EA2 1 1? 1.4T engines all adopt stratified combustion system, and only in-cylinder direct injection is available in China. The so-called stratified combustion is a more efficient gasoline combustion mechanism in which ECU and injection system work closely together. Under low load condition, only a small amount of gasoline is injected to realize lean combustion (high air-fuel ratio) and improve fuel economy. And domestic EA2 1 1? The direct injection system of 1.4T will only adopt the fuel injection procedure of uniform fuel injection at any throttle opening.

EA888？ Electric injection+direct injection

I have to mention it in EA888? The dual injection system used in the 2.0T engine, which combines manifold EFI with in-cylinder direct injection, has little to do with stratified combustion, but different injection modes are adopted under different working conditions, which still plays a similar role to stratified combustion. At idle speed, electric injection is used to achieve the purpose of rapid preheating, at low load, accurate direct injection is used to ensure fuel economy, and at high load, both of them are used to emphasize large torque output.

▲ About the new EA2 1 1? 1.5T

It is worth mentioning that, starting from the overseas version of the 7th and 5th generation golf, the German Volkswagen began to completely change the brand-new EA2 1 1? 1.5T inline four-cylinder turbocharged engine. And the domestic medium-term golf, even the new Jetta, is EA2 1 1? 1.4T engine.

Miller cycle can achieve a thermal efficiency of 37.5%.

As a new generation of power for Volkswagen family cars, what are the improvements compared with 1.4T? In addition to TSI and ACT variable cylinders, variable turbine geometry (VTG) and Miller cycles are added to this 1.5T engine. This "black technology" has appeared on Porsche horizontally opposed engine before, and the guide vanes inside the turbine are adjustable, which means that the turbine itself can adjust the intake pressure according to the engine working conditions. Low-speed simulation of small inertia turbine improves response speed, and high-speed simulation of large diameter turbine ensures power output.

Variable turbine geometry

In addition to the upgrade of the engine itself, the eighth generation Golf 1.0T/ 1.5T is equipped with light hybrid power, named "eTSI". The application of motor can maximize the recovery of braking/sliding energy (charging the battery with deceleration kinetic energy). Secondly, when the engine is completely turned off, the motor can also ensure the vehicle to slide at a constant speed under low load. Finally, the motor can also be the guest star of the traditional starter, because it has higher power and can realize more efficient automatic start-stop function.

Overseas versions 1.0T/ 1.5T are all lightly mixed.

As for the domestic market, news came out at the end of 20 19, and the FAW-Volkswagen Chengdu factory has started to put this new engine into production. After serving, I guess it will be applied to the domestic eighth-generation golf for the first time. In the future, sagitar, Tanco and other models are also expected to be redesigned. Is it still intact? Personally, I don't expect much.

▲ Summary:

Speaking of the topic of domestic emission reduction of Volkswagen engines, I know that many people will spray domestic oil products. Then please have a look. It is also a joint venture vehicle. Toyota has achieved double injection, Nissan has achieved double cycle, GM has achieved variable cylinders, Mazda has achieved high compression ratio, and Honda has achieved variable valve lift. Most of the above only need to add 92 # gasoline. Why does the public say that domestic oil products are not good?

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.