As the world's top auto race, F 1 Racing represents the highest technical level in today's auto industry. Some senior car fans believe that F 1 racing car is the product of the fuzzy boundary between technology and alchemy, and its technology is ahead of civilian car 10 years.
Although there is a big technical gap between them, F 1 racing car still leads the technical development direction of the automobile industry, and it is also the place where civil automobile technology is bred and experimented. Mercedes-Benz is a pioneer, and has transformed many top racing technologies into civilian use.
As we all know, AMG is very good at manufacturing engines, but their "main business" is often those engines with large displacement and multi-cylinders. When A45 was born, this "buddy" from Affalterbach showed us its talent in small displacement four-cylinder engine for the first time.
As the first four-cylinder engine launched by AMG, the original intention of M 133 is a small displacement and high performance engine. From the ultra-low compression ratio of 8.6: 1, it can be seen that M 133 is by no means a small-displacement supercharged engine that pursues fuel economy.
This engine is based on a 2.0-liter four-cylinder turbocharged engine codenamed M270, but they can share some engine accessories, such as generators, compressors, starters, etc. There are not many similarities.
Just like a knight-errant, strong martial arts are bound to be inseparable from a tough body and extraordinary bones and muscles. Therefore, the main body of M 133 engine is made of all-aluminum material, and the strength of M 133 cylinder block can be improved by replacing die casting with sand core casting and adding more high-strength metal elements.
To be on the safe side, M 133 also adopts a more rigid closed waterway design, which can withstand the test of huge cylinder pressure. In order to cooperate with the engine block, the internal piston, connecting rod, crankshaft, camshaft and other components are designed, strengthened and optimized respectively.
The cylinder wall of M 133 adopts the cylinder wall coating technology called Nanoslide by Mercedes-Benz, which is protected by more than 40 patents, and even uses Nanoslide to reduce the internal friction of Mercedes-Benz F 1 racing engine.
Nanoslide cylinder wall coating technology makes the cylinder wall have a mirror-like smooth surface. The ultimate goal of this is of course to reduce friction and have very high wear resistance.
With strong "hardware support", engineers began to explore the maximum adjustment between performance and stability. For this reason, the engineer chose a large-size turbocharger and adopted the double scroll technology. Theoretically, the maximum boost value can be as high as 2.8bar (the turbocharging value of ordinary vehicles is 0.8- 1.0bar), but for the sake of stability and durability, the boost value is finally adjusted to 1.8bar.
What is double vortex tube technology? The cylinder ignition sequence of an in-line four-cylinder engine is 1-3-4-2. The four exhaust manifolds are divided into two groups. One group is responsible for the exhaust of cylinders 1 and 4, and the other group is responsible for the exhaust of cylinders 2 and 3. Then the two groups of exhaust manifolds are connected to one exhaust manifold, that is, the 4-2- 1 exhaust structure, and finally the turbine is driven.
In this way, due to the interference between the four cylinders, the exhaust of each cylinder is independent, which makes the exhaust more efficient and the turbine propulsion smoother.
Many friends will ask, why can such a low compression ratio of M 133 produce such high power and torque? This is also due to turbocharging, the air density before entering the cylinder is very high, the initial pressure reaches a certain level, and the temperature also rises. If the natural suction compression ratio is adopted (generally around 1 1), knocking is bound to occur.
Therefore, it is necessary to determine the engine type while looking at the compression ratio. The supercharged intensity of M 133 is as high as 1.8bar. In addition, due to the advantage of warm initial pressure, the supercharged engine can obtain better thermal effect and stronger output after compression combustion.
After careful construction by the development team, this engine with light weight, flexible operation, corrosion resistance, high temperature resistance, high pressure resistance, strong heat dissipation and coordinated rigidity and toughness was born.
At this point, the small displacement engine also has the power output of the original large displacement engine, and it is more environmentally friendly and economical. Don't think that replacing a small displacement engine is a simple match, just like F 1 racing car. Although the number of cylinders and displacement have been decreasing, cars are getting faster and faster.
Of course, people will not only take M 133 home, but AMG will accompany you and your relatives and friends? A45、AMG？ The CIA? 45、AMG？ GLA？ These three "big toys" out of the chart all have a calm and irritable M 133 "heart".
Even today, their performance and potential are still eye-catching. Their dual personalities enable the "chivalrous men" who control them not only to experience super stability, but also to be crazy at necessary moments like Liangshan heroes.
This is M 133, which is the pride of Mercedes-Benz and the pride of mankind. But do you think this is the limit of a 2.0-liter four-cylinder turbocharged engine? The progress of the times is much faster than we thought, and AMG engineers are never satisfied with the status quo!
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.