Displacement is actually the volume of all cylinders. The larger the cylinder, the more gas can be burned theoretically, thus providing more energy and power. As we said in the video before, the power of a car is not strong, mainly depending on horsepower. In fact, the horsepower of a small-displacement car is not necessarily small. Extreme point: F 1 racing car, not 60L engine, but 1.6T engine, with horsepower reaching 1000.
The 4.0T Mercedes-Benz AMG GTR has only 585 horsepower. You see, this is not necessarily a problem of displacement. For example, the 2.0T Mercedes A45 has 387 horsepower, while the 3.0T Audi A6L has only 340 horsepower, which is a little less than the 2.0T Mercedes A45.
From the engine's point of view, displacement does affect horsepower.
Although the displacement is small, the horsepower can be improved in other ways, so you see, from the engine's point of view, the small cylinder volume can make up for the shortcomings of small displacement and improve the horsepower in other ways.
There is a paper in the magazine Automotive Practical Technology, which mentioned the important indexes to measure the engine performance. There are four ways to improve engine horsepower: increasing air intake, increasing speed, improving efficiency and improving the combustion process of mixed gas.
Our common supercharging, that is, turbocharging and mechanical supercharging, have similar functions although their implementation principles are different. There are also papers in the magazine Manufacturing Technology and Machine Tool, which mentioned the advanced manufacturing technology of modern engines.
Turbocharging technology is to compress fresh air and send it to the cylinder of the engine, so as to improve the air density and air charge of the cylinder of the engine, thereby enhancing the power, which can generally increase the horsepower of the engine by 20% to 50%. Even if the engine displacement is small, the power is not necessarily weak by using supercharge technology. For example, the Fista of 1.6T has a maximum horsepower of 204 horses. However, the maximum horsepower of 2.5L naturally aspirated Mazda Artz is only 192.
Different engine tuning preferences
In addition, different engine tuning preferences are also different. A car with a small displacement may have stronger power if it is set up by exercise. Taking Mazda as an example, the ultra-high compression ratio of SKYACTIV-G engine, 13: 1, was created to improve combustion efficiency and favor fuel-saving adjustment.
Therefore, the actual average fuel consumption per 100 kilometers of the current 2.0L Mazda 3 is quite low, 7.62L is good, but the fuel consumption and power are difficult to meet, and it saves fuel, and the maximum horsepower is only 158. On the other hand, Toyota GT86 is obviously a dry express train with a 2.0L naturally aspirated engine, but it has a maximum horsepower of 200 horsepower and a FA20 engine.
From the car's point of view, the car's photodynamic performance will be better.
Speaking of the engine, from the perspective of the whole vehicle, even if the engine output of a small displacement vehicle is slightly weak, its actual power performance will be better as long as the vehicle is lighter.
There is a paper in Heilongjiang Science and Technology Information magazine, which mentioned the influence of aluminum alloy parts on vehicle weight reduction. Vehicle weight reduction can accelerate vehicle performance, but it will be faster. Super Street, an American car website, did an experiment on a Civic Si, and found that every 8.25kg of vehicle weight loss can increase 1 horsepower in disguise. In other words, the greater the thrust-to-weight ratio, the better the acceleration performance.
Small displacement does not mean that the power of the car must be weak.
Generally speaking, a small displacement does not mean that the power of the car must be weak. That is to say, in addition to the displacement, engine technology and adjustment preference, in fact, the weight of the car body also has a great influence on the power, which will lead to a small displacement and a greater horsepower or effect.
What is the displacement of the family car?
A car with a small displacement is not necessarily weak in power, is it? Then what is "weak"? What is "strong motivation"? What is "enough strength is good"? Didn't the friends around me say, "We don't have ... anyway, don't do this, just buy enough."