Coquettish Rebirth

The global trend of turbocharging gasoline engines is completely inevitable.This is the influence of the Chinese market as a big market that attracts the world's attention, and Jia Hongjian sees it more clearly than anyone else.He knows more about large-scale industrial production, and what he pays attention to is that the more production, the lower the average cost.Even for the Japanese and American car companies that gave up turbocharged engines in the 80s, even if the car companies in these two countries are better at naturally aspirated engines, they have to be led by the Chinese market-as long as politics The situation has not changed much!For example, if the political situation between China and Japan changes, making Japanese cars almost impossible to sell in China, then Japanese companies may not have the motivation to develop turbo engines, but as long as the situation does not completely sever relations between China and Japan, Japanese cars If the company cannot continue to operate in China, then Japanese companies will still be pushed by such a domino to develop turbocharged engines.

What about our Huaxia Automobile?Let's just watch the international giants leave us far behind at such a new starting point?Of course not!Who says this turbo system is perfect?Nothing is perfect in this world!Otherwise, why did Japanese manufacturers give up turbocharging in the 80s?That's right!Such a thing as turbocharging has appeared before!It was 1905 when the patent was first applied for!In the early days, such a turbocharger was mostly used on airplanes and tanks. Later, in the 60s, General Motors tried to install it on cars!Then the turbocharged engine from the 70s was generously matched with the Porsche 911, and it suddenly became brilliant!

So why did Japanese manufacturers give up turbocharging?I have to say this again, after the turbocharger shined in the 70s, in the 80s everyone was doing turbocharging, including Toyota and Honda.But soon Japanese manufacturers discovered a problem-that is the technology of turbocharging, it is really immature!Although it appeared early.But in the early years, this turbocharged life has not been good.Even if it is used in racing cars in various track races, the racing cars are specially alienated for competitions!What does this mean?It is designed to run at high speed in a short period of time!So it doesn't matter even if the engine will be scrapped after running for dozens of hours, as long as you can get good results in the competition, long live!But it won't work if you put it on a civilian car!If a naturally aspirated engine is well maintained, let alone 100 million kilometers, 200 million, 300 million and 400 million kilometers are possible!But the early turbo can only run 15 kilometers!

Of course, when it shined in the 80s, the problem of short life of turbochargers has been overcome a lot, otherwise it would not be everywhere.Although the principle of turbocharging is to rely on the exhaust gas of the engine to drive the turbine to compress the fresh air that is about to enter the engine.Thereby increasing the output of the engine, but there is still a problem with this turbocharger in essence!what is the problem?To put it simply, this turbocharged engine, on the surface, looks like a horsepower similar to a naturally aspirated engine with a much larger displacement. For example, a 3.0t turbocharged engine may be more powerful than a 4.2t turbocharged engine. The naturally aspirated engine is not much different.But this is not much different when the turbocharger is used to exert its maximum power!Rather than when the turbocharger has not exerted its power!

There are conditions for this turbo to fully exert its power!Doesn't this turbocharger use the exhaust gas that has been burned in the engine to spray out to drive the turbine, and then compress the fresh air that is about to enter the engine through a series of things?Then the speed of the engine will definitely affect the speed of the turbine, because the faster the engine speed, the faster the exhaust gas will be discharged.Naturally, the faster the turbine turns, the greater the pressure of the compressed air and the more compressed air is supplied to the engine.In this way, the turbocharged engine can become more and more powerful!Assuming a turbocharged engine, the turbocharger starts to exert a good power at a speed of 2000 rpm, which means that before 2000 rpm, the power of the turbo is particularly small!So what does this mean?It means that at 3000 rpm, the performance of the 3.0 turbocharged engine is not much worse than that of the 4.2 naturally aspirated engine, but it is just starting at more than 1000 rpm and at low speeds.This is very much worse!It is basically equal to the difference between a 3.0 naturally aspirated engine and a 4.2 naturally aspirated engine!So it means starting with special meat!

After the start is particularly meaty, when the speed reaches 2000 rpm.The turbo started to exert its power, and the feeling of pushing back came out immediately, and the acceleration seemed to be fast.But in fact, at this time, it is just about the same as the 4.2 naturally aspirated engine!It's just because the start was too fleshy before, so the sudden comparison seems to be that the acceleration is particularly fast. This is just an illusion!And such a turbocharged engine, in addition to the starting meat.In terms of high revs, that also has a downside.Because when it reaches a high speed, for example, when it is above 1 revolutions per minute, the turbine rotates very fast, in order to protect the engine, compressor and other things.At this time, the manufacturer will open a thing called a bypass valve to actively deflate!So when you drive a car with a turbocharged engine, when the speed reaches a certain level, you can hear an obvious "chi" deflation sound, as if the plug of the inflatable doll has been pulled out!Then the engine started to visibly lose steam!What consequences did this lead to?As a result, if you want to climb a hill, when you open the first gear to pursue the maximum torque, the tachometer rushes up all of a sudden, the power comes up, and then it suddenly becomes discouraged and powerless!That is to say, in this more extreme situation, turbocharging is not as easy to use as natural aspiration!

Of course, such a situation is relatively rare. Generally, when extreme climbing is required, it is considered off-road, and ordinary family cars do not have to face this situation.But this also proves that turbocharging is not a panacea!At the same time, even if the shortcoming of turbo charging is overcome, it is still relatively delicate. At the same time, how to overcome the starting meat of turbo charging, and then high speed and impotence, it will take a lot of money to research, and it can be researched. A solution is still far away, so the Japanese gave up turbocharging!Besides, really speaking, adding a turbo to an engine doesn't cost a lot of money, does it?So don't the engine cost go up?Doesn't this violate the concept of Japanese manufacturers pursuing the ultimate cost?After all, this Japanese car rushed to the US market for various hot sales. The key is that the car is cheap and fuel-efficient!This Japanese car did not rely on high-end to sell well in the US market back then!They are cheaply positioned products, so of course they have to pay attention to the problem of rising costs!

Having said that, even if there is such a problem with turbines, even if they are just flaccid in the front and back, but now it is policy guidance!That policy is to limit the displacement!Although the emission limit is ridiculous, the government just wants to limit it-the government thinks it is good to reduce carbon emissions by limiting the emission, but the problem is that this manufacturer wants to use turbocharging to reduce emission At the same time, the motivation is maintained, and problems that the government cannot think of will arise!what is the problem?After general manufacturers use turbocharging, anyone with a bit of brains will adjust the engine so that the turbo will play a role in typical daily use environments, such as running at high speeds!What's the use of a turbo if it's not maxing out in typical day-to-day use, right?So this creates a problem. When the 3.0 turbocharged engine is fully exerted, its power is not much worse than that of the 4.2-liter naturally aspirated engine. Is it possible to expect him to eat less?A large-displacement naturally aspirated engine is replaced by a small-displacement turbocharged engine, which is equivalent to replacing the large bowl that this person eats with a small bowl. If the bowl is small, will there be less food to eat?Small bowl can eat a few more bowls!

Originally, when turbocharged, the inhaled fresh air is pressurized, and the engine needs to inject more gasoline to mix and burn accordingly, so a true turbocharged engine is not necessarily more fuel-efficient than a naturally aspirated engine !So the final result may be that the country wants to force companies to replace the 4.2-liter naturally aspirated engine with a small displacement to reduce carbon emissions and protect the environment.As a result, after switching to a 3.0 turbocharged engine, the fuel consumption may not be worse than that of a 4.2-liter naturally aspirated engine, and sometimes even more fuel consumption!Wouldn't the idea of ​​reducing carbon emissions come to naught in this way?Not only did the idea of ​​reducing carbon emissions come to nothing, but there were other hidden dangers - this turbocharged engine has a problem compared with naturally aspirated engines, that is, the increase in particulate matter emissions!That is, it may increase the smog!

Just think about how many years there was smog in the northern part of the country before the country promulgated such a "emission tax".no?In the past, there were sandstorms in the capital because of weather problems, but after 08, why did smog gradually appear?Although there is no detailed information to show that it is a problem with the turbocharged engine, Jia Hongjian thinks that there is at least a part of the problem with the turbocharged engine, right?Since there are so many problems with turbocharging, should Huaxia Auto follow up?If we follow up, should we spend money on turbocharging research, or spend money to buy some declining car companies in Europe and America to absorb other people's technology?What will we do if we don't follow up?You can't be thrown off by foreign companies, right?

how to do?Easy, who said reducing carbon emissions... has to be turbocharged?Isn't it possible to use a hybrid... or even a pure electric vehicle? (To be continued..)