In the era of self-media, it is an individual who can evaluate the car. There are many people who can write articles, and not many people really understand technology. I saw such a question on the Internet: Japanese engines are very advanced, but dare to sell to any country, why not be afraid of technology leakage? So a group of so-called "automotive authors" began to perform, answering along the question: give you drawings you can't copy, can take apart the assembly can not go back, the repairman said how good the Japanese engine is, our machining technology is not good, the Spirit of Japanese craftsmen ...
If you feel that what they say makes sense, then you can be sure that you are also a layman. How many pounds does the engine of the Japanese car have? Compared with domestic production, what is the level? Isn't it a joke that today I'll take a plate of 20 years of experience in repairing cars to take a repairman as a technical endorsement? Here, I also advise some car critics not to just quote the brainwashing training materials of car companies as technical information, and learn to do some dry goods in a down-to-earth manner.
First, Toyota: no engine available
In the past decade, Toyota has injected heavy pressure on hydrogen energy, monopolized a series of patents for hydrogen fuel cells, and believed that after THS hybrid, it can be seamlessly connected with hydrogen energy, and the result was a miscalculation. Hydrogen energy vehicles rely on large-scale infrastructure construction, now China and the United States, and even Europe, do not play with it, now have to disclose the relevant patents, hydrogen energy did not play, pure electricity, plug and mix and can not keep up with the mainstream, so that the situation is very embarrassing.
Pure trams do not need engines, but the speed of pure electricity is slow, long-distance travel is a short board, it is difficult to get a fundamental solution in the short term, and can only play a market segment to solve part of the travel needs. The range extender and plug-in hybrid are currently more suitable solutions, short-distance charging, urban when the pure tram is opened, long-distance travel can use oil. Although it is not zero emissions, it effectively reduces emissions. Range extenders or plug-in hybrids require an internal combustion engine. Therefore, our domestic brand has not thrown away the research and development of the engine.
The hydrogen fuel cell, although the essence is also a range extender, but it does not use an internal combustion engine to generate electricity, it does not need an internal combustion engine. It is precisely because of this that Toyota believes that it is meaningless to invest in the internal combustion engine, so that now, there is a break.
In fact, among them, there are also national-level games, Toyota used to have engines, such as the earlier Land Patrol, Sequoia and other large blocks used 4.0L self-priming V6, 4.6L self-priming V8, and 5.7L self-priming V8, I think it was also able to get my hands on it. However, with the increasingly stringent national emission standards and the restrictions of the double credit policy, these large-displacement engines cannot be used. Now Toyota belongs to the embarrassing situation of no engine available, in the high-end model, it can only use 2.5L + THS hybrid, at most it is 3.5L self-priming plus THS hybrid power combination, the actual performance has been difficult to support the price, and only through continuous marketing to brainwash consumers to increase the sense of identity of the product.
More than 200,000 Camry and Asian Dragon began to use 2.5L self-priming + THS hybrid, 300,000-level Highlander and Crown Land release used 2.5L self-priming + THS hybrid, and 400,000-level Xena also used 2.5L self-priming + THS hybridization. Even the million-level Alpha gives you 2.5L self-priming + hybrid. That is to say, more than 200,000 models, Toyota 2.5L self-priming + THS hybrid is over. It wasn't until Lexus LS that I was willing to give you a 3.5L. If its technical reserves are sufficient, 500,000 levels give you a 3.0T, and a million levels give you a big V8 of 4.0T.
The power is not good, the root cause is still the technology is not good! Veranda plug-in version, zero hundred acceleration can reach 5.92 seconds, very quickly. However, 8 years ago, BYD's 100,000 Qin DM had this level. Generation Tang is 4.9 seconds. External discharge 1500w as a promotional selling point, BYD Tang achieved external discharge 3300w 7 years ago, and the new car reached 6Kw. Don't say that there is not enough motivation, it is like money in a man's pocket, you can not spend it, but you have to have! Especially models with more than 200,000
Toyota, a 3.5L self-priming, a 2.5L self-priming, but also oil emulsification increased. The 2.0T on the old Highlander is not to mention, and it is not used to burn the oil. The 8AR itself is not good, 220Ps horsepower, the maximum torque of 350Nm, but also to drink 95 oil, domestic cars plus 92 seconds to kill it abounds. What is there to brag about at this engine level?
It is the most widely used 2.5L self-priming - it is a representative of Toyota engine technology, right? Just can use the new Highlander and the new Trumpchi GS8 to make a comparison, Toyota sold the THS hybrid to GAC, Highlander and GS8, are the fourth generation of THS hybrid, the weight of the two cars is also similar, fuel consumption, GS8 and Highlander are exactly the same, are two-wheel drive 5.3L, four-wheel drive 5.8L, but what about power? Highlander Zero Hundred accelerated by 8.27 seconds, while GS8 Zero Hundred reached 6.9 seconds. In the case of consistent fuel consumption, the 2.0T GDI of GAC is faster than you, and it is faster than 1 second! This is the gap that is open to the eye! Still think Japanese engines are advanced?
According to internal sources, Toyota wants to buy GAC's engine, and has talked about the specific details, but it was denied by the Japanese executives, on the grounds that it was afraid of affecting the brand image. This news is unconfirmed, but combined with the specific performance of the two engines, I really don't feel like it is untargeted. Indeed, in the eyes of some laymen, Toyota still retains a technologically advanced image.
In addition, the friends who are ready to raise the bar, Toyota's sports car SUPRA, 2.0T and 3.0T engines are purchased from BMW, yes, it is the B48 that burns the oil, from the practical point of view, it is really not as good as purchasing GAC. However, in the eyes of some Toyota fans, Toyota can buy BMW's engine, can not buy GAC's engine...
In addition, Toyota's newly developed 3.4T V6, with a maximum thermal efficiency of 37%, is mounted on the Land Cruiser South African version, which is the emission standard of Euro V, and it is not clear whether this engine can pass the national six b.
Second, Honda: The problems continue
Honda is known as buying an engine to send a car, some people understand that the engine is good, and I can only think that the configuration, safety, sound insulation and other aspects of the car are too poor!
In fact, like Toyota, Honda's engine has also been advanced, as early as the 70s, people used CVCC technology to achieve layered combustion. Then in the late 1980s, people mastered the electronically controlled variable valve lift, which is the VTEC system. I said that at that time, the Japanese engine technology was advanced, and I really didn't lift the bar. But now, the engine technology of direct injection, high-pressure injection and variable valves in the cylinder has become the standard, the compression ratio is higher than one, and the thermal efficiency is also what you catch up with. A lot of technology superimposed, let's look at the specific effect, the earth dream engine looked good when it came out for 16 years, the highest thermal efficiency is about 40%, but now, BYD, Geely have done 43%, GAC moment wave power is also 42%, which can show that you are advanced?
Moreover, Honda's Earth Dream series, as a new attempt, is not strictly a success. Turbocharging it can not be played, and now it has been jokingly called "carbon accumulation dream" by car repairmen. Engine carbon deposition is inevitable, but the carbon deposition of the earth dream is relatively much more serious, and not cleaning up for a long time will lead to a decline in power, engine shaking, fuel consumption increase, and even light engine failure lights.
On this, there are still people to wash the floor, saying that the quality of domestic gasoline is too poor, the air quality is too poor - there are more engines without problems, everyone burns the same oil, how can others be okay? The main problem of carbon deposition in the earth's dream is that the engine design is unreasonable. At low speed, the effect of intercooling heat dissipation is poor, resulting in an increase in the intake temperature, and the engine can only inject oil to cool down, so it has been in a state of oil,Insufficient combustion, and the result is that carbon deposition is abnormally rapid.
For example, the 1.0T "wet timing belt", this designer is also a talent. The timing belt is soaked in the oil, and there will inevitably be wear and tear for a long time, resulting in debris and blocking the oil circuit. When the engine failure lights on, the oil lamp also alarms, there is no cure, this is a typical design defect.
Oh, and forgot to say, the problem of increased emulsification of the oil is also a defect in the engine design. Originally a Honda CRV, it was later discovered that Toyota was also a virtue. Of course, now Honda has solved it by brushing the ECU - the price of avoiding increased emulsification of the oil is increased fuel consumption. Toyota simply lay flat and said that it was okay to increase the oil.
Buying an engine to send a car, in the end it becomes buying a problem engine, sending a car with poor sound insulation, low configuration, and poor safety.
Third, Nissan: Nissan that no longer has the technology
One thing to say is that Nissan's VC-turbo variable compression ratio technology is still quite advanced. The compression ratio does not need to be explained, and it is impossible for anyone who can read this not even understand this basic concept. High compression ratio is the most common means of improving the thermal efficiency of the engine - it is also easy to understand, the same oil and gas mixture, compressed to the size of a tennis ball to ignite the energy of the explosion, certainly not compressed to the size of a ping-pong ball, burst of energy. However, high compression ratios also bring a series of problems, such as greater pressure in the cylinder and the need for higher grade gasoline to prevent knocking.
Variable compression ratio, you can adjust this problem very well, when the pressure in the engine cylinder is small (low power output, air intake, fuel injection are small), at this time can improve the compression ratio, the pursuit of higher thermal efficiency to seek fuel saving. The turbine intervention requires a large power output, and when the pressure in the cylinder is large, the compression ratio can be reduced to suppress the knock.
This technology was actually first shown by Saab at the Geneva Motor Show in 2000, called SVC. Later, PSA and BMW worked together to develop an evolved version that could control the compression ratio between 7:1 and 20:1. However, I don't know why there is no mass production, it may be technical reliability or cost problems. Nissan has been persevering in this field and has finally achieved mass production. The 2.0T engine on the Tianlai and Infiniti QX50 uses VC-turbo variable compression ratio technology. In fact, X-Trail's three-cylinder engine is also, but the three-cylinder...
How do you rate Nissan? Is VC-turbo powerful? In fact, at that time, many car companies were studying, but many gave up for various reasons, and Nissan insisted. At the time, the technology Nissan deserved! It's just that the glory belongs to the past. This is the technology that has been completed in 2008 and tested, is it still advanced?
Other manufacturers have stopped the development of variable compression ratios, is it really because it is difficult? In fact, many OEMs have announced that they have stopped the research and development of internal combustion engines, why? That's not the future! Take Nissan's variable compression ratio technology as an example, what is its effect? Save fuel! What is the effect of the universal variable cylinder technology? Also fuel efficient. But is there a hybrid fuel economy? I don't use your technology, but it's more fuel-efficient than you — so where is your technology advanced?
In fact, judging from some so-called new cars and new technologies recently released by Nissan, the foundation of this car company has been hollowed out. We all know that the three-cylinder engine is not welcome, why does Qijun still have to force the three-cylinder? Say double integral, say that emissions are all pull, with three cylinders to solve the double integral problem, itself is a technical performance of donkey skills! What has been blown with a thermal efficiency of 45%, or even a 50% thermal efficiency of e-POWER? Shame on you, is it achieved? On the castration of the battery range, the power is not as good as DM-i, can not be pure electric driving, and there is no DM-i fuel saving.
Mazda: Technical paranoia
Mazda gives me the feeling that the Japanese system, which is the least like the Japanese system, the tone and style of the car are more like the legal system: the technology is general, but the material is more conscientious, the safety is high, and the control is outstanding, which coincides with the French car.
Speaking of Mazda's paranoia, I'm sure there won't be too many people who will object. Paranoidly clinging to this self-priming, paranoidly playing with the rotor engine, paranoidly insisting on the sporty style, and then paranoidly studying compression.
Mazda is worthy of respect, at least, people do not cut corners, at least people have their own pursuits. At present, there is a Japanese car, there is indeed nothing worth buying, Mazda is not cost-effective, but you buy Mazda, I can understand this feeling.
But then again, when it comes to the advanced nature of technology, it is obvious that those who deviate are not far advanced. Mazda's Chuangchi Blue Sky engine has a maximum thermal efficiency of 43%, which is worth affirming. However, it was also overtaken by BYD and Geely. The key is that BYD combined the DM-i system with a 43% thermal efficiency Snap cloud engine, and people have come up with a blockbuster model with zero hundred acceleration of 7.9 seconds and fuel consumption of 3.8L. And Mazda, with self-priming and mainstream turbocharging, it is clear that the high thermal efficiency does not take advantage of the slightest advantage.
Take Artez as an example, 2.0L self-priming engine + 6AT, in fact, the power response in the fuel car is very good, the control is also stable, but what about the performance? Zero hundred and 9 seconds, fuel consumption of 7, that is, a level of 1.5T. The dispute between self-priming and turbine has been settled ten years ago, saying that self-priming is equal to lagging behind is a bit absolute, but saying that self-priming is advanced... Do you look at the new engines that have been produced in the last 5 years, and do they have self-priming? (except hybrid)
First of all, the rotor engine was not invented by Mazda, and even Mazda was forced to choose the rotor as the technical route. In the 1960s, the German NSU company Wonkel invented the rotor engine, which was patented by Mercedes-Benz, GM, PSA, Toyota, and Nissan. Mazda was only one of them, and at that time, because it did not have its own core technology, it was afraid of being annexed, and it was hard to do it.
Here science popularization, the rotor engine has its advantages, mainly is small size, large power, less parts. Compared with reciprocating engines, it does not have crankshafts, valves, camshaft timing chains or anything like that, and the number of revolutions can be pulled very high. For example, Mazda's RX-8, with a displacement of 1.3L, can burst out 231 horsepower. What is this concept? The 1.3T Yinglang, with a turbine, has only 163 horsepower. 2.5L self-priming Mazda, only 192 horsepower.
The reason why the rotor engine withdrew from the stage of history is not because it is too strong, but because it has a fatal injury. The first is high fuel consumption, and the second is poor stability. The high horsepower of the rotor engine is based on the high number of revolutions, and the high number of revolutions, fast work, will inevitably not be able to ensure the full combustion of gasoline, cost oil, and emissions are difficult to meet the standard. In addition, the wear of parts with high rotational speed is also more serious, the life is short, and the stability is not suitable for civilian use. In fact, the most suitable place for the rotor engine is the track, but the rules of the game are not made by them.
The rotor engine can be seen as a kind of R&D spirit of Mazda, but now, it cannot be used as a proof of technological advancement.
Five: Others
Mitsubishi: Basically, in addition to stability and cheapness, there are no other advantages, and domestic cars are still using Mitsubishi engines, indicating that they do not have their own core technology.
Subaru: Play modification buy Subaru I can understand, 2.4T, 2.5T horizontal opposing engine, has a high playability, the modification limit is also relatively high. However, the family car buying this brand can basically be attributed to not understanding cars. Horizontally opposed engines can indeed improve control, but the engine cylinders are biased and burning oil is also difficult to solve. This is not Subaru's unique technology, but everyone does not play, only subaru and Porsche sports cars are used.
Suzuki: The whole series is the level of Fit, and it can build some small, cheap cars, even if it does not withdraw from China, it will inevitably be replaced by new energy. It has nothing to do with the advanced dime.
In fact, the engine (internal combustion engine) itself is backward, its thermal efficiency is limited, and even advanced technology cannot be greatly improved. Now the thermal efficiency of the highest mass production car engine is about 43%, 45% is theoretically achievable, but it can not reach the threshold of 50%. You use 100 advanced technologies, you are advanced to the sky, it is 2% stronger than me, but because of this 2% how much research and development costs do you have to pay? Reflected in the vehicle, you have a heavier throttle, and the 2% of the fuel saved is gone! Why have countries announced that they will stop the research and development of the internal combustion engine - there is no future!
In addition, even Ward magazine in the United States, which has been selecting the top ten engines before, has now changed to the top ten power total. Because the rise of hybrid and electric can no longer be ignored. BYD's 1.5L self-priming engine, if equipped with a gearbox, even if it has a thermal efficiency of 43%, it is difficult to have a good performance. However, with the EHS hybrid system, the output is stabilized by the motor, taking into account the power and smoothness, which is the current level that pure fuel vehicles cannot reach in any way.
Others will say: Japanese cars make you worthless, how many times people have won the Ward Ten Best - this can only deceive the layman. Ward's top ten engines, themselves, are a selection column of the "world" of an American automobile magazine, and that is all, not authoritative at all. Moreover, it is only for the North American models on sale, which is also the reason why Korean and Japanese have been listed many times, and none of our domestic products have been on the list. If the selection scope is global, then BYD DM-i, Great Wall DHT, Chery DHT, Geely Thor Hi · If these hybrid systems are not on the list, they can only be said to be blind.
In addition, some people will say that you said that domestic engines are so cattle, why are they not sold abroad? Reason to think about it yourself, a family selling buns in front of your home, the neighbors have eaten for twenty years, and the new one, even if it is bigger, cheaper and tastier than this bun, may not be able to quickly occupy the market. Moreover, if you look at Huawei, European and American countries can let The Korean and Japanese systems fill their low-end markets, but there is no reason for us to share that piece of the pie.
In fact, our domestic cars have been exporting, Geely, Chery, Changan, Great Wall, in Southeast Asia, the Middle East, Africa are selling well, BYD, Weilai into Europe, 300,000 Tang EV sold in Europe to 500,000, has become Panama's Libin car, the first two days to receive the British royal family is also on the news, why not feel proud of it? Is it interesting to lick the Japanese system?
We cannot deny that for a long time in the past, Japan's engines were very advanced, at least much stronger than our domestic production. Especially in our reverse research and development - what is reverse research and development, to put it bluntly, it is a cottage, dismantling people's engines, building their own parts and assembling themselves. You don't have drawings, you don't know the standard of each part, you don't know the assembly process, that's definitely not OK! Not because the Japanese engine is advanced, but because it is contrary to the laws of research and development. In turn, our own engines, without drawings, were copied by the Japanese, and they couldn't play with this process. Do you think our cars have not been dismantled abroad? When BYD Tang first went public, Toyota imported 5 vehicles in one go, and the United States did the same. At that time, 200,000, four-wheel drive zero hundred acceleration of the medium SUV of 4.9 seconds, they could not build!
This problem itself carries a trap, and many of us, who have been deceived by the Japanese marketing trap for many years, now that our heads have been washed, we have little ability to think independently. Just think, it's just the engine of a civilian car, we can't build it in a year, we can't build it in two years, can't we build it in ten years? Talk to me about technology, talk to me about technology, we Shenzhou, Chang'e, Jade Rabbit, Beidou, satellite rocket manned spaceflight can be early, can not build a car engine? Friends who can see this article, think about it, why when you mention our space industry, you are enthusiastic and proud of being a Chinese? Why is it that when you mention domestic cars, you are full of disdain, thinking that we will not be able to catch up with Japan and Germany for another 20 years? Think about it, what's the problem? What makes you think we can build airplanes, rockets, spaceships, but we can't build a car? What is it? Just such a brainwashing problem, and some irresponsible, unlearned car bloggers!