Why Japanese cars are rubbish is clear at a glance.

To explain this, I found a picture from Toyota's website and posted it here. There are some explanations in the picture. I let everyone know why Toyota added an iron piece, so I can understand whether Toyota is fooling its consumers by modifying this thing, or whether it can really solve the problem. As for the accelerator pedal, it can be seen that the two kinds of accelerator pedals of Toyota (one is made by CTS Company of the United States and the other is made by Denso Corporation of Japan) are similar in appearance and seem to be the working principle of interchangeable CTS accelerator pedals. Sorry, I wrote it wrong. The "Cao Li" in the picture should be "in the trough". This design was made by Toyota's own engineers. Don't blame CTS. Its fatal place is that there can be no gap between A and B, so it is easy to "stick" together. Why is there no problem with the accelerator pedal produced by CTS for American, German and other automobile manufacturers? Please look at the explanation behind, and you will understand that after Toyota recalled 9 million cars, it added an iron map to that place. You can see where the iron sheet has been added. This job is too easy for the enemy. The cost of iron sheet is very low. Toyota calculates the cost. Relatively stingy. The purpose of adding iron plate is to prevent A from entering B too much, so that the maximum throttle can not be obtained, but it is enough for the electric accelerator pedal. There is no problem with this design. If something goes wrong, such as a broken sensor, it can't be solved by adding a piece of iron. Then, why doesn't Toyota replace all the recalled cars with electric accelerator pedals? Some people complain that if a new accelerator pedal is put on, Toyota will lose more blood, and buying a pedal is much more expensive than buying a piece of iron. This is where the so-called "experts" are very angry with Toyota. However, Yan Tao tells you that the signals given by the two accelerator pedals may be different. The pedal produced by CTS is metal, and the contact area between A and B is measured (the larger the accelerator pedal, the larger the contact area), that is, the "current" is measured and sent to the computer. The one produced by Denso has plastic in the middle, and the measured current is not the current between metals, but the optical principle. The angle of the middle plastic roller can be given to the computer by a simple optical signal. In this way, if Toyota replaces the recalled car with an electric accelerator pedal, the signal processor in that computer will also be replaced. In America, people in auto repair shops don't take apart computers to replace the parts inside. If they want to change them, they must change the whole computer. What worries me is that the Japanese electric car with accelerator pedal is not only different from the signal processor in the computer, but also different from other components, such as the electronic accelerator switch. Once you change the computer, you have to change that part. In this way, each car needs thousands of dollars (salary plus parts money), and the scale of 9 million vehicles is tens of billions. Toyota doesn't have that much cash, so it has to file for bankruptcy protection. Let's discuss here: Run Yan Tao has never bought a Toyota car himself. Therefore, I wrote this article not because I hate Toyota, but because I really stand in the middle and am an out-and-out bystander. But also for the safety of many people in China. I don't work in a car dealership, and I can't get any benefits from the car factory. Therefore, we can talk about this topic fairly. (2) I found Japanese cars are rubbish at 1985. I can't go to college immediately after graduating from high school, so I have the opportunity to repair the internal combustion engine. So at that time, I had an internal combustion engine maintenance certificate in China, which was called license in English. When I arrived in America, I bought a second-hand Ford car and spent $5,350. I have an old classmate in China. His surname is Li. He also came to the United States with me to study PhD, but he was not in my department. He asked me to help him buy a used car. It happened that an experimenter (white American) in our department was going to sell her Toyota Eagle, which had been driving for two years. Because of my back injury, I can't drive a manual transmission, so I need to buy a used car with automatic transmission, so I want to sell the Toyota manual transmission car that has been driving for two years. I discussed with Lao Li that she could buy the car because the reason why she sold it was clear. Lao Li listened to my words, so I helped him bargain and finally made a deal with 1650. The day of formalities was really lively! Her husband is a doctoral student of Lao Li's teacher "/>! Lao Li didn't mention buying a car to him because he thought it was enough to ask me for help, and Americans didn't care about other people's private affairs. I bargained in the middle, and as a result, they were doctoral students in the same laboratory and the same boss. Classmates belong to classmates and business belongs to business. The price is settled. They are all new for two years. My Ford wants $5,350, and his Toyota only wants $65,438 +0.650, which is more than three times the difference. Besides, my mileage is higher than his. From then on, Lao Li learned to repair cars with me. I have a habit of repairing cars in China: smash scrapped old parts with an axe to see if the parts in that factory are good. As the saying goes, you are not afraid of not knowing the goods, but you are afraid to shop around. Toyota or Honda, the parts of Japanese cars are made of two layers of leather! All the friction outside is very hard and good steel; There is soft iron inside. For example, the main cylinder, the small piston inside, is about as thick as chopsticks. I shook it with a hammer and pulled out the soft iron core inside! The Japanese should still be careful about this kind of small material, and make it soft inside and hard outside. In some parts, the thin skin on the outside is so thin that when you hit it with a hammer, it will sink in at once. American auto parts are made of the same steel inside and out. And Japanese car parts, with a steel file, you can see the bright appearance of black soft iron wrapped in a few strokes. Lao Li understood at that time why Japanese cars were so cheap (at that time, Japanese cars were very cheap). Unfortunately, Lao Li died of liver cancer a few years ago. Otherwise, he could easily write a wonderful article today. 10 years later, a neighbor of my new home is Japanese, and his job is to make auto parts in the United States. He is the manager of that factory. Because his daughter and my daughter are classmates, both in primary school, and often do homework or play together. There are many connections between the two families. He wrote me his name "Xiao Linqing" in Chinese (or "Xiao Linqing", I forgot). I talked to him most about auto parts. I told him that Japanese car parts are made of two layers of leather! He turned red when he heard this, and then asked me which media I was exposed from. I said I smashed it myself. He just smiled. I showed him the two layers of leather I saw after filing the parts in the rear brake pump of Honda Civic. He said that the big consortia in the United States all bought shares in Japanese cars, which could not be disclosed in the media. The American media are all private, that is, controlled by consortia. But he said that Japanese cars don't have to be driven for decades, and they don't have to be made of good steel inside and outside. After hearing what he said, I don't think Japanese cars are rubbish. Because I despised him, he was indignant and said that the Japanese learned this skill from you in China! I'm curious, because when I was in China, I didn't find that China's parts were made of two layers of leather. He said that Japanese sabers are made of fine steel, so soldiers can only carry long guns, and only officers have sabers. Later, I learned that there is a saying in China that "good steel is used on the blade". It is found that China's knife is made of two materials: good steel on the blade and soft iron elsewhere. From then on, I am no longer qualified to tell him that Japanese car parts are deceptive garbage. But I told him: "This way of making auto parts will make a big leak sooner or later!" "He shook his head incredibly today. I heard that his company moved to Florida. I don't know his mailing address, otherwise I would definitely talk to him about this topic. (3) The root cause of the problem of Toyota accelerator pedal may be "double skin", which is also caused by accelerator pedal and produced by CTS family. Why don't American cars and German cars have this problem? Because people require all steel products to be the same. Toyota's accelerator pedal, the friction part is good steel, and the non-friction part is soft iron. Due to the different materials of steel A and steel B, the degree of thermal expansion and cold contraction is different due to the change of temperature. When the temperature is extremely low, steel A and steel B have different densities and different shrinkage coefficients, which may lead to non-contact. This makes the car stop sometimes when you step on the accelerator pedal. Step on the accelerator again, and the car suddenly jumped out after the contact area increased. When the car is overheated, A and B of the accelerator pedal will be pushed together at once because of the different thermal expansion coefficients. Even if you release the accelerator pedal, the pedal will not come back, because the friction between A and B is too tight, which exceeds the tension of the spring. Then why did Toyota suddenly accelerate? According to the common sense of physics, the accelerator pedal cannot bounce back because A and B are too tight, so the accelerator will not increase, although it will not decrease. Actually, I don't see the explanation of this problem. Running Yan Tao's conjecture, that is, theoretical and logical reasoning, is because the driver found that the throttle didn't come back and got stuck, so he wanted to step on it and let it bounce back. But it doesn't matter if you step on it The contact surface between accelerator pedals A and B is larger, and the friction force is greater, so it can't bounce back. No, the accelerator is also enlarged. That's why the police hit his Lexus at 120 mph. So, is the accelerator pedal of CTS high-grade or the plastic core pedal of Denso in Japan high-grade? Personally think: CTS is of high grade! Because the life of metal is much longer than that of plastic. The problem is that Toyota used two kinds of materials when designing the accelerator pedal, while American cars and German cars used one kind. The coefficient of thermal expansion and cold contraction of a material is the same, so Toyota has no problem. The Japanese cut corners, cut costs and didn't care about the accelerator pedal, which led to the tragedy of 19' s death. According to my reasoning, the designer of Toyota accelerator pedal is too careless. The Japanese only know that China people have the idiom "Good steel is used in the blade", but they don't know that there is an allusion of "carelessness in Jingzhou". If Toyota doesn't take it for granted that there will be no problem with the design of American cars and German cars, then they will divide A and B into two organs: two kinds of steel will have no problem, but they will be supported by another spring on the back of A or B instead of casting together now. In this case, no matter how the temperature changes, the contact between A and B is constant and is held down by the spring on the back. In fact, Toyota didn't care about such a simple idea. After all, it's not an engine or a gearbox, just a pedal. Therefore, inconspicuous places, if you are not careful, may ruin the company. The same is true of war. A humble guy became a traitor, and there are too many historical stories about the enemy of military secrets knowing and losing the game. (4) The accelerator pedal can't come back. Why is the brake not working? A lot of speculation about computers is due to a problem with the program settings in the computer when Toyota built the car. For example, if the accelerator doesn't come back, the computer will tell the brakes don't work. Actually, this guess is wrong. I took apart most brands of Toyota cars. In America, Toyota repairs cars for friends the most. It is not that I am willing to repair Toyota, but that everyone buys Toyota. Many people ask the experts of car dealers why the accelerator doesn't return and the brakes don't work, which leads to people's death. Those so-called experts can't give you the answer. The reason is that many people who repair cars can't even get into college, so they go to a junior college and learn to repair cars, and it's over. They know which parts should be removed and which should be put on. You have to ask him what is in the parts and why. They are not so curious and have no IQ at all. They only know what they have learned, what they have not learned, and they don't want to know. I'll tell you this mystery: when the throttle is at full throttle, there is no vacuum in the vacuum tube. Dynamic brake (dynamic braking system) for braking needs vacuum. When the accelerator pedal was trampled to the end by the driver's foot (because he found that the accelerator could not come back, he wanted to step on it again), the accelerator was fully opened. At this time, the vacuum in the vacuum tube is gone, and the dynamic braking is invalid. Of course, if you meet a driver who weighs 500 kg, he can step on 200 kg as soon as he lifts his ass and right foot. 200 pounds can brake. Because dynamic braking is 20 times larger than manual braking. A normal 10 pound force can stop a 70-mile car. If there is no dynamic braking, the foot alone will cost 200 pounds. Usually, our weight is less than 200 kg, and many women weigh around 100 kg, and they don't know how to lift the hip brake. Once there is no vacuum in the vacuum tube, they can't stop. However, here is a life-saving trick. After reading this article, you may encounter a similar situation (not necessarily the accelerator pedal, the computer-controlled accelerator switch sometimes breaks down! ), I will be your savior! When the throttle is turned to the maximum, there will be no vacuum in the vacuum tube, but as long as you don't release the brake and brake hard, the vacuum inside will not leak and you can stop the car! Then why did 19 people die because they couldn't stop the car? Because they don't understand this truth! They found that the brakes were not so smart, so they released the brakes and then stepped on them. This is troublesome, because once the brake is released, there is no vacuum inside and there is no way out. So, after reading this popular science article, if you find that your car has stepped on the accelerator very high in the future, don't release the brakes. As long as you keep stepping on the brakes, you will definitely stop the car. (5) What is the reason for Toyota to add a piece of iron? Is it useful? If you read the above explanation carefully, you should know that with an iron plate, A and B of the accelerator pedal can't make the accelerator open to the maximum. Because the throttle can't be opened to the maximum, the vacuum in the vacuum tube can keep the brakes from failing. In other words, Toyota's remedy is not to say that the car will not get stuck on the accelerator in the future, but that it will not stop if it gets stuck. Even if the driver releases the brake repeatedly, the car will stop because the vacuum is fine. Of course, Toyota said that it would not be stuck in the future. In fact, the reason is that since the contact area between A and B can't reach the original size, the friction force will not be so great. However, Run Yan Tao thinks that the iron sheet should not be too thick, because it cannot be accelerated. In other words, the stuck thing will happen again, but even if it happens, the brake system will not fail, resulting in fewer deaths. If the car can stop and the engine is crazy, let it be crazy for a while. When you stop the engine and the car cools down, as long as the accelerator pedal shrinks, the tension between A and B is not so tight, and the spring will bounce it back. You hit the road again and continue to enjoy the excitement of driving. As long as there is no danger to life, a little excitement is an extra enjoyment of life. Otherwise, how could so many people spend money to turn the Six Flags and Dienis? (6) Adding a piece of iron is a temporary solution, not a permanent cure. How to treat it? If you are driving a car before 2000, you should know that the accelerator pedal is directly connected to the accelerator switch, that is, you are stepping on the accelerator itself. Later, the development of computers was used in cars. The accelerator pedal is no longer connected to the accelerator switch, but to the computer. You're not stepping on the accelerator, it's the computer. According to the signal, the computer gives instructions to the throttle switch. So, the problem is big. First of all, will the accelerator pedal go wrong or get stuck? Then, even if there is no card, the sensor is not broken. Once it breaks down, as soon as you step on the accelerator, the car won't move. But it won't accelerate. The reason is simple: every car's computer has grinding settings. What does this mean? That is, no matter what happens to the computer, such as the computer can't receive the signal, it will crash. There will never be a setting that speeds up when the computer breaks down. But if the accelerator switch itself gets stuck, just like the accelerator pedal gets stuck, then you can't slow down. There are always smart people! In 2002, someone developed the "brake override system" (translated as "brake priority system" in Chinese). In fact, override is not "priority" here, but "hegemony". A more accurate translation should be "the brake is the master". I'm coming, grandchildren, make way! ) 。 What does this mean? That is: as soon as you step on the brake, no matter what the throttle signal is, the oil supply system will immediately reduce the oil to a minimum. The technical vocabulary is "idle speed", which means that when you don't give the throttle, the engine speed is less than this speed, and the engine will stall. Exceeding this speed, the engine consumes too much fuel and is wasteful. The idle speed is generally 550-750 rpm. This difference depends on the weight of the inertia wheel inside the engine. As far as I can remember, I know that in about 2002, Mercedes-Benz bought this patent and installed it in this brake override system. In 2003, Chrysler and other American cars also bought this patent and installed this system on new cars. Then, European cars such as BMW and Volkswagen (vw) also installed this system. If you buy a 20 10 Japanese car, no other car has this system except Nissan. After 20 1 1 year, the United States may not be allowed to sell cars in the United States unless this system is installed. Let's talk about whether there is any difference in this system first. First of all, don't say that Toyota cars caused 19 deaths. Even if they are not dead, the car accident is no small matter. The difficulty of braking the same car, whether or not this system is installed, is very different. For example, braking at 70 mph, with or without this system, the distance to stop the car is more than 12 feet! The 6-cylinder Nissan's 20 10 finidi G37 has almost the same weight. Because of the "braking system", it has a braking distance of 24 feet compared with the 6-cylinder Toyota's 20 10/00. Why is it so much worse? Here, I need to tell you why this system is called "the brake is the main system". Before 2000, you can see that there is a throttle switch on the top of the engine, and a semicircular one is pulled by a steel wire. This wire leads directly to your accelerator pedal. As soon as you step on the accelerator pedal, this steel wire pulls the accelerator switch to open the accelerator. But you will find two steel wires. One of them leads to the accelerator pedal, and the other is pulled by the accelerator buffer. Think about it, if there is no buffer, as soon as your foot releases the accelerator pedal, the accelerator will immediately return to idle speed, and you will feel "hitched". This wire is pulled by a spring. When you release the throttle, it will not come down at once, but slow down. In this way, you won't feel trapped. Now, the problem is coming! When you release the accelerator and step on the brake, it is not only the inertia of the car but also the high-speed engine that brakes! Because the accelerator didn't come back. With this "brake-based system", as soon as you step on the brake, the fuel supply system of the throttle will immediately return to the idle position, even if your other foot steps on the throttle or the throttle is stuck, it will not refuel the engine. So, what is the value of this system? I tell you, you will swear! This system, including patents, costs only 30-50 dollars per car! Of course, look at the car output. The more the cheaper. I have been puzzled for many years. The Japanese are so wicked that they can be installed for tens of dollars! Don't say kill, just brake. 70 miles per hour, which is 10 feet away! Many Japanese cars are rear-ended, and the front and rear are smashed. People who buy Japanese cars never drive European cars, such as Volkswagen VW, which is not more expensive than Japanese cars. They don't know how different the brakes are. Tomorrow, you will drive an English finidi with this system in Nissan and a Lexus without this system in Toyota, which are of the same class, such as cars or SUVs. You can also compare other brands of cars. No more surprised than I don't know. Some people say Honda is ok. In fact, I haven't seen the news of Honda's recall, which doesn't mean there is no problem. I know that two China people bought a new Honda car last year and found that they suddenly accelerated on the road. Of course there was no car accident. China people don't want to complain. Maybe one day you will hear that Americans are suing Honda, so you don't need to be surprised. Because Honda parts are also made of two layers of leather! Even if there is no problem with the accelerator pedal, the accelerator is still very high when braking, and the engine with large accelerator should also brake at the same time. Rear-end collisions often occur. Besides, it is inevitable that the electric throttle switch will not go wrong, and none of the nearly 20 thousand parts of the car will never go wrong. Once something goes wrong, the car will suddenly accelerate automatically. If there is no "brake is the main system", even if it stops, it will take a long way, and maybe it will rear-end the car in front. (7) Another safety hazard of Japanese cars. When it comes to this matter, many people are very angry. Everyone buys a car according to the car safety rating. The safety rating of Japanese cars is not low, but we don't know that the safety rating of 5 stars is measured by frontal collision and side collision. Top pressurization is just for reference, and even many cars don't measure this item. What do you mean? That is to say, if the car turns over and all four wheels are up, is it dangerous for the people inside? That is to say, according to the weight of the car, press it down on the roof to see if it can stand it. If your car weighs 4,000 Jin, there is still inertia stress when it is turned over, which will not be as soft as when we lift it and turn it over and slowly put it down, so we need to add a coefficient. Like 4,500 pounds of pressure. What can be tolerated is G (good), then A (acceptable), and then it is worse. Of all Japanese cars, only Subaru's model is G (good), except Honda's element, other Japanese cars are not up to standard. Just because the American Highway Administration didn't take the rollover survival rate as an indicator, the Japanese took advantage of this loophole. Toyota, in particular, doesn't even have a car that meets the standard. Toyota has produced so many kinds of cars, and none of them are G cars. If you drive other Japanese cars instead of Subaru, be careful. Don't turn over. Once you roll over, you and your passengers will die. What's the problem? On the window frame of the car. In order to reduce the cost of Japanese cars such as Toyota, the steel used for the window frame of each model is poor in hardness and thin, and the inside is plastic. In fact, I have seen a car with four wheels turned over twice. I have a colleague who once had four wheels turn upside down, but his car is an American Oldsmobile, and the window frame of the car can bear the pressure of the car body, otherwise his head will be squashed. It's ok to drive a Japanese car as long as it doesn't roll over.