Those familiar false knowledge about cars

1 and Audi 3.0T are turbocharged?

If you see Turbo or T at the rear of the vehicle, most people will think that the engine used in this car is a turbocharged engine. But Audi's original 3.0T engine is not turbocharged, but supercharged mechanically. In fact, 1.8T and 2.0T in Volkswagen and Audi models are indeed turbocharged, but this 3.0T engine is equipped with Roots supercharger, although it is marked with T. In other words, the T of Volkswagen and Audi stands for forced air intake, but it is not necessarily turbocharged, but it may also be supercharged.

In addition, Audi transplanted the four-wheel drive system to the car for the first time, but Audi's Quattro four-wheel drive system is not all Audi's own technology. The Quattro installed on the front transverse engine model is actually similar to Volkswagen's four-wheel drive system, both of which are HALDEX from Sweden.

2. Mazda's "compression ignition" is awesome?

Since the next generation of Angkor Sela, many people's expectations for Mazda compression ignition engine have never stopped. As the "pinnacle" of Mazda's research on naturally aspirated engines, it naturally aroused the appetite of many people. What is compression ignition?

It is well understood that compression ignition is to use high pressure to ignite fuel, and no spark plug is needed in the process of doing work, thus achieving higher pressure, more complete combustion and more abundant power release. However, the compression ignition engine promoted by Mazda is not all compression ignition starting, but a combination of compression ignition and spark ignition. What's more regrettable is that this engine has not actually been listed in China until now.

3. American cars have high horsepower and poor handling?

Many people think that American cars have high horsepower and poor handling. In fact, purebred American cars, Corvette and Viper have all done quite well in New Taipei. Besides, there are many "misunderstandings" about American cars. Here are a few more cases: the horsepower of American cars is different from that of China cars.

Intuitively speaking, the horsepower unit in the United States is hp, and that in China is Ps. With the same power 150kw, the horsepower value in the United States is 20 1hp, and that in China may be 204Ps. Many people think that Americans prefer large displacement self-priming and despise turbocharging. This is actually right and wrong. Because you put a Subaru STI/ Mitsubishi EVO/ Nissan GT-R in front of Americans who like cars, almost everyone will like it very much.

4. Why does America like to drive pickup trucks?

Many people think that pickup trucks driven by Americans are equivalent to pickup trucks in China, which are commercial vehicles and tool vehicles. Part of it is, but pickup trucks in the United States are very different from those in China. Many families' pickup trucks are not used for work, but for travel. The pickup truck should play the role of crossing or towing the RV. For Americans, pickup trucks are very practical and emotional. Almost all the uses you can think of, pickup trucks can be completed.

Cars, off-road vehicles, SUVs, boxes, minivans … whatever these cars can do, pickup trucks can do! It is not an exaggeration to use a car four times and a car five times. With pickup trucks, you can transport food and goods by yourself; For example, cleaning the house or yard, convenient transportation of various materials, pulling lawn mowers or snow shovels, etc. When you go on holiday on weekends, you should drive a pickup truck with a mobile RV, yacht or motorboat.

5, blowing L2.5 for n years.

Nowadays, "L2.5 automatic assisted driving" appears more and more in the propaganda of car companies. So, what's the difference between L2.5 and L2 autopilot? In fact, there is no L2.5, just a little more configuration on the basis of L2, and it can't reach L3, so it won't save much. The technical classification of L0-L5 automatic driving system (ADS) comes from SAE International. Among them, from L 1 to L4, people and systems need to cooperate with each other to complete driving, but people's participation is different.

Level L2 is defined as "partial automation", and the system can support various operations such as steering wheel, acceleration and deceleration. The basic functions of L2 class cars include ACC (Adaptive Cruise) and LKA (Lane Keeping Assist). L3 level is defined as "conditional automation", in which all driving operations are completed by the system, and when there is demand, the system will remind human beings to make appropriate responses and interventions.

It can be said that since L3, autopilot has undergone a qualitative change. Although it still needs to be able to take over the vehicle at any time, the driver no longer needs to monitor the driving environment. This is also the highest level that can be achieved by the current production models. Therefore, L2 is L2, L3 is L3, there is no L2.5 at all, just a publicity stunt. However, from L2 to L3, this classification cannot be realized in a short time.