What kind of car should it be? What counts as a car?

The world-recognized inventor of the BAI car was the German Carl Friedu Trich Mercedes. In 1885, he developed the world's first horse-drawn carriage-type three-wheeled car, and on January 29, 1886, he obtained the world's first automobile invention patent, which is known by most people as the birth day of modern automobiles, and Mercedes-Benz is also known as the "father of the automobile".

A car is a non-track vehicle that is powered by power and has 4 or more wheels, which is mainly used for: carrying people and (or) goods; towing vehicles carrying people and/or goods; Special Purpose.

Vehicles that generally have four or more wheels and do not rely on rails or wires to travel on land. Automobiles are usually used as trailers for carrying and towing passengers and goods, and are also modified or equipped with special equipment to complete specific transportation tasks or operational tasks, but do not include machinery intended for agricultural use. Full trailers and semi-trailers do not have their own power units, and they only belong to the category of automobiles when they form a car train with a tractor.

The engine is the power plant of the car. Its role is to generate power from the combustion of fuel, and then drive the wheels through the transmission train of the chassis to drive the car. There are two main types of engines: gasoline engine and diesel engine.

The gasoline engine consists of a crank connecting rod mechanism, a valve mechanism and a fuel supply system, a cooling system, a lubrication system, an ignition system, and a starting system. The ignition method of diesel engine is compression-ignition, so there is no ignition system.

Vehicles that are power-driven, have 4 or more wheels and are not track-loaded, mainly for: carrying people and (or) cargo; Vehicles towing persons and/or goods with the right of carriage; Special Purpose.

Domestic car brands include: Hongqi, Changan, Great Wall, Chery, Geely, Roewe, etc.

Foreign car brands include: Toyota, Volkswagen, Hyundai, Kia, Peugeot, etc.

The car is a non-track vehicle driven by power and has 4 or more wheels, which is mainly used for: carrying people and/or goods; towing vehicles carrying people and/or goods;

A diesel engine is an engine that burns diesel fuel to obtain energy release. The advantages of diesel engines are high torque and good economic performance. The working process of a diesel engine has many similarities with a gasoline engine, and each working cycle also goes through four strokes: air intake, compression, work, and exhaust.

However, because the fuel used in diesel engine is diesel, its viscosity is greater than that of gasoline, it is not easy to evaporate, and its spontaneous ignition temperature is lower than that of gasoline, so the formation and ignition of combustible mixture are different from those of gasoline engine.

A gasoline engine is an engine that uses gasoline as fuel to convert internal energy into kinetic energy. Because gasoline is less viscous and evaporates quickly, gasoline can be injected into the cylinder with a gasoline injection system, and after compression reaches a certain temperature and pressure, it is ignited with a spark plug to make the gas expand to do work. The gasoline engine is characterized by high speed, simple structure, light weight, low cost, stable operation, and convenient use and maintenance.

Gasoline engines are used in large quantities in automobiles, especially small cars. (Photo by Zeng Huiwen, Pacific Automobile Network).

A motor vehicle is defined as a non-track-carrying vehicle powered by power and with 4 or more wheels, mainly used for: carrying people and/or goods; towing vehicles carrying people and/or goods; Special Purpose.

In 1829, James of England invented a steam car with a speed of 25 kilometers per hour, which could be used as a large car. The cars, with bulky boilers and lots of coal, emitted black smoke, polluted the streets, and made rumbling noises, and accidents were frequent. In 1860, the French worker Lunoar invented the internal combustion engine, which used a gas engine of about 1 horsepower to drive the car, but it did not work well.

However, the car was created under the influence of this internal combustion engine.

A vehicle that uses an internal combustion engine as an engine and travels mainly on a highway or on a road, usually with four or more wheels.

A non-track-carrying vehicle that is power-driven and has 4 or more wheels.

According to the standard, a motor vehicle is defined as a non-tracked vehicle powered by power and with 4 or more wheels, mainly used for: carrying people and/or goods; towing vehicles carrying people and/or goods; Special Purpose.

According to the authoritative statement of "Cihai": "A car is a trackless vehicle that can be driven by itself and is mainly used for transportation. Originally called 'automatic car', it is referred to as a car because it is mostly equipped with gasoline engines."

The Modern Chinese Dictionary explains that "a car is a vehicle powered by an internal combustion engine, mainly on a highway or road, usually with four or more rubber tires." Used to carry people or goods. "But it's a misconception to define a car in this way.

A motorcycle is also self-propelled, trackless, and uses a gasoline engine; Second, tractors also use internal combustion engines, trackless, and have four or more wheels; Third, the steam locomotive in the past used an external combustion engine; Fourth, today's cars can also use natural gas, coal gas, methanol, etc. as fuel, not to mention solar cars, electric vehicles, etc. Therefore, there are certain limitations in the current interpretation of automobiles, and it is necessary to make a statement on this to reflect the characteristics of automobiles more scientifically.

We believe that the definition of automobile must take into account the following factors: First, the emergence and development of automobiles. The emergence and development of automobiles has gone through a history of more than 200 years, and automobiles in different periods have different structural characteristics, and the types and uses of automobiles are also changing with each passing day; Second, based on the original intent of the car.

Automobile originated from the West, and should be defined based on the original meaning of Western and combined with the modern sense of the automobile. The "automobile" in English is composed of "auto" and "mobif will move", which is the origin of "automobile car", which means that it can move itself, that is, an automatic car; Thirdly, there is a difference between the car and other similar machinery. In the definition of a car, all the characteristics of similar machinery should not be fully covered.

A car is a vehicle that is powered by a non-track load with four or more wheels.

A car that is driven by its own power and has more than four wheels running without track lines.

Sedans are divided into grades, which can be divided into A-class, B-class, C-class, and D-class cars.

1. A-class models.

In the A-class, it can also be further subdivided into 3 classes, which are:

A00 class sedan: It is the smallest class of cars, because the engine displacement of the car is less than 1L, and the wheelbase is very short, about 2 meters. The more common cars on the road are Chery QQ, BMW MINI and BYD Zonouchan F0 and other cars, which are also very recognizable on the road.

A0-class sedans: Everyone is used to calling cars small cars, their engine banquet displacement is higher than 1L, between 1L, and the wheelbase is about meters. Cars such as the logo 207 and Volkswagen Polo belong to this kind of car.

A-class sedan: This kind of car is what everyone calls an A-class car, which belongs to a compact car. The displacement of their engines is between, and the wheelbase is meters. Cars such as the Volkswagen Lavida and the Nissan Sylphy are typical A-class cars.

2. B-class cars.

This type of car is used to being said to be a medium-sized sedan, with a displacement in between, and the wheelbase of the car is higher than that of the A-class car in meters. Mercedes C-Class, Audi A4, Honda Accord are typical B-Class sedans.

3. C-class sedan.

The C-segment sedan is also a medium and large car, with a displacement of the car in between, and a wheelbase of meters. Compared with the previous two types of cars, the biggest difference between this car is the wheelbase and displacement of the body, the most common are BMW 5 series, Audi A6, Mercedes-Benz E-class shouting liquid these cars. Of course, cars of this class are generally not cheap.

4. D-class car.

This kind of car, compared to the C-class car, is more luxurious, which is what everyone often calls a luxury car. Their displacement, and wheelbase are the largest and longest in sedans, with a higher displacement and a wheelbase of more than meters. The most typical cars are the well-known Rolls-Royce Phantom, Aston Martin Rapaid and Bentley Mulsanne.

Simple definition of a car.

Vehicles with four-wheeled driving are generally referred to as automobiles.

A car is a vehicle that is driven by an independent power unit and can drive alone to complete the carrying task.

"China's latest national standard "Terms and Definitions of Automobile and Trailer Types" (GB T 3730 1-2001) has the following definition of automobiles: driven by power, with 4 or more wheels of non-track bearing vehicles, mainly used for: carrying people and (or) goods; towing vehicles carrying people and/or goods; Special Purpose.

Domestic car brands include: Hongqi, Changan, Great Wall, Chery, Geely, Roewe, BYD, etc. Foreign car brands are:

Toyota, Volkswagen, Audi, Mercedes-Benz, Hyundai, Kia, Peugeot, etc. In some rural areas, the new "three major items" necessary for marrying a wife, such as a car, a house, and a bride price, have become the "three major mountains" in which older young men in rural areas face "difficulty in getting married."

It can become a car with the power to drive four wheels.