I make a popular science video and all the emperors learn from it!

[2. Modern means of transportation. 】

[8. Automobiles. 】

[A car is a non-tracked vehicle that is power-driven and has 4 or more wheels. 】

[Mainly used for: carrying people and (or) goods, towing and transporting people and (or) goods. 】

【Development History:】

[Jet type. 】

[In 1680, the famous scientist Isaac Newton conceived the scheme of a jet car, using a nozzle to spray steam to propel the car, but it was not made into a physical object. 】

[Steam power. 】

[In 1769, N J Juniu, a native of the country, built a three-wheeled car powered by steam from gas combustion, but the speed of this car was only 4 miles per hour, and it was very troublesome to stop every 15 minutes to fill the boiler. Later, the car crashed into a brick wall during a march and shattered into pieces. 】

[In 1879, the German engineer Karl Benz successfully tested a two-stroke experimental engine for the first time. 】

[This car has some basic features of modern automobiles, such as spark ignition, water-cooled cycle 12, steel tube frame, leaf spring suspension, rear-wheel drive, front-wheel steering, and brake handlebars. 】

[This is recognized as the world's first modern car.] 】

[In 1829, James of the Kingdom of Bo invented a steam car with a speed of 25 kilometers per hour, which could be used as a large car. 】

[The car had a bulky boiler and a lot of coal, emitted black smoke, polluted the streets, and made rumbling noises, and accidents were frequent. 】

【......】

[Gasoline. 】

[1885 was the year of the invention of the automobile and a decisive breakthrough. 】

[Benz, who was at the same plant as Daimler at the time, was also working on automobiles. 】

[In 1885, he succeeded in making a gasoline engine almost at the same time as Daimler, fitting it on a car and traveling at a speed of 12 kilometers per hour. 】

[In this year, Butler of the country also invented a car with a gasoline engine. 】

[In addition, Bernard, who is in Italy, also invented the automobile, and Puchlov and Vlopov of the Furry Bear country invented the car with an internal combustion engine.] 】

[Electricity. 】

[The world's first research on electric vehicles was a fly-by-wire device completed by Hungarian engineers in the laboratory in 1828. 】

[The first electric car actually manufactured was invented by the people of the United States between 1832 and 1839, and the battery used in this electric car was relatively simple and could not be recharged. 】

【......】

[In 1886, the Mannheim Patent Office granted Karben a patent for his three-wheeled car developed in 1885, a date that most people call the birth of the modern automobile. 】

[The following year, Daimler, a German, made the world's first four-wheeled car. 】

[Later, the German Nicholas Otto announced that he had given up the patent he had obtained for the four-stroke engine, and anyone could make it as he wished. 】

[On January 29, 1886, Karl Ben obtained the world's first automobile engine patent. 】

[In July of the same year, the world's first four-wheeled car was officially sold. 】

[In 1888, Emile Rogers, a bicycle merchant in the FA country, obtained permission from Ben and began to produce commercial cars. 】

【Basic Structure:】

[Engine.] 】

[The engine is the power unit of the car, which is composed of 2 major mechanisms and 5 major systems:]

[The crank connecting rod mechanism, the valve mechanism, the cooling system, the fuel supply system, the lubrication system, the ignition system, and the starting system are composed, but the diesel engine has one less ignition system than the gasoline engine. 】

【...】

[Chassis. 】

[The role of the chassis is to support and install the assembly of the automobile engine and its various components, form the overall shape of the car, and accept the power of the engine, so that the car can move and ensure normal driving. The chassis consists of five parts: transmission system, driving system, steering system, suspension system and brake system. 】

【...】

[Body.] 】

[The body is mounted on the frame of the chassis and is used for the driver, passengers to ride or load goods. The body of passenger cars and buses is generally an integral structure, and the body of trucks is generally composed of two parts: the cab and the cargo box. 】

[The body structure of the automobile mainly includes: body shell (body-in-white), doors, windows, front sheet parts, interior and exterior decoration parts and body accessories, seats, ventilation, heating, air conditioning, air conditioning devices, etc. Trunks and other equipment are also included on trucks and special purpose vehicles. 】

[Tires. 】

[Tire is one of the important parts of the car, it is in direct contact with the road surface, and the car suspension together to alleviate the impact of the car when driving, to ensure that the car has a good seat comfort and driving smoothness; to ensure that the wheels and the road surface have good adhesion, to improve the traction, braking and passability of the car; to bear the weight of the car, the important role of the tire in the car has been paid more and more attention. 】

【......】

[353 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" where older young men in rural areas face "difficulty in getting married". 】

[In January 2024, the number of motor vehicles and drivers in China reached 435 million and 523 million respectively. 】

【...】

"I can understand that the car is similar to our carriage, it is four wheels, and it is used to pull people and goods. "

"But a car is much better than a horse-drawn carriage. "

"That is, which dynasty have you ever seen with tens of thousands of carriages!?"

"Hey, do you want a bride price for future generations to get married?"

"Ha, laugh, the descendants are so rich, it's difficult to get married?"

"Anyway, I can't laugh, no matter how difficult it is for future generations to get married, but people are rich, no matter how much they can live comfortably, they don't worry about hunger and cold. "

"Made! don't talk about it, the more you talk about labor, the more angry you become!"

“..."

The ancients sighed at this.