"As long as you have three golds, you can have a car for three hundred and a half taels." A salesman in a car sales department in Xianyang shouted loudly with a microphone with all his might. And there were a lot of male customers around. Some of them are trying it out in cars. This is the scene of a car sale in Xianyang, Qin.

A type of car called "Ding" came out in the Qin State. This car is a type of car produced by United Motors that is specifically aimed at the general public. As soon as the car appeared, it immediately caused a huge sensation.

State of Qin. In particular, the Guanzhong area, centered on Xianyang, has established its well-developed transportation network. Especially the number of his road trips. In Guanzhong alone, it has reached more than 37,000 miles. These highways can be found in various areas of Guanzhong.

But Qin had a headache for another means of transportation. That's the carriage. The driving force of the carriage is the animal transportation of horses. Then the horse naturally has to excrete. With the increase in horse-drawn carriages. Horse manure is often found on the road. On other roads, if not cleaned up in time, a large pile of road manure often forms. This has seriously disrupted the flow of traffic. Especially on the highways. It's a lot of trouble to clean up.

In Xianyang. The Qin State was very vigorous in the treatment of horse manure. But even this is difficult to solve effectively and thoroughly. The most difficult thing to deal with is the horse of the carriage. Horses are often frightened and repeatedly cause serious traffic accidents on the streets of the bustling Xianyang. The Ministry of Transport has even thought about lifting the ban on horse-drawn carriages entering the city. But that would be more troublesome. So a convenient and fast means of transportation was born, the car was born.

Several large automobile companies in Xianyang have already appeared when they used horse-drawn carriages. But because it's expensive. Poor stability is not very popular. Especially the speed of the car. Some couldn't even keep up with the speed of the carriage. Such a car is basically scrap metal. And it's expensive. Up to 20 gold or more. Even a trendy figure like Yingyu is not optimistic about such a car. But these failed cars laid the technical backing for my "D" model.

Soon. The "D" type car was developed after the technical upgrade. He has a big price advantage. The cost price is only one hundred and a half taels. Stamping parts are used in large quantities. The advent of a high-density synthetic sponge material has given cars a good tire for the time being. And this sponge material is inexpensive. It was previously used on new artillery. Especially on large-caliber heavy artillery transporters.

There is also an important factor. Gasoline. In particular, leaded gasoline has become widespread. This has led to the massive adoption of automobiles.

The "D" model is a front-mounted four-cylinder gasoline ethanol engine. He combined the advantages of all previous improvements to the car. Pipeline jobs using common parts. This has been popularized on a large scale in all factories of the Qin State.

He used a unique electromagnetic ignition system, but the ignition coil needed to be strengthened because the generation voltage was too low. For easier start-up, it can also be manually switched to a separate dry cell system ignition, and back to an electromagnetic ignition system at high speeds, which has the advantage of continuing operation even when the battery pack is depleted. The spark is distributed to the cremation plug by a low-voltage "timer" mounted at the end of the camshaft in front of the engine, which is the predecessor of the modern distributor, which directs the current to four vibrating coils mounted in a box at the front of the cab, and the timing of the ignition is adjusted by manually turning the timer with the help of a lever on the steering column. Determining the best choice between electromagnetic ignition or battery pack ignition and the most ideal timing method under different load and speed conditions requires considerable skill. In order to maintain the goal of supreme reliability and simplicity, the system was retained even after the car was equipped with an electronic start system with a generator and battery pack.

"D" type car rear-wheel drive, planetary gearing, 3-speed. By today's standards. Can't count as a three-speed. Because there is a gear that belongs to the reverse gear. But one thing is worth mentioning. That is, the car uses a clutch. This has to be said to be a miracle.

The front axle of the "D" model was mounted laterally with a non-independent suspension system with elliptical springs, and the front axle was forged from a drop weight, which Ford demonstrated several times and sent to the dealer to show its superiority. The car's foot brake is different from that of modern cars, its right pedal stops the rear axle through a collar of the brake drum on the drivetrain, while the hand brake is achieved by acting externally on the brake drum.

There are two types of wheels. One is the more expensive steel welded spoke wheels. Such wheels are very durable. This is specially produced by the bicycle manufacturing plant. The other is wooden wheels. Such wheels are inexpensive. But if it's used for long distances. It needs to be replaced. Because it is easily damaged and not easy to repair. In fact. People prefer the former wheel more than the latter. The latter only appeared in the beginning. I haven't seen it since.

One of the disadvantages of the "D" model is that the car does not have a water pump, and the cooling of the engine is carried out according to the natural circulation of the thermosiphon principle. Due to its lighter mass, the hot water rises to the top of the engine and enters the cooler, and when the temperature drops, it returns to the bottom and returns to the engine. This was the cooling flow route for most cars at the time, even with water pumps, until the problem was solved with a cross-flow cooler. However, this is a "D" type car, and the later model is also a later car.

The coolers, lights, and many small parts of the earlier models were made of brass and had a single style, and most of the cars were open-top station wagons. The headlamp developed from the original acetylene lamp to the electric lamp. The "D" uses a number of advanced technologies, such as vanadium steel, to make it extremely durable.

This car was favored by many people as soon as it came out. And other car manufacturers have also imitated it. As a result, the market is flooded with such cheap touring convertibles. Automobile manufacturers compete with each other. It can be said that it has reached a bad level. The patent lawsuit went to the Tingwei's office. But such cases are very troublesome to deal with. Patenting has reached a frenzied level. As long as there is a little technological innovation, the technology patent will be applied for immediately. If you win the case in court in the future, there is a high amount of compensation. The state of Qin granted special protection to technology patents.

Businesses are highly competitive. It shows that this line of work is very profitable. That's obvious. The demand for motor vehicles in Qin is conservatively estimated to be around one million. This number is subject to change in the future. Promising banks also stepped in. The installment loan project allows banks to also get a piece of the pie in the automotive sector. But let the car into thousands of households.