/kloc-In the 5th century, Leonardo da Vinci, a great scientist, imagined a vehicle that could drive automatically and left a design. This is a car driven by clockwork. 1649, German watchmaker Hans Heqiu tried to build a car according to the design drawing, and the speed reached 1.5 kilometers per hour.
Because of the military needs, Nicolas Joseph Chinyo (1725 ~ 1804), the captain of the army artillery in the period of Louis XIV, France, was ordered to develop a power tractor for towing artillery. 1769, he made the No.1 car in the Paris Arsenal, but it could not be started, and the trial production failed. In May, 177 1, the No.2 car larger than 1 was made. Although it is not ideal, it can take four people and the speed can reach 9.5 kilometers per hour. It is the first car in history that uses steam power without relying on external forces such as wind and animal power. This is a wooden tricycle, 7.2 meters long and 2.3 meters wide. A 0.05 cubic meter boiler is hung on a special rack in front of the front wheel, and the generated steam is sent to the cylinders vertically hung on the left and right above the front wheel, driving two pistons to rotate the front wheel, becoming the first "automatic car" in history.
Because the boiler and two cylinders are installed in front of and above the swinging front wheel, the driving is extremely unstable, and there is no condenser, so it is very troublesome to stop and add water every 15 minutes. In addition, there is no brake, which is very dangerous. As a result, it collided with the wall during the trial operation, causing an accident. 1789, Napoleon I ordered the car to be improved. 180 1 year, the car was sent to the museum of French National Institute of Technology in Paris for safekeeping.