The automobile engine is that the fuel burns in the cylinder to push the piston to do work, and then it is converted into mechanical energy to drive the automobile forward. At present, there are two kinds of engines used in automobiles: gasoline engines and diesel engines. The earliest automobile engine was developed at the end of 19. This is a simple single-cylinder gasoline engine. Its output power is only a few horsepower, which is equivalent to the power of ordinary motorcycles now. For example, a German named Daimler was a pioneer in manufacturing automobile engines. Later, Daimler cooperated with Ben Ci, the world's first automobile manufacturer, and the two companies merged to produce the now famous Daimler-Benz Company, hereinafter referred to as Mercedes-Benz Company. The rise of automobile racing in the early 20th century greatly promoted the progress of engine technology. Ferrari, Jaguar, Maserati and other car factories have made brilliant achievements in the field. At that time, automobile engines with large displacement and multi-cylinders were already used in racing cars and luxury cars, but at that time, due to technical limitations, automobile engines were all in-line cylinders and could not be made too complicated, otherwise the volume would be too large and the reliability would be reduced, thus greatly limiting the application of high-performance engines in ordinary cars. After World War II, V-type engines began to be widely used in high-end cars. Ordinary cars still use in-line engines, which have simple structure and good economy. And with the development of technology, the fuel consumption of automobiles is also decreasing. In order to achieve better comfort, durability and performance, the exhaust capacity of ordinary economical automobile engines is also constantly improving.
The two most basic parameters to measure engine performance are: the number of cylinders and the working volume of cylinders, the latter being the commonly used displacement. Generally speaking, the more cylinders an engine has, the greater its displacement and the better its performance. The number of cylinders is closely related to the displacement, and engines with large displacement usually have more cylinders. At present, most automobile engines in the world are 4- 12 cylinders, 1-6 liters. At present, most cars are equipped with gasoline engines.
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