A car consists of many thousands of individual parts. But what is really necessary to drive the car? A cigarette lighter, power windows or car radio? Without these you could still drive a car.
Let's look at cars created more than 100 years ago. These cars had engines and various parts such as gears, clutch and drive shaft to transfer power from the motor to the four wheels, brakes and steering. A seat was available as well, because no-one wanted to stand all the time. All these parts were hung on a frame, the body.
The engine
Automobiles are equipped with engines that work with gasoline or diesel. Diesel fuel is nothing more than heating oil, only with a few chemical additives, so the engine runs better. The core of the diesel engine is a cylinder block which is a two, three, four, five or six (sometimes more) cylinder. These cylinders move the piston.
At the top of the cylinder, the injection nozzle is mounted, through which the diesel fuel is injected at high pressure into the combustion chamber. The cylinder head has two valves, the intake valve and exhaust valve. The piston moves the cylinder to the bottom, so air comes in through the intake valve into the cylinder.