Internal Combustion Engine Basics
All Jeep Vehicles
Brief History Of Internal Combustion Engines
In 1885 Gottlieb Daimler constructed what is generally recognized as the prototype of the modern gas engine: small and fast, with a vertical cylinder, it used gasoline injected through a carburetor. In 1889 Daimler introduced a four-stroke engine with mushroom-shaped valves and two cylinders arranged in a V, having a much higher power-to-weight ratio; all modern gasoline engines are descended from Daimler's engines.
How The Four Stroke Engine Works
To understand the basic idea behind how a reciprocating internal combustion engine works, it is helpful to have a good mental image of how "internal combustion" works. If you put a tiny amount of high-energy fuel (like gasoline) in a small, enclosed space and ignite it, an incredible amount of energy is released in the form of expanding gas. If you can create a cycle that allows you to set off explosions like this several hundred times per minute, and if you harnessed that energy in a useful way, you would have the core of a car engine!
Here's what happens as a car engine goes through its cycle:
Now the engine is ready for the next cycle, so it intakes another charge of air and gas.
Almost all cars today use this type of reciprocating internal combustion engine because this engine is:
These advantages beat any other existing technology for moving a car around.