FOUR STROKE ENGINE,,,,,

3D ANIMATION ABOUT THE WORKING OF FOUR STROKE INGINE,,THE HERO OF THE ENGINE IS THE CYLINDER,,,IN WHICH THE LINEAR MOTION OF CONNECTING ROD DUE TO THE COMBUSTION AND EXPANSION PROPERTY OF GASOLINE(DIESEL,HYDROGEN) IS CONVERTED INTO THE  ROTATIONAL MOTION BY CONNECTING IT TO THE CRANKSHAFT,,THEN via TRANSMISSION AND GEARS THE KINETIC ENERGY IS TRANSFERED TO WHEELS,,,AND WE ENJOYS THE TRAVEL,,,REALLY INTERESTING,,,NOADAY HYBRID CARS ARE ON THE ROADS WHICH MAKES USE OF ELECTRIC MOTIR TOO FOR THE TRANSMISSION
VISIT http://mskmechanical.blogspot.com/2010/12/gasoline-power-vs.html FOR DETAILS,,,

Internal Combustion

The ­principle behind any reciprocating internal combustion engine: 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. You can use that energy to propel a potato 500 feet. In this case, the energy is translated into potato motion. You can also use it for more interesting purposes. For example, if you can create a cycle that allows you to set off explosions like this hundreds of times per minute, and if you can harness that energy in a useful way, what you have is the core of a car engine!