Detailed Description
Animated
scheme of a four stroke internal combustion engine, Otto principle.
- Fuel and oxygen are injected
- Fuel and oxygen are compressed and ignited
- Fuel combusts and piston is pushed downwards
- Exhaust is removed
When
engine revs smoke comes out of the exhuast.
Warnings & Comments
Warning: This animation
is not completely accurate. There should be some space left when the piston is at its highest position. The current animation
suggests infinite compression.
Comment: This is a 2D projection
of a 3D model. The little space went lost in the pixels of the outlines. And a 2D projection is not able to show the space
around the "roof" of the piston. 11 October 2006 (UTC)
Comment: Ignition of the air-fuel
mixture does not occur exactly at TDC, rather a short time before the piston reaches Top Dead Center. This is commonly referred
to as BTDC and is expressed in a number of degrees of the crankshaft rotation, i.e. 8 degrees BTDC.
