Opposed Format

The engine above is called the "flat" or "opposed" engine.  This engine is not used in that many vehicles today except for a select few.  They are common in cars such as the Subaru, Porsche, and Volkswagen.  Besides cars they are also used in aircraft, buit only eirplanes.  They are used in airplanes because of their horizantal format for the pistons.  The horizontal format of the pistons are good in airplanes because they are flat enough for the pilot to successfully see over the front of the aircraft.  These engines aren't used that much but are very interesting machines because they have many features that make drivining a better expieriance.

These engines are used because of their efficient feature.  Because of the horizantal format of the pistons this engine will cut down on vibrations.  Vibrations of the engine are cut down because the pistons, in the horizantal postion, oppose eachother and balance out the force created by the power stroke.