Patent ID: 6142112
Filing Date: 2000-11-07
Classification: F02B

Abstract:
An engine comprising:an engine block having a cylindrical bore formed therein, said cylindrical bore defined by a surrounding cylinder wall;two mutually opposed pistons operatively disposed within said cylindrical bore for reciprocal movement toward and away from each other through an engine cycle during which said pistons reach their respective top dead center and bottom dead center positions within said cylindrical bore at substantially the same instant;a first electrode disposed in said cylinder wall with a terminal end thereof projecting into said cylindrical bore, said terminal end of said first electrode being disposed generally between the top dead center positions of said pistons; anda second electrode disposed in said cylinder wall with a terminal end thereof projecting into said cylindrical bore, said terminal end of said second electrode being disposed generally between the top dead center positions of said pistons and being spaced apart from said terminal end of said first electrode thereby defining a spark gap between the terminal ends of said first and second electrodes, said spark gap being located generally at the radial center of said cylindrical bore.