Patent ID: 6668769
Filing Date: 2003-12-30
Classification: F02B,Y02T

Abstract:
A two stroke hybrid piston engine comprising:a piston reciprocating within an engine cylinder defining in part a combustion chamber within a cylinder in an engine block, a crank shaft and connecting rod reciprocating said piston in said cylinder; a compressor driven by said crankshaft compressing air and delivering the same to an inlet passage connected to said combustion chamber, said compressor comprising a trochoidal rotor compressor mounted at one end of said engine block aligned with said crankshaft; an air injection valve controlling communication of said inlet passage with said combustion chamber, said valve opened by a valve operating device as said piston approaches top dead center to cause injection of precompressed air from said compressor into said combustion chamber; and a fuel injector injecting fuel into said precompressed air in said combustion chamber.