Patent ID: 6308681
Filing Date: 2001-10-30
Classification: F01L,F02B,F02D,Y02T

Abstract:
An apparatus for controlling gas exchange in a piston-type internal combustion engine having at least one cylinder defining a combustion chamber having a main fuel intake conduit and an exhaust conduit, comprising:a pre-combustion chamber communicated between said main intake conduit, said exhaust conduit and said combustion chamber; anda valve arrangement including an intake valve between said main intake conduit and said pre-combustion chamber for controlling flow therebetween, an exhaust valve between said exhaust conduit and said pre-combustion chamber for controlling flow therebetween and a cylinder valve between said pre-combustion chamber and said combustion chamber for controlling flow therebetween, whereby said valve arrangement can be selectively operated to utilize said pre-combustion chamber for both fuel flow into said combustion chamber during an intake cycle and exhaust flow from said combustion chamber during an exhaust cycle.