Patent ID: 6135072
Filing Date: 2000-10-24
Classification: F02B

Abstract:
A two cycle engine having a piston slidably received in a cylinder to reciprocate between a fires and a second dead point therein, the piston having its first side closed defining with the cylinder a first space constituting a combustion chamber filled with fuel gas and its second side open defined by a piston skirt with a hollow inside space open to a second space in the cylinder continuous to a fuel gas intake chamber, wherein the piston moving towards the first dead point to compress fuel gas in the first space creates suction in the second space drawing fuel gas from an outside source into the intake chamber and, upon an explosion of fuel gas in the combustion chamber driving a resultant waste gas instantaneously out through an exhaust port, the piston moving towards the second dead point creates pressure in the second space that urges fuel gas therein to transfer into the first space, characterized by an arrangement whereby under suction created in said second space by said piston moving towards the first dead point, air is taken from an outside atmosphere into the hollow inside spaced of said Piston skirt and admitted into said second space independently of fuel gas drawn into said fuel gas intake chamber and, under pressure in said second space created by said piston moving towards the second dead point, air so taken and admitted is urged to transfer, behind fuel gas drawn and transferring as aforesaid, into said first space to form an air layer therein which acts in said in said first space to force and hold the fuel gas unburnt being compressed therein to lie as another layer substantially remote from said exhaust port.