Patent ID: 6305334
Filing Date: 2001-10-23
Classification: F01B,F02B

Abstract:
A balanced five cycle internal combustion engine comprising:a housing assembly having a longitudinal axis and a central plane perpendicular to said longitudinal axis,a plurality of first cylinders in said housing assembly on one side of said central plane having parallel axes disposed in annularly spaced relation about said longitudinal axis,a plurality of second cylinders in said housing assembly on an opposite side of said central plane and disposed in coaxial mirror image relation with respect to said plurality of first cylinders respectively,each of said plurality of first and second cylinders each including an inlet end portion having an inlet port therein, a central working portion and an outlet end portions having an outlet port therein,the inlet end portion, the central working portion and the outlet end portion of said plurality of first cylinders being arranged in mirror image relation with respect to the inlet end portion, the central working portion and the outlet end portion of said plurality of second cylinders respectively,a first inlet piston mounted in an associated first cylinder constructed and arranged to be moved in sealing relation to the associated first cylinder from an inlet end position wherein the inlet port thereof communicates with the working portion thereof in an axial direction away from said inlet end position into an inlet port cut-off position wherein said inlet piston cuts off communication of the inlet port thereof with the working portion thereof and beyond into the working portion thereof,a second inlet piston mounted in an associated second cylinder constructed and arranged to be moved in sealing relation to the associated second cylinder from an inlet end position wherein the inlet port thereof communicates with the working portion thereof in an axial direction away from said inlet end position into an inlet port cut-off position wherein said inlet piston cuts off communication of the inlet port thereof with the working portion thereof and beyond into the working portion thereof,each first inlet piston having a mass generally equal to the mass of a second inlet piston disposed in mirror image relation thereof so as to be statically balanced therewith,a first outlet piston mounted in an associated first cylinder of each of said first plurality of cylinders constructed and arranged to be moved in sealing relation to the associated cylinder from an outlet end position wherein the outlet port thereof is communicated with the working portion thereof in an axial direction away from said outlet end position into an outlet port cut-off position wherein said outlet piston cuts off the communication of the outlet port thereof with the working portion thereof and beyond into the working portion thereof,a second outlet piston mounted in an associated second cylinder of each of said second plurality of cylinders constructed and arranged to be moved in sealing relation to the associated second cylinder from an outlet end position wherein the outlet port thereof is communicated with the working portion thereof in an axial direction away from said outlet end position into an outlet port cut-off position wherein said outlet piston cuts off the communication of the outlet port thereof with the working portion thereof and beyond into the working portion thereof,each first outlet piston having a mass generally equal to the mass of a second outlet piston disposed in mirror image relation thereto so as to be statically balanced therewith,rotor structure within said housing assembly constructed and arranged to move with a rotational movement about said longitudinal axis,a first annular inlet cam disposed annularly about said longitudinal axis on said one side of said central plane,a first inlet cam follower operatively connected between said first annular inlet cam and each of said first inlet pistons so as to effect axial movements thereof in opposite directions during the rotation of the rotor structure about said longitudinal axis,a second annular inlet cam disposed annularly about said longitudinal axis on said opposite side of said central plane,a second inlet cam follower operatively connected between said second annular inlet cam and each of said second inlet pistons so as to effect axial movements thereof in opposite directions during the rotation of the rotor structure about said longitudinal axis,each first inlet cam follower having a mass generally equal to the mass of an associated second inlet cam follower disposed in mirror image relation thereto so as to be statically balanced therewith,a first annular outlet cam disposed annularly about said longitudinal axis on said opposite side of said central plane,a first outlet cam follower operatively connected between said first annular outlet cam and each of said first outlet pistons so as to effect axial movements thereof in opposite directions during the rotation of the rotor structure about said longitudinal axis,a second annular outlet cam disposed annularly about said longitudinal axis on said opposite side of said central plane,a second outlet cam follower operatively connected between said first annular outlet cam and each of said first outlet pistons so as to effect axial movements thereof in opposite directions during the rotation of the rotor structure about said longitudinal axis,each first outlet cam follower having a mass generally equal to the mass of an associated second outlet cam follower disposed in mirror image relation thereto so as to be statically balanced therewith,said first and second inlet and outlet annular cams being configured to move the first and second inlet and outlet pistons respectively within each cylinder through a successive five cycle repeating movement which includes (1) a power cycle wherein said first and second inlet and outlet pistons are moved axially outwardly from combustion positions disposed in closely spaced relation within the working portion of the associated cylinder defining a minimum volume condition into a respective cut-off positions thereof defining a maximum volume condition, (2) an exhaust cycle wherein said first and second outlet pistons are moved from the outlet cut-off position thereof into the outlet end position thereof and said first and second inlet pistons are moved through the working portion thereof into close proximity to said first and second outlet pistons respectively, (3) a transfer cycle wherein said first and second inlet and outlet pistons are moved together in close proximity to each other through the working portion thereof, (4) an intake cycle wherein said first and second outlet pistons are initially moved through the working portion of the associated cylinder while the first and second inlet pistons respectively are in a position allowing communication of the first and second inlet ports respectively with the associated working portions with the final movement of said intake cycle resulting in said first and second inlet and outlet pistons being in compression positions spaced from the respective end positions thereof so that the communication of the respective ports are cut off from the working portion of the associated cylinder, and (5) a compression cycle wherein said first and second inlet and outlet pistons are moved from said compression positions thereof toward each other respectively into said combustion positions,the movements of each first inlet piston and an associated first inlet cam follower being accompanied by an equal and opposite movement of a second inlet piston and an associated second inlet cam follower so that all movements of said first and second inlet pistons and the associated first and second inlet cam followers thereof are dynamically balanced,said first inlet and outlet annular cams being configured to retain said first inlet and outlet pistons substantially in said combustion positions longer than simple harmonic motion for a time sufficient to enable a new fueled gas charge within the minimum volume to be ignited and to rise to maximum pressure before substantial volume increase toward said maximum volume during said power cycle takes place to thereby eliminate negative work resulting from ignition prior to reaching the minimum volume condition and to obtain optimal work from optimal pressure conditions, and said second inlet and outlet annular cams being configured to retain said second inlet and outlet pistons substantially in said combustion positions longer than simple harmonic motion for a time sufficient to enable a new fueled gas charge within the minimum volume to be ignited and to rise to maximum pressure before substantial volume increase toward said maximum volume during said power cycle takes place to thereby eliminate negative work resulting from ignition prior to reaching the minimum volume condition and to obtain optimal work from optimal pressure conditions.