Patent ID: 7765962
Filing Date: 2010-08-03
Classification: F01C,F02B,F02F,Y02T

Abstract:
1. A reciprocating piston and rotary piston engine comprising a housing containing a rotor as well as a series of openings in which reciprocating pistons move up and down, the rotor including a rotary piston having a series of active surfaces between vertices of two, four, six . . . n active surfaces corresponding to a number of the active surfaces of the rotary piston with a corresponding number of active surfaces of the reciprocating pistons and alternately linkable chambers with a fuel supply, a carburation and an exhaust gas outlet, a profile of the active surfaces of the rotary piston and of the reciprocating pistons being determined by the following equations: xy=reference system originating in a center of rotation of the crank (rotation axis of the a crank shaft); r=crank length (radius between rotation axis of the crank shaft and the corresponding crank); d=connecting rod length; φ=angle of the crank with respect to a reference axis (expressed in radians); ψ=circle inscribing the rotor; XY=the reference system on which ψ is centered; R=radius of the circle ψ; N=number of rotor flanks=number of crank gears=number of partitions of the circle ψ; i=incidence line of the piston applied on a middle point of a corresponding arc; P P α=incidence angle of the piston measured in the point P L=arc of ψ of a corresponding piston, between P C=chord “L”, drawn between P S=piston width=calculation area of the piston profile=distance between two lines running parallel to the incidence line “i” and applied to the points P s=dephasing angle: incidence angle of the piston, measured with respect to an axis X of the reference system XY of ψ; m=line crossing the point P β=angle between a line “m” and a line “i”: a first orthogonal line to the tangent of ψ crossing P X′Y′=another reference system centered on the reference system XY, but rotated with respect to the latter according to the angle=“s”; a profile of an active flank of the reciprocating piston is