High speed rotary engine and ignition system
OwnerDavid B. Wittryinventor
Life of this patent
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Abstract
A rotary engine in which two rotors having interleaving radial vanes move with cyclic rotary motion superposed on uniform rotary motion inside a cylindrical cavity in a cooled engine housing. The rotor vanes divide the cylindrical cavity into four compartments in which intake, compression, explosion and exhaustion occur. The rotor motion is obtained by a gear and linkage system made up of an internal gear which rolls on a fixed external gear. The internal gear, having a pitch diameter of 3/2 the pitch diameter of the external gear, is contained in a moving housing that has crank pins that move in epicycloidal curves. Each crank pin is coupled to a crank on one of the rotors. Ignition timing is done by sensing the motion of the internal gear housing using magnetic means or optical means.
Claims20
A rotary engine comprising:
- a) two interdigitated rotors rotatably moveable in a cylindrical cavity in an engine housing having a cooling means and inlet and outlet ports, each of said rotors having a hub, and two radial vanes, said vanes of the first of said rotors extending over the hub of the second of said rotors so that a seal is formed between the first said rotor and the second said rotor and between said rotors and said housing, whereby the cylindrical cavity is divided into four compartments,
- b) an output gear drive containing an external gear, an internal gear, and an output shaft having an eccentric portion, said external gear being coaxial with said output shaft and having a fixed angular position relative to said housing, said internal gear meshing with said external gear and being contained in a moveable housing that is constrained to orbit about the axis of said output shaft by said eccentric portion, said moveable housing having at least one crank pin which moves in an epicycloidal path, said crank pin being linked to one of said rotors by a moveable connecting means whereby this said rotor is constrained to move with periodic rotary motion superposed on uniform rotary motion.
A rotary engine comprising:
- a) two interdigitated rotors rotatably moveable in a cylindrical cavity in an engine housing having a cooling means and inlet and outlet ports, each of said rotors having a hub, and two radial vanes, said vanes of the first of said rotors extending over the hub of the second of said rotors so that a seal is formed between the first said rotor and the second said rotor and between said rotors and said housing, whereby the cylindrical cavity is divided into four compartments,
- b) an output gear drive containing an external gear, an internal gear, and an output shaft having an eccentric portion, said external gear being coaxial with said output shaft and having a fixed angular position relative to said housing, said internal gear meshing with said external gear and being contained in a moveable housing that is constrained to orbit about the axis of said output shaft by said eccentric portion, said moveable housing having at least one crank pin which moves in an epicycloidal path, said crank pin being linked to one of said rotors by a moveable connecting means whereby this said rotor is constrained to move with periodic rotary motion superposed on uniform rotary motion,
- c) two permanent magnets contained in said moveable housing and four sensors contained in said engine housing which detect the passing of said magnets over said sensors for the purpose of ignition timing.
Dependencies are inferred from the claim text.