US 4,976,227 AGranted

Internal combustion engine intake and exhaust valve control apparatus

OwnerDavid J. Draperinventor

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Abstract

An intake and exhaust valve control apparatus includes a pair of valves rotatably disposed in a body mounted in association with a cylinder of an internal combustion engine. Each valve includes a through bore selectively disposed between ports in the body in fluid flow communication with the cylinder. Magnets of opposed polarity are mounted on one end of the valve. A magnetically coupled core and coil are associated with the magnets and are positioned to repel and attract certain of the magnets to rotate the valve between first and second positions when current flows in one of two directions in the coil and induces a magnetic field in the core. The coil is connected to a control module which supplies electric currents in opposed directions at predetermined times in the engine cycle to rotate the valves between fluid flow and fluid blocking positions with respect to the cylinder.

Claims10

Dependent claims

An intake and exhaust valve control apparatus for an internal combustion engine having a reciprocal piston mounted in a cylinder, the apparatus comprising:

a body mountable on the engine, the body having inlet and outlet ports extending therethrough disposed in fluid flow communication with the cylinder in the engine;
first and second horizontally extending through bores formed in the body, the first through bore intersecting the inlet port, the second through bore intersecting the exhaust port in the body;
first and second valves rotatably mounted in the first and second through bores, respectively, each of the first and second valves having a through bore extending therethrough substantially perpendicular to the axial length of the valve;
magnet means of opposed polarity mounted on one end of each of the first and second valves;
magnetic core means mounted on the body and disposed in magnetic coupled relationship with the magnet means;
a coil mounted on the magnetic core means for inducing a magnetic field in the magnetic core when electric current flows through the coil;
and
control means, connected to the coil, for generating an electric current in the coil of one of two opposed directions, for inducing a magnetic field in the magnetic core having one of first and second magnetic field orientations to cause selective rotation of the magnet means and the first and second valve means between first and second positions in which the through bore in each of the first and second valve means alternates between fluid flow communicating and fluid flow blocking positions between the inlet and outlet ports in the body.

5 more elements

A rotary valve control apparatus for an internal combustion engine having a piston reciprocally mounted in a cylinder, the rotary valve having a through bore rotating between first and second positions and disposed in fluid flow communication with the cylinder only in one of the first and second positions, the apparatus comprising:

first and second magnets of opposed polarity mounted on the valve in circumferentially spaced relationship;
a magnetic core disposed in magnetic coupling relationship with the first and second magnets;
a coil wound in a plurality of winding turns on the magnetic core;
and
control means, connected to the coil, for supplying an electric current to the coil in one of first and second opposed directions to induce a magnetic field in the magnetic core having one of first and second magnetic field orientations to cause selective rotation of the magnet means and the valve between first and second positions in which the through bore in the valve moves between fluid flow and fluid blocking positions with respect to the cylinder.

2 more elements

Dependencies are inferred from the claim text.