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Adiabatic, two-stroke cycle engine having piston-phasing and compression ratio control system

  • US 5,507,253 A
  • Filed: 09/23/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 08/27/1993
  • Status: Expired due to Term
First Claim
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1. A reciprocating internal combustion engine comprising:

  • at least two cylinders, each of said cylinders having a first end and a second end;

    a pair of opposed pistons in each of said cylinders, each of said pistons comprising a piston head and a piston rod;

    a pair of double harmonic barrel cams mounted on a shaft parallel and symmetrical with said cylinders, said cams connected to said piston rods to impart axial motion thereto;

    each of said cams having a centrally disposed cam wheel affixed to said shaft;

    an axially movable cam rim mounted to the peripheral surface of each of said cam wheels;

    a cam ring affixed to the peripheral surface of each of said cam rims;

    an annular space between each of said cam wheels and each of said movable cam rims;

    means for controlling the volume of each of said annular spaces to change the axial position of said respective rim with respect to said respective wheel; and

    one or more means for rotating each of said rims with respect to said respective wheel, independently of the change of axial position.

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