Varies Compression Space Patents (Class 123/73AC)
  • Variable volume crankcase scavenge control
    Patent number: 4955333
    Abstract: A crankcase scavenged two cycle engine is provided with a supplemental variable volume chamber or plenum connected with the crankcase chamber for each cylinder to controllably vary the effective volume of the crankcase chambers and thereby control scavenging pressure. Control methods for providing more consistent scavenging and more efficient charge control are disclosed.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: September 11, 1990
    Assignee: General Motors Corporation
    Inventor: Edward D. Klomp
  • Method and apparatus for improving performance of two-cycle gasoline engine
    Patent number: 4261306
    Abstract: The rotating combustible mixture in the crankcase of a two-cycle gasoline engine is scooped into the transfer duct leading to the cylinder by a plurality of vanes extending over the crankcase flywheel and in close juxtaposition thereto.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: April 14, 1981
    Inventor: Eric D. Gorr
  • 2-Cycle engine of an active thermoatmosphere combustion
    Patent number: 4242993
    Abstract: A 2-cycle engine having a transfer passage communicating the crank room with the combustion chamber. An accumulation tank having a volume which is larger than the stroke volume of the piston is arranged in the transfer passage. A reed valve is arranged in the transfer passage between the crank room and the accumulation tank.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: January 6, 1981
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventor: Sigeru Onishi