Patents Assigned to Bulga Ash Pty. Ltd.
  • Exhaust system for an internal combustion engine
    Patent number: 5218819
    Abstract: An exhaust system for a two-cycle internal combustion engine provides for maximum efficiency of the engine by displacing the baffle member to vary the effective volume of baffle chamber. Additionally, a method is provided for producing maximum engine power over a wide range of engine speeds by returning high amplitude pulses to the exhaust port at the correct timing for various speeds.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: June 15, 1993
    Assignee: Bulga Ash Pty. Ltd.
    Inventor: Ronald W. Cruickshank