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Two-stroke engine and components thereof

  • US 10,690,043 B2
  • Filed: 04/18/2019
  • Issued: 06/23/2020
  • Est. Priority Date: 04/18/2018
  • Status: Active Grant
First Claim
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1. A piston arrangement for an engine, comprising:

  • a crankshaft located within a crank case;

    a primary piston located within a first cylinder and interconnected to said crankshaft by a first drive rod for converting reciprocating motion of said primary piston within said first cylinder driven by combustion occurring within said first cylinder into rotational motion of said crankshaft; and

    a pumping piston located within a second cylinder and interconnected to said crankshaft by a second drive rod for converting the rotational motion of said crankshaft into reciprocating motion of said pumping piston within said second cylinder;

    said pumping piston being located between said primary piston and the crank case and sealing said first and second cylinders from the crankcase; and

    the reciprocating motion of said pumping piston within said second cylinder aids in drawing fresh air or air-and-fuel mixture into the first and second cylinders for a new cycle and aids in pushing exhausted gas-charge of a previous cycle out through an exhaust port.

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