Patent ID: 7228825

Claim:
A two-stroke engine assembly comprising: a cylinder; a piston disposed in said cylinder to undergo an up and down reciprocating movement; said piston and said cylinder conjointly defining a combustion chamber; an air filter; an air channel for supplying substantially fuel-free combustion air to said cylinder with a first pressure wave developing in said air channel during operation of said two-stroke engine; a mixture channel for supplying an air/fuel mixture to said cylinder with a second pressure wave also developing in said mixture channel during operation of said engine; said air channel and said mixture channel connecting said cylinder to said air filter; a component common to said air channel and said mixture channel; a section of said air channel and a section of said mixture channel being guided in said component; said air channel being of a first length and said mixture channel being of a second length; and, said first length and said second length being matched to each other so as to cause said first and second pressure waves in said air channel and said mixture channel to oscillate in phase.