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PISTON ENGINE

  • US 20100242472A1
  • Filed: 09/03/2008
  • Published: 09/30/2010
  • Est. Priority Date: 09/05/2007
  • Status: Active Grant
First Claim
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1. A piston engine, comprising:

  • at least one cylinder that has at least a first discharge valve and a second discharge valve; and

    a double overhead camshaft for controlling the first and a second discharge valves,wherein the double overhead camshaft includes an inner shaft, which has at least one first cam for controlling the first discharge valve, and an outer shaft that is coaxial to said first inner shaft and has at least one second cam for controlling the second discharge valve, andwherein the inner shaft and the outer shaft are rotationally adjustable relative to one another to change the discharge timing of the first and second discharge valves.

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