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VALVE

  • US 20140053933A1
  • Filed: 11/01/2013
  • Published: 02/27/2014
  • Est. Priority Date: 07/19/2011
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a cylinder configured to receive a piston and defining a first port;

    a mechanical linkage comprising a piston rod configured to transmit out of the cylinder, a power of gas expanding against the piston;

    an element configured to effect gas-liquid heat exchange with gas in the cylinder in an absence of combustion; and

    a first valve comprising,a first valve element moveable relative to the first port,a second valve element selectively rotatable relative to the first valve element to control a duration of opening of the first port, anda third valve element selectively moveable to control a starting point of opening of the first port.

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