Advanced science.  Applied technology.


Multi-Frequency Pulsation Absorber at Cylinder Valve Cap: 8,591,208


A multi-chambered pulsation absorber for attachment over the valve cap opening of a compressor cylinder. Each chamber is in fluid communication with the valve cap opening (or cylinder internal gas passages) via an associated choke tube. Each pairing of a chamber with a choke tube is tuned, in the manner of a Helmholz resonator, to attenuate and nearly eliminate a different cylinder-related pulsation frequency, such as those resulting from internal cylinder pulsations or cylinder nozzle pulsations.

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Eugene L. Broerman III; Danny M. Deffenbaugh; Robert J. McKee