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Apparatus and method for engine performance evaluation

  • US 7,254,477 B1
  • Filed: 03/17/2006
  • Issued: 08/07/2007
  • Est. Priority Date: 03/17/2005
  • Status: Active Grant
First Claim
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1. An internal combustion engine comprisinga variable volume internal combustion engine including an intake with air flow therethrough;

  • an air density sensor disposed in the intake and producing an output signal that is a function of the density of the air in the intake;

    a display in communication with the air density sensor displaying the output signal in units selected from a group consisting of density, density divided by a predetermined value, percent density gain or loss, power output, power output divided by a predetermined value and power output gain or loss.

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