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Control system and method for estimating turbocharger performance

  • US 20070227139A1
  • Filed: 03/30/2006
  • Published: 10/04/2007
  • Est. Priority Date: 03/30/2006
  • Status: Active Grant
First Claim
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1. A control system for estimating performance of a compressor, comprising:

  • a compressor fluidly connected to an inlet manifold of a power source and being configured to receive a mixed flow of air and exhaust;

    a power source speed sensor associated with an output of the power source and being configured to provide an indication of a rotational speed of the power source;

    an inlet pressure sensor associated with the inlet manifold and being configured to provide an indication of a pressure of a fluid within the inlet manifold;

    an inlet temperature sensor associated with the inlet manifold of the power source and being configured to provide an indication of a temperature of the fluid within the inlet manifold;

    an atmospheric pressure sensor configured to provide an indication of an atmospheric pressure; and

    a control module in communication with the power source speed sensor, inlet pressure sensor, inlet temperature sensor, and atmospheric pressure sensor, the control module being configured to;

    monitor;

    an engine valve opening duration; and

    an exhaust gas recirculation valve position; and

    estimate a compressor inlet pressure based on the provided indications, the monitored engine valve opening duration, and the monitored exhaust gas recirculation valve position.

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