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EGR Apparatuses systems and methods

  • US 20090235661A1
  • Filed: 03/21/2008
  • Published: 09/24/2009
  • Est. Priority Date: 03/21/2008
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an exhaust conduit;

    a first EGR cooler flow coupled to the exhaust conduit and operable to cool exhaust received from the exhaust conduit;

    a compressor flow coupled to the first EGR cooler and operable to compress exhaust received from the first EGR cooler;

    a second EGR cooler flow coupled to the compressor and operable to cool exhaust received from the compressor; and

    an expander flow coupled to the second EGR cooler and operable to cool exhaust received from the second EGR cooler to a sub-ambient temperature.

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