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Turbocharged internal combustion engine

  • US 5,611,202 A
  • Filed: 03/31/1995
  • Issued: 03/18/1997
  • Est. Priority Date: 05/11/1994
  • Status: Expired due to Term
First Claim
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1. A turbocharged internal combustion engine including at least first and second exhaust gas turbochargers arranged in parallel, each comprising a turbine with an inlet end and an outlet end and a compressor with a pressure side and a suction side, said internal combustion engine having an air intake with an air supply conduit having first sections leading to said compressors and second sections extending from the pressure side of each compressor to an engine intake, said engine having an exhaust with an exhaust conduit connected to the inlet end of each of said turbines, the turbine of said second exhaust gas turbocharger including a control arrangement for controlling the flow of exhaust gases therethrough, and an exhaust gas recirculation conduit extending between said exhaust conduit and said first section of the air supply conduit of said second exhaust gas turbocharger so that the exhaust gas recirculated through said recirculation conduit can be compressed by said second exhaust gas turbocharger, said first section of said air supply conduit of said second turbocharger including a check valve and said recirculation conduit being connected to said exhaust conduit upstream of the turbine of said second exhaust gas turbocharger and to said air supply conduit downstream of said check valve.

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