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Power train system

  • US 10,458,347 B2
  • Filed: 07/27/2015
  • Issued: 10/29/2019
  • Est. Priority Date: 07/27/2015
  • Status: Active Grant
First Claim
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1. A power train system comprising:

  • a spark ignition type internal combustion engine;

    a gas component separation device which extracts a plurality of gas components having different specific heat ratios from an exhaust gas of the internal combustion engine;

    a recirculation device which recirculates the plurality of gas components to a combustion chamber of the internal combustion engine; and

    a gas components ratio adjustment device which adjusts a ratio of the plurality of gas components recirculated to the combustion chamber in response to an operation state or a fuel property state of the internal combustion engine,wherein the gas components having different specific heat ratios are a gas component having a relatively large specific heat ratio and a gas component having a relatively small specific heat ratio, andwherein the gas components ratio adjustment device increases a ratio of the gas component having a relatively large specific heat ratio when an engine torque of the internal combustion engine is lower than a predetermined value and increases a ratio of the gas component having a relatively small specific heat ratio when the engine torque is higher than the predetermined value.

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