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TURBO-CHARGED INTERNAL COMBUSTION ENGINE WITH IN-CYLINDER EGR AND INJECTION RATE SHAPING

  • US 20050139175A1
  • Filed: 03/30/2004
  • Published: 06/30/2005
  • Est. Priority Date: 02/28/2002
  • Status: Active Grant
First Claim
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1. A method of controlling combustion in an internal combustion engine comprising the steps of:

  • transferring a first quantity of fuel and first post-combustion gases to a combustion chamber through an exhaust port to raise a temperature of said first quantity of fuel while an exhaust port pressure in said exhaust port is higher than a first combustion chamber pressure;

    transferring pre-combustion gases into said combustion chamber at said first combustion chamber pressure;

    mixing said first quantity of fuel, said pre-combustion gases, and said first post-combustion gases to form a substantially homogenous mixture;

    substantially sealing said exhaust port from said combustion chamber;

    adding heat to said combustion chamber by raising said first combustion chamber pressure to a second combustion chamber pressure substantially higher than said first combustion chamber pressure;

    transferring a second quantity of fuel to said combustion chamber;

    substantially combusting said first and second quantities of fuel with said heat to form second post-combustion gases;

    exhausting said second post-combustion gases through said exhaust port.

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