Internal combustion engine having dedicated EGR cylinder(s) with split fuel injection timing

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United States of America Patent

PATENT NO 9845747
APP PUB NO 20170328289A1
SERIAL NO

15154966

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Abstract

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A method of controlling fuel injection to the cylinders of an internal combustion engine, the engine having exhaust gas recirculation (EGR) from at least one dedicated EGR (D-EGR) cylinder, with the other cylinders being main cylinders. The D-EGR cylinder is run at a richer equivalence ratio than the main cylinders, with the goal of providing increased H2 and CO in the recirculated exhaust. The rich limit of the D-EGR cylinder is maximized by dividing the fuel injection into multiple fuel injection events, with each fuel injection event occurring during the intake valve lift period of the engine cycle.

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SOUTHWEST RESEARCH INSTITUTE6220 CULEBRA ROAD SAN ANTONIO TX 78238-5166

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  • 2016 Application Filing Year
  • F02M Class
  • 1722 Applications Filed
  • 1301 Patents Issued To-Date
  • 75.56 % Issued To-Date
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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chadwell, Christopher J San Antonio, US 11 56
Denton, Bradley D San Antonio, US 1 2
Gukelberger, Raphael San Antonio, US 13 97

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  • 1 Citation Count
  • F02M Class
  • 17.36 % this patent is cited more than
  • 8 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges150635651021101 - 1011 - 2021 - 3031 - 4041 - 5051 - 60050100150200250300350400450500550600650700

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