Internal combustion engine having dedicated EGR cylinder(s) with split fuel injection timing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 19, 2017
Grant Date -
Nov 16, 2017
app pub date -
May 14, 2016
filing date -
May 14, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
First Claim
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Family
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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SOUTHWEST RESEARCH INSTITUTE | 6220 CULEBRA ROAD SAN ANTONIO TX 78238-5166 |
International Classification(s)

- 2016 Application Filing Year
- F02M Class
- 1722 Applications Filed
- 1301 Patents Issued To-Date
- 75.56 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chadwell, Christopher J | San Antonio, US | 11 | 56 |
# of filed Patents : 11 Total Citations : 56 | |||
Denton, Bradley D | San Antonio, US | 1 | 2 |
# of filed Patents : 1 Total Citations : 2 | |||
Gukelberger, Raphael | San Antonio, US | 13 | 97 |
# of filed Patents : 13 Total Citations : 97 |
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Patent Citation Ranking
- 1 Citation Count
- F02M Class
- 17.36 % this patent is cited more than
- 8 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 19, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 19, 2029 |
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Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Mar 22, 2016 | I | Issuance | |
Mar 02, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Sep 13, 2012 | P | Published | |
Aug 27, 2012 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COHEN, TODD J.;REEL/FRAME:030265/0584 Owner name: NEXUS CONTROL SYSTEMS, LLC, NEW YORK Effective Date: Aug 27, 2012 |
Mar 08, 2012 | F | Filing |

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