Logic for improved delta pressure based soot estimation on low restriction particulate filters

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11994056
SERIAL NO

18118290

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Estimating soot comprises connecting exhaust pipe to engine, exhaust pipe has diesel oxidation catalyst and diesel particulate filter. Fuel injector is connected to exhaust pipe upstream from diesel oxidation catalyst and diesel particulate filter. Delta exhaust pressure sensor measures difference in exhaust pressure at inlet and outlet to diesel particulate filter. Controller is connected to fuel injector and to delta exhaust pressure sensor. Controller determines when to conduct active regeneration of diesel particulate filter based on estimated amount of soot accumulated therein. Controller, in first regeneration mode, causes fuel injector to inject fuel at first rate into exhaust stream, and re-evaluates soot accumulated within diesel particulate filter under increased volumetric flow of exhaust stream. Controller, in second regeneration mode, causes fuel injector to inject fuel at second rate, larger than first rate, into exhaust stream to combust soot trapped in diesel particulate filter.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY LLC2701 NAVISTAR DRIVE LISLE IL 60532

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Charintranond, Paul Boon Palatine, US 9 10
Singh, Navtej Arlington Heights, US 37 530

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Nov 28, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 28, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 28, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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