Systems and methods for recirculation of engine exhaust gas within an exhaust system having a buffer tank

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11788455
SERIAL NO

18055437

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Methods and systems are provided for recirculation of an engine exhaust gas. The system includes an engine, an exhaust system configured to channel exhaust gas from the engine to an outlet, an aftertreatment device, an exhaust recirculation system configured to divert at least some of the exhaust gas as recirculated exhaust gas from a first position in the exhaust system downstream of the aftertreatment device, through a buffer tank, and to a second position in the exhaust system upstream of the aftertreatment device, wherein the recirculated exhaust gas is combined with the exhaust gas at the second position, a controller configured to, by a processor, selectively operate the exhaust recirculation system to control the exhaust recirculation system to divert the exhaust gas and thereby cause the recirculated exhaust gas to be treated with the aftertreatment device more than once with sequentially increased catalyst temperatures.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLC300 RENAISSANCE CENTER DETROIT MI 48265-3000

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hattar, Rafat F Royal Oak, US 27 98
Liu, Chengke Novi, US 5 0

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 Apr 17, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 17, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 17, 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