Nicholas R Lewis

US Patent:

20230031074, Feb 2, 2023

Filed:

Oct 10, 2022

Appl. No.:

17/962974

Inventors:

- Columbus IN, US
Joshua Alan Lantz - North Vernon IN, US
Vaibhav J. Lawand - Greenwood IN, US
Nicholas R. Lewis - Elizabethtown IN, US
Ian W. McGiffen - Scipio IN, US
Arulkumaran Muthukumarasamy - Greenwood IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F01N 3/20
B01D 53/94
F02D 41/00
F02D 41/02
F02D 41/04

Abstract:

A method includes determining that at least one diesel emissions fluid (DEF) doser of an exhaust aftertreatment system is likely frozen based on at least one of an ambient air temperature or a DEF source temperature; operating an engine in a cylinder cutout mode in response to the determination that the at least one DEF doser is likely frozen; and, discontinuing the cylinder cutout mode in response to determining that the at least one DEF doser is in a predefined condition.

US Patent:

20210404366, Dec 30, 2021

Filed:

Sep 10, 2021

Appl. No.:

17/471826

Inventors:

- Columbus IN, US
Joshua Alan Lantz - North Vernon IN, US
Vaibhav J. Lawand - Greenwood IN, US
Nicholas R. Lewis - Elizabethtown IN, US
Ian W. McGiffen - Scipio IN, US
Arulkumaran Muthukumarasamy - Greenwood IN, US

International Classification:

F01N 3/20
F02D 41/00
F02D 41/02
F02D 41/04
B01D 53/94

Abstract:

A system includes an exhaust aftertreatment system in exhaust gas receiving communication with an engine including a plurality of cylinders where the engine is structured to operate according to low load conditions and where a controller is structured to determine that at least one diesel emissions fluid (DEF) doser is frozen based on at least one of an ambient air temperature and a DEF source temperature. The controller is structured to operate the engine according to a skip-fire mode in response to a DEF flag indicating that the at least one DEF doser is frozen. The skip-fire mode comprises firing a portion of the plurality of cylinders that is less than a total amount of cylinders of the plurality of cylinders. The controller is structured to discontinue the skip-fire mode in response to determining that the at least one DEF doser is likely thawed.

US Patent:

20200018208, Jan 16, 2020

Filed:

Jul 10, 2018

Appl. No.:

16/031190

Inventors:

- Columbus IN, US
Arulkumaran Muthukumarasamy - Greenwood IN, US
Nicholas Ray Lewis - Columbus IN, US
Vaibhav J. Lawand - Greenwood IN, US

Assignee:

Cummins Emission Solutions Inc. - Columbus IN

International Classification:

F01N 3/20
F01N 3/28
F01N 9/00

Abstract:

A system comprises a tank header configured to couple to a reductant tank and a heating mechanism positioned proximate to the tank header. The heating mechanism is configured to heat at least a portion of the tank header. The system may further comprise a conduit configured to pass reductant from the reductant tank and a junction configured to receive reductant from the reductant tank.

Author:

Nicholas Lewis

ISBN #:

0077075803