John K Heichelbech

US Patent:

20120160934, Jun 28, 2012

Filed:

Sep 23, 2011

Appl. No.:

13/243096

Inventors:

Chetan Ponnathpur - Columbus IN, US
Stephanie L. Apewokin - Columbus IN, US
Steve Holl - Columbus IN, US
Jim F. Burke - Columbus IN, US
John Heichelbech - Columbus IN, US
Andrew Myer - Greenwood IN, US
Melissa A. Zaczek - Greenwood IN, US
Yongquan Chai - Columbus IN, US
Eric Burmester - Happy Valley OR, US
Nate Garrett - Columbus IN, US

International Classification:

B05B 15/00
A23G 9/28

US Classification:

239289, 137602, 13756501, 137 1

Abstract:

A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.

US Patent:

20220220880, Jul 14, 2022

Filed:

May 9, 2019

Appl. No.:

17/609681

Inventors:

- Columbus IN, US
John K. Heichelbech - Columbus IN, US

Assignee:

Cummins Emission Solutions Inc. - Columbus IN

International Classification:

F01N 3/28
F01N 13/00
F01N 3/20
F01N 3/021
F01N 3/10
F01N 9/00
B01D 53/94
B01J 29/072
B01J 23/745
B01J 19/00
G05D 7/06

Abstract:

An aftertreatment system includes a first exhaust gas path, a second exhaust gas path, and a selector valve configured to divert exhaust gas between the first exhaust gas path and the second exhaust gas path based on a temperature of the exhaust gas. The aftertreatment system also includes a controller programmed to control the selector valve such that the selector valve diverts at least a portion of the exhaust gas to the first exhaust gas path when the temperature of the exhaust gas is equal to or less than a predetermined temperature threshold and the selector valve diverts the exhaust gas to the second exhaust gas path when the temperature of the exhaust gas is greater than the predetermined temperature threshold. The first exhaust gas path includes a heater configured to heat the exhaust gas received in the first exhaust gas path.

US Patent:

20220213822, Jul 7, 2022

Filed:

Mar 22, 2022

Appl. No.:

17/701135

Inventors:

- Columbus IN, US
John K. Heichelbech - Columbus IN, US
Changsheng C. Su - Columbus IN, US

Assignee:

Cummins Emission Solutions Inc. - Columbus IN

International Classification:

F01N 3/032
B01D 46/62
B01D 46/82
B01D 46/00
B01D 46/44
B01D 46/46
B01D 53/94
F01N 3/022
F01N 3/023
F01N 3/035
F01N 3/10
F01N 3/20
F01N 11/00

Abstract:

A filtration assembly for removing particulate matter from exhaust gas produced by an engine, including: a first filter; a second filter positioned downstream of the first filter; and a valve including: a first ring defining a plurality of first openings, and a second ring defining a plurality of second openings, the second ring abutting the first ring. The valve is moveable between a closed position in which the plurality of first openings are misaligned with the plurality of second openings to prevent a fluid from flowing through the plurality of first and second openings, and an open position in which the second ring is rotated relative to the first ring such that the plurality of first openings are aligned with the plurality of second openings allowing the fluid to flow therethrough. A first end of the valve is positioned at an outlet of the first filter, and a second end of the valve is positioned at an inlet of the second filter. In the closed position of the valve, substantially all of the exhaust gas flows through the second filter, and in the open position of the valve, at least a portion of the exhaust gas flows through the valve and bypasses the second filter.

US Patent:

20180028966, Feb 1, 2018

Filed:

Jul 28, 2017

Appl. No.:

15/663457

Inventors:

- Columbus IN, US
John K. Heichelbech - Columbus IN, US
Michael J. Cunningham - Greenwood IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

B01D 53/56
F02M 26/04
B01J 23/44
F01N 3/20
B01J 23/42

Abstract:

An aftertreatment system includes a first oxidation catalyst, a second oxidation catalyst, and a turbocharger. The first oxidation catalyst is upstream of the turbocharger and includes a first oxidation catalyst formulation. The second oxidation catalyst is downstream of the turbocharger and includes a second oxidation catalyst formulation different than the first oxidation catalyst formulation. The second oxidation catalyst formulation is configured to promote conversion of nitric oxide (NO) to nitrogen dioxide (NO).

US Patent:

20160326929, Nov 10, 2016

Filed:

Jul 19, 2016

Appl. No.:

15/213744

Inventors:

- Columbus IN, US
Chetan Ponnathpur - Columbus IN, US
John Heichelbech - Columbus IN, US
George Muntean - Columbus IN, US
Stephen Holl - Columbus IN, US
James F. Burke - Columbus IN, US
John Anthis - Columbus IN, US
Joydeep Chakrabarti - Columbus IN, US
Brandon Simmons - Columbus IN, US
Niklas Schmidt - Madison WI, US
Yogesh V. Birari - Pune IN, US

Assignee:

Cummins Emission Solutions, Inc. - Columbus IN

International Classification:

F01N 3/20
F16K 7/12
F04B 43/02

Abstract:

Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet and provide a combined flow of pressurized gas and urea to an outlet, flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position, the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.

US Patent:

20150128569, May 14, 2015

Filed:

Jan 16, 2015

Appl. No.:

14/598925

Inventors:

- Columbus IN, US
John Heichelbech - Columbus IN, US
Stephanie Apewokin - St. Anthony WI, US
Stephen Holl - Columbus IN, US
James F. Burke - Columbus IN, US

Assignee:

Cummins Emission Solutions, Inc. - Columbus IN

International Classification:

F01N 3/20

US Classification:

60274, 16510431

Abstract:

A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source. A control valve controls the flow of the heat exchange fluid in the heat exchange circuit so that at least one heat exchange cycle includes a circulation period that increases the temperature of the reductant in the doser and storage tank and a termination period where circulation is stopped until reductant temperature in the doser reaches a lower limit.

US Patent:

20150047727, Feb 19, 2015

Filed:

Aug 8, 2014

Appl. No.:

14/455245

Inventors:

- Columbus IN, US
Andrew Morgan Myer - Greenwood IN, US
Mugdha Naik - Columbus IN, US
Shu Zhang - Columbus IN, US
Xin Jin - Columbus IN, US
Srinivasa Varadan Rajagopalan - Ann Arbor MI, US
John K. HEICHELBECH - Columbus IN, US
Stephen M. Holl - Columbus IN, US

Assignee:

Cummins Emission Solutions, Inc. - Columbus IN

International Classification:

F01N 3/20
F01N 3/28
F01N 11/00

US Classification:

13756511, 422105

Abstract:

An example system includes a diaphragm pump having a suction port and a discharge port, a urea suction line fluidly coupling a urea supply to the suction port, and a urea discharge line fluidly coupled to the discharge port. A recirculation line fluidly couples the urea discharge line to the urea suction line, and has a flow regulator operationally coupled thereto. A controller is configured to interpret a prime loss condition of the diaphragm pump, and to provide a flow regulator command in response to the prime loss condition.

US Patent:

20150027553, Jan 29, 2015

Filed:

Aug 22, 2012

Appl. No.:

14/238818

Inventors:

Andrew Myer - Greenwood IN, US
Chetan Ponnathpur - Columbus IN, US
John Heichelbech - Columbus IN, US
George Muntean - Columbus IN, US
Stephen Holl - Columbus IN, US
James F. Burke - Columbus IN, US
John Anthis - Columbus IN, US
Joydeep Chakrabarti - Columbus IN, US
Brandon Simmons - Columbus IN, US

International Classification:

F01N 3/20
F16K 11/10

US Classification:

137 13, 1376254, 137606, 137605

Abstract:

Apparatuses and methods for urea dosing of an exhaust after treatment system are disclosed. Exemplary apparatuses include a chamber configured to receive pressurized gas at a first inlet, receive urea solution at a second inlet, and provide a combined flow of pressurized gas and urea to an outlet, a flow passage extending from the first inlet to a seating surface, and a valve member configured to move between an open position in which the valve member is spaced apart from the seating surface and a closed position in which the valve member contacts the seating surface. As the valve member moves from the open position to the closed position the valve member contacts the seating surface at a first location and wipes an area of the seating surface extending from the first location in a direction toward the flow passage.