Michael Gary Haas

US Patent:

20200370454, Nov 26, 2020

Filed:

Aug 10, 2020

Appl. No.:

16/989109

Inventors:

- Columbus IN, US
Michael J. Cunningham - Greenwood IN, US
Michael Haas - Columbus IN, US
Govindarajan Kothandaraman - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F01N 3/035
F01N 3/08
F01N 3/10
F01N 3/20
F01N 11/00
F01N 13/00

Abstract:

A method includes acquiring nitrogen oxide (NOx) data indicative of a first amount of NOx in an exhaust flow exiting an engine and a second amount of NOx in the exhaust flow exiting an exhaust aftertreatment system coupled to the engine where the exhaust aftertreatment system including a selective catalytic reduction (SCR) system including a SCR catalyst; determining a NOx conversion efficiency fault is present within the exhaust aftertreatment system based on the first amount of NOx and the second amount of NOx; monitoring an actual amount of NOx in the exhaust flow downstream of the SCR catalyst; determining an expected amount of NOx downstream of the SCR catalyst; and determining the SCR catalyst is responsible for the NOx conversion efficiency fault in response to the actual amount of NOx differing from the expected amount of NOx by more than a threshold amount.

US Patent:

20200340381, Oct 29, 2020

Filed:

Jul 13, 2020

Appl. No.:

16/927727

Inventors:

- Columbus IN, US
Apurva Arvind Chunodkar - Greenwood IN, US
Michael Haas - Columbus IN, US
Astha Kukreja - Boston MA, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F01N 3/20
F01N 11/00
F01N 3/10
F01N 13/00

Abstract:

A system has a pump and an injector coupled to the pump. The system further comprises a controller coupled to the pump and the injector. The controller is structured to: determine a change of reductant flow relative to a change of pump rate of the pump; and generate a status command indicative of at least one of an under-restricted injector or an over-restricted injector in response to the determination of the change of reductant flow relative to the change of pump rate of the pump.

US Patent:

20200031332, Jan 30, 2020

Filed:

Jul 17, 2019

Appl. No.:

16/514753

Inventors:

- Columbus IN, US
Apurva A. Chunodkar - Greenwood IN, US
Arun Prakash Thunga Gopal - Columbus IN, US
Feng Liu - Columbus IN, US
Kenneth M. Follen - Greenwood IN, US
Michael Haas - Columbus IN, US
Pinak Jayant Tulpule - Columbus IN, US
Vivek A. Sujan - Columbus IN, US

International Classification:

B60W 20/10
F01N 3/20
F02D 41/02
B60W 10/06
B60W 10/08
B60W 10/30
B60W 30/18
B60W 50/00

Abstract:

A vehicle comprises an aftertreatment system configured to reduce constituents of an exhaust gas. The vehicle also includes a controller configured to determine a predicted load on the vehicle during a route, and adjust at least one of a temperature of the aftertreatment system or an amount of a reductant inserted into the aftertreatment system based on the predicted load.

US Patent:

20190299974, Oct 3, 2019

Filed:

Apr 1, 2019

Appl. No.:

16/371890

Inventors:

- Columbus IN, US
Jennifer Kay Light-Holets - Greenwood IN, US
Michael Haas - Columbus IN, US

International Classification:

B60W 20/16
F02D 29/02
F01N 3/20
B60W 20/13
F01N 3/035

Abstract:

Systems and methods to control operation of a system based on aftertreatment interaction include a controller structured to receive one or more parameters associated with an exhaust aftertreatment system of an electric vehicle, where the one or more parameters are associated with an aftertreatment event associated with the aftertreatment system, determine an operation state of the system based on the one or more parameters, and generate a command structured to adjust operation of the system responsive to the determination of the operation state.

US Patent:

20190001270, Jan 3, 2019

Filed:

Jul 29, 2016

Appl. No.:

15/748972

Inventors:

- Columbus IN, US
Michael J. Cunningham - Greenwood IN, US
Michael Haas - Columbus IN, US
Yuhui Zha - Columbus IN, US
Mert Zorlu - Greenwod IN, US

Assignee:

Cummins Emission Solutions Inc. - Columbus IN

International Classification:

B01D 53/94
F01N 3/20
F01N 3/023

Abstract:

An exhaust aftertreatment system includes a diesel oxidation catalyst in exhaust gas receiving communication with an engine. A selective catalytic reduction catalyst on filter (SCR on filter) is positioned downstream of the diesel oxidation catalyst. A hydrocarbon doser is configured to inject hydrocarbons into a flow of the exhaust gas upstream of the diesel oxidation catalyst. A reductant doser is configured to inject reductant into the flow of the exhaust gas upstream of the SCR on filter and downstream of the diesel oxidation catalyst. An aftertreatment controller is operatively coupled to the hydrocarbon doser. The aftertreatment controller is configured to control a dosing rate at which the hydrocarbon doser injects hydrocarbons into the flow of the exhaust gas so as to cause regeneration of the SCR on filter.

US Patent:

20190003362, Jan 3, 2019

Filed:

Jan 12, 2017

Appl. No.:

16/069106

Inventors:

- Columbus IN, US
Apurva Arvind Chunodkar - Greenwood IN, US
Michael Haas - Columbus IN, US
Astha Kukreja - Boston MA, US

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

F01N 3/20
F01N 11/00
F01N 3/10
F01N 13/00

Abstract:

An apparatus includes a pump, a delivery mechanism in fluid communication with the pump, and a controller communicatively coupled to the pump and the delivery mechanism. The controller is structured to interpret, via a pump diagnostic circuit, first and second pump parameters indicative of first and second pump rates, interpret, via a dosing diagnostic circuit, first and second dosing parameters indicative of at least one of (i) first and second reductant flows or (ii) first and second injector characteristics, determine, via a delivery diagnostic circuit, a delivery status based, at least in part, on the interpretation of the first and second pump parameters and the first and second dosing parameters, and generate, via the delivery diagnostic circuit, a status command indicative at least one of an under-restricted delivery mechanism or an over-restricted delivery mechanism in response to the determination of the delivery status.

US Patent:

20180142590, May 24, 2018

Filed:

Jan 10, 2018

Appl. No.:

15/866776

Inventors:

- Columbus IN, US
Michael J. Cunningham - Greenwood IN, US
Michael Haas - Columbus IN, US
Govindarajan Kothandaraman - Columbus IN, US

International Classification:

F01N 3/035
F01N 3/08
F01N 3/10
F01N 3/20
F01N 11/00
F01N 13/00

Abstract:

A method includes interpreting NOx data indicative of an amount of NOx exiting an engine and an amount of NOx exiting an exhaust aftertreatment system coupled to the engine, determining a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system, and determining at least one of a selective catalytic reduction (SCR) catalyst of the exhaust aftertreatment system and a diesel particulate filter having a coating of a SCR reaction catalyst (DPF-SCR) of the exhaust aftertreatment system are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.

US Patent:

20170051654, Feb 23, 2017

Filed:

Aug 19, 2015

Appl. No.:

14/830112

Inventors:

- Columbus IN, US
Michael J. Cunningham - Greenwood IN, US
Michael Haas - Columbus IN, US
Govindarajan Kothandaraman - Columbus IN, US

International Classification:

F01N 11/00
F01N 3/035
F01N 3/20

Abstract:

An apparatus includes a nitrogen oxide (NOx) module and a selective catalytic reduction (SCR) diagnostic module. The NOx module is in exhaust gas communication with an exhaust flow of an exhaust aftertreatment system from an engine. The NOx module is structured to interpret NOx data indicative of an amount of NOx exiting the engine and an amount of NOx exiting the exhaust aftertreatment system, and determine a NOx conversion efficiency fault is present based on the amount of NOx exiting the engine and the amount of NOx exiting the exhaust aftertreatment system. The SCR diagnostic module is structured to determine at least one of a SCR catalyst and a diesel particulate filter including a coating of a SCR reaction catalyst (DPF-SCR) are responsible for the NOx conversion efficiency fault based on at least one of a reductant slip amount and a NOx conversion value across at least one of the SCR catalyst and the DPF-SCR.