Patents by Inventor A. Carl McDonald, Jr.
A. Carl McDonald, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11519310Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.Type: GrantFiled: February 15, 2019Date of Patent: December 6, 2022Assignee: Cummins Emission Solutions Inc.Inventors: Changsheng C. Su, A. Carl McDonald, Jr., Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
-
Publication number: 20220178285Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.Type: ApplicationFiled: February 15, 2019Publication date: June 9, 2022Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Changsheng C. Su, A. Carl McDonald, JR., Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
-
Patent number: 11286826Abstract: Various embodiments relate to a selective catalytic reduction system for treating exhaust gases of an internal combustion engine. The system includes an inlet section that receives exhaust gases from the engine. The system includes a tank storing diesel exhaust fluid (“DEF”), a pump, a valve, and an injector each in fluid communication with each other. The injector is coupled to the inlet exhaust pipe and configured to inject DEF into the exhaust gases flowing through the inlet exhaust pipe in a plurality of pulses. Each of the plurality of pulses injects a constant volume of DEF into the inlet exhaust pipe. The system further includes a controller configured to operate the pump and the valve such that a time interval between successive constant volume pulses of the plurality of pulses is varied based on a variable oxides of nitrogen content of the exhaust gases.Type: GrantFiled: September 16, 2019Date of Patent: March 29, 2022Assignee: Cummins Emission Solutions, Inc.Inventors: Douglas Mitchell, A. Carl McDonald, Jr.
-
Patent number: 11141696Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.Type: GrantFiled: August 20, 2020Date of Patent: October 12, 2021Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, A. Carl McDonald, Jr., Kenneth R. Federle, John G. Buechler, Scott Lubenow, Arvind V. Harinath
-
Publication number: 20200376432Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Applicant: Cummins Emission Solutions, Inc.Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, A. Carl McDonald, JR., Kenneth R. Federle, John G. Buechler, Scott Lubenow
-
Patent number: 10786783Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.Type: GrantFiled: January 23, 2020Date of Patent: September 29, 2020Assignee: Cummins Emission Solutions, Inc.Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, A. Carl McDonald, Jr., Kenneth R. Federle, John G. Buechler, Scott Lubenow
-
Publication number: 20200156004Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysis.Type: ApplicationFiled: January 23, 2020Publication date: May 21, 2020Applicant: Cummins Emission Solutions, Inc.Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, A. Carl McDonald, JR., Kenneth R. Federle, John G. Buechler, Scott Lubenow
-
Patent number: 10576419Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.Type: GrantFiled: September 7, 2018Date of Patent: March 3, 2020Assignee: Cummins Emission Solutions, Inc.Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, A. Carl McDonald, Jr., Kenneth R. Federle, John G. Buechler, Scott Lubenow
-
Publication number: 20200011224Abstract: Various embodiments relate to a selective catalytic reduction system for treating exhaust gases of an internal combustion engine. The system includes an inlet section that receives exhaust gases from the engine. The system includes a tank storing diesel exhaust fluid (“DEF”), a pump, a valve, and an injector each in fluid communication with each other. The injector is coupled to the inlet exhaust pipe and configured to inject DEF into the exhaust gases flowing through the inlet exhaust pipe in a plurality of pulses. Each of the plurality of pulses injects a constant volume of DEF into the inlet exhaust pipe. The system further includes a controller configured to operate the pump and the valve such that a time interval between successive constant volume pulses of the plurality of pulses is varied based on a variable oxides of nitrogen content of the exhaust gases.Type: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Applicant: CUMMINS EMISSION SOLUTIONS INC.Inventors: Douglas Mitchell, A. Carl McDonald, JR.
-
Patent number: 10473013Abstract: Various embodiments relate to a selective catalytic reduction system for treating exhaust gases of an internal combustion engine. The system includes an inlet section that receives exhaust gases from the engine. The system includes a tank storing diesel exhaust fluid (“DEF”), a pump, a valve, and an injector each in fluid communication with each other. The injector is coupled to the inlet exhaust pipe and configured to inject DEF into the exhaust gases flowing through the inlet exhaust pipe in a plurality of pulses. Each of the plurality of pulses injects a constant volume of DEF into the inlet exhaust pipe. The system further includes a controller configured to operate the pump and the valve such that a time interval between successive constant volume pulses of the plurality of pulses is varied based on a variable oxides of nitrogen content of the exhaust gases.Type: GrantFiled: September 21, 2015Date of Patent: November 12, 2019Assignee: Cummins Emission Solutions, Inc.Inventors: Douglas Mitchell, A. Carl McDonald, Jr.