-
公开(公告)号：US12209521B2
公开(公告)日：2025-01-28
申请号：US18673920
申请日：2024-05-24
Applicant: Cummins Emission Solutions Inc.
Inventor： Masoud Ziabakhsh Deilami , Joe V. Hill , Jens Honeck , Ralf Rohrmueller
IPC: F01N3/20
Abstract: An exhaust aftertreatment system includes a first decomposition chamber that receives exhaust and treatment fluid, a first dosing module that includes a first injector that injects the treatment fluid into the first decomposition chamber, and a second decomposition chamber disposed downstream of the first decomposition chamber and that receives the exhaust and the treatment fluid from the first decomposition chamber. The exhaust aftertreatment system further includes a second dosing module that includes a second injector that injects the treatment fluid into the second decomposition chamber and a pressure sensor that generates a pressure signal based on a pressure of the treatment fluid in the second dosing module. The exhaust aftertreatment system further includes a variable resistor selectively switchable between multiple resistances.
-
公开(公告)号：US20250012210A1
公开(公告)日：2025-01-09
申请号：US18889699
申请日：2024-09-19
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： Samuel Johnson , Nassim Khaled , Patrick C. Hudson
Abstract: A system includes: a reductant injection system for injecting reductant into an exhaust gas based on an injection parameter or a supply parameter; and a controller configured to: access a current engine condition parameter, wherein the current engine condition parameter includes at least one of an engine fuel flow rate, an engine air flow rate, an engine boost pressure, an engine intake pressure, an engine load, an engine rotational speed, an engine cylinder temperature, an engine cylinder pressure, or an engine fuel pressure, determine one or more control parameters based on a control model and as a function of the accessed current engine condition parameter, and modify a value of the injection parameter or the supply parameter based on the one or more control parameters to control a reductant spray momentum, a reductant droplet momentum, or a reductant momentum vector.
-
公开(公告)号：US12173632B2
公开(公告)日：2024-12-24
申请号：US18033021
申请日：2021-10-21
Applicant: Cummins Emission Solutions Inc.
Inventor： Ryan M. Johnson , Matthew K. Volmerding , Jacob D. Canik , Pranjal Naik
Abstract: An exhaust gas aftertreatment system includes a housing assembly, a first catalyst member, and a second catalyst member. The housing assembly includes an upstream housing, a decomposition housing, a distributing housing, and a catalyst member housing. The upstream housing is centered on an upstream housing axis. The decomposition housing is coupled to the upstream housing and configured to receive exhaust gas from the upstream housing. The distributing housing is coupled to the decomposition housing and configured to receive the exhaust gas from the decomposition housing. The catalyst member housing is coupled to the distributing housing and configured to receive the exhaust gas from the distributing housing. The catalyst member housing is centered on a catalyst member housing axis that is parallel to the upstream housing axis. The first catalyst member extends within the catalyst member housing.
-
公开(公告)号：US20240418113A1
公开(公告)日：2024-12-19
申请号：US18816735
申请日：2024-08-27
Applicant: Cummins Emission Solutions Inc.
Inventor： Shirish S. Punde , Rayomand Dabhoiwala , James Nicholas Reynolds
Abstract: An aftertreatment system for treating exhaust gas includes: an exhaust conduit configured to receive the exhaust gas; a preheating oxidation catalyst disposed in the exhaust conduit; a primary oxidation catalyst disposed in the exhaust conduit downstream of the preheating oxidation catalyst; a selective catalytic reduction system disposed in the exhaust conduit downstream of the primary oxidation catalyst; and a controller configured to: determine a temperature of the exhaust gas at an inlet of the selective catalytic reduction system, and in response to the temperature of the exhaust gas at the inlet of the selective catalytic reduction system being below a threshold temperature, cause hydrocarbons to be provided to the preheating oxidation catalyst or to the exhaust conduit at a location upstream of the preheating oxidation catalyst. The preheating oxidation catalyst catalyzes combustion of the hydrocarbons so as to increase the temperature of the exhaust gas to above the threshold temperature.
-
公开(公告)号：US12151668B2
公开(公告)日：2024-11-26
申请号：US17771852
申请日：2020-08-31
Applicant: Cummins Emission Solutions Inc.
Inventor： Matthew K. Volmerding , Lu Qiu , Lars Krister Henrichsen , Ying Yuan , Jinyong Luo , Manik Narula
Abstract: A hybrid vehicle comprises an engine, an energy storage device, and an aftertreatment system comprising a SCR catalyst configured to treat constituents of an exhaust gas. A controller is operatively coupled to the engine, the energy storage device, and the after treatment system, and configured to estimate an exhaust gas temperature and flow rate of the exhaust gas based on a set of engine operating parameters. The controller determines an exhaust gas cooling rate based on the exhaust gas temperature, flow rate, and a SCR catalyst temperature, and an ambient cooling rate based on an ambient temperature, a vehicle speed and the catalyst temperature. The controller determines a SCR catalyst temperature change rate based on the exhaust gas and ambient cooling rates, and adjusts a load distribution between the engine and the energy storage device based on the SCR catalyst temperature change rate.
-
公开(公告)号：US20240328337A1
公开(公告)日：2024-10-03
申请号：US18742225
申请日：2024-06-13
Applicant: Cummins Emission Solutions Inc.
Inventor： Ryan M. Johnson
CPC classification number: F01N3/2066 , F01N3/035 , F01N3/2013 , F01N3/2892 , F01N13/0097 , F01N13/0093 , F01N2240/16 , F01N2610/02 , F01N2610/08
Abstract: An exhaust gas aftertreatment system includes: a first decomposition chamber; a first dosing module coupled to the first decomposition chamber and configured to provide a first treatment fluid into the first decomposition chamber; a first conversion catalyst member; a second decomposition chamber; a second dosing module coupled to the second decomposition chamber and configured to provide a second treatment fluid into the second decomposition chamber; a second conversion catalyst member; and a third conversion catalyst member.
-
公开(公告)号：US20240254910A1
公开(公告)日：2024-08-01
申请号：US18104420
申请日：2023-02-01
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： Paul T. Frisch , Peter Christianson , Joshua Niedfeldt
CPC classification number: F01N13/1827 , F01N3/0211
Abstract: An aftertreatment system includes an inlet body, a cartridge, and an outlet body. The inlet body includes an inlet body wall and an inlet engagement member. The inlet engagement member includes an inlet engagement member wall and an inlet coupling flange. The inlet coupling flange extends in a downstream direction from the inlet engagement member wall. The cartridge includes a cartridge wall and an adaptor that extends away from the cartridge wall. The outlet body includes an outlet body wall and an outlet engagement member. The outlet engagement member includes an outlet engagement member wall and an outlet coupling flange. The outlet coupling flange extends in an upstream direction from the outlet engagement member wall and towards the adaptor such that the adaptor is disposed between the inlet coupling flange and the outlet coupling flange.
-
公开(公告)号：US12013075B2
公开(公告)日：2024-06-18
申请号：US17785291
申请日：2019-12-17
Applicant: Cummins Emission Solutions Inc.
Inventor： Jacob D. Canik , Andrew Komisarek , Corey Verseman
CPC classification number: F16L59/182 , F01N13/148 , F16L21/065
Abstract: An insulated exhaust gas conduit system includes a first exhaust gas conduit, a second exhaust gas conduit, a first insulation sleeve, and a second insulation sleeve. The first exhaust gas conduit has a first exhaust gas conduit end portion. The second exhaust gas conduit has a second exhaust gas conduit end portion that is configured to engage with the first exhaust gas conduit end portion. The first insulation sleeve includes a first insulation sleeve insulation layer and a first insulation sleeve heat shield. The first insulation sleeve insulation layer is disposed around the first exhaust gas conduit. The first insulation sleeve heat shield is disposed around the first insulation sleeve insulation layer. The first insulation sleeve extends beyond the first exhaust gas conduit end portion. The second insulation sleeve includes a second insulation sleeve insulation layer and a second insulation sleeve heat shield.
-
9.发明公开
公开(公告)号：US20240141815A1
公开(公告)日：2024-05-02
申请号：US18406857
申请日：2024-01-08
Applicant: CUMMINS EMISSION SOLUTIONS INC.
Inventor： Samuel Johnson , Nassim Khaled , Patrick C. Hudson
CPC classification number: F01N3/208 , F01N9/00 , B01D53/9418
Abstract: A system for controlling reductant spray momentum for a target spray distribution includes an exhaust system having an exhaust conduit with exhaust flowing therethrough, a reductant injection system for injecting reductant into the exhaust flowing through the exhaust system based on one or more injection parameters, a reductant supply system for supplying reductant to the reductant injection system based on one or more supply parameters, and a controller. The controller is configured to access current vehicle, engine, exhaust, or reductant condition parameters, determine one or more control parameters based on a control model and the accessed current vehicle, engine, exhaust, or reductant condition parameters, and modify a value of the one or more injection parameters or the one or more supply parameters to control the reductant spray.
-
公开(公告)号：US20240110499A1
公开(公告)日：2024-04-04
申请号：US18530012
申请日：2023-12-05
Applicant: Cummins Emission Solutions Inc.
Inventor： Anand Srinivasan , John K. Heichelbech
IPC: F01N3/28 , B01D53/94 , B01J19/00 , B01J23/745 , B01J29/072 , F01N3/021 , F01N3/10 , F01N3/20 , F01N9/00 , F01N13/00 , G05D7/06
CPC classification number: F01N3/2892 , B01D53/9418 , B01D53/9436 , B01D53/944 , B01D53/9477 , B01D53/9495 , B01J19/0033 , B01J23/745 , B01J29/072 , F01N3/021 , F01N3/106 , F01N3/2006 , F01N3/2066 , F01N3/2803 , F01N9/00 , F01N13/011 , G05D7/0635 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/904 , B01D2255/915 , F01N2370/04 , F01N2610/1453
Abstract: An aftertreatment system includes: a first exhaust gas path comprising a heater; a second exhaust gas path comprising a first decomposition chamber configured to receive reductant and a first selective catalytic reduction catalyst downstream of the first decomposition chamber; a combined exhaust gas path downstream of the first exhaust gas path and the second exhaust gas path, the combined exhaust gas path configured to receive exhaust gas from both the first exhaust gas path and the second exhaust gas path; a selector valve configured to divert the exhaust gas between the first exhaust gas path and the second exhaust gas path based on a temperature of the exhaust gas; and a controller programmed to control the selector valve.
