Hydrogen-assisted integrated emission control system
US-2021102486-A1 · Apr 8, 2021 · US
Exhaust system for an ammonia-burning combustion engine
US11959408B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11959408-B2 |
| Application number | US-202318169595-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 15, 2023 |
| Priority date | Feb 18, 2022 |
| Publication date | Apr 16, 2024 |
| Grant date | Apr 16, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention relates to a system for ammonia combustion and exhaust gas treatment, the system comprising: an internal combustion engine for combusting ammonia; and an exhaust system comprising an intake for receiving an exhaust gas from the combustion engine, an upstream injector for adding hydrogen gas to the exhaust gas and a downstream catalyst article, wherein the downstream catalyst article comprises a three-way catalyst (TWC) composition. The invention further relates to a method for the treatment of an exhaust gas from an ammonia internal combustion engine.
First claim
Opening claim text (preview).
The invention claimed is: 1. A system for ammonia combustion and exhaust gas treatment, the system comprising: an internal combustion engine for combusting ammonia; and an exhaust system comprising an intake for receiving an exhaust gas from the combustion engine, an upstream injector for adding hydrogen gas to the exhaust gas and a downstream catalyst article, wherein the downstream catalyst article comprises a three-way catalyst (TWC) composition. 2. The system according to claim 1 , wherein the internal combustion engine further comprises a controller for maintaining stoichiometric engine conditions. 3. The system according to claim 1 , wherein the system further comprises an ammonia storage vessel and/or a hydrogen storage vessel. 4. The system according to claim 1 , wherein the TWC composition is provided on a flow-through substrate or a wall-flow filter substrate. 5. The system according to claim 4 , wherein the TWC composition is provided on from 25 to 75% of an axial length of the substrate, extending from an upstream end of the substrate. 6. The system according to claim 1 , wherein the TWC composition comprises: (i) a platinum group metal component comprising one or more of Pt, Pd and Rh; (ii) a support material; and (iii) an oxygen storage component (OSC). 7. The system according to claim 1 , wherein the TWC composition comprises ruthenium. 8. The system according to claim 1 , the system further comprising a NOx sensor arranged upstream or downstream of the downstream catalyst article, wherein the system is configured to adjust the addition of hydrogen based on measurements obtained from the NOx sensor. 9. The system according to claim 1 , wherein the system further comprises a PGM-containing slip catalyst arranged downstream of the downstream catalyst article for converting slipped hydrogen to water and/or for converting slipped ammonia to nitrogen and water. 10. The system according to claim 1 , wherein the downstream catalyst article further comprises a PGM-containing slip catalyst composition arranged extending from an outlet end of the downstream catalyst article for converting slipped hydrogen to water and/or for converting slipped ammonia to nitrogen and water.
Assignees
Inventors
Classifications
Improving ICE efficiencies · CPC title
Exhaust gas composition · CPC title
Storage means for substances, e.g. tanks or reservoirs · CPC title
characterised by the distribution of the catalytic coatings · CPC title
for measuring or detecting NOx · CPC title
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Frequently asked questions
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- What does patent US11959408B2 cover?
- The present invention relates to a system for ammonia combustion and exhaust gas treatment, the system comprising: an internal combustion engine for combusting ammonia; and an exhaust system comprising an intake for receiving an exhaust gas from the combustion engine, an upstream injector for adding hydrogen gas to the exhaust gas and a downstream catalyst article, wherein the downstream cataly…
- Who is the assignee on this patent?
- Johnson Matthey Plc
- What technology area does this patent fall under?
- Primary CPC classification F01N3/206. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).