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US 2022/0065149 A1Published application
Exhaust gas purification system with air injection
AssigneeBASF SE
InventorsChun Yu CHEN, Shau Lin CHEN
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Abstract
The present invention relates to an exhaust gas purification system comprising two catalytic sub-systems, wherein the first catalytic sub-system is for conversion of NOx, HC, CO and optionally particulate matter, and the second sub-system is for conversion of CO. The second sub-system locates at the downstream of the first catalytic sub-system. An air injection is positioned between the first catalytic sub-system and second catalytic sub-system.
Claims14
An exhaust gas purification system comprising:
- a first catalytic sub-system for conversion of nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), and optionally particulate matter (PM);
- a second catalytic sub-system for conversion of CO;
- and
- an air injection;
- wherein the second catalytic sub-system is located downstream of the first catalytic sub-system, and the air injection is positioned between the first catalytic sub-system and second catalytic sub-system.
2 more elements
Dependencies are inferred from the claim text.