Fluid for purifying heat engines using stable suspensions of metal colloidal particles, and methods for preparing said fluid
US10850233B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Oct 20, 2016 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | May 13, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention describes a fluid which is suitable for the decontamination of heat engines which can carry out both the catalytic reduction of oxides of nitrogen (NOx) contained in exhaust gases and assist in the regeneration of the particulate filter (PF), said fluid being in the form of a stable suspension of colloidal particles, these colloidal particles being dispersed in an aqueous solution containing at least one reducing agent or at least one precursor of a reducing agent for NOx. The invention also describes several embodiments for the preparation of said fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.