System for storing an additive and injecting it into the exhaust gases of an engine
US8241577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Apr 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85954
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Process for storing an additive and injecting it into the exhaust gases of an engine and comprising two tanks for storing the additive and one pump for supplying the additive from these tanks to an injection line, these two tanks being in parallel and each being connected to the pump by a branch of the supply line, each of these branches being equipped with a non-return valve and these two valves being calibrated so that the valve located in the branch coming from the first tank (1) is normally open but closes when this tank is empty, and so that the valve located in the branch coming from the other tank (2) is normally closed but opens when the valve from tank (1) is closed or when the branch coming from this tank (1) is blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.