The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 2025
Filed:
Oct. 28, 2024
Proventia Oy, Oulunsalo, FI;
Eero Kotimäki, Oulunsalo, FI;
Aki Kärnä, Oulunsalo, FI;
Proventia Oy, Oulunsalo, FI;
Abstract
A flow guide and a method therein, including dividing by a divider a mixing chamber to input and output sides; supporting a mixing tube in the mixing chamber, receiving exhaust gas by an intake section from the input side; guiding the received exhaust gas by a swirl guide to flow inside the mixing tube towards the second end as a rotating and advancing main flow; mounting a reactant doser by a reactant doser mount such that when in use, it provides reactant to a dosing section; guiding exhaust gas through the divider by the mixing tube; receiving at least most of the rotating and advancing exhaust gas flow by the dosing section; providing a stem guide around the doser when mounted facing the rotating flow, and defining by the stem guide a central opening surrounding the doser when mounted; and guiding, using a passage structure of the stem guide, a side flow out of the rotating flow to a carrier flow around the doser via the central opening.