Patent · US Active

Device to convey a chemical reactant into the exhaust gas stream of a combustion engine

US11473473B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

HJS EMISSION TECHNOLOGY GMBH & CO. KG · DE

Inventors

Aomar Khibit · Dortmund, DE
Thomas Kastner · Kersey, US
Klaus Schrewe · Brilon, DE

Key dates

Filing date	Jan 14, 2020
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Jan 14, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A device for supplying a chemical reactant into the exhaust system of an internal combustion engine, comprising: a mixer housing; a metering pipe passing through the mixer housing, towards which the exhaust flow flowing into the mixer housing flows in a transverse direction, and having a first end and a second end; a metering unit arranged at the first end of the metering pipe and connected to a reactant supply for discharging reactant into the metering pipe; and means for generating a swirl flow of the exhaust flow within the metering pipe. The metering pipe has at least one inflow opening extending over a casing surface segment of no less than 45° in the circumferential direction and extending over at least one section of the length of the metering pipe, said inflow opening having a shovel-like hood arranged on the metering pipe and directing the exhaust flow eccentrically into the inflow opening.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.