Patent · US Active

Diesel oxidizing catalytic converter

US11052378B2 · kind B2 · utility

4Cited by

28References

20Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Christoph Hengst · Rockenberg, DE
Christoph Reith · Motten, DE
Michael Schiffer · Hanau, DE

Key dates

Filing date	Jul 13, 2017
Grant date	Jul 6, 2021
Priority date	—
Expiry date	Jul 13, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2510/0684
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a diesel oxidizing catalytic converter which comprises a supporting body with a length L which extends between a first end surface a and a second end surface b, and catalytically active material zones A and B of different composition which are arranged on the supporting body, wherein —material zone A comprises palladium or platinum and palladium in a weight ratio Pt:Pd of <1 and, starting from the end surface a, extends to from 20% to 80% of the length L, and —material zone B comprises platinum and palladium in a weight ratio Pt:Pd of <10 and extends to from 80% to 100% of the length L, and wherein material zone B is arranged above material zone A and the weight ratio Pt:Pd in relation to the material zones A and B is from 1.5 to 3.0.

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