(19)
(11) EP 4 191 031 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
09.08.2023 Bulletin 2023/32

(43) Date of publication:
07.06.2023 Bulletin 2023/23

(21) Application number: 21954417.8

(22) Date of filing: 30.09.2021
(51) International Patent Classification (IPC): 
F01N 3/08(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02T 10/12; F01N 3/28; B01J 23/63; B01J 35/0006; B01J 37/0215; F01N 3/101; B01D 2255/2092; B01D 2255/1023; B01D 2255/9207; B01D 2255/9202; B01D 2255/1021; B01D 2255/1025; B01D 2255/908; B01D 2258/014; B01D 53/9477; B01D 53/945; B01D 53/944; B01D 2255/2063; B01D 2255/407; B01D 2255/904
(86) International application number:
PCT/CN2021/122422
(87) International publication number:
WO 2023/050409 (06.04.2023 Gazette 2023/14)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicants:
  • Ningbo Geely Royal Engine Components Co., Ltd.
    Ningbo City, Zhejiang 315336 (CN)
  • Aurobay Technology Co., Ltd.
    Ningbo, Zhejiang 315899 (CN)
  • Zhejiang Geely Holding Group Co., Ltd.
    Hangzhou, Zhejiang 310051 (CN)

(72) Inventors:
  • XU, Lifeng
    Ningbo Zhejiang 315336 (CN)
  • WANG, Ruiping
    Ningbo Zhejiang 315336 (CN)
  • SHEN, Yuan
    Ningbo Zhejiang 315336 (CN)
  • WEI, Hong
    Ningbo Zhejiang 315336 (CN)
  • ZHANG, Miao
    Ningbo Zhejiang 315336 (CN)
  • MA, Jinqiang
    Ningbo Zhejiang 315336 (CN)
  • SCHOLTEN, Ingo
    Ningbo Zhejiang 315336 (CN)

(74) Representative: Boult Wade Tennant LLP 
Salisbury Square House 8 Salisbury Square
London EC4Y 8AP
London EC4Y 8AP (GB)

   


(54) THREE-WAY CATALYTIC CONVERSION SYSTEM FOR ENGINE EXHAUST PURIFICATION TREATMENT AND APPLICATION THEREOF


(57) The present invention provides a three-way catalytic conversion system for purification treatment of an engine exhaust gas and use thereof, including an oxidation segment containing an oxidation catalyst and a three-way conversion segment containing a three-way catalyst, where the oxidation catalyst is used to catalyze an oxidation reaction of reductive components in the engine exhaust gas with oxygen, the oxidation segment is located downstream of an engine, and the three-way conversion segment is located downstream of the oxidation segment. In the present invention, the oxidation catalyst tolerant to ultra-high temperature is provided upstream of the three-way catalyst, so that the engine exhaust gas is first treated by the oxidation catalyst and then treated by the three-way catalyst, which can reduce attenuation of performance of the three-way catalyst caused by combustion in the treatment process of the three-way catalyst, and avoid adverse effects of high temperature caused by combustion on three-way conversion reaction and structure and performance of the three-way catalyst, thereby ensuring exertion of the function of three-way conversion of the system and improving the purification efficiency of the engine exhaust gas.