Title:
電気化学的ガスセンサによる燃焼混合物の定義されたリッチ/リーン制御のための方法
Document Type and Number:
Japanese Patent JP4625189
Kind Code:
B2
Abstract:
A method for selective rich/lean control of a combustion mixture using an electrochemical gas sensor. The method makes possible the operation of an NOx adsorption catalyst, which stores excess NOx present in the exhaust gas in a storage phase, the exhaustion of the storage capacity of the catalyst being expressed as an increase in the NOx concentration in the exhaust-gas stream after the catalytic converter, and which converts the stored NOx in a subsequent regeneration phase using a rich exhaust-gas mixture, the end of this reaction being able to be seen in a reduction in the lambda value of the exhaust-gas stream after the catalytic converter. The electrochemical gas sensor underlying the method for operating the NOx adsorption catalyst is operated such that the NOx and the oxygen concentrations in the exhaust-gas stream can be alternately determined using one and the same gas sensor.
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Inventors:
Laurent Stahl
Application Number:
JP2000620230A
Publication Date:
February 02, 2011
Filing Date:
April 29, 2000
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
G01N27/419; B01D53/94; F01N3/08; F01N11/00; F02D35/00; F02D41/02; F02D41/14; F02D45/00; G01N27/416; F01N13/02
Domestic Patent References:
| JP10142194A | ||||
| JP11107828A | ||||
| JP11094794A | ||||
| JP8271476A | ||||
| JP10071325A |
Foreign References:
| WO2000002648A1 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel