US2003131588A1PendingUtilityA1

Desulphurisation of a storage catalytst by heating

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Priority: Feb 9, 2000Filed: Jan 24, 2001Published: Jul 17, 2003
Est. expiryFeb 9, 2020(expired)· nominal 20-yr term from priority
Inventors:Eberhard SchnaibelOliver WiemersMatthias DallAndreas Kufferath
F01N 3/08F02D 41/025F01N 3/0842F01N 2570/04F01N 13/009F01N 2240/00B01D 53/9495F02D 41/1443F01N 13/011B01D 53/9431F02D 41/028F02D 41/008Y02T10/12
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Claims

Abstract

A method of heating a main catalytic converter positioned downstream from at least one primary catalytic converter by supplying unburned fuel generated by the engine in the exhaust gas upstream from the main catalytic converter while at the same time surplus air is present upstream from the main catalytic converter, where the generation of unburned fuel by the engine takes place at a separate time and/or place from the generation of surplus air in the exhaust gas by the engine.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method of heating a main catalytic converter which is positioned downstream from at least one primary catalytic converter by supplying unburned fuel generated by the engine in the exhaust gas upstream from the main catalytic converter while at the same time surplus air is present upstream from the main catalytic converter, 
 wherein the generation of unburned fuel by the engine takes place at a separate time and/or place from the generation of surplus air in the exhaust gas by the engine.

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