US2008134670A1PendingUtilityA1

Internal combustion engine with an exhaust emission control system

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Assignee: AVL LIST GMBHPriority: Dec 7, 2006Filed: Dec 5, 2007Published: Jun 12, 2008
Est. expiryDec 7, 2026(~0.4 yrs left)· nominal 20-yr term from priority
Inventors:Paul Kapus
F01N 2450/00F01N 3/24F01N 13/1805F01N 3/2093F01N 2560/025
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Claims

Abstract

The invention relates to an internal combustion engine with an exhaust emission control system which comprises at least one catalyst, with the exhaust gas flow being reversible by the catalyst. A first installation position is provided for a first lambda sensor upstream of the catalyst and a second installation position for a second lambda sensor downstream of the catalyst, with the first and second installation positions being arranged symmetrically relative to the transversal plane.

Claims

exact text as granted — not AI-modified
1 . An internal combustion engine with an exhaust emission control system which comprises at least one catalyst, with an exhaust gas flow being reversible by the catalyst, wherein a first installation position is provided for a first lambda sensor upstream of the catalyst and a second installation position for a second lambda sensor downstream of the catalyst, with the first and second installation positions being arranged symmetrically relative to a transversal plane. 
   
   
       2 . An internal combustion engine according to  claim 1 , wherein the installation positions have identical screw threads for the lambda sensors. 
   
   
       3 . An internal combustion engine according to  claim 1 , wherein the catalyst is arranged symmetrically with respect to a transversal plane which is arranged normally to the direction of flow.

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