The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1978
Filed:
Jul. 19, 1974
Applicant:
Inventors:
Jorg Abthoff, Pluderhausen, DE;
Hans-Dieter Schuster, Grossheppach, DE;
Reiner Kreeb, Stuttgart, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60289 ; 60301 ; 60306 ;
Abstract
An internal combustion engine with an exhaust line in which are arranged a reduction catalyst and downstream thereof an oxidation catalyst, whereby during the starting phase of the internal combustion engine, additional air is supplied to the reduction catalyst, and in the operationally warmed-up condition of the internal combustion engine, additional air is supplied to the oxidation catalyst while at the same time a part of the additional air continues to be fed to the reduction catalyst.