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:
Jun. 24, 1997
Filed:
Sep. 28, 1995
Applicant:
Inventor:
Klaus Schneider, Tiefenbronn, DE;
Assignee:
Dr. Ing. h.c.F. Porsche AG, Weissach, DE;
Primary Examiner:
Int. Cl.
CPC ...
F02K / ;
U.S. Cl.
CPC ...
60278 ; 123568 ;
Abstract
A multi-cylinder internal combustion engine with a vacuum and an exhaust gas system is provided with a feed device for secondary air into the exhaust gas system and with an external exhaust gas return. The lines required for this are integrated into the housing to a substantial extent and are used for feeding secondary air during the warm-up phase as well as for subsequent exhaust gas return.