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. 30, 1981
Filed:
Feb. 25, 1980
Applicant:
Inventors:
Kenneth B Bly, Pontiac, MI (US);
Mark J Gutwald, Rochester, MI (US);
Otto A Ludecke, Rochester, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; F01N / ;
U.S. Cl.
CPC ...
55287 ; 55288 ; 55466 ; 55523 ; 55DI / ; 60311 ; 422178 ;
Abstract
A self-regenerating diesel engine exhaust particulate filter comprising, in a preferred embodiment, porous ceramic walls defining filter surfaces between adjacent inlet and outlet passages and having electric heating wires in the inlet passages to periodically initiate incineration of collected particulates therein. A movable shield is preferably provided to restrict gas flow through the various passages during their respective periods of incineration so as to provide periodic regeneration with a minimum expenditure of external energy.