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:
Jan. 24, 1978
Filed:
Sep. 27, 1976
Richard L Balsley, Washington, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
The intake manifold of an internal combustion engine has incorporated therein a bottom mixture plenum in heat transfer relationship for heating thereof by exhaust gases discharged from the engine. The plenum receives the induction mixture for the engine through at least one inlet bore in the form of a tube perforated through its side wall to distribute air and crankcase ventilation fumes from an air chamber located directly under the carburetor pad of the intake manifold and to distribute recirculated exhaust gases from a second chamber positioned between the plenum and the air chamber, the second chamber being supplied with exhaust gases for recirculation, the air chamber providing, in effect, an air gap insulator to reduce the transfer of heat from the exhaust gases to a carburetor mounted on the conventional carburetor pad of the intake manifold.