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:
Mar. 25, 1980
Filed:
Jun. 06, 1978
Applicant:
Inventors:
Claudio Lombardi, Alessandria, IT;
Lorenzo Belletti, Turin, IT;
Assignee:
Fiat Societa per Azioni, Turin, IT;
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 1231 / ; 1231 / ; 261144 ; 261145 ; 261142 ;
Abstract
Lean air/fuel mixture is supplied to the induction manifold of an Otto cycle engine through a heat exchanger heated by engine exhaust gases under normal running conditions, and under idling conditions mixture is supplied to an auxiliary induction manifold solely through an auxiliary duct. The auxiliary duct is wound with an electrical resistive heating element to preheat the mixture upon cold-starting of the engine for a time, typically 30-40 seconds, determined by a timer switch.