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:
Feb. 10, 1976
Filed:
Mar. 04, 1974
Applicant:
Inventors:
Assignee:
Alpha Romeo S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
261 / ; 2611 / ;
Abstract
A fuel feeding system for internal combustion engines, of the type comprising a carburettor with a throttle controlling the main flow of fuel-air mixture to the cylinders, the carburettor further comprising a pre-mixing chamber for the air-fuel mixture, which communicates with the engine intake duct by means of ports located both upstream and downstream of the throttle in its closed condition, said pre-mixing chamber feeding also with air-fuel mixture a secondary chamber, communicating both with the atmospheric air and with the intake duct downstream of the said throttle, whereby the fuel-air ratio is kept constant both at idling and at low RPM of the engine.