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:
Aug. 31, 1976
Filed:
Jun. 25, 1974
Applicant:
Inventors:
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
1231 / ; 60276 ; 1231 / ; 1231 / ;
Abstract
At least one auxiliary air inlet is provided. The inlet is controlled by at least one valve communicating with the inlet pipe of the engine downstream of a device determining the proportion of air and fuel supplied to the engine, such as a carburettor. The valve is controlled by the vacuum from the proportioning device via a capsule including a diaphragm biased by a spring. The vacuum is modulated by an electromagnetic valve controlled by a sensor positioned in the exhaust pipe. The sensor delivers to the electromagnetic valve an electric current variable as a function of the composition of the burnt gases.