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:
Sep. 06, 1977
Filed:
Sep. 11, 1975
Applicant:
Inventors:
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123120 ; 1231 / ; 1231 / ;
Abstract
An internal combustion engine of a known design includes a device for correcting the air-fuel dose. The device has a gas inlet connected to the induction manifold, and a control valve controlling the gas inlet. The control valve is controlled by the negative pressure at the throat of a venturi by means of a control means including a spring biassed diaphragm and subjected to the negative pressure. The said pressure may be modified by an electromagnetic valve controlled by means of a probe positioned in the exhaust manifold, which delivers electrical current varying in accordance with the burned gases. This current controls, via an electronic device, and electromagnetic valve.