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:
Jul. 16, 1991
Filed:
Jul. 19, 1990
Applicant:
Inventors:
Werner Erhard, Cadolzburg, DE;
Werner Flugel, Oberasbach, DE;
Assignee:
Prufrex-Electro-Apparatebau Inh. Helga Muller, geb. Dutschke, Cadolzburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02M / ; F02B / ;
U.S. Cl.
CPC ...
123331 ; 123361 ; 123438 ; 123403 ;
Abstract
A control system for the carburetor of an internal combustion engine wherein the carburetor has a choke valve disposed at the inlet of the carburetor induction tube and the choke valve is operated automatically by an actuator. The actuator for the control includes a pulse-width modulator in which the pulse width or the degree of modulation is influenced by a family of characteristics stored in a programmable memory, the memory applying signals to the pulse-width modulator for pre-specified air-fuel mixtures in accordance with engine speed.