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:
Oct. 13, 1981
Filed:
Sep. 21, 1980
Otto Glockler, Renningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electrically controlled fuel injection apparatus is proposed which serves to control an internal combustion engine. The electrically controlled fuel injection apparatus comprises at least one injection valve which is opened via an electronic control apparatus in accordance with operational characteristics of the engine, at least one temperature-sensitive element which is in communication with the electronic control apparatus for the purpose of influencing the fuel injection quantity and one supplementary air valve disposed within a lateral channel which bypasses the throttle valve in the intake manifold, which supplementary air valve has a movable valve member which is actuatable against a return force by means of a member operating in accordance with temperature for the purpose of opening more or less widely the cross-sectional area of the lateral channel, whereby an electric heating device which is capable of being switched on when ignition impulses are present is attached to at least a portion of the temperature-dependent member, and the temperature-sensitive element is disposed within the supplementary air valve, in particular upon a bimetallic spring of the supplementary air valve which acts as the member which operates in dependence on temperature, for the purpose of influencing the fuel injection quantity. By means of this disposition of the temperature-sensitive element, a temperature-controlled and/or time-controlled enrichment of the fuel-air mixture takes place during the warm-up phase of the internal combustion engine.