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. 17, 1979
Filed:
Sep. 29, 1976
Gerhard Brune, Bamberg, DE;
Manfred Lembke, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electro-magnetic valve having a very fast response and a favorable temperature-gradient characteristic. The valve includes an iron core which carries a stationary magnetic winding within a valve housing, and a plunger coaxially oriented relative to the iron core and separated from the core by an air gap. The magnetic winding is made of a metal having a specific resistance greater than 20 milli-ohms per square millimeter of cross-sectional area per meter length at 20 degrees centigrade. The valve may also include a temperature compensating resistor connected in series with the magnetic winding. When used in an electronic fuel-injection system for an engine having an even number of cylinders, in which one of these valves is used for each cylinder, these valves can be electrically paired, with one valve of each pair connected in series with the other valve of that pair, and connected to a power source without requiring the use of a compensating resistor in series with the magnetic winding of each valve, due to the identical short response time of each valve.