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:
May. 11, 1993
Filed:
Sep. 30, 1992
Lutz Ballhause, Korb, DE;
Erwin Krimmer, Pluederhausen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The control apparatus has a fuel injection pump, into which suction chamber fuel is fed by a feed pump that aspirates from a tank. A reversing valve is included in the connecting lines between the tank and the fuel injection pump, and by means of this valve, to turn off the engine, the line connections can be changed such that the suction chamber communicates with the feed side of the feed pump and the compression side of the feed pump communicates with the tank. The reversing valve is embodied as a two-position multiposition valve and has an electromagnet, disposed, partly spray-coated, in the valve housing, which is of plastic, of the multiposition valve. A valve member can be displaced counter to the force of a restoring spring by the electromagnet; the valve member acts upon one ball at a time, serving as a closing body, of double seat valves disposed on both sides of the valve member. The balls are not connected to the valve member but instead are acted upon by it only upon adjustment of the valve member in one acted upon by the pressure of the fuel prevailing in the valve housing.