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:
Feb. 23, 1993
Filed:
May. 29, 1992
Berni Reisser, Notzingen, DE;
Hannes Pflug, Weilderstadt, DE;
Mohammad-Ali Khosrawi, Ludwigsburg, DE;
Michael Scharf, Brunswick, DE;
Helmut Simon, Goeppingen, DE;
Christian Taudt, Winnenden-Schelmenholz, DE;
Wolfgang Goll, Ilsfeld, DE;
Paul Wuetherich, Schwieberdingen, DE;
Thomas Fortenbacher, Gerlingen, DE;
Karl Konrath, Freiberg/Neckar, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention is based on a fuel injection pump in which to supply a very rapid pressure rise in the interior of a fuel injection pump, a pressure valve controlling this pressure is modified such that upon cold starting of the engine, the pressure valve closes a bypass line at the feed pump and thus delivers all the fuel to the fuel injection pump. The closure is effected as a function of rpm and accordingly pressure, and also as a function of the engine operating temperature; in the fuel injection pump according to the invention, the rpm- and pressure-dependent diversion is performed by the adjusting piston of an injection adjuster. Thus, compared with the known cold-starting accelerating devices, one additional pressure limiting valve can be eliminated.