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. 09, 1984
Filed:
Sep. 13, 1982
Ulrich Flaig, Markgroningen, DE;
Johannes Locher, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel metering device for a fuel injection pump is proposed in which the amount of fuel to be injected is metered by means of a magnetic valve. An electro-magnetic valve and a back pressure valve are placed in series in the fuel supply channel leading to the pump work chamber of the fuel injection pump, whereby the back pressure valve places the closing element of the magnetic valve in the open position during the supply stroke of the fuel injection pump, so that only a small holding current is required to keep the magnetic valve open. Rapid switching of the magnetic valve is achieved by a mechanical closing by means of a closing spring of the magnetic valve after the exciter current is switched off.