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:
Aug. 16, 1983
Filed:
Jun. 24, 1981
Robert-Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection apparatus for internal combustion engines is proposed in which the onset and end of injection are determined by a hydraulically actuated control slide. The injection pumps of the apparatus, which are preferably combined with an injection nozzle to make a pump/nozzle unit have a central control pressure pump supplied with fuel by a supply pump. The control pressure pump creates a control pressure (p.sub.S) which is a multiple increase in comparison to the supply pressure (p.sub.V) of the supply pump and actuates the control slide. Each control slide is placed under control pressure (p.sub.S) to initiate the onset of injection via a control line which is separated from the filling lines of the injection pump and closes an overflow channel which leads away from the pump work chamber. At the end of injection the control slide again relieves this overflow channel to a supply line during its return stroke.