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:
Sep. 25, 2001
Filed:
Mar. 27, 1997
Bernhard Arnold, Roden-Ansbach, DE;
Egon Eisenbacher, Karlstadr/Main, DE;
Franz Pawellek, Hafenlohr, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A control for a pressure fluid supply system is described, in particular for the high pressure in a fuel injection system, for example for an internal combustion Diesel engine, by means of which the pressure in a common high-pressure line supplied by a high-pressure pump, i.e. in the common rail, to which individual consumers are connected, is controlled in accordance with the instantaneous pressure fluid requirements. For adapting the pressure in the common high-pressure line to the pressure fluid requirements of the consumers, i.e. the injection nozzles, a device for limiting the amounts of fluids conveyed is associated with the high-pressure pump, which has at least on adjusting element which can be changed by means of an adjusting signal representing the instantaneous pressure fluid supply situation in the common rail. To avoid an elaborate pressure sensor device in the common rail and for the simultaneous improvement of the reaction behavior of the control, in particular when reducing the high pressure in the common rail, the adjusting signal is derived from the amount of fluid throughput in the delivery line of a pressure control valve connected to the common rail. The pre-conveying pressure or the pre-conveying amount available to the high-pressure pump is affected by means of this adjusting signal in the sense of a regulation of the pressure in the common rail.