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. 24, 2009
Filed:
Mar. 29, 2005
Erwin Achleitner, Obertraubling, DE;
Martin Cwielong, Regensburg, DE;
Gerhard Eser, Hemau, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a fuel supplying device comprising a low-pressure circuit, a high-pressure pump which is coupled to the low-pressure circuit on the input side thereof and transports fuel into a fuel accumulator, and an actuator which controls the fuel flow rate of the high-pressure pump. In the event of a stationary load, a first value of a fuel pressure and a first actuating signal of the actuator are determined, a second value of the fuel pressure is set, and said second value being larger or smaller than the first value of the fuel pressure by a pre-determined amount, a second actuating signal of the actuator is determined once the second value of the fuel pressure has been set, and an error in the fuel supplying device is detected according to the first and second actuating signals of the actuator.