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:
Apr. 27, 2021
Filed:
Sep. 04, 2015
Robert Bosch Gmbh, Stuttgart, DE;
Andrea Krusch, Ludwigsburg, DE;
Andreas Gutscher, Markgroeningen, DE;
Siamend Flo, Schwieberdingen, DE;
Thorsten Allgeier, Untergruppenbach, DE;
Walter Maeurer, Korntal-Muenchingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for operating a piston pump () which is driven by means of a coil () of an electromagnet. A piston () of the piston pump () can be moved in a cylinder () for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil () during a switch-on period such that a current flows through the coil () and the piston () is accelerated, said voltage being applied by means of an actuation device (). A time curve of an electric state variable (I, U) of the coil () is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston () against a stop. The invention further relates to an actuation device and a piston pump.