Patent · US Active

Operating method and actuation device for a piston pump

US10989186B2 · kind B2 · utility

0Cited by

13References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andrea Krusch · Ludwigsburg, DE
Andreas Gutscher · Markgröningen, DE
Siamend Flo · Stuttgart, DE
Thorsten Allgeier · Untergruppenbach, DE
Walter Maeurer · Ditzingen, DE

Key dates

Filing date	Sep 4, 2015
Grant date	Apr 27, 2021
Priority date	—
Expiry date	Mar 31, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B2203/0404
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for operating a piston pump (10) which is driven by means of a coil (1) of an electromagnet. A piston (2) of the piston pump (10) can be moved in a cylinder (3) for pumping purposes by means of the electromagnet. A voltage (U) is applied to the coil (1) during a switch-on period such that a current flows through the coil (1) and the piston (2) is accelerated, said voltage being applied by means of an actuation device (11). A time curve of an electric state variable (I, U) of the coil (1) is qualitatively detected, and the curve or a curve derived therefrom is analyzed in order to detect an impact of the piston (2) against a stop. The invention further relates to an actuation device and a piston pump.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.