Patent · US Active

Method for determining a switching point of a solenoid valve

US11933423B2 · kind B2 · utility

0Cited by

1References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Rupp · Erbach, DE
Bastian Reineke · Paderborn, DE
Paul N. Herrmann · Clinton Township, US

Key dates

Filing date	Oct 15, 2021
Grant date	Mar 19, 2024
Priority date	—
Expiry date	Sep 27, 2042

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/06
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for determining a switching point of a solenoid valve. A solenoid coil is energized to raise a solenoid armature to unblock a flow opening. For a signal profile characteristic of a current profile in the solenoid coil, multiple periods each different from one another and each having the same predefined temporal length are determined. Within each period, a minimal and a maximal value of the signal profile and associated points in time are ascertained and a product of a difference between the maximal and minimal value and a difference between the associated points in time are ascertained. On the basis of the points in time of the minimal and maximal value of that period, which corresponds to a maximal value of the product, the switching point is determined.

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