Patent · US Active

Method and device for predicting the failure time of the pressure limiting valve of a high-pressure fuel pump of a motor vehicle

US11448149B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Michael Wirkowski · Regensburg, DE
Tobias Ritsch · Regensburg, DE
Claus Stephani · Pfatter, DE

Key dates

Filing date	Jun 11, 2020
Grant date	Sep 20, 2022
Priority date	—
Expiry date	Jun 11, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2250/31
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Disclosed is a method and a device for predicting the failure time of the pressure limiting valve of a high-pressure fuel pump of a motor vehicle. The method includes measuring a characteristic parameter of the pressure limiting valve each time the motor vehicle has been switched off, determining and storing a variable determined by using the measured characteristic parameter, determining the time profile of the variable determined from the characteristic parameter, predicting the future profile of the variable determined from the characteristic parameter, and comparing the predicted future profile of the variable determined from the characteristic parameter with a predetermined wear limiting value. The comparison is to predict the time at which the predicted future profile of the variable determined from the characteristic parameter reaches the predetermined wear limiting value.

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