Patent · US Active

Method and device for diagnosis of a high-pressure sensor of a motor vehicle

US11230987B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Tet Kong Brian Chia · Regensburg, DE
Thomas Kraft · Obertraubling, DE
Walter Sassler · Regensburg, DE

Key dates

Filing date	Apr 29, 2019
Grant date	Jan 25, 2022
Priority date	—
Expiry date	Apr 29, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Various embodiments include a method for diagnosis of a high-pressure sensor of a motor vehicle comprising: measuring a pressure with the high-pressure sensor; feeding the measured pressure to a control unit; evaluating the measured pressure with the control unit and determining a control signal for an amount of fuel to be injected; checking whether a first difference between two successive values of the pressure measurement signal is greater than a calculated maximum difference value; checking whether a second difference between a minimum pressure measurement signal measured within a time segment and a maximum pressure measurement signal measured within the time segment is less than an expected change in the pressure measurement signal; and checking whether a measured pressure gradient is smaller than an expected pressure gradient.

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