Patent · US Expired

Oil quality measurement device

US6853203B2 · kind B2 · utility

15Cited by

7References

5Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Markus Beylich · Ludwigsburg, DE
Andreas Franz · Ludwigsburg, DE

Key dates

Filing date	Feb 26, 2003
Grant date	Feb 8, 2005
Priority date	—
Expiry date	Feb 26, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/226
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An oil quality measurement device for an oil circuit (1), which includes an oil condition sensor (2) and an analysis circuit (3). The oil condition sensor (2) is constructed as a capacitive or impedance spectroscopic sensor (4) and attached to the filter element (14) in such a way that, when the filter element (14) is replaced, the oil condition sensor (2) is also automatically replaced.

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