Device and method for automatically detecting at least one fluorescent and/or light absorbing indicator contained in a liquid service fluid during the process of filling the service fluid into a machine

US7466400B2 · kind B2 · utility

Assignee

• Fuchs Petrolub AG · DE

Inventors

• Rolf Luther · Speyer, DE
• Christian Seyfert · Mannheim, DE
• Fritz Stumm · Heidelberg, DE

Key dates

• Filing date: May 25, 2004
• Grant date: Dec 16, 2008
• Expiry date: Apr 13, 2025

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/6439
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a device for the automatic detection of at least one fluorescent and/or light-absorbent indicator contained in a liquid service fluid during the filling of a machine, in particular a combustion engine of a vehicle, with said service fluid are provided. Detection takes place in the following manner: irradiation during the filling of the service fluid to be analyzed using at least one light source (3) in a measuring section (2); capture of the light (14) passing through the service fluid in the measuring section (2) and/or emanating from the indicator contained in said fluid as a result of a fluorescent effect, by means of a light collector (5), the intensity of the light being influenced by the indicator or indicators or the concentration thereof; generation of at least one measurement signal (8, 9) representing the intensity of the light that strikes.