Method and device for determining the soot concentration in the engine oil of internal combustion engines

US8833145B2 · kind B2 · utility

Assignee

• MAN Truck &Bus AG · DE

Inventors

• Felix Fischer · Berkeley, US
• Harald Beck · Linden, DE

Key dates

• Filing date: Oct 17, 2011
• Grant date: Sep 16, 2014
• Expiry date: Jul 30, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N15/06
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining a soot concentration in an engine oil of internal combustion engines, in which method a defined quantity of the engine oil is conducted with a defined flow speed along and/or through a measurement path. In a region of the measurement path, the engine oil is acted on with energy from at least one energy source in such a way that the soot particles contained in the engine oil at least partially absorb the energy. An energy quantity absorbed in the measurement path region is subsequently detected, and from this a soot concentration in the engine oil is determined. A device for determining the soot concentration in the engine oil of internal combustion engines is provided for performing the method.