Application of a New Method for On-Line Oil Consumption Measurement BMW AG

Format:

Conference/Event

Author/Creator:

Püffel, P. K., author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1999-10-25 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Fast and exact measurement of engine oil consumption is a very difficult task. Our aim is to achieve this measurement at a common test bed without engine modifications. We resolved this problem with a new technique using Laser Mass Spectrometry to detect appropriate tracers in the raw engine exhaust. The tracers are added to the engine oil. to the engine oil.For detection of these tracers we use a Laser Mass Spectrometer (LAMS). This is a combination of resonant laser ionization (with an all-solid-state laser) and Time-of-Flight Mass Spectrometry. Currently this is the only way to detect oil originated molecules (like our tracers) in the raw exhaust very fast (50 Hz) and sensitive (ppb-region).Thus, engine mapping of oil consumption over load and speed can be performed in 1-2 days with about 90 measurements. Even measurement during dynamic engine operation is possible, but not quantitative (due to the lack of information about dynamic exhaust gas mass flow). For the calculation of the oil consumption in grams per hour, (g/h) an algorithm has been developed which includes additional engine and exhaust parameters.After the introduction into the fundamentals of the new technique, stationary and dynamic oil consumption measurements using a gasoline engine will be presented

Notes:

Vendor supplied data

Publisher Number:

1999-01-3460

Access Restriction:

Restricted for use by site license