Infrared Absorptivities of Several Diesel Engine Soots; Application to the Analysis of Soot in Used Engine Oils Chevron Research and Technology Company

Format:

Conference/Event

Author/Creator:

Ryason, P. R., author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1994-10-17 : Baltimore, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1994

Summary:

Soot was recovered from end-of-test (EOT) oils from several different Diesel engines. After resuspending the recovered soots in fresh high dispersancy engine oil, the infrared absorptivities of the soots were determined over a range of frequencies. On the basis of a statistical analysis of the data, recommended 1870 cm-1 absorptivities for soots from various engine tests are: GM 6.2 L, Mack T-8, Cummins L-10 HST, 59.0±0.5; GM 6.2 L, Mack T-8, Caterpillar 3176, 0.02% sulfur fuel, 58.2±0.4; Caterpillar 3176, 0.02% sulfur fuel and 0.2% sulfur fuel, 56.7±0.3; Caterpillar 3116, 53.3±0.4 and OM 602A, 47.8±0.2. In all cases, the units for the absorptivity are cm2/centigram. Over the range of 3800 cm-1 to 1870 cm-1, the dependence of absorptivity on frequency was linear for all the soots. Use of these absorptivities to determine soot concentrations in used engine oils is discussed. Of particular concern are the procedures required to obtain reproducible results. Special care must be taken to assure compositional uniformity of samples

Notes:

Vendor supplied data

Publisher Number:

942030

Access Restriction:

Restricted for use by site license