A Technique to Measure Thermal Diffusivity and Thickness of Combustion Chamber Deposits In-Situ Shell Research Limited, P.O.Box 1, Chester CH1 3SH, U.K

Format:

Conference/Event

Author/Creator:

Hopwood, A. B., author.

Conference Name:

International Fall Fuels & Lubricants Meeting & Exposition (1998-10-19 : San Francisco, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

A "thermal pulse" technique has been used to measure thermal diffusivity and thickness of combustion chamber deposits continuously during engine operation. The technique uses a fast-response thermocouple junction at the combustion chamber wall surface and a simplified model which describes the effect of the deposit on the measured temperature cycle. Results from 13 tests using four different fuels and three different commercial additive packages are discussed in the paper. Thermal diffusivity values in the range of 0.85 - 4.2 x 10-7 m2s-1 were measured. Deposit growth is normally a continuous process. However, occasionally deposit flaking events characterised by a sudden significant decrease in deposit thickness were observed

Notes:

Vendor supplied data

Publisher Number:

982590

Access Restriction:

Restricted for use by site license