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Title: Behaviour of dispersant amd inhibitive types of lubricating oil additives in a petrol engine at high crankcase temperatures
Author: Gopalan, N. K.
Awarding Body: University of Manchester
Current Institution: University of Manchester
Date of Award: 1949
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A short duration engine test has been developed with a view to assess the behaviour of lubricating oi1s under high crankcase temperature conditions met with in service. A comparison is made with the 100 hours American Lauson Engine test by using the standard American reference oil REO - 8 - 45 in the two test beds and run at identical crankcase temperatures. The test technique involves a constant observation of deterioration of the crankcase oil by acid values determined at intervals during a test, in addition to rating of piston and engine at the completion of such a test. With this test bed, the effectiveness of petroleum sulphonates having calcium, strontium, barium, zinc and aluminium as metal radical are studied at these high crankcase temperatures. Also the behaviour of the following inhibitors are observed. 1. Diphenyl Amine . 2. Tributyl Phosphite. 3. Organic Sulphur Phosphorus compound. 4. Organic Sulphur Phosphorus compound with zinc. The effect of viscosity characteristics of various base stocks on engine cleanliness, load carrying capacity and oil consumption rates are clearly brought out.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available