Oil Quality in Diesel Engines With On Line Oil Cleaning Using a Heated Lubricating Oil Recycler

Paper #:
  • 1999-01-1139

Published:
  • 1999-03-01
Citation:
Andrews, G., Li, H., Xu, J., Jones, M. et al., "Oil Quality in Diesel Engines With On Line Oil Cleaning Using a Heated Lubricating Oil Recycler," SAE Technical Paper 1999-01-1139, 1999, https://doi.org/10.4271/1999-01-1139.
Pages:
19
Abstract:
SYNOPSIS A method of cleaning the oil on line was investigated using a bypass fine particulate filter followed by an infra red heater to remove water and light diesel fractions in the oil. This was tested on a range of on road vehicles and a Ford 1.8 litre IDI passenger car engine on a test bed. Comparison was made with the oil quality on the same vehicles and engines without the on-line recycler. Test times were from 200 to 1500 hours of oil ageing and some of the tests showed that the oil quality was still good after 4 times the normal oil life. The results showed that the on line oil recycler cleaning system reduced the rate of fall of the TBN and rate of increase of the TAN. There was a very significant reduction in the soot in oil and the fuel dilution. There was also a consistent reduction in all the wear metals apart from copper and a decrease in the rate of reduction of oil additives. There was also measured on the Ford IDI engine a 5% reduced fuel consumption. Many of these effects were attributed to an influence of the cleaner oil on reduced engine deposits.
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