A Study on Effects of Low Viscosity Engine Oil and MoDTC on Piston Friction Losses in a DI Diesel Engine

Paper #:
  • 2015-01-2044

Published:
  • 2015-09-01
DOI:
  • 10.4271/2015-01-2044
Citation:
Ito, A., Chubachi, Y., Yamamoto, T., Tanaka, N. et al., "A Study on Effects of Low Viscosity Engine Oil and MoDTC on Piston Friction Losses in a DI Diesel Engine," SAE Technical Paper 2015-01-2044, 2015, doi:10.4271/2015-01-2044.
Pages:
8
Abstract:
The reduction of friction losses is a subject of central importance in a diesel engine. The piston frictions of low viscosity engine oil and molybdenum dialkyl dithiocarbamate (MoDTC) have been measured by floating liner method. It was found that the low viscosity engine oil lower than 5W-30 is not effective against the reduction of friction mean effective pressure (FMEP) related to the fuel consumption. MoDTC showed a good performance against the reduction of FMEP. In the friction measurement points, the reduction ratio of 10W-30 with MoDTC to 10W-30 was greater than that of 5W-30 to 10W-30.
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