抄録
An experimental research is performed to clarify the combustion characteristics of the present bunker fuels by the methods mentioned above subtitle.
The sample fuels are several kinds of base oils taken out from the conventional and some recent refiner process, these mixture oils on trial and several bunker fuels in practical use.
The main result are showed as follows:
(1) The thermal analysis makes possible to predict the original components of bunker fuels by comparing the burning profile with it of the base oil.
(2) Two correlation formulas on droplet burning were obtained by the method of multiple regression analysis. The ignition lag and the burning rate on droplet burning are able to be predicted by these formulas.
(3) The sample fuels are able to be classified by the characteristic component on the diagram between the ignition lag and the burning rate.
(4) On the same diagram, bunker fuels which were reported troubles happened in use, are distributed the characteristic range.
The recent low grade bunker fuels have caused to increase troubles on combustion in the marine diesel engines. Troubles on combustion are able to be predicted by adapting the analysis result above mentioned to these low grade bunker fuels.
