Search Results

In this study, the oxidation stability, soot dispersancy, antiwear performance, and friction-reducing capability of friction modifiers (FMs) were evaluated, and an SAE 5W-30 fully synthetic oil with MoDTC type FMs was developed for heavy-duty diesel engines. In several engine tests, it was confirmed that the developed oil can double the oil drain interval in comparison with API CD SAE 30, even when EGR is applied, and improves the fuel efficiency.

An oxidation catalyst for diesel engines has been tested in the North American market with proven satisfactory initial performance and durability tests of vehicles but has yet to be evaluated by its bench durability tests due to shorter test duration. Therefore, the oxidation catalyst, durability tested by vehicle and bench, was subjected and the test data were analyzed to clarify its degradation mechanism and set up outlooks for evaluation of its durability by bench tests.