Browse Publications Technical Papers 2005-01-2173

Sludge Formation in OTTO Cycle Engines 2005-01-2173

A review of the specialized literature was carried out to study the process of sludge formation and to understand the reasons for the increasing occurrences of these deposits in Brazil. The following items of consensus were reached:
  • sludge precursors arise from the partial oxidation of fuels;
  • fuel composition has a direct influence on sludge formation;
  • blow-by is the main contact between fuel derived products and the oil.
Based on this information and on the accumulated experience in investigating occurrences of sludge, a test methodology was developed for evaluating the sludge formation characteristics of lubricating oils.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.