Oil consumption control

A long-term lubricant effect on diesel engine oil consumption observed that oil consumption control is lost when carbon deposits build up on the top piston land [100]. VI improvers may be a factor in that they contribute to piston deposits, but their role in this specific phenomenon has not been demonstrated. 

Hercamp, R.D. (1983) Premature loss of oil consumption control in a heavy duty diesel engine. SAE Paper 831720. 

Emission control systems for two-stroke engines depend heavily on an efficient oxidation catalyst. These may be based on Pt and/or Pd. Higher lube oil consumption characteristics of two-stroke engines may result in modification to the lube oil or require the development of oxidation catalysts more resistant to lube oil ash compounds. 

The increase in demand for good quality white products and the reduced consumption of fuel-oil related to pollution controls are going to be important factors in residue processing and heavy oil conversion in the years to come. 

Conventional throttling or damper control ol flow i.s waste of energy. The use of such couplings can vary speed through oil control, relieve strain on the system and save on the energy consumption. 

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