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Along with the ever stricter economical, technical and mainly environmental regulations new types of low phosphorous, sulphurous and metal containing multifunctional engine oil additives are required. In the greatest volume dispersant additives, mainly polyisobuthylene-succinimides are used in the formulation of engine oils. By structure modification advantageous complementary effects could be achieved...
The degradation of the electrical properties of acceleration tubes emerging with performance time is known to be assigned mainly to impurities and surface breakdown tracks appearing on the inner surface of the insulators, Consequently, a radical treatment for removing the surface layer may result in a renewal of the tube. An abrasive blast cleaning procedure has been used on a set of worn-out acceleration...
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