AMSOIL Signature Series Synthetic Motor Oil 0W-30 (SN, A1/B1,GF-5) [OEM-OIL]

[GReY]

Задай вопрос разработчикам средне- и малозольных допусков, почему они ограничивают именно серу и фосфор

Ле-ту-честь

почему твердые отложения в катализаторе - это фосфаты

пруфлинк плиз

[veles]

http://jultika.oulu.fi/files/isbn9789514286087.pdf

[GReY]

Ну и?
Phosphorus was detected in the poisoned samples as phosphates of Ce, Zr, Al and Ti.
phosphorus poisoning takes place at high operating temperatures and with high oxygen and water content in the gas phase.
phosphorus poisoning mainly affects the oxide components used in this study
catalysts containing a noble metal ... maintained some of their activity in the ageing procedures
calcium can decrease the catalytic activity of components used in automotive catalysts. The role of calcium in catalyst deactivation should be studied further.