Since the two-stroke engines use lubricating oil in the gasoline mixture, the ash components in the lubricating additive pass through the exhaust to the catalyst. Fourstroke engines also have lubricating oil in the exhaust due to bypass around the piston rings and valve guide seals. ... Catalyst manufacturers are aware of the effects of lubrication oil contamination and have designed catalysts that resist it foranbsp;...
|Title||:||Catalytic Air Pollution Control|
|Author||:||Ronald M. Heck, Robert J. Farrauto, Suresh T. Gulati|
|Publisher||:||John Wiley & Sons - 2012-04-02|