Coates International Ltd. (fka COTE)

[Garyedward71]

No that's not correct. According to the claims and presentations made by Coates International only the lower assembly (the crankcase) is actually cooled with oil. In a typical overhead cam engine the oil pressure pumps the oil into the upper assembly (the cam casing) where it coats (no pun intended) the cams tappets and valve assembly and then drains back into the lower assembly. It's the upper assembly in a poppit valve engine where the most hostile conditions exist. This is due to the fact that there are more than 100 additional moving parts and other harsh conditions in the upper assembly of the poppit valve engine, compared to just two in the CSRV engine. It's these harsh conditions, in the upper assembly which accelerate the oils breakdown and limit its lifespan. To eliminate the need for a lubricant oil in the CSRV engines upper assembly the cams are constructed out of a extremely hard and durable nitride treated steel. These cams roll over very slippery low friction carbon ceramic bushings. Coates LTD claims that it is these high tech space aged materials, combined with the fact, that there are only two moving parts in the CSRV engine's upper assembly which allow it to operate without lubricant oil.