free radical wrote:
case in example..CSRV Coates rotary valve heads which can be retrofitted adapted for any internal combustion engine making it way more efficient and less polluting since the engine oil stays in a crankcase,doesn't circulate through the heads,extending oil change intervals many times longer etc etc..
Now this invention has been available for a decade or more now and not a single US auto manufacturer cared to buy and use it!
Now Chinese bought and own all the rights,,
http://www.coatesengine.com/csrv-system.html
coatesengine.com
Because adding a bunch of rotating mass makes an engine more efficient. And I've never, ever heard of variable valve timing mechanisms causing excessive wear. Sounds like this device was invented by people only familiar with carburetors.