time2roll wrote:
Just shows how the auto manufacturers are up against a wall to improve economy.
Only wall is the pride of not invented here therefore its nfg.
For example the US invented CSRV rotary valve head has been around very long time and not a single engine manufacturer jump on it,why?
Now Chinese bought and own the rights to it..
http://www.coatesengine.com/csrv-advantages.htmlOr maybe Oil corps.control auto makers
The CSRV System is comprised of only two moving shafts and does not utilize oil pressure fed bearings, or oil spray; in fact, no engine oil is present in the head of the CSRV Engine. This means the engine oil does not see the hottest parts of the engine, which was the exhaust Poppet Valves. These extremely hot components usually are engine oil spray cooled.
This heat would breakdown the atomic structure of the engine oil, thus lowering the oil viscosity, therefore, oil changes are recommended every 3,000 to 5,000 miles.
On the other hand, with the CSRV incorporated in the engine design, oil change intervals are extended to approximately 50,000 miles or more.
