Gear heads: info on the Rotary VALVE engine

[Carbon]

Sup?


as i understand it this type of valve design has been around quite a while.

http://www.coatesengine.com/csrv.html

your thoughts on this?

[maglover728]

Sounds like leaps and bounds ahead of what we are using. Wonder why that is? If it is cheaper to build, I would figure automakers to jump all over it..?

[Lohman446]

Ehh, I think there not thinking through everything there. A novel concept perhaps but glancing through the list of perceived benefits I think the only one that has any real function to it is perhaps noise, and frankly modern engined are built so well noise is seldom a factor.

All the claims based on lack of heat catch me as dishonest. Heat (well, the majority of it) was never caused by the valve train, its a product of internal combustion.

Its not that much different that the valveless knight engines of the past (look up Willys Knight for more information) at least in concept. There are some functional differences of course, and they have gotten rid of at least one of the main issues, but its not some revolutionary never been done before thing. They have basically just replaced the sleeves of a knight engine with a "camshaft" system.

[skife]

looks inteseting, i still think they should use spool valves.

[Lohman446]

looks inteseting, i still think they should use spool valves.

We actually discussed this. Why not just use enlarged fuel injectors to function as valves type idea? It had to do with the amount of power it would take to force open an exhaust valve and keep it open during the exhaust stroke of an engine. That, and the size difference would likely lead to short life expectancies.

[skife]

We actually discussed this. Why not just use enlarged fuel injectors to function as valves type idea? It had to do with the amount of power it would take to force open an exhaust valve and keep it open during the exhaust stroke of an engine. That, and the size difference would likely lead to short life expectancies.

yeah, but if your using a spool valve, there is only the force to open and close the valve, i might be thinking to basic here, just just having like 2 spools running through the head, the lands on the valves are place at different places to keep the motor in time, and then you just have some thing to push and pull the spool to open and close the valves.

i think it would requires alot less force to do this....

hard to belive i just came up with this out of my head while sitting here.

i actually thought of it while taking apart a valve body in a transmission.

[Lohman446]

yeah, but if your using a spool valve, there is only the force to open and close the valve, i might be thinking to basic here, just just having like 2 spools running through the head, the lands on the valves are place at different places to keep the motor in time, and then you just have some thing to push and pull the spool to open and close the valves.

i think it would requires alot less force to do this....

hard to belive i just came up with this out of my head while sitting here.

i actually thought of it while taking apart a valve body in a transmission.

The fault I see is the exhaust stroke is going to likely overcome whatever you have holding open the spool valve and cause it to not work on the exhaust stroke.