| Author | Message | ||
     Buell920 |
man if Buell could take this concept to the next level. http://autospeed.drive.com.au/cms/article.html?&A= 0910 think about the power we could have. the EPA would love Buell. I followed this sence about 98 when they put something simalar in a diesel motor. International has moved forward with it, they looked for 07 to be the year but? What do ya think Court? (Message edited by buell920 on December 28, 2006) | ||
| 2kx1 |
I have also been waiting for this,and think it would be an excellent technology to use on the next generation Buell. The weight loss ,fewer parts ,less friction,variable valve timing,better fuel economy (as if it needs to get even better) and more power. Come on July!!!!!!!!!!!! | ||
| Anonymous |
We started working on this nearly 15 years ago; it's a great conceptual fit for our motor type. Unfortunately there are problems in actually executing it that have prevented it from becoming actually viable yet. The potential benefits are tremendous; a list written back then took up a whole page. However, with no money, it's hard to move ahead! There are technical and political reasons why the major automotive companies don't have this as a high priority, unfortunately, so the piggyback ride we have been hoping for has not materialized. So, it won't be on our bikes in July. If International gets it done, it will be a step along the way, although there are issues on our motors that make it another level harder. | ||
| Rocketman |
Lotus have been working at this for years too. Rocket | ||
| Ft_bstrd |
Lotus powered by a Toyota engine?    | ||
| 2kx1 |
Better than a Lotus powered by an Isuzu. | ||
| Ceejay |
http://www.coatesengine.com/index.html I think rotary valves are cool, have been around a while, similar concept but the above system would be neat if it could withstand the rigors as it has the VVT... | ||
| Sleez |
i worked for a company about 6 years ago in El Segundo who had an HD engine that ran with the EVA (electronic valve actuators), it was sweet, also had an Isuzu truck running around that as far as i know is still running good, of course half the bed is taken up with batteries and electronics, and it sounds like a diesel even though it is gas powered. my thought was you could have telemetry on a race track to change the "lift/duration/timimg" settings on the go as different portions of the track required more or less torque/traction control etc. the other benefit is economy and ease of starting. the valves can release some compression to allow a smaller/lighter starter. | ||
| Mikef5000 |
The ball valves seem possible! That seems more possible than just an electric motor slamming valves up and down thousands of times per minutes. | ||
| Slipknot |
In 1977 I sketched several variations of the same concept but with some other features. A friend of mine contacted someone in California who told us that Norton had tried a similar system but had trouble with friction, which I thought could be solved with ceramics or other heat/friction resistant properties. We got the understanding that there was no interest by anyone in developing the concept. I called it a cylinder valve because I conceived of one long piece for multiple inline cylinders. I also considered a real flat disc rotary valve, or one for both intake and exhaust but the cylinder could be spun with a belt, chain or gear without involving a 90 degree turn (like a driveshaft). Another advantage of these is the possible variable timing of opening and closing, affecting emissions and torque. | ||
| Slaughter |
Coates system is do-able (given careful material selection) - Cool thing is you can NEVER hit a piston with a valve again and if you bust a timing chain/belt or seize the system in any way, the engine just stops. Minimal damage. I kinda like it. (but I'm a materials geek) (Message edited by slaughter on February 25, 2007) |
