Tractrix valve seats... Any info?

[TheTick]

I have been delving into the issue of valve seat wear as it relates to tractrix geometry. I came across a paper several years ago and only recently started studying this.
<

http://mathworld.wolfram.com/Tractrix.html>

<

http://www.inel.gov/featurestories/8-99tractrix.shtml>

Does anyone have a links to a production example of use of tractrix geometry for valve seats? All I can find is examples of the Wordin stopcock valve. I'm fairly sure it has been used in globe valve before.

I could be the world's greatest underachiever, if I could just learn to apply myself.

http://www.EsoxRepublic.com

-SolidWorks API VB programming help

 

[MikeHalloran]

I don't recall seeing it anywhere, except ...

a worn but functional engine valve's seating surface bears a superficial resemblance.



Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA