In this video, I simplify an Emit compound to get a specific effect: in this case, a flow of particles along a curve where there is a specific time interval between each particle.
Here’s a previous post about emitting particles at regular intervals.
eX-SI
ICE, scripting, and other tech stuff about Softimage aka XSI
eX-SI 
Thank you so much for your time to do this tutorial. Don’t mean to throw monkey wrench in it but I wonder (because it’s specific to my project) if you can emit few particles (evenly spaced) per frame. Seems like, when I reduce current time below 0.25 they appear in irregular intervals again.
Once again thanks so much for your time
thank you very much for the tutorial, I have several months trying to resolve this problem and so far no one knew how to solve it in the forums, thank you very much again