I always enjoyed visiting Ron's lab at Stanford and chatting him up. Between talking with him and Fritz Rinehart at the other engine lab down the hall in bldg 500 I always felt I learned something new about combustion.
Personally, I preferred his 572 hemi mid sixties Chrysler. Now that was a scary car!
It was a DOS program, written in C. Fritz asked me to write it for Windows 2.1, but I said: "no thanks, all I need is a frame buffer and a GPIB IO Card". I made my own simple little graphics subsystem with fonts borrowed from X11.
Here's a little picture gallery I have of the ICE lab from 1990: http://www.marinopoulos.net/gallery2/v/Cars/StanfordEngineLa...
Speaking of engine research, kind of crazy what production engines do these days:
Speaking of EtaGen (your third link), two of the founders, Shannon Miller and Matt Svrcek, are from Chris Edwards's group at Stanford. I worked with Matt quite a bit during undergrad. I knew Shannon but didn't work with her much directly. They are doing some very cool stuff. Their generator been in development a long time -- I hope it can go to production soon.