[frank]

Hello,
I am a senior student in a university in china. I am taking a diploma project about designing a planetary gear train of HYBRID vehicle. THS II system is the one model I chosen. But I do not understand how to calculate the transmission ratio.
Is here someone could tell me?
Thanks a lot!!
Frank

 

[richard schumacher]

The discussion at the following website may be helpful:

http://home.earthlink.net/~graham1/MyToyotaPrius/PriusFrames.htm

 

[richard schumacher]

More specifically, go to that url and then follow "Understanding the Prius" -> "The Power Split Device"

 

[frank]

thank you!!