3 ms·

Is THS actually capable of varying transmission ratio? I thought it can modulate resistance but not actually change gear ratio.

• jgilias 2y ago
  Transmission ratio yes, as in, what part of engine power gets transmitted to the wheels. Individual gear ratios of course not.
  • numpad0 2y ago
    So the relationship between engine RPM and wheel RPM is always fixed, only torque split is varied, right? I think that's around where some confusions are coming from.
    • jgilias 2y ago
      No, the engine can spin without the wheels spinning. Then MG1 gets spun and charges the battery (or spins freely if the battery is full). This page has a neat PSD simulation to help grok what happens: http://eahart.com/prius/psd/ http://eahart.com/prius/psd/ I think it only works from a computer though!