Various possibilities. I think I'd use 'driving forces' in this context. Avoid the use of 'power' and 'torque', I would say. And 'torque' is certainly not the right term here. Cheers again!

1. Kluwer Polytechnisch woordenboek:
aandrijfkracht = drive power, motive power, propelling force
2. http://www.conti-online.com/generator/www/uk/en/continental/...
3. http://www.geocities.com/sl_mille/df.html
4. http://www.freshpatents.com/Vehicle-driving-force-control-de...