Merge pull request #768 in VECTO/vecto-sim from...

Merge pull request #768 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:bugfix/VECTO-1006b-failed-to-find-torque-converter-operating-point-on-ud-cycle to ReleaseCandidates/v3.3.3.1609

* commit '1d579703':
  torque converter: in case an operating point could not be found, use the same lower limit (i.e. engine idling speed * 1.001) to avoid 'jumping' engine speeds (between idling speed in case no operating point is found) and idling speed * 1.001 in case the engine speed of the found operating point is too low