從 wiki 百科可以看到,退檔時,電腦確實會補油使要排入的齒輪轉速接近 Downshifting is similar to up-shifting but in reverse order, and is slower, at 600 milliseconds, due to the engine's Electronic Control Unit, or ECU, needing to 'blip' the throttle so that the engine crankshaft speed can match the appropriate gear shaft speed. 這動作就是類似我提到純手排車退檔時,需要踩兩次離合器,於空檔時補油的目的相同...