What is crankshaft in vehicle? All Questions › Category: Automotive Electronics › What is crankshaft in vehicle? 0 Vote Up Vote Down chetan shidling asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago The crankshaft is a part of vehicle which is responsible for converting linear motion into rotatory motion. All pistons are connected to crankshaft.