mea ʻike maka
ʻO ka ʻenekona kūlana crankshaft kekahi o nā mea ʻike nui loa i ka ʻōnaehana uila uila. Hāʻawi ia i ka manawa hoʻāla (ignition advance angle) a me ka hōʻailona e hōʻoia i ke kūlana crankshaft, a hoʻohana ʻia e ʻike i ke kikowaena make kiʻekiʻe o ka piston, ka angle rotation crankshaft a me ka wikiwiki engine. ʻO ke ʻano i hoʻohana ʻia e ka crankshaft position sensor ʻokoʻa me nā hiʻohiʻona like ʻole, a hiki ke māhele ʻia i ʻekolu mau ʻāpana: ʻano pulse magnetic, ʻano photoelectric a me ke ʻano Hall. Hoʻokomo pinepine ʻia ma ka ʻaoʻao mua o ka crankshaft, ka ʻaoʻao mua o ka camshaft, ma ka flywheel a i ʻole ka mea hāʻawi.