Engine crankshaft

The invention discloses an engine crankshaft. The engine crankshaft comprises a spindle neck, a connecting rod shaft neck and a crank arm; a first weight reduction hole axially extending is formed inthe center of the spindle neck, the connecting rod shaft neck is provided with a second weight reduction hole, the two sides of the crank arm are connected with one end of the spindle neck and one endof the connecting rod shaft neck to form crank throws, the connecting position of one end of the spindle neck and the crank arm is of a bevel angle structure, and the connecting position of one end of the connecting rod shaft neck and the crank arm is of a bevel angle structure. According to the engine crankshaft, thinnest round corner positions of the connecting positions of the spindle neck andconnecting rod shaft neck with the crank arm are improved to be of the bevel angle structures capable of increasing the wall thicknesses, the crankshaft strength can be improved to the great degree,on the premise that the cost