Pulley system for crankshaft

A pulley system for a crankshaft, the pulley system comprising:

• a crankshaft rotatably supported by a cylinder block;
• a crank pulley connected to a first end of the crankshaft;
• an accessory belt configured to wrap around the crank pulley;
• a crank timing pulley connected to a second end of the crankshaft;
• a timing belt configured to wrap around the crank timing pulley;
• a timing belt cover mounted on a front wall of the cylinder block, and having an edge portion, wherein an inner circumferential surface of the edge portion is configured to define an opening;
• and
• a stopper structure configured to restrict the accessory belt from moving into an inner space of the timing belt cover,
• wherein:
• the crank pulley includes a rim having an annular shape and a hub connected to the rim via a plurality of spokes,
• the hub is configured to extend from the plurality of spokes through the opening formed by the inner circumferential surface of the edge portion,
• the timing belt and the crank timing pulley are placed in the inner space of the timing belt cover,
• the crank pulley is placed in an outer space of the timing belt cover,
• the inner circumferential surface of the edge portion is configured to surround an outer circumferential surface of the hub, and
• the edge portion includes a protrusion part protruding from the edge portion toward the timing belt.