Heat dissipation structures for crankshaft dampers

A crankshaft damper adapted to be attached to one end of a crankshaft of an engine comprising:

• a hub attached to one end of the crankshaft, wherein the hub is disk-shaped;
• an elastomeric member attached to the hub;
• and
• an inertia ring connected to the hub through the elastomeric member, wherein the hub is received in a radially extending slot defined by the elastomeric member and the inertia ring is attached to one radially extending side of the elastomeric member, wherein the crankshaft damper further comprises a cup-shaped case that secures the elastomeric member and the inertia ring together, wherein a plurality of radially extending bores defined by the inertia ring are aligned with a plurality of holes defined by the cup-shaped case, wherein air flow is facilitated radially outwardly from the hub through the inertia ring and the case. (FIGS. 25-32)

A crankshaft damper adapted to be attached to one end of a crankshaft of an engine comprising:

• a hub attached to one end of the crankshaft, wherein the hub is disk-shaped;
• an elastomeric member attached to the hub;
• an inertia ring connected to the hub through the elastomeric member, wherein the hub is received in a radially extending slot defined by the elastomeric member and the inertia ring is attached to one radially extending side of the elastomeric member;
• and
• a cup-shaped case that secures the elastomeric member and the inertia ring together, wherein a plurality of radially extending bores defined by the elastomeric member extend radially outwardly from the hub and are aligned with a first plurality of holes defined by the inertia ring and a second plurality of holes defined by the cup-shaped case, wherein air flows radially outwardly from the hub through the elastomeric member, the inertia ring and the cup-shaped case. (FIGS. 25-32)

A crankshaft damper comprising:

• a hub adapted to be attached to a crankshaft;
• an elastomeric ring defining a circumferential slot on an inner diameter for receiving an outer periphery of the hub;
• first and second radially inwardly converging plates assembled to a front side and a rear side of the elastomeric ring, respectively;
• and
• an inertia ring attached to the first and second plates radially outboard of the elastomeric ring with a plurality of rivets that are received in a first set of axially extending holes defined by the plates and the inertia ring, wherein a second set of axially extending holes are provided through the plates and the inertial ring hole to facilitate air flow between a forward area in front of the damper and a rearward area behind the damper. (FIGS. 33-34)

A crankshaft damper comprising:

• a hub adapted to be attached to a crankshaft;
• an elastomeric ring defining a circumferential slot on an inner diameter for receiving an outer periphery of the hub;
• first and second radially inwardly converging plates assembled to a front side and a rear side of the elastomeric ring, respectively, wherein an outer diameter of the first and second plates include notches radially outboard of the elastomeric ring;
• and
• an inertia ring attached to the first and second plates radially outboard of the elastomeric ring, the inertia ring defining axially extending holes aligned with the notches in the first and second plates to facilitate air flow between a forward area in front of the damper and a rearward area behind the damper. (FIGS. 35-36)

A crankshaft damper comprising:

• a hub adapted to be attached to a crankshaft;
• an elastomeric ring defining a circumferential slot on an inner diameter for receiving an outer periphery of the hub;
• first and second radially inwardly converging plates assembled to a front side and a rear side of the elastomeric ring, respectively, the first and second plates having an outer diameter outboard of the elastomeric ring;
• and
• an inertia ring attached to the first and second plates radially outboard of the elastomeric ring, the inertial ring defining recesses on a front inner diameter and a rear inner diameter, the inertia ring defining slots extending axially through the inertia ring to facilitate air flow between a forward area in front of the damper and a rearward area behind the damper. (FIGS. 37-38)

A crankshaft damper comprising:

• a hub adapted to be attached to a crankshaft;
• an elastomeric ring defining a circumferential slot on an inner diameter for receiving an outer periphery of the hub;
• and
• front and rear cast inertia ring parts each including an outer ring defining a first set of axially extending holes that are adapted to receive fasteners for securing the front and rear cast inertia ring parts together, the outer ring defining a second set of axially extending holes to facilitate air flow between a forward area in front of the damper and a rearward area behind the damper, wherein the front and rear cast inertia ring parts include a front wall and a rear wall that extend radially inwardly from the outer ring in front of and behind the elastomeric ring, respectively. (FIGS. 39 &40)