Motor suspension assembly

An assembly comprising:

• an upper frame bracket configured to be coupled with a vehicle frame of a vehicle, the vehicle frame having mounting locations for upper and lower suspension bars that are positionable for a direct current (DC) traction motor to rest upon the upper suspension bar, the upper frame bracket configured to be coupled with the vehicle frame in place of the upper suspension bar;
• a lower frame bracket configured to be coupled with the vehicle frame in place of the lower suspension bar;
• a suspension bracket configured to be coupled with a nose bracket of an alternating current (AC) traction motor;
• one or more upper elastic pads separated by metal plates and configured to be compressed between the upper frame bracket and the suspension bracket;
• and
• one or more lower elastic pads separated by metal plates and configured to be compressed between the lower frame bracket and the suspension bracket,
• wherein the one or more upper elastic pads and the one or more lower elastic pads are pre-compressed to fill open spaces between the upper frame bracket, the lower frame bracket, and the suspension bracket to provide suspension stiffness without a dead zone to reduce and absorb vibration during operation of vehicle and the AC traction motor.

A method comprising:

• coupling a dog bone suspension link with upper and lower frame brackets by pre-compressed elastic bushes, wherein the pre-compressed elastic bushes between the dog bone suspension link and the frame brackets are configured to provide suspension stiffness to reduce and absorb vibration during operation of a vehicle and an alternating current (AC) traction motor;
• coupling one of the upper and lower frame brackets with a vehicle frame in a location where an upper suspension bar or a lower suspension bar previously was coupled with the vehicle frame, the upper and lower suspension bars previously holding one or more elastic pads therebetween and positioned for a direct current (DC) traction motor to rest on the upper suspension bar;
• and
• coupling another one of the upper and lower frame brackets with a nose bracket of the AC traction motor.