Locomotive air conditioner control system and related methods

摘要

A locomotive cab air conditioning method involves providing a multi-speed motor operable in at least a first speed state and a second speed state, the motor connected for driving a refrigerant compressor from a companion alternator output of the locomotive. An operating speed of a locomotive engine is monitored, and operation of the motor in one of the speed states is established based at least in part upon the monitored locomotive engine speed.