Method and apparatus providing auxiliary cabin cooling

摘要

A cooling system for a machine having an engine and an operator cabin includes a primary air conditioning unit, an auxiliary air conditioning unit, an electrical powering unit configured to electrically power the auxiliary air conditioning unit, a sensor configured to generate a signal indicative of a temperature within the operator cabin, and a controller in communication with the primary air conditioning unit, the auxiliary air conditioning unit, and the sensor. The controller selectively activates the primary air conditioning unit and the auxiliary air conditioning unit.;When the primary air conditioning unit is activated, a timer is started to determine the elapsed time during which the temperature within the operator's cabin exceeds the acceptable range of desired temperature, and the auxiliary unit is activated when the elapsed time exceeds a threshold time.

主权项

1. A cooling system for a machine having an engine and an operator cabin, the cooling system comprising:
a primary air conditioning unit; an auxiliary air conditioning unit; an electrical power unit configured to electrically power the auxiliary air conditioning unit; a sensor configured to generate a signal indicative of a temperature within the operator cabin; and a controller in communication with the primary air conditioning unit, the auxiliary air conditioning unit, and the sensor, the controller being configured to:
selectively activate the primary air conditioning unit only during operation of the engine when the signal indicates the temperature within the operator cabin is outside of an acceptable range of a desired temperature;selectively activate the auxiliary air conditioning unit during shutdown of the engine when the signal indicates the temperature within the operator cabin is outside of an acceptable range of the desired temperature;initiate tracking of elapsed time when the signal indicates that the temperature within the operator cabin is outside of the acceptable range of the desired temperature; andselectively activate the auxiliary cooling unit to augment a cooling capacity of the primary air conditioning unit when the elapsed time exceeds a threshold time.