Patent ID: 9102212
Filing Date: 2015-08-11
Classification: B60H

Abstract:
1. A fresh air system for supplying fresh air to a vehicle interior comprising a forward compartment and an aft compartment, the fresh air system comprising: a fresh air inlet in gaseous communication with an exterior of the vehicle; an HVAC unit in gaseous communication with the fresh air inlet and configured to condition fresh air received from the fresh air inlet; at least one cab vent located in the forward compartment and in gaseous communication with the HVAC unit, the at least one cab vent configured to supply conditioned air from the HVAC unit to the forward compartment; at least one fresh air vent located in the aft compartment and in gaseous communication with the fresh air inlet, the at least one fresh air vent configured to supply fresh air to the aft compartment; a bypass valve configured to controllably direct fresh air into the at least one fresh air vent, into the HVAC unit, or into a combination thereof; and a fan configured to accelerate a flow rate of fresh air from the fresh air inlet through the bypass valve and into one or more of the at least one fresh air vent or the HVAC unit, wherein the fan has a maximum flow rate greater than about 200 ft3/min; wherein the fan is configured to operate with the bypass valve directing the fresh air at least in part toward the at least one fresh air vent when the vehicle is in a no-idle state and an engine of the vehicle is off in the no-idle state.