Abstract: An HVAC system for use with an operator cab of a work vehicle is characterized by an air duct arrangement in communication with a first fan outlet and second fan outlet. At least one air flow diverter is positioned within the air duct arrangement for selectively diverting air flowing through the air duct arrangement. During a “fresh air filter regeneration” mode the at least one air flow diverter closes the air duct arrangement, the first fan is activated, and the second fan is deactivated, whereby discharge air from the first fan flows through the second fan in a reverse direction and flows through the fresh air filter.

Abstract: An airflow control system of a work vehicle includes a controller having a memory and a processor. During an initialization phase, the controller is configured to instruct a blower to operate at an initialization capacity to provide an airflow from an external environment into an interior of a cab of the work vehicle. The controller is also configured to receive a first signal indicative of a pressure within the interior of the cab and to determine a restriction factor based at least in part on the first signal. In addition, during an operation phase, the controller is configured to receive a second signal indicative of the pressure within the interior of the cab and to determine an input flow rate of the airflow from the external environment into the interior of the cab based at least in part on the restriction factor and the second signal.

Abstract: An HVAC system for use with an operator cab of a work vehicle is characterized by an air duct arrangement in communication with a first fan outlet and second fan outlet. At least one air flow diverter is positioned within the air duct arrangement for selectively diverting air flowing through the air duct arrangement. During a “fresh air filter regeneration” mode the at least one air flow diverter closes the air duct arrangement, the first fan is activated, and the second fan is deactivated, whereby discharge air from the first fan flows through the second fan in a reverse direction and flows through the fresh air filter.

Abstract: A controller of an airflow control system is configured to determine a target position of a door of an airflow control assembly, a first flow rate of a first airflow from a recirculated air blower, and a second flow rate of a second airflow from a fresh air blower based at least in part on a target total airflow rate into an interior of a and a target fresh airflow rate into the interior of the cab. The fresh air blower receives a mixture of fresh air and recirculated air based on a position of the door. The controller is further configured to instruct the airflow control assembly to move the door to the target position, instruct the recirculated air blower to output the first airflow at the first flow rate, and instruct the fresh air blower to output the second airflow at the second flow rate.

Abstract: A controller of an airflow control system is configured to determine a target position of a door of an airflow control assembly, a first flow rate of a first airflow from a recirculated air blower, and a second flow rate of a second airflow from a fresh air blower based at least in part on a target total airflow rate into an interior of a and a target fresh airflow rate into the interior of the cab. The fresh air blower receives a mixture of fresh air and recirculated air based on a position of the door. The controller is further configured to instruct the airflow control assembly to move the door to the target position, instruct the recirculated air blower to output the first airflow at the first flow rate, and instruct the fresh air blower to output the second airflow at the second flow rate.

Abstract: An airflow control system of a work vehicle includes a cool box input flow passage configured to only receive a cooling system output airflow and to provide only the cooling system output airflow to the cool box. In addition, the airflow control system includes a cool box input valve fluidly coupled to the cool box input flow passage. The cool box input valve is configured to control the cooling system output airflow through the cool box input flow passage. The airflow control system also includes a controller communicatively coupled to the cool box input valve. The controller is configured to instruct the cool box input valve to selectively transition to an open position, a closed position, and a position between the open and closed positions to control a temperature within an interior of the cool box.

Abstract: An airflow control system of a work vehicle includes a front vent assembly and a front blower configured to provide a front airflow to the front vent assembly. In addition, the airflow control system includes a rear vent assembly and a rear blower configured to provide a rear airflow to the rear vent assembly. Furthermore, the airflow control system includes an air distribution system fluidly coupled to the front blower and to the rear blower. The airflow control system also includes a sensor configured to output a signal indicative of a position of the sun relative to the work vehicle. In addition, the airflow control system includes a controller communicatively coupled to the front blower, the rear blower, and the sensor. The controller is configured to control the front blower and the rear blower based at least in part on the signal.

Abstract: An airflow control system of a work vehicle includes a controller having a memory and a processor. During an initialization phase, the controller is configured to instruct a blower to operate at an initialization capacity to provide an airflow from an external environment into an interior of a cab of the work vehicle. The controller is also configured to receive a first signal indicative of a pressure within the interior of the cab and to determine a restriction factor based at least in part on the first signal. In addition, during an operation phase, the controller is configured to receive a second signal indicative of the pressure within the interior of the cab and to determine an input flow rate of the airflow from the external environment into the interior of the cab based at least in part on the restriction factor and the second signal.

Abstract: An airflow control assembly for an HVAC system of a work vehicle includes a body having a first inlet configured to receive a first airflow, a second inlet configured to receive a second airflow, and an outlet configured to output a third airflow. The airflow control assembly also includes an arcuate door disposed within the body. The arcuate door is configured to rotate relative to the body to control the first airflow through the first inlet and the second airflow through the second inlet. In addition, a width of the first inlet increases from a first circumferential end of the first inlet to a transition point between the first circumferential end and a second circumferential end of the first inlet, and the width of the first inlet decreases from the transition point to the second circumferential end of the first inlet.