Abstract: A work vehicle includes an engine and a hood enclosure at least partially surrounding the engine. The hood enclosure may include a front grille and a secondary grille spaced apart from the front grille. The hood enclosure may also at least partially define an airflow compartment. The work vehicle may also include a heat exchanger disposed in the airflow compartment between the front grille and the engine and at least one cooling fan disposed in the airflow compartment between the heat exchanger and the engine. The at least one cooling fan may generally be configured to generate a reversible airflow within the airflow compartment between the front grille and the secondary grille.

Abstract: An integral water trap and venturi tube element for use in an exhaust stack on a vehicle, the exhaust stack being generally vertically oriented and having a catalyst element or other moisture-sensitive emission control component disposed below the water trap, the venturi tube having an aspirator tube disposed therein to provide a low pressure aspiration source for the vehicle, wherein the venturi tube is so disposed in the exhaust stack to also function as the water trap and allows capture and diversion of water entering the exhaust stack from above.

Abstract: An air filter arrangement for a work vehicle is disclosed. The air filter arrangement may include a fan shroud extending between a shroud inlet and a shroud outlet and at least one heat exchanger disposed adjacent to the shroud inlet. The air filter arrangement may also include a fan disposed within the fan shroud between the shroud inlet and shroud outlet. The fan may be configured to draw air through the heat exchanger and between the shroud inlet and shroud outlet. Additionally, the air filter arrangement may include an air filter disposed within the fan shroud between the fan and the heat exchanger such that the air flowing through at least one heat exchanger and between the shroud inlet and shroud outlet is directed around the air filter.

Abstract: An air filter arrangement for a work vehicle is disclosed. The air filter arrangement may include a fan shroud extending between a shroud inlet and a shroud outlet and at least one heat exchanger disposed adjacent to the shroud inlet. The air filter arrangement may also include a fan disposed within the fan shroud between the shroud inlet and shroud outlet. The fan may be configured to draw air through the heat exchanger and between the shroud inlet and shroud outlet. Additionally, the air filter arrangement may include an air filter disposed within the fan shroud between the fan and the heat exchanger such that the air flowing through at least one heat exchanger and between the shroud inlet and shroud outlet is directed around the air filter.

Abstract: An HVAC system for a work vehicle having an operator compartment for a vehicle operator, the system including a heating system, a compartment pressurizer blower, a compartment recirculation blower, a temperature sensor, and an operating mode switch, each operably coupled to an electronic circuit, wherein the circuit is configured to reduce pressurizer blower output when the operator selects high output from the heating system under certain predetermined temperature and conditions and operating modes to improve HVAC system performance.

Abstract: An integral water trap and venturi tube element for use in an exhaust stack on a vehicle, the exhaust stack being generally vertically oriented and having a catalyst element or other moisture-sensitive emission control component disposed below the water trap, the venturi tube having an aspirator tube disposed therein to provide a low pressure aspiration source for the vehicle, wherein the venturi tube is so disposed in the exhaust stack to also function as the water trap and allows capture and diversion of water entering the exhaust stack from above.

Abstract: An HVAC system for a work vehicle having an operator compartment for a vehicle operator, the system including a heating system, a compartment pressurizer blower, a compartment recirculation blower, a temperature sensor, and an operating mode switch, each operably coupled to an electronic circuit, wherein the circuit is configured to reduce pressurizer blower output when the operator selects high output from the heating system under certain predetermined temperature and conditions and operating modes to improve HVAC system performance.