A fan shroud and a blower device are provided. The fan shroud includes a shroud wall surface and a plurality of ventilation openings. The shroud wall surface extends around a fan along a radial direction orthogonal to a rotation axis. The plurality of ventilation openings are formed through the shroud wall surface in a thickness direction of the shroud wall surface to allow passing of wind generated by a fan motor. A width of a wall surface side opening on a downstream side of the wind in the ventilation opening is smaller than a width of a lateral wall side opening on an upstream side of the wind in the ventilation opening.

A system and method of controlling components of a vehicle are disclosed. The method includes the steps of sensing a current position of a rear closure panel with a closure panel position sensor, sensing a speed of the vehicle with a speed sensor, and sensing a current environmental condition with an environmental precipitation sensor. The method also includes adjusting a degree of openness of at least one window as a result of the closure panel position sensor indicating that the rear closure panel is in an open position, the speed sensor indicating that a speed of the vehicle is greater than zero kilometers per hour (kph), and the current environmental condition that is indicated by the environmental precipitation sensor.

Stator assembly for an electronically switched electric motor, the stator assembly having a stator extending in the direction of a first axis, the stator including a winding support around which at least one winding is wound, the winding support having a radially inner surface defining a central hole extending in the direction of the first axis; a screen at least partly covering the at least one winding of the stator, the screen having at least one tab in contact with the radially inner surface of the winding support.

The cooling pack assembly includes, a shroud, a fan, a first heat exchanger, and a second heat exchanger. The shroud has a plurality of sidewalls including a main sidewall. The shroud further defines an aperture. The fan is disposed within the aperture. The fan is configured to rotate about a rotational axis. The rotational axis is normal to a plane defined by the main sidewall. The first heat exchanger is disposed on at least one of the plurality of sidewalls. The first heat exchanger has a first cross-sectional area substantially parallel to the plane. The second heat exchanger is disposed on at least one the plurality of sidewalls. The second heat exchanger has a second cross-sectional area substantially parallel to the plane. The second cross-sectional area is less than the first cross-sectional area, and the first heat exchanger is disposed between the fan and the second heat exchanger.

A condenser fan includes a lock hub and multiple blades that are fastened to the hub. Each of the blades includes six planes, each of which having variable parameters including pitch angle, sickle, chord length, and blade curve. For each embodiment of the evaporator fan, the blades are identically configured.

A filter monitoring system for a filter in a vehicle air conditioner includes a first temperature sensor to detect an air temperature of intake air drawn into an air conditioner case through the filter, a second temperature sensor to detect an evaporator temperature of the evaporator, and a processor coupled to the first and second temperature sensors and coupled to a memory. The processor is configured to calculate an actual change-rate of the evaporator temperature while a compressor is in operation, calculate an expected change-rate of the evaporator temperature based on the air temperature and operation levels of a blower and the compressor by using predetermined data with a properly functioning filter, calculate a degradation degree of the filter by comparing the actual change-rate to the expected change-rate, and output a signal indicating degradation of the filter upon determining that the degradation degree is out of an acceptable range.

An illustrative example embodiment of a transport refrigeration system includes an evaporator air management system having an evaporator heat exchanger and an air passage downstream of the evaporator heat exchanger. A two-stage fan assembly within the air passage includes a first fan stage having a first fan rotor, a first motor associated with the first fan rotor for selectively causing the first fan rotor to rotate in a first direction about a fan axis, a second fan stage having a second fan rotor in series with the first fan rotor, and a second motor associated with the second fan rotor for selectively causing the second fan to rotate in a second, opposite direction about the fan axis. The first and second fan stages draw air across the evaporator heat exchanger and through the air passage.

A system and method of controlling components of a vehicle are disclosed. The method includes the steps of sensing a current position of a rear closure panel with a closure panel position sensor, sensing a speed of the vehicle with a speed sensor, and sensing a current environmental condition with an environmental precipitation sensor. The method also includes adjusting a degree of openness of at least one window as a result of the closure panel position sensor indicating that the rear closure panel is in an open position, the speed sensor indicating that a speed of the vehicle is greater than zero kilometers per hour (kph), and the current environmental condition that is indicated by the environmental precipitation sensor.

An air conditioning unit for a vehicle includes: an air conditioning case defining an in-case passage in which air flows to a vehicle interior; a cooler arranged in the air conditioning case and configured to cool the air flowing in the in-case passage; a blower that includes a blower motor and an impeller configured to be rotated by the blower motor and generate an air flow in the in-case passage; and a cooling passage portion defining a motor cooling passage in which air flows to cool the blower motor. The blower is arranged downstream of the cooler with respect to the air flow in the air conditioning case. The motor cooling passage includes a passage inlet located downstream of the impeller with respect to the air flow in the in-case passage, and a passage outlet located upstream of the impeller with respect to the air flow in the in-case passage.

An air vent includes a longitudinally extending housing forming a flow channel and an insert extending across channel within the housing. A longitudinally extending hollow shaft is arranged on the insert and is movable in the housing. An actuating element is guided on the shaft in a longitudinally displaceable fashion. Slats are arranged on an outer side of the shaft, connected to the actuating element and arranged on the insert in an adjustable or movable fashion. The slat can be adjusted in different configurations or alignments in the flow channel such that the flow characteristic of the air vent, namely the intensity of the air mass flow and/or the direction of the air flow discharged from the air vent, can be varied.