| 摘要 |
A blower system and method of operation are disclosed for a vehicle air conditioning system, including a blower case for receiving air to be circulated into a vehicle cabin, with first and second dampers, each for selectively varying between a recirculation position for recirculating vehicle cabin air into the blower case and a fresh position for introduction of fresh air from outside the vehicle into the blower case. An outlet temperature is calculated for a vehicle air conditioning system. A control system is provided for controlling the damper positions based on the calculated outlet temperature. If the calculated outlet temperature is below a first temperature, the control system opens both dampers to a recirculation position so as to recirculate vehicle cabin air into the blower case. If the calculated outlet temperature is between the first temperature and a higher second temperature, the control system opens either the first or second damper to a fresh position for introduction of fresh air from outside the vehicle into the blower case, and selectively opens the other damper to a recirculation position or the fresh position based upon relative humidity and vehicle speed. If the calculated outlet temperature is higher than the second temperature, the first and second dampers are both opened to the fresh position.
|
