Air conditioning intake door control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 2, 2001
Grant Date -
N/A
app pub date -
Jul 7, 1999
filing date -
Jul 7, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle air conditioning control system includes an actuator for controlling the position of an outside air intake door and an ambient exhaust gas sensor. A controller of the control system monitors a time rate of change of the degree of uncleanness periodically measured on the basis of the output of the sensor, and commands the actuator to bring the intake door to the fully closed position for the inside air recirculation mode if a first requirement about a previous exhaust gas concentration change and a second requirement about a current exhaust gas concentration change are both met.
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