Toyota Camry Hybrid AHV40 Manual page 320

3. Electric Inverter Compressor Control
Compressor Speed Control
D The A/C ECU calculates the target compressor speed based on the target evaporator temperature
(calculated from the room temperature sensor, outside temp. sensor, and solar sensor) and the actual
evaporator temperature detected by the evaporator temperature sensor. Then, the A/C ECU transmits the
target speed to the THS ECU. The THS ECU controls the A/C inverter based on the target speed data
in order to control the compressor to a speed that suits the operating condition of the air conditioning
system.
D The A/C ECU calculates the target evaporator temperature, which includes corrections based on the
room temperature sensor, outside temp. sensor, solar sensor, and evaporator temperature sensor.
Accordingly, the A/C ECU controls the compressor speed to an extent that does not inhibit the proper
cooling performance or defogging performance. As a result, comfort and low fuel consumption can be
realized.
Room Temp.
Sensor
Solar Sensor
Evaporator
Temp. Sensor
Outside Temp.
Sensor
BODY ELECTRICAL - AIR CONDITIONING
A/C ECU
Calculates the target
compressor speed in
accordance with
various input
conditions.
CAN Target
(CAN No.1 Bus) Compressor Speed
THS ECU
Electric Inverter
Compressor
Inverter
Control
A/C Inverter
BE-59
02HBE41Y