Vehicle air conditioner with automatic air-conditioning control
AssigneeDenso Corporation
InventorsShinji Aoki, Akihisa Izuhara, Yuji Honda
Life of this patent
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Abstract
A vehicle air conditioner controls the air-conditioning automatically based on sensors detecting environmental conditions regarding the air-conditioning of a vehicle and based on an operational portion operable by a passenger. One of the sensors is a sunlight sensor for detecting the amount of sunlight incident into the vehicle. A signal detected by the sunlight sensor is modified to have a time constant by a time constant process. The modification is based on the elevation angle of the sunlight and the inside air temperature of the vehicle. The modified signal is used for automatic control of the air-conditioning.
Claims9
A vehicle air conditioner having automatic control, comprising:
- a sunlight sensor for detecting an amount of sunlight incident into a vehicle;
- a control portion for automatically controlling air-conditioning of a passenger compartment of a vehicle using information relating to said sunlight sensor, said control portion including time constant means for processing a signal detected by said sunlight sensor using a time constant, wherein:
- said time constant is determined in accordance with an elevation angle of the sunlight incident into the vehicle and an inside temperature in the vehicle.
Dependencies are inferred from the claim text.