Air conditioning controller for a hybrid car
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTadashi Nakagawa, Takayoshi Matsuno
Life of this patent
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Abstract
When the vehicle stops, a target blowout temperature, a temperature after evaporator, and a predetermined temperature which has been preset are compared with each other. Accordingly, when it is judged that cooling capacity is maintained, a "start engine" demand is not outputted. When it is judged that cooling capacity is not obtained, a "start engine" demand is outputted. After a "start engine" demand has been outputted, even when cooling capacity is maintained, an engine is not stopped. As a result, fuel wastage and annoyance causing to passengers by the engine that keeps on starting up when the vehicle stops can be prevented.
Claims22
An air conditioning controller for a hybrid car, which is provided in the hybrid car being equipped with an engine and an electric motor and having starting means for starting the engine in response to a "start engine" demand, and which controls an air conditioner for air-conditioning a vehicle interior portion via a cooling cycle formed by a compressor and an evaporator, comprising:
- temperature after evaporator detecting sensor which detects the temperature of air cooled by said evaporator;
- judging means which judges whether the temperature after said evaporator detected by said temperature after evaporator detecting sensor is equal to or lower than a predetermined temperature;
- and
- stopping means which stops said "start engine" demand when the temperature after said evaporator detected by said temperature after evaporator detecting sensor is judged to be equal to or lower than a predetermined temperature.
An air conditioning controller for a hybrid car, which is provided in the hybrid car being equipped with an engine and an electric motor and having an engine control computer for starting the engine in response to a "start engine" demand, and which has a computer for an air conditioner which controls an air conditioner for air-conditioning a vehicle interior portion via a cooling cycle formed by a compressor and an evaporator, comprising:
- temperature after evaporator detecting sensor which detects the temperature of air cooled by said evaporator;
- said computer for an air conditioner judges whether the temperature after said evaporator detected by said temperature after evaporator detecting sensor is equal to or lower than a predetermined temperature and stops the "start engine" demand when the temperature after said evaporator detected by said temperature after evaporator detecting sensor is judged to be equal to or lower than a predetermined temperature.
An air conditioning controller for a hybrid car, which is provided in the hybrid car being equipped with an engine and an electric motor and having starting means for starting the engine in response to a "start engine" demand, and which controls an air conditioner for air-conditioning a vehicle interior portion via a cooling cycle formed by a compressor and an evaporator, comprising:
- a temperature after evaporator detecting sensor which detects the temperature of air cooled by said evaporator;
- a vehicle interior portion temperature detecting sensor which detects the temperature of the vehicle interior portion;
- first judging mean which judges whether the difference between the temperature of the vehicle interior portion detected by said vehicle interior portion temperature detecting sensor and a set temperature is greater than a predetermined value;
- second judging means which judges whether the temperature after said evaporator detected by said temperature after evaporator detecting sensor is greater than a predetermined temperature in a case in which the result of the judgment by said first judging means is negative;
- and
- stopping means which stops said "start engine" demand in a case in which the result of the judgment by said second judging means is negative.
Dependencies are inferred from the claim text.