JP2013166413A - Vehicle air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner of a hybrid vehicle configured to reduce the amount of waste heat during heating and to reduce power consumption of an electric heating means, while reducing fuel consumption.SOLUTION: Operating states of an engine 1 and an electric power generator 2 are controlled so that a temperature of an engine cooling water gets close to "a predetermined target water temperature". Heating performance of a hot-water heating means 3 can be improved in a wire operation range, thereby reducing power consumption of an electric heating means 4 in a wide operation range. The temperature of the cooling water gets close to the target water temperature, thereby reducing waste heat during heating and minimizing energy waste. The power consumption of the electric heating means 4 can be reduced in a wide operation range, thereby preventing an engine from operating for recovering the power consumed by the electric heating means 4, resulting in reduction in fuel consumption.

Description

  The present invention relates to a vehicle air conditioner equipped with “hot water heating means” for heating using cooling water (heat medium for heat dissipation) and “electric heating means” for heating using electric power.

[Conventional technology]
As an example of an air conditioner mounted on a hybrid vehicle, a technique disclosed in Patent Document 1 is known.
This patent document 1 discloses a technique for suppressing the engine operation rate in a hybrid vehicle capable of traveling by “operation of an internal combustion engine (hereinafter referred to as an engine)” or “motor operation of a motor generator”.
Specifically, Patent Document 1 increases the upper limit of the charging range to increase the amount of charge during engine operation. As a result, the frequency of engine restart for power generation during low-load traveling is reduced, and fuel consumption is suppressed.

[Problems of the prior art]
In the prior art, by increasing the amount of charge during operation of the engine, the operation rate of the engine during low load traveling is suppressed, so the temperature of the cooling water decreases during low load traveling.
Then, the heating capacity by the hot water heating means will be reduced, and the reduced amount (shortage) of the heating capacity of the hot water heating means will be compensated by the electric heating means. As a result, the heating capacity required for the electric heating means is increased. That is, power consumption increases.

In the prior art, the amount of power consumed by the electric heating means that consumes a large amount of power is recovered by operating the engine, resulting in increased fuel consumption.
Further, during high load traveling, the engine operating rate is high, so the amount of engine exhaust heat is large. As a result, the heating capacity by the cooling water is excessive, and the exhaust heat generated by the engine is discarded.

JP 2002-262401 A

  The present invention has been made in view of the above problems, and its object is to reduce the amount of exhaust heat discarded during heating operation, thereby suppressing the power consumption of the electric heating means and the fuel consumption. The provision of an air conditioner for vehicles.

[Means of Claim 1]
The vehicle air conditioner controls the operating state of the engine and the motor generator so that the temperature of the cooling water of the engine is directed to the “predetermined target water temperature” or the “predetermined target water temperature range” during the heating operation.
Thereby, since the heating capability of the hot water heating means during the heating operation is enhanced in a wide operation range, the power consumption of the electric heating means can be suppressed in a wide operation range.
And since the electric power consumption of an electric heating means is suppressed, the engine operation for recovering the electric power consumed by the electric heating means can be suppressed, and as a result, the fuel consumption can be suppressed.
Furthermore, since the amount of exhaust heat discarded during the heating operation can be reduced, energy waste during the heating operation can be minimized.

[Means of claim 2]
The electric heating means compensates for the shortage of heating capacity by the hot water heating means.
Thereby, the heating ratio of the electric heating means can be suppressed, and the power consumption by the electric heating means can be suppressed.

[Means of claim 3]
The control means controls the operating states of the engine and the motor generator based on the “cooling water temperature”.
That is, the temperature of the cooling water is directly detected, and the operating state of the engine and the motor generator is controlled so that the detected temperature of the cooling water is directed to the “predetermined target water temperature” or “predetermined target water temperature range”. .

[Means of claim 4]
The control means controls the operating states of the engine and the motor generator based on the “vehicle running load”.
That is, the operating states of the engine and the motor generator are controlled so that the temperature of the cooling water is directed to the “predetermined target water temperature” or the “predetermined target water temperature range” based on the “vehicle running load”.

[Means of claim 5]
The control means controls the operating states of the engine and the motor generator based on the “average vehicle speed of the vehicle”.
That is, “average vehicle speed” is used as the form of “vehicle running load”.

[Means of claim 6]
The control means controls the operating states of the engine and the motor generator based on the “average operating rate of the engine”.
That is, “average engine operating rate” is used as a form of “vehicle running load”.

[Means of Claim 7]
The control means controls the operating states of the engine and the motor generator based on “average required power” required for vehicle travel.
That is, “average required power” is used as the form of “vehicle running load”.

[Means of Claim 8]
The control means controls the operating state of the engine and the motor generator based on “future route information (distance, inclination, speed, traffic jam, etc.)” obtained from a car navigation system (hereinafter referred to as “car navigation”) mounted on the vehicle. .
As a result, it is possible to estimate “the future driving load of the vehicle”. As a result, it is possible to control the operating states of the engine and the motor generator based on the estimated “traveling load of the vehicle in the future”, and it is possible to reduce the amount of exhaust heat discarded through the cooling water.

[Means of Claim 9]
The “target water temperature” or “target water temperature range” is changed according to the “heating required heat amount” required for heating the passenger compartment.
Thereby, even if a heating capability changes, the amount of exhaust heat discarded through cooling water can be suppressed.

[Means of Claim 10]
The vehicle air conditioner according to claim 10 replaces the hybrid vehicle with a fuel cell vehicle, and the hot water heating means heats the vehicle interior using cooling water that radiates heat from the power system. .
Thereby, the same effect as that of claim 1 can be obtained.
That is, it is possible to reduce the amount of exhaust heat that is discarded during the heating operation, and to reduce power consumption during heating and fuel consumption (hydrogen consumption: a fuel cell vehicle travels with “hydrogen as fuel”). .

(Example 1) which is explanatory drawing of a vehicle air conditioner. It is a flowchart which shows the example of control (Example 1). It is a time chart for operation | movement description (Example 1). It is a flowchart which shows the example of control (Example 2).

Embodiments 1 and 2 of the invention will be described with reference to the drawings.
The vehicle air conditioner according to the first embodiment is mounted on a hybrid vehicle that can run by switching “operation of the engine 1 (at this time, the motor generator 2 operates the generator)” or “motor operation of the motor generator 2”. .
And this vehicle air conditioner
Hot water heating means 3 for heating using the cooling water of the engine 1;
Electric heating means 4 to compensate for the shortage of heating capacity by the hot water heating means 3,
And control means for controlling the operating state of the engine 1 and the motor generator 2 so that the temperature of the engine cooling water is directed to the “predetermined target water temperature” or the “predetermined target water temperature range” when the heating is requested.

The vehicle air conditioner according to the second embodiment is mounted on a fuel cell vehicle that can travel by switching between “charging operation by hydrogen supply” or “discharging operation” of the fuel cell.
And this vehicle air conditioner
Hot water heating means 3 for heating using cooling water for heat dissipation of the power system;
Electric heating means 4 to compensate for the shortage of heating capacity by the hot water heating means 3,
Control means for controlling the operating state of the engine 1 and the motor generator 2 so that the temperature of the cooling water is directed to a “predetermined target water temperature” or a “predetermined target water temperature range” at the time of a heating request;
Is provided.

Hereinafter, a specific example (example) of the present invention will be described with reference to the drawings. The following examples show specific examples, and it goes without saying that the present invention is not limited to the examples.
In the following examples, the same reference numerals as those in the “DETAILED DESCRIPTION OF THE INVENTION” denote the same functional objects.

[Example 1]
Embodiment 1 will be described with reference to FIGS.
The vehicle air conditioner of this embodiment is mounted on a hybrid vehicle.
Hybrid cars
A water-cooled engine 1 that generates a running output by burning fuel (gasoline etc.);
A motor generator 2 that can generate electric power for running while consuming electric power;
Control means for controlling the operating state of the engine 1 and the motor generator 2 in accordance with the driving state of the vehicle (including the driving state of the occupant);
Is provided.

The motor generator 2 is a motor generator,
-In addition to the function of an electric motor (motor) that generates rotational output when power is supplied from an in-vehicle battery (battery) 5 via an inverter 6,
-It has the function of the generator (generator) which produces electric power when driven by the engine 1 etc.

The control means performs “engine shaft efficiency priority control” that suppresses the engine operating rate as much as possible and prioritizes the shaft efficiency of the engine 1 during normal operation (in an operation state different from the heating operation described later). Is.
Specific basic control of the switching state of the engine 1 and the motor generator 2 is as follows:
・ When starting and running at low speed and low load, the vehicle is driven by “motor operation of motor generator 2 only”.
・ When driving at medium speed and medium load, the vehicle is driven by “only motor operation of the motor generator 2” or “operation of the engine 1 while the motor generator 2 operates as a generator”.
-During high-speed and high-load driving, the vehicle is driven by "both motor operation of the motor generator 2 and operation of the engine 1".
Of course, this control example is an example and is not limited.

The vehicle air conditioner includes an air conditioner unit 11 mounted on the front part of the vehicle interior.
This air conditioner unit 11
An air conditioning duct 12 that guides conditioned air into the passenger compartment;
A blower 13 for generating an air flow toward the passenger compartment in the air conditioning duct 12,
-The inside and outside air switching means 14 which switches the air which this air blower 13 inhales to outside air or inside air is provided.
A plurality of air outlets (a defroster air outlet 15, a face air outlet 16, a foot air outlet 17, etc.) are provided on the air downstream side of the air conditioning duct 12, and each is opened and closed manually or automatically by a door 18. It is provided as possible.

The vehicle air conditioner
A cooling means 21 capable of cooling the air passing through the air conditioning duct 12,
A hot water heating means 3 for heating using the cooling water (hot water) of the engine 1,
Electric heating means 4 for heating using electric power,
Is provided.

The cooling means 21 is a refrigeration cycle,
An electric compressor 22 that consumes power and sucks and compresses refrigerant;
An outdoor heat exchanger (condenser during cooling operation) 23 that heat-condenses and condenses and liquefies the high-temperature and high-pressure refrigerant compressed by the electric compressor 22 with the outside air (vehicle driving wind or the like);
A decompressor 24 that decompresses the refrigerant condensed in the outdoor heat exchanger 23;
A cooling evaporator 25 which is arranged in the air conditioning duct 12 and heat-exchanges with the mist refrigerant decompressed by the decompressor 24 and the air passing through the air conditioning duct 12 to cool the air in the air conditioning duct 12;
An accumulator 26 that supplies only the gas refrigerant to the electric compressor 22;
It is configured with.

The hot water heating means 3 is for heating the passenger compartment using cooling water (hot water) for radiating heat discharged from the engine 1,
A heater core 31 disposed in the air conditioning duct 12 on the downstream side of the air from the cooling evaporator 25;
A cooling water circuit 32 that guides the cooling water that has passed through the engine 1 to the heater core 31;
Is provided.

In the air conditioning duct 12,
A bypass path 33 that bypasses the heater core 31;
An air mix door 34 for controlling the ratio of air passing through the heater core 31 and air passing through the bypass path 33;
Is provided.
The air mix door 34 is provided so as to be automatically controllable based on “temperature setting by an occupant”, “air temperature that has passed through the cooling evaporator 25 (so-called post-evaporation temperature)”, and the like.

  The electric heating means 4 compensates for the shortage of the heating capacity of the hot water heating means 3 described above. That is, in the heating operation (at this time, the operation of the above-described refrigeration cycle is stopped), when the heating required only by the hot water heating means 3 cannot be performed, the electric heating means 4 is the hot water heating means. 3 to compensate for the lack of heating capacity.

  The electric heating device of this embodiment is a heat pump cycle using the above-described refrigeration cycle, and includes a heating condenser 41 that reheats the air that has passed through the heater core 31. The heating condenser 41 exchanges heat with the high-temperature and high-pressure refrigerant compressed by the above-described electric compressor 22 and the air passing through the air conditioning duct 12 (air passing through the heater core 31), and air toward the passenger compartment. Is to heat.

Furthermore, the electric heating means 4 is a means for operating the above-described refrigeration cycle as a heat pump cycle.
A heating decompressor 42 for decompressing the refrigerant guided to the outdoor heat exchanger 23 during heating;
A first switching valve 43 that switches the refrigerant flow to the heating pressure reducer 42 during heating;
A second switching valve 44 that bypasses the indoor heat exchanger for cooling during heating;
Is provided.
Of course, the heat pump cycle shown in this embodiment is a specific example and is not limited.

Here, the vehicle air conditioner is
A control mode for controlling the temperature in the passenger compartment to the target temperature using the cooling means 21 and the hot water heating means 3;
A control mode (during heating operation) for controlling the temperature in the passenger compartment to the target temperature using the hot water heating means 3 and the electric heating means 4;
Are automatically switched according to the driving state.

The control means controls the operating state of the engine 1 and the motor generator 2 so that the temperature of the engine coolant is directed to a predetermined target water temperature (for example, 50 ° C.) during the heating operation.
Specifically, the control means of this embodiment directly detects the temperature of the cooling water from the cooling water temperature detection means (water temperature sensor) during the heating operation,
・ When the detected coolant temperature is higher than the target coolant temperature, execute “motor operation priority control of motor generator 2 (control with reduced engine operation rate)”.
When the detected coolant temperature is lower than the target water temperature, “generator operation priority control of motor generator 2 (control with increased engine operation rate)” is performed.

An example of this control will be described with reference to the flowchart of FIG.
When the control routine is entered (start), it is determined whether or not there is a heating request (step S1).
If the determination result in step S1 is NO (when there is no heating request), the “engine shaft efficiency priority control” described above is performed (step S2), and then this control routine is ended (END).
If the determination result in step S1 is YES (when there is a heating request), it is determined whether or not the temperature of the engine cooling water is equal to or higher than a target water temperature (predetermined value) (step S3).

When the determination result in step S3 is YES (when the cooling water temperature is equal to or higher than the target water temperature), “motor operation priority control (driving priority) of the motor generator 2” is performed (step S4), and then this control routine is performed. End (end).
If the determination result in step S3 is NO (when the cooling water temperature is lower than the target water temperature), “generator operation priority control (power generation priority) of the motor generator 2” is performed (step S5). End the control routine (END).

Next, an operation image will be described with reference to FIG.
In this operation example, the operation of the prior art is indicated by “one-dot chain line”, and the operation of this embodiment is indicated by “solid line”.
FIG. 3A shows an example of changes in the running load of the vehicle.
That is, in this operation example, an operation image when the traveling load of the vehicle changes from “light load X” → “high load Y after light load” → “light load Z after high load” is shown.

FIG.3 (b) shows the example of a change of the temperature of engine cooling water.
FIG.3 (c) shows the change of the heating calorie | heat amount of the hot water type heating means 3 with respect to the heating calorie | heat amount required.
FIG.3 (d) shows the change of the electric power (heating heat amount by the electric heating means 4) required for heating.
FIG.3 (e) shows the change of SOC (the charging rate of the battery 5).
FIG. 3F shows the change in fuel consumption.

"Light load X"
(I) Since the conventional technology suppresses the engine operation rate as much as possible, the “motor generator 2 is on the motor operation side” is preferentially controlled for “light load X”, and the engine operation rate is suppressed, Cooling water temperature decreases.
Then, the engine restart is not performed until the temperature of the engine coolant reaches an allowable lower limit or the SOC falls below a predetermined value. As a result, the heating capacity of the hot water heating means 3 is reduced, and the electric heating means 4 compensates for the shortage. That is, power consumption increases.

(Ii) On the other hand, in this embodiment, the operating states of the engine 1 and the motor generator 2 are controlled such that the temperature of the engine cooling water approaches the target water temperature, and the temperature of the engine cooling water approaches the target water temperature.
As a result, compared with the prior art, the heating capacity of the hot water heating means 3 is increased, and the heating rate of the electric heating means 4 is reduced. That is, power consumption can be reduced as compared with the prior art.
The difference in power consumption between the prior art and this embodiment is indicated by symbol α in the figure.

“Y at high load after light load”
(Iii) In the prior art, when the traveling load increases, the engine 1 is operated to generate a large driving force. In other words, “high load Y” is preferentially controlled on the “motor generator 2 on the generator operating side” to improve shaft efficiency and recover power consumed in “light load operation”. As the engine operating rate is increased in this way, the temperature of the engine coolant increases.
As a result, the temperature of the cooling water becomes larger than the heating capacity required for the hot water heating means 3, and the amount of cooling water that is not used for heating and is thrown away from the radiator to the outside air becomes large. That is, the amount of exhaust heat discarded during heating operation increases.
The amount of exhaust heat discarded during heating is indicated by symbol β in the figure.

(Iv) On the other hand, in this embodiment, similarly to the above (ii), the operating states of the engine 1 and the motor generator 2 are controlled so that the temperature of the engine cooling water reaches the target water temperature, and the engine cooling water is The temperature approaches the target water temperature.
As a result, the amount of cooling water discarded without being used for heating can be suppressed. That is, the amount of exhaust heat discarded during the heating operation can be suppressed.

"Z at light load after high load"
(V) In the prior art, as in (i) above, the “motor generator 2 is on the motor operating side” is preferentially controlled in “light load Z after high load”, the engine operating rate is suppressed, and engine cooling is reduced. The water temperature falls.
As a result, the heating capacity of the hot water heating means 3 is reduced, and the electric heating means 4 compensates for the shortage. That is, power consumption increases.

(Vi) On the other hand, in this embodiment, as in (ii) above, the operating states of the engine 1 and the motor generator 2 are controlled so that the temperature of the engine cooling water approaches the target water temperature, and the engine cooling water is The temperature approaches the target water temperature.
As a result, compared with the prior art, the heating capacity of the hot water heating means 3 is increased, and the heating rate of the electric heating means 4 is reduced. That is, power consumption can be reduced as compared with the prior art.
The difference in power consumption between the prior art and this embodiment is indicated by a symbol γ in the figure.

(Effect of Example 1)
In the vehicle air conditioner according to this embodiment, as described above, the operating states of the engine 1 and the motor generator 2 are controlled so that the temperature of the engine coolant is directed to the “predetermined target water temperature” during the heating operation. The
Thereby, since the heating capability of the hot water heating means 3 is enhanced in a wide operation range, the power consumption of the electric heating means 4 can be suppressed in a wide operation range.

In addition, compared with the prior art, the amount of exhaust heat discarded during heating operation can be reduced (see symbol β), and energy waste can be minimized.
Furthermore, since the power consumption of the electric heating means 4 is suppressed in a wide operation region (see symbols α and γ), the engine operation for recovering the power consumed by the electric heating means 4 can be suppressed. As a result, as shown in FIG. 3 (f), fuel consumption can be suppressed as compared with the prior art.

[Example 2]
Embodiment 2 will be described with reference to FIG. In addition, in this Example 2, the same code | symbol as the said Example 1 shows the same function thing.
In the first embodiment, the example in which the “cooling water temperature” is directly detected and the operating states of the engine 1 and the motor generator 2 are controlled during the heating operation is shown.
On the other hand, in the second embodiment, the operating states of the engine 1 and the motor generator 2 are controlled from the “vehicle travel load” during the heating operation.
That is, in the second embodiment, the operating states of the engine 1 and the motor generator 2 are controlled so that the temperature of the cooling water is directed to the “predetermined target water temperature” based on the “vehicle running load”.

“Vehicle travel load” is
-It may be determined from the "average vehicle speed (km / h)" from the past to the present a predetermined time ago (for example, 5 minutes ago)
-It may be obtained from the "average operating rate (%) of engine 1" from the past to the present a predetermined time ago,
-You may obtain | require from the "average request | requirement power (kW) required for vehicle driving | running | working" from the past before the predetermined time to the present.

Alternatively, the “vehicle travel load” may be obtained based on “future route information” obtained from a car navigation system mounted on the vehicle.
That is, the “vehicle travel load” is estimated based on “travel distance, road surface inclination angle, expected vehicle speed, expected traffic congestion status” obtained from “future route information”, and the estimated “vehicle travel load” ”May be taken into consideration to control the operating states of the engine 1 and the motor generator 2.

A control example based on “the running load of the vehicle” will be described with reference to the flowchart of FIG. 4.
When the control routine is entered (start), it is determined whether or not there is a heating request (step S1).
If the determination result in step S1 is NO (when there is no heating request), the “engine shaft efficiency priority control” described above is performed (step S2), and then this control routine is ended (END).

If the determination result in step S1 is YES (when there is a heating request), the average traveling load of the vehicle is calculated (step S10).
Subsequently, it is determined whether or not the average travel load calculated in step S10 is equal to or greater than a predetermined load (predetermined value) (step S11).

When the determination result in step S11 is YES (when the average traveling load is equal to or greater than the predetermined load), “motor operation priority control of the motor generator 2” is performed (step S4), and then this control routine is terminated ( End).
If the determination result in step S11 is NO (when the average travel load is less than the predetermined load), “generator operation priority control of motor generator 2” is performed (step S5), and then this control routine is terminated. (End).

Thus, even if the operation state of the motor generator 2 is controlled based on the “vehicle running load”, the same effect as in the first embodiment can be obtained.
In addition, by estimating "the future driving load of the vehicle" in conjunction with the car navigation system, "the problem that the cooling water arrives at the destination with high water temperature after high load driving and the heat of the cooling water is wasted" Can be avoided.

[Modification]
In the first embodiment, the control is performed so that the cooling water temperature becomes “a predetermined target water temperature (for example, 50 ° C.)”, but the cooling water temperature is “a predetermined target water temperature range (for example, 50 ° C. to 50 ° C.). 60 ° C.) ”.

  In the above embodiment, an example in which the target water temperature of the cooling water changes is not disclosed, but the target water temperature (or target water temperature range) of the cooling water may be changed according to the heating required heat amount required for heating. .

In the above embodiment, the example of changing the flow rate of the cooling water passing through the heater core 31 is not disclosed, but the flow rate of the cooling water is changed by the water pump or the flow rate of the cooling water guided to the heater core 31 is adjusted. You may control the flow volume of the cooling water which passes the heater core 31 using a flow regulating valve.
Specifically, during the heating operation, it is conceivable that the amount of heat of the cooling water is excessively taken from the heater core 31 and the temperature of the cooling water in the cooling water circuit 32 is lowered in a short time. Therefore, the flow rate of the cooling water passing through the heater core 31 may be controlled (the amount of heat released from the heater core 31 is limited) to prevent the cooling water temperature from decreasing in a short time.

  In the above embodiment, the air heating means (heating condenser 41 in the embodiment) by the electric heating means 4 is arranged in series with the heater core 31, but the air heating means ( In the embodiment, the heating condenser 41) and the heater core 31 may be arranged in parallel.

  In the above embodiment, an example of using a heat pump cycle is shown as an example of the electric heating means 4, but other electric heaters such as a PTC heater may be used.

In the above embodiment, an example in which the present invention is applied to an air conditioner mounted on a hybrid vehicle has been described. However, instead of “hot water type heating means 3 for heating using engine cooling water”, “radiation of electric power system” The present invention may be applied to a vehicle air-conditioning apparatus using a hot water heating means 3 ”that performs heating using cooling water that performs heating.
In particular,
A hot water heating means 3 for heating using cooling water that dissipates heat from the power system;
An electric heating means 4 that consumes electric power and performs heating;
The present invention may be applied to a vehicle air conditioner (such as an air conditioner mounted on a fuel cell vehicle).

1 engine (internal combustion engine)
2 Motor generator 3 Hot water heating means 4 Electric heating means

Claims (10)

In a vehicle air conditioner mounted on a hybrid vehicle capable of switching between an internal combustion engine (1) and a motor generator (2),
This vehicle air conditioner
Hot water heating means (3) for heating using the cooling water of the internal combustion engine (1);
Electric heating means (4) for heating using electric power;
Control means for controlling operating states of the internal combustion engine (1) and the motor generator (2) such that the temperature of the cooling water of the internal combustion engine (1) is directed to a predetermined target water temperature or a predetermined target water temperature range;
A vehicle air conditioner comprising: In the vehicle air conditioner according to claim 1,
The electric heating means (4) compensates for the shortage of heating capacity by the hot water heating means (3). The vehicle air conditioner according to claim 1 or 2,
The said control means controls the operating state of the said internal combustion engine (1) and the said motor generator (2) based on the temperature of the said cooling water, The vehicle air conditioner characterized by the above-mentioned. The vehicle air conditioner according to claim 1 or 2,
The said control means controls the operating state of the said internal combustion engine (1) and the said motor generator (2) based on the driving | running | working load of a vehicle, The vehicle air conditioner characterized by the above-mentioned. The vehicle air conditioner according to claim 4,
The said control means controls the operating state of the said internal combustion engine (1) and the said motor generator (2) based on the average vehicle speed of a vehicle, The vehicle air conditioner characterized by the above-mentioned. The vehicle air conditioner according to claim 4,
The vehicle air conditioner characterized in that the control means controls operating states of the internal combustion engine (1) and the motor generator (2) based on an average operating rate of the internal combustion engine (1). The vehicle air conditioner according to claim 4,
The said control means controls the operating state of the said internal combustion engine (1) and the said motor generator (2) based on the average request | requirement power required for vehicle travel, The vehicle air conditioner characterized by the above-mentioned. The vehicle air conditioner according to claim 4,
The control means controls the operating states of the internal combustion engine (1) and the motor generator (2) based on future route information obtained from a car navigation system mounted on the vehicle. Air conditioner. In the vehicle air conditioner according to any one of claims 1 to 8,
The vehicle air conditioner characterized in that the target water temperature or the target water temperature range is changed according to a required heating amount of heat required for heating the passenger compartment. In the vehicle air conditioner according to any one of claims 1 to 9,
This vehicle air conditioner is a hybrid vehicle that replaces the hybrid vehicle with a fuel cell vehicle.
The vehicle air conditioner is characterized in that the hot water heating means (3) heats the passenger compartment using cooling water that dissipates heat from the power system.

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