JP5359040B2 - Air conditioning control device for vehicles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an occupant from feeling discomfort caused by excessive air-conditioning and not wasting the occupant's time for re-start, when the temperature or air volume of the air distributed to a vehicle interior is changed, and an engine is restarted after the changing operation. <P>SOLUTION: An air-conditioning control section 40c of an air-conditioning control unit 40 as this air-conditioning control device for a vehicle controls an operation of an air conditioning device so that the temperature or air volume of the air distributed to the vehicle interior is close to the occupant's desired value during automatic stop of the engine, and changes the control of the operation of the air conditioning device so that the temperature or air volume of the distributed air is close to the occupant's desired value just before automatic stop of the engine, or a value between the occupant's desired value just before restart of the engine and the occupant's desired value just before automatic stop of the engine when the temperature or air volume of the distributed air during the automatic stop of the engine is changed and the engine is restarted after the changing operation. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention automatically stops the engine when a predetermined engine stop condition is satisfied, and automatically restarts the automatically stopped engine when a predetermined engine restart condition is satisfied after that. The present invention belongs to a technical field related to a vehicle air-conditioning control device that controls the operation of an air-conditioning device mounted on a vehicle.

  Conventionally, it is known to automatically stop (idle stop) an engine mounted on a vehicle when the vehicle stops due to a signal or the like for the purpose of improving fuel consumption or reducing exhaust gas. In such a vehicle, for example, when the depression amount of the accelerator pedal of the occupant becomes 0 and the vehicle speed becomes 0, the engine is automatically stopped, and when the accelerator pedal is subsequently depressed, for example, the automatic stop is performed. The engine is automatically restarted.

  On the other hand, the vehicle is usually provided with an air conditioner that performs air conditioning in the passenger compartment of the vehicle. This air conditioner has a heat exchanger (heater core and evaporator) through which a heat transfer medium (engine cooling water and refrigerant) flows, and a water pump and a compressor that supply the heat transfer medium to the heat exchanger. The air passing through the heat exchanger is heated or cooled by heat exchange with the heat transfer medium supplied to the heat exchanger and blown into the vehicle interior, thereby air conditioning the vehicle interior. ing.

  The water pump and the compressor are usually driven by the engine. Therefore, when the engine is automatically stopped as described above, the water pump and the compressor are also stopped. The performance is lowered and the passengers feel uncomfortable.

Therefore, in Patent Document 1, for example, after the automatic stop condition of the engine is satisfied, the output amount of the air conditioner (the amount of air blown into the passenger compartment, etc.) is kept larger than that before the automatic stop condition is satisfied for a predetermined time. By stopping the engine, passenger discomfort due to a decrease in air conditioning performance is suppressed.
JP 2000-104584 A

  However, in the method of increasing the output amount of the air conditioner as in the above conventional example, the output amount of the air conditioner increases before the engine is automatically stopped. There is a possibility that the temperature change becomes severe, and there is room for improvement.

  Here, even if the engine is automatically stopped without increasing the output amount of the air conditioner, the air conditioning performance does not decrease suddenly but gradually decreases, and the passenger does not feel uncomfortable immediately, Moreover, it can be tolerated to some extent. And if a passenger | crew becomes unable to endure, for example according to the vehicle interior / exterior environment at that time, it will operate the operation switch and will change the temperature and the air volume of the ventilation air to a vehicle interior.

  Therefore, when the occupant changes the temperature or air volume of the blown air while the engine is automatically stopped, for example, if the engine is restarted after a lapse of a predetermined time from the time of the change operation, the occupant is not uncomfortable. In this way, the engine automatic stop time can be secured.

  However, in that case, when the engine is restarted, the air conditioner normally operates in response to the request value of the occupant who has been changed, so that there is a problem that, for example, air conditioning is too effective. That is, for example, when the engine automatically stops during the heating operation of the air conditioner, the occupant feels cold due to a decrease in the air conditioning performance, and changes the required value of the temperature of the blown air from 25 ° C to 30 ° C. After that, when the engine is restarted, if the required value remains at 30 ° C. with the air conditioning performance restored, the occupant will now feel hot and change to the original 25 ° C. Is required.

  The present invention has been made in view of such a point, and the object of the present invention is when there is an operation for changing the temperature or air volume of the blown air into the passenger compartment and the engine is restarted after the change operation. For example, it is intended to prevent the occupant from feeling uncomfortable due to excessive air conditioning and to prevent the occupant from having to re-operate.

  In order to achieve the above object, according to the present invention, during the automatic engine stop, the operation of the air conditioner is controlled so that the temperature or the air volume of the air blown into the passenger compartment approaches the occupant's required value. When there is a change operation of the temperature or air volume of the blown air during the automatic stop and the engine is restarted after the change operation, the temperature or air volume of the blown air is the required value of the occupant immediately before the engine automatic stop, or The operation control of the air conditioner is changed so as to approach a value between the passenger's required value immediately before the engine restart and the passenger's required value immediately before the engine automatic stop.

  Specifically, in the invention of claim 1, the engine and the engine are automatically stopped when a predetermined engine stop condition is satisfied, and the automatic stop is performed when a predetermined engine restart condition is subsequently satisfied. A vehicle air-conditioning control device that controls the operation of an air-conditioning device mounted on a vehicle provided with an idle stop control means that automatically restarts the engine that has been turned on.

  The air conditioner includes a heat exchanger through which a heat transfer medium flows and heat transfer medium supply means that is driven by the engine and supplies the heat transfer medium to the heat exchanger. The air passing through the vehicle is heated or cooled by heat exchange with the heat transfer medium supplied to the heat exchanger, and is blown into the vehicle interior of the vehicle so as to perform air conditioning of the vehicle interior. And operating means for enabling the occupant of the vehicle to set the temperature or air volume of the blast air to a value required by the occupant, and during the automatic stop of the engine, the temperature or air volume of the blast air is There is a request control means for controlling the operation of the air conditioner so as to approach the passenger's required value by the operating means, and there is an operation for changing the temperature or the air volume of the blown air by the operating means during the automatic stop of the engine, and Change operation When the engine is restarted later by the idle stop control means, the temperature or air volume of the blown air is determined by the occupant request value immediately before the engine automatic stop or the occupant request value immediately before the engine restart. Change control means for changing the operation control of the air conditioner so as to approach a value between the passenger's required value immediately before the engine automatic stop is provided.

  With the above-described configuration, the operation of the air conditioner is controlled by the request control means so that the temperature or the air volume of the blown air approaches the passenger's required value during the automatic stop of the engine. As time elapses from the start of the engine automatic stop, the air conditioning performance decreases, and the occupant feels uncomfortable and changes the temperature of the blown air or the air volume. For example, when the engine automatically stops during the heating operation of the air conditioner, the occupant feels cold due to a decrease in the air conditioning performance, and changes the temperature of the blown air to be increased. Then, the operation of the air conditioner is controlled by the request control means so that the temperature or air volume of the blown air approaches the requested value that has been changed, but the air conditioning performance is degraded. Pleasure is hard to be resolved.

  Thus, for example, the engine is restarted after a predetermined time has elapsed since the change operation. As a result, the air conditioning performance is restored, but the required value of the occupant at this time is a value that has been changed in a state where the air conditioning performance has deteriorated. If the operation is controlled, the air conditioning is now effective, and the occupant needs to change the temperature of the blown air or the air volume again.

  However, in the present invention, when the engine is restarted, the change control means causes the temperature or the air volume of the blown air to change the occupant request value immediately before the engine automatic stop or the occupant request value immediately before the engine restart and the engine automatic stop. The control is changed so as to approach a value between the passenger's required value immediately before. Therefore, after the engine is restarted, the operation of the air conditioner can be controlled so that the temperature or the air volume of the blown air approaches the temperature or the air volume that is truly required by the occupant. It is possible to prevent the occupant from feeling uncomfortable due to the excessive amount, and to prevent the occupant from taking the trouble of re-operation.

In the invention of claim 2, the engine is automatically stopped when a predetermined engine stop condition is satisfied, and the engine that is automatically stopped when the predetermined engine restart condition is subsequently satisfied is automatically The air conditioner includes a heat exchanger through which a heat transfer medium flows, and the engine. And a heat transfer medium supply means for supplying the heat transfer medium to the heat exchanger, and the air passing through the heat exchanger is converted into a heat transfer medium supplied to the heat exchanger. The air conditioner is configured to perform air conditioning in the vehicle interior by heating or cooling by heat exchange and blowing into the vehicle interior of the vehicle. The air conditioner is further provided with operation means for enabling a setting operation to the passenger's required value, so that the temperature or the air volume of the blown air approaches the passenger's required value by the operating means during the automatic stop of the engine. A request control means for controlling the operation, and when the operation means changes the temperature or air volume of the blown air during the automatic stop of the engine, and the engine is restarted by the idle stop control means after the change operation. The temperature or air volume of the blown air is between the occupant request value immediately before the engine automatic stop, or the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. and a change control means for changing the operation control of the air conditioner so as to approach the value, the changing control means stops automatic of the engine Change of the air conditioner operation control when the engine is restarted by the idle stop control means after the change operation after a specific period from the start of the automatic engine stop to a predetermined time. It shall be comprised so that it may implement.

That is, by setting the specific period as a period in which the air conditioning performance does not deteriorate to such an extent that the passengers feel uncomfortable, if there is a change operation after such a specific period, the change operation is It is highly likely that this was done because the passengers felt uncomfortable due to a decrease in performance.Therefore, with the air conditioning performance restored by restarting the engine, the temperature of the air blown into the passenger compartment or the amount wind, by controlling the operation of the air conditioner so as to approach the required value of the occupant from the past specified period, too effectiveness air conditioning, passenger need to re change operation occurs. However, in the present invention, temperature or air volume of air blown into the passenger compartment is the passenger demand value in the engine automatic stop immediately before, or, passenger demand in the request value and the automatic engine stop immediately before the occupant in the engine restart immediately before Since the operation control of the air conditioner is changed so as to approach a value between the values, there is no possibility that the passenger feels uncomfortable due to the effect of the air conditioning.

In the invention of claim 3, the engine is automatically stopped when a predetermined engine stop condition is established, and the engine that is automatically stopped is automatically activated when a predetermined engine restart condition is subsequently established. The air conditioner includes a heat exchanger through which a heat transfer medium flows, and the engine. And a heat transfer medium supply means for supplying the heat transfer medium to the heat exchanger, and the air passing through the heat exchanger is converted into a heat transfer medium supplied to the heat exchanger. The air conditioner is configured to perform air conditioning in the vehicle interior by heating or cooling by heat exchange and blowing into the vehicle interior of the vehicle. The air conditioner is further provided with operation means for enabling a setting operation to the passenger's required value, so that the temperature or the air volume of the blown air approaches the passenger's required value by the operating means during the automatic stop of the engine. A request control means for controlling the operation, and when the operation means changes the temperature or air volume of the blown air during the automatic stop of the engine, and the engine is restarted by the idle stop control means after the change operation. The temperature or air volume of the blown air is between the occupant request value immediately before the engine automatic stop, or the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. and a change control means for changing the operation control of the air conditioner so as to approach the value, the engine during the automatic stop of the engine When the change operation is performed only during a specific period from the start of automatic stop to the predetermined time and the engine is restarted by the idle stop control means after the change operation, the change control means changes the operation control of the air conditioner. It is further assumed that a regulating means for regulating is further provided.

  That is, by setting the specific period as a period in which the air conditioning performance does not deteriorate to such an extent that the passengers feel uncomfortable, it is determined that the change operation during the specific period is not caused by a decrease in the air conditioning performance. be able to. Therefore, the temperature or the air volume changed during the specific period is considered to be the temperature or the air volume that the occupant wanted to change even if the air conditioning performance was sufficient. In the present invention, when there is a change operation only during a specific period during the automatic stop of the engine and the engine is restarted after the change operation, the change control unit restricts the change of the air conditioner operation control by the change control unit. Therefore, it is possible to control the operation of the air conditioner so that the temperature or air volume of the blown air is close to the temperature or air volume that the occupant really demands. This can be prevented more reliably.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the air conditioner further includes a display unit that is provided in a vehicle interior and displays a requested value of the occupant by the operation unit. When the engine is restarted, display change means for changing the display by the display means in response to the change by the change control means when the operation control of the air conditioner is changed by the change control means. It is assumed that it is further provided.

  As a result, the display by the display means is changed in response to the change by the change control means after the engine is restarted, so that the occupant feels uncomfortable due to the difference between the display by the display means and the manner of operation of the air conditioner. Can be prevented.

  As described above, according to the vehicle air-conditioning control device of the present invention, when there is an operation for changing the temperature or air volume of the blown air into the passenger compartment while the engine is automatically stopped, and the engine is restarted after the change operation. The temperature or air volume of the blown air approaches a value required by the occupant immediately before the engine is automatically stopped, or a value between the occupant required value immediately before the engine restart and the occupant required value immediately before the engine is automatically stopped. By adopting a configuration that changes the operation control of the air conditioner, when there is an operation to change the temperature or air volume of the blown air into the passenger compartment and the engine is restarted after the change operation, the air conditioning is not effective and the passenger is not It is possible not to give a pleasant feeling and to prevent the occupant from taking the trouble of re-operation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a configuration of an idle stop system including an air conditioning control unit 40 as a vehicle air conditioning control device according to an embodiment of the present invention. This idle stop system is an air conditioning control that controls the operation of an engine control unit 20 that controls the operating state of an engine 68 (see FIG. 2) of a vehicle and an air conditioner 1 (see FIG. 2) that will be described later. Unit 40.

  The engine control unit 20 constitutes an idle stop control means, and automatically stops the engine 68 by no ignition or fuel cut regardless of the intention of the vehicle occupant (driver) when a predetermined engine stop condition is satisfied. Thus, useless idling operation is suppressed, and carbon dioxide, nitrogen oxides and the like discharged from the engine 68 are reduced. Further, the engine control unit 20 automatically restarts the engine 68 that has been automatically stopped when a predetermined engine restart condition is satisfied after the engine 68 has been automatically stopped.

  As the predetermined engine stop condition, for example, an accelerator pedal depression amount detected by an accelerator stroke sensor 24 described later is 0, and a vehicle speed detected by a vehicle speed sensor 21 described later is a predetermined value (substantially the vehicle is stopped). A value that can be determined as being, for example, 10 km / h) or less, or that the depression amount of the accelerator pedal is 0 and a parking brake operation is detected by a parking brake switch 22 described later. . On the other hand, the predetermined engine restart condition is that the predetermined engine stop condition is not satisfied during the automatic stop of the engine 68. In the present embodiment, the condition that an engine restart signal (described later) output from the air conditioning control unit 40 is received is also one of the engine restart conditions. The timing at which the air conditioning control unit 40 outputs an engine restart signal to the engine control unit 20 will be described later.

  The engine control unit 20 is electrically connected to the air conditioning control unit 40 so as to be communicable with each other, and receives an engine restart signal output from the air conditioning control unit 40 while the engine 68 is automatically stopped. ing.

  In addition, during operation of the engine 68, the engine control unit 20 determines the ignition timing and fuel injection amount for the engine 68 in accordance with the accelerator pedal operation of the passenger (the amount of depression of the accelerator pedal detected by the accelerator stroke sensor 24). Is controlled in accordance with a preset operation program of the engine 68 to control the operation state of the engine 68.

  The engine control unit 20 and the air conditioning control unit 40 include a CPU, a ROM, a RAM, an I / O port, a peripheral circuit, and the like for executing arithmetic processing and a control program to be described later based on detection signals from various sensors and switches.

  The engine control unit 20 includes a vehicle speed sensor 21 that detects the vehicle speed of the vehicle, a parking brake switch 22 that detects a parking brake operation by a passenger's pedal or lever, and an accelerator stroke sensor 24 that detects the amount of depression of the accelerator pedal. Electrically connected. The vehicle speed sensor 21 detects, for example, the wheel speed and the output shaft rotational speed of the transmission, and outputs the detected speed to the engine control unit 20 as a vehicle speed signal. The parking brake switch 22 outputs a parking brake operation signal to the engine control unit 20 when the parking brake is operated by the occupant. The accelerator stroke sensor 24 detects the amount of depression of the accelerator pedal by the occupant and outputs a stroke signal to the engine control unit 20.

  The air conditioning control unit 40 includes various switches 73a to 73f operated by a passenger, an inside air temperature sensor 74, an outside air temperature sensor 75, a water temperature sensor 76, a blower motor 61a, an inside / outside air switching motor 69, a blowing mode switching motor 70, an air mix damper. The motor 71 and the display unit 81 are electrically connected. The switches 73a to 73f, the sensors 74 to 76, the motors 61a and 69 to 71, and the display unit 81 will be described later.

  As shown in FIG. 2, the air conditioner 1 is composed of a unit having a ventilation duct 51 that guides conditioned air into the vehicle interior, and introduces outside air to the upstream side of the ventilation duct 51. An outside air introduction port 52, an inside air introduction port 53 for introducing air in the vehicle interior, and a switching damper 54 for selectively opening and closing the outside air introduction port 52 and the inside air introduction port 53 are provided.

  A vent air outlet 55, a foot air outlet 56, and a defroster air outlet 57 are disposed on the downstream side of the ventilation duct 51. The mode switching dampers 58, 59, and 60 are connected to the air outlets 55, 56, and 57, respectively. By selectively opening and closing the duct portion communicating with the air outlet, the amount of conditioned air discharged from each outlet 55, 56, 57 is adjusted.

  The air conditioner 1 includes a variable air volume type blower 61 disposed on the upstream side of the ventilation duct 51, and an evaporator 62 disposed on the downstream side of the blower 61 and through which a refrigerant as a heat transfer medium flows. An air mix damper 63 (also referred to as an air mix door) disposed on the downstream side of the evaporator 62 and a heater core 64 through which engine coolant as a heat transfer medium flows are provided. The evaporator 62 is a cooling heat exchanger that cools the air that passes through the evaporator 62 by heat exchange with the refrigerant supplied to the evaporator 62, and the heater core 64 converts the air that passes through the heater core 64 into the air that passes through the heater core 64. It is a heating heat exchanger that heats by heat exchange with the engine coolant supplied to the heater core 64.

  The blower 61 is configured to blow the air taken into the ventilation duct 51 from the outside air introduction port 52 or the inside air introduction port 53 into the vehicle interior via the air outlets 55, 56, and 57. The evaporator 62 is connected to a refrigerant circulation circuit X having a compressor 65, a condenser 66 and a receiver 67. The compressor 65 constitutes a heat transfer medium supply unit that supplies refrigerant to the evaporator 62, and is driven by the engine 68 to supply compressed refrigerant to the evaporator 62. The compressor 65 is selectively engaged or released with respect to the rotating element of the engine 68 by on / off control of the electromagnetic clutch.

  The heater core 64 is connected to a cooling water circulation path of the engine 68 having the water pump 31. The water pump 31 constitutes a heat transfer medium supply means for supplying engine cooling water to the heater core 64, and is driven by the engine 68 to supply engine cooling water from the engine 68 to the heater core 64. A coolant temperature sensor 76 that detects the temperature of the engine coolant in that portion is disposed in the coolant passage in the engine 68 (in the present embodiment, in the vicinity of the outlet to the heater core 64). The water temperature sensor 76 may be disposed in the vicinity of the engine 68 in a pipe for sending engine cooling water from the engine 68 to the heater core 64 side.

  The amount of air passing through the heater core 64 is controlled in accordance with the opening degree of the air mix damper 63 disposed between the evaporator 62 and the heater core 64. The air mix damper 63 guides the air that has passed through the evaporator 62 to the heater core 64, and the mixing ratio of the air heated by the heater core 64 and the air that bypasses the heater core 64 according to the opening of the air mix damper 63. Adjust.

  That is, the air mix damper 63 is driven by an air mix damper motor 71 formed of a servo motor, and all the air that has passed through the evaporator 62 is blown to the outlets 55, 56, 57 without passing through the heater core 64. And a fully open position indicated by phantom lines in which all of the air passes through the heater core 64 and is blown to the air outlets 55, 56, 57, and passes through the heater core 64. Thus, the air which bypasses the heater core 64 is mixed and can be set to an intermediate position where the air is blown to the outlets 55, 56 and 57. As described above, the air mix damper 63 has a fully open position (opening degree 100%) where all the air that has passed through the evaporator 62 is supplied to the heater core 64 and a fully closed position (opening degree where all the air bypasses the heater core 64). 0), the opening degree is adjusted steplessly, so that conditioned air is generated and blown into the vehicle interior. The temperature of the blown air can be adjusted steplessly in accordance with the mixing ratio within the range of the maximum temperature obtained at the fully open position and the minimum temperature obtained at the fully closed position.

  The air conditioner 1 further includes an inside / outside air switching motor 69 that drives the inside / outside air switching damper 54, a blow-out mode switching motor 70 that drives the mode switching dampers 58, 59, 60, and a front end portion of the vehicle interior of the vehicle. It is provided on an instrument panel provided and has an operation unit 73 for an occupant to operate and set air conditioning conditions.

  The operation unit 73 includes various switches operated by the occupant, for example, an air conditioner on / off switch 73a for switching between operation and non-operation of the air conditioner 1, and the passenger compartment temperature (the temperature of the blown air into the passenger compartment). The vehicle interior temperature setting switch 73b set to the required value required by the vehicle, the inside / outside air changeover switch 73c for setting the introduction ratio of the inside and outside air, the blowout mode changeover switch 73d for selecting the air outlet of the conditioned air, and the air conditioning switch for switching between cooling and heating There are provided a switch 73e, an air volume changeover switch 73f for setting the air volume blown from the air outlet (the volume of air blown into the passenger compartment) to a required value required by the occupant. The occupant can also select an automatic mode that is automatically determined as described later regardless of the occupant's required value by the air volume changeover switch 73f. In addition, the operation unit 73 is provided with a display unit 81 as display means that displays the passenger compartment temperature and the passenger compartment temperature that is required by the occupant and the amount of air blown from the outlet.

  The vehicle interior temperature setting switch 73b is configured to set the required value of the vehicle interior temperature within a range of 18 ° C to 32 ° C. When the operation of the air conditioner 1 is stopped by the air conditioning on / off switch 73a, the compressor 65 and the blower motor 61a of the blower 61 are stopped.

  In the air conditioning control unit 40, a switch signal is input from the operation unit 73, and an air conditioning control unit that controls the operating states of the motors 69, 70, 71 and the air flow rate of the blower 61 according to the input. 40c is provided (see FIG. 1). In response to the operation of the operation unit 73 by the occupant, the air conditioning control unit 40c operates the inside / outside air switching motor 69 and the blow mode switching motor 70 to switch the air conditioning mode, and operates the air mix damper motor 71 to operate the air. The opening degree of the mix damper 63 is configured to be adjusted. The air conditioning control unit 40c controls the operation and stop of the blower motor 61a of the blower 61 according to the operation of the air conditioning on / off switch 73a by the occupant, and the application to the blower motor 61a according to the operation of the air volume changeover switch 73f. By controlling the voltage, the air volume of the blower 61 is adjusted to control the air volume of the air conditioner 1. Further, the air conditioning control unit 40c controls the display of the vehicle interior temperature and the blown air volume displayed on the display unit 81 in accordance with the operation of the indoor temperature setting switch 73b and the air volume changeover switch 73f.

  The air conditioner 1 further includes an inside air temperature sensor 74 that is installed in the lower part of the instrument panel and detects the temperature inside the vehicle, and an outside air temperature sensor 75 that detects the outside air temperature around the vehicle. A detection signal is input to the air conditioning control unit 40.

  Then, the air conditioning control unit 40c of the air conditioning control unit 40 performs air mixing based on a value ΔT obtained by subtracting the vehicle interior temperature detected by the internal air temperature sensor 74 from the vehicle interior temperature requested value by the vehicle interior temperature setting switch 73b. The opening degree of the damper 63 and the air flow rate of the blower 61 are determined (the air flow rate of the blower 61 is determined in the case of the automatic mode). Specifically, as shown in the maps of FIGS. 3 and 4, as ΔT increases, the opening degree of the air mix damper 63 and the air volume of the blower 61 are increased. However, the opening degree of the air mix damper 63 is corrected in accordance with the engine cooling water temperature Tw detected by the water temperature sensor 76, and the correction amount is the engine cooling water temperature Tw as shown in the map of FIG. As it grows, it gets smaller.

  The air-conditioning control unit 40c also changes the vehicle interior temperature required value by the vehicle interior temperature setting switch 73b or when the air flow rate changeover switch 73f changes the required air flow rate from the outlet (automatic mode). Corresponding to the changed required value (with the required value as a target value of the passenger compartment temperature and the blown air volume), that is, the operation of the air conditioner 1, that is, the opening degree of the air mix damper 63 and The air volume of the blower 61 is controlled. That is, when the required value of the vehicle interior temperature is changed, the opening degree of the air mix damper 63 is changed so that the vehicle interior temperature detected by the internal air temperature sensor 74 approaches the required value, and the request for the blown air volume is made. When the value is changed, the voltage applied to the blower motor 61a is changed so that the air flow rate of the blower 61 approaches the required value. The operation control of the air conditioner 1 by the air conditioning control unit 40c (control corresponding to the passenger's requested value) is performed not only during the operation of the engine 68 but also during the automatic stop of the engine 68.

  The passenger compartment temperature setting switch 73b constitutes operating means that allows the passenger to set the temperature of the air blown into the passenger compartment to the passenger's required value, and the air volume changeover switch 73f allows the passenger to enter the passenger compartment. The air conditioning control unit 40c is configured to allow the air flow rate of the blown air to be set to the passenger's requested value. The request control means for controlling the operation of the air conditioner 1 is configured so as to approach the passenger's required value by the means.

  In the present embodiment, the air conditioning control unit 40 is provided with a temperature estimation unit 40a that estimates the temperature of the engine coolant in the heater core 64 during the automatic stop of the engine 68. This temperature estimation part 40a is the operation state of the said air conditioner 1 by the air-conditioning control part 40c (the operation state (opening degree) of the air mix damper 63, the air volume of the blowing air to a vehicle interior, the vehicle interior which a passenger | crew requests | requires by operation) Temperature), the detected value of the outside air temperature sensor 75, and the detected value of the water temperature sensor 76, the temperature of the engine coolant in the heater core 64 is estimated. That is, the estimated temperature changes (decreases) with the passage of time from the stop of the engine 68, and the state of the change depends on the operating state of the air conditioner 1, the detected value of the outside air temperature sensor 75, and the detection of the water temperature sensor 76. The engine cooling water in the heater core 64 is examined in advance in correspondence with the value, taking into account the time from the stop of the engine 68 based on the operating state of the air conditioner 1 immediately after and during the stop of the engine 68. Estimate temperature. Although the actual temperature of the engine coolant in the heater core 64 varies greatly depending on the portion of the heater core 64, the estimated temperature can be regarded as the average temperature of the engine coolant in the entire heater core 64. Instead of estimating the temperature of the engine coolant in the heater core 64, the temperature of the engine coolant in the vicinity of the heater core 64 may be estimated.

  Further, in the air conditioning control unit 40, the restart timing of the engine 68 by the engine control unit 20 is controlled based on the estimated temperature estimated by the temperature estimation unit 40a during the automatic stop of the engine 68. A restart control unit 40b is provided. Specifically, when the predetermined engine restart condition is not satisfied and the estimated temperature falls below a predetermined lower limit temperature, the restart control unit 40b waits for a predetermined time from when the lower limit temperature is exceeded. When the time has elapsed, an engine restart signal is output to the engine control unit 20. Hereinafter, a period from the start of the automatic stop of the engine 68 to the time when the estimated temperature falls below the lower limit temperature (corresponding to a predetermined time) is referred to as a specific period.

  The predetermined lower limit temperature is set to a value such that when the estimated temperature falls below the lower limit temperature, the air conditioning performance is excessively deteriorated and the passenger is uncomfortable. The predetermined time is a time (for example, more than 0 and 20 seconds or less) that the occupant can tolerate to some extent even if the occupant feels uncomfortable when the estimated temperature falls below a predetermined lower limit temperature. Set. This predetermined time may be changed according to the detection value of the outside air temperature sensor 75. That is, the predetermined time is shortened as the outside air temperature is lower.

  Here, as described above, the air-conditioning control unit 40c brings the vehicle interior temperature or the amount of air blown from the air outlet close to the required value by the vehicle interior temperature setting switch 73b or the air flow changeover switch 73f even during the automatic stop of the engine 68. As described above, the operation control of the air conditioner 1 is performed. When the specific time has passed (when the estimated temperature falls below the lower limit temperature), it becomes difficult to approach the passenger's required value due to a decrease in air conditioning performance. For this reason, a passenger | crew becomes high possibility of changing operation of the vehicle interior temperature or the blowing air volume from a blower outlet by the vehicle interior temperature setting switch 73b or the air volume switch 73f.

  Thus, when the change operation is performed after the specific period and the engine 68 is restarted after the change operation, the air-conditioning control unit 40c determines the temperature of the passenger compartment or the amount of air blown from the air outlet of the occupant who has performed the change operation. The operation control of the air conditioner 1 is changed so as to approach the passenger's required value immediately before the engine automatic stop instead of the required value. In other words, the target value of the passenger compartment temperature or the blown air volume is changed from the passenger's required value that has been changed to the passenger's required value immediately before the engine is automatically stopped. As a result, the air conditioning control unit 40c determines that the temperature or air volume of the blown air into the vehicle compartment is the engine automatic when the change operation is performed while the engine 68 is automatically stopped and the engine 68 is restarted after the change operation. The change control means for changing the operation control of the air conditioner 1 so as to approach the passenger's required value immediately before the stop is configured. It should be noted that the operation control of the air conditioner 1 is changed so that the vehicle interior temperature or the blown air volume approaches a value between the passenger's required value immediately before the engine restart and the passenger's required value immediately before the engine automatic stop (vehicle interior). The target value of the temperature or the blown air volume may be changed to a value between the occupant request value just before the engine restart and the occupant request value just before the engine automatic stop). For example, if there is a change operation during the specified period, the requested value of the occupant that has been changed is a value between the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. If this is the case (often such a case), the operation control of the air conditioner 1 may be changed so as to approach the required value of the passenger who has been changed during the specific period.

  When the operation control of the air conditioner 1 is changed when the engine 68 is restarted, the air conditioning control unit 40c changes the display by the display unit 81 corresponding to the change of the operation control of the air conditioner 1. . That is, the air conditioning control unit 40c changes the display on the display unit 81 from the occupant request value that has been changed to the occupant request value immediately before the engine is automatically stopped. Thus, the air conditioning control unit 40c constitutes a display changing unit that changes the display by the display unit 81 in response to the change by the change control unit.

  On the other hand, when the engine 68 is automatically stopped and the change operation is performed only during the specific period and the engine 68 is restarted after the change operation, the operation control of the air conditioner 1 is changed by the air conditioning control unit 40c. The air conditioning control unit 40 is regulated by a regulation unit 40d. In this way, when the engine 68 is automatically stopped and the change operation is performed only during the specific period and the engine 68 is restarted after the change operation, the restricting unit 40d performs the change of the air conditioner 1 by the change control means. A restricting means for restricting the change of the operation control is configured.

  As described above, when the engine 68 is automatically stopped and the change operation is performed only during the specific period and the engine 68 is restarted after the change operation, the air conditioning controller 40c changes the vehicle interior temperature or the blown air volume. The operation of the air conditioner 1 is controlled so as to approach the required value of the operated occupant. That is, even if the engine 68 is restarted, the target value of the passenger compartment temperature or the blown air volume is kept at the value required by the passenger who has been changed.

  Here, since the specific period is a period in which the air conditioning performance has not deteriorated to such an extent that the passengers feel uncomfortable, the change operation in the specific period is not caused by a decrease in the air conditioning performance, and the air conditioning performance is sufficient. Even if it is, it is thought that it is the temperature or the air volume that the occupant wanted to change. Therefore, when there is a change operation only during a specific period, the change of the operation control of the air conditioner 1 is restricted by the restricting unit 40d, and the vehicle interior temperature or the blown air volume is brought close to the temperature or air volume that the occupant really requires. Like that.

  On the other hand, if there is a change operation after a specific period, it is highly likely that this change operation was caused by the passenger feeling uncomfortable due to a decrease in air conditioning performance. If the operation of the air conditioner 1 is controlled so that the passenger compartment temperature or the blown air volume approaches the passenger's required value after a specific period while the air conditioning performance has been restored by restarting the engine 68, the air conditioning is too effective. Thus, the occupant needs to perform a re-change operation. However, in this embodiment, since the operation of the air conditioner 1 is controlled so that the passenger compartment temperature or the blown air volume approaches the passenger's required value immediately before the engine is automatically stopped, the passenger will feel uncomfortable due to excessive air conditioning. There is nothing wrong.

  Here, when the engine interior temperature is automatically stopped and the vehicle interior temperature or the amount of air blown from the air outlet is changed during the specific period, the temperature estimation unit 40a performs the air conditioning control unit 40 after the change operation. The engine cooling in the heater core 64 is based on the operating state of the air conditioner 1 (particularly the operating state (opening) of the air mix damper 63) corresponding to the occupant request value after the change operation by the air conditioning control unit 40c. Estimate water temperature. Then, similarly to the case where there is no change operation, the restart control unit 40b, when the estimated temperature falls below the predetermined lower limit temperature, at the time when the predetermined time elapses from when the estimated temperature falls below the lower limit temperature. The engine restart signal is output to the engine control unit 20.

  Next, a series of control operations of the engine control unit 20 and the air conditioning control unit 40 will be described based on the flowchart of FIG.

  In the first step S1, data is input from various sensors, switches, etc., and in step S2, it is determined whether or not an engine stop condition is satisfied. If the determination in step S2 is YES, the process proceeds to step S3, the engine 68 is stopped, and the temperature of the engine coolant in the heater core 64 is estimated in the next step S4.

  After step S4, it is determined in step S5 whether the estimated temperature has fallen below the predetermined lower limit temperature (whether a specific period has passed). When the determination in step S5 is NO, the process proceeds to step S6, and it is determined whether or not there is an operation for changing the vehicle interior temperature or the amount of air blown from the outlet.

  If the determination in step S6 is YES, the process proceeds to step S7, the flag F is set to 1, and then the process proceeds to step S10. The flag F indicates whether or not there has been a change operation, and if there has been a change operation, indicates whether the change operation has been in a specific period or has passed a specific period. If there is a change operation even once, it is set to 1, and if there is even a change operation once after a specific period, it is set to 2 (even if it is set to 1 in a specific period, it passes the specific period If there is a change operation from 1), it is changed from 1 to 2.

  On the other hand, if the determination in step S6 is NO, the process proceeds to step S8 to determine whether or not the flag F is 1, and if the determination in step S8 is YES, the process proceeds to step S10 as it is. On the other hand, if the determination in step S8 is no, the process proceeds to step S9, the flag F is set to 0, and then the process proceeds to step S10.

  In step S10, air conditioning control is performed in accordance with the passenger's required value. That is, the opening degree of the air mix damper 63 and the air flow rate of the blower 61 are controlled so that the temperature or the air flow rate of the blown air into the passenger compartment approaches the occupant's required value. If there is an operation for changing the temperature in the passenger compartment or the amount of air blown from the air outlet regardless of whether the engine 68 is operating or automatically stopped, the air conditioning control corresponding to the passenger's required value after the operation is changed. I do. After this step S10, the process returns.

  On the other hand, if the determination in step S5 is YES, the process proceeds to step S11, and it is determined whether or not there has been an operation for changing the passenger compartment temperature or the amount of air blown from the air outlet. If the determination in step S11 is YES, the process proceeds to step S12, the flag F is set to 2, and then the process proceeds to step S10. On the other hand, if the determination in step S11 is no, the process proceeds directly to step S10. In other words, when there is no change operation after the specific period, the flag F is maintained at the currently set value (if there is no change operation during the specific period, it remains 0, If there is a change operation, it remains 1; if there is a change operation even once after the specified period and flag F is set to 2, it remains 2).

  Although omitted in the flowchart of FIG. 6, if the determination in step S <b> 5 is YES, a timer for counting the predetermined time is set separately, the timer count starts, and when the timer count ends, the air conditioning control unit An engine restart signal is output from 40 to the engine control unit 20, and the engine stop condition is not satisfied.

  When the engine stop condition is not satisfied and the determination in step S2 is NO (including the case where the engine restart signal is output from the air conditioning control unit 40 to the engine control unit 20), the process proceeds to step S13. The engine operation is permitted, and then the process proceeds to step S14 to determine whether or not the flag F is zero.

  If the determination in step S14 is YES, the process proceeds to step S10 as it is. If the determination in step S14 is NO, the process proceeds to step S15 to determine whether the flag F is 1 or not. .

  If the determination in step S15 is NO (that is, if the flag F = 2 and the vehicle interior temperature or the blown air volume has been changed once after the specified period has elapsed), step Proceeding to S16, the operation control of the air conditioner 1 is changed so that the passenger compartment temperature or the blown air volume approaches the passenger's required value immediately before the engine is automatically stopped, and the display by the display unit 81 is displayed. Change in response to control changes. In step S17, the flag F is set to 0. Thereafter, the process proceeds to step S10. On the other hand, if the determination in step S15 is yes, the process proceeds to step S17, and then proceeds to step S10.

  When the engine 68 is automatically stopped by the above control operation, the temperature estimating unit 40a estimates the temperature of the engine coolant in the heater core 64. As shown in FIG. 7, the estimated temperature decreases with the passage of time from the stop of the engine 68. If the estimated temperature falls below a predetermined lower limit temperature Tw1 in a state where the predetermined restart condition is not satisfied, the engine 68 is restarted when a predetermined time t1 elapses from the time when the estimated temperature falls below (the point A). To do. As a result, when the estimated temperature falls below the predetermined lower limit temperature Tw1 and becomes uncomfortable for the occupant, the engine 68 is restarted when the predetermined time t1 has elapsed since then.

  Then, there is a possibility that the occupant changes the passenger compartment temperature or the amount of air blown from the outlet after the estimated temperature falls below the predetermined lower limit temperature Tw1 until the predetermined time t1 elapses. When there is a change operation, the operation control of the air conditioner 1 is performed so that the passenger compartment temperature or the blown air volume approaches the required value of the passenger who has performed the change operation. After that, when the engine 68 is restarted, the operation control of the air conditioner 1 is performed so that the passenger compartment temperature or the blown air flow approaches the occupant request value immediately before the engine is automatically stopped, not the occupant request value that has been changed. In addition to the change, the display on the display unit 81 is changed in response to the change in the operation control of the air conditioner 1. For example, the required value of the passenger compartment temperature immediately before the engine is automatically stopped is 25 ° C. (display on the display unit 81 is also 25 ° C.), and is changed to 30 ° C. by the change operation (the display on the display unit 81 is also changed to 30 ° C. When the engine 68 is restarted, the vehicle interior temperature target value is set to 25 ° C. instead of 30 ° C. (the display by the display unit 81 is also set to 25 ° C.). It is highly possible that the passenger changed to 30 ° C because of a decrease in air conditioning performance (heating capacity). If the target value is kept at 30 ° C after restarting the engine 68, air conditioning will be too effective this time. However, in this embodiment, since the original temperature is 25 ° C., the air conditioning does not cause discomfort to the occupant due to excessive air conditioning, and the occupant takes time to re-operate. You can avoid it.

  On the other hand, when there is an operation for changing the temperature in the passenger compartment or the amount of air blown from the outlet during the specified period while the engine 68 is stopped, the temperature in the passenger compartment or the amount of air blown out is the required value of the passenger who has been changed. Operation control of the air conditioner 1 is performed so that it may approach. Further, the temperature of the engine coolant in the heater core 64 is estimated based on the operating state of the air conditioner 1. Here, if the passenger feels cold and raises the passenger compartment temperature, the opening of the air mix damper 63 increases and the amount of air passing through the heater core 64 increases. Therefore, as shown by the one-dot chain line in FIG. The estimated temperature is lower than when there is no operation, whereby the end point of the specific period changes from point A to point B, and the engine 68 restarts when a predetermined time t1 has elapsed from point B. It will be.

  After the change operation for the specific period, if there is another change operation after the specific period (after point B) and the engine 68 is restarted after the rechange operation, the air conditioner is the same as above. 1 operation control is changed. On the other hand, when the engine 68 is restarted in a specific period after the change operation, or when the engine 68 is restarted without any change operation again after the specific period, the operation control of the air conditioner 1 is performed. Is controlled, and the air conditioner 1 is controlled so as to approach the required value of the occupant who has been changed during the specific period. As a result, the vehicle interior temperature or the blown air volume can be brought close to the temperature or air volume that the occupant really requires.

  In the above embodiment, when the engine 68 is automatically stopped, there is an operation for changing the temperature in the passenger compartment or the amount of air blown from the outlet only during a specific period, and the air conditioner is operated when the engine 68 is restarted after the change operation. However, even if there is an operation for changing the vehicle interior temperature or the blown air volume only during a specific period and the engine 68 is restarted after the change operation, the change in the operation control of 1 is controlled from the vehicle interior temperature or the air outlet. The airflow volume of the passenger is a value between the occupant request value immediately before the engine is automatically stopped, or a value between the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop (for example, twice in a specific period). When there is a change operation and the vehicle interior temperature and the blown air volume are gradually increased, the operation control of the air conditioner is changed so as to approach the value required by the first change operation). It may be so.

  In the above embodiment, the temperature estimation unit 40a estimates the temperature of the engine cooling water in the heater core 64. However, the temperature of the refrigerant in or near the evaporator 62 may be estimated. This estimation is based on at least one of the operating state of the air conditioner 1, the detected value of the outside air temperature sensor 75, and the detected value of the refrigerant temperature sensor that detects the temperature of the refrigerant in the vicinity of the refrigerant discharge port of the compressor 65. Just do it. Then, the restart control unit 40b starts restarting the engine 68 by the engine control unit 20 based on the estimated temperature of the refrigerant.

  Here, the temperature of the engine coolant in or near the heater core 64 decreases with time during the automatic stop of the engine 68, but the temperature of the refrigerant in or near the evaporator 62 Therefore, when the estimated temperature of the refrigerant exceeds a predetermined upper limit temperature, it changes for a predetermined time (according to the detection value of the outside air temperature sensor 75) from the time when the upper limit temperature is exceeded. The engine 68 may be restarted at the time when it may elapse.

  Further, the engine restart signal is output from the air conditioning control unit 40 to the engine control unit 20 regardless of the estimated temperature of the engine coolant or the refrigerant, for example, during the elapsed time from the start of the automatic stop of the engine 68. Also good. Alternatively, a temperature sensor that detects the temperature of the air may be provided on the downstream side of the heater core 64 or the evaporator 62, and the engine restart signal may be output based on the detection value of the temperature sensor. Or even if it does not output the engine restart signal from the air-conditioning control unit 40 to the engine control unit 20, the present invention can be applied.

  The present invention automatically stops the engine when a predetermined engine stop condition is satisfied, and automatically restarts the automatically stopped engine when a predetermined engine restart condition is satisfied after that. This is useful for a vehicle air conditioning control device that controls the operation of an air conditioning device mounted on a vehicle.

It is a block diagram which shows the structure of the idle stop system containing the air-conditioning control unit as a vehicle air-conditioning control apparatus which concerns on embodiment of this invention. It is the schematic which shows the structure of the air conditioner which a vehicle air conditioner control apparatus controls. It is a map which shows the relationship between the opening degree of an air mix damper, and the value (DELTA) T which subtracted the vehicle interior temperature detected by the internal air temperature sensor from the vehicle interior temperature request value by a vehicle interior temperature setting switch. It is a map which shows the relationship between the amount of ventilation of a fan, and the value (DELTA) T which subtracted the vehicle interior temperature detected by the internal temperature sensor from the request value of the vehicle interior temperature by a vehicle interior temperature setting switch. It is a map which shows the relationship between the corrected amount of the opening degree of an air mix damper, and the temperature of the engine cooling water detected by the water temperature sensor. It is a flowchart which shows a series of control operation | movement of an engine control unit and an air-conditioning control unit. It is a graph which shows the change of the estimated temperature of the engine cooling water in a heater core after an engine stop.

1 Air conditioner 20 Engine control unit (idle stop control means)
31 Water pump (heat transfer medium supply means)
40 Air conditioning control unit (air conditioning control system for vehicles)
40c Air-conditioning control unit (request control means) (change control means) (display change means)
40d Regulation part (regulation means)
62 Evaporator (cooling heat exchanger)
64 Heater core (heat exchanger for heating)
65 Compressor (heat transfer medium supply means)
68 Engine 73b Car interior temperature setting switch (operating means)
73f Air volume switch (operating means)
81 Display section (display means)

Claims (4)

Idle stop control that automatically stops the engine when a predetermined engine stop condition is satisfied and automatically restarts the engine when the predetermined engine restart condition is satisfied after that A vehicle air-conditioning control device for controlling the operation of an air-conditioning device mounted on a vehicle comprising means,
The air conditioner includes a heat exchanger through which a heat transfer medium flows, and heat transfer medium supply means that is driven by the engine and supplies the heat transfer medium to the heat exchanger. The passing air is heated or cooled by heat exchange with the heat transfer medium supplied to the heat exchanger and is blown into the vehicle interior of the vehicle so as to air-condition the vehicle interior. The vehicle occupant further has an operation means for enabling the temperature or air volume of the blown air to be set to a value required by the occupant;
Request control means for controlling the operation of the air conditioner so that the temperature or air volume of the blown air approaches the passenger's required value by the operation means during the automatic stop of the engine;
When there is a change operation of the temperature or air volume of the blown air by the operating means during the automatic stop of the engine and the engine is restarted by the idle stop control means after the change operation, the temperature or air volume of the blown air is changed. The air conditioner so as to approach a value between the occupant request value immediately before the engine automatic stop or a value between the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. And a change control means for changing the operation control of the vehicle. Idle stop control that automatically stops the engine when a predetermined engine stop condition is satisfied and automatically restarts the engine when the predetermined engine restart condition is satisfied after that A vehicle air-conditioning control device for controlling the operation of an air-conditioning device mounted on a vehicle comprising means,
The air conditioner includes a heat exchanger through which a heat transfer medium flows, and heat transfer medium supply means that is driven by the engine and supplies the heat transfer medium to the heat exchanger. The passing air is heated or cooled by heat exchange with the heat transfer medium supplied to the heat exchanger and is blown into the vehicle interior of the vehicle so as to air-condition the vehicle interior. The vehicle occupant further has an operation means for enabling the temperature or air volume of the blown air to be set to a value required by the occupant;
Request control means for controlling the operation of the air conditioner so that the temperature or air volume of the blown air approaches the passenger's required value by the operation means during the automatic stop of the engine;
When there is a change operation of the temperature or air volume of the blown air by the operating means during the automatic stop of the engine and the engine is restarted by the idle stop control means after the change operation, the temperature or air volume of the blown air is changed. The air conditioner so as to approach a value between the occupant request value immediately before the engine automatic stop or a value between the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. Change control means for changing the operation control of
The change control means includes the change operation after a specific period from the start of the engine automatic stop to a predetermined time during the automatic stop of the engine, and the engine is restarted by the idle stop control means after the change operation. In this case, the vehicle air conditioning control device is configured to change the operation control of the air conditioning device. Idle stop control that automatically stops the engine when a predetermined engine stop condition is satisfied and automatically restarts the engine when the predetermined engine restart condition is satisfied after that A vehicle air-conditioning control device for controlling the operation of an air-conditioning device mounted on a vehicle comprising means,
The air conditioner includes a heat exchanger through which a heat transfer medium flows, and heat transfer medium supply means that is driven by the engine and supplies the heat transfer medium to the heat exchanger. The passing air is heated or cooled by heat exchange with the heat transfer medium supplied to the heat exchanger and is blown into the vehicle interior of the vehicle so as to air-condition the vehicle interior. The vehicle occupant further has an operation means for enabling the temperature or air volume of the blown air to be set to a value required by the occupant;
Request control means for controlling the operation of the air conditioner so that the temperature or air volume of the blown air approaches the passenger's required value by the operation means during the automatic stop of the engine;
When there is a change operation of the temperature or air volume of the blown air by the operating means during the automatic stop of the engine and the engine is restarted by the idle stop control means after the change operation, the temperature or air volume of the blown air is changed. The air conditioner so as to approach a value between the occupant request value immediately before the engine automatic stop or a value between the occupant request value immediately before the engine restart and the occupant request value immediately before the engine automatic stop. Change control means for changing the operation control of
If the change operation is performed only during a specific period from the start of the engine automatic stop to a predetermined time during the automatic stop of the engine and the engine is restarted by the idle stop control means after the change operation, the change control means A vehicle air-conditioning control apparatus, further comprising a restricting means for restricting a change in operation control of the air-conditioning apparatus. In the vehicle air-conditioning control device according to any one of claims 1 to 3,
The air conditioner further includes display means provided in the passenger compartment for displaying a passenger's required value by the operation means,
When the engine is restarted, display change means for changing the display by the display means in response to the change by the change control means when the operation control of the air conditioner is changed by the change control means. An air conditioning control device for a vehicle, further comprising:

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