KR101063600B1 - Idle stop control method - Google Patents

Abstract

The present invention relates to an idle stop control method, wherein the I / stop is controlled by controlling the I / stop according to temperature conditions such as whether the vehicle is stopped for a long time, whether the air conditioner is operating, room temperature, outside air temperature, evaon and air conditioner setting temperature. When it affects the condition, I / stop can be prevented to prevent deterioration of the air conditioning condition.When the influence of I / stop on the air conditioning condition is deteriorated, the I / stop can be entered and the unnecessary engine of the engine is stopped when the vehicle is stopped. Idle can be removed.

I / stop, air conditioning, temperature, air conditioning

Description

Idle stop control method {CONTROL METHOD OF IDLE STOP}

The present invention relates to an idle stop control method, and more specifically, according to the air conditioning state of the vehicle, by controlling the I / stop to remove unnecessary engine idle, and at the same time can prevent the air condition worsened due to I / stop An idle stop control method.

In general, the hybrid vehicle may improve energy efficiency of the vehicle by eliminating energy consumption generated when the engine is idling with an idle stop (I / stop) that stops the engine when stopped.

When the engine is stopped due to the idle stop, such a hybrid vehicle can operate the electronic components such as air conditioners and lamps by the output voltage of the battery, and the output voltage of the battery is consumed by the electronic components to affect the power generation. In order to prevent giving the electronic components, the electronic components are kept ready for operation.

That is, in the air conditioner for controlling the air conditioning state of the vehicle, the compressor for inhaling or compressing the refrigerant gas is stopped together with the engine to be in a ready state. The air conditioner operates a blower for supplying air cooled through an evaporator, which is a cooling fin, to the vehicle interior for a reference time set immediately after the compressor stops, so that the blower is cooled through the cooled evaporator. It is possible to supply cold air to the interior of the vehicle during the reference time of operation. However, if the reference time passes after the idle stop, the blower operation is also stopped, and the air conditioning condition of the vehicle is rapidly deteriorated.

The present invention is to overcome the above-mentioned conventional problems, the object of the present invention is to control the I / stop in accordance with the temperature conditions of the vehicle, when the I / stop affects the air conditioning state by inhibiting the I / stop air conditioning It is to provide an idle stop control method that can prevent the condition from worsening.

In addition, another object of the present invention is to control the I / stop in accordance with the temperature conditions of the vehicle, when the impact of the I / stop to the air conditioning state is not enough to enter the I / stop when the vehicle is stopped when unnecessary idling of the engine It is to provide an idle stop control method that can be removed.

In order to achieve the above object, the idle stop control method according to the present invention includes a first control step of the controller prohibiting I / stop when the defrost switch is on, and an external air temperature and a room temperature sensor of the vehicle measured by the external air temperature sensor. If it is determined by the controller that the vehicle has been started after a long-term parking stop by evaluating the room temperature measured by the EVA sensor and the EVA sensor, the controller may control I / stop according to the operation of the air conditioner of the vehicle and the set temperature of the air conditioner. A second control step of inhibiting and a third control step of controlling the I / stop by the controller according to the temperature conditions of the vehicle such as the set-on temperature, the outside air temperature and the eva-on after the first control step and the second control step. It may include.

In the first control step, the third control step may be executed to release and prohibit I / stop when the defrost switch is on, and to control the I / stop according to the temperature condition of the vehicle when the defrost switch is off.

The second control step includes a long-term parking stop checking step of checking whether the vehicle is started after a long-term stop by the eva-on temperature measured by the outside temperature, the room temperature, and the eva temperature sensor, and the long-term stop by the vehicle. If it is confirmed that the start-up later, when the air conditioner is turned on in the controller, the air conditioner confirming step of checking whether or not the set temperature is a reference set temperature or less, the air conditioner is turned on, the set temperature is the reference set If it is less than or equal to the I / stop prohibition time check step and the I / stop prohibition time check step to determine whether the I / stop prohibition time has elapsed according to the temperature stored in the controller is satisfied May not include an I / stop prohibition holding step to prohibit an I / stop while not doing so.

In the long-term parking confirmation step, when the outside air temperature is 20 ° C. or more, the room temperature and the evaon are 30 ° C. or more, and the room temperature and the evaon are 5 ° C. or more higher than the outside temperature, the vehicle is parked for a long time. It can be started afterwards.

The third control step may include: a first condition checking step of confirming whether or not the I / stop inhibiting first condition in which the set temperature is less than the reference set temperature and the outside temperature is greater than or equal to the reference outside temperature when the air conditioner is on in the controller; A second whether the controller satisfies the I / stop inhibited second condition in which the Evaon is equal to or greater than the reference Evaon and the amount of solar radiation applied to the vehicle satisfies the I / stop inhibited second condition when the first condition is satisfied; A condition checking step and a first I / stop entry step of entering an I / stop when the vehicle stops is executed if the I / stop inhibiting first condition is not satisfied in the first condition checking step, and the second condition checking step is performed. If the I / stop prohibition second condition is not satisfied, the second I / stop entry step of entering the I / stop when the vehicle stops is executed, and the I / stop prohibition first condition and the I / stop prohibition second condition are executed. Only to everyone If may include I / stop operation determination step that execution I / stop prohibition step of prohibiting I / stop.

In the third control step, after the second I / stop entry step, when the solar radiation amount checking step for checking whether the solar radiation amount applied to the vehicle has risen above the reference solar radiation amount and the solar radiation amount rises above the reference solar radiation amount, An evaluating step for checking whether the evaon has risen above the reference evaon, and if the evaon has increased above the reference evaon, entering the second I / stop entry step I / stop It may further include an I / stop release step to release.

In the third control step, if the evaon has not risen above the reference evaon in the evaluating step, whether the blower operates after the I / stop entry in the second I / stop entry step has elapsed for a reference time. The method may further include an I / stop check step for checking.

After the first I / stop entry step, the I / stop prohibition step, and the I / stop release step, if the start of the vehicle is not finished by checking whether the vehicle is started, the start end to restart the first control step. It may further comprise a confirmation step.

Idle stop control method according to the present invention is to control the I / stop according to the temperature conditions of the vehicle, it is possible to prevent the deterioration of the air conditioning state by inhibiting the I / stop when the I / stop affects the air conditioning state .

In addition, the idle stop control method according to the present invention controls the I / stop in accordance with the temperature conditions of the vehicle, when the impact of the I / stop to the air conditioning condition is not enough when the vehicle is stopped by entering the I / stop Idle can be eliminated.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

1A to 1B, a flowchart illustrating an idle stop control method according to an embodiment of the present invention is shown.

As shown in FIGS. 1A to 1B, the idle stop control method includes a first control step SA, a second control step SB, a third control step SC, and a start end confirmation step SE. Here, A and B of FIG. 1A and A and B of FIG. 1B are respectively connected.

Before the first control step SA and the second control step SB, the start step S, which is a preparation step for controlling the idle stop (Idle stop, hereinafter “I / stop”) of the vehicle, is further performed. Run That is, when the vehicle is started in the start step S, the first control step SA and the second control step SB are executed for I / stop control.

After the start-up confirmation step SE, an end step E for terminating I / stop control is further executed.

First, in the first control step SA, the controller controls the I / stop depending on whether the defrost (“D / F”) switch is operated to remove moisture or frost in the window of the vehicle. In addition, whether the D / F switch is turned on or off may be determined through a signal change applied to a full auto temperature controller (Fatc) which is an air conditioning controller electrically connected to the D / F switch.

In addition, the FATC is electrically connected to a hybrid control unit (HCU) that is an integrated controller, and transmits the operation of the D / F switch to the HCU, the HCU determines whether I / stop and control the operation of each component In order to transmit the control signal for controlling the operation to the controller for controlling the operation of each component. For example, the HCU is electrically connected to the ECU (Engine Control Unit), a controller that controls the operation of the engine.When I / stop enters, the HCU stops the operation of the engine and the compressor of the air conditioner through the ECU. After the elapse of time, the blower can be stopped via FATC.

Hereinafter, the controller includes both controllers electrically connected to each component of the vehicle to check and control the operation of each component, and an integrated controller for controlling the operation of each controller.

The first control step (SA) includes a D / F switch on confirmation step (SA1) for determining whether the D / F switch is on, an I / stop release and prohibition step (SA2) for inhibiting I / stop, and D D / F switch off confirmation step SA3 for determining whether the / F switch is off.

First, the D / F switch on confirmation step SA1 checks whether the D / F switch is turned on through a controller.

When the D / F switch is off in the D / F switch-on confirmation step SA1, the third control step SC is executed to control the I / stop according to the temperature condition.

In addition, when the D / F switch is turned on in the D / F switch-on checking step SA1, the air conditioning system of the vehicle is also stopped due to the engine stopping, so that the engine does not stop to maintain the operation of the air conditioning system for securing visibility during vehicle operation. The I / stop release and prohibit step SA2 is executed to prohibit the I / stop.

That is, in the I / stop release and prohibition step (SA2), when the vehicle stops in the I / stop entry state in which the engine stops when the vehicle stops, the I / stop is released so that the engine does not stop even when the vehicle is stopped. Forbid.

After the I / stop release and prohibition step SA2, the D / F switch off confirmation step SA3 is executed to confirm whether the D / F switch is kept on or off.

If the D / F switch is kept on in the D / F switch-off confirmation step SA3, the I / stop release and prohibition step SA2 is executed to maintain the I / stop in a prohibited state. When the F switch is changed to the off state, the third control step SC is executed to control the I / stop according to the temperature condition.

In the second control step SB, the outside air temperature of the vehicle measured by the outside air temperature sensor for sensing the outside temperature of the vehicle, the room temperature and the evaporator measured by the room temperature sensor for sensing the indoor temperature of the vehicle If the controller determines that the vehicle has been started after a long-term stop by the Evaon measured by the EVA sensor for sensing the temperature of the controller, the controller controls the I / stop according to the operation of the vehicle's air conditioner and the air conditioner setting temperature. .

The second control step SB includes a long-term parking stop checking step SB1, an air conditioning checking step SB2, an I / stop prohibition time checking step SB3, and an I / stop prohibition holding step SB4.

First, in the long-term parking confirmation step (SB1), the controller determines whether the engine is started after the long-term parking of the vehicle, according to the temperature conditions of the outside temperature and the room temperature of the vehicle.

In the long-term parking confirmation step (SB1), when the outside air temperature of the vehicle is 20 ° C. or more, the room temperature and the Evaon temperature are 30 ° C. or more, and the room temperature and the Evaon temperature are higher than 5 ° C., the vehicle is applied as a closed vehicle. Due to the radiant heat, the room temperature and evasion of the vehicle increased more than the outside temperature, and it was determined that the vehicle was started after the vehicle was parked or stopped for a long time.

If the vehicle is not parked for a long time in the long-term parking confirmation step (SB1), a third control step (SC) is executed to control the I / stop according to the change of temperature conditions such as indoor, eva, and outside temperature of the vehicle. do.

After the vehicle is stopped for a long time in the long term parking confirmation step SB1, the air conditioner checking step SB2 is performed to check whether the air conditioner is operating.

That is, in the air condition confirmation step (SB2), the controller checks whether the air conditioner is turned on, and if the air conditioner is turned on, determines whether the set temperature of the air conditioner is equal to or less than the reference set temperature. The set temperature is a set temperature of the air conditioner set to lower the room temperature of the vehicle when the air conditioner is turned on. And the reference set temperature is set to a reference temperature for preventing the air conditioner is stopped due to I / stop, in order to lower the room temperature of 30 ° C or more increased during parking, preferably set to 25 ℃, in the present invention It is not limited.

When the set temperature exceeds the reference set temperature in the air condition checking step SB2, in order to control the I / stop according to the change of the temperature conditions such as the indoor, the eva, and the outside temperature of the vehicle, the third control step (SC) is performed. ) Is executed.

When the set temperature is less than the reference set temperature in the air condition checking step (SB2), in order to prevent the operation of the air conditioner due to the I / stop entry to prevent the indoor temperature of the vehicle from cooling to the set temperature, the prohibition holding time In order to prohibit I / stop, the I / stop prohibition time checking step SB3 is executed.

That is, in the I / stop prohibition time checking step (SB3), when the air conditioner is operated to reduce the increased indoor room temperature and eva-on below the reference set temperature due to the radiant heat applied to the vehicle by the long-term stop, In order to prohibit the I / stop for a predetermined time, it is determined whether the I / stop prohibition time has elapsed according to the temperature stored in the controller. The temperature may be a setting temperature of the outside air and the air conditioner, and the prohibition time setting according to the setting temperature of the outside air and the air conditioner may be set as shown in FIG. 2. For example, when the outside air temperature is 28 ° C., if the set temperature of the air conditioner is 23 ° C., the prohibition time may be set to approximately 300 seconds.

If the I / stop prohibition time has not elapsed in the I / stop prohibition time checking step SB3, an I / stop prohibition holding step SB4 for maintaining the I / stop prohibition state is executed. That is, in the I / stop prohibition holding step (SB4), the air conditioner is deteriorated by preventing the air conditioner from being stopped by the I / stop by inhibiting the I / stop for the time set in the I / stop prohibition time checking step (SB3). Can be prevented.

After the prohibition holding time for prohibiting the I / stop in the I / stop prohibition time checking step (SB3) has elapsed, it is necessary to control the I / stop according to the change of the temperature conditions such as the indoor, the eva, and the outside temperature of the vehicle. Three control steps SC are executed.

In the third control step SC, after the first control step SA and the second control step SB, the controller controls the I / stop according to temperature conditions of the vehicle such as air conditioner setting temperature, outside air temperature, and evaon. .

The third control step SC includes the first condition checking step SC1, the second condition checking step SC2, the I / stop operation determining step SC3, the Evaon checking step SC5, and the solar radiation checking step SC4. ), An I / stop confirmation step SC6, an I / stop release step SC7, a first I / stop entry hold step SC8, and a second I / stop entry hold step SC9. The I / stop operation determination step SC3 includes the first I / stop entry step SC31, the second I / stop entry step SC33, and the I / stop prohibiting I / stop when the vehicle stops. A stop prohibition step SC32 is included. Hereinafter, each step included in the third control step SC will be described in detail.

First, in the first condition checking step SC1, when the air conditioner is turned on, the controller checks whether the set temperature is less than the reference set temperature and the outside temperature satisfies the I / stop prohibited first condition. The reference outside air temperature may be set to 30 ° C., which is the lowest temperature that starts to increase by affecting the room temperature of the vehicle, but the present invention is not limited thereto.

In the first condition checking step SC1, when the air conditioner is turned off, or when the air conditioner is turned on, when the set temperature is set above the reference set temperature or when the outside air temperature of the vehicle is lower than the standard outside temperature, the I / stop prohibited first condition. Since the vehicle is not satisfied, the first I / stop entry step SC31 for entering the I / stop when the vehicle is stopped is performed to prevent the engine from idling and increase fuel economy.

When the air conditioner is turned on in the first condition checking step SC1, the set temperature is set to be lower than the reference set temperature, and when the outside air temperature of the vehicle is higher than the standard outside temperature, the I / stop prohibited first condition is satisfied. A second condition check step SC2 is executed to determine whether / stop prohibition second condition is satisfied.

In the second condition check step SC2, the controller checks whether Evaon is equal to or greater than the reference Evaon, and whether the amount of insolation applied to the vehicle satisfies the I / stop prohibited second condition, which is higher than the reference insolation. That is, the second condition of the I / stop prohibition is that the amount of insolation applied to the vehicle measured by the insolation sensor is greater than or equal to the reference insolation, and it is not possible to reduce or maintain the room temperature to be equal to the set temperature because the evaon becomes greater than or equal to the reference inversion. When satisfied.

The reference EVA is the best EVA temperature for lowering or maintaining the indoor temperature of the vehicle at the set temperature, and preferably, the reference EVA is set to be the same as the reference set temperature, but is not limited thereto. In addition, the reference solar radiation amount may be set to the lowest solar radiation amount that starts to increase the room temperature of the vehicle due to the amount of solar radiation applied to the vehicle, but is not limited thereto.

In addition, if the second condition check step SC2 satisfies the I / stop prohibited second condition, the indoor temperature of the vehicle is continuously increased due to the outside air temperature and the amount of insolation of the vehicle, so that the air conditioner stops at I / stop. An I / stop inhibit step (SC32) is executed to inhibit / stop.

In the second condition check step SC2, if the Evaon is less than the standard Evaon or the solar radiation is less than the standard insolation, the vehicle does not satisfy the I / stop prohibited second condition. A second I / stop entry step SC33 for entering I / stop when the vehicle stops is performed.

After the second I / stop entry step SC33, the solar radiation checking step SC4 is executed to release the I / stop or maintain the I / stop depending on whether the solar radiation and the temperature of the EVA have increased.

That is, in the solar radiation confirmation step SC4, the solar radiation amount is higher than that measured in the second condition confirmation step SC2, and it is confirmed whether the solar radiation amount is increased by more than the reference solar radiation amount.

When the solar radiation amount rises above the reference solar radiation amount in the solar radiation check step SC4, the controller rises higher than that measured by the second condition check step SC2, and the controller determines whether or not the solar radiation rises above the reference Evaon temperature. In order to confirm, the Evaon confirmation step SC5 is executed.

In the case where the evaon rises above the reference evaon in the evaluating step (SC5), since the insolation amount rises above the reference insolation amount in the solar irradiation check step (SC4), the second condition for prohibiting the I / stop is satisfied and the second I An I / stop release step SC7 for releasing the I / stop entered in the / stop entry step SC33 is executed.

In addition, if Evaon does not rise above the reference Evaon in the Evaon checking step SC5, the first I / stop entry maintaining step for maintaining the I / stop entry state entered in the second I / stop entry step SC33. (SC8) is executed. In addition, the first I / stop entry maintaining step SC8 is maintained in the I / stop entry state until Evaon rises above the reference Evaon, so that after the first I / stop entry maintaining step SC8, Eva is performed. The ON confirmation step SC5 is executed again.

When the solar radiation amount does not rise above the reference solar radiation amount in the solar radiation check step SC4, it is determined that Evaon is kept below the standard Evaon, which is the state measured when the second condition check step SC2 is performed. The controller executes the I / stop check step SC6 to check whether the blower has elapsed by a reference time after the I / stop enters the second I / stop entry step SC33.

When the vehicle enters I / stop in the second I / stop entry step (SC33), the air conditioning system also stops operation, but the blower maintains operation for a reference time to prevent the room temperature from dropping sharply. During the reference time period maintained, the room temperature can be cooled to the Evaon through a blower if the Evaon is below the Reference Evaon. That is, even when the vehicle enters the I / stop, the room temperature can be cooled to an evalon lower than the reference evasion through the blower operating during the reference time.

Therefore, in the I / stop confirming step SC6, after the I / stop is entered in the second I / stop entry step SC33, it is determined whether the reference time for which the blower operation is maintained has elapsed, and the I / stop during the reference time. Keep stop. The reference time may be set equal to the time at which the operation of the blower is maintained after the I / stop entry.

In addition, if it is determined that the reference time has elapsed after entering I / stop in the second I / stop entry step SC33 in the I / stop check step SC6, the blower is also stopped to prevent the room temperature from dropping sharply. In order to release the I / stop entered in the second I / stop entry step SC33, an I / stop release step SC7 is executed.

In addition, in the I / stop check step SC6, if the reference time has not elapsed after the I / stop entry, the second I / stop for maintaining the I / stop entry state entered in the second I / stop entry step SC33. A stop entry and hold step SC9 is executed. The second I / stop entry maintaining step SC9 is continuously maintained in the I / stop entry state until the reference time elapses after the I / stop entry in the second I / stop entry step SC33 is performed. After the / stop entry hold step SC9, the I / stop check step SC6 is executed again.

The first I / stop entry step sc31, the I / stop prohibition step SC32, the I / stop release step SC7, the first I / stop entry step SC8 and the second I / stop entry step SC9 After), a start end checking step SE for checking whether the start of the vehicle is finished is executed.

If the start of the vehicle is finished in the start end check step SE, an end step E for terminating I / stop control is executed. In addition, if the start of the vehicle is not terminated in the start end check step SE, the first control step SA is re-executed for I / stop control. That is, when the vehicle is started, the first control step SA for confirming the operation of the defrost switch and the second control step SB for checking whether the vehicle is stopped for a long time are executed. In this case, the second control step SB is executed, and when the defrost switch is turned off, the third control step SC is executed. Therefore, after the vehicle is started, the second control step SB and the third control step SC are repeatedly executed.

In the idle stop control method of the present invention, the I / stop is controlled according to temperature conditions such as whether the vehicle is stopped for a long time, whether the air conditioner is operating, room temperature, outdoor temperature, evaon and air conditioner setting temperature, and so on. When it affects, I / Stop can be prevented to prevent deterioration of air-conditioning condition.If I / Stop has little effect on air conditioning, I / S can enter and stop unnecessary engine idling when the vehicle is stopped. Can be removed

In other words, according to the air conditioning state of the vehicle, it is possible to control the I / stop to remove unnecessary engine idle, and at the same time prevent the air condition deteriorates due to the I / stop.

What has been described above is only one embodiment for implementing the idle stop control method according to the present invention, and the present invention is not limited to the above-described embodiment, and as claimed in the following claims, the gist of the present invention Without departing from the technical spirit of the present invention to the extent that any person of ordinary skill in the art to which the present invention pertains various modifications can be made.

1A and 1B are flowcharts illustrating an idle stop control method according to an exemplary embodiment of the present invention.

Figure 2 is an example of the graph of the I / stop prohibition holding time according to the set temperature and the outside temperature in the I / stop prohibition time confirmation step of Figure 1a is shown.

<Description of Symbols for Main Parts of Drawings>

SA; First control step SA1; D / F Switch-On Verification Step

SA2; I / stop release and prohibition step SA3; D / F switch off confirmation step

SB; Second control step SB1; Long-term parking confirmation step

SB2; Air condition check step SB3; I / stop prohibition time confirmation step

SB4; I / stop inhibited maintenance step SC; Third control step

SC1; First condition checking step SC2; Second condition check step

SC3; I / stop operation decision step SC5; Evaon Verification Step

SC4; Solar radiation checking step SC6; I / stop check step

SC7; I / stop release step SC8; 1I / stop entry hold step

SC9; Second I / stop entry hold step SE; Startup shutdown confirmation step

Claims (8)

A first control step of the controller prohibiting I / stop when the defrost switch is on; Operation of the air conditioner of the vehicle when it is determined by the controller that the vehicle is started after a long-term stop by the vehicle's outside temperature measured by the outside temperature sensor, the room temperature measured by the room temperature sensor, and the Evaon measured by the EVA sensor. And a second control step of the controller prohibiting I / stop according to the setting temperature of the air conditioner. And And a third control step of controlling the I / stop by the controller after the first control step and the second control step according to temperature conditions of the vehicle such as the set-on temperature, the outside air temperature, and the eva-on temperature. Idle stop control method. The method according to claim 1, The third control step is executed to release and prohibit I / stop when the defrost switch is on in the first control step, and to control the I / stop according to the temperature condition of the vehicle when the defrost switch is off. Idle stop control method. The method according to claim 1, The second control step A long-term parking stop checking step of checking, by the controller, whether the vehicle is started after a long-term parking stop by means of the evacuation temperature measured at the outside temperature, the room temperature, and the eva temperature sensor;  An air conditioner checking step of confirming whether or not the set temperature is equal to or less than a reference set temperature when the air conditioner is turned on in the controller when it is confirmed that the vehicle is started after a long time stop; An I / stop prohibition time checking step for determining whether an I / stop prohibition time has elapsed according to a temperature stored in the controller when the air conditioner is turned on and the set temperature is less than the reference set temperature; And And an I / stop prohibition holding step for prohibiting the I / stop while not satisfying the I / stop prohibition time in the I / stop prohibition time checking step. The method of claim 3, In the long-term parking confirmation step, when the outside air temperature is 20 ° C. or more, the room temperature and the evaon are 30 ° C. or more, and the room temperature and the evaon are 5 ° C. or more higher than the outside temperature, the vehicle is parked for a long time. The idle stop control method characterized in that it is determined that it is started after. The method according to claim 1, The third control step A first condition checking step of checking whether the controller satisfies an I / stop inhibiting first condition in which the set temperature is less than the reference set temperature and the outside temperature is greater than or equal to the reference outside temperature when the air conditioner is on; A second whether the controller satisfies the I / stop inhibited second condition in which the Evaon is equal to or greater than the reference Evaon and the amount of solar radiation applied to the vehicle satisfies the I / stop inhibited second condition when the first condition is satisfied; Condition checking step; If the I / stop prohibition first condition is not satisfied in the first condition check step, the first I / stop entry step of entering the I / stop when the vehicle stops is executed, and the I / stop is prohibited in the second condition check step. If the second condition is not satisfied, the second I / stop entry step of entering the I / stop when the vehicle stops is executed, and if both the I / stop prohibited first condition and the I / stop prohibited second condition are satisfied, I An idle stop control method comprising an I / stop operation determination step of executing an I / stop prohibition step of prohibiting / stop. The method according to claim 5, The third control step  An insolation amount checking step for confirming whether or not the insolation amount applied to the vehicle has risen above the reference insolation amount after the second I / stop entry step; And An evaluating step for confirming whether the evaluating amount rises above the reference evaluating amount when the solar irradiation amount rises above the reference irradiation amount; And an I / stop releasing step of releasing the I / stop entry entered in the second I / stop entry step if the evaon has increased above the reference evaon. The method according to claim 6, The third control step If the evaon in the evaluating step does not rise above the reference evaon, I / stop to check whether the blower is operated by the reference time after the I / stop in the second I / stop entry step has elapsed Idle stop control method characterized in that it further comprises a confirmation step. The method according to claim 6, After the first I / stop entry step, the I / stop prohibition step and the I / stop release step And a start end checking step of checking whether the vehicle is started and not starting the vehicle, so that the first control step is executed again.

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