JP2012127315A - Control device of idle stop vehicle - Google Patents

Abstract

A control device for an idle stop vehicle that is advantageous in realizing an idle stop operation that accurately reflects the driver's intention is provided.
When an idle stop-off switch 8 is pressed, the idle stop function is prohibited, and after a predetermined prohibition period has elapsed, the idle stop function automatically returns to an operable state. In the state where the idle stop function is restored, the idle stop function operates if the automatic stop condition is satisfied. The prohibition of the idle stop function is continued and canceled by pressing the idle stop off switch 8 for a predetermined period or more and the number of times. Therefore, the idle stop function can be temporarily prohibited by a simple operation such as operating the idle stop off switch 8, or the prohibition can be continued, thereby realizing an idle stop operation that accurately reflects the driver's intention. This is advantageous.
[Selection] Figure 2

Description

  The present invention relates to a control device for an idle stop vehicle that automatically stops an engine during idling.

2. Description of the Related Art Conventionally, an idle stop start vehicle (hereinafter referred to as an idle control vehicle) has been developed and put into practical use in which when a predetermined condition is satisfied while a vehicle is stopped, the operation of the engine is stopped to improve fuel consumption and exhaust gas emission.
Among such idle control vehicles, a vehicle equipped with a manual transmission (MT) is generally based on various types of vehicle information including driver clutch operation information, transmission shift operation information, accelerator operation information, and vehicle speed information. Thus, the driver's intention to stop or start is determined, and the engine is automatically stopped or restarted.
In this case, if the engine is automatically stopped and the driver has an intention to restart the engine as soon as possible, operating the clutch will automatically restart the engine and reflect the driver's intention. Can do.

On the other hand, in an AT / CVT vehicle (automatic transmission vehicle), the engine is automatically stopped and restarted based on the brake pedal operation.
In this case, if the driver wants to restart the engine as soon as possible with the engine automatically stopped, the operation of the brake pedal may be released, but the vehicle moves with the restart of the engine. In a situation where the user is waiting for a right turn at the intersection, such an operation cannot be performed, which is disadvantageous in reflecting the driver's intention.
In view of this, there has been proposed a control device for an idle stop vehicle in which the driver can variably set the time from when the condition of the idle stop mode is established until the engine is stopped (see Patent Document 1).
According to this technique, if the time until the engine is stopped is set long, frequent automatic engine stop can be suppressed. For example, the engine is not stopped in a situation where the vehicle is waiting for a right turn at the above-mentioned intersection. The driver's intention can be reflected to some extent.

JP 2001-336434 A

However, the above-described conventional technology merely allows the driver to variably set the time until the engine is stopped after the condition of the idle stop mode is satisfied, and reflects the driver's intention. There is room for improvement in realizing the idle stop operation.
The present invention has been made in view of such circumstances, and an object thereof is to provide an idle stop vehicle control device that is advantageous in realizing an idle stop operation that accurately reflects the driver's intention. To do.

  In order to achieve the above-described object, a control device for an idle stop vehicle according to the present invention is a control device for an idle stop vehicle having an idle stop function for automatically stopping the engine when an automatic stop condition is satisfied during operation of the engine. And a prohibiting means for prohibiting the idle stop function, and a releasing means for canceling the prohibition of the idle stop function when a predetermined period has elapsed since the prohibition means prohibiting the idle stop function. Features.

  According to the present invention, since the idle stop function is prohibited by the prohibiting means and the release means for canceling the prohibition of the idle stop function is provided after a predetermined period of time has elapsed, the idle stop function is operated by operating the prohibiting means. Even if the prohibition is prohibited, the prohibition of the idle stop function is canceled by the releasing means after the lapse of a predetermined prohibition period, which is advantageous in realizing an idle stop operation that accurately reflects the driver's intention. .

1 is a block diagram illustrating a control device for an idle stop vehicle including a configuration of an electric system around an engine according to a first embodiment of the present invention. It is a flowchart which shows operation | movement when the idle stop-off switch is pressed down in the control apparatus of the idle stop vehicle which is the 1st Embodiment of this invention. It is a flowchart which shows operation | movement when an idle stop-off switch is pressed down in the control apparatus of the idle stop vehicle which is the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement when an idle stop-off switch is pressed down in the control apparatus of the idle stop vehicle which is the 3rd Embodiment of this invention.

(First embodiment)
FIG. 1 is a block diagram showing a control device for an idle stop vehicle including a configuration of an electric system around an engine according to a first embodiment of the present invention.
The control apparatus for the idle stop vehicle includes an ECU 6 that is a microcomputer that controls each part including the engine 1 of the automobile.
The ECU 6 includes a CPU, a ROM that stores and stores a control program, a RAM as an operation area of the control program, an interface unit that interfaces with peripheral circuits and the like. The ECU 6 functions as an engine automatic stop means 61, an engine restart means 62, and an idle stop-off control means 63 for realizing an idle stop control system by executing the control program.
In this embodiment, the control program includes a main program corresponding to the engine automatic stop means 61 and the engine restart means 62 and an interrupt processing program corresponding to the idle stop-off control means 63.
The engine restart unit 62 includes a normal auto start unit 71 and a forced auto start unit 72.
An automatic stop condition is set in the engine automatic stop means 61. A normal engine restart condition is set in the normal auto start means 71, and a forced engine restart condition is set in the forced auto start means 72.
When the ECU 6 executes a main program that constitutes the engine automatic stop means 61 and the engine restart means 62 in the control program, the engine is stopped by the engine automatic stop means 61 when the automatic stop condition is satisfied. When the normal engine restart condition or the forced engine restart condition is satisfied, the engine is restarted by the engine restart means 62.
The engine automatic stop means 61 and the engine restart means 62 are an ignition key sensor, a first clutch switch, a second clutch switch, a brake vacuum sensor, an engine hood switch, a neutral position sensor, a current sensor, a battery temperature sensor, and an engine water temperature sensor. An engine stop control signal and an engine restart control signal are set on the basis of various vehicle information detected by various detectors including the engine stop control signal and the engine restart control signal to the fuel injection control means and the starter motor 3. Is output.

In this embodiment, an idle stop-off switch 8 is connected to an interrupt request signal input terminal of the ECU 6.
The idle stop-off switch 8 is constituted by a momentary switch that, for example, switches the contact from the open state to the closed state when pressed, and returns from the closed state to the original open state when the pressing operation is canceled.
When the idle stop-off switch 8 is pressed by the driver, an interrupt request signal is output from the idle stop-off switch 8 to the interrupt request signal input terminal of the ECU 6.
In this embodiment, the idle stop-off switch 8 is a momentary-type switch, and switches from the first state to the second state when a pressing operation is performed, and from the second state when the pressing operation is released. Return to the first state.
In this embodiment, the idle stop-off control means 63 is stored in the memory as an interrupt processing program that is executed by outputting an interrupt request signal to the interrupt request signal input terminal, and the idle stop-off switch 8 is operated. Thus, the operation shown in the flowchart of FIG. 2 is realized.
The idle stop-off control unit 63 includes a prohibition unit 76 that prohibits the idle stop function, and a release unit that cancels the prohibition of the idle stop function when a predetermined period has elapsed after the prohibition unit 76 prohibits the idle stop function. 77. The prohibiting means 76 has an idle stop-off switch 8 that prohibits the idle stop function, and the idle stop function is prohibited by pressing the idle stop-off switch 8.

Furthermore, in this idle stop vehicle control device, the ECU 6 transmits and receives CAN communication information to and from other ECUs via a CAN (Controller Area Network) communication system.
This CAN communication information includes, for example, front and left wheel speed information for vehicle speed calculation, an idle stop non-permission signal for detecting an idle stop prohibition request, a seed belt reminder signal for detecting a driver seat belt non-installation, an idle stop control system Various output signals transmitted from the ECU 6 in relation to the control are included.

The alternator 2 is configured to interlock with the crankshaft of the engine 1 via a belt and a pulley, and is directly rotated by the engine 1 to generate electric power.
The starter motor 3 is a motor that rotates the engine from the outside when starting the engine.
The in-vehicle battery 4 stores the electric power generated by the alternator 2.
The vehicle-mounted device 5 is an electric device that is driven by being supplied with power from the in-vehicle battery 4, and includes, for example, a car air conditioner, a car stereo, an interior lighting device, and a navigation device.
The current sensor 7 is a sensor that detects the charge / discharge current of the in-vehicle battery 4.

FIG. 2 is a flowchart showing an operation when the idle stop-off switch 8 is pushed down in the control device for the idle stop vehicle of this embodiment.
The operation of the control device for the idle stop vehicle according to this embodiment will be described below with reference to the flowchart shown in FIG.
In the control apparatus for the idle stop vehicle of this embodiment, when the idle stop off switch 8 is not depressed, the engine automatic stop means 61 determines whether or not the automatic stop condition set according to the main program is satisfied. When it is established, the engine is stopped.
The same applies to the case of restart, and the normal auto start means 71 restarts the engine when the set normal engine restart condition is satisfied. The forced auto start means 72 restarts the engine when the set forced engine restart condition is satisfied.
Usually, there are times when the vehicle stops for a short time when it turns right or left because it waits for a signal, waits for an oncoming vehicle or the like. However, in the case of a stop by waiting for such a signal or waiting for an oncoming vehicle, it may not be desired to operate the idle stop depending on the situation. In such a case, in this embodiment, the driver depresses the idle stop-off switch 8 for a short time.

When the vehicle stops at the intersection because of waiting for a signal or waiting for an oncoming vehicle, the ECU 6 normally determines whether or not the automatic stop condition set in the engine automatic stop means 61 is satisfied according to the main program. At this time, the driver stops the vehicle for waiting for a short time signal or waiting for the oncoming vehicle, and when he / she decides not to operate the idle stop, the driver presses the idle stop off switch 8 for a short time.
When the idle stop-off switch 8 is pressed, an interrupt request signal is output from the idle stop-off switch 8 to the interrupt request signal input terminal of the ECU 6. When the interrupt request signal is input to the interrupt request signal input terminal, the ECU 6 satisfies the normal operation according to the main program that has been executed so far, for example, the automatic stop condition set in the engine automatic stop means 61 is satisfied. 2 is interrupted, and the interrupt processing program shown in FIG. 2 stored in advance in the ECU 6 is executed.
When the idle stop-off switch 8 is pressed, a time up time t1 of, for example, 10 seconds is set in the timer, and the timer is started (step S1). Next, the automatic stop condition set in the engine automatic stop means 61 is not satisfied, so that the automatic stop is disabled and the idle stop function is turned off, that is, the idle stop function is prohibited (step S2).

Here, the operation of step S2 for disabling the automatic stop condition will be described. For example, various vehicle information detected by various detectors including an ignition key sensor, a first clutch switch, a second clutch switch, a brake vacuum sensor, an engine hood switch, a neutral position sensor, a current sensor, a battery temperature sensor, and an engine water temperature sensor. When the automatic stop condition is determined, the engine stop control signal is set, and the engine stop control signal is output to the fuel injection control means or the starter motor 3, the timer that is started in step S1 together with these various vehicle information A state, for example, a state in which the timer is reset, is added to the automatic stop condition. In such a configuration, when the timer is started in step S1, it is determined that the automatic stop condition is not satisfied because the timer is not reset during the time t1 from when the timer is started to when the timer expires. Therefore, the idle stop function is turned off.
The timer is reset in step S4 when the interrupt processing program shown in FIG. 2 is skipped. Therefore, while the ECU 6 is executing the main program, various timer information is detected by the various detectors. Based on this, the automatic stop condition is determined.

In subsequent step S3, it is further determined whether or not a time t1 until the timer started in step S1 expires has elapsed. As a result, if it is determined that the time t1 has not elapsed, the process returns to step S2, maintains the state where the idle stop function is turned off, and determines again whether the time t1 has elapsed in step S3. When the time t1 has elapsed, the process proceeds to step S4 to reset the timer. As a result, when the time t1 has elapsed, the process proceeds to step S5, where the idle stop function in the off state is returned to the operable state, that is, the prohibition of the idle stop function is canceled, and the process returns to the main program. As a result, the idle stop function operates when the self-stop condition is satisfied.
In other words, the idle stop-off control means 63 prohibits the idle stop function during a predetermined prohibition period when the idle stop-off switch 8 switches to the second state, and prohibits the idle stop function when the prohibition period elapses. Idle stop-off operation is performed to release

  When the interrupt program shown in FIG. 2 is executed, the ECU 6 returns to the main program in a state immediately before the interrupt request signal is output. As a result, when the idle stop-off switch 8 is pressed at the intersection, even if the vehicle stops in the intersection, the idle stop-off switch 8 is pressed for 10 seconds (time-up time t1 set in the timer in step S1). If the vehicle is restarted within the intersection, the idle stop function of the vehicle does not operate within the intersection, and the engine is idling and the vehicle can quickly restart within the intersection. For this reason, it is possible to achieve a match between the current situation of the vehicle and the driver's intention that the idle stop is not performed in a situation where the idle stop is not necessary.

  In the above description, step S2 corresponds to the prohibiting means 76, and steps S3, S4, and S5 correspond to the releasing means 77.

  As described above, according to this embodiment, when the idle stop-off switch 8 is pressed, the idle stop function is turned off, and the idle stop function in the off state is operable after a predetermined period. When the automatic stop condition is satisfied, the idle stop function is activated. Accordingly, the idle stop function can be temporarily prohibited by a simple operation such as operating the idle stop off switch 8, which is advantageous in realizing an idle stop operation that accurately reflects the driver's intention. .

(Second Embodiment)
Next, a second embodiment will be described.
Also in this embodiment, FIG. 1 is used as a block diagram showing a control device for an idle stop vehicle including a configuration of an electric system around the engine. The description of each part shown in FIG. 1 is the same as that of the first embodiment, and therefore the description of the part described in the first embodiment is omitted.
In this embodiment, the idle stop-off control unit 63 further includes a prohibition continuation setting unit 78. The prohibition continuation setting unit 78 performs a setting for continuing prohibition of the idle stop function by the prohibition unit 76 regardless of a release command by the release unit 77. Also in this embodiment, the prohibiting means 76 has the idle stop-off switch 8 that prohibits the idle stop function, and the idle stop function is prohibited by pressing the idle stop-off switch 8 for a predetermined time or more. The prohibition continuation setting unit 78 is also configured to continue setting.
Also in this embodiment, when the idle stop-off switch 8 is pressed by the driver, an interrupt request signal is output from the idle stop-off switch 8 to the interrupt request signal input terminal of the ECU 6. .
Further, in this embodiment, the idle stop-off control means 63 is an operation for detecting whether or not the period during which the idle stop-off switch 8 is being pressed is maintained for a period exceeding 2 seconds, for example. Period detection means 81 is provided. In order to detect the state of the idle stop-off switch 8 by the operation period detection means 81, the idle stop-off switch 8 is also connected to a predetermined input port IN.
The idle stop-off control means 63 is stored in the memory as an interrupt processing program that is executed when an interrupt request signal is output to the interrupt request signal input terminal, and when the idle stop-off switch 8 is operated, FIG. The operation shown in the flowchart is realized.

FIG. 3 is a flowchart showing the operation when the idle stop-off switch 8 is operated in the control apparatus for the idle stop vehicle of this embodiment.
The operation of the control apparatus for the idle stop vehicle according to this embodiment will be described below with reference to the flowchart shown in FIG.
When the idle stop-off switch 8 is not operated, the engine automatic stop means 61 stops the engine when a set automatic stop condition is satisfied.
Further, the normal auto start means 71 restarts the engine when the set normal engine restart condition is satisfied. The forced auto start means 72 restarts the engine when the set forced engine restart condition is satisfied.
In this embodiment, when the vehicle is stopped by waiting for a signal or waiting for an oncoming vehicle, depending on the situation, it may not be desired to operate the idle stop. However, in such a situation, the driver sets the idle stop off switch 8 short. Press for a time. Further, the idle stop function is kept in a state where the idle stop function is prohibited by pressing and holding the idle stop off switch 8 once. Return to an operable state.

  When the idle stop-off switch 8 is pressed, the operation period detecting means 81 of the idle stop-off control means 63 first determines whether or not the pressing operation of the idle stop-off switch 8 is a long-pressing operation for 2 seconds or more, for example. (Step S11). Specifically, for example, the counter is started based on an input signal to the predetermined input port IN when the idle stop-off switch 8 is pressed, and the count value of the counter is incremented by 1 (processing 1). Subsequently, it is determined whether or not the pressed state of the idle stop-off switch 8 is released (process 2). If the pressed state of the idle stop-off switch 8 is not released, the idle stop-off switch 8 is pressed. Whether or not the period T during which the idle stop-off switch 8 is pressed does not exceed 2 seconds (step 3). Then, the process 1, the process 2 and the process 3 are repeated until the state where the idle stop-off switch 8 is pressed is released or the period T during which the idle stop-off switch 8 is pressed exceeds 2 seconds. Whether or not the period T during which the idle stop-off switch 8 is pressed in the process 3 exceeds 2 seconds is determined based on the count value of the counter and each instruction related to the loop of the process 1, the process 2 and the process 3 Can be determined based on the number of clocks and the period of the reference clock signal.

  As a result, if it is determined that the pressing operation of the idle stop-off switch 8 is not a long pressing operation for 2 seconds or more, that is, a short pressing operation, the process proceeds to step S20. In step S20, it is determined whether or not the counter value of the idle stop-off switch on counter is “1”. At this time, if the counter value of the idle stop-off switch on counter is “1”, that is, if the idle stop-off switch 8 is pressed once and the idle stop is prohibited, the state immediately before the transition to the interrupt processing is performed. Returning to the execution processing of the main program, the short press operation is ignored and the idle stop prohibited state is maintained. On the other hand, when the counter value of the idle stop-off switch on counter is “0” in step S20, that is, when it is determined that it is not “1”, the process proceeds to step S15.

  When it is determined in step S20 that the counter value of the idle stop-off switch on counter is not “1”, the counter value of the idle stop-off switch on counter is “0”, that is, the idle stop-off switch 8 is 2 This is a state in which the idle stop function is restored after a long press operation.

In step S15, time t1 is set in the timer, and the timer is started. In the subsequent step S16, the idle stop function is prohibited, and it is further determined whether or not the time-up time t1 set in the timer has elapsed (step S17). If the time-up time t1 has not elapsed, the process returns to step S16 to continue the state of prohibiting the idle stop function, and in the subsequent step S17, it is determined again whether the time-up time t1 set in the timer has elapsed, Steps S16 and S17 are repeated until the up time t1 has elapsed. On the other hand, if it is determined in step S11 that the pressing operation of the idle stop-off switch 8 is a long-pressing operation for 2 seconds or more, the process proceeds to step S12, where the count value indicates the number of pressing operations of the idle stop-off switch 8. The off switch on counter is incremented by “1”. In the next step S13, it is determined whether or not the counter value of the idle stop-off switch on counter is “2”, and the counter value is not “2” (at this time, the counter value of the idle stop-off switch on counter is If "1") is determined, the process proceeds to step S14. In step S14, when the counter value of the idle stop-off switch on counter is “1”, idle stop is prohibited. As a result, the idle stop is prohibited in step S14, and the process returns to the main program execution process immediately before the transition to the interrupt process.
If the counter value of the idle stop-off switch on counter is “2”, that is, if the long-pressing operation of the idle stop-off switch 8 for 2 seconds or more is the second time, the process proceeds from step S13 to step S18. The idle stop-off switch on counter having a value of “2” or the timer that has expired after time t1 has been reset to zero. In the subsequent step S19, the state in which the idle stop function is disabled is canceled by resetting the idle stop off switch on counter or the timer to zero in step S18, the idle stop function is restored, and immediately before the transition to this interrupt processing. Return to the main program execution process.

Here, an operation for prohibiting the idle stop function when the counter value of the idle stop off switch on counter is “1” in step S14 will be described.
For example, various vehicle information detected by various detectors including an ignition key sensor, a first clutch switch, a second clutch switch, a brake vacuum sensor, an engine hood switch, a neutral position sensor, a current sensor, a battery temperature sensor, and an engine water temperature sensor. When the automatic stop condition of the idle stop function is determined, the engine stop control signal is set, and the engine stop control signal is output to the fuel injection control means or the starter motor 3, the idle stop off switch used in step S12 is used. The counter value of the on-counter is “1” as a condition for prohibiting the idle stop function.With this configuration, the idle stop-off switch on counter is incremented by “1” in step S12. When the counter value changes from “0” to “1” and from “1” to “2”, the condition for prohibiting the idle stop function is satisfied during the period when the counter value is “1”. Even if the automatic stop condition of the idle stop function is satisfied, the idle stop function does not function and is turned off. That is, the engine maintains an idling state.
When the process proceeds from step S13 or step S17 to step S18, the idle stop-off switch-on counter is reset to zero in step S18 when the interrupt program shown in FIG. 3 is omitted, and the counter value becomes “0”. Therefore, the idle stop function is operable, and the automatic stop condition is determined based on various vehicle information detected by the various detectors while the ECU 6 is executing the main program.
In other words, the idle stop function OFF operation is performed when the period detected by the operation period detection means 81 is equal to or shorter than a predetermined first period, and in this case, the idle stop function is stopped after a certain time has elapsed. The function returns automatically. Further, the idle stop-off control unit 63 prohibits the idle stop function when the first pressing operation period detected by the operation period detection unit 81 exceeds the first period, and further controls the operation period. When the second pressing operation period detected by the detecting means 81 exceeds the first period, the prohibited state of the idle stop function is canceled and the idle stop function is restored.

In this embodiment, if the second operation is a short-term operation of less than 2 seconds after the first long-pressing operation of the idle stop-off switch 8 for 2 seconds or more, the first 2 The idle stop function is prohibited by a long press operation for more than one second, but the second short-term operation is ignored and the idle stop function prohibited state is maintained.

  In the above description, step S16 corresponds to the prohibiting means 76. Steps S17 and S19 correspond to the canceling means 77. Step S11, step S12, step S13, and step S14 correspond to the prohibition continuation setting means 78.

As described above, according to this embodiment, the idle stop function is prohibited by operating the idle stop-off switch 8 for the first long time exceeding the predetermined first period, and the second long time. As long as no push operation is performed, the prohibition of the idle stop function is continued. When the second long press operation is performed, the prohibition of the idle stop function is released. In addition, if the idle stop-off switch 8 is pressed for the second time and the idle stop function 8 is released, the idle stop function is disabled. However, when the time-up time t1 set in the timer elapses, the idle stop function automatically returns. Further, in a state where the idle stop function is prohibited by the first long press operation of the idle stop off switch 8, the short press operation of the idle stop off switch 8 is ignored.
Therefore, the idle stop function can be continuously prohibited and the prohibition can be canceled by an extremely simple operation such as a long press operation of the idle stop off switch 8, and the idle that accurately reflects the driver's intention. This is even more advantageous in realizing the stop operation.

(Third embodiment)
Next, a third embodiment will be described.
Also in this embodiment, FIG. 1 is used as a block diagram showing a control device for an idle stop vehicle including a configuration of an electric system around the engine. The description of each part shown in FIG. 1 is the same as that of the second embodiment, and thus the description of the part described in the second embodiment is omitted.
Also in this embodiment, the idle stop-off control means 63 is stored in the memory as an interrupt processing program executed by outputting an interrupt request signal to the interrupt request signal input terminal, and the idle stop-off switch 8 is operated. As a result, the operation shown in the flowchart of FIG. 4 is realized.
FIG. 4 is a flowchart showing an operation when the idle stop-off switch 8 is operated in the control apparatus for the idle stop vehicle of this embodiment.
Hereinafter, the operation of the control apparatus for the idle stop vehicle according to this embodiment will be described with reference to the flowchart shown in FIG. In FIG. 4, the same or equivalent processes as those in the flowchart shown in FIG.
In this embodiment, if it is determined in step S11 that the pressing operation of the idle stop-off switch 8 is not a long pressing operation for 2 seconds or more, that is, a short pressing operation, the process proceeds to step S15.
In step S15, time t1 is set in the timer, and the timer is started. In the subsequent step S16, the idle stop function is prohibited, and it is further determined whether or not the time-up time t1 set in the timer has elapsed (step S17). If the time-up time t1 has not elapsed, the process returns to step S16 to continue the state of prohibiting the idle stop function, and in the subsequent step S17, it is determined again whether the time-up time t1 set in the timer has elapsed, Steps S16 and S17 are repeated until the up time t1 has elapsed.

  In this embodiment, the idle stop function OFF operation is performed when the period detected by the operation period detecting means 81 is equal to or shorter than a predetermined first period, and in this case, a certain time has elapsed. Later, the idle stop function automatically returns. Further, the idle stop-off control unit 63 prohibits the idle stop function when the first pressing operation period detected by the operation period detection unit 81 exceeds the first period, and further controls the operation period. When the second pressing operation period detected by the detecting means 81 exceeds the first period, the prohibited state of the idle stop function is canceled and the idle stop function is restored.

  Further, in this embodiment, after the first long-pressing operation of the idle stop-off switch 8 for 2 seconds or more, when the second operation is a short-term operation of less than 2 seconds, the first time The idle stop function is prohibited by a long-pressing operation for 2 seconds or more. However, when the second short-time operation is performed, the time-up time t1 set in the timer elapses, and thus The prohibited idle stop function returns.

  As described above, according to this embodiment, the prohibition of the idle stop function can be continued and the prohibition can be canceled by an extremely simple operation such as a long press operation of the idle stop off switch 8. This is even more advantageous in realizing an idle stop operation that accurately reflects the driver's intention.

(Fourth embodiment)
In each of the embodiments described above, the control device for the idle stop vehicle has been described as including the idle stop off switch 8 that can selectively use the long press and the short press with one switch. In addition to the switch 8, another switch having the same function may be separately provided. If this other switch is installed integrally with the steering wheel of the vehicle so that the driver can operate it at hand, the usability is further improved. Further, such a handle-integrated switch may be configured as a switch dedicated for prohibiting a short idle stop.

  DESCRIPTION OF SYMBOLS 1 ... Engine, 2 ... Alternator, 3 ... Starter motor, 4 ... Battery, 5 ... On-vehicle equipment, 6 ... ECU, 7 ... Current sensor, 8 ... Idle stop-off switch (switch), 61 …… Engine automatic stop means, 62 …… Engine restart means, 63 …… Idle stop-off control means, 71 …… Normal auto start means, 72 …… Forced auto start means, 76 …… Prohibit means, 77 …… Release means, 78... Prohibition continuation setting means, 81... Operation period detection means.

Claims (3)

A control device for an idle stop vehicle having an idle stop function for automatically stopping the engine when an automatic stop condition is satisfied during operation of the engine,
Prohibiting means for prohibiting the idle stop function;
When a predetermined period has elapsed since the idle stop function was prohibited by the prohibition means, a release means for canceling the prohibition of the idle stop function;
An idle stop vehicle control apparatus comprising: Regardless of a release command by the release means, further comprising a prohibition continuation setting means for setting to continue prohibition of the idle stop function by the prohibition means,
The control apparatus for an idle stop vehicle according to claim 1.   The prohibiting means includes a switch for prohibiting the idle stop function, and also serves as prohibition continuation setting means for performing setting for continuing prohibition of the idle stop function by a pressing operation of the switch for a predetermined time or longer. The control device for an idle stop vehicle according to claim 2.

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