JP2000018060A - Engine automatically stopping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obstruct unnecessary control for automatically stopping an engine, and improve operability while suppressing consumption of a battery by canceling control for automatic stopping the engine by a control means when a time after an engine is started is less than a regulated time, or the times of control for automatically starting the engine is not ness than regulated times. SOLUTION: A control means 90 has both functions of control for automatically stopping an engine when a predetermined stop condition is setup and control for automatically starting the engine 2 when a predetermined start condition is setup. An automatic start time count function is arranged as well as arranging a timer part 134 in the control means 90, for example, in an engine controlling part 90A. In the case where a time after the engine 2 is started is less than a regulated time, or in the case where the times of control for automatically starting the engine 2 is not less than regulated times, control for automatically stopping the engine 2 is canceled by the control means 90. On the other hand, in the case where the time after the engine 2 is started is not less than the regulated time, and in the case where the times of control for automatically starting the engine 2 are less than the regulated times, control for automatically stopping the engine 2 is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic engine stop device, and more particularly to an automatic stop control of a control means for preventing unnecessary automatic stop control of an engine.
The present invention relates to an automatic engine stop device that can improve drivability.

[0002]

2. Description of the Related Art In a vehicle, an automatic transmission is provided in a power transmission system between an engine and wheels to automatically control the speed of the engine from the engine.

Further, in the engine, in order to reduce fuel consumption, the engine is automatically controlled to stop when a predetermined stop condition is satisfied, and restart control is performed when a predetermined start condition is satisfied. Some engines are provided with an automatic engine stop device that also performs an automatic engine stop.

[0004] As the engine automatic stop device, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 6-200792. The vehicle start / stop device disclosed in this publication operates to stop the engine in a predetermined driving state when the vehicle is stopped, restarts the engine by depressing a clutch, and automatically starts the engine immediately after the restart. In a vehicle start / stop device that prohibits a stop operation for a predetermined time, a time period from the start of the engine to a stop is measured, and control is performed so as to change the time until the next automatic stop operation of the engine based on the measured time and the operating state. A control means is provided to protect the battery and maintain good fuel economy.

[0005] Further, there is one disclosed in Japanese Patent Application Laid-Open No. 9-42006. An automatic engine stop / start apparatus disclosed in this publication automatically controls an engine when a vehicle speed becomes zero and a transmission is in a neutral position, and a stop condition including a clutch pedal is returned is satisfied. In the automatic stop and start device provided with:
2 (S1> S2, S2 ≒ 0), including timer means for starting when the displacement is made, and means for prohibiting automatic stop of the engine until the timer means measures a predetermined time t. Even if the condition is satisfied, the engine is not automatically stopped until a certain time has elapsed, and the need to restart immediately after the automatic stop is reduced.

[0006]

By the way, in the conventional engine automatic stop device, a system has been developed in which a throttle opening / closing control for electronically opening / closing a throttle valve by a throttle actuator, that is, an automatic transmission having a so-called electronic control throttle is combined. I didn't.

[0007] At present, an automatic engine stop device combined with a manual transmission has been developed.

However, in an automatic engine stop device combined with a manual transmission, there is a risk that the clutch may be engaged before the engine is completely started when the automatic start is performed after the engine is stopped. In such a case, an engine stall is caused, and improvement has been desired.

For this reason, the present invention provides a system for securely engaging and starting a clutch by combining an automatic transmission having an electronically controlled throttle with an automatic engine stop device.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an engine equipped with an automatic transmission mounted on a vehicle, and a throttle valve provided on the engine is provided with a throttle actuator. A throttle opening / closing control for electronically opening / closing, a shift control for the automatic transmission, an automatic stop control for automatically stopping the engine when a predetermined stop condition is satisfied, and an automatic stop control for automatically stopping the engine when a predetermined start condition is satisfied. An engine automatic stop device having control means for performing automatic start control for automatically starting, wherein the control means includes a timer function for measuring time after engine start, and an automatic start count function for counting the number of times of the automatic start control. The time after the engine is started is less than a predetermined time, or the number of times of the automatic start control is set in advance. When more than predetermined number of times, characterized by being configured to control so as to cancel the automatic stop control by the control means.

Also, an engine equipped with an automatic transmission is mounted on a vehicle, and a throttle opening / closing control for electronically opening / closing a throttle valve provided in the engine by a throttle actuator and a shift control of the automatic transmission. Automatic engine stop device having control means for performing automatic stop control for automatically stopping the engine when a predetermined stop condition is satisfied and automatic start control for automatically starting the engine when a predetermined start condition is satisfied Wherein the control means is provided with a voltage measurement function of measuring a battery voltage, and when the battery voltage is lower than a predetermined voltage, control is performed to cancel the automatic stop control by the control means. Features.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION
If the time after starting the engine is less than a predetermined time or the number of times of the automatic start control is equal to or more than a predetermined number of times, control is performed to cancel the automatic stop control by the control means, and the automatic unnecessary engine is not required. Stop control is prevented to improve drivability.

When the battery voltage is lower than a predetermined voltage, control is performed so as to cancel the automatic stop control by the control means, so that the battery voltage is not consumed and unnecessary automatic stop control of the engine is performed. Has also been blocked.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 3 show an embodiment of the present invention. 2, reference numeral 2 denotes an engine (also referred to as "Eng"), 4 denotes a cylinder block, 6 denotes a cylinder head, 8 denotes a cylinder head cover, 10 denotes a combustion chamber, 12 denotes an intake valve, 14 denotes an exhaust valve, and 16 denotes an intake manifold. , 18 is an intake passage, 20 is a throttle valve, 22 is an air cleaner, 24 is an exhaust manifold, 26 is an exhaust passage, 28 is an exhaust pipe, and 30 is a catalyst.

A swirl control valve 32 is provided in the intake passage 18 downstream of the throttle valve 20, and a fuel injection valve 34 is provided in a portion downstream of the swirl control valve 32.

A blow-by gas passage 36 that bypasses the throttle valve 20 and communicates with the cylinder head cover 8 is provided immediately downstream of the air cleaner 22.

One end of a pressure detection passage 38 is provided in communication with the intake passage 18 downstream of the throttle valve 20, and a pressure sensor 40 for detecting the intake pipe pressure is provided at the other end of the pressure detection passage 38. Provide.

Further, the engine 2 is provided with an exhaust gas recirculation device (EGR device) 42 for recirculating a part of the exhaust gas to the intake system of the engine 2.

The exhaust gas recirculation device 42 recirculates a part of the exhaust gas into the combustion chamber 10 of the engine 2 to lower the combustion temperature and reduce the generation of NOx.
In order to ensure the operability of the engine 2, the engine 2 is not operated when the engine 2 is cold, when the throttle valve 20 is fully closed, when the engine 2 is operating under a high load, and when the intake pipe pressure is low.

The exhaust gas recirculation device 42 includes an EGR passage 44, an EGR control valve 46, and an EGR solenoid valve 4.
8 is provided. One end of the EGR passage 44 communicates with an EGR inlet 50 that opens to the exhaust passage 26, and the other end of the EGR passage 44 is connected to the intake passage 1 downstream of the throttle valve 20.
8 is open to an EGR recirculation port 52. EGR
The control valve 46 is attached to the intake manifold 16 and adjusts the amount of exhaust gas recirculated by opening and closing the EGR passage 44 by a valve body 54.

An air assist passage 56 is provided to connect the intake passage 18 upstream of the throttle valve 20 with the fuel injection valve 34, and an air assist solenoid valve 58 is provided in the air assist passage 56.

A communication passage 60 for connecting the intake passage 18 downstream of the throttle valve 20 with the cylinder head cover 8 is provided, and a pressure adjusting valve 62 is provided in the middle of the communication passage 60.

A control passage 64 having an open end at the intake passage 18 upstream of the swirl control valve 32 is provided.
A way valve 66 is provided, the other end of the control passage 64 is branched into two, and one of the first control passages 6
4-1 is provided in communication with the EGR control valve 46, and the EG is provided in the middle of the first control passage 64-1.
An R solenoid valve 48 is disposed, and the other second control passage 64-2 is connected to the swirl control valve 3.
The swirl control solenoid valve 70 is provided in the middle of the second control passage 64-2.

One end of a fuel supply passage 72 is connected to the fuel injection valve 34, and the other end of the fuel supply passage 72 is connected to a fuel pump 76 provided in a fuel tank 74. . At this time, a fuel filter (not shown) is provided in the middle of the fuel supply passage 72.

An evaporative fuel passage 78 is provided for connecting the fuel tank 74 to the intake passage 18 near the throttle valve 20. A two-way valve 80 is provided in the evaporative fuel passage 78 sequentially from the fuel tank 74 side. , A canister 82 and a purge solenoid valve 84.

Further, in order to electronically control the opening and closing of the throttle valve 20, a throttle actuator 86 comprising a drive motor is provided, and a throttle opening sensor 88 is also provided.

The purge solenoid valve 8
4 is provided in communication with an engine control unit (engine control module, ECM) 90A of the control means 90, which will be described later. The engine control unit 90A of the control means 90 includes a fuel injection valve 34, a pressure sensor 40, an EGR solenoid valve 48, an air assist solenoid valve 58,
A swirl control solenoid valve 70, a fuel pump 76, a purge solenoid valve 84, and a throttle actuator 86 are connected and provided, respectively, and an accelerator opening sensor 94 for detecting a depression amount of an accelerator pedal 92 and a crank angle for detecting a crank angle. A sensor 96, a water temperature sensor 98 for detecting a cooling water temperature, a starter 100, an oxygen sensor 1 for detecting an oxygen concentration in exhaust gas
02, a battery 106 is connected via an ignition switch (IG SW) 104.

As shown in FIG. 2, the control means 90 comprises an engine control section 90A for controlling the engine 2 and a transmission control section 90B for controlling the automatic transmission 108. The engine control unit 90A and the transmission control unit 90
B are in communication with each other.

That is, the engine control unit 90A supplies the throttle signal VAS and the overdrive cut signal ODC
And the engine speed IGP are output to the transmission control unit 90B, and the transmission control unit 90B outputs a D range idle-up signal DIU to the engine control unit 90A.

The transmission control unit 90B includes:
The ignition switch 104, the compressor clutch 110, a vehicle speed sensor 112 for detecting a vehicle speed, a turbine shaft speed sensor 114 for detecting a rotation speed of a turbine shaft (not shown), and an oil temperature sensor 116 for detecting an oil temperature.
And "P", "R", "N", "D", "2", "L"
Shift position switch 1 for detecting each shift position
18, shift lever 120, brake pedal 122
A brake switch 124 for detecting a depression state of
A speedometer 126, a transfer 128, a lock-up solenoid 130, "P", "R", and the like are provided in a driver seat (not shown) of a vehicle (not shown).
A shift control unit 132 that performs shift control to each of the shift positions “N”, “D”, “2”, and “L” is connected to each other.

At this time, the control means 90 includes a throttle opening / closing control for electronically opening and closing the throttle valve 20 provided in the engine 2 by a throttle actuator 86, a shift control of the automatic transmission 108, It has a function of performing automatic stop control for automatically stopping the engine 2 when a stop condition is satisfied, and automatic start control for automatically starting the engine 2 when a predetermined start condition is satisfied. .

That is, the throttle opening / closing control by the control means 90 is such that an accelerator opening sensor 94 for detecting the depression amount is attached to an accelerator pedal 92 and the throttle valve 20 is electronically opened and closed by a throttle actuator 86 composed of a drive motor. Yes, it does not use an accelerator cable.

The shift control of the automatic transmission 108 by the control means 90 controls the lock-up solenoid 130 and the shift control section 132 and controls the automatic transmission 10.
8 automatically performs the upshift and downshift.

Further, the automatic stop control by the control means 90 is such that the engine 2 is automatically turned off when a predetermined stop condition is established, for example, when the vehicle is stopped in an idling operation state. The engine is stopped to improve fuel efficiency.

Further, the automatic start control by the control means 90 is to automatically start the engine 2 when a predetermined start condition set in advance after the automatic stop control is satisfied.

The control means 90 is provided with a timer function for measuring the time X after the engine is started and an automatic start number counting function for counting the number F of the automatic start control. When the number of times of the automatic start control is less than a specified time, which is a set specified value, or is equal to or more than a specified number of times, which is a predetermined set value, the automatic stop control by the control means 90 is controlled to be canceled.

More specifically, a timer section 134 is provided in, for example, the engine control section 90A of the control means 90, and an automatic start number counting function is provided by being incorporated in a control program.

If the time X after the start of the engine is less than the specified time, or if the number F of the automatic start control is equal to or more than the specified number, the automatic stop control by the control means 90 is cancelled, and When the time X is equal to or longer than the specified time and the number F of the automatic start control is less than the specified number, the automatic stop control by the control means 90 is performed.

FIG. 1 shows a method for actually determining whether or not the number F of the automatic start control is equal to or more than a specified number.
As shown in the figure, when the vertical axis is the number F of the automatic start control, and the horizontal axis is the time U from the OFF state of the ignition switch 104 to the time X after the engine is started, the engine stop zone and the engine non-stop A curve f (U) for determining a zone is provided, and the number F of automatic start control and the curve f
(U) is compared.

Further, the control means 90 has a function of changing the shift lever position of the automatic transmission 108 to the parking position when performing the automatic stop control.

Next, the operation will be described with reference to the control flowchart of the automatic engine stop device of FIG.

When the control program starts, it is determined (200) whether or not the ignition switch 104 is ON.

If the determination (200) is NO, the time U from the OFF state of the ignition switch 104 to the time X after the engine is started is set to U = 0, and the automatic start is set. The control frequency F is set to F = 0 (202), and the determination (200) is performed again. In this process (202), it is necessary to manually turn on the ignition switch 104.

If the judgment (200) is YES, a judgment (204) is made as to whether or not the number F of automatic start control is F 、 0.
If 4) is YES, the process proceeds to a determination (206) as to whether or not the accelerator opening is zero, and a determination (204).
Is NO, the process proceeds to a judgment (208) as to whether or not the engine speed is zero.

In the judgment (206) as to whether or not the accelerator opening is zero, if the judgment (206) is YES, an instruction of "do not step on the accelerator until the start" is displayed on the indicator (210), and the judgment is made again. (206) is performed, and if the determination (206) is NO, the throttle opening is set to the restart state, the measurement and addition of the time U is started, the starter 100 is turned on (212), and the engine speed is changed. Is determined to be not less than the specified value (214).

When the judgment (214) is NO, the judgment (214) is repeated until the judgment (214) becomes YES, and when the judgment (214) becomes YES, the starter 100 is turned off. When the automatic transmission 108 is turned off, 1 is added to the number F of the automatic start control to obtain a new number F of the automatic start control, the shift state of the automatic transmission 108 is restored, and the throttle valve 20 and the accelerator pedal 92
(216), and the process proceeds to a determination (218) as to whether or not the engine speed is zero.

Further, in the judgment (208) as to whether or not the engine speed is zero, if the judgment (208) is YES, the judgment (208) is repeated until the judgment (208) becomes NO. If the judgment (208) is NO, the measurement and addition of the time U are started,
The number F of the automatic start control is set to F = 1 (220), and the process proceeds to a judgment (218) as to whether or not the engine speed is zero.

If the judgment (218) is YES,
The number F of the automatic start control is set to F = 0 (222), and the process returns to the determination (200) as to whether or not the ignition switch 104 is ON. If the determination (218) is NO, the vehicle speed Is determined to be zero (224).

If the determination (224) is YES, the process proceeds to a determination (226) as to whether or not the accelerator opening is zero. If the determination (224) is NO, it is determined that the vehicle has stopped. When the specified value is reached, the measurement of the time T measured to stop the engine is stopped, T = 0 is set (228), and the process returns to the determination (218) of whether the engine speed is zero or not.

If the above judgment (226) is NO, the measurement of the time T is stopped, T = 0 is set (228), and the judgment is made as to whether the engine speed is zero (218). Return, and the above-mentioned judgment (226) is YES
In the case of (3), it is determined whether or not the time T is measured (23).
0).

If this determination (230) is NO, the measurement of the time T is started (232), and the process proceeds to a determination (234) as to whether or not the time T is equal to or more than a specified value, that is, a specified value. 230) is YES, the time T
Is determined to be equal to or longer than a specified time as a specified value (234).

Further, if the judgment (234) is NO,
Returning to the determination (218) of whether the engine speed is zero,
If the determination (234) is YES, it is determined whether the voltage of the battery 106 is equal to or higher than a specified voltage, which is a specified value (236).
Move to

If the determination (236) is NO, the process returns to the determination (218) as to whether the engine speed is zero, and if the determination (236) is YES, the ignition switch 104 is turned off. It is determined (238) whether or not the time X after the engine is started is measured.

At this time, if the determination (238) is YES, the process proceeds to a determination (240) as to whether or not the time X is equal to or longer than a specified time, and if the determination (238) is NO, the automatic operation is performed. The process is shifted to the determination (242) as to whether or not the relationship between the number F of the start control and the curve f (U) for determining the engine stop zone and the engine non-stop zone is F <f (U).

If it is determined in the determination (240) that the time X is equal to or greater than the specified time as a specified value, if the determination (240) is NO, the determination (218) is performed to determine whether the engine speed is zero. If the determination (240) is YES, the number F of the automatic start control is set to F = 1, and the time U from when the ignition switch 104 is turned off to when the time X after the engine start is measured is U. Is set to U = 0, the measurement of the time X is stopped, and the time X is set to X = 0 (244).

If the process (244) and the above-mentioned judgment (242) are YES, it is judged that the vehicle is not traveling in congestion, the engine 2 is stopped, and the shift position of the shift lever 120 is stored. The shift position of the lever 120 is changed to the parking position (246), and the process returns to the determination (200) of whether the ignition switch 104 is in the ON state.

If the judgment (242) is NO,
It is determined that the vehicle is running in congestion, the stop of the engine 2 is suspended, the measurement of the suspension time X is started (248), and the process returns to the determination (218) of whether the engine speed is zero or not.

Even during a traffic jam, the vehicle speed becomes zero, the accelerator opening becomes zero, the time T becomes a specified value or more, the battery voltage becomes more than a specified voltage, and the measured time X Is equal to or more than a specified time, which is a specified value, the number F of automatic start control is set to F = 1, and the time U from the OFF state of the ignition switch 104 to the time X after the engine is started is measured. U = 0 is set, the measurement of the time X is stopped, the time X is reset to X = 0, and the engine 2 is stopped.

Thus, the automatic stop control cancel function of the control means 90 can prevent unnecessary automatic stop control of the engine 2 and can improve drivability. When in the state,
It is not necessary to frequently repeat the automatic stop control of the engine 2, and it is possible to avoid the consumption of the battery voltage.

Further, by controlling the speed of the automatic transmission 108, the starting and starting after the idle stop can be performed smoothly without artificially engaging the clutch while the starting is incomplete.

Further, when the automatic stop control of the engine 2 is performed, a function of changing the shift lever position of the automatic transmission 108 to the parking position is added to the control means 90 so that the engine 2 can be automatically stopped on a slope or the like. Even when the stop control is performed, the shift lever is in the parking position, the stopped state of the vehicle can be reliably maintained, and safety can be improved.

Further, when the battery voltage is lower than a predetermined voltage, which is a predetermined battery voltage predetermined value, the control means 90 performs control to cancel the automatic stop control, so that the consumption of the battery voltage is ensured. This can be avoided and unnecessary automatic stop control of the engine 2 can be prevented, so that drivability can be improved, which is practically advantageous.

It should be noted that the present invention is not limited to the above-described embodiment, and various applications and modifications are possible.

For example, during the condition for canceling the automatic stop control of the control means, the O.S.
A configuration (SG1) in which items at the time of N operation are added may be adopted.

That is, the vehicle is equipped with a large number of electric devices such as an air conditioner, an audio device, a television, and a room light. When the engine is automatically stopped when these electric devices are turned on, the electric devices are turned on. The operation further increases the voltage consumption of the battery, thereby turning on the electric equipment.
Cancel the automatic stop control by the control means during operation,
This is to avoid the voltage consumption of the battery by the electric device.

In this case, when the electric device is turned on, the automatic stop control by the control means is canceled, so that a sufficient battery charging time can be ensured, and the battery voltage consumption can be reliably avoided. It is.

Further, in the embodiment of the present invention, when the battery voltage is lower than a predetermined voltage, which is a predetermined battery voltage specified value, the control means is controlled to cancel the automatic stop control. When determining the voltage, a function of controlling the cancel operation of the automatic stop control according to the remaining amount of the battery voltage may be added to the control means (SG2).

That is, a plurality of, for example, two specified voltages a,
b (a> b) is set, and when the remaining amount of the battery voltage is equal to or higher than the specified voltage a, automatic stop control is performed by the control unit, and the remaining amount of the battery voltage is lower than the specified voltage a and equal to or higher than the specified voltage b In this case, the control means cancels the automatic stop control by the control means after a lapse of a predetermined time, and immediately cancels the automatic stop control by the control means when the remaining battery voltage is less than the specified voltage b.

In this case, it is possible to add a variation to the control method for canceling the automatic stop control according to the remaining amount of the battery voltage, and it is possible to perform fine control, which is practically advantageous.

Further, it is also possible to adopt a configuration (SG3) that takes into account the traveling prediction signal of the vehicle when canceling the automatic stop control by the control means.

That is, the control means determines whether the current stop state of the vehicle is a stop state merely for waiting for a traffic light or a stop state for the purpose of stopping for a long time.
The control is performed based on the vehicle travel prediction signal that is the result of this determination.

When the control means makes a decision, the control means sequentially learns and controls various kinds of information such as the running distance, the running speed, and the braking state up to the present time. Based on various information, a future running condition of the vehicle is predicted and used as a vehicle running prediction signal. The learning function of the control means can be initialized.

Then, the driving pattern of the driver is successively learned and controlled by the control means, so that automatic stop control reflecting the driving pattern of the driver can be performed, which can contribute to improvement in usability.

[0075]

As described above in detail, according to the present invention, an engine equipped with an automatic transmission is mounted on a vehicle, and a throttle valve disposed on the engine is electronically opened and closed by a throttle actuator. Open / close control, shift control of the automatic transmission, automatic stop control for automatically stopping the engine when predetermined stop conditions are satisfied, and automatic start control for automatically starting the engine when predetermined start conditions are satisfied. In the automatic engine stop device having the control means, the control means is provided with a timer function for measuring a time after the engine is started and an automatic start number counting function for counting the number of times of the automatic start control, and the time after the engine is started is set in advance. If the time is less than the specified time or the number of times of the automatic start control is more than the specified number of times, the automatic stop by the control means Since the control is performed to cancel the control, the automatic stop control cancel function of the control means can prevent unnecessary automatic stop control of the engine, thereby improving drivability, which is practically advantageous. In addition, when the vehicle is in a congested state, it is not necessary to frequently repeat the automatic stop control of the engine, and the consumption of the battery voltage can be avoided. Further, by controlling the speed of the automatic transmission, it is possible to smoothly start and start after the idle stop without artificially engaging the clutch while the starting is incomplete.

A throttle opening / closing control in which an engine equipped with an automatic transmission is mounted on a vehicle and a throttle valve arranged in the engine is electronically opened / closed by a throttle actuator, and a shift control of the automatic transmission. Automatic engine stop device having control means for performing automatic stop control for automatically stopping the engine when a predetermined stop condition is satisfied and automatic start control for automatically starting the engine when a predetermined start condition is satisfied In the configuration, the control means is provided with a voltage measurement function of measuring a battery voltage, and when the battery voltage is less than a predetermined voltage, control is performed to cancel the automatic stop control by the control means. When the battery voltage is lower than the specified voltage, the control means performs control to cancel the automatic stop control, and Together may avoid depletion of the voltage reliably, also can prevent unnecessary automatic stop control of the engine and give improved driveability, it is practically advantageous.

[Brief description of the drawings]

FIG. 1 is a control flowchart of an automatic engine stop device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an automatic engine stop device.

FIG. 3 is a schematic block diagram of an automatic engine stop device.

[Explanation of symbols]

 2 Engine 20 Throttle valve 34 Fuel injection valve 40 Pressure sensor 42 Exhaust gas recirculation device (EGR device) 58 Air assist solenoid valve 70 Swirl control solenoid valve 74 Fuel tank 82 Canister 84 Purge solenoid valve 86 Throttle actuator 88 Throttle open Degree sensor 90 Control means 90A Engine control part 90B Transmission control part 94 Accelerator opening sensor 96 Crank angle sensor 98 Water temperature sensor 100 Starter 102 Oxygen sensor 104 Ignition switch 106 Battery 108 Automatic transmission 110 Compressor clutch 112 Vehicle speed sensor 114 Turbine Shaft speed sensor 116 Oil temperature sensor 118 Shift position switch 124 Brake switch 126 Speedometer Data 128 transfer 130 lock-up solenoid 132 shift control section 134 timer section

Continued on the front page F-term (reference) 3G092 AA01 AA10 AA17 AA19 AC03 BA10 CA02 CB04 DG08 EA09 EA14 EA17 EB04 FA30 GA01 GA04 GA10 GB10 HE01Z HF02Z HF08Z HF12Z HF19Z 3G093 AA05 AB00 DB21 DA02 DB03 FA11 FB05

Claims (5)

[Claims] A throttle opening / closing control for electronically opening and closing a throttle valve provided on the engine by a throttle actuator, and a shift control for the automatic transmission. Automatic engine stop device having control means for performing automatic stop control for automatically stopping the engine when a predetermined stop condition is satisfied and automatic start control for automatically starting the engine when a predetermined start condition is satisfied Wherein the control means is provided with a timer function for measuring time after engine start and an automatic start number counting function for counting the number of times of the automatic start control, wherein the time after engine start is less than a predetermined time set automatically or automatically. When the number of times of the start control is equal to or more than a predetermined number of times, the automatic stop control by the control means is canceled. An automatic engine stop device characterized in that it is configured to control the engine to run. 2. The automatic engine stop device according to claim 1, wherein the control unit changes a shift lever position of the automatic transmission to a parking position when performing automatic stop control. 3. The automatic engine stop device according to claim 1, wherein the control means adds an item for an ON operation of an electric device mounted on the vehicle to a condition for canceling the automatic stop control. 4. A throttle opening / closing control in which an engine equipped with an automatic transmission is mounted on a vehicle and a throttle valve provided in the engine is electronically opened / closed by a throttle actuator, and a shift control of the automatic transmission. Automatic engine stop device having control means for performing automatic stop control for automatically stopping the engine when a predetermined stop condition is satisfied and automatic start control for automatically starting the engine when a predetermined start condition is satisfied Wherein the control means is provided with a voltage measurement function of measuring a battery voltage, and when the battery voltage is lower than a predetermined voltage, control is performed to cancel the automatic stop control by the control means. A feature is an automatic engine stop device. 5. The automatic engine stop device according to claim 1, wherein the control means controls the cancel operation of the automatic stop control according to the remaining amount of the battery voltage when determining the battery voltage.