JP2013087668A - Engine memory controlling method and memory control device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a memory control device for a marine outboard engine capable of storing the operation information stably.SOLUTION: An operating condition memory controlling means (ECU 30) includes a function to judge whether an engine stop switch 16 is on or off during the engine 10 being in operation (S301), a function to reflect the obtained on/off information of the engine stop switch on the operation control of the engine 10 after a certain time period (S302), a function to start writing into an EEPROM using the on/off information of the engine stop switch (S303), and a function to store only the particular information in case such information about a failure etc. is generated, in the very timing such information is generated (S304).

Description

  The present invention relates to an engine memory control device and an engine memory control method, and more particularly, to an engine memory for a small outboard motor that is not equipped with a battery and starts the engine by manually rotating a crankshaft. The present invention relates to a control device and an engine storage control method.

For small outboard motors with small displacement, carburetor type fuel supply is the mainstream.
In addition, in order to configure a small outboard motor at a light weight and low cost, a recoil starter is deployed without a battery and a starter for starting, and the engine is operated manually by the operator. It was common to start up.
Here, the outboard motor is a marine propulsion device in which an engine, its auxiliary equipment, gears, shafts, screws and the like are integrated.
In addition, the engine storage control device is a device that stores information such as the use state, failure history, or operation state of the engine in the ECU at an appropriate timing to be useful for maintenance at the dealer or development by the manufacturer. That is.

In recent years, even small outboard motors with small displacements are changing from carburetor-type fuel supply to electronically-controlled fuel supply for the purpose of improving operability and maintainability, reducing exhaust gas, or improving output performance.
However, since a small, light, and low-cost engine is required, a starter such as a starter and a battery are often not provided.
In addition, in order to make use of the engine maintenance and future engine development by the manufacturer, ship maneuvering information of the ship by the user (for example, the time from engine start to engine stop, engine use such as the time when the engine is fully opened, etc.) Information) and user engine operation information (for example, rapid acceleration / deceleration information obtained by detecting the amount of change in the throttle sensor, engine operation information such as the number of shift changes obtained from the shift sensor), etc., need to be stored in the ECU There is.
In order to monitor the market, it is necessary to store a large amount of operation information that is not used in normal engine control, and the available space in the EEPROM of the ECU may be used as much as possible.

In Japanese Patent Laid-Open No. 2008-303776 (Patent Document 1), “the microprocessor is powered on from the battery via the key switch, and after initialization of the microprocessor is completed, the data is stored in three data storage areas. By comparing the stored data, it is possible to determine the data storage area in which the final value of the accumulated value of the operating time at the previous engine operation can be regarded as being correctly stored, and the final value of the accumulated value is correct. The integrated value stored in the data storage area that can be regarded as being stored is used as the initial value of data stored in the buffer memory when the engine is operating this time. "
That is, in the conventional battery-powered engine described in Japanese Patent Application Laid-Open No. 2008-303776, a method for writing operation information to three data storage areas before the power source of the ECU is lost and providing an appropriate maintenance time It is shown.

JP 2008-303776 A

In a conventional storage control device for an engine for a small outboard motor that is not equipped with a battery, the crankshaft is manually rotated to generate electric power, and the ECU is activated by the generated electric power to start the engine. While the engine is operating, the ECU is activated by the generated power. However, when the engine is stopped, the generated power is not supplied to the ECU, so the ECU is immediately turned off and does not function.
Therefore, various information must be written in the EEPROM provided in the ECU during normal operation of the engine.
Therefore, when the engine is in normal operation, information is written to the EEPROM every predetermined time, or information is written when an event (for example, engine failure) occurs at the moment when a specific condition is satisfied. Become.
However, if the ship operator stops the engine and the “timing to stop the engine” and “timing to write information to the EEPROM” overlap, the power is supplied while the ECU is writing to the EEPROM. As a result, EEPROM blur may occur.

Here, “EEPROM bucket” will be described.
In the actual operation when data is written to the EEPROM, all the data in the write target area is temporarily set to “1”, and the part other than the part of the information to be actually stored is set to “0” to generate the stored information.
Therefore, if the supplied power is lost when “data in the write target area is all“ 1 ”” when writing data to the EEPROM, the process ends at that stage, and the write target area is stored as a stored value. All the data of “1” becomes “1”, and the stored data becomes “untrusted”. This state is referred to as “EEPROM bucket”.
Looking at the information that is EEPROM blurred (that is, the information of the abnormal value written and stored), a stored value containing an extremely large value is generated, and the reliability of the information is lacking.

Also, the more information that is written, the higher the probability that “timing to stop the engine” and “timing to write information” overlap. The EEPROM can only write 8 bytes or 16 bytes at a time, and a time of 10 ms is required for each writing. Therefore, the larger the amount of information to be written, the more "the timing when the power supply is lost (ie, the timing when the engine stops) "And" timing to write information "will increase the probability of overlapping.
In addition, the number of times of writing is guaranteed if the time for writing information is set short and the frequency of writing information increases or the number of years of engine use increases. There is a possibility of exceeding the maximum number of times of writing to the EEPROM.

  The present invention has been made in order to solve the above-described problems. Even in an outboard engine that is not equipped with a battery, an abnormality in the write storage information of the ECU (EEPROM flash) occurs. It is possible to prevent and store highly reliable engine information, and even if the amount of information to be written is set to a large amount, the timing when the power supply is stopped due to the engine stop and the writing timing to the EEPROM do not overlap and are stable. It is an object of the present invention to provide an engine storage control device that can write to an EPROM.

An engine storage control device according to the present invention includes an operation state detection unit that detects an operation state of an engine, an engine stop unit that stops the operation of the engine, and a power generation unit that generates electric power by rotationally driving the crankshaft of the engine. A battery having an operation state storage / control unit for starting and storing and controlling the operation state of the engine, the engine start unit for starting the engine manually, and the power generation voltage generated by the power generation unit A memory control device for an engine that is not equipped,
The operation state storage / control unit is configured to determine whether the engine stop switch, which is the engine stop unit, is on or off during operation of the engine, and the determined on / off information of the engine stop switch after a predetermined time. A function to be reflected in engine operation control, a function to start writing to the EEPROM using the on / off information of the engine stop switch, and the individual generated when individual important information such as a failure or a warning occurs. It has a function to store only the important information at the timing when it is generated.

An engine storage control method according to the present invention is an engine storage control method for storing and controlling an engine operating state without a battery.
Determining whether the engine stop switch is on / off during operation of the engine, reflecting the determined on / off information of the engine stop switch to the operation control of the engine after a predetermined time; A step of starting writing to the EEPROM using on / off information, and a step of storing only the individual important information generated when individual important information such as a failure or a warning occurs. It is.

According to the present invention, the function for determining on / off of the engine stop switch, which is the engine stop means during engine operation, and the determined on / off information of the engine stop switch are reflected in the engine operation control after a predetermined time. The function to start writing to the EEPROM using the engine stop switch on / off information, and the timing when only the individual important information generated when individual important information such as a failure or warning occurs It has a function to memorize.
Therefore, it is possible to detect the timing when the engine is stopped by the user, and write processing to the EEPROM using that timing, so that the timing when the power supply is stopped and the timing when information is stored in the EEPROM are prevented from overlapping. Thus, engine operation information effective for maintenance can be stably stored in the EEPROM even for an outboard engine not equipped with a battery.
In addition, it is possible to store individual information having a large amount of information useful for future development of the engine in the EEPROM even in an engine of an outboard motor not equipped with a battery.
That is, according to the present invention, stored "engine operation information effective for maintenance" and "information useful for future development of the engine" are stored in the EEPROM of the ECU 30, and the stored information is appropriately provided to the user. Can do.

It is a figure which shows the whole structure when the outboard motor provided with the memory | storage control apparatus of the engine by this invention is mounted | worn with the small ship. It is a figure which shows schematic structure of the fuel-injection control system of the engine shown in FIG. It is a flowchart which shows the whole EEPROM storage control processing. It is a flowchart which determines an engine stop switch. It is a flowchart which performs an engine stop process. It is a flowchart of EEPROM write processing <1>. It is a flowchart of EEPROM write processing <2>. It is a flowchart of a buzzer stop process.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a diagram showing an overall configuration when an outboard motor equipped with a storage control device for an engine (internal combustion engine) according to the present invention is mounted on a small vessel, and shows an engine 10, a shaft (not shown), a propeller. The outboard motor in which 3 and the like are integrated includes an ECU (Electronic Control Unit) 30 as control means, and is mounted on the stern of the ship (small ship) 11.
A throttle lever 12 is disposed in the maneuvering seat (boat maneuvering room) 4, and the throttle lever 12 is opened via a throttle cable 13 through a shift link mechanism (not shown) in the outboard motor and the opening amount of the throttle valve 21. Adjust (intake air amount).
The throttle lever 12 is shifted to a shift position (forward (F) / neutral (N) / reverse (R)) via a shift cable 14 and a shift link mechanism and a gear mechanism (both not shown) in the outboard motor. Set.

An engine stop switch 16 is disposed in the maneuvering seat 4, and on / off information of the engine stop switch 16 is sent to the ECU 30 via a signal line (not shown).
The outboard motor is provided with a recoil type starter 15 that starts the engine manually, and by manually pulling the rope wound around the pulley of the recoil starter 15, the crankshaft is rotated. This makes it possible to start an engine that is not equipped with a battery or starter.

FIG. 2 is a diagram showing a schematic configuration of the “fuel injection control system” of the engine 10 shown in FIG. 1. In the figure, the engine 10 sucks air through the intake pipe 20, and the sucked air is Then, the air flows into the intake manifold 22 through the throttle valve 21 while the flow rate is adjusted.
An injector 23 is disposed immediately before the combustion chamber of the intake manifold 22 to inject gasoline fuel.
The intake air is mixed with the injected gasoline fuel to form an air-fuel mixture, flows into each of the plurality of cylinder combustion chambers, and is ignited and burned by the spark plug 24. The exhaust gas after combustion flows through the exhaust manifold 25 and is discharged outside the engine.

The throttle valve 21 is connected to a throttle opening sensor 31 as an idle operation state detecting means for detecting an idle operation state of the engine 10 and outputs a throttle opening signal proportional to the throttle opening to the ECU 30 via a signal line a. To do.
Based on this throttle opening signal, it is determined whether the throttle valve 21 is fully closed, and it is detected that the engine 10 is in an idle state.
An absolute pressure sensor 32 is disposed downstream of the throttle valve 21 and outputs a signal corresponding to the intake pipe absolute pressure PB (engine load) to the ECU 30 via the signal line b.
An intake air temperature sensor 33 is disposed upstream of the throttle valve 21 and outputs a signal proportional to the intake air temperature to the ECU 30 via the signal line c.

The exhaust manifold 25 is provided with an overheat sensor 34, which outputs a signal proportional to the engine exhaust temperature to the ECU 30 via a signal line d, and detects an engine warm-up operation at an appropriate position of the cylinder block in the vicinity thereof. A wall temperature sensor 35 as temperature detecting means is arranged, and outputs a signal proportional to the engine cooling wall temperature to the ECU 30 via the signal line e.
An ISC (Idle Speed Control) valve 26 controls the amount of air for maintaining the idle state during idle operation.
If the amount of air is required, the ISC valve 26 is moved in the direction of contraction to widen the space 27 and increase the amount of air entering.
In order to narrow down the air amount, the ISC valve 26 is moved in the extending direction to fill the space 27 with the ISC valve, and the amount of air entering is reduced to maintain the idle state.

Also, a shift position sensor (not shown) as a means for detecting whether the shift position state of the engine 10 in the gear box 37 is forward, neutral or reverse is disposed near the shift link mechanism described above. A signal corresponding to the shift position (that is, forward, neutral, reverse) operated via the signal line f is output to the ECU 30 to detect the engine load.
Also, a crank angle sensor 36 functioning as an engine speed detecting means for detecting the engine speed is arranged near the flywheel 28 attached via the crankshaft 5, and a crank angle signal is transmitted via a signal line g. Is sent to the ECU 30.
The ECU 30 calculates the engine speed (engine speed NE) from the output of the crank angle sensor 36.
Further, the engine stop switch 16 at the boat operator's seat 4 described above is switched on when the operator requests to stop the engine, and the switch-on information is output to the ECU 30 via the signal line h.

The operation of the fuel injection control system of the engine 10 will be described with reference to FIGS. 1 and 2.
The crankshaft 5 is rotated by manually pulling the recoil starter 15, and power is generated by the generator 44 that is driven by the rotation of the crankshaft 5. The generated electric power is supplied to the injector 23, the spark via the ECU 30. The plug 24 and the ISC valve 26 are supplied.
The ECU 30 drives the injector 23, the spark plug 24, and the ISC valve 26 based on the fuel supply amount, ignition timing, and required air amount calculated in advance, and starts the engine stably.
When the engine is stopped, the engine stop switch 16 is turned on, and the injector 23 and the spark plug 24 are stopped after a predetermined delay time (for example, 500 ms), whereby the rotation of the crankshaft 5 is stopped and the generator 44 generates power. The ECU 30 stops.

Next, based on the flowchart shown in FIGS. 3-7, the detail of the process which controls the memory | storage to EEPROM performed by ECU30 is demonstrated.
FIG. 3 is a flowchart showing the entire EEPROM storage control process (that is, a process for controlling information storage in the EEPROM).
In FIG. 3, step S301 is an engine stop switch determination process for determining whether the engine stop switch 16 is on or off.
Step S302 is an engine stop process for stopping the operation of the injector 23 and the spark plug 24 in accordance with the on / off state of the engine stop switch 16.
That is, in step S302, the on information of the engine stop switch 16 determined in step S301 is reflected in the engine operation control after a certain time, and the engine is stopped.
Step S303 is an EEPROM write process <1> for writing engine operation information such as the operation time and the number of shifts (that is, the number of times of changing the shift position) according to the state of the engine stop switch 16.
Step S304 is an EEPROM writing process <2> for writing failure information and the like in response to the occurrence of an event such as the occurrence of a failure.

FIG. 4 is a flowchart for determining the operating state (ON / OFF) of the engine stop switch.
In step S401, the engine stop switch is turned on / off, and if it is on, step S402 is executed. If it is off, step S404 is executed.
In step S402, if the on state of the engine stop switch 16 has elapsed, for example, 500 ms, step S403 is executed.
If 500 ms has not elapsed, step S404 is executed.
In step S403, since the engine stop switch has been turned on for 500 ms, the engine stop flag is set (that is, the engine stop flag is set to “1”), and the engine is stopped.
In step S404, since the engine stop switch 16 is off or less than 500 ms from on, the engine stop flag is cleared so that the engine 10 is not stopped. (That is, the engine stop flag is set to “0”),
Note that 500 ms is a value that anticipates the time required for writing to the EEPROM, and is set as a delay time that does not give the user a sense of incongruity. This set time can be arbitrarily set by the ECU 30.

FIG. 5 is a flowchart showing engine stop processing.
In step S501, the engine stop flag is set, and if it is set (that is, the engine stop flag is “1”), steps S502 and S503 are executed. If it is clear (that is, the engine stop flag is “0”), the process ends.
In step S502, the injector 23 is stopped to stop the engine.
In step S503, the spark plug 24 is stopped to stop the engine.

FIG. 6 is a flowchart of the EEPROM writing process <1> (collective).
Step S601 determines whether, for example, 10 s has elapsed since the previous writing in order to prevent the same information from being written to the EEPROM many times. If 10 s has elapsed, step S602 is executed. If 10 seconds have not elapsed, the process ends.
In step S602, the battery voltage is determined. When the battery voltage is low (less than 9V), it is determined that the ECU power supply is unstable, and the process ends.
If the battery voltage is a normal voltage (9 V or more), step S603 is executed.

In step S603, it is determined whether or not the engine stop switch 16 has been operated (OFF → ON). If it has been operated, step S604 is executed. If there is no change in the operating state of the engine stop switch, the process ends.
In step S604, EEPROM writing of engine operation information is performed.
The engine operation information stores the following operation information in order to grasp the operation (use) state of the engine in the market.
* Examples of engine operation information ・ Operating time ・ Number of sudden accelerations ・ Number of fuel cuts ・ Number of shifts ・ Minimum / maximum atmospheric pressure ・ Minimum / maximum intake air temperature ・ Number of starts per wall temperature

FIG. 7 is a flowchart of the EEPROM writing process <2> (individual).
In step S701, the occurrence of a failure such as a sensor failure is detected, and step S702 is executed when a failure is detected. When no failure is detected, step S703 is executed.
In step S702, the EEPROM related failure information is written.
In step S703, occurrence of a warning (warning) such as overheating is detected, and step S704 is executed when a warning is detected.
If no warning is detected, the process ends.
In step S704, the warning related information is written into the EEPROM.

Next, buzzer stop processing using the on / off operation of the engine stop switch in a state where the engine is not stopped will be described based on the flowchart shown in FIG.
In step S801, the engine stop switch 16 is turned off → on, and if off → on, step S802 is executed.
If it is off, step S805 and subsequent steps are executed.
In step S802, if the count value of an operation counter (not shown) that counts the number of operations of the engine stop switch 16 is 0 (first time), step S803 is executed, and then step S804 is executed. If the count value of the operation counter is not zero (second and subsequent times), step S804 is executed.
The operation counter is provided in the ECU 30.

In step S803, since the operation counter is the first operation, the operation counter initialization timer is set to 500 ms, for example.
In step S804, the operation counter is updated (+1).
In step S805, if the operation counter initialization timer has passed a set timer time (for example, 500 ms), step S806 is executed.
In step S806, since the operation counter initialization timer has passed a set time (for example, 500 ms), the operation counter is cleared (0 times).
In step S807, step S808 is executed when the count value of the operation counter exceeds 3, for example. If the count value is 3 or less, the process ends.
In step S808, the buzzer stop process is performed because the engine stop switch 16 has been switched from OFF to ON more than three times during a set time (for example, 500 ms).

The buzzer is used to notify the occurrence of a failure, a warning, the oil change timing, etc., and is provided in the vicinity of the maneuvering seat 4.
The flowchart of FIG. 8 shows an example in the case where it is desired to stop the state where the buzzer is already sounding.
FIG. 8 shows that the buzzer is stopped when the number of operations of the engine stop switch is detected three times.
Although the buzzer stop is described in FIG. 8, the blinking of the LED may be stopped, the maintenance information may be initialized (that is, the content stored in the ECU may be the same as that at the time of shipment), or the like.
In addition, the number of times the operation counter is set may be set so that the user does not feel uncomfortable.

As described above, the storage control device for an engine according to the present embodiment includes an operation state detection unit (crank angle sensor 36) for detecting the operation state of the engine 10 and an engine stop unit (engine) for stopping the operation of the engine 10. A stop switch 16), power generation means (generator 44) for generating power by rotating the crankshaft 5 of the engine 10, engine start means (recoil starter 15) for starting the engine manually. This is a storage control device for an engine that does not have a battery equipped with an operation state storage / control means (ECU 30) that is started by the generated voltage generated by the power generation means (generator 44) and stores and controls the operation state of the engine 10. And
The operation state storage / control means is configured to determine whether the engine stop switch 16 that is the engine stop means is on / off during the operation of the engine 10 (step S301), and the determined on / off information of the engine stop switch 16 is constant. A function to be reflected in the operation control of the engine 10 after a time (step S302), a function to start writing to the EEPROM using on / off information of the engine stop switch 16 (step S303), and individual functions such as failure and warning It has a function (step S304) for storing only the individual important information generated when the important information is generated at the time of occurrence.

In the engine storage control device according to the present embodiment, the engine is started by human power and the ECU is started by its own generated power. Therefore, the timing of the stable power state for storing information in the EEPRPM is Only while driving.
When writing to the EEPROM every predetermined time (for example, every 2 minutes) while the engine is running, if there is a large amount of information, the probability that it overlaps with the timing to stop the engine increases, and there is no power supply during writing to the EEPROM. There is a possibility that EEPROM flash occurs and the reliability of data is lost.
However, in the present embodiment, the timing at which the user stops the engine (that is, the timing at which the engine stop switch is turned on) is detected, and the EEPROM write processing is performed using that timing. It is possible to prevent the timing for storing information from overlapping, and to obtain a stable writing timing to the EEPROM. Therefore, an effective memory timing can be provided for an engine not equipped with a battery.

Further, the operation state storage / control means of the engine storage control device according to the present embodiment starts from the start of the engine 10 at the timing when the engine stop switch 16 is turned on after the operation state of the engine 10 is stabilized after activation. The function of storing the operation information obtained until the stop and the operation information of the engine 10 stored after the next start after stopping the engine 10 after securing the writing time to the EEPROM while the operation state of the engine 10 is stable Has a function to enable normal use.
After the information is stored in the EEPROM, the power supply is stopped at the same time as the engine is stopped. However, according to the present embodiment, the information is stored before the engine is stopped. Information becomes available. It is effective for storing a large amount of information such as driving information.

Further, the operation state storage / control means of the engine storage control device according to the present embodiment allows the engine to stop continuously within a preset EEPROM write time (for example, 500 ms) while the engine 10 is in operation. When the switch 16 is turned on / off, the engine 10 is not stopped.
According to the present embodiment, the engine is not stopped only by pressing the engine stop switch. For example, the engine does not stop unless the engine stop switch is continuously pressed for 500 ms or longer.
Once the engine is stopped, the power supply is lost and nothing can be done. In this embodiment, the engine will not stop even if the engine stop switch is pressed for a short time during engine operation. Is possible.

Further, the operation state storage / control means of the engine storage control device according to the present embodiment stores the operation information of the engine 10 when the continuous engine stop switch 16 that does not stop the engine 10 is on / off. During this time, the engine stop switch 16 has a function of using on / off information as an input for engine control.
Usually, since the engine of an outboard motor is small, the ECU generally has a small number of inputs. However, according to the present embodiment, this function (that is, a continuous engine stop switch that does not stop the engine). Increased by one input by using the engine stop switch on / off information as input for engine control while storing engine operation information in the on / off state Equivalent effect is obtained. For example, it is possible to stop the buzzer sound and stop the LED driving without increasing the number of input terminals of the ECU.

  The present invention is capable of normally storing information useful for engine maintenance, information useful for development, and the like even in an engine of an outboard motor not equipped with a battery, and is capable of providing appropriate storage information to a user. Useful for time difference sources of equipment.

5 Crankshaft 10 Engine 12 Throttle lever 15 Recoil starter (engine starter)
16 Engine stop switch 30 ECU
36 Crank angle sensor (operating state detecting means) 44 Generator (power generating means)

Claims (8)

Operating state detecting means for detecting the operating state of the engine, engine stopping means for stopping the operation of the engine, power generating means for generating electric power by rotationally driving the crankshaft of the engine, and starting the engine manually An engine storage control device that is not equipped with an engine starting means and a battery equipped with an operation state storage / control means that starts and starts the operation by the generated voltage generated by the power generation means, and stores and controls the operation state of the engine,
The operating state storage / control means is:
A function of determining on / off of an engine stop switch which is the engine stop means during operation of the engine;
A function of reflecting the determined on / off information of the engine stop switch to the operation control of the engine after a predetermined time;
A function of starting writing to the EEPROM using on / off information of the engine stop switch;
A storage control device for an engine, having a function of storing only the individual important information generated when individual important information such as a failure or a warning occurs. The operating state storage / control means is:
A function of storing the operation information obtained from the start of the engine to the stop at the timing when the engine stop switch is turned on after the operating state of the engine is stabilized after the start;
The engine was stopped after securing the writing time to the EEPROM in a stable operation state of the engine, and the engine operation information stored after the next start was normally used. The storage control device for an engine according to claim 1. The operating state storage / control means is:
2. The engine has a function of not stopping the engine by continuously turning on / off the engine stop switch 16 within a preset write time to the EEPROM during operation of the engine. Or a storage control device for an engine according to 2; The operating state storage / control means is:
A function of using the engine stop switch on / off information as an input for engine control while storing the engine operation information when the engine stop switch is continuously on / off without stopping the engine. The storage control device for an engine according to claim 3, further comprising: An engine memory control method for an outboard motor that stores and controls the operating state of the engine without battery.
Determining on / off of an engine stop switch during operation of the engine;
Reflecting the determined on / off information of the engine stop switch to the operation control of the engine after a predetermined time;
Starting writing to the EEPROM using on / off information of the engine stop switch;
A storage control method for an engine, comprising a step of storing only the individual important information generated when individual important information such as a failure or a warning is generated. After starting, after the operating state of the engine is stabilized, the operation information obtained from the start of the engine to the stop at a preset timing is stored,
The engine is stopped after securing a time for writing to the EEPROM in a stable operation state of the engine, and the engine operation information stored after the next start can be normally used. The engine storage control method according to claim 5.   7. The engine according to claim 5, wherein the engine is not stopped by continuously turning on / off the engine stop switch within a preset time for writing to the EEPROM during operation of the engine. Engine memory control method.   When the engine stop switch is continuously turned on / off without stopping the engine, the engine stop switch on / off information is used as an input for engine control while the engine operation information is stored. The engine storage control method according to claim 7.

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