JP2002155838A - Engine control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the electric power to a fuel injection device without unnecessarily driving a cell motor, when a battery capacity is lowered. SOLUTION: A driving start necessary torque TST necessary for rotating an engine at a self-driving rotation speed is calculated using a lubricating fluid temperature, a cell motor generation torque TCM is calculated from a battery voltage, and when the cell motor generation torque TCM drives and does not exceed the necessary torque TST or more, the driving start of the engine by the cell motor is inhibited. The voltage lowering quantity during operation of the cell motor is calculated, and when the voltage value obtained by counting the voltage lowering quantity in the battery voltage is a prescribed value or less for continuously driving the cell motor, the starting of the operation of the engine by the cell motor is inhibited. The inhibition is displayed so as to make a passenger recognize it and power feed to large-power electric devices such as a headlight is made to stop. When the engine rotation speed is the prescribed rotation speed or more, the fuel is injected and ignited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine control device for controlling an engine, and is particularly suitable for controlling an engine having a fuel injection device for injecting fuel.

[0002]

2. Description of the Related Art In recent years, as fuel injectors called injectors have become widespread, it has become easier to control the timing of fuel injection and the amount of injected fuel, that is, the air-fuel ratio, to achieve higher output, lower fuel consumption, and cleaner exhaust gas. Can be promoted. Control of fuel injection is generally performed using an electronic processing unit such as a microcomputer, for example.

[0003]

As is well known, a large amount of electric power is required to drive a starter motor to start an engine that is not operating. If the starter motor is driven when the capacity of the battery is low, there is a shortage of electric power for driving an electronic device such as a fuel injection device, and as a result, the engine may not be able to start operation. In particular, since the battery of a motorcycle is originally small in capacity due to its size limitation, the power tends to be insufficient when the engine is not operating, and there is a high possibility that the engine cannot be started.

The present invention has been developed in order to solve the above-mentioned problems, and it is possible to prevent a shortage of electric power supplied to a fuel injection device or the like due to unnecessary driving of a starter motor, and to prevent an engine from being pushed or kick-started. It is an object of the present invention to provide an engine control device capable of starting operation of a vehicle.

[0005]

An engine control device according to a first aspect of the present invention calculates a torque required to start an engine that is not operating, and calculates a torque required to start an engine operation. Means, battery voltage detection means for detecting the voltage of the battery, and cell motor generated torque calculation means for calculating the generated torque of the cell motor from the battery voltage detected by the battery voltage detection means,
When the generated torque of the starter motor calculated by the starter motor generated torque calculation unit is equal to or less than the engine operation start required torque calculated by the engine operation start required torque calculation unit, the operation start of the engine by the starter motor is prohibited, Cell start prohibiting means for performing at least one of display of prohibition of operation start of the engine by the cell motor is provided.

According to another aspect of the present invention, there is provided an engine control device for calculating a torque required to start an operation of an engine which is not operating, and a torque calculating means for starting the engine, and detecting a voltage of the battery. Battery voltage detecting means, a voltage drop calculating means for calculating a voltage drop amount of the battery voltage when the starter motor is driven, and a battery voltage detected by the battery voltage detecting means, and the voltage drop calculating means calculating the battery voltage. At least one of prohibiting the start of the engine by the starter motor and displaying the prohibition of the start of the engine by the starter motor when the battery voltage in consideration of the voltage drop amount is equal to or lower than a predetermined value. And a cell start prohibiting means for performing the operation.

According to a third aspect of the present invention, there is provided an engine control device for calculating a torque required for starting an operation of an engine which is not operating, a torque calculating means for starting the engine, and detecting a voltage of the battery. Battery voltage detecting means, a cell motor generated torque calculating means for calculating the generated torque of the cell motor from the battery voltage detected by the battery voltage detecting means, and a voltage drop amount of the battery voltage when the cell motor is driven is calculated. When the generated torque of the starter motor calculated by the voltage drop amount calculation means and the starter motor generated torque calculation means is equal to or less than the engine operation start required torque calculated by the engine operation start required torque calculation means, or when the battery voltage is detected. Calculated by the voltage drop amount calculating means to the battery voltage detected by the means. When the battery voltage in anticipation of the pressure drop amount is equal to or lower than a predetermined value, a cell for prohibiting the start of operation of the engine by the cell motor or displaying at least one of prohibition of operation start of the engine by the cell motor is displayed. And a start prohibiting means.

According to a fourth aspect of the present invention, in the engine control apparatus according to the third aspect of the present invention, the generated torque of the starter motor calculated by the starter motor generated torque calculating means is used to calculate the engine operation start necessary torque. Engine operation start required torque calculated by the means,
When the battery voltage detected by the battery voltage detecting means and the battery voltage in view of the voltage drop amount calculated by the voltage drop amount calculating means are equal to or higher than a predetermined value and the cell switch is operated, the cell motor A driving means for driving the cell motor.

According to a fifth aspect of the present invention, there is provided an engine control device comprising: an engine speed detecting means for detecting an engine speed; and a cell motor driving means for driving a cell motor when a cell switch is operated. When the engine speed detected by the engine speed detecting means when the cell motor is driven by the cell motor driving means is equal to or less than a predetermined value, the starting of the engine by the cell motor is prohibited, or Cell start prohibition means for performing at least one of display of prohibition of engine operation start is provided.

The engine control device according to a sixth aspect of the present invention includes a battery voltage detecting means for detecting a battery voltage, a cell motor driving means for driving a cell motor when a cell switch is operated, and When the battery voltage detected by the battery voltage detecting means when the cell motor is driven by the cell motor driving means is equal to or less than a predetermined value, the starting of the engine by the cell motor is prohibited, or the starting of the engine by the cell motor is prohibited. Is displayed.

In the engine control apparatus according to a seventh aspect of the present invention, the engine speed detecting means for detecting the engine speed, the battery voltage detecting means for detecting the battery voltage, and the cell switch are operated. A cell motor driving means for driving a cell motor when the engine rotation speed detected by the engine rotation speed detection means when the cell motor is driven by the cell motor driving means is equal to or less than a predetermined value, or When the battery voltage detected by the battery voltage detecting means when the cell motor is driven by the cell motor driving means is equal to or lower than a predetermined value, the starting of the engine by the cell motor is prohibited, or the starting of the engine by the cell motor is started. Cell start to display at least one of prohibition It is characterized in that a stop means.

According to an eighth aspect of the present invention, in the engine control apparatus according to the fifth to seventh aspects, a flag is set when the self-motor is driven by the self-motor driving means, and the engine is operated. A flag setting means for resetting a flag when the flag is set, wherein the cell start prohibiting means starts the operation of the engine by the cell motor even when the flag is set before driving the cell motor by the cell motor driving means. Or prohibiting the start of operation of the engine by the self-motor is displayed.

According to a ninth aspect of the present invention, the engine control device according to the eighth aspect of the present invention further comprises a battery voltage detecting means for detecting a battery voltage, and the cell start prohibiting means includes a battery voltage detecting means. When the battery voltage detected by the detecting means is equal to or higher than a predetermined value, the apparatus further comprises flag resetting means for resetting the flag.

According to a tenth aspect of the present invention, there is provided an engine control device comprising: a cell motor driving means for driving a cell motor when a cell switch is operated; a cell motor output detecting means for detecting an output of the cell motor; When the switch is operated and there is no cell motor output detected by the cell motor output detecting means, at least one of prohibiting the start of the engine by the cell motor and displaying the prohibition of the operation start of the engine by the cell motor. And a cell start prohibiting means for performing the above operation.

The engine control device according to claim 11 of the present invention according to claim 10 further comprises a battery voltage detecting means for detecting a battery voltage, wherein the cell start prohibiting means includes When the battery voltage detected by the detecting means is equal to or higher than a predetermined value,
Cell start prohibition canceling means for prohibiting the start of operation of the engine by the cell motor or canceling the display thereof is provided.

According to a twelfth aspect of the present invention, in the engine control apparatus according to the first to eleventh aspects, the cell start prohibiting means performs a power saving process. . Further, the engine control device according to claim 13 of the present invention provides the engine control device according to any of claims 1 to 1.
In the invention of the second aspect, the cell start prohibiting means prohibits the start of operation of the engine by the cell motor or cancels the display thereof when the engine is operated.

According to a fourteenth aspect of the present invention, in the engine control apparatus according to the first to thirteenth aspects, when the engine is not operated and the engine speed is equal to or higher than a predetermined speed, An engine operation starting means for injecting fuel from the fuel injection device and igniting the ignition device is provided.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is a schematic configuration showing an example of an engine for a motorcycle and a control device thereof. The engine 1 is a four-cylinder four-stroke engine, and includes a cylinder body 2, a crankshaft 3, a piston 4, a combustion chamber 5, an intake pipe 6, an intake valve 7,
An exhaust pipe 8, an exhaust valve 9, an ignition plug 10, and an ignition coil 11 are provided. A throttle valve 12 that opens and closes in accordance with the accelerator opening is provided in the intake pipe 6.
An injector 13 is provided as a fuel injection device. The injector 13 is connected to a filter 18, a fuel pump 17, and a pressure control valve 16 provided in a fuel tank 19. The engine 1 is a so-called independent intake system, and the injector 13 is provided in each intake pipe 6 of each cylinder. A starter motor 14 for starting operation of the engine 1 is connected to a flywheel connected to the crankshaft 3.

The operating state of the engine 1 is controlled by an engine control unit 15. And
As means for detecting the control input of the engine control unit 15, that is, the operating state of the engine 1, a crank angle sensor 20 for detecting the rotation angle of the crankshaft 3, that is, the phase, the temperature of the cylinder body 2 or the cooling water temperature, A cooling water temperature sensor 21 for detecting the temperature of the engine body, an exhaust air-fuel ratio sensor 22 for detecting the air-fuel ratio in the exhaust pipe 8, a throttle opening sensor 23 for detecting the engine load from the opening of the throttle valve 12,
An intake pipe pressure sensor 24 for detecting an intake pipe pressure in the intake pipe 6, an intake temperature sensor 25 for detecting a temperature in the intake pipe 6, that is, an intake temperature, a lubricating oil temperature sensor 26 for detecting a lubricating oil temperature, A battery temperature sensor 27 that detects the temperature of the battery 30 and a cell switch 32 that is an operation switch for driving the starter motor 14 are provided. Then, the engine control unit 15 inputs detection signals of these sensors, and outputs the fuel pump 17,
Pressure control valve 16, injector 13, ignition coil 1
1. Output a control signal to the starter motor 14 and the display device 31. The display device 31 is provided in the vicinity of the steering head together with meters (not shown).

The engine control unit 15
Are provided with an arithmetic processing unit such as a microcomputer (not shown) and a driver for driving the various actuators and devices described above. Therefore,
The engine control unit 15 is supplied with electric power from a battery 30 to an arithmetic processing unit such as a microcomputer or a driver. The arithmetic processing unit in the engine control unit 15 has a function of detecting the voltage of the battery 30.

The arithmetic processing unit in the engine control unit 15 performs various arithmetic processes, the main ones of which are the control of the fuel injection amount and fuel injection timing from the injector 13 and the control of the ignition coil 11. This is ignition timing control. For the fuel injection amount and the fuel injection timing, for example, a target air-fuel ratio is set from the engine speed, the throttle opening, etc., and at the same time, the intake air amount is detected, calculated or estimated, and this intake air amount is divided by the target air-fuel ratio. To calculate the required fuel amount. In this embodiment, since the fuel is not injected directly into the cylinder, but is injected into the intake pipe, for example, the fuel adheres to the intake pipe or flows into the cylinder along the intake pipe. Since the attached fuel evaporates and is sucked into the cylinder, the fuel injection amount and the fuel injection timing are set using a model that assumes such a situation and correction based on learning. Regarding the ignition timing, for example, it is determined whether importance is placed on efficiency or torque based on the throttle opening, and the ignition timing is set so that the required output characteristic is achieved with the target air-fuel ratio set as described above. Set.

Further, in this arithmetic processing unit, operation start control of an engine that is not operating is also performed. FIG. 2 is a flowchart showing a calculation process for the engine start control. This arithmetic processing is performed for a predetermined control time ΔT
It is executed by a timer interrupt every (for example, 10 msec.). It should be noted that, although no particular communication step is provided in the arithmetic processing, information obtained in the arithmetic processing is stored in the storage device as needed, and information necessary for the arithmetic processing is read from the storage device as needed.

In this calculation process, first, in step S1,
In accordance with the individual arithmetic processing performed in the same step, for example, it is determined whether or not the engine is not operating, for example, because the ignition coil is not energized. If the engine is not operating, the process proceeds to step S2. Otherwise, the process moves to step S3. In step S2, it is determined whether or not the engine speed obtained from the rotation angle of the crankshaft is equal to or higher than a predetermined speed according to the individual calculation process performed in step S2. If the number is equal to or more than the number, the process proceeds to step S4.
The predetermined rotation speed indicates a rotation speed equal to or higher than the minimum rotation speed at which the engine 1 continues to operate if fuel is injected from the fuel injection device 13 and the ignition plug 10 is ignited.

In step S5, the temperature from each of the temperature sensors is read in accordance with the individual arithmetic processing performed in step S5, and the process proceeds to step S6. In step S6, the engine operation start required torque T _ST required to start the engine is calculated in accordance with the individual calculation processing performed in step S6, and then step S6 is performed.
Move to 7. This engine operation start required torque T
_ST is a torque for driving the starter motor 14 to maintain the engine speed at or above a predetermined speed.
The friction torque of the sliding portion, the friction torque due to the viscosity of the lubricating oil, and the like can be mentioned. Particularly, the viscosity of the lubricating oil is strongly dependent, and the viscosity of the lubricating oil depends on the temperature.
For example, it can be obtained by a table or map search using the lubricating oil temperature as a parameter. In this embodiment, since the throttle valve 12 is provided in the intake pipe 6, the torque required for starting the engine operation when the throttle opening is zero is employed. However, in an engine having a mechanism for adjusting the intake passage, The effect of the opening degree of the intake passage when the operation of the engine is started may be considered.

In step S7, the battery 30
Then, the process proceeds to step S8. At step S8, according to each individual arithmetic process to be executed in the step, to calculate the battery capacity (capacity) from the battery voltage read in the step S7, the energization current and the starter motor generated torque T _CM to the starter motor 14 After the calculation, the process proceeds to step S9. As for the battery capacity, the charging capacity can be calculated from the integration of the battery charging / discharging current and the voltage value, so that the current value and the derived torque to the cell motor can be calculated therefrom based on the battery temperature and the resistance value of the cell motor.

At the step S9, at the step S8
Self-motor generated torque T calculated by _cmIs the step S
Required engine operation start torque T calculated in 6_STIs over
It is determined whether or not the torque T_cmBut d
Engine operation start required torque T _STIf it is more than
The process proceeds to step S10, otherwise, step S1
Move to 1.

In step S10, the amount of voltage drop during driving of the starter motor is calculated according to the individual arithmetic processing performed in step S10, and then the process proceeds to step S12.
In step S12, a battery voltage is calculated in accordance with the individual calculation process performed in step S7 in consideration of the voltage drop amount calculated in step S11 with respect to the battery voltage read in step S7. It is determined whether or not the battery voltage that allows for the amount is equal to or higher than a predetermined voltage value sufficient for normal operation of the electronic device such as a fuel injection device, and the battery voltage that allows for the voltage drop amount is equal to or higher than the predetermined value. If so, the process proceeds to step S13; otherwise, the process proceeds to step S11.

In step S13, the cell switch 3
2 is ON or not, and the cell switch 32
If N, the process proceeds to step S14; otherwise, the process returns to the main program. Step S
In step 14, a cell motor drive command is output according to the individual arithmetic processing performed in the same step.
Move to

In step S15, a fuel injection command is output in accordance with the individual arithmetic processing performed in step S15, and the process proceeds to step S16. Step S1
In step 6, according to the individual arithmetic processing performed in the step, an ignition command is output, and then the process returns to the main program. On the other hand, in the step S11, the cell start prohibition process, its display and the power saving process are performed according to the individual calculation process performed in the step, and then the process returns to the main program. Here, the cell start prohibition processing is to prohibit driving of the engine by driving the cell motor, and prohibiting driving of the cell motor in terms of control only. Also,
Displaying cell start prohibition means outputting a command to the display device 31 to indicate that cell start is currently prohibited. The power saving process is to stop supplying power to electrical components that require a large amount of power, such as headlights. In addition, a message for starting the operation of the engine by a method other than the start of the engine operation by driving the cell motor may be added to the display of the cell start prohibition, for example.

In step S4, a fuel injection command is output in accordance with the individual arithmetic processing performed in step S4, and the process proceeds to step S17. In step S17, an ignition command is output and the process returns to the main program according to the individual arithmetic processing performed in step S17. In step S3, the cell start prohibition process and its display and power saving process are canceled in accordance with the individual calculation processes performed in the step, and then the process returns to the main program.

According to this calculation processing, when the crankshaft 3 of the engine 1 that is not operating is stopped, the flow proceeds from step S1 to step S2 through step S2.
Then, various temperatures are read, and then the process proceeds to step S
Move to 6. In step S6, for example, a lubricating oil temperature as a parameter, the engine operation start required torque T _ST to maintain the rotational speed sufficient to operating starting the engine 1 is calculated by the starter motor 14. Then after it is loaded the battery voltage goes to step S7, the energization current and the starter motor generated torque T _CM from the battery capacity to the starter motor 14 is calculated in step S8.

[0032] Then, a determination cell motor torque T _CM in the next step S9, whether it is the engine operation start required torque T _ST above, the cell motor torque T _CM is the engine driving start the required torque T _ST or In this case, the process proceeds to step S10 to calculate the amount of voltage drop during the driving of the cell motor, and in the next step S12, it is determined whether or not the battery voltage that allows for this voltage drop is equal to or higher than a predetermined value. If the battery voltage in anticipation of the voltage drop is equal to or higher than the predetermined value, the process proceeds to step S13. Here, when the cell switch 32 is ON, step S1 is executed.
In step S4, a drive command for the starter motor 14 is output, then a fuel injection command is output in step S15, and then an ignition command is output in step S16.

[0033] That is, the cell motor torque T _CM obtained from the battery voltage is not less engine operation starting required torque T _ST above, and in cell motor drive is also battery voltage is higher than a predetermined value, i.e. sufficient to engine 1 can be operated starting When it is determined that the driving of the starter motor 14 can be continued for more than the time and the cell switch 32 is ON, the starter motor 14 is driven, fuel is injected, and the ignition plug 10 is ignited. Therefore, it is possible to reliably start the engine 1 without unnecessarily consuming battery power or not being able to start the engine.

Further, and when the starter motor torque T _CM is not the engine operation start required torque T _ST above, when the battery voltage in anticipation of the amount of voltage drop in the starter motor drive is less than the predetermined value, the process proceeds to step S11 , Cell start prohibition processing, its display, and power saving processing. Accordingly, unnecessary power consumption is not performed, and it is possible to prevent a shortage of power supply to the fuel injection device or the like due to unnecessary driving of the starter motor 14, and the occupant can reduce the capacity of the battery 30. It can be recognized that the engine 1 has to be operated or started by a method other than the starter motor 14.

Also, even if the engine 1 is not operating,
If the engine rotation speed is equal to or higher than the predetermined rotation speed, that is, if the fuel is injected and the ignition plug 10 is ignited, if the engine rotation speed is equal to or higher than the rotation speed at which the operation is continued, the process proceeds from step S2 to step S4 and the fuel injection is performed. In order to output the ignition command in step S17, the engine is pushed when the engine is running at a predetermined speed or higher by the kick starter or when the vehicle is running with the clutch between the engine and the transmission engaged. When the engine is rotating, the engine can be automatically started.

When the engine is operating, the process proceeds from step S1 to step S3, in which the cell start prohibition process, the display thereof and the cancellation of the power saving process are performed, so that the capacity of the battery 30 is reduced by the operation of the engine. When it increases, the engine can be started again by the starter motor 14. As described above, step S6 of the calculation processing of FIG. 2 constitutes the engine operation start necessary torque calculation means of the present invention, and similarly, step S7 of the calculation processing of FIG. 2 constitutes the battery voltage detection means, and FIG. Step S8 of the arithmetic processing constitutes the starter motor generated torque calculating means, step S10 of the arithmetic processing of FIG. 2 constitutes the voltage drop amount calculating means, and step S9 of the arithmetic processing of FIG.
Steps S12 and S11 constitute a cell start prohibiting unit, steps S9 and S12 to S14 of the arithmetic processing in FIG. 2 constitute a cell motor driving unit, and steps S1, S2 and S4 of the arithmetic processing in FIG. Step S7 constitutes engine operation starting means.

Next, a second embodiment of the engine control device of the present invention will be described. The configuration of the vehicle according to this embodiment is the same as that of the first embodiment. In this embodiment, the arithmetic processing performed at the time of starting the operation of the engine includes:
The configuration shown in FIG. 2 has been changed to that shown in FIG. This arithmetic processing is also executed by the arithmetic processing unit in the engine control unit 15 by a timer interrupt for each predetermined control time ΔT. It should be noted that, although no particular communication step is provided in the arithmetic processing, information obtained in the arithmetic processing is stored in the storage device as needed, and information necessary for the arithmetic processing is read from the storage device as needed. Further, the starter driving flag F used during this arithmetic processing is:
Since the data is stored in the non-volatile memory, it is not reset even if the operation processing device such as a microcomputer is down.

In this calculation process, first, in step S21, as in step S1 of the first embodiment,
It is determined whether or not the engine is running according to the individual calculation processing performed in the same step. If the engine is not running, the process proceeds to step S22; otherwise, the process proceeds to step S23. . Step S
In step 22, as in step S2 of the first embodiment,
It is determined whether or not the engine speed is equal to or higher than a predetermined engine speed according to the individual calculation processing performed in the same step. If the engine speed is equal to or higher than the predetermined engine speed, the process proceeds to step S25. If not, step S4
Move to 1.

In step S41, as in step S12 of the first embodiment, the battery voltage is changed according to the individual arithmetic processing performed in step S12 so that the electronic device such as a fuel injection device operates normally. It is determined whether or not the voltage is equal to or higher than a sufficient predetermined voltage value. If the battery voltage is equal to or higher than the predetermined value, the process proceeds to step S42, and if not, the process proceeds to step S26.

In the step S44, the self-motor driving flag F is reset to "0", and then the process proceeds to the step S26. In step S26, it is determined whether or not the cell motor drive flag F is in a reset state of "0". If the cell motor drive flag F is in a reset state, the process proceeds to step S27. Shifts to step S34.

In step S27, the cell switch 3
2 is ON or not, and the cell switch 32
If N, the process proceeds to step S28; otherwise, the process returns to the main program. Step S
At 28, the self-motor driving flag F is set to "1", and then the flow shifts to step S29.

In step S29, as in step S14 of the first embodiment, a cell motor drive command is output in accordance with the individual arithmetic processing performed in step S14, and the process proceeds to step S30. In step S30, as in step S15 of the first embodiment, a fuel injection command is output in accordance with the individual arithmetic processing performed in step S15, and the process proceeds to step S31.

In step S31, as in step S16 of the first embodiment, an ignition command is output in accordance with the individual calculation processing performed in step S16, and the process proceeds to step S32. In step S32, it is determined whether or not the engine speed is equal to or higher than a predetermined speed, that is, whether or not the vehicle can be continuously operated, in the same manner as in step S22, in accordance with the individual calculation processing performed in step S32. If the engine speed is equal to or higher than the predetermined speed, the process proceeds to step S33; otherwise, the process proceeds to step S34.

At the step S33, at the step S33
Similarly to 41, according to the individual arithmetic processing performed in the same step, it is determined whether or not the battery voltage is equal to or higher than a predetermined voltage value sufficient to continuously drive the starter motor, for example, If the value is equal to or more than the predetermined value, the process proceeds to step S35, and if not, the process proceeds to step S34.

In step S35, it is determined that the engine 1 has started operation, the starter motor drive flag F is reset to "0", and the program returns to the main program. On the other hand, in step S34, as in step S11 of the first embodiment, the cell start prohibition process, its display, and power saving process are performed according to the individual calculation processes performed in step S11, and then the main program is executed. Return.

In the step S25, the first
As in step S4 of the embodiment, the process proceeds to step S36 after outputting the fuel injection command in accordance with the individual arithmetic processing performed in step S4. In step S36, similarly to step S17 of the first embodiment, an ignition command is output according to the individual arithmetic processing performed in step S17, and the process returns to the main program.

In step S23, since the engine 1 is running, the starter motor driving flag F is reset to "0", and the process proceeds to step S24.
In step S24, as in step S3 of the first embodiment, the cell start prohibition process, the display thereof, and the display and power saving process are canceled in accordance with the individual calculation process performed in step S3. Return to.

According to this calculation process, when the crankshaft 3 of the engine 1 that is not operating is stopped, the process proceeds from step S21 to step S41 via step S22, where the battery voltage is controlled by the cell motor. If the voltage is not equal to or higher than the predetermined voltage value sufficient for continuous driving, the process proceeds to step S26. If the self-motor driving flag F is reset, the process proceeds to step S27.
If the cell switch is OFF at this time, the process returns to the main program.

On the other hand, when the cell switch is in the ON state in the step S27, the cell motor drive flag F is set in a step S28, the process proceeds to the next step S14, and a drive command of the cell motor 14 is outputted, and then in a step S15 A fuel injection command is output, and then step S1
At 6, an ignition command is output. As a result, if the engine speed can be continued, that is, the engine speed is equal to or higher than the predetermined speed at which the engine 1 can be operated by itself, and the battery voltage is equal to or higher than the predetermined value required for driving the starter motor 14 for the time necessary for starting the operation of the engine 1. If the value is equal to or more than the value, the engine 1 has been or has been started. Therefore, in step S32, if the engine speed is equal to or higher than the predetermined speed at which the vehicle can operate on its own, and if the battery voltage is equal to or higher than the predetermined value sufficient to drive the starter motor 14 in step S33, the process proceeds to step S35. The cell motor drive flag F is reset.

On the other hand, the engine speed during driving of the cell motor is not equal to or higher than the predetermined rotation speed at which the self-sustaining operation is possible, or the battery voltage during driving of the cell motor cannot further drive the cell motor continuously. When the voltage is not equal to or higher than the predetermined voltage value, the operation start of the engine 1 by the starter motor 14 should be almost impossible. Therefore, in this embodiment, if the engine speed is not equal to or higher than the predetermined speed at which the engine can operate on its own in step S32, or if the battery voltage is not equal to or higher than the predetermined value enough to drive the starter motor 14 in step S33, step S34 Then, the cell start prohibition processing, its display and power saving processing are performed here. Accordingly, it is possible to further prevent a shortage of power supplied to the fuel injection device or the like due to unnecessary driving of the starter motor 14, and the occupant can increase the capacity of the battery 30 or use a method other than the starter motor 14. It can be recognized that the engine 1 has to be started.

Also, for example, the last time an attempt was made to start the operation of the engine 1 by the starter motor 14. At that time, the battery voltage was low or the battery capacity was low.
Cannot be started. However, from the determination in step S32 or step S33, step S34 is performed.
If, for example, the ignition switch is turned off before shifting to, the non-volatile memory stores the cell motor drive flag F set in step S28 as it is. Therefore, if an attempt is made to start the operation of the engine 1 by the starter motor 14 again without increasing the battery capacity, that is, while the battery voltage is low, the process proceeds from step S41 to step S2.
After step 6, the process proceeds to step S34, in which the cell start prohibition process, the display thereof, and the power saving process are performed.
Therefore, even in such a case, the starter motor 1
4 can be prevented from being inadequately supplied to the fuel injection device and the like due to unnecessary drive of
It can be recognized that the capacity of the battery 30 must be increased or the engine 1 must be started by a method other than the starter motor 14.

On the other hand, while the self-motor driving flag F set in step S28 is set and stored in the nonvolatile memory, the battery 30 is replaced, filled, or connected to another power source. If, for example, the battery voltage becomes equal to or higher than the predetermined value,
The process proceeds from step S41 to step S42 to reset the starter motor drive flag F. Therefore, the process returns from step S26 to step S27 and thereafter, and in this case, since the battery voltage is equal to or higher than the predetermined value, the engine operation can be started.

Also, even if the engine 1 is not operating,
If the engine rotation speed is equal to or higher than the predetermined rotation speed, that is, if the fuel is injected and the ignition plug 10 is ignited, and if the engine rotation speed is higher than the rotation speed at which the operation is continued, the process proceeds from step S22 to step S25 and the fuel injection Since the command is output and then the ignition command is output in step S36, the engine can be automatically started when the engine is rotating at a predetermined speed or more due to pushing or kick starter.

When the engine is running,
The process proceeds from step S21 to step S23 to reset the starter motor drive flag F, and then proceeds to step S23.
Since the cell start prohibition processing, the display thereof, and the cancellation of the power saving processing are performed at 24, when the capacity of the battery 30 increases due to the operation of the engine, the operation of the engine by the cell motor 14 can be started again.

As described above, the crank angle sensor 20 constitutes the engine speed detecting means of the present invention, and similarly, step S29 of the arithmetic processing of FIG. 3 constitutes the cell motor driving means, and the arithmetic processing of FIG. Steps S23, S28, and S35 constitute the flag setting means, and are performed in steps S32 and S3 of the arithmetic processing in FIG.
3. Step S34 constitutes a cell start inhibiting means,
Steps S21, S22, S25, and S36 of the calculation processing in FIG. 3 constitute an engine operation starting means, and steps S41 and S42 constitute a flag reset means.

Next, a third embodiment of the engine control device of the present invention will be described. The configuration of the vehicle according to this embodiment is the same as that of the first embodiment. In this embodiment, the arithmetic processing performed at the time of starting the operation of the engine includes:
The configuration shown in FIG. 2 has been changed to that shown in FIG. This arithmetic processing is also executed by the arithmetic processing unit in the engine control unit 15 by a timer interrupt for each predetermined control time ΔT. It should be noted that, although no particular communication step is provided in the arithmetic processing, information obtained in the arithmetic processing is stored in the storage device as needed, and information necessary for the arithmetic processing is read from the storage device as needed. Further, the starter driving flag F used during this arithmetic processing is:
Since the data is stored in the non-volatile memory, it is not reset even if the operation processing device such as a microcomputer is down.

In this calculation process, first, in step S51, as in step S1 of the first embodiment,
In accordance with the individual calculation processing performed in the same step, it is determined whether or not the engine is running. If the engine is not running, the process proceeds to step S52, and if not, the process proceeds to step S53. . Step S
At 52, similar to step S2 of the first embodiment,
It is determined whether or not the engine speed is equal to or higher than a predetermined engine speed according to the individual calculation processing performed in the same step. If the engine speed is equal to or higher than the predetermined engine speed, the process proceeds to step S54. If not, step S5
Move to 5.

In step S55, it is determined whether or not the cell start is currently inhibited or displayed to that effect according to the individual arithmetic processing performed in the step. If it is in the middle, the process proceeds to step S56, otherwise, step S56.
It moves to 57. In step S56, as in step S12 of the first embodiment, the battery voltage is, for example, equal to or higher than a predetermined voltage value sufficient to continuously drive the starter motor in accordance with the individual arithmetic processing performed in step S56. It is determined whether the battery voltage is present or not. If the battery voltage is equal to or higher than the predetermined value, the process proceeds to step S58; otherwise, the process returns to the main program.

In the step S58, the cell star is prohibited or the display to that effect is released according to the individual arithmetic processing performed in the step, and then the process proceeds to the step S57. In the step S57, the cell switch 32
It is determined whether it is N or not. If the cell switch 32 is ON, the process proceeds to step S59, and if not, the process returns to the main program.

In step S59, as in step S14 of the first embodiment, a cell motor drive command is output in accordance with the individual arithmetic processing performed in step S59, and the process proceeds to step S60. In step S60, it is determined whether or not the engine is rotating based on a signal from the crank angle sensor 20, that is, whether or not there is an output of the starter motor 14, in other words, whether or not the starter motor 14 is driving. If the engine is rotating, the process proceeds to step S61; otherwise, the process proceeds to step S61.
It moves to 62.

In step S51, as in step S15 of the first embodiment, a fuel injection command is output in accordance with the individual arithmetic processing performed in step S15, and the flow advances to step S63. In step S63,
As in step S16 of the first embodiment, the process returns to the main program after outputting an ignition command in accordance with the individual arithmetic processing performed in step S16.

On the other hand, in step S62, the first
Similar to step S11 in the embodiment, the cell start prohibition process, the display thereof, and the power saving process are performed according to the individual calculation process performed in the step, and then the process returns to the main program. In step S54, similarly to step S4 of the first embodiment, a fuel injection command is output in accordance with the individual calculation processing performed in step S4, and the process proceeds to step S64.

In step S64, as in step S17 of the first embodiment, an ignition command is output and the program returns to the main program in accordance with the individual arithmetic processing performed in step S17. In step S53, as in step S3 of the first embodiment, the cell start prohibition process and the display and power saving process described above are canceled according to the individual calculation process performed in step S53. Return to the main program.

According to this calculation process, when the crankshaft 3 of the engine 1 that is not operating is stopped, the process proceeds from step S51 to step S55 via step S52, where the cell start is prohibited or the cell start is prohibited. If the display is not being performed, the process proceeds to step S57. If the cell switch is OFF, the process returns to the main program.

On the other hand, when the cell switch is in the ON state in step S57, a drive command for the cell motor 14 is output in step S59. At this time, the starter motor 1
4 is driven and the engine 1 is rotating at the output,
The process proceeds from step S60 to step S61 to output a fuel injection command, and then outputs an ignition command in step S16.

On the other hand, even though the drive command to the starter motor 14 is output, the fact that the engine 1 is not rotating means that there is no output from the starter motor 14.
That is, since the starter motor 14 is not driven, the process proceeds from step S62 to step S62,
Here, the cell start prohibition processing, the display thereof, and the power saving processing are performed. Accordingly, it is possible to further prevent a shortage of power supplied to the fuel injection device or the like due to unnecessary driving of the starter motor 14, and the occupant can increase the capacity of the battery 30 or use a method other than the starter motor 14. It can be recognized that the engine 1 has to be started.

Further, even if the cell start is prohibited as described above or the fact is displayed,
If the battery voltage has become equal to or higher than the predetermined value by replacing the battery 30, filling the battery, or connecting to another power source, the process proceeds from step S55 to step S56.
Then, the process proceeds to step S58, where the inhibition of the cell start or the display indicating the inhibition of the cell start is released. Therefore, the process returns to step S57 and thereafter, and in this case, since the battery voltage is equal to or higher than the predetermined value, the engine operation can be started.

Further, even if the engine 1 is not operating,
If the engine speed is equal to or higher than the predetermined speed, that is, if the fuel is injected and the ignition plug 10 is ignited, and if the engine is rotating at a speed equal to or higher than the operating speed, the process proceeds from step S52 to step S54 and the fuel injection is performed. Since the command is output and then the ignition command is output in step S64, the engine can be automatically started when the engine is rotating at a predetermined speed or more due to pushing or kick starter.

When the engine is running,
Since the process shifts from step S51 to step S53, the cell start prohibition process and the display and cancellation of the power saving process are performed.
When the capacity of the motor has increased, the engine can be started again by the starter motor 14. As described above, the crank angle sensor 20 constitutes the engine speed detecting means of the present invention, and similarly, step S59 of the arithmetic processing of FIG. 4 constitutes the cell motor driving means, and step S53 of the arithmetic processing of FIG. Step S55 to step S58,
Step S62 constitutes the cell start prohibiting means.
Steps S51, S52, S54, and S64 of the arithmetic processing of FIG. 4 constitute the engine operation starting means, step S60 of the arithmetic processing of FIG. 4 constitutes the starter motor output detecting means, and step S5 of the arithmetic processing of FIG.
6. Step S58 constitutes a cell start prohibition canceling means.

In each of the above embodiments, based on the battery capacity, it is determined whether the start of the engine can be started by rotating the starter motor, whether the starter motor is driven in a predetermined state, or whether the starter motor itself is driving. Although the invention is limited to prohibiting the cell start and displaying the fact to the effect, since the most important thing is the capacity of the battery, for example, when the battery voltage is equal to or lower than a predetermined value, the cell start is prohibited or the cell start is prohibited. Displaying a message to the effect may be added to the precondition.

In each of the above embodiments, the forcible release of the cell start prohibition by the driver is not described. However, the fact that the driver can forcibly release the cell start prohibition by any means is a limitation of the present invention. Not to do. That is, while the present invention performs the prohibition of the cell start or displays the indication to that effect as described above, the vehicle is provided with a means for forcibly canceling the cell start, and if the driver operates the means, the prohibition of the cell start is performed. The release may be appropriately set in each vehicle. As means for forcibly canceling the cell start prohibition, for example, opening and closing the accelerator several times while the engine is not operating, or pressing the cell switch for several seconds or more may be considered.

In the above-described embodiment, the in-pipe injection type engine has been described in detail. However, the engine control device of the present invention can be similarly applied to a direct injection type engine. However, in a direct injection engine, since fuel does not adhere to the intake pipe, it is not necessary to consider this, and the calculation of the air-fuel ratio may be performed by substituting the total amount of injected fuel. In the above-described embodiment, a so-called multi-cylinder engine having four cylinders has been described in detail. However, the engine control device of the present invention can be similarly applied to a single-cylinder engine.

The engine control unit is
Various arithmetic circuits can be used in place of the microcomputer. For example, in the third embodiment, the rotation of the cell motor is detected, and the cell motor is driven by turning on the cell switch. However, when the cell motor does not actually rotate, the cell start is prohibited or a message to that effect is immediately displayed. It may be.

[0074]

As described above, according to the engine control apparatus of the first aspect of the present invention, the torque generated by the starter motor is calculated from the detected voltage of the battery, and the generated torque of the starter motor is used to calculate the engine operating speed. When the torque is equal to or less than the required start torque, the start of the engine operation by the cell motor is prohibited or the fact is displayed, so that the shortage of power supply to the fuel injection device and the like due to unnecessary driving of the cell motor is prevented. can do.

Further, according to the engine control device of the present invention, the amount of battery voltage drop when the starter motor is driven is calculated, and the amount of voltage drop is estimated in the detected battery voltage. When the battery voltage is equal to or lower than a predetermined value, the operation start of the engine by the starter motor is prohibited, or the fact is displayed.
Insufficient power supply to the fuel injection device and the like due to unnecessary driving of the cell motor can be suppressed.

According to the engine control device of the present invention, the torque generated by the starter motor is calculated from the detected voltage of the battery, and the generated torque of the starter motor is equal to or less than the torque required for starting the engine operation. When the battery voltage is calculated by calculating the amount of voltage drop of the battery voltage when the starter motor is driven, and when the detected battery voltage is equal to or less than a predetermined value in consideration of the voltage drop amount,
Since the start of operation of the engine by the cell motor is prohibited or the fact is displayed, shortage of power supply to the fuel injection device or the like due to unnecessary driving of the cell motor can be prevented.

According to the engine control apparatus of the present invention, the calculated torque generated by the starter motor is equal to or more than the required torque for starting the engine operation, and the detected battery voltage includes the amount of voltage drop. Since the battery motor is driven when the battery voltage is equal to or higher than a predetermined value and the cell switch is operated, the engine can be reliably started by the cell motor.

Further, according to the engine control device of the present invention, the cell motor is driven when the cell switch is operated, and when the engine speed at that time is equal to or less than the predetermined value, Since the start of operation of the engine by the cell motor is prohibited or the fact is displayed, shortage of power supply to the fuel injection device or the like due to unnecessary driving of the cell motor can be suppressed.

According to the engine control device of the present invention, the cell motor is driven when the cell switch is operated, and the cell motor is driven when the battery voltage at that time is lower than a predetermined value. In this case, the start of the operation of the engine is prohibited, or the fact is displayed. Therefore, it is possible to further prevent the shortage of power supply to the fuel injection device and the like due to unnecessary driving of the starter motor.

Further, according to the engine control device of the present invention, when the cell switch is operated, the starter motor is driven, and when the engine speed at that time is lower than the predetermined value, When the battery voltage at that time is equal to or lower than a predetermined value, the starting of the engine by the cell motor is prohibited or the fact is displayed so that the fuel injection device or the like by driving the cell motor unnecessarily further Shortage of power supply to the vehicle can be prevented.

According to the engine control apparatus of the present invention, the flag is set when the starter motor is driven, and the flag is reset when the engine is operating. When the flag is set before driving the starter motor, the operation start of the engine by the starter motor is prohibited, or the fact is displayed to that effect. In addition, it is possible to prevent a shortage of power supplied to the fuel injection device and the like due to unnecessary driving of the starter motor.

According to the ninth aspect of the present invention, the flag is reset when the detected battery voltage is equal to or higher than a predetermined value. When the battery is charged or connected to another power source, the operation of the engine can be started by the starter motor. Further, according to the engine control device of the present invention, when the cell switch is operated and there is no cell motor output detected by the cell motor output detection means, the operation start of the engine by the cell motor is prohibited, Alternatively, since the fact is displayed, when the engine cannot be started by the starter motor, shortage of power supply to the fuel injection device or the like due to unnecessary driving of the starter motor can be prevented.

Further, according to the engine control apparatus of the present invention, when the detected battery voltage is equal to or higher than a predetermined value, the operation start of the engine by the starter motor is inhibited or the display thereof is canceled. Therefore, when the battery is replaced, charged, or connected to another power source, the engine can be started by the starter motor.

According to the engine control device of the present invention, the fact that the start of operation of the engine by the starter motor is prohibited is displayed, so that the occupant increases the capacity of the battery. Alternatively, it can be recognized that the engine must be started by a method other than the starter motor. Further, according to the engine control device of the present invention, the start of the operation of the engine by the starter motor is prohibited or the fact is displayed and the power saving process is performed. For example, by stopping the power supply to the electrical components that consume large power, it is possible to prevent a shortage of the power supply to the fuel injection device and the like.

Further, according to the engine control apparatus of the present invention, the prohibition of the start of operation of the engine by the cell motor is released when the engine is operated, so that the capacity of the battery is increased by the operation of the engine. At times, the engine can be started again by the starter motor. According to the engine control device of the present invention, when the engine is not running and the engine speed is equal to or higher than the predetermined speed, fuel is injected from the fuel injection device, and the ignition device , It is possible to automatically start the engine by pushing or kick starter.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an engine for a motorcycle and a control device thereof.

FIG. 2 is a flowchart illustrating a first embodiment of a calculation process for starting an engine operation performed by the engine control device of the present invention.

FIG. 3 is a flowchart illustrating a second embodiment of a calculation process for starting an engine operation performed by the engine control device of the present invention.

FIG. 4 is a flowchart illustrating a third embodiment of a calculation process for starting an engine operation performed by the engine control device of the present invention.

[Explanation of symbols]

 1 is an engine 3 is a crankshaft 4 is a piston 5 is a combustion chamber 6 is an intake pipe 7 is an intake valve 8 is an exhaust pipe 9 is an exhaust valve 10 is a spark plug 11 is an ignition coil 12 is a throttle valve 13 is an injector 14 is a cell motor 15 The engine control unit 20 is a crank angle sensor (engine speed detecting means) 21 is a coolant temperature sensor 23 is a throttle opening sensor 24 is an intake pipe pressure sensor 25 is an intake temperature sensor 26 is a lubricating oil temperature sensor 27 is a battery temperature sensor 30 Is a battery 31 is a display device 32 is a cell switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02N 15/00 F02N 15/00 C

Claims (14)

[Claims] 1. An engine operation start required torque calculation means for calculating a torque required to start an operation of an engine which is not operating, a battery voltage detection means for detecting a battery voltage, and detection by the battery voltage detection means. A cell motor generated torque calculating means for calculating a generated torque of the cell motor from the battery voltage obtained, and an engine torque calculated by the engine motor start required torque calculating means calculated by the cell motor generated torque calculated by the cell motor generated torque calculating means. Cell start prohibiting means for prohibiting the start of operation of the engine by the cell motor when the torque is equal to or less than the required torque for operation start or displaying at least one of prohibiting the start of operation of the engine by the cell motor. An engine control device, characterized in that: 2. An engine operation start required torque calculation means for calculating a torque required for starting an operation of an engine which is not operating, a battery voltage detection means for detecting a voltage of a battery, and a battery when a starter motor is driven. A voltage drop amount calculating means for calculating a voltage drop amount of the voltage; and a battery voltage detected by the battery voltage detecting means, wherein a battery voltage in consideration of the voltage drop amount calculated by the voltage drop amount calculating means is equal to or less than a predetermined value. And a cell start prohibiting means for performing at least one of prohibiting the start of the engine by the starter motor and displaying the prohibition of the start of the engine by the starter motor. Engine control device. 3. An engine operation start necessary torque calculation means for calculating a torque required to start an operation of an engine which is not operating, a battery voltage detection means for detecting a battery voltage, and detection by the battery voltage detection means. From the obtained battery voltage, a cell motor generated torque calculating means for calculating the generated torque of the cell motor, a voltage drop amount calculating means for calculating a voltage drop amount of the battery voltage when the cell motor is driven, and the cell motor generated torque calculating means When the calculated generated torque of the starter motor is equal to or less than the required engine operation start torque calculated by the engine operation start required torque calculation unit, or when the battery voltage detected by the battery voltage detection unit is used, the voltage drop amount calculation is performed. If the battery voltage in anticipation of the voltage drop calculated by the means is below a predetermined value And a cell start prohibiting means for performing at least one of prohibiting the start of operation of the engine by the cell motor and displaying a message indicating prohibition of start of operation of the engine by the cell motor. apparatus. 4. The generated torque of the starter motor calculated by the starter motor generated torque calculation means is equal to or more than the required engine operation start torque calculated by the engine operation start required torque calculation means and detected by the battery voltage detection means. A cell motor driving means for driving the cell motor when the battery voltage in which the voltage drop amount calculated by the voltage drop amount calculation means is equal to or more than a predetermined value and the cell switch is operated; The engine control device according to claim 3, wherein: 5. An engine speed detecting means for detecting an engine speed, a cell motor driving means for driving a cell motor when a cell switch is operated, and a driving means for driving a cell motor by said cell motor driving means. When the engine speed detected by the engine speed detecting means is equal to or less than a predetermined value, at least one of prohibiting the start of operation of the engine by the cell motor or displaying a message prohibiting the start of operation of the engine by the cell motor. An engine control device comprising: a cell start prohibiting unit for performing either of the above. 6. A battery voltage detecting means for detecting a voltage of a battery, a cell motor driving means for driving a cell motor when a cell switch is operated, and the battery when the cell motor is driven by the cell motor driving means. When the battery voltage detected by the voltage detection means is equal to or lower than a predetermined value, at least one of prohibiting the start of the engine by the starter motor and displaying the prohibition of the start of the engine by the starter motor is performed. An engine control device characterized by the above-mentioned. 7. An engine speed detecting means for detecting an engine speed, a battery voltage detecting means for detecting a voltage of a battery, a cell motor driving means for driving a cell motor when a cell switch is operated, The battery when the engine speed detected by the engine speed detecting means when the cell motor is driven by the cell motor driving means is equal to or less than a predetermined value, or when the cell motor is driven by the cell motor driving means When the battery voltage detected by the voltage detecting means is equal to or lower than a predetermined value, at least one of prohibiting the start of the engine by the cell motor and displaying the prohibition of the start of the engine by the cell motor is performed. An engine control device comprising: a cell start prohibiting unit. And a flag setting unit for setting a flag when the starter motor is driven by the starter driving unit and resetting the flag when the engine is operating. Prior to driving the starter motor by the means, even when the flag is set, at least one of prohibiting the start of operation of the engine by the starter motor and / or displaying that the start of operation of the engine by the starter motor is prohibited. The engine control device according to claim 5, wherein: 9. A battery voltage detecting means for detecting a battery voltage, wherein the cell start prohibiting means resets the flag when the battery voltage detected by the battery voltage detecting means is equal to or higher than a predetermined value. The engine control device according to claim 8, further comprising a flag reset unit. 10. A cell motor driving means for driving a cell motor when a cell switch is operated, a cell motor output detecting means for detecting an output of the cell motor, and a cell motor in which a cell switch is operated and detected by the cell motor output detecting means. When there is no output, cell start prohibiting means for prohibiting the start of operation of the engine by the starter motor or displaying at least one of prohibition of operation start of the engine by the starter motor is provided. Engine control device. 11. A battery voltage detecting means for detecting a voltage of a battery, wherein the cell start prohibiting means operates the engine by the cell motor when the battery voltage detected by the battery voltage detecting means is equal to or higher than a predetermined value. 11. The engine control device according to claim 10, further comprising a cell start prohibition canceling unit for canceling the start or the display thereof. 12. The engine control device according to claim 1, wherein the cell start prohibiting unit performs a power saving process. 13. The system according to claim 1, wherein said cell start prohibiting means prohibits the start of operation of the engine by the cell motor or cancels the display thereof when the engine is operated.
The engine control device according to any one of claims 12 to 12. 14. An engine operation starting means for injecting fuel from a fuel injection device and igniting an ignition device when the engine is not operating and the engine speed is equal to or higher than a predetermined speed. An engine control device according to any one of claims 1 to 13.