WO2022138413A1

WO2022138413A1 - Start control device for engine

Info

Publication number: WO2022138413A1
Application number: PCT/JP2021/046408
Authority: WO
Inventors: 明洋石山; 紘之成田; 健太朗牧田
Original assignee: 三菱重工メイキエンジン株式会社
Priority date: 2020-12-25
Filing date: 2021-12-16
Publication date: 2022-06-30
Also published as: KR102653585B1; KR20230035645A; JP2022102005A

Abstract

An engine control device comprises: an interval control unit which, when a start operation is performed by the engine start operation switch and electricity is supplied from a battery to a starter motor, invalidates the start operation, performed by the engine start operation switch, within a predetermined interval period; a driving state determination unit that determines that the engine is in a driving state when detection of power generation input by an engine is started within the interval period and the voltage and current of the power generation input exceed predetermined thresholds; an erroneous operation prevention unit that invalidates the start operation performed by the engine start operation switch when the driving state determination unit determines that the engine is in the driving state; and a safety control unit which, if the power generation input is interrupted for longer than the predetermined period in a state in which a control ECU is started, determines that the engine is in a stopped state and continues to invalidate the start operation performed by the engine start operation switch.

Description

Engine start control

The present disclosure relates to an engine start control device.
This application claims priority based on Japanese Patent Application No. 2020-216454 filed with the Japan Patent Office on December 25, 2020, the contents of which are incorporated herein by reference.

Patent Document 1 discloses a protection device for a starter motor that starts an engine. The starter motor protection device is started by a detecting means for detecting the operating state of the engine, a cutting means for cutting the supply of a start signal for operating the starter motor when the detecting means detects the operation, and a cutting means. When a non-operating state is detected by the detecting means while the signal supply is cut, the cutting means is provided with a releasing means for canceling the cutting operation.

Japanese Unexamined Patent Publication No. 8-35771

However, in the conventional configuration shown in Patent Document 1, when the voltage of the signal line for energizing the ignition power supply reaches a predetermined value, it is detected that the engine is operating, and when the voltage does not reach the predetermined value. Since it detects when the engine is not operating, it is difficult to adopt such a starter motor protection device for an inexpensive general-purpose engine.

The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide an engine start control device capable of disabling a start operation by an engine start operation switch during engine operation.

In order to achieve the above object, the engine start control device according to the present disclosure is
The engine switch for starting the control ECU and
When the control ECU is activated by the on operation of the engine switch and the engine start operation switch is used to start the engine and electricity is supplied from the battery to the starter motor, the engine start operation switch within a predetermined interval period. Interval control unit that invalidates the start operation by
An operating state determination unit that starts detecting the power generation input by the engine within the interval period and determines that the engine is in the operating state when the voltage and current of the power generation input exceed a predetermined threshold value.
An erroneous operation prevention unit that invalidates the start operation by the engine start operation switch when the operation state determination unit determines that the operation state is in operation.
A safety control unit that continues to invalidate the start operation by the engine start operation switch when the power generation input is interrupted for more than a predetermined period while the control ECU is activated.
To prepare for.

According to the engine start control device of the present disclosure, the safety control unit invalidates the start operation by the engine start operation switch when the power generation input is interrupted for more than a predetermined period while the control ECU is activated. Therefore, the start operation by the engine start operation switch during engine operation can be invalidated.

It is a perspective view which shows the engine which adopted the start control device of the engine which concerns on embodiment of this disclosure. FIG. 3 is a circuit diagram schematically showing a control configuration of the engine shown in FIG. 1. It is a front view of the battery unit mounted on the engine shown in FIG. 1. It is a left side view of the battery unit shown in FIG. It is a right side view of the battery unit shown in FIG. FIG. 3 is a circuit diagram schematically showing a control configuration of the battery unit shown in FIG. It is a perspective view schematically showing the mounting structure of the battery unit which concerns on embodiment of this disclosure, and is the figure which shows the state which removed the cover. It is a block diagram which shows schematic the control composition of the engine start control apparatus which concerns on embodiment of this disclosure. It is a flowchart which shows the control content of the engine start control apparatus which concerns on embodiment of this disclosure.

Hereinafter, the engine start control device according to the embodiment of the present disclosure will be described with reference to the attached drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention to this, but are merely explanatory examples. do not have.

FIG. 1 is a perspective view showing an engine 1 in which the start control device 7 of the engine 1 according to the embodiment of the present disclosure is adopted, and FIG. 2 schematically shows a control configuration of the engine 1 shown in FIG. It is a circuit diagram.

The start control device 7 for the engine 1 according to the embodiment of the present disclosure is mounted on the engine 1 or a work machine (not shown) on which the engine 1 is mounted. In the embodiment of the present disclosure, the start control device 7 of the engine 1 mounted on the engine 1 will be described as an example, but the scope of the present invention is not limited to this, and the engine 1 is included in the scope of the present invention. The start control device 7 of the engine 1 mounted on the mounted work machine is also included.

The engine 1 according to the embodiment of the present disclosure is a single-cylinder or two-cylinder air-cooled gasoline engine having a displacement of 80 cc to 800 cc, and is, for example, a rice planting machine, a management machine, a tiller, a pump, a generator, or the like. It is mounted on the work machine.

As shown in FIG. 1, the engine 1 according to the embodiment of the present disclosure includes a starter 3 (see FIG. 2) in addition to the recoil starter 12. The recoil starter 12 is a device in which a person who intends to start the engine 1 grips the starter grip 121 and pulls a rope wound around a pulley to rotate the crankshaft of the engine 1 and start the engine 1. The starter motor 3 is a motor that gives rotation to the crankshaft of the engine 1 instead of the recoil starter 12, and in the engine 1 according to the embodiment of the present disclosure, the battery unit 6 (see FIG. 2) is an electric motor of accessories including the starter motor 3. It is a source.

Further, the engine 1 according to the embodiment of the present disclosure includes an engine switch 21 and an engine start operation switch 22. The engine switch 21 is a switch for turning on / off the power supply, and is arranged on the side surface of the engine 1 in the engine 1 according to the embodiment of the present disclosure. The engine switch 21 is composed of, for example, a rocker switch (also referred to as a seesaw switch), is turned on when the engine 1 is started, and is turned off when the operation of the engine 1 is stopped. The engine start operation switch 22 is a switch for starting the engine 1, and is installed alongside the engine switch 21 on the side surface of the engine 1 in the engine 1 according to the embodiment of the present disclosure. The engine start operation switch 22 is composed of, for example, a momentary push switch, and is pressed when the engine 1 is started by the starter motor 3.

Further, the engine 1 according to the embodiment of the present disclosure further includes a switch 23 for an external device. The switch 23 for an external device is, for example, a choke changeover switch 231 and is arranged on the side surface of the engine 1 in the engine 1 according to the embodiment of the present disclosure. The choke changeover switch 231 is composed of, for example, a rocker switch, and can switch between auto choke and manual choke.

As shown in FIG. 2, the engine 1 according to the embodiment of the present disclosure further includes a charge coil 13 and an ignition coil 15 in addition to the starter relay 4. The starter motor relay 4 is a relay (magnetic relay switch) that opens and closes a contact 41 provided between the battery unit 6 and the starter motor 3, and when the contact 41 is closed, electricity is supplied from the battery unit 6 to the starter motor 3. Be supplied. The charge coil 13 is provided inside the flywheel and is a coil for power generation generated by the rotation of the flywheel. The electricity generated by the charge coil 13 is supplied to the battery unit 6 via the regulator 14 to be charged. To. Since the charge coil 13 always generates power when the engine 1 is rotating, it may have a function of grasping the operating state of the engine 1 by, for example, monitoring the presence or absence of power generation in the battery unit 6. This function makes it possible to safely start the engine 1. The ignition coil 15 is provided on the outside of the fly wheel and is a generator / transformer integrated device that converts the electricity generated inside the ignition coil 15 into high-voltage electricity due to the rotation of the fly wheel, and is converted by the ignition coil 15. The generated high voltage electricity is discharged by the ignition plug 16.

As described above, the battery unit 6 according to the embodiment of the present disclosure is an electric supply source for auxiliary machinery including the starter motor 3, and supplies electricity to the starter motor 3 when the engine 1 is started, while the engine 1 (charge coil). The electricity generated in 13) is charged.

FIG. 3 is a front view of the battery unit 6 mounted on the engine 1 shown in FIG. 4 is a left side view of the battery unit 6 shown in FIG. 3, and FIG. 5 is a right side view of the battery unit 6 shown in FIG. Further, FIG. 6 is a circuit diagram showing a control configuration of the battery unit 6 shown in FIG.

As shown in FIG. 3, the battery unit 6 according to the embodiment of the present disclosure has a horizontally long substantially rectangular parallelepiped shape and has a protrusion 6a protruding upward. The battery unit 6 has a substantially rectangular parallelepiped shape having a length of 220 mm, a height of 75 mm, and a width of 45 mm, excluding the protrusion 6a, and its weight is suppressed to 800 g or less, and is excellent in portability.

The battery unit 6 according to the embodiment of the present disclosure includes a battery pack 61 and a start control device 7 for the engine 1 (see FIG. 6), which have a horizontally long substantially rectangular parallelepiped shape and a protrusion 62a projecting upward. It is housed in the housing 62 having the above.

The battery pack 61 is composed of, for example, a lithium ion battery. As shown in FIG. 6, in the battery unit 6 according to the embodiment of the present disclosure, the battery pack 61 is composed of one or more battery cells 611. The unit voltage of the battery cell 611 is 3.0 to 4.2 V, and the total capacity is 6000 to 20000 mAH, which ensures portability as the battery unit 6, and in the battery unit 6 according to the embodiment of the present disclosure, for example, It is composed of four battery cells 611.

The start control device 7 of the engine 1 is composed of a control ECU 71 (Electronic Control Unit) that controls charging / discharging of the battery pack 61. The control ECU 71 is composed of, for example, a processor including a control device and an arithmetic unit, and a control board on which a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory) is mounted. In the start control device 7 of the engine 1 according to the embodiment of the present disclosure, in the control ECU 71, the temperature of the battery pack 61 (battery temperature), the voltage of the battery pack 61 (overall voltage), and the voltage of each battery cell 611 (cell voltage). Is managed. Further, the control ECU 71 protects the battery cell 611 from over-discharging of the battery cell 611 by a protection circuit 711 for each battery cell 611. The protection circuit 711 is configured by, for example, a protection IC (integrated circuit).

Further, in the battery unit 6 according to the embodiment of the present disclosure, the wiring coupler 63 is connected to the battery unit 6. A pair of wiring couplers 24 (see FIG. 2) can be attached to and detached from the wiring coupler 63, and an input / output device provided outside the battery unit 6 and the battery unit 6 by attaching the paired wiring coupler 24. And are connected. The input / output devices provided outside the battery unit 6 are, for example, the engine switch 21, the engine start operation switch 22, the cell motor relay 4, and the like described above, and are described above via two or more wire harnesses included in the control harness 25. It is connected to the paired wiring coupler 24. Then, by attaching the wiring coupler 24 paired with the wiring coupler 63 to the wiring coupler 63 described above, a plurality of input / output devices such as the engine switch 21, the engine start operation switch 22, and the cell motor relay 4 are attached to the battery unit 6. Connected at once.

In the battery unit 6 according to the embodiment of the present disclosure, the battery unit includes an engine charge input terminal 712, a power supply detection terminal 713, an engine start operation detection terminal 714, a starter motor relay control terminal 715, an external device output terminal 716, and a constant voltage output terminal 717. 6 is provided. The engine charge input terminal 712, power supply detection terminal 713, engine start operation detection terminal 714, starter motor relay control terminal 715 and external device output terminal 716 are connected to the control ECU 71, and the charge / discharge current from these terminals is managed by the control ECU 71. .. The constant voltage output terminal 717 is directly connected to the battery pack 61, and the battery voltage (overall voltage) of the battery pack 61 is applied to the constant voltage output terminal 717. Then, the wiring coupler 63 to which these terminals are connected is installed on the protrusion 62a (see FIG. 3) in which the waterproof / dustproof structure of the housing 62 is adopted.

As shown in FIG. 2, the input / output devices connected to the battery unit 6 include a regulator 14 connected to the charge coil 13, an engine switch 21, an engine start operation switch 22, a cell motor relay 4, a valve control unit 51, and a choke valve. External devices 5 such as 52 and engine switch 21 (battery voltage is always applied), which are engine charge input line 251 and engine switch operation detection line 252, engine start operation detection line 253, cell motor relay control line 254, and valve. It is connected to the paired wiring coupler 24 via the device output line 255 and the battery voltage constant application line 256.

In the battery unit 6 according to the embodiment of the present disclosure, electricity is supplied from the regulator 14 connected to the charge coil 13 to the control ECU 71 through the engine charge input line 251. The control ECU 71 determines the temperature and voltage of the battery pack 61. , And the battery cell 611 is evenly charged with electricity while managing the voltage of each battery cell 611.

In the battery unit 6 according to the embodiment of the present disclosure, the cell motor power supply terminal 64 is provided in the housing 62 of the battery unit 6. The cell motor power supply terminal 64 is a terminal to which the power line (first power line) 641 for supplying electricity from the battery pack 61 to the cell motor 3 (cell motor relay 4) can be attached and detached. For example, the housing 62 of the battery unit 6 It is installed on the left side of the (see Fig. 5) and is waterproof / dustproof with a rubber cover.

A fuse 642 is provided in the power line 641 connecting the cell motor power supply terminal 64 and the cell motor relay 4. The fuse 642 protects the starter relay 4 and the starter motor 3 by blowing the fuse when an overcurrent exceeding the rating flows through the power line 641 due to the overdischarge of the battery pack 61. As a result, even if the fuse 642 is blown due to an overcurrent, the starter relay 4 and the starter motor 3 can be easily restored by replacing the power line 641.

As shown in FIG. 6, a battery protection relay 65 is provided between the cell motor power supply terminal 64 and the battery pack 61. The battery protection relay 65 is provided with a contact between the battery pack 61 and the starter motor feeding terminal 64, and the contact provided between the battery pack 61 and the starter motor feeding terminal 64 is closed and operated by a command from the control ECU 71. To.

In the battery unit 6 according to the embodiment of the present disclosure, the external charging input terminal 66 is provided in the housing 62 of the battery unit 6. The external charging input terminal 66 is a terminal to which a power line (second power line) (not shown) for supplying electricity for charging from an external power source to the battery unit 6 can be attached and detached. It is installed on the right side of the housing 62 (see FIG. 4) and is waterproof / dustproof with a rubber cover.

The external power source is, for example, a household power source or a car battery. For example, when the external power supply is a household power supply, the power line of the dedicated charger is attached to the external charging input terminal 66, so that the household power supply supplies electricity for charging to the external charging input terminal 66. As a result, the control ECU 71 is activated from the standby state, and the battery cell 611 is evenly charged with electricity while managing the temperature and voltage of the battery pack 61 and the voltage of each battery cell 611. Further, for example, when the external power source is a car battery, the power line connected to the car cigar socket is attached to the external charging input terminal 66, so that electricity for charging from the car battery to the external charging input terminal 66 can be obtained. Is supplied. As a result, the control ECU 71 is activated from the standby state, and the battery cell 611 is evenly charged with electricity while managing the temperature and voltage of the battery pack 61 and the voltage of each battery cell 611.

In the battery unit 6 according to the embodiment of the present disclosure, the external charging input terminal 66 is connected to the control ECU 71, and the charging electricity supplied to the external charging input terminal 66 is charged and controlled by the control ECU 71 to form the battery pack 61. One or more battery cells 611 are evenly charged.

In the battery unit 6 according to the embodiment of the present disclosure, the charge output terminal 67 is connected to the control ECU 71. The charge output terminal 67 is a terminal on which the charge input terminal provided on the mobile device can be attached and detached, and the control ECU 71 provided inside the battery unit 6 by attaching the charge input terminal provided on the mobile device. Is connected to a mobile device provided outside the housing, and electricity is supplied from the battery pack 61 to the mobile device via the control ECU 71. The mobile device is, for example, a mobile phone such as a smartphone, and the charging output terminal 67 is, for example, a USB output terminal 671 and is a female terminal of either Type A, B or C, and an output of up to 2A can be obtained. Is used.

In the battery unit 6 according to the embodiment of the present disclosure, the charge output terminal 67 is provided so as to extend from the protrusion 62a provided on the housing 62 of the battery unit 6 to the outside of the battery unit 6, and is provided with waterproof / dustproof measures. It has been subjected.

As shown in FIG. 3, the battery unit 6 according to the embodiment of the present disclosure is provided with one or more indicators 68 and a charge remaining amount confirmation button 69 on the front surface of the housing of the battery unit 6. One or more indicators 68 and the remaining charge confirmation button 69 are connected to the control ECU 71. One or more indicators 68 constitute, for example, a remaining charge amount indicator lamp and a status indicator lamp of the control ECU 71.

The remaining charge amount indicator lamp is composed of, for example, 3 to 5 LED lamps. For example, 3 to 5 LED lamps are composed of 2 to 4 same color LED lamps and 1 different color LED lamp, and the same color LED as the remaining charge amount of the battery pack 61 decreases. When the number of lamps lit is reduced, the LED lamps of different colors are controlled to be lit at the end, and the charge remaining amount confirmation button 69 is pressed when the control ECU 71 is in the stopped state, the control ECU 71 is released from the standby state. It is activated and controlled so that one or more indicators 68 display the remaining charge of the battery pack 61 at that time.

Further, the status indicator lamp of the control ECU 71 is composed of one to three LED lamps of different colors, and is controlled to light any LED lamp based on the status of the control ECU 71. For example, when the engine switch 21 is turned on and the engine 1 can be started, the LED lamp for notifying the start operation is lit, and after the engine 1 is started, the engine 1 is in operation. The LED lamp lights up.

FIG. 7 is a perspective view schematically showing the mounting structure of the battery unit 6 according to the embodiment of the present disclosure, and is a diagram showing a state in which the cover 9 is removed.

As shown in FIG. 7, in the mounting structure of the battery unit 6 according to the embodiment of the present disclosure, the battery unit 6 is mounted on the side surface of the engine 1, but the scope of the present invention is not limited thereto. , Which is mounted at an arbitrary position of the work machine on which the engine 1 is mounted.

The mounting structure of the battery unit 6 mounted on the engine 1 in which the start control device 7 of the engine 1 according to the embodiment of the present disclosure is adopted includes a case 8 and a cover 9 in addition to the battery unit 6 described above. ..

The case 8 is attached to the engine 1 or the work machine on which the engine 1 is mounted. The case 8 is attached to the front surface of the engine 1, for example. The case 8 has a box shape with an open front surface, and houses the battery unit 6. The case 8 has, for example, a horizontally long rectangular parallelepiped box shape with an open front surface, a storage area for accommodating the battery unit 6 is provided in a lower area thereof, and

wiring couplers

24 and 63 are connected in an upper area thereof. There is a space. The accommodating area has a volume slightly larger than the volume of the battery unit 6, and the battery unit 6 is accommodated so as to be fitted in the accommodating area. The connection space has a sufficient volume for connecting the wiring coupler 63 and the wiring coupler 24 paired with the wiring coupler 63, and the engine switch 21 and the engine start operation switch 22 described above are on the right side of the connection space. The switch 23 for the above-mentioned external device, for example, the choke changeover switch 231 is installed on the left side of the connection space.

The cover 9 is attached to the case 8 and closes the opening of the case 8 in which the battery unit 6 is housed. The cover 9 has, for example, a box shape with an open rear surface, and is combined with the case 8 containing the battery unit 6 to close the front opening of the case 8. The cover 9 is, for example, one size larger in the longitudinal direction of the case 8 than the case 8, and the power line 641 (see FIG. 2) connecting the battery unit 6 (starter motor feeding terminal 64) and the starter relay 4 to the right side region of the case 8. Wiring space is secured.

Further, for example, the cover 9 is cut out from the area corresponding to the engine switch 21 and the engine start operation switch 22 described above, and the engine switch 21 and the engine start operation switch 22 are provided with the cover 9 attached to the case 8. It is exposed to the outside of the cover 9. Further, for example, the cover 9 is provided with a rectangular window 9a in the area corresponding to the switch 23 for the external device, and the switch 23 for the external device is outside the cover 9 with the cover 9 attached to the case 8. Be exposed to.

Further, the cover 9 is provided with a rectangular window 9b in the area corresponding to, for example, one or more indicators 68 and the remaining charge confirmation button 69, and one or more covers 9 are attached to the case 8. Two or more indicators 68 and a remaining charge confirmation button 69 are exposed outside the cover 9.

Further, the cover 9 is provided with through holes at one end and the other end in the longitudinal direction, respectively, and the bolt 91 through which the through holes are inserted is fitted into the screw holes provided in the case 8, so that the case 8 is provided. The cover 9 is attached to. As the bolt 91 through which the through hole is inserted, for example, a bolt or a wing bolt provided with a split groove into which a coin is fitted is adopted.

In the mounting structure of the battery unit 6 according to the embodiment of the present disclosure, the above-mentioned battery unit 6 has a cushioning material 6b attached to the front surface facing the cover 9. As a result, vibration transmitted from the engine 1 or the work machine to the battery unit 6 can be suppressed, and the battery unit 6 can be protected.

FIG. 8 is a block diagram schematically showing a control configuration of the start control device 7 of the engine 1 according to the embodiment of the present disclosure.

As shown in FIG. 8, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, the control ECU 71 includes an interval control unit 731, an operating state determination unit 732, an erroneous operation prevention unit 733, and a safety control unit 734. There is.

The interval control unit 731 is started by the engine start operation switch 22 with the control ECU 71 activated, and when electricity is supplied from the battery pack (battery) 61 to the starter motor 3, the interval control unit 731 is within a predetermined interval period. The start operation by the engine start operation switch 22 is invalidated. As a result, when the start operation is performed by the engine start operation switch 22 and electricity is supplied from the battery pack 61 to the starter motor 3, even if the start operation is performed by the engine start operation switch 22 within the interval period, the engine 1 is operated by the starter motor 3. No cranking is done. The interval period is arbitrarily set, for example, between 5 seconds and 30 seconds.

Even if the engine switch 21 is turned off during the interval period, the start operation by the engine start operation switch 22 during the interval period is invalidated, and the control ECU 71 shifts to the standby state after the end of the interval period.

The operating state determination unit 732 detects the power generation input by the engine 1 (charge coil 13) within the interval period, and when the voltage and current of the power generation input exceed a predetermined threshold value, the engine 1 is in the operating state. Is determined. According to the operating state determination unit 732 configured in this way, it is possible to determine whether or not the engine 1 is in the operating state with a simple configuration.

The erroneous operation prevention unit 733 invalidates the start operation by the engine start operation switch 22 when the operation state determination unit 732 determines that the operation state is in operation. According to the erroneous operation prevention unit 733 configured in this way, cranking of the engine 1 by the starter motor 3 during operation of the engine 1 can be prevented.

The safety control unit 734 continues to invalidate the start operation by the engine start operation switch 22 when the power generation input is interrupted for more than a predetermined period while the control ECU 71 is activated. When the power generation input is interrupted for more than a predetermined period, for example, when the engine 1 is stopped due to an overload, when the engine 1 is stopped due to a fuel shortage, or when the engine charge input line 251 is disconnected. Will be done. In this case, the safety control unit 734 shifts the control ECU 71 from the activated state to the standby state. The predetermined period can be arbitrarily set, and is, for example, arbitrarily set between 10 seconds and 30 seconds.

Further, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, the operation state determination unit 732 determines that the engine 1 is in the stopped state when the power generation input is interrupted for a period exceeding a predetermined period. After the determination, the power generation input is detected, and when the voltage and current of the power generation input exceed the threshold value, it is determined that the engine 1 is in the operating state. When the power generation input is detected after it is determined that the engine 1 is in the stopped state, for example, after the engine 1 is stopped, the engine 1 is restarted by the recoil starter 12 to input from the engine 1 (charge coil 13). This is the case when the generated power generation input is detected.

Further, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, the safety control unit 734 cancels the invalidation of the start operation by the engine start operation switch 22 by the off operation of the engine switch 21. Once the engine switch 21 is turned off in this way, the invalidation of the start operation by the engine start operation switch 22 is canceled. Therefore, after the engine switch 21 is turned on, the start operation of the engine start operation switch 22 causes the starter motor 3 to operate. The engine 1 can be cranked.

FIG. 9 is a flowchart schematically showing the control contents of the start control device 7 of the engine 1 according to the embodiment of the present disclosure.

As shown in FIG. 9, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, when the engine switch 21 is turned on (step S41: Yes), the power is turned on and the control ECU 71 is in the standby state. It switches to the activated state (step S42). Then, when the engine start operation switch 22 starts the engine (step S43: Yes), the control ECU 71 supplies electricity from the battery pack 61 to the starter motor 3, so that the starter motor 3 cranks the engine 1 (step S44). ). Then, when the engine 1 is started by the cranking of the engine 1, the interval control unit 731 invalidates the start operation by the engine start operation switch 22 within the interval period (step S45). As a result, the starter motor 3 does not crank the engine 1 within the interval period (after the engine 1 is started), and the starter motor relay 4 and the starter motor 3 can be protected.

Then, when the power generation input by the engine 1 is detected within the interval period and the voltage and current of the power generation input exceed a predetermined threshold value (step S46: Yes), the operation state determination unit 732 is in the operation state of the engine 1. It is determined that there is (step S47).

Then, when the operating state determination unit 732 determines that the engine 1 is in the operating state, the erroneous operation prevention unit 733 invalidates the starting operation by the engine starting operation switch 22 (step S48). As a result, as long as the operating state determination unit 732 determines that the engine 1 is in the operating state even after the interval period has passed, the erroneous operation prevention unit 733 continues to invalidate the starting operation by the engine starting operation switch 22. As a result, as long as the operation state determination unit 732 determines that the engine 1 is in the operating state even after the interval period has passed, the starter motor 3 does not crank the engine 1 and the starter motor relay 4 and the starter motor 3 can be protected. ..

Then, when the power generation input is interrupted beyond a predetermined period (step S49: Yes), the safety control unit 734 continues to invalidate the start operation by the engine start operation switch 22. As a result, even if the power generation input is interrupted for more than a predetermined period after the lapse of the interval period, the starter motor 3 does not crank the engine 1 and the engine 1 is operated without the power generation input. However, the starter motor relay 4 and the starter motor 3 can be protected.

Further, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, when the power generation input is interrupted beyond a predetermined period (step S49: Yes), the operation state determination unit 732 is in a stopped state of the engine 1. (Step S50). On the other hand, after the determination, the power generation input is detected, and when the voltage and current of the power generation input exceed the threshold value (step S51: Yes), it is determined that the engine 1 is in the operating state (step S52). As a result, when the engine 1 is stopped due to an overload, or when the engine 1 is stopped due to lack of fuel, the engine 1 is operated by the operation state determination unit 732 even when the engine 1 is restarted by the recoil starter 12. It can be determined that it is in a state.

Further, in the start control device 7 of the engine 1 according to the embodiment of the present disclosure, the engine 1 is stopped by the off operation of the engine switch 21 (steps S54 and S55), and the safety control unit 734 is started by the engine start operation switch 22. (Step S56). As a result, after the engine 1 is surely stopped, the invalidation of the start operation by the engine start operation switch 22 is eliminated, so that the starter motor 3 does not crank the engine 1 during the operation of the engine 1, and the starter motor The relay 4 and the starter motor 3 can be protected.

According to the start control device 7 of the engine 1 according to the embodiment of the present disclosure described above, the control ECU 71 supplies electricity from the battery pack 61 to the starter motor 3, so that the starter motor 3 cranks the engine 1 and the engine 1 When the engine starts, the interval control unit 731 invalidates the start operation by the engine start operation switch 22 within the interval period. As a result, the starter motor 3 does not crank the engine 1 within the interval period (after the engine 1 is started), and the starter motor relay 4 and the starter motor 3 can be protected.

Further, when the operating state determination unit 732 determines that the engine 1 is in the operating state, the erroneous operation prevention unit 733 invalidates the starting operation by the engine starting operation, so that the operating state determination unit 732 still operates the engine 1 even after the interval period has passed. As long as it is determined that the engine is in the operating state, the erroneous operation prevention unit 733 continues to invalidate the start operation by the engine start operation switch 22. As a result, as long as the operation state determination unit 732 determines that the engine 1 is in the operating state even after the interval period has passed, the starter motor 3 does not crank the engine 1 and the starter motor relay 4 and the starter motor 3 can be protected. ..

Further, when the power generation input is interrupted for more than a predetermined period, the safety control unit 734 continues to invalidate the start operation by the engine start operation switch 22. As a result, even if the power generation input is interrupted after the interval period elapses, the starter motor 3 does not crank the engine 1, and the engine 1 is in a state where there is no power generation input (for example, the engine charging input line 251 is disconnected). The starter motor relay 4 and the starter motor 3 can be protected even when they are in operation.

Further, when the power generation input is interrupted for more than a predetermined period, the operation state determination unit 732 determines that the engine 1 is in the stopped state, and after the determination, detects the power generation input, and the voltage of the power generation input and the power generation input. When the utility pole exceeds the threshold value, it is determined that the engine 1 is in the operating state. As a result, when the engine 1 is stopped due to an overload, or when the engine 1 is stopped due to lack of fuel, the engine 1 is operated by the operation state determination unit 732 even when the engine 1 is restarted by the recoil starter 12. It can be determined that it is in a state.

Further, since the safety control unit 734 cancels the invalidation of the start operation by the engine start operation switch 22 after the engine 1 is surely stopped by the off operation of the engine switch 21, the engine by the starter motor 3 while the engine 1 is in operation. Cranking of 1 can be prevented. Thereby, the starter motor relay 4 and the starter motor 3 can be protected.

The present invention is not limited to the above-mentioned embodiment, and includes a form in which the above-mentioned embodiment is modified and a form in which these forms are appropriately combined.

The contents described in each of the above embodiments are grasped as follows, for example.

The start control device (7) of the engine (1) according to the aspect of [1] is
The engine switch (21) for activating the control ECU (71) and
With the control ECU (71) activated by the ON operation of the engine switch (21), the engine start operation switch (22) starts the engine, and electricity is supplied from the battery (battery pack 61) to the starter motor (3). In this case, the interval control unit (731) that invalidates the start operation by the engine start operation switch (22) within the predetermined interval period, and
Operation in which the detection of the power generation input by the engine (1) is started within the interval period, and when the voltage and current of the power generation input exceed a predetermined threshold value, it is determined that the engine (1) is in the operating state. The state determination unit (732) and
An erroneous operation prevention unit (733) that invalidates the start operation by the engine start operation switch (22) when the operation state determination unit (732) determines that the operation state is in operation.
When the power generation input is interrupted for more than a predetermined period while the control ECU (71) is activated, the safety control unit (734) continues to invalidate the start operation by the engine start operation switch (22). )When,
To prepare for.

According to the start control device (7) of the engine (1) according to the present disclosure, in the safety control unit (734), the power generation input is interrupted for more than a predetermined period while the control ECU (71) is activated. In this case, the invalidation of the start operation by the engine start operation switch (22) is continued. As a result, the starter motor (3) does not crank the engine (1) even if the power generation input is interrupted after the lapse of the interval period, and the starter motor (1) is operated even when the engine (1) is operated without the power generation input. The relay (4) and the starter motor (3) can be protected.

[2] The start control device (7) of the engine (1) according to another aspect is the start control device (7) of the engine (1) according to [1].
The operating state determination unit (732) determines that the engine (1) is in a stopped state when the power generation input is interrupted for a predetermined period, and detects the power generation input after the determination. When the voltage and current of the power generation input exceed the threshold value, it is determined that the engine (1) is in the operating state.

According to such a configuration, even when the engine (1) is restarted by the recoil starter (12), the operating state determination unit (732) can determine that the engine (1) is in the operating state.

[3] The start control device 7 of the engine (1) according to another aspect is the start control device (7) of the engine (1) according to [1] or [2].
The safety control unit (734)
The off operation of the engine switch (21) eliminates the invalidation of the start operation by the engine start operation switch (22).

According to such a configuration, the safety control unit (734) disables the start operation by the engine start operation switch (22) after the engine (1) is surely stopped by the off operation of the engine switch (21). Since the problem is eliminated, cranking of the engine (1) by the starter motor (3) can be prevented while the engine (1) is in operation.

1 Engine 12 Recoil Starter 121 Starter Grip 13 Charge Coil 14 Regulator 15 Ignition Coil 16 Ignition Plug 21 Engine Switch 22 Engine Start Operation Switch 23 Switch for External Equipment 231 Choke Changeover Switch 24 Wiring Coupler 25 Control Harness 251 Engine Charging Input Line 252 Engine Switch operation detection line 254 Cell motor relay control line 255 Valve device output line 256 Battery voltage constant application line 3 Starter motor 4 Cell motor relay 41 Contact 5 External device 51 Valve control unit 52 Chalk valve 6 Battery unit 6a Protrusion 6b Buffer material 61 Battery pack 611 Battery cell 612 Temperature sensor 62 Housing 62a Protrusion 63 Wiring coupler 64 Starter power supply terminal 641 Power line (first power line)
642 Fuse 65 Battery protection relay 66 External charge input terminal 67 Charge output terminal 671 USB output terminal 68 Indicator 69 Charge remaining amount confirmation button 7 Start control device 71 Control ECU
711 Protection circuit 712 Engine charge input terminal 713 Power supply detection terminal 714 Engine start operation detection terminal 715 Starter motor relay control terminal 716 External device output terminal 717 Constant voltage output terminal 731 Interval control unit 732 Operation status judgment unit 733 Erroneous operation prevention unit 734 Safety control unit 8 Case 9

Cover

9a, 9b Window 91 Bolt

Claims

The engine switch for starting the control ECU and
When the control ECU is activated by the on operation of the engine switch and the engine start operation switch is used to start the engine and electricity is supplied from the battery to the starter motor, the engine start operation switch within a predetermined interval period. Interval control unit that invalidates the start operation by
An operating state determination unit that starts detecting the power generation input by the engine within the interval period and determines that the engine is in the operating state when the voltage and current of the power generation input exceed a predetermined threshold value.
An erroneous operation prevention unit that invalidates the start operation by the engine start operation switch when the operation state determination unit determines that the operation state is in operation.
When the power generation input is interrupted for more than a predetermined period while the control ECU is activated, it is determined that the engine is in the stopped state, and the start operation by the engine start operation switch is continued to be invalidated. Safety control unit and
Engine start control with.
The operating state determination unit determines that the engine is in a stopped state when the power generation input is interrupted for more than a predetermined period, and after the determination, detects the power generation input and the voltage of the power generation input. And when the current exceeds the threshold value, it is determined that the engine is in an operating state.
The engine start control device according to claim 1.
The safety control unit
By turning off the engine switch, the invalidation of the start operation by the engine start operation switch is eliminated.
The engine start control device according to claim 1 or 2.