CN115715350A - Engine starting device and straddle-type vehicle - Google Patents
Engine starting device and straddle-type vehicle Download PDFInfo
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- CN115715350A CN115715350A CN202180041253.1A CN202180041253A CN115715350A CN 115715350 A CN115715350 A CN 115715350A CN 202180041253 A CN202180041253 A CN 202180041253A CN 115715350 A CN115715350 A CN 115715350A
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- 239000007858 starting material Substances 0.000 claims abstract description 58
- 238000010248 power generation Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Provided is an engine starting device capable of accurately stopping reverse driving in a backswing control in a desired range. In an engine starting device (100) provided with an ACG starter motor (50), a crank angle sensor (40) for detecting the rotation state of a crankshaft (C), a rotation speed calculation means (81) for calculating the rotation speed (Ne) of the crankshaft (C), and a control unit (80) for controlling the drive and power generation of the ACG starter motor (50), the control unit (80) executes a swing-back control for driving the crankshaft (C) in a reverse direction to a predetermined range when the engine (E) is started. The control unit (80) reduces the output of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 1) during the swing-back control, and increases the output of the ACG starter motor (50) when the rotation speed (Ne) is less than or equal to the threshold value (Ne 1) during the swing-back control.
Description
Technical Field
The present invention relates to an engine starting apparatus, and more particularly to an engine starting apparatus that executes a swing back control (control) for switching to a forward rotation drive after a crankshaft is driven in a reverse rotation to a predetermined range at the time of starting an engine.
Background
Conventionally, there is known a structure in which an ACG starter motor that is driven by electric power supplied from a battery and generates electric power in a driven state is attached to a crankshaft of an engine.
Patent document 1 discloses an engine starting device including: when the engine is started, the ACG starter motor is controlled to execute a swing-back control in which the crankshaft is driven in the reverse rotation direction to a predetermined range and then switched to the drive in the normal rotation direction.
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open No. 2000-283010
Disclosure of Invention
However, in the technique of patent document 1, when the reverse rotation driving in the swing-back control is stopped, the rotation speed of the ACG starter motor is stopped when the rotation speed is equal to or greater than a predetermined value, and when the rotation speed is less than the predetermined value, the rotation speed is stopped after a predetermined time has elapsed.
An object of the present invention is to solve the above-described problems of the prior art and to provide an engine starting device capable of accurately stopping reverse driving in the backswing control in a desired range.
In order to achieve the above object, the present invention provides an engine starting device (100) comprising: an ACG starter motor (50) which drives a crankshaft (C) of an engine (E) in a forward direction or a reverse direction and generates power by the rotational force of the crankshaft (C); a crank angle sensor (40) that detects the rotational state of the crankshaft (C); and a control unit (80) that calculates a rotation speed (Ne) of the crankshaft (C) using the rotation state detected by the crank angle sensor (40) and controls driving and power generation of the ACG starter motor (50), wherein the engine starting device (100) includes the following feature: the control unit (80) executes a swing back control for driving the crankshaft (C) in reverse to a predetermined range when the engine (E) is started, and the control unit (80) decreases the output of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 1) in the swing back control, and increases the output of the ACG starter motor (50) when the rotation speed (Ne) is equal to or less than the threshold value (Ne 1) in the swing back control.
Further, the 2 nd feature is: the control unit (80) drives the crankshaft (C) in a normal direction until the start of the engine (E) is completed after the swing-back control, and the control unit (80) stops the drive of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 2) during the drive in the normal direction, and drives the ACG starter motor (50) when the rotation speed (Ne) is equal to or less than the threshold value (Ne 2) during the drive in the normal direction.
Further, the 3 rd feature is: the control unit (80) determines that the start of the engine (E) is completed and stops the drive of the ACG starter motor (50) when the rotational speed (Ne) exceeds an engine start completion threshold (Ne 3).
Further, the 4 th feature is: the detection of the predetermined range in which the reverse rotation driving is stopped in the swing-back control is performed by a push-back operation in the vicinity of the compression top dead center.
Further, the 5 th feature is: the crank angle sensor (40) includes a plurality of sensor elements, and the rotation speed calculation means (81) calculates the rotation speed (Ne) twice or more using the plurality of sensor elements during one rotation of the crankshaft (C).
Further, the 6 th feature is: the predetermined range in which the reverse rotation driving is stopped in the swing back control is a position slightly beyond the compression top dead center in the normal rotation direction.
Further, the 7 th feature is: a straddle-type vehicle is provided with an engine starting device.
Effects of the invention
According to the first aspect, an engine starting device (100) comprises: an ACG starter motor (50) which drives a crankshaft (C) of an engine (E) in a forward direction or a reverse direction and generates power by the rotational force of the crankshaft (C); a crank angle sensor (40) that detects the rotational state of the crankshaft (C); and a control unit (80) that calculates a rotation speed (Ne) of the crankshaft (C) using the rotation state detected by the crank angle sensor (40) and controls the drive and power generation of the ACG starter motor (50), wherein in the engine starting apparatus (100), the control unit (80) executes a swing-back control for reversely driving the crankshaft (C) to a predetermined range when the engine (E) is started, and the control unit (80) decreases the output of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 1) in the swing-back control and increases the output of the ACG starter motor (50) when the rotation speed (Ne) becomes equal to or less than the threshold value (Ne 1) in the swing-back control, so that the ACG starter motor can be accurately stopped in the predetermined range by switching the progress/stop (ON/OFF) of the drive in accordance with the rotation speed of the ACG starter motor in the reverse drive of the swing-back control.
According to the second feature, the control unit (80) drives the crankshaft (C) in the normal direction until the start of the engine (E) is completed after the swing-back control, and the control unit (80) stops the drive of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 2) during the drive in the normal direction, and drives the ACG starter motor (50) when the rotation speed (Ne) becomes equal to or less than the threshold value (Ne 2) during the drive in the normal direction, so that the ACG starter motor assists the engine in the rotation unstable state during low-speed rotation in which the rotation fluctuation is likely to increase until the start of the engine is completed, and reliable engine start can be achieved.
According to the 3 rd feature, the control unit (80) determines that the start of the engine (E) is completed and stops the drive of the ACG starter motor (50) when the rotation speed (Ne) exceeds the engine start completion threshold (Ne 3), and therefore, the completion of the start of the engine can be confirmed by monitoring the rotation speed.
According to the 4 th aspect, since the detection of the predetermined range in which the reverse rotation driving is stopped in the swing back control is performed by pushing back in the vicinity of the compression top dead center, the accuracy of the detection of the predetermined range can be improved.
According to the 5 th aspect, the crank angle sensor (40) includes a plurality of sensor elements, and the rotation speed calculation means (81) calculates the rotation speed (Ne) twice or more during one rotation of the crankshaft (C) using the plurality of sensor elements, so that it is possible to perform finer control by calculating the rotation speed twice or more during one rotation of the crankshaft.
According to the feature of claim 6, since the predetermined range in which the reverse rotation drive is stopped in the swing-back control is a position slightly beyond the compression top dead center in the normal rotation direction, the compression top dead center is easily passed by extending the start assisting period of the normal rotation drive, and the startability of the engine is improved.
According to the 7 th aspect, since the straddle-type vehicle is provided with the engine starting device, the straddle-type vehicle can be provided with the engine starting device having excellent engine startability.
Drawings
Fig. 1 is a left side view of a motorcycle as a straddle-type vehicle of an embodiment of the present invention.
Fig. 2 is a block diagram showing the configuration of the engine control device.
Fig. 3 is a graph showing changes in the crankshaft rotation speed during reverse rotation driving in the swing-back control.
Fig. 4 is a timing chart showing the flow of the swing-back control according to the present embodiment.
Fig. 5 is a flowchart showing the steps of the engine start control according to the present embodiment.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a left side view of a motorcycle 1 according to an embodiment of the present invention. The motorcycle 1 is a scooter-type straddle-type vehicle provided with a lower floor 24 on which a driver's feet are placed between a steering handle 3 and a seat 22.
A head pipe F1 that rotatably supports the steering shaft 28 is provided at the front end of the vehicle body frame F. The vehicle body frame F includes: a main frame F2 extending rearward and downward from the head pipe F1; a pair of left and right down-extending frames F3 extending from the lower end of the main frame F2 to the rear of the vehicle body; and a rear frame F4 connected to the drop frame F3 and extending rearward and upward.
A lower cross tube 26 that supports the front fork 10 that rotatably supports the front wheel WF via the front wheel axle FS is fixed to a lower end portion of the steering stem 28. A steering handle 3 extending in the vehicle width direction is fixed to an upper end portion of the steering stem 28. The front and rear of the steering handle 3 are covered with a handle cover 5 that supports the meter device. A front fender 9 for covering the upper side of the front wheel WF is attached to the front fork 10.
A headlight 8 and a pair of left and right blinkers 27 are supported between the intermediate cowl 6 disposed at the center in the vehicle width direction in front of the steering stem 28 and the pair of left and right front side cowls 7 in the vehicle width direction. A floor panel 25 facing the legs of the driver is connected to the vehicle body rear side of the front side cover 7.
The seat 22 is covered at the front lower side with a seat lower plate 23, and a rear cover 20 covering the vehicle width direction left and right of the rear frame F4 is connected to the rear of the seat lower plate 23. An integrally swinging power unit P integrating the engine E and the transmission is pivotally supported at the rear end of the drop frame F3 so as to be freely swingable. The rear end of the power unit P that rotatably supports the rear wheel WR via the rear wheel axle RS is suspended from the rear frame F4 by the rear cushion 16. An ACG starter motor 50 functioning as a generator and an engine is fixed to a crankshaft (crankshaft) C of the engine E.
An intermediate bracket 13 is attached to a lower portion of the power unit P, and a recoil starter 14 for a passenger to start the power unit P with his foot is attached to a left side surface of the power unit P in the vehicle width direction. An air filter box 19 is disposed above the power unit P.
A lower cover 11 that covers the side and lower portions of the drop frame F3 is connected to the left and right sides of the low floor 24 in the vehicle width direction. A side bracket 12 supported by the drop frame F3 is disposed on the left side of the under cover 11 in the vehicle width direction. A rear seat pedal 21 supported by the rear frame F4 is disposed in front of the air filter box 19. A rear grip 18 supported by the rear frame F4 is disposed behind the seat 22, and a tail lamp device 17 is disposed at a rear end of the rear cover 20. A rear fender 15 is disposed below the tail lamp device 17. The ECU80 as an engine control device is disposed at a lower portion of the seat 22.
Fig. 2 is a block diagram showing the configuration of engine control device 100. The crank angle, which is the rotational position of the ACG starter motor 50, is detected by a U-phase sensor 40U, a V-phase sensor 40V, and a W-phase sensor 40W attached to the crank angle sensor 40. The crank angle sensor 40 is also provided with a PCB sensor 40P that detects a singular point. Since the PCB sensor 40P detects the singular point, the compression top dead center and the exhaust top dead center can be detected.
The ECU80 includes: rotation speed calculation means 81 that calculates the rotation speed of the crankshaft C based on the output signal of the crank angle sensor 40; an ACG starter motor drive 82 that controls the ACG starter motor 50; and a normal/reverse rotation determination unit 83 that determines which of the normal/reverse rotation states the ACG starter motor 50 is in. The generated electric power of the ACG starter motor 50 is returned to the battery B via the ECU 80. The ECU80 receives an output signal of a starter SW (switch) 92. The ECU80 controls the fuel injection device 90 and the ignition device 91 in addition to the ACG starter motor 50.
The crank angle sensor 40 of the present embodiment includes three sensor elements, and the rotation speed calculation means 81 calculates the rotation speed Ne twice or more during one rotation of the crankshaft C using the three sensor elements. This enables finer control of the change in the rotation speed Ne.
When the engine E is started, the ECU80 of the present embodiment executes the swing-back control of driving the crankshaft C in the reverse direction to a predetermined range and then switching to the drive in the normal direction. Further, the control device is characterized in that, at the time of reverse driving of the swing-back control, the following control is alternately performed: when the rotation speed Ne of the crankshaft C exceeds the threshold Ne1, the drive load (duty) of the PWM control is switched from 100% to 0%, and when the rotation speed Ne of the crankshaft C is equal to or less than the threshold Ne1, the drive load of the PWM control is switched from 0% to 100%, and the motor drive is terminated when the push-back by the compression reaction force occurs.
Fig. 3 is a graph showing a transition of the rotation speed Ne of the crankshaft C during reverse rotation driving in the swing-back control. At a crank angle r =0, reverse rotation driving of the ACG starter motor 50 at a driving load of 100% is started. Next, at the crank angle r1, the rotation speed Ne in the reverse rotation direction exceeds a reverse rotation upper limit setting value Ne1 (for example, 600 rpm) as a threshold. The reverse rotation upper limit setting value Ne1 is set, for example, so that the crankshaft C does not go beyond the compression top dead center due to reverse rotation.
The ECU80 switches the driving load from 100% to 0% when the rotation speed Ne exceeds the reverse rotation upper limit setting Ne 1. Thus, when the rotation speed Ne starts to decrease and becomes equal to or less than the inversion upper limit setting value Ne1, the driving load is switched from 0% to 100%. By this repetition, the ACG starter motor 50 can continue reverse rotation substantially along the reverse rotation upper limit setting Ne1 by simple control according to the output value of the crank angle sensor 40. Since the inertial force of the crankshaft C is large and a control delay occurs, the rotation speed Ne during reverse rotation is on a line graph along the reverse rotation upper limit setting value Ne 1.
At the crank angle r2, when the crankshaft C reaches a predetermined range slightly beyond the compression top dead center in the normal rotation direction due to the generation of the push-back reaction force, the reverse rotation drive is stopped. Here, the push-back reaction force that is suddenly increased due to the approach of the compression top dead center is generated when the interval ratio between the previous pulse and the current pulse of the crank angle sensor 40 is larger than a predetermined value. In the region where the push-back reaction force is generated, the crank shaft C hardly moves due to the relationship between the push-back reaction force and the reverse driving force, so that the reading from the crank angle sensor 40 does not occur, and the interval ratio between the previous pulse and the present pulse of the crank angle sensor 40 is larger than the predetermined value. A graph a shown by a one-dot chain line shows a case where startability deteriorates due to deterioration of the battery and the ACG starter motor 50, and a graph B shown by a two-dot chain line shows a case where a start angle of reverse rotation is different.
Fig. 4 is a timing chart showing the flow of the swing-back control according to the present embodiment. In the timing chart, the rotation speed Ne of the crankshaft C, the drive instruction of the ACG starter motor 50, and the motor load are shown in order from the top. In the present embodiment, by limiting the motor load to two modes, 100% and 0%, the motor control can be simplified, and the design load and the control load can be reduced.
At time t =0, the drive instruction of the acg starter motor 50 is "stop", the rotation speed Ne is zero, and the motor load is also in a zero state. At time t1, the drive instruction is switched from "stop" to "reverse" in accordance with the on operation of the starter switch 92, and the motor load is switched to 100%.
At time t2, the rotation speed Ne in the reverse direction exceeds the reverse upper limit setting value Ne1, whereby the motor load is switched to 0%. Next, at time t3, the rotation speed Ne becomes equal to or less than the reverse rotation upper limit setting value Ne1, and the motor load is switched to 100%.
At time t4, the drive instruction is switched from the reverse rotation to the normal rotation, whereby the motor load is switched to 100% of the normal rotation direction. Then, at time t5, the rotation speed Ne exceeds the engine start determination setting value Ne3 (for example, 1000 rpm), whereby the motor drive ends.
In addition, the switching control of the motor load of 100% and 0% during the motor driving can be performed not only in the reverse rotation driving of the swing-back control but also in the normal rotation driving after the reverse rotation driving. Thus, in the unstable rotation state during low-speed rotation in which the rotation fluctuation is likely to increase, the ACG starter motor assists the engine until the engine start is completed, and reliable engine start can be achieved.
Fig. 5 is a flowchart showing the steps of the engine start control according to the present embodiment. In step S1, it is determined whether or not the starter switch 92 is on, and if an affirmative determination is made, the process proceeds to step S2. If a negative determination is made in step S1, the process returns to the determination in step S1.
If an affirmative determination is made in step S1, the starter relay is turned on in step S2. In step S3, the motor load for driving the ACG starter motor 50 in the reverse direction is set to 100%. In step S4, a motor reverse rotation drive command is output.
In step S5, it is determined whether or not the rotation speed Ne (reverse Ne) exceeds a reverse upper limit setting value Ne1, and if an affirmative determination is made, the motor load is switched to 0% in step S6, while if a negative determination is made, the motor load is maintained at 100% in step S7.
In step S8, it is determined whether a compression vertex is detected. Specifically, it is determined whether or not the predetermined range is within which the reverse rotation driving is ended at a position slightly advanced in the normal rotation direction from the compression top dead center.
In step S9, the normal rotation driving is started with the motor load of 100%. In step S10, a motor normal rotation drive command is output. In step S11, it is determined whether or not the rotation speed (normal rotation Ne) exceeds a normal rotation upper limit setting value Ne2, and if an affirmative determination is made, the motor load is switched to 0% in step S12, while if a negative determination is made, the motor load is maintained at 100% in step S13. The normal rotation upper limit setting Ne2 during the normal rotation driving needs to go over the compression top dead center, and therefore can be set to a value equal to or slightly larger than the reverse rotation upper limit setting Ne1 (for example, 600 rpm).
Then, in step S14, it is determined whether or not the rotation speed (normal rotation Ne) exceeds an engine start determination setting value Ne3 (for example, 1000 rpm), and if an affirmative determination is made, the routine proceeds to step S15, where the start relay is turned off, and the series of control is ended. On the other hand, if a negative determination is made in step S14, the process returns to the determination in step S11.
As described above, according to the engine control apparatus 100 of the present embodiment, the ECU80 executes the swing control for driving the crankshaft C in the reverse direction to the predetermined range when the engine E is started, and the ECU8 stops the drive of the ACG starter motor 50 (set to 0% load) when the rotation speed Ne exceeds the threshold Ne1 in the swing control, and drives the ACG starter motor 50 (set to 100% load) when the rotation speed Ne becomes the threshold Ne1 or less in the swing control, so that the execution/stop (ON/OFF) of the drive is switched according to the rotation speed of the ACG starter motor in the reverse drive of the swing control, and the ACG starter motor 50 can be accurately stopped in the predetermined range.
The form of the motorcycle, the forms of the ACG starter motor and the crank angle sensor, the upper limit setting value of the rotation speed, and the like are not limited to the above-described embodiments, and various modifications are possible. The engine starting device of the present invention is not limited to a motorcycle, and can be applied to a straddle type tricycle, a four-wheel vehicle, or the like.
Description of the reference numerals
1 \8230, a motorcycle 40 \8230, a crank angle sensor 50 \8230, an ACG starter motor 80 \8230, an ECU (control unit) 81 \8230, a rotation speed calculation mechanism 82 \8230, an ACG starter motor drive mechanism 83 \8230, a forward/reverse rotation determination unit 100 \8230, an engine starter device E \8230, an engine C \8230, a crankshaft Ne \8230, a rotation speed Ne1 \8230, a reverse rotation upper limit set value (threshold), ne2 \8230, a forward rotation upper limit set value (threshold), ne3 \8230andan engine start completion threshold.
Claims (7)
1. An engine starting device is provided with:
an ACG starter motor (50) that drives a crankshaft (C) of an engine (E) in a forward direction or a reverse direction and that generates power by the rotational force of the crankshaft (C);
a crank angle sensor (40) that detects a rotational state of the crankshaft (C); and
a control unit (80) that calculates the rotational speed (Ne) of the crankshaft (C) using the rotational state detected by the crank angle sensor (40) and controls the drive and power generation of the ACG starter motor (50),
the engine starting apparatus (100) is characterized in that,
the control unit (80) executes a swing back control for driving the crankshaft (C) in reverse rotation to a predetermined range when the engine (E) is started,
the control unit (80) reduces the output of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 1) during the swing-back control, and increases the output of the ACG starter motor (50) when the rotation speed (Ne) is less than or equal to the threshold value (Ne 1) during the swing-back control.
2. The engine starting device as recited in claim 1,
the control unit (80) drives the crankshaft (C) in the normal rotation direction after the swing-back control until the start of the engine (E) is completed,
the control unit (80) stops the drive of the ACG starter motor (50) when the rotation speed (Ne) exceeds a threshold value (Ne 2) during the drive in the normal rotation direction, and drives the ACG starter motor (50) when the rotation speed (Ne) is less than or equal to the threshold value (Ne 2) during the drive in the normal rotation direction.
3. The engine starting device according to claim 2,
the control unit (80) determines that the start of the engine (E) is completed and stops the drive of the ACG starter motor (50) when the rotation speed (Ne) exceeds an engine start completion threshold (Ne 3).
4. An engine starting device as defined in claim 3,
the detection of the predetermined range in which the reverse rotation driving is stopped in the swing-back control is performed by push-back in the vicinity of the compression top dead center.
5. The engine starting device as claimed in claim 4,
the crank angle sensor (40) includes a plurality of sensor elements,
the rotation speed calculation means (81) calculates the rotation speed (Ne) twice or more during one rotation of the crankshaft (C) using the plurality of sensor elements.
6. The engine starting device as recited in claim 5,
the predetermined range in which the reverse rotation driving is stopped in the swing-back control is a position slightly beyond the compression top dead center in the normal rotation direction.
7. A straddle-type vehicle provided with the engine starting device according to any one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-103778 | 2020-06-16 | ||
| JP2020103778 | 2020-06-16 | ||
| PCT/JP2021/014214 WO2021256050A1 (en) | 2020-06-16 | 2021-04-01 | Engine starting device, and saddle-ridden vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115715350A true CN115715350A (en) | 2023-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180041253.1A Pending CN115715350A (en) | 2020-06-16 | 2021-04-01 | Engine starting device and straddle-type vehicle |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP7284351B2 (en) |
| CN (1) | CN115715350A (en) |
| BR (1) | BR112022020066A2 (en) |
| TW (1) | TWI788877B (en) |
| WO (1) | WO2021256050A1 (en) |
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| EP1321667A1 (en) * | 2000-09-28 | 2003-06-25 | Mitsuba Corporation | Engine starter |
| JP2006266110A (en) * | 2005-03-22 | 2006-10-05 | Honda Motor Co Ltd | Rotating fluctuation controlling equipment of internal combustion engine |
| CN104169568A (en) * | 2012-04-03 | 2014-11-26 | 三菱电机株式会社 | Device for automatically stopping and restarting internal combustion engine |
| EP3147496A1 (en) * | 2015-09-28 | 2017-03-29 | Honda Motor Co., Ltd. | Engine start control system for saddle-ride type vehicles |
| CN109653888A (en) * | 2017-10-12 | 2019-04-19 | 丰田自动车株式会社 | The control device and control method of internal combustion engine |
| JP2020016205A (en) * | 2018-07-27 | 2020-01-30 | 本田技研工業株式会社 | Engine starting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4376119B2 (en) * | 2004-04-28 | 2009-12-02 | 本田技研工業株式会社 | Control device for internal combustion engine |
| JP5361590B2 (en) * | 2009-07-21 | 2013-12-04 | 本田技研工業株式会社 | Engine start control device |
-
2021
- 2021-04-01 BR BR112022020066A patent/BR112022020066A2/en unknown
- 2021-04-01 CN CN202180041253.1A patent/CN115715350A/en active Pending
- 2021-04-01 WO PCT/JP2021/014214 patent/WO2021256050A1/en active Application Filing
- 2021-04-01 JP JP2022532318A patent/JP7284351B2/en active Active
- 2021-06-11 TW TW110121270A patent/TWI788877B/en active
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| JP2000283010A (en) * | 1999-03-30 | 2000-10-10 | Honda Motor Co Ltd | Engine starter |
| EP1321667A1 (en) * | 2000-09-28 | 2003-06-25 | Mitsuba Corporation | Engine starter |
| JP2006266110A (en) * | 2005-03-22 | 2006-10-05 | Honda Motor Co Ltd | Rotating fluctuation controlling equipment of internal combustion engine |
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| EP3147496A1 (en) * | 2015-09-28 | 2017-03-29 | Honda Motor Co., Ltd. | Engine start control system for saddle-ride type vehicles |
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| JP2020016205A (en) * | 2018-07-27 | 2020-01-30 | 本田技研工業株式会社 | Engine starting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7284351B2 (en) | 2023-05-30 |
| JPWO2021256050A1 (en) | 2021-12-23 |
| TW202200893A (en) | 2022-01-01 |
| TWI788877B (en) | 2023-01-01 |
| WO2021256050A1 (en) | 2021-12-23 |
| BR112022020066A2 (en) | 2022-11-22 |
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