WO2021064890A1 - Système de démarrage pour moteur à combustion interne et équipement électrique le comprenant - Google Patents

Système de démarrage pour moteur à combustion interne et équipement électrique le comprenant Download PDF

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Publication number
WO2021064890A1
WO2021064890A1 PCT/JP2019/038895 JP2019038895W WO2021064890A1 WO 2021064890 A1 WO2021064890 A1 WO 2021064890A1 JP 2019038895 W JP2019038895 W JP 2019038895W WO 2021064890 A1 WO2021064890 A1 WO 2021064890A1
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WO
WIPO (PCT)
Prior art keywords
starter
engine
starter motor
case
controller
Prior art date
Application number
PCT/JP2019/038895
Other languages
English (en)
Inventor
Akihiro Kimura
Koji Kuriyagawa
Original Assignee
Honda Motor Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co., Ltd. filed Critical Honda Motor Co., Ltd.
Priority to PCT/JP2019/038895 priority Critical patent/WO2021064890A1/fr
Priority to CN201980100974.8A priority patent/CN114502836A/zh
Publication of WO2021064890A1 publication Critical patent/WO2021064890A1/fr

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Classifications

    • 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
    • F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • 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
    • F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
    • 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
    • F02N11/14—Starting of engines by means of electric starters with external current supply
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022—Engine speed
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
    • F02N2200/062—Battery current
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
    • F02N2200/063—Battery voltage
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
    • F02N2200/064—Battery temperature
    • 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
    • F02N2300/00—Control related aspects of engine starting
    • F02N2300/20—Control related aspects of engine starting characterised by the control method
    • F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start
    • 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
    • F02N3/00—Other muscle-operated starting apparatus
    • F02N3/02—Other muscle-operated starting apparatus having pull-cords
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]

Definitions

  • the present invention relates to a starting system for an internal combustion engine and a power equipment including the same.
  • a starting system for an internal combustion engine used for a common product is operated manually or electrically.
  • a starter motor is driven by electric power from a starter battery to perform a cranking operation, thereby starting the engine.
  • the timing for stopping the cranking operation by the starter motor is generally set in advance.
  • a starting system for an engine that stops the cranking operation by the starter motor in a case where a prescribed set time elapses or a complete explosion of the engine is detected based on a rotational speed of the engine (see, Japanese Unexamined Patent Application Publication No.2010-144619).
  • a primary object of the present invention is to provide a starting system for an internal combustion engine that can reduce useless driving of the starter motor, thereby suppressing electric power consumption of the starter battery to prolong a lifetime thereof.
  • one embodiment of the present invention provides a starting system (5) for an internal combustion engine (3), including: a starter switch (45) configured to accept a starting operation of the engine; a starter motor (21) configured to start the engine; a starter battery (22) configured to supply electric power to the starter motor; and a controller (27) configured to drive the starter motor by the electric power from the starter battery to perform a cranking operation of the engine in response to the starting operation of the engine, wherein the controller is configured to stop the starter motor in a case where a rotational speed of the engine is equal to or more than a first reference rotational speed before elapsing of a first set time period from a start of the starter motor, to stop the starter motor in a case where the rotational speed of the engine is equal to or more than a second reference rotational speed, or less than a third reference rotational speed that is lower than the second reference rotational speed after elapsing of the first set time period from the start of the starter motor and before elapsing of a second set
  • the first reference rotational speed and the second reference rotational speed are equal to each other.
  • the starter motor can be stopped at a more appropriate timing.
  • the starting system further includes a temperature sensor (33) configured to detect a temperature of the starter battery, wherein the controller is configured to start the starter motor in a case where the starter switch accepts the starting operation of the engine and the temperature of the starter battery detected by the temperature sensor is equal to or lower than a prescribed standard temperature.
  • a temperature sensor (33) configured to detect a temperature of the starter battery
  • the controller is configured to start the starter motor in a case where the starter switch accepts the starting operation of the engine and the temperature of the starter battery detected by the temperature sensor is equal to or lower than a prescribed standard temperature.
  • the starting system further includes: a main switch (44) configured to accept a power-on operation of a main power source (48); and a display unit (47) configured to display a remaining charge of the starter battery in response to the power-on operation to the main switch.
  • a main switch configured to accept a power-on operation of a main power source (48)
  • a display unit configured to display a remaining charge of the starter battery in response to the power-on operation to the main switch.
  • the display unit includes an optical indicator
  • the controller is configured to keep the optical indicator on in a case where the remaining charge of the starter battery is equal to or greater than a first threshold value, to blink the optical indicator in a case where the remaining charge of the starter battery is smaller than the first threshold value and equal to or greater than a second threshold value that is smaller than the first threshold value, and to keep the optical indicator off in a case where the remaining charge of the starter battery is smaller than the second threshold value.
  • the controller is configured to turn the optical indicator off in a case where the starter switch accepts the starting operation of the engine or in a case where an indication time has elapsed since the controller turns the optical indicator on or starts to blink the optical indicator.
  • the optical indicator can be turned off at an appropriate timing to save electric power.
  • the starting system further includes: a voltage sensor (34) configured to detect a voltage of the starter battery; and an electric current sensor (24) configured to detect an electric current flowing from the starter battery to the starter motor, wherein the controller is configured to stop the starter motor in a case where the voltage detected by the voltage sensor is equal to or higher than a set voltage and the electric current detected by the electric current sensor is equal to or smaller than a set electric current upon elapsing of a reference time period from the start of the starter motor.
  • a voltage sensor configured to detect a voltage of the starter battery
  • an electric current sensor (24) configured to detect an electric current flowing from the starter battery to the starter motor
  • the controller is configured to set the set voltage lower than an initial voltage of the starter battery by 0.5V and to set the set electric current equal to or smaller than 10A.
  • the engine includes: a rotatable crankshaft (12); and a generator (14) configured to generate electric power according to a rotation of the crankshaft, and the starter battery is chargeable by both of the generator and an outside power source (36).
  • the starter battery is constituted of a lithium-ion battery.
  • the lithium-ion battery is smaller and lighter than a lead-acid battery. Therefore, flexibility of a layout of the starter battery in a product can be improved by using the lithium-ion battery as the starter battery.
  • a power equipment (1) including: the starting system; an engine configured to be started by the starting system; and a working unit (4) fixedly connected to the engine to be rotated by a driving force of the engine.
  • Figure 1 is a block diagram showing a lawnmower according to an embodiment of the present invention.
  • Figure 2 is a flow chart showing an engine starting control.
  • Figure 3 is a graph showing changes of a rotational speed of an engine, a voltage of a starter battery, and a discharging electric current in a case where the engine cannot be started by the cranking operation.
  • Figure 4 is a flow chart showing turn-on control of an optical indicator.
  • the lawnmower 1 is, for example, a self-traveling device that travels by a driving force of a traveling motor (not shown). In other embodiments, the lawnmower 1 may be a hand-pushed device that travels while being pushed by a user.
  • the lawnmower 1 includes an internal combustion engine 3 (hereinafter referred to as "the engine 3") that generates a driving force, a blade 4 (an example of a working unit) that is rotated by the driving force of the engine 3, and a starting system 5 that starts the engine 3.
  • the engine 3 an internal combustion engine 3
  • the blade 4 an example of a working unit
  • the starting system 5 that starts the engine 3. The following describes each component of the lawnmower 1.
  • the engine 3 includes a piston 11 that can reciprocate, a crankshaft 12 that can be rotated in response to the reciprocation of the piston 11, a flywheel 13 that is fixed to the crankshaft 12, a generator 14 that generates AC power in response to a rotation of the crankshaft 12, and a rotational speed sensor 15 that detects a rotational speed X of the crankshaft 12 (hereinafter referred to as "the rotational speed X of the engine 3").
  • the crankshaft 12 extends along a vertical direction.
  • the flywheel 13 includes a ring gear 16.
  • blade 4 The blade 4 is fixedly connected to the lower end of the crankshaft 12. That is, the blade 4 is connected to the crankshaft 12 without a clutch. Therefore, compared with a case where the blade 4 is connected to the crankshaft 12 via a clutch, the configuration of the lawnmower 1 can be simplified. The blade 4 is always rotated in sync with the crankshaft 12. When the blade 4 is rotated, a lawn is mowed by the blade 4.
  • the starting system 5 includes a starter motor 21, a starter battery 22, an electric component 23, an electric current sensor 24, an operation/display device 25, and a controller 27. The following describes each component of the starting system 5.
  • the starter motor 21 includes a pinion gear 31.
  • the pinion gear 31 is movable between a protruding position where the pinion gear 31 meshes with the ring gear 16 of the flywheel 13 and a retracting position where the pinion gear 31 does not mesh with the ring gear 16 of the flywheel 13.
  • the starter battery 22 is constituted of a lithium-ion battery.
  • the lithium-ion battery is smaller and lighter than a lead-acid battery. Therefore, flexibility of a layout of the starter battery 22 in the lawnmower 1 can be improved by using the lithium-ion battery as the starter battery 22.
  • a first temperature sensor 33 is attached to the starter battery 22.
  • the first temperature sensor 33 detects a temperature of the starter battery 22.
  • a voltage sensor 34 is attached to the starter battery 22. The voltage sensor 34 detects a voltage of the starter battery 22.
  • the starter battery 22 is connected to the generator 14 via a processing circuit (not shown), and the AC power generated by the generator 14 is converted into DC power by the processing circuit to be supplied to the starter battery 22. Thereby, the starter battery 22 is charged by the generator 14.
  • the starter battery 22 is connected to a charging connector 35 that can be connected to an outside power source 36. When the outside power source 36 is connected to the charging connector 35, the outside power source 36 and the starter battery 22 are connected via the charging connector 35. Thereby, the starter battery 22 is charged by the outside power source 36. As described above, the starter battery 22 is chargeable by both of the generator 14 and the outside power source 36.
  • the electric component 23 is provided on a power line 38 that connects the starter motor 21 to the starter battery 22.
  • the electric component 23 includes a switching element 39, a short circuit protection unit 40, and a fuse 41.
  • the switching element 39 is constituted of a Field Effect Transistor (FET), for example.
  • FET Field Effect Transistor
  • the short circuit protection unit 40 detects a short circuit of the power line 38 to cut off an electric current flowing through the power line 38 or to limit the electric current flowing through the power line 38 to a prescribed limit value or less.
  • a second temperature sensor 42 is attached to the electric component 23.
  • the second temperature sensor 42 detects a temperature of the electric component 23.
  • the second temperature sensor 42 detects a temperature of the switching element 39, for example.
  • the second temperature sensor 42 may detect a temperature of the short circuit protection unit 40 or the fuse 41.
  • the electric current sensor 24 is constituted of a resistance, for example.
  • the electric current sensor 24 is provided on a detection line 43 that connects the starter motor 21 to the starter battery 22.
  • the electric current sensor 24 detects an electric current (hereinafter referred to as "the discharging electric current") flowing from the starter battery 22 to the starter motor 21 when the starter battery 22 discharges.
  • the operation/display device 25 includes a main switch 44, a starter switch 45, a display 46 (an example of a notification unit and an operation unit), and an optical indicator 47.
  • the main switch 44 is a switch that accepts a power-on operation of a main power source 48 by a user.
  • the starter switch 45 is a switch that accepts a starting operation of the engine 3 by a user.
  • the display 46 is constituted of a liquid crystal panel, for example.
  • the optical indicator 47 is constituted of an LED, for example, and can be kept on and blink.
  • the controller 27 is constituted of a microcomputer mounted on the starter battery 22, for example.
  • the controller 27 is connected to the rotational speed sensor 15, the electric current sensor 24, the first temperature sensor 33, the voltage sensor 34, and the second temperature sensor 42, and receives signals from these sensors.
  • the controller 27 is connected to the electric component 23 and sends/receives a signal to/from the electric component 23.
  • the controller 27 is connected to the operation/display device 25 and sends/receives a signal to/from the operation/display device 25.
  • cranking operation When the starter switch 45 accepts the starting operation of the engine 3 by a user, a starting signal is sent from the starter switch 45 to the controller 27.
  • the controller 27 receives the starting signal from the starter switch 45, the controller 27 sends a switching signal to the switching element 39 to switch the switching element 39 from OFF to ON. Accordingly, electric power is supplied from the starter battery 22 to the starter motor 21, and the starter motor 21 is driven by the electric power from the starter battery 22.
  • the starter motor 21 When the starter motor 21 is driven in this way, the pinion gear 31 of the starter motor 21 moves from the retracting position to the protruding position to mesh with the ring gear 16 of the flywheel 13. In this way, the cranking operation is started in response to the switching signal from the controller 27.
  • the flywheel 13 and the crankshaft 12 start to rotate integrally by the driving force of the starter motor 21, and the first ignition of a mixture is performed in the engine 3. Thereafter, the pinion gear 31 of the starter motor 21 moves from the protruding position to the retracting position, and the pinion gear 31 of the starter motor 21 stops meshing with the ring gear 16 of the flywheel 13. Thereafter, if the load of the lawn on the blade 4 is small, the rotational speed X of the engine 3 increases, and the engine 3 is started. On the other hand, if the load of the lawn on the blade 4 is large, the rotational speed X of the engine 3 decreases rapidly, and the engine 3 cannot be started.
  • the starter switch 45 accepts the starting operation of engine 3 by the user (step S101). Along with this, a starting signal is sent from the starter switch 45 to the controller 27.
  • the controller 27 determines whether the temperature of the starter battery 22 detected by the first temperature sensor 33 is equal to or lower than a prescribed standard temperature T (step S102).
  • step S102 In a case where a determination in step S102 is No (in a case where the temperature of the starter battery 22 is higher than the standard temperature T), the controller 27 ends the engine starting control without driving the starter motor 21. On the other hand, in a case where the determination in step S102 is Yes (in a case where the temperature of the starter battery 22 is equal to or lower than the standard temperature T), the controller 27 starts the starter motor 21 (step S103). That is, the controller 27 starts the cranking operation.
  • the controller 27 determines whether 1.5 seconds (an example of a first set time period) have elapsed from the start of the starter motor 21 (step S104).
  • step S104 determines whether the rotational speed X of the engine 3 is equal to or more than 1400rpm (an example of a first reference rotational speed) (step S105).
  • step S105 In a case where a determination in step S105 is Yes (in a case where the rotational speed X of the engine 3 is equal to or more than 1400rpm), the controller 27 stops the starter motor 21 (step S106), and ends the engine starting control. On the other hand, in a case where the determination in step S105 is No (in a case where the rotational speed X of the engine 3 is less than 1400rpm), the controller 27 makes the determination in step S104 again.
  • step S104 determines whether 3.0 seconds (an example of a second set time period) have elapsed from the start of the starter motor 21 (step S107).
  • step S107 In a case where a determination in step S107 is Yes (in a case where 3.0 seconds have elapsed from the start of the starter motor 21), the controller 27 stops the starter motor 21 (step S106), and ends the engine starting control. On the other hand, in a case where the determination in step S107 is No (in a case where 3.0 seconds have not elapsed from the start of the starter motor 21), the controller 27 determines whether the rotational speed X of the engine 3 is equal to or more than 1400rpm (an example of a second reference rotational speed) (step S108).
  • 1400rpm an example of a second reference rotational speed
  • step S108 In a case where a determination in step S108 is Yes (in a case where the rotational speed X of the engine 3 is equal to or more than 1400rpm), the controller 27 stops the starter motor 21 (step S106), and ends the engine starting control. On the other hand, in a case where the determination in step S108 is No (in a case where the rotational speed X of the engine 3 is less than 1400rpm), the controller 27 determines whether the rotational speed X of the engine 3 is equal to or more than 250rpm (an example of a third reference rotational speed) (step S109).
  • step S109 In a case where a determination in step S109 is No (in a case where the rotational speed X of the engine 3 is less than 250rpm), the controller 27 stops the starter motor 21 (step S106), and ends the engine starting control. On the other hand, in a case where the determination in step S109 is Yes (in a case where the rotational speed X of the engine 3 is equal to or more than 250rpm), the controller 27 makes the determination in step S104 again.
  • the controller 27 stops the starter motor 21 in a case where a rotational speed X of the engine 3 is equal to or more than 1400rpm (an example of a first reference rotational speed) before elapsing of 1.5 seconds (an example of a first set time period) from the start of the starter motor 21.
  • the controller 27 stops the starter motor 21 in a case where the rotational speed X of the engine 3 is equal to or more than 1400rpm (an example of a second reference rotational speed), or less than 250rpm (an example of a third reference rotational speed) after elapsing of 1.5 seconds (an example of a first set time period) from the start of the starter motor 21 and before elapsing of 3.0 seconds (an example of a second set time period) from the start of the starter motor 21.
  • driving of the starter motor 21 can be stopped early in a case where the rotational speed X of the engine 3 does not reach 250 rpm even after elapsing of 1.5 seconds from the start of the starter motor 21, i.e.
  • the starter motor 21 can be stopped at a more appropriate timing.
  • the controller 27 starts the starter motor 21 in a case where the starter switch 45 accepts the starting operation of the engine 3 and the temperature of the starter battery 22 detected by the first temperature sensor 33 is equal to or lower than a prescribed standard temperature. Thereby, it is possible to prevent the starter motor 21 from being started in a state where the temperature of the starter battery 22 is high. Therefore, a deterioration speed of the starter battery 22 can be lowered to further prolong a lifetime of the starter battery 22.
  • Figure 3 shows changes of the rotational speed X of the engine 3, the voltage of the starter battery 22, and the discharging electric current in a case where the engine 3 cannot be started by the cranking operation.
  • the numbers shown without brackets on the right end of Figure 3 indicate the discharging electric current, and the numbers shown with brackets on the right end of Figure 3 indicate the voltage of the starter battery 22.
  • the rotational speed X of the engine 3 decreases rapidly after elapsing of about one second from a time t1 when the starter motor 21 is started (when the switching element 39 is switched from OFF to ON), in a case where the engine 3 cannot be started by the cranking operation.
  • the voltage of the starter battery 22 gets close to an initial voltage Vo (the voltage before the start of the starter motor 21) and the discharging electric current decreases rapidly after elapsing of over 0.5 seconds from the time t1 when the starter motor 21 is started in the case where the engine 3 cannot be started by the cranking operation.
  • the controller 27 regularly determines whether the voltage of the starter battery 22 detected by the voltage sensor 34 is equal to or higher than a prescribed set voltage (in the present embodiment, a voltage lower than the initial voltage Vo by 0.5V) and the discharging electric current detected by the electric current sensor 24 is equal to or smaller than 10A (an example of a set electric current).
  • a prescribed set voltage in the present embodiment, a voltage lower than the initial voltage Vo by 0.5V
  • 10A an example of a set electric current
  • the controller 27 keeps on driving the starter motor 21.
  • the stop determination is No (in a case where the voltage of the starter battery 22 detected by the voltage sensor 34 is lower than the set voltage, or in a case where the discharging electric current detected by the electric current sensor 24 is larger than 10A)
  • the controller 27 keeps on driving the starter motor 21.
  • the stop determination is Yes (in a case where the voltage of the starter battery 22 detected by the voltage sensor 34 is equal to or higher than the set voltage and the discharging electric current detected by the electric current sensor 24 is equal to or smaller than 10A)
  • the controller 27 stops the starter motor 21.
  • the controller 27 stops the starter motor 21 at the time t2. Thereby, useless driving of the starter motor 21 can be further reduced, so that electric power consumption of the starter battery 22 can be more sufficiently suppressed to further prolong a lifetime of the starter battery 22.
  • the controller 27 sets the set voltage lower than the initial voltage Vo of the starter battery 22 by 0.5V and sets the set electric current equal to or smaller than 10A. Thereby, driving of the starter motor 21 can be stopped at an appropriate timing.
  • the main switch 44 accepts the power-on operation of the main power source 48 by a user (step S201). Accordingly, a power-on signal of the main power source 48 is sent from main switch 44 to the controller 27.
  • the controller 27 determines whether a remaining charge B of the starter battery 22 is equal to or greater than 40% (an example of a first threshold value) (step S202).
  • step S202 determines whether the remaining charge B of the starter battery 22 is equal to or greater than 20% (an example of a second threshold value) (step S204).
  • step S204 determines whether the remaining charge B of the starter battery 22 is equal to or greater than 20%.
  • the controller 27 sends a blink signal to the optical indicator 47 to blink the optical indicator 47 (step S205).
  • the controller 27 keeps the optical indicator 47 off (step S206), and ends the turn-on control of optical indicator 47.
  • step S207 While the controller 27 keeps the optical indicator 47 on in step S203 or blinks the optical indicator 47 in step S205, the controller 27 determines whether 5 seconds (an example of an indication time) have elapsed since the controller 27 turns the optical indicator 47 on or starts to blink the optical indicator 47 (step S207).
  • step S207 determines whether the starter switch 45 accepts the starting operation of the engine 3 by a user (step S208).
  • step S208 In a case where a determination in step S208 is No (in a case where the starter switch 45 does not accept the starting operation of the engine 3 by a user), the controller 27 makes the determination in step S207 again. On the other hand, in a case where the determination in step S208 is Yes (in a case where the starter switch 45 accepts the starting operation of the engine 3 by a user), the controller 27 turns and keeps the optical indicator 47 off (step S206), and ends the turn-on control.
  • the optical indicator 47 displays the remaining charge B of the starter battery 22 in response to the power-on operation of the main power source 48 to the main switch 44. Thereby, it is possible to make a user aware of the remaining charge B of the starter battery 22 when the main power source 48 is powered on, so that the starting system 5 becomes more convenient.
  • the controller 27 keeps the optical indicator 47 on in a case where the remaining charge B of the starter battery 22 is equal to or greater than 40% (an example of the first threshold value), blinks the optical indicator 47 in a case where the remaining charge B of the starter battery 22 is smaller than 40% and equal to or greater than 20% (an example of the second threshold value), and keeps the optical indicator 47 off in a case where the remaining charge B of the starter battery 22 is smaller than 20%.
  • the controller 27 keeps the optical indicator 47 on in a case where the remaining charge B of the starter battery 22 is equal to or greater than 40% (an example of the first threshold value), blinks the optical indicator 47 in a case where the remaining charge B of the starter battery 22 is smaller than 40% and equal to or greater than 20% (an example of the second threshold value), and keeps the optical indicator 47 off in a case where the remaining charge B of the starter battery 22 is smaller than 20%.
  • the starter switch 45 accepts the starting operation of the engine 3 by a user
  • 5 seconds an example of the indication time
  • the controller 27 turns the optical indicator 47 off. Therefore, the optical indicator 47 can be turned off at an appropriate timing to save electric power.

Abstract

Selon la présente invention, pour prolonger la durée de vie d'une batterie de démarrage, un système de démarrage (5) pour un moteur à combustion interne (3) comprend: une batterie de démarrage (22) configurée pour fournir de l'énergie électrique à un moteur de démarreur (21); et un dispositif de commande (27) configuré pour entraîner le moteur de démarreur (21) par la puissance électrique provenant de la batterie de démarrage (22), le dispositif de commande (27) étant configuré pour arrêter le moteur de démarreur (21) dans un cas où une vitesse de rotation du moteur (3) est égale ou supérieure à une première vitesse de rotation de référence avant l'écoulement d'une première période de temps définie et pour arrêter le moteur de démarreur (21) dans un cas où la vitesse de rotation du moteur (3) est égale ou supérieure à une deuxième vitesse de rotation de référence, ou inférieure à une troisième vitesse de rotation de référence après l'écoulement de la première période de temps définie et avant l'écoulement d'une deuxième période de temps définie.
PCT/JP2019/038895 2019-10-02 2019-10-02 Système de démarrage pour moteur à combustion interne et équipement électrique le comprenant WO2021064890A1 (fr)

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PCT/JP2019/038895 WO2021064890A1 (fr) 2019-10-02 2019-10-02 Système de démarrage pour moteur à combustion interne et équipement électrique le comprenant
CN201980100974.8A CN114502836A (zh) 2019-10-02 2019-10-02 内燃发动机的起动系统和包括其的动力设备

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080258472A1 (en) * 2005-05-26 2008-10-23 Renault Trucks Method of Controlling Power Supply to an Electric Starter
US20090020092A1 (en) * 2007-07-18 2009-01-22 Kokusan Denki Co., Ltd. Engine starting device
JP2010144619A (ja) 2008-12-18 2010-07-01 Fuji Heavy Ind Ltd エンジンの始動制御装置
US20110202263A1 (en) * 2010-02-15 2011-08-18 Denso Corporation Control apparatus for controlling on-vehicle starter for starting engine
WO2018158679A1 (fr) * 2017-02-28 2018-09-07 Tvs Motor Company Limited Système de démarreur destiné à un véhicule

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4893779B2 (ja) * 2009-05-21 2012-03-07 株式会社デンソー スタータ制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080258472A1 (en) * 2005-05-26 2008-10-23 Renault Trucks Method of Controlling Power Supply to an Electric Starter
US20090020092A1 (en) * 2007-07-18 2009-01-22 Kokusan Denki Co., Ltd. Engine starting device
JP2010144619A (ja) 2008-12-18 2010-07-01 Fuji Heavy Ind Ltd エンジンの始動制御装置
US20110202263A1 (en) * 2010-02-15 2011-08-18 Denso Corporation Control apparatus for controlling on-vehicle starter for starting engine
WO2018158679A1 (fr) * 2017-02-28 2018-09-07 Tvs Motor Company Limited Système de démarreur destiné à un véhicule

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