CN107532560B - Internal combustion engine load drive device and internal combustion engine ignition device - Google Patents
Internal combustion engine load drive device and internal combustion engine ignition device Download PDFInfo
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- CN107532560B CN107532560B CN201680004439.9A CN201680004439A CN107532560B CN 107532560 B CN107532560 B CN 107532560B CN 201680004439 A CN201680004439 A CN 201680004439A CN 107532560 B CN107532560 B CN 107532560B
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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
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/06—Other installations having capacitive energy storage
- F02P3/08—Layout of circuits
Abstract
Igniter (10) is powered by the generator (3) that internal combustion engine (2) is driven.Igniter (10) includes control device (17).Control device (17) passes through the switching signal driving switch element (32) with longer turn-on time (TonL) when supply voltage (VB) is lower than predetermined threshold voltage.Control device (17) passes through the switching signal driving switch element (32) with shorter turn-on time TonS when supply voltage (VB) is higher than predetermined threshold voltage.Turn-on time (TonL) is longer than turn-on time (TonS).Shorter turn-on time (TonS) can inhibit to flow through the electric current of the circuit with transformer (31).Therefore, overvoltage protection can be realized while maintaining ignition function.
Description
Cross-reference to related applications
Based on Japanese patent application 2016-065773 that the application was submitted by March 29th, 2016, basis application
Disclosure be used as referring to being incorporated herein
Technical field
The present invention relates to the igniting dresses of the internal combustion engine load drive device and internal combustion engine with high voltage protection function
It sets.
Background technique
Patent document 1-4 discloses the device with defencive function.The protective device, in the generator that internal combustion engine is driven
When output over-voltage, the power supply circuit of generator is protected.These once detecting overvoltage, then fill igniting in the prior art
It sets and stops working.As a result, the output voltage of generator declines, circuit is protected.
Existing technical literature
Patent document
Patent document 1: special open 2004-324516 bulletin
Patent document 2: special open 2005-320892 bulletin
Patent document 3: special open 2011-208522 bulletin
Patent document 4: special open 2012-17697 bulletin
Summary of the invention
In the prior art, the internal-combustion engine rotational speed dramatic decrease when overvoltage phenomenon occurs.In this way, then defeated by internal combustion engine
Equipment out, function are lost rapidly sometimes.For example, its function is lost by the electrical equipment that generator exports, with internal combustion
Machine output is the vehicle of driving dynamics, and speed changes.
In above-mentioned viewpoint or unmentioned other viewpoints, it is desirable that use internal combustion engine load drive device and internal combustion engine
Igniter makes further improvements.
It it is an object of the invention to provide a kind of overvoltage protection of achievable circuit, lose electrical equipment will not
The internal combustion engine load drive device and internal combustion engine ignition device of its function.
It is another object of the invention to provide one kind to realize circuit while inhibiting internal combustion engine rotation speed fluctuation
The internal combustion engine load drive device and internal combustion engine ignition device of overvoltage protection.
Internal combustion engine load drive device of the present invention includes: converter circuit (14), with inductance element
(31) and to inductance element the switch element (32) being discontinuously powered, and to the supply voltage (VB) inputted from power supply terminal (11)
It is converted；Control device (17), driving switch element.Control device includes: determination unit (171,172), determines power supply
Voltage (VB) is less than predetermined threshold voltage (Vth) and is also above predetermined threshold voltage (Vth)；Conventional control portion (173,175),
When supply voltage (VB) is lower than predetermined threshold voltage (Vth), driven by the switching signal with the 1st turn-on time (TonL)
Dynamic switch element；It protects control unit (174,175), when supply voltage VB is higher than predetermined threshold voltage (Vth), by having
The switching signal driving switch element of 2nd turn-on time (TonS), wherein the 2nd turn-on time (TonS) was shorter than the described 1st and connects
Time.
The internal combustion engine load drive device being related to according to the present invention, when supply voltage is lower than threshold voltage, switch member
Part is driven by the switching signal with the 1st turn-on time.Converter circuit can realize electrical power conversion as a result,.When supply voltage height
When threshold voltage, switch element is driven by the switching signal with the 2nd turn-on time.Wherein, the 2nd turn-on time connect than the 1st
The logical time is short.Converter circuit also can be realized electrical power conversion when supply voltage is very high as a result,.Moreover, the shorter the 1st connects
Time inhibits the electric current for flowing through converter circuit.Overcurrent caused by thereby inhibiting because of supply voltage height, protects circuit.
Internal combustion engine ignition device of the present invention includes: above-mentioned internal combustion engine load drive device and passes through output
The electric current that terminal provides generates the ignition coil (7) of high voltage, and load circuit is CDI (15) circuit.It is related to according to the present invention
Internal combustion engine ignition device can realize the overvoltage protection of circuit while inhibiting internal-combustion engine rotational speed fluctuation.
Multiple embodiments disclosed in this specification are to reach respective purpose, using different technology hand
Section.The parantheses internal symbol recorded in claims and claim illustratively indicates itself and aftermentioned embodiment phase
The corresponding relationship for answering part is not intended that and limits technical scope of the invention.Purpose, feature and effect disclosed in this specification
Fruit can become more fully apparent and define referring to aftermentioned detailed description and attached drawing.
Detailed description of the invention
Fig. 1 is the block diagram for the internal-combustion engine system that first embodiment is related to.
Fig. 2 is to show the flow chart that processing is controlled in first embodiment.
Fig. 3 is the chart for indicating to control processing in first embodiment.
Fig. 4 is the exemplary waveforms for indicating routine operation in first embodiment
Fig. 5 is the exemplary waveforms for indicating to protect operation in first embodiment.
Specific embodiment
Illustrate multiple embodiments referring to the drawings.In multiple embodiments, for functionally and/or in structure
Corresponding part and/or relevant portion add identical or only hundred or more the different appended drawing reference of numerical digit sometimes.About
Corresponding part and/or associated section are referred to the description of other embodiments.
1st embodiment
Fig. 1 show the internal-combustion engine system 1 as one embodiment.Internal-combustion engine system 1 has dynamic as internal-combustion engine system 1
The internal combustion engine (ENG) 2 in power source.Internal combustion engine 2 is spark-ignited internal combustion engine.Internal combustion engine 2 is using gasoline as fuel, i.e., so-called gasoline
Machine.Internal-combustion engine system 1 has the generator (ACG) 3 driven by internal combustion engine 2.Generator 3 is alternating current generator.Internal-combustion engine system 1
While the generator system supplied electric power by generator 3 is provided, ground run vehicle, ship, aircraft, engineering can also be provided
The dynamical system of machinery etc..In the present embodiment, internal-combustion engine system 1 is mounted in the small vehicles such as motorcycle.
Internal-combustion engine system 1 is configured to the power supply device that electric loading mounted on a vehicle powers and drives electric loading.
Internal-combustion engine system 1 includes the internal combustion engine load drive device for being used to drive electric loading.Sometimes electric loading, which will include, makes internal combustion engine 2
The electric equipments of work and additional electrical equipment.Electric equipments include sometimes such as starter motor, igniter and/
Or fuel provides device.Internal-combustion engine system 1 includes the internal combustion engine ignition device for powering to igniter.Other electrically set
It include such as headlamp, blinker and/or measuring instrumentss when having.Equipment component in these electrical equipments, sometimes
Temporary needs are higher than the big electric power that supply voltage can provide electric power.Internal combustion engine load drive device has electric power translation function
To provide temporarily required big electric power.
Internal-combustion engine system 1 can also be configured to a vehicle driving power source.Internal combustion engine 2 is connected by speed changer
Into the propulsive mechanism of vehicle.Therefore, when the increase and decrease of the revolving speed of internal combustion engine 2, speed, sound etc. change, vehicle driver
It may feel that these variations.If unexpected change occurs for revolving speed, vehicle driver feels under the weather sometimes.
Internal-combustion engine system 1 has power conversion circuit (REC-REG) 4.Power conversion circuit 4 has rectification circuit sometimes
(REC) and voltage regulator circuit (REG).The AC rectification exported by generator 3 is converted into direct current and defeated by rectification circuit
Out.The voltage exported by generator 3 is adjusted to scheduled adjustment voltage by voltage regulator circuit.For example, being exported by generator 3
Voltage be adjusted to about 14V.
Internal-combustion engine system 1 has battery 5, the power charge exported by power conversion circuit 4.Battery 5, Xiang Yong
In the electric equipments power supply such as starting motor of starting internal combustion engine 2.Alternatively, battery 5, also to other power supplies such as headlamp.
Internal-combustion engine system 1 has igniter 10.Igniter 10 by generator 3, power conversion circuit 4 and stores
The electric power that battery 5 provides generates the pilot spark for making internal combustion engine 2 work.Igniter 10 includes firing circuit 6, ignition coil 7
And spark plug 8.Firing circuit 6 is powered to ignition coil 7, and disconnects being powered by phased manner.Ignition coil 7 generates spark plug
High voltage needed for issuing pilot spark.Firing circuit 6, to make spark plug generate pilot spark, control in scheduled igniting sequential
Make the interrupting time being powered to ignition coil 7.Also, firing circuit 6 has the energization electric power for adjusting ignition coil 7
Electric power translation function.Firing circuit 6 has for providing the boost function of big electric power to ignition coil 7.
Ignition coil 7 generates high voltage using the primary coil and secondary coil of electromagnetic coupling.Therefore, ignition coil 7 with
And the igniter 10 comprising it, it is irritability electric loading.Firing circuit 6, by powering to irritability electric loading, providing makes to feel
The irritability load driving circuits or irritability electric loading power circuit of answering property electric loading work.Ignition coil 7 is intermittent
Ground generates high voltage.Therefore, ignition coil 7 and the igniter 10 including it, alternatively referred to as intermittence is by driving electric loading.
Firing circuit 6 provides the intermittent intermittent loads driving circuit or intermittent load power circuit for exporting big electric power.
Firing circuit 6 has power supply terminal 11.Firing circuit 6 receives electric power by power supply terminal.Power supply terminal 11 is connected
It is connected to power conversion circuit 4 and battery 5.Firing circuit 6 has the diode that can receive the electric power from power supply terminal
12.Firing circuit 6 passes through 12 input supply voltage VB of power supply terminal 11 and diode.Diode 12, in 5 misconnection of battery
In the case where protect firing circuit 6.Diode 12 can be referred to as protection element.The protection member other than diode 12 can also be used
Part, such as resistive element, switch element etc. protect firing circuit 6.
Firing circuit 6 has voltage detecting circuit 13.Voltage detecting circuit 13, the telecommunications of output display supply voltage VB
Number.In the illustrated embodiment, voltage detecting circuit 13 is provided by bleeder circuit.Bleeder circuit have be connected in series resistance 21,
22.Bleeder circuit is connected in parallel with power supply terminal 11.
Firing circuit 6 has DC-DC converter circuit 14 (hereinafter referred to as converter circuit 14).Converter circuit 14, it is right
The supply voltage VB inputted by power supply terminal 11 is converted.Converter circuit 14 is also known as booster circuit.
Converter circuit 14 has transformer 31, this transformer is insulated type transformer.Transformer 31 is inductive element.
Transformer 31 includes the primary coil powered by power supply terminal and the secondary coil for being connected to aftermentioned load circuit.
Converter circuit 14 has switch element 32.Switch element 32 can discontinuously lead to the primary coil of transformer 31
Electricity is arranged in series in by the closed circuit of power supply terminal 11 and primary coil.Switch element 32 is by field effect transistor
FET is provided.Switch element 32 can be provided by the various elements such as power transistor, insulated gate bipolar transistor IGBT.
Converter circuit 14 has rectifier cell 33 and capacitor 34.Rectifier cell 33 is configured in comprising transformer 31
In the closed circuit of secondary coil.Rectifier cell 33 is provided by diode.Capacitor 34 is configured in comprising 31 grades of transformer
In the closed circuit of coil.Capacitor 34 passes through the power charge provided by converter circuit 14.Capacitor 34 is also after constituting
State the element of a part of CDI circuit 15.
Switch element 32 controls it by aftermentioned control device 17 and is opened and closed repeatedly.Switch element 32 is controlled as follows: at one
In drive cycle, it is switched to on-state from off-state, turn-on time Ton is switched to disconnection from on-state again later
State maintains off-state in entire turn-off time Toff.In addition, switch element 32 is controlled as repeating multiple driving weeks
Phase.This control is referred to as switch driving, switch control or PWM control.
Switch element 32 is actuated to charge in the interim for making capacitor 34 between the duration of ignition and the duration of ignition
To predetermined voltage level.For example, switch element 32 is opened and closed repeatedly according to preset switching sequence.Pass through switch element 32
Switching, the primary side of transformer 31, which induces, generates high voltage.High voltage is rectified by rectifier cell 33, and is filled with capacitor 34.
Like this, converter circuit 14 is switched driving by switch element 32, gradually charges to capacitor 34.As a result,
Capacitor 34 is gradually electrically charged, and condenser voltage will be gradually increasing.
Firing circuit 6 has CDI circuit 15.CDI is capacitive discharge ignition (Capacitor Discharge
Ignition the meaning).CDI circuit 15 is the load circuit powered by converter circuit 14.CDI circuit 15 is by carrying out self-capacitance
The electric discharge of device 34 provides primary current to ignition coil 7.CDI circuit 15 provides big energy to the primary coil of ignition coil 7
Amount.The primary side output of ignition coil 7 can steadily generate high voltage as a result,.As a result, it is possible to so that spark plug 8 is stablized real estate
Raw strong spark.
CDI circuit 15 has thyristor 41.Thyristor 41, which is provided, to exist for being opened and closed comprising capacitor 34 and ignition coil 7
Interior discharge circuit, that is, closed circuit switch element.Since thyristor 41 is triggered conducting, primary current is by 34 quilt of capacitor
It is provided to ignition coil 7.Since thyristor 41 is turned off, primary current is interrupted.Above-mentioned capacitor 34 is also CDI circuit 15
A part.
Firing circuit 6 has power circuit (PWSP) 16.Power circuit 16 is for providing surely to aftermentioned control device 17
The circuit of voltage source.Power circuit 16 exports the voltage of microcomputer, such as 5V.Power circuit 16 is by voltage dropping power supply electricity
Pressure VB and export the reduction voltage circuit of regulated power supply.Power circuit 16, control can also be protected when supply voltage VB becomes excessively high by having
The defencive function of device 17 processed.
Firing circuit 6 has control device (CNTL).Control device 17 by switch element 32 provide switching signal come
Driving switch element 32.In addition, firing circuit 6 has clock circuit 18.Clock circuit 18 provides control device 17 and executes operation
Time signal needed for processing.
Control device 17 is electronic control unit (Electronic Control Unit).Control device has at least one
A arithmetic processing apparatus (CPU) and at least one processor device as storage medium to store program and data
(MMR).Control device 17, by having the offer of the microcomputer of computer readable storage medium.Storage medium is deposited to be non-instantaneous
Store up the non-transitory tangible media of computer-readable program.Storage medium can be mentioned by semiconductor memory or hard disk etc.
For.Controller 17 can be provided by single computer or by one group of computer resource of data communication equipment connection.Program
It is executed by control device 17, so that control device 17 is functioned as the device that this specification is recorded, and remembers this specification
The method of load is executed.
Control device 17 provides various elements.At least a part of of these elements can be referred to as executing function
Block (block).In other viewpoints, these elements it is at least a part of can be used as structure be interpreted module or
For part.The means and/or function that control device provides, can be by being stored in the software of tangible storage device and executing it
Computer, only software, only hardware or their combination provide.For example, control device 17 is by the electronics as hardware
When circuit provides, it can be provided by digital circuit or analog circuit, wherein digital circuit includes multiple logic circuits.
Control device 17 has power supply terminal Vcc, receives the stabilized power supply from power circuit 16.Control device 17 by
Power circuit 16 is protected, against the too high voltages from supply voltage VB.Control device 17 has input terminal Vin, defeated
Enter to indicate the signal of the supply voltage VB from voltage detecting circuit 13.The signal for being input to input terminal Vin, which is stored in, to be deposited
In storage device MMR.Control device 17 has the 1st output terminal OUT1, exports the signal to switch driving switch element 32.
The signal for being output to the 1st output terminal OUT1 has scheduled duty ratio Dt.Control device 17 has the 2nd output terminal
OUT2, output are used for the signal of triggering and conducting thyristor 41.
Control device 17 is also boosting controller, operates converter circuit 14 to charge to capacitor 34.Control dress
Set switching signal of 17 outputs for switch element 32.Switching signal is configured to match with the charge characteristic of capacitor 34.
For example, in the period of switching signal, be configured to the charging progress extent with capacitor 34 and gradually shorten.Switch
The turn-on time Ton of signal can be set according to supply voltage VB.The duty ratio of switching signal, can be set as with capacitor
The charging progress extent of device 34 and become larger.Duty ratio Dt, which is based on turn-on time Ton and turn-off time Toff, to be expressed as
Dt=Ton/ (Ton+Toff).
Switching signal, the time interval being set to light a fire in primary igniting and next time between, capacitor 34 is filled
Electricity arrives predetermined voltage level.Switching signal corresponds to the pass converter circuit 14 with the step-by-step movement in asymptotic expression or other viewpoints
Charging modes charge a series of required charging timing to capacitor 34.A series of this charging timing includes multiple drive cycles.
In a drive cycle, switch element 32 is switched to on-state by off-state, all maintains in entire turn-on time Ton
After on-state, and off-state is switched to by on-state, maintains off-state always in entire turn-off time Toff.
Control device 17 starts a series of charging timing after primary igniting.Control device 17, need into
Row is lighted a fire next time before, terminate a series of charging timing.Control device 17 is battery charge controller, is executed for by capacitor
34 are charged to a series of charging timing of predetermined voltage level.
A series of charging timing, for example, can be characterized sometimes by the number of drive cycle.A series of charging timing, example
Such as, it can be characterized sometimes by turn-on time Ton.A series of charging timing, for example, can be characterized sometimes by turn-off time.
A series of charging timing, for example, can be characterized sometimes by the duty ratio Dt in drive cycle.A series of charging timing, sometimes
It can be characterized at least two combination in number of pass times, turn-on time Ton, turn-off time Toff and duty ratio Dt.
In the present embodiment, a series of charging timing are characterized by turn-on time Ton and turn-off time Toff.
Control device 17 gradually makes the duty ratio Dt of switching signal change in a series of charging timing.Duty ratio
Dt is set to charge with bio-occlusion capacitor 34.For example, setting lesser duty ratio at a series of initial stage of charging timing
Dt, later period set biggish duty ratio Dt.Duty ratio Dt, can be in the case where turn-on time be fixed, by making turn-off time
Toff changes and changes, and can also be changed and changing turn-on time Ton in the case where turn-off time is fixed.Duty
It, can also be by changing both turn-on time Ton and turn-off time Toff and all variation than Dt.
Control device 17 generates pilot spark by triggering and conducting thyristor when igniting sequential arrives.Control device 17
It is also an ignition control device.Control device 17 can have the rotation angle detection whether to arrive for detecting igniting sequential
Device.Rotation angle detection circuitry is arranged in internal combustion engine 2, for example, it is in base position output signal.It is attached to be not shown in the figure
Rotation angle detection apparatus.
It can be described as separated exciting vibration by the structure of the switching signal exciting converter circuit 14 generated using control device 17
It swings, wherein control device 17 is used to carry out ignition control by clock circuit 18.In contrast, by constitute oscillating circuit with
The structure of exciting converter circuit can be described as auto-excitation type oscillation.For example, can use self-excited oscillation circuit, response converter electricity
The secondary-side voltage on road 14 is switched to primary coil and is powered.When using self-excited oscillation circuit, according to the element of oscillating circuit
Constant, such as RC time constant, switching frequency and/or duty ratio may change.For example, special according to the temperature of element
Property, conduction time and duty ratio can change.As a result, the temperature characterisitic of element significantly affects converter sometimes
Charge efficiency of the circuit 14 to CDI circuit 15.
Control device 17 constitutes separate excitation oscillation mode power conversion circuit.Control device 17 is one using clock circuit 18
Microcomputer.Therefore, it can export it in correct time interval and correctly timing and export changed rectangle
Impulse wave.Therefore, inevitable temperature characterisitic bring adverse effect is able to suppress in self-maintained circuit.
Control device 17, when supply voltage VB is excessively high, and for protect converter circuit 14 and CDI circuit 15 from
The protective device of high voltage damage.Control device 17 can prevent high voltage to 15 bring of converter circuit 14 and CDI circuit
Damage.Control device 17 can also continue firing action when supply voltage VB is within the scope of overvoltage.At supply voltage VB
When normal voltage range, the turn-on time Ton of switch element 32 is set as converter circuit 14 by control device 17 to be made
It is charged with normal voltage to converter 34.In the present embodiment, in normal voltage range, it is set with longer turn-on time
TonL.When supply voltage VB is excessively high, the turn-on time Ton of switch element 32 is set as converter circuit 14 by control device 17
Overvoltage can be used as the charging of converter 34.In the present embodiment, when being provided with the 2nd in overvoltage range compared with being shorted logical
Between TonS.1st turn-on time TonL is longer than the 2nd turn-on time TonS (TonL > TonS).
Normal voltage is the voltage rating according to electrical equipment and sets.Normal voltage is, for example, 12V.In addition, overvoltage
It is set according to the structure of generator 3 and power conversion circuit 4.Sometimes it is opened in generator 3 and power conversion circuit 4
Road, ground fault etc. are abnormal, can cause high voltage.In addition, the revolving speed of internal combustion engine 2 the fast more is easy to happen high voltage.Overvoltage
For example, 16V or more.Certainly, normal voltage, overvoltage numerical value be not limited to the above numerical value.
By providing the switching signal of the 2nd turn-on time Tons, even if flowing through and turning in the very high situation of supply voltage VB
The electric current of converter circuit 14 and CDI circuit 15 can also be controlled very little.Thus, it is possible to prevent converter circuit 14 and
CDI circuit 15 is burnt.
Firing circuit 6 includes for providing the output terminal 19 of primary current to ignition coil 7.Output terminal 19 is connected
In ignition coil 7.Ignition coil 7 generates high voltage because of the voltage that output terminal provides.
In Fig. 2, the control processing 170 provided by control device 17 is shown.Control program 170 by control device 17 repeatedly
It executes.In step 171, control device 17 is from 13 input supply voltage VB of voltage detecting circuit.Also, it in this step, controls
Device 17 processed calculates supply voltage VB in the filtering processing value of predetermined amount of time.Control device 17, based on internal combustion engine 2 in rotation one
Multiple sample values of the supply voltage sampled during week execute filtering processing, calculate the filtering processing value in addition to exceptional value.
Filtering processing can use the methods of handling averagely, median extraction process, smoothing techniques.In present embodiment, calculate
Be supply voltage VB during internal combustion engine 2 rotates a circle average value VBave.
In step 172, control device 17 judges whether supply voltage VB is overvoltage.In this step, can also judge
Whether supply voltage VB is normal voltage.In step 172, by the average value VBave of supply voltage VB and predetermined threshold voltage
It is compared.If the average value VBave of supply voltage VB is lower than threshold voltage (VBave≤Vth), 173 are thened follow the steps；Such as
The average value VBave of fruit supply voltage VB is higher than threshold voltage, thens follow the steps 174.Threshold voltage vt h, for example, for corresponding to
The minimum 16V of overvoltage.
In step 173, control device 17 selects shewhart control chart MAP1 to characterize a series of charging timing.In the figure
In, the longitudinal axis indicates that duty ratio Dt, horizontal axis indicate a series of drive cycle number SQn in charging timing.Shewhart control chart MAP1,
Make it possible with normal duty cycle switching signal generation.Switching signal is presented normal duty cycle Dtn.Normally account for
The value of sky ratio Dtn is greater than aftermentioned protection duty ratio Dtp.
Fig. 3 shows shewhart control chart MAP1.A series of shewhart control chart MAP1, by pressing each drive in charging timing
Dynamic period SQ1, SQ2, SQ3 ... the turn-on time Ton and turn-off time Toff of SQn setting is characterized.Turn-on time Ton table
Show the time of switch element 32 in an ON state in a drive cycle.Turn-off time Toff indicates in a drive cycle
In the time that is in an off state of switch element 32, be set to gradually shorten with the progress of charging timing.
Three drive cycles are shown in figure.A series of drive cycle being comprised in charging timing, can for 4 or
More than 4.In shewhart control chart MAP1, the 1st turn-on time TonL is set to turn-on time Ton.1st turn-on time TonL
It is set in normal voltage region, such as comprising being greater than 8V less than in the range of 16V including voltage rating 12V, converts
Device circuit 14 can 3 charging of bio-occlusion capacitor.Turn-off time Toff correspond to each drive cycle SQ1, SQ2, SQ3 ... SQn
It is set off time Toff1, Toff2, Toff3 ... Toffn.A series of multiple turn-off times in charging timing,
At least at the initial stage of charging timing, it is set to Toff1 > Toff2 > Toff3.Time Ton+Toff with drive cycle number increasing
Add and gradually shortens.The time span of time Ton+Toff expression drive cycle.Time Ton+Toff charges according to capacitor 34
Charge constant set.
Fig. 2 is returned to, in step, the selection of control device 17 protects control figure MAP2 to characterize a series of charging timing.
The longitudinal axis indicates duty ratio in the figure, and horizontal axis indicates a series of drive cycle number SQn in charging timing.Control figure MAP2 is protected,
Make it possible with normal duty cycle switching signal generation.Switching signal is presented protection duty ratio Dtp.Protection accounts for
The value of sky ratio Dtp is less than normal duty cycle Dtn (Dtn > Dtp).
In addition, normal duty cycle Dtn and protection duty ratio Dtp are compared in n-th of identical drive cycle.Example
Such as, the normal duty cycle Dtn1 in the 1st drive cycle when supply voltage VB is in normal voltage range, is normal duty
Than the minimum value in Dtn.However, the value of normal duty cycle Dtn1 is greater than the 1st drive cycle when supply voltage VB is overvoltage
In protection duty ratio Dtp1.Normal duty cycle Dtn and protection duty ratio Dtp as a result, as charging timing is filled a series of
Progress in electric timing becomes larger.On the other hand, protection duty ratio Dtp is set to be less than normal duty cycle Dtn.Protection accounts for
Sky ratio Dtp is less than normal duty cycle Dtn within the scope of entirely charging timing.
Fig. 3 indicates protection control figure MAP2.In protection control figure MAP2, the 2nd turn-on time Tons is set to connect
Time Ton.To maintain ignition function, the 2nd turn-on time Tons is set to: in overvoltage range, being for example higher than 16V to big
In the range of about 20V, converter circuit 14 can charge to capacitor 34.2nd turn-on time Tons was shorter than for the 1st turn-on time
TonL.For example, the 2nd turn-on time Tons is about the 70% of the 1st turn-on time TonL.Protect a driving in control figure MAP2
The time Ton+Toff in period is shorter than its time in shewhart control chart MAP1.
Fig. 2 is returned to, in step 175, control device 17 is turned based on the control figure set in step 173 or 174, control
Converter circuit 14.Here, switch element 32 is by the switching signal based on shewhart control chart MAP1 or protection control figure MAP2 setting
To drive.Different switching control can provide according to supply voltage VB value as a result,.
According to a series of processing routines including step 171,172, provides and judge supply voltage VB lower than threshold value
Voltage is also above the determination unit of threshold voltage.Preferably, determination unit calculates at the filtering of specified time limit interior power voltage VB
Reason value.Preferably, determination unit is configured to be compared filtering processing value with threshold voltage vt h.
According to a series of processing routines including step 173,175, conventional control portion is provided, in supply voltage VB
When lower than predetermined threshold voltage Vth, pass through the switching signal driving switch element 32 with the 1st turn-on time.Conventional control portion
It works normally igniter 10 in normal voltage range, plays ignition function.Conventional control portion is that control device 17 provides
One control function block.According to a series of processing routines including step 174,175, protection control unit is provided, in electricity
When source voltage VB is higher than threshold voltage, pass through the switching signal driving switch element 32 with the 2nd turn-on time TonS.Wherein,
2nd turn-on time TonS is shorter than the 1st turn-on time TonL.Protection control unit makes igniter 10 work under overvoltage range,
Play ignition function.Protection control unit is the control function block that control device 17 provides.Control unit is protected, protection is contained in
The converter circuit 14 and CDI circuit 15 of igniter 10 are damaged from overvoltage and/or overcurrent.Moreover, protection control unit
Even if also can at least maintain partial firing function under overvoltage condition.
As shown in figure 3, control device 17, is configured in supply voltage VB lower than threshold voltage vt h or higher than threshold value electricity
There is common turn-off time Toff when though pressing Vth, passes through the different switching signal driving switch element 32 of turn-on time Ton.
Control device 17 provides conventional control portion and guarantor by the switching between the 1st turn-on time TonL and the 2nd turn-on time TonS
Protect control unit.
Control device 17, when being configured to a series of chargings by including multiple drive cycle SQ1, SQ2, SQ3 ...
Capacitor 34 is charged to predetermined voltage level by sequence, driving switch element 32.Control device 17, will be in multiple drive cycles
Time span Ton+Toff be set as with charging timing progress gradually shorten.
Due to setting the guarantor for charging normal timing and control figure MAP2 is protected to indicate indicated by shewhart control chart MAP1
Shield charging timing, so that even if being also able to maintain that ignition function in overvoltage range.To the change dramatically of 2 revolving speed of internal combustion engine
It is inhibited.In addition, two controls to realize defencive function with simple structure.
Fig. 4 is one embodiment of conventional control.In figure, since moment t11 a series of charging timing.At the moment
When t11, switch element 32 is switched on state by off-state.The electric current Itp for flowing through 31 primary coil of transformer gradually increases
Add.After 1st turn-on time TonL, switch element 32 switches to off-state.As a result, charging current, flows through comprising becoming
Closed circuit including depressor 31 and capacitor 34.Charging current gradually becomes smaller.Soon, after time T1, first driving
End cycle.Three drive cycles are shown in figure.
Fig. 5 is one embodiment of protection control.The 2nd turn-on time TonS in protection control is than the in conventional control
1 turn-on time TonL is short.Flow direction is inhibited comprising the electric current of such as circuit of the sensing element of transformer 31 etc as a result,.
It is damaged as a result, can inhibit overcurrent to element bring.On the other hand, since supply voltage VB is overvoltage, so, Fig. 5
Shown in primary current Itp gradient dItp be greater than conventional primary electric current Itp shown in Fig. 4 gradient dItp.Moreover, i.e.
Make also reach high level in the 2nd turn-on time TonS, primary current Itp.Therefore, even if in the second turn-on time TonS,
Circulate the secondary current Its that can be charged to capacitor 34.In this embodiment, the 2nd turn-on time TonS is arranged to:
When making typical abnormal occur it is possible that supply voltage VB in primary current Itp peak I tp* and voltage rating VB in
The peak I tp* of primary current Itp reach phase same level.
Secondary current Its shown in fig. 5 has the peak I ts* with conventional secondary electric current Its phase same level shown in Fig. 4
With gradient dIts.In other words, the 2nd turn-on time TonS is set to: make the peak I tp* of the primary current Itp in Fig. 5 with
The peak I tp* of conventional primary electric current Itp shown in Fig. 4 reaches phase same level.That is, in conventional control portion to capacitor
The program of 34 chargings is similar to the program to charge in protection control unit to capacitor 34.
As shown in Figure 4, Figure 5, the 1st turn-on time TonL and the 2nd turn-on time TonL and unequal, particularly TonL >
TonS.In conventional control and protection control, the turn-off time Toff in the respective drive period is equal.For example, the 1st driving week
Turn-off time Toff in phase SQ1 is equal in conventional control and protection control.In conventional control and protect control
Between, time span T1, T2, T3 ... of corresponding drive cycle are different.For example, being protected in the 1st drive cycle SQ1
Time span T1=TonS+Toff in shield control is shorter than the time span T1=TonL+Toff in conventional control.This knot
Structure can inhibit the time that secondary current Its is zero, help to improve charge efficiency.
In figure, the increase slope of the primary current Itp in turn-on time is indicated with dItp.Increase slope in protection control
DItp is greater than the increase slope dItp in conventional control.Because increasing slope dItp depends on supply voltage VB.In figure, primary electrical
The peak value of stream Itp is indicated with Itp*.The peak I tp* in peak I tp* and conventional control in protection control is same level.Electricity
Peak I tp* when peak I tp* when source voltage VB is voltage rating with supply voltage VB is Typical over-voltage is identical.To obtain
Such phenomenon sets turn-on time TonL and turn-on time TonS.
In figure, the peak value of secondary current Its is indicated with Its*.In peak I ts* and conventional control in protection control
Its* is equal.Peak I ts* when peak I ts* and supply voltage VB when supply voltage VB is voltage rating are Typical over-voltages
It is identical.To obtain this phenomenon, turn-on time TonL and turn-on time TonS are set.Secondary electrical in figure, in turn-off time
The reduction slope of stream Its is indicated with dIts.The reduction slope dIts reduced in slope dIts and conventional control in protection control
It is identical.
Fig. 4 or Fig. 5 shows a part of charging timing.A series of charging timing knots including at least one drive cycle
Shu Hou, thyristor 41 be triggered conducting, execute igniting.Later, a series of next charging timing are executed.
By embodiments described above, converter circuit 14 and CDI circuit 15 can be protected to cause from overvoltage
Damage.Also, disclosed internal combustion engine power supply device, even if can continue in overvoltage range through converter electricity
14 power conversion of road.Therefore, the ignition function that converter circuit 14, CDI circuit 15 and ignition coil 7 provide is continued.
As a result, the fluctuation of 2 revolving speed of internal combustion engine is inhibited.
Due to being only switched on time Ton, thus can be realized with better simply structure circuit protection and ignition function after
It is continuous.For example, can realize the continuation of circuit protection and ignition function using the small storage capacity in control device 17.
Other embodiments
Disclosure in this specification is not limited by example embodiment.The present invention include example embodiment and
The variant embodiment that those skilled in the art are carried out based on it.For example, the present invention is not only restricted to zero shown in embodiment
The combination of component and/or element can be practiced by a variety of different combinations.The present invention includes can be additional to embodiment
Additional part.The present invention includes the embodiment that the components and/or element in embodiment are omitted.The present invention also wraps
It includes, the displacement of the components carried out between embodiment and other embodiments and/or element or combines.Skill of the invention
Art range, the contents being not limited in embodiment.Several technical scopes disclosed in this invention, in addition to claims
Contents statement, it should also be appreciated that include being had altered in claims contents equivalence and range.
In the above-described embodiment, the capacitor 34 as the electric loading in load circuit is shown.Instead, it bears
Carrying circuit can have a variety of electric loadings.For example, may include the capacitor member of such as piezoelectric element etc instead of capacitor 34
Part.Piezoelectric element generates mechanical displacement according to the charge of storage.Piezoelectric element, for example, being used for the combustion of intermittent injection fuel
Expect injection valve.
In the above-described embodiment, converter circuit 14 is by including that the chopper circuit of transformer 31 provides.Instead
Various booster circuits can also be used.For example, the chopper circuit including reactance coil can be used in converter circuit 14.Such case
Under, the turn-on time of configuration switch signal is wanted, also to protect circuit when detecting overvoltage.
In the above-described embodiment, conventional control portion and protection control unit are provided.Also, stopping control can also being set
Portion.The stop control unit then stops output switching signal, makes converter circuit 14 when judging that vehicle completed to hide traveling
Stop electrical power conversion.
In the above-described embodiment, cutting between conventional control and protection control can only be realized by being switched on the time
It changes.As a result, the time span in respective drive period is different between conventional control and protection control.In contrast, can make often
The period for advising control is identical as the period of protection control.For example, can by the switching between turn-on time and turn-off time the two,
Conventional control and protection control are provided.In addition, the turn-off time in protection control can be set as than the disconnection in conventional control
Time is short.Longer turn-off time can extend the time of electric current not inflow transformer 31.As a result, this helps to inhibit conversion
The temperature of device circuit 14 and load circuit 15.Better defencive function is provided as a result,.
In the above-described embodiment, using threshold voltage vt h as boundary, conventional control and protection control are provided.It takes and generation
Ground, multiple threshold voltages can be set, for the multistage protection control unit of each threshold voltage setting.For example, can use
The protection control unit that threshold voltage is higher, turn-on time is shorter.It is set in addition it is also possible to will turn on the time: supply voltage VB
Higher, turn-on time is shorter.
In the above-described embodiment, by comparing supply voltage VB average value and threshold voltage, judge that supply voltage VB is low
In being also above predetermined threshold voltage Vth.Instead, power supply electricity can be judged by the time charged to capacitor 34
Pressure VB, which is lower than, is also above threshold voltage vt h.In this case, in addition to the structure of Fig. 1, will also using voltage detecting circuit and
Timer processing unit in control device 17.The charging voltage of voltage detecting circuit sensing capacitor 34, and input control device
17.Timer processing unit calculates the time charged to capacitor 34 according to the voltage of capacitor 34.When supply voltage VB is got higher,
Charging time shortens, so, the charging time can shorten turn-on time when being lower than predetermined threshold.In addition it is also possible to determination unit
Judgement carry out delay setting.
Claims (13)
1. a kind of internal combustion engine load drive device, characterized in that it comprises:
Converter circuit (14), with inductance element (31) and the switch element being discontinuously powered to the inductance element (31)
(32), it and to the supply voltage (VB) inputted by power supply terminal (11) converts；
Load circuit comprising capacitor (34), the capacitor are charged by the electric power that the converter circuit provides；
And
Control device (17) drives the switch element,
The control device is configured to: being driven by the inclusion of a series of charging timing of multiple drive cycles (SQ1, SQ2, SQ3)
The switch element is moved, the converter circuit is charged to predetermined voltage level, and by the week of the multiple drive cycle
Phase length (T1, T2, T3) is set as gradually shortening with the progress of the charging timing.
2. internal combustion engine load drive device according to claim 1, which is characterized in that
The inductance element (31) is transformer, has the primary coil powered by the power supply terminal and is connected to described negative
Carry the secondary coil of circuit；
The switch element is configured to discontinuously be powered to the primary coil.
3. internal combustion engine load drive device according to claim 1 or 2, it is characterised in that:
The turn-off time (Toff) of the switch element in the charging timing is set at least at the initial stage of charging timing
For the turn-off time in first drive cycle be greater than in second drive cycle turn-off time (Toff1 >
Toff2)。
4. internal combustion engine load drive device according to claim 1 or 2, it is characterised in that: the control device is micro-
Type computer.
5. a kind of internal combustion engine load drive device, characterized in that it comprises:
Converter circuit (14), with inductance element (31) and the switch element being discontinuously powered to the inductance element (31)
(32), it and to the supply voltage (VB) inputted by power supply terminal converts；And
Control device (17), drives the switch element, and the control device (17) includes
Determination unit (171,172) determines that the supply voltage (VB) is also above predetermined threshold lower than predetermined threshold voltage (Vth)
Threshold voltage (Vth)；
Conventional control portion (173,175), when the supply voltage (VB) is lower than predetermined threshold voltage (Vth), by having
The switching signal of 1st turn-on time (TonL) drives the switch element；And
It protects control unit (174,175), when the supply voltage (VB) is higher than the threshold voltage, is connect by having the 2nd
The switching signal of logical time (TonS) drives the switch element, wherein the 2nd turn-on time (TonS) is shorter than the described 1st
Turn-on time,
The inductance element (31) is transformer, has the primary coil powered by the power supply terminal and is connected to load electricity
The secondary coil on road,
The switch element is configured to discontinuously be powered to the primary coil,
The load circuit includes capacitor (34), and the capacitor is filled by the electric power that the converter circuit provides
Electricity,
The control device is configured to: being driven by the inclusion of a series of charging timing of multiple drive cycles (SQ1, SQ2, SQ3)
The switch element is moved, the converter circuit is charged to predetermined voltage level, and by the week of the multiple drive cycle
Phase length (T1, T2, T3) is set as gradually shortening with the progress of the charging timing.
6. internal combustion engine load drive device according to claim 5, it is characterised in that:
The control device is configured to: the supply voltage (VB) be lower than predetermined threshold voltage (Vth) when and institute
When stating supply voltage (VB) higher than the predetermined threshold voltage, driven by the switching signal with common turn-off time (Toff)
Move the switch element.
7. internal combustion engine load drive device according to claim 6, it is characterised in that:
The control device is provided described normal by the switching between the 1st turn-on time and the 2nd turn-on time
Advise control unit and the protection control unit.
8. internal combustion engine load drive device according to claim 7, it is characterised in that:
The determination unit calculates the filtering processing value of the supply voltage in the scheduled period, and by the filtering processing value with it is described
Threshold voltage is compared.
9. internal combustion engine load drive device according to claim 8, it is characterised in that:
The load circuit includes the element (41) for being opened and closed discharge circuit, and the discharge circuit is from the capacitor to output end
The discharge circuit of sub (19).
10. internal combustion engine load drive device according to claim 9, it is characterised in that:
The turn-off time (Toff) of the switch element gradually shortens with the progress of the charging timing.
11. according to the described in any item internal combustion engine load drive devices of claim 5~10, it is characterised in that:
The turn-off time (Toff) of the switch element in the charging timing is set at least at the initial stage of charging timing
For the turn-off time in first drive cycle be greater than in second drive cycle turn-off time (Toff1 >
Toff2)。
12. according to the described in any item internal combustion engine load drive devices of claim 5~10, it is characterised in that: the control
Device is microcomputer.
13. a kind of internal combustion engine ignition device, characterized in that it comprises:
The load drive device of internal combustion engine described in claim 12 and
Ignition coil (7), the ignition coil (7) generate high voltage by the electric current provided by capacitor,
The load circuit is CDI circuit (15).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-065773 | 2016-03-29 | ||
| JP2016065773A JP6128249B1 (en) | 2016-03-29 | 2016-03-29 | LOAD DRIVE DEVICE FOR INTERNAL COMBUSTION ENGINE AND IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE |
| PCT/JP2016/074306 WO2017168776A1 (en) | 2016-03-29 | 2016-08-22 | Load-driving device for internal combustion engine, and ignition device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107532560A CN107532560A (en) | 2018-01-02 |
| CN107532560B true CN107532560B (en) | 2018-12-07 |
Family
ID=58714685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680004439.9A Active CN107532560B (en) | 2016-03-29 | 2016-08-22 | Internal combustion engine load drive device and internal combustion engine ignition device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6128249B1 (en) |
| CN (1) | CN107532560B (en) |
| WO (1) | WO2017168776A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI688197B (en) * | 2019-04-30 | 2020-03-11 | 宏碁股份有限公司 | Power conversion apparatus |
| JP7456353B2 (en) | 2020-10-27 | 2024-03-27 | 株式会社デンソー | Internal combustion engine ignition system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330379A (en) * | 1991-04-30 | 1992-11-18 | Mitsubishi Electric Corp | Ignition device for internal combustion engine |
| JP2011208522A (en) * | 2010-03-29 | 2011-10-20 | Shindengen Electric Mfg Co Ltd | Ignition device of internal combustion engine |
| CN102741544A (en) * | 2009-12-11 | 2012-10-17 | 欧陆汽车有限责任公司 | Method for operating an ignition device for an internal combustion engine, and ignition device for an internal combustion engine for carrying out the method |
| CN104603449A (en) * | 2012-09-12 | 2015-05-06 | 罗伯特·博世有限公司 | Ignition system for an internal combustion engine |
-
2016
- 2016-03-29 JP JP2016065773A patent/JP6128249B1/en not_active Expired - Fee Related
- 2016-08-22 WO PCT/JP2016/074306 patent/WO2017168776A1/en active Application Filing
- 2016-08-22 CN CN201680004439.9A patent/CN107532560B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330379A (en) * | 1991-04-30 | 1992-11-18 | Mitsubishi Electric Corp | Ignition device for internal combustion engine |
| CN102741544A (en) * | 2009-12-11 | 2012-10-17 | 欧陆汽车有限责任公司 | Method for operating an ignition device for an internal combustion engine, and ignition device for an internal combustion engine for carrying out the method |
| JP2011208522A (en) * | 2010-03-29 | 2011-10-20 | Shindengen Electric Mfg Co Ltd | Ignition device of internal combustion engine |
| CN104603449A (en) * | 2012-09-12 | 2015-05-06 | 罗伯特·博世有限公司 | Ignition system for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017180184A (en) | 2017-10-05 |
| JP6128249B1 (en) | 2017-05-17 |
| CN107532560A (en) | 2018-01-02 |
| WO2017168776A1 (en) | 2017-10-05 |
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