CN106536909A - Starting control device for engine - Google Patents
Starting control device for engine Download PDFInfo
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- CN106536909A CN106536909A CN201580040311.3A CN201580040311A CN106536909A CN 106536909 A CN106536909 A CN 106536909A CN 201580040311 A CN201580040311 A CN 201580040311A CN 106536909 A CN106536909 A CN 106536909A
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- engine
- target
- crank angle
- object time
- during
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- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 15
- 238000001514 detection method Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000001149 cognitive effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
-
- 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
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
A reluctor projection (7a) on a flywheel (7) is set to an advanced side so that a target ignition timing can be specified after an ON period of a crank angle signal is measured. Then, for the first ignition at the beginning of the start of cranking, the target ignition timing (= ignition target time Ttgt) is specified on the basis of a measurement value of an ON period Ton(n-2) of the crank angle signal (first starting mode). For the second and subsequent ignitions, an ON period Ton(n) in a current rotation cycle is estimated on the basis of measurement values of an OFF period Toff(n-2) and the ON period Ton(n-2) in a rotation cycle two rotations before and an OFF period Toff(n) in the current rotation cycle, and the target ignition period is specified on the basis of the ON period Ton(n) (second starting mode).
Description
Technical field
The present invention relates to a kind of startup control device of engine, more particularly, to a kind of opening for engine as described below
Dynamic control device, which determines target when engine is started based on the crank angle signal that the rotation with engine is synchronously outputted
Crankangle, and the target crank angle based on determined by, make the control devices such as spark plug and injector work.
Background technology
In order to improve fuel consumption efficiency and exhaust gas properties of engine etc., it is desirable to for the various control realizations of engine
Optimization, for example, it is desired to perform that in the best opportunity plug ignition is made according to ignition timing control, or according to fuel injection control
Make injector spray fuel.Thus, for example according to the technology of patent document 1, generating synchronous with the rotation of the crank axle of engine
The crank angle signal that ground changes, based on the crank angle signal, determines that target ignition period, as the target crank angle of engine, enters
Row ignition timing is controlled.
It is explained in more detail, according to the technology of patent document 1, on the periphery of engine flywheel, across special angle region shape
Into magnetic resistance dispensing head (reluctor) projection, and the flywheel configures crank angle sensor opposite to each other.Export from crank angle sensor
Crank angle signal it is rectangular wavy, with engine rotation 1 enclose as 1 cycle, it is right that the advance side of compression top center is set to
During answering the connection in special angle region, during other angular regions are set to shut-off, both alternately switch.On the other hand,
Target ignition period is calculated based on engine rotary speed and throttle opening etc. for example, specifically, calculating from crank angle signal
Crankangle of the start time (reference position) during connection to target ignition period.
It is during engine rotation, during the shut-off in swing circle before being enclosed according to engine rotation 2 and subsequent
During connection, and this swing circle in shut-off during, during calculating the connection in this swing circle.Then, it is based on
During the connection of reckoning, to target ignition period till crankangle carry out time conversion, by the target in this swing circle
Ignition timing is defined as the time (time from needed for reference position to target ignition period), and based on the target ignition for being obtained
In period, spark plug is made to work.
The reason for during calculating the connection of this swing circle is that intrinsic motivation can reach target ignition during connecting
Period, therefore, if according to the order in target ignition period is determined again after during measurement is connected, spark plug can have little time work
Make.Additionally, with reference to rotation 2 circle before connection during and shut-off during the reason for be, four-stroke engine with 720 DEG C of A repeatedly
Carry out burn cycle, rotation 2 is enclosed the rotation of front engines and changes and can reproduce in this swing circle, therefore, it can root
During ratio and this shut-off according to these during connection and during shut-off, during calculating this connection.
Prior art literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2002-317741 publication
The content of the invention
Invent technical problem to be solved
According to the technology of above-mentioned patent document 1, in order to determine target ignition period, it is desirable to have the connection phase before 2 circle of rotation
Between and shut-off during information.This has no problem in conventional engine operation process, but when engine is started, if not
It is, after starting crank and having rotated 2 circles, just cannot to obtain the information during connecting and during shut-off, naturally also cannot just start
Ignition timing is controlled.The delay of beginning ignition timing control can cause the delay that the delay of engine start or even vehicle set out,
Therefore, a kind of essence countermeasure that can quickly start engine is intended to all the time.
The present invention is completed for solving the above problems, and its object is to provide a kind of startup control device of engine,
When starting engine, the rotation that just can be synchronized with engine at the beginning of starting is rotated from crank, control spark plug and injector etc.
Equipment works such that it is able to realize the quick startup of engine.
Solve the technical scheme adopted by technical problem
To achieve these goals, the startup control device of engine of the invention is characterised by possessing：Signal output list
Unit, its output crank angle signal, the crank angle signal are enclosed as 1 cycle with engine rotation 1 so that be set in advance in compression
During the 1st output level corresponding to the special angle region of the advance side of stop and correspondence other angular regions the 2nd
Alternately switch during output level；Rising during target crank angle setup unit, its 1st output level with crank angle signal
Position on the basis of edge corresponding to point or terminal, will for the control device that makes engine be synchronized with engine rotation and work
The target crank angle of work is set as the angle between reference position；1st object time determining unit, its measurement engine
During the 1st output level in this swing circle, based on the measured value during the 1st output level, target crank angle is set
Target crank angle set by unit carries out time conversion, determines the object time in this swing circle, used as from benchmark position
Put the time of beginning；2nd object time determining unit, the 2nd output electricity in swing circle before its measurement circle of engine rotation 2
During the 2nd output level during flat and during the 1st subsequent output level and in this swing circle, based on these outputs
Measured value during level, during calculating the 1st output level in this swing circle, and based on the 1st output level for calculating
Period, time conversion is carried out to the target crank angle set by the setup unit of target crank angle, in determining this swing circle
Object time, used as the time started from reference position；And control unit of engine, its when engine is started, from opening
In a period of beginning crank is turned to till engine rotation 2 is enclosed, based on determined by the 1st object time determining unit during target
Between, make the control device of engine work, in a period of rotating after 2 circles, based on determined by the 2nd object time determining unit
Object time, the control device of engine is made to work.
According to the control device of engine as constructed as above, till the circle of engine rotation 2 is turned to from beginning crank
In period, the object time based on determined by the 1st object time determining unit, the control device of engine is made to work, in rotation 2
In a period of after circle, the object time based on determined by the 2nd object time determining unit, the control device of engine is made to work.
Therefore, when engine is started, rotate from crank at the beginning of starting, just can be made with being synchronized with the suitable opportunity of engine rotation
Control device works.
With regard to other forms, the target ignition period of the spark plug of selected objective target crankangle setup unit setting engine is made
For target crank angle, the 1st and the 2nd object time determining unit carries out time conversion respectively, determines this to target ignition period
The object time of swing circle, control unit of engine are true based on the 1st and the 2nd object time determining unit institute when starting engine
The fixed object time, spark plug is made to work.
According to being constructed as described above, rotate from crank at the beginning of starting, just can start the ignition timing control of spark plug.
With regard to other forms, the target injection timing of the injector of selected objective target crankangle setup unit setting engine is made
For target crank angle, the 1st and the 2nd object time determining unit carries out time conversion respectively, determines this to target injection timing
The object time of swing circle, control unit of engine are true based on the 1st and the 2nd object time determining unit institute when starting engine
The fixed object time, injector is made to work.
According to being constructed as described above, rotate from crank at the beginning of starting, just can start the fuel injection control of injector.
Invention effect
According to the present invention, when engine is started, the rotation that just can be synchronized with engine at the beginning of starting is rotated from crank, is made
The control device such as spark plug and injector works such that it is able to realize the quick startup of engine.
Description of the drawings
Fig. 1 is the system construction drawing of the startup control device of the engine for representing embodiment.
Fig. 2 is to represent that the crank angle signal of correspondence magnetic resistance distribution head protrusion is generated to process and determine target based on crank angle signal
The sequential chart of the process of ignition timing.
Fig. 3 is the flow chart of the start-up mode option program for representing that ECU is performed.
Specific embodiment
Hereinafter, an embodiment party of the startup control device of the engine being equipped on cart is embodied as to the present invention
Formula is illustrated.
Fig. 1 is the system construction drawing of the startup control device of the engine for representing present embodiment.
The engine 1 of present embodiment is configured to the four-cycle, single-cylinder petrol engine of capacity 50cc, is equipped on cart
As traveling power source.But, the specification of engine 1 is not limited to this, arbitrarily can change.
In the cylinder 3 being formed in the cylinder block 2 of engine 1, piston 4 is slidably equipped with, piston 4 is via connecting rod
5 are connected to crank 6, and the reciprocating motion with piston 4 links, and crank 6 is rotated with.In the rear end (speed changer (not shown) of crank 6
Side) flywheel 7 is installed, magnetic resistance distribution head protrusion 7a, the magnetic resistance point is formed with the predetermined angular region on the periphery of flywheel 7
It is made up of magnet with head protrusion 7a, for detecting crankangle.
Air inlet 9a and exhaust outlet 9b is formed with the cylinder head 9 being fixed in cylinder block 2, and with front end towards gas
Attitude in cylinder is equipped with spark plug 10.It is being connected on the inlet channel 11 of air inlet 9a, is starting to set gradually from upstream side
The choke valve 13 that have air filter 12, is opened and closed according to the throttle operation of driver, possess ISCV's (IAC) 14
Bypass channel 15, and towards the injector 16 of air inlet 9a spray fuels.Additionally, in the exhaust passage for being connected to exhaust outlet 9b
On 17, the three-way catalyst 18 and muffler (not shown) for purifying waste gas is provided with.
Intake valve 20 is equipped on air inlet 9a, is equipped with air bleeding valve 21 on exhaust outlet 9b.It is by valve spring 22, right
These air-intaking exhaust valves 20,21 exert a force to closed side, and utilization is synchronized with crank axle 6 in cylinder head 9 and is driven in rotation
Admission cam shaft 23 and exhaust cam shaft 24, open these air-intaking exhaust valves 20,21.Thus, it is being synchronized with the past of piston 4
The regulation moment of multiple motion, intake valve 20 and air bleeding valve 21 are opened and closed, and by air inlet, compress, expand, being vented what this 4 strokes were constituted
The burn cycle of engine 1 is worked repeatedly with the crankangle of 720 DEG C of A.
Using petrolift 26, the fuel (gasoline) in fuel tank 25 is stored in the supply of above-mentioned injector 16.Petrolift 26
Form as one with injector 16, via supply hose 27 and return hose 28, be connected respectively to fuel tank 25.
If petrolift 26 works, the fuel in fuel tank 25 can be guided to petrolift 26 via supply hose 27, and
Authorized pressure is forced into, the fuel after pressurization is supplied to into injector 16, and residual fuel is recovered to via return hose 28
In fuel tank 25.Thereby, it is possible to all the time to injector 16 supply authorized pressure fuel, can according to the unlatching of injector 16,
With the injection timing of regulation and emitted dose to air inlet 9a spray fuels.
In 1 running of engine, using the negative pressure produced with the decline of piston 4 in suction stroke, via sky
Air cleaner 12 is drawn into extraneous gas in inlet channel 11, and according to the aperture of choke valve 13, adjustment sucks the flow of air,
Then mix with the fuel sprayed from injector 16, while flowing into during intake valve 20 is opened in the cylinder of engine 1.Connecing
It is compressed in the compression travel got off, then mixed gas is lighted a fire using spark plug 10 near, swollen
Burnt in swollen stroke, and via piston 4, revolving force is applied to crank axle 6.In ensuing instroke, in exhaust
During valve 21 is opened, the waste gas after burning is discharged from cylinder, flow through exhaust passage 17 and through three-way catalyst 18 and disappear
Sound device, is discharged to the outside.
Based on the control of ECU31 (control unit of engine), the burn cycle of above engine 1 is performed.Therefore, exist
The input side of ECU31 is connected with electromagnetic pick-up (pick-up) 32 (signal output unit), throttle opening sensor 33, O2Pass
The various sensor classes such as sensor 34 and cooling-water temperature sensor 35, electromagnetic pick-up 32 and above-mentioned flywheel 7 are configured opposite to each other, and output is same
The detection signal for distributing head protrusion 7a in magnetic resistance is walked, throttle opening sensor 33 is used for detecting the aperture of choke valve 13, O2Sensing
Device 34 is disposed in exhaust passage 17, according to the exhaust centered on stoichiometry (stoichiometry) (chemically correct fuel)
The variation of air-fuel ratio, makes output change steppedly, and cooling-water temperature sensor 35 is used for detecting the coolant water temperature Tw of engine 1.This
Outward, the outlet side in ECU31 is connected with above-mentioned ISCV14, injector 16 (control device), petrolift 26 and is used for driving fire
The various equipment classes such as the igniter 36 of flower 10 (control devices) of plug.
ECU31 is based on these sensor informations, performs for driving the fuel injection control of injector 16, for driving fire
The various controls such as the ignition timing control of flower plug 10, run engine 1.
For example, as fuel injection control, ECU31 is based on the engine rotation calculated according to the detection signal of electromagnetic pick-up 32
Rotary speed Ne and by throttling throttle opening θ th for detecting of sensor 33 etc., determines target fuel injection amount, and in air inlet row
The regulation moment of journey drives injector 16, performs fuel injection.
Additionally, used as ignition timing control, ECU31 is based on engine rotary speed Ne and throttle opening θ th etc., determines mesh
Mark ignition timing, while based on the wavy crank angle signal of rectangle generated according to the detection signal of electromagnetic pick-up 32, it is right to determine
Spark plug 10 should be made to light a fire (control unit of engine) in the moment in target ignition period, drive ignition device 36.
Hereinafter, describe in detail it is this by ECU31 perform, from generate crank angle signal be controlled to the ignition timing of spark plug 10
Process only.
Fig. 2 is that the generation of the crank angle signal for representing correspondence magnetic resistance distribution head protrusion 7a is processed and based on crank angle signal
Determine the sequential chart of the process in target ignition period.
On flywheel 7, the special angle region across 60 DEG C of A is formed with magnetic resistance distribution head protrusion 7a of present embodiment.If
The end of magnetic resistance distribution head protrusion 7a on the direction of rotation of flywheel 7 is set to into starting point, the magnetic resistance point on direction will be reversely rotated
End with head protrusion 7a is set to terminal, then the starting point is at the top dead centre than the engine 1 in advance crankangle of 80 DEG C of A sides pair
Electromagnetic pick-up 32 should be corresponded in electromagnetic pick-up 32, terminal at than the top dead centre in advance crankangle of 20 DEG C of A sides.
Electromagnetic pick-up 32 has the property that, i.e., by the contact between magnet, separate and cause flux change, from
And make output change.Therefore, from electromagnetic pick-up 32 when the starting point and terminal for distributing head protrusion 7a with magnetic resistance is to correspondence
The detection signal of output will be changed in needle pattern.More specifically it is illustrated as, in the starting point for distributing head protrusion 7a corresponding to magnetic resistance
BTDC20 DEG C of A of the subsequent terminal of 80 DEG C of A of BTDC (Before Top Dead Center, before upper dead canter) and correspondence, detection
Signal is changed respectively, and the variation of these detection signals is repeated every 360 DEG C of A.
As described above, the detection signal that electromagnetic pick-up 32 is exported is input in ECU31, ECU31 uses built-in lock
Circuit 31a (signal output unit) is deposited, crank angle signal is generated.That is, latch cicuit 31a is corresponding to magnetic resistance dispensing head
At the variation moment of the detection signal of the starting point of projection 7a, crank angle signal is made to rise and remain on-state (the 1st of the present invention
During output level, during hereinafter referred to as connecting), in the variation of the terminal corresponding to subsequent magnetic resistance distribution head protrusion 7a
Carve, crank angle signal is declined and is remained off state and (during the 2nd output level of the present invention, hereinafter referred to as turn off the phase
Between).The process is performed repeatedly by latch cicuit 31a, with 360 DEG C of A as 1 cycle (during shut-off+connect during), is generated and is sent out
The wavy crank angle signal of rectangle that the crankangle of motivation 1 synchronously changes.
Then, ignition timing control is performed based on crank angle signal, as the technology of patent document 1, if in order to push away
During calculating the connection of this swing circle with reference to rotation 2 circle before connection during and shut-off during, it may appear that engine start
The problem of delay.
In view of this problem, present inventor's research finds, if compared to regular situation (such as patent document 1), will fly
Magnetic resistance distribution head protrusion 7a on wheel 7 is arranged at more by advance side, to advance angle lateral deviation during making the connection of crank angle signal
Move, then have ample time for determining target ignition period after may insure during measurement is connected.The magnetic resistance of above-mentioned formation
The special angle region of distribution head protrusion 7a is namely based on the cognition and draws.But, during the method is according only to connection
Measurement result carries out time conversion to target ignition period, therefore, when delay angle is lighted a fire, (measurement closing position and igniting are powered and close
It is disconnected to be separated), compare with the method during connection and during shut-off before existing 2 circle of reflection rotation, it is difficult to carry out accurately
Ignition timing is controlled.
Therefore, in a period of only at the beginning of starting from crank rotation to 2 circle of the rotation of engine 1 (correspondence is lighted a fire first)
Perform the ignition timing control (the 1st object time determining unit of the present invention, hereinafter referred to as the 1st start-up mode), Zhi Houzhuan
It is that ignition timing control (the 2nd object time determining unit of the present invention, the hereinafter referred to as the 2nd startup are performed based on existing method
Pattern).
In addition, the optimal special angle region of magnetic resistance distribution head protrusion 7a is from 80 DEG C of above-mentioned BTDC, 20 DEG C of A to BTDC A, but
This is not limited to, as long as the starting point that magnetic resistance distributes head protrusion 7a is set in the range of 90～60 DEG C of A of BTDC, by magnetic resistance
The terminal of distribution head protrusion 7a is set in the range of 20～15 DEG C of A of BTDC.
Hereinafter, it is cognitive based on more than, for performed by ECU31 engine start when control illustrate.
Fig. 3 is the flow chart of the start-up mode option program for representing that ECU31 is performed, and ECU31 carried out in the ignition switch of vehicle
During making operation, the program is started with the control interval for specifying.
First, in the crank rotation whether that step S2 judges engine 1, if No (no), then temporarily terminate program.Such as
Fruit crank is rotated and is started so that is judged as Yes (YES) in step s 2, then into step S4, is judged whether engine 1 has revolved
Turn 2 circles.If also not rotating 2 circles, it is judged as No, and selects the 1st start-up mode in step s 6, then terminate program；Such as
Fruit engine 1 rotated 2 is enclosed, and the judgement of step S4 is Yes, then into step S8, select the 2nd start-up mode, then terminate
Program.
Start-up mode is selected by ECU31 with regard to more than, and holding for ignition timing control is performed in startup engine accordingly
Row situation, based on the sequential chart of Fig. 2, is further illustrated.
Shown in Fig. 2 is the situation of the crank rotation beginning of the engine 1 between expansion stroke and instroke, is turned in the crank
At the beginning of dynamic beginning, according to the program of Fig. 3, the 1st start-up mode is selected.
As described above, crank angle signal changes by 1 cycle of 360 DEG C of A, first, measure from being vented and stop
Terminate during starting during shut-off before point to the shut-off in compression travel (start during=connection), as the rotation
Swing circle in shut-off during Toff(n-2).Then, connecing before measurement is from starting during connection to being located at compression top center
Logical period terminates, as the connection in the swing circle of the rotation during Ton(n-2).In addition, during these measured values represent shut-off
Toff(n-2)And Ton during connecting(n-2)Duration (Ton during aftermentioned shut-off during this(n)And Ton during connecting(n)
It is identical).
At the same time, the Ton during connecting(n-2)While beginning, start to be powered ignition coil using igniter 36, base
The Ton during startup set in advance is with target ignition period and connection(n-2), determine target ignition period, based on the target
Ignition timing, ignition coil are powered and terminate, and spark plug 10 is ignited.At the regulation moment of the suction stroke prior to the igniting, from
16 spray fuel of injector, the air of fuel and suction in subsequent compression travel to injection are together pressed in cylinder
Contracting, therefore, there is burning during expansion stroke can be made in igniting.
Now, the process for determining target ignition period using the 1st start-up mode is performed according to following steps.Firstly, for
Target ignition period, with connection during Ton(n-2)Start time (rising edge) on the basis of, calculate from the reference position to target
(target crank angle sets the crankangle (the target crank angle of the present invention, hereinafter referred to as light a fire target crank angle Dtgt) of ignition timing
Order unit).In addition, in the present embodiment, igniting target crank angle Dtgt during engine start is deposited in ECU31 in advance
Store up as fixed value, it is not limited to this, for example can also be variable based on the coolant water temperature Tw of engine 1 or cell voltage
Ground setting igniting target crank angle Dtgt (target crank angle setup unit).
Ton during the connection for measuring in the manner described above(n-2)Distribute (60 DEG C of the angular regions of head protrusion 7a equivalent to magnetic resistance
A crankangle), makes crank 6 rotate Ton during the crankangle needs to connect(n-2).Therefore, distribute head protrusion 7a with these magnetic resistance
Special angle region and connect during Ton(n-2)Relation be index, to light a fire the target crank angle Dtgt times of carrying out change
Calculate, can calculate from time (object time of the present invention, hereinafter referred to as point needed for reference position to target ignition period
Fiery object time Ttgt).Then, at target ignition period after the object time Ttgt that lights a fire from reference position,
Terminate the energization of ignition coil, so as to be lighted a fire.
In addition, reference position be not necessarily to as connection during start time, it is also possible to finish time during with connection (under
Drop edge) on the basis of position.
As described above, performing the igniting first at the beginning of crank rotation starts, the 2nd igniting is after 2 circle of the rotation of engine 1
Perform before compression top center in the swing circle of (after 720 DEG C of A).
Now, the 2nd start-up mode of procedure Selection according to Fig. 3, and perform using the 2nd start-up mode according to following steps
Determine the process in target ignition period.
First, except the Toff during the shut-off that measured in the swing circle before 2 circle of rotation(n-2)And Ton during connecting(n-2),
Toff during the shut-off in this swing circle will also be measured(n).Based on these measured values (Toff(n-2)、Ton(n-2)、
Toff(n)), and Ton during calculating the connection in this swing circle according to below equation (1)(n)。
Ton(n)=Toff(n)·Ton(n-2)/Toff(n-2)……(1)
Then, as above-mentioned 1st start-up mode, distribute the special angle region of head protrusion 7a with magnetic resistance and connect the phase
Between Ton(n)Relation be index, to light a fire target crank angle Dtgt carry out time conversion, can calculate from reference position to mesh
Time (igniting object time Ttgt) needed for mark ignition timing.Igniting target crank angle Dtgt now it is not absolutely required to adopt
With with the 1st start-up mode identical value, it would however also be possible to employ other fixed values set in advance or the cooling water based on engine 1
The value that warm Tw or cell voltage are calculated is used as igniting target crank angle Dtgt (target crank angle setup unit).In addition, with regard to
The detailed process of igniting object time Ttgt is calculated above according to the 2nd start-up mode, patent document 1 is refer to.
Afterwards, continue as the crank of engine 1 is rotated, being performed with the interval of 720 DEG C of A repeatedly makes injector 16 spray combustion
The material and spark plug 10 target ignition period (=igniting object time Ttgt) based on determined by the 2nd start-up mode is carried out a little
Fire.
Then, if engine rotary speed Ne exceedes judgment value of exploding completely set in advance, it is regarded as engine 1 and starts
Complete, in order to continue to run with, ECU31 proceeds to operational mode.In this operating mode, different from starting situation during engine,
It is running status (for example, engine rotary speed Ne, throttle opening θ th) the calculating igniting target crank angle based on engine 1
Dtgt as target ignition period, but, with regard to will igniting target crank angle Dtgt carry out time conversion for igniting the object time
The process of Ttgt, performs according to the step identical with above-mentioned 2nd start-up mode.
As described above, the startup control device of the engine 1 according to present embodiment, in order in measurement crankangle letter
Number connection during after determine target ignition period, by flywheel 7 magnetic resistance distribution head protrusion 7a be set in advance side, here
On the basis of, crank rotates the Ton during igniting is connection based on crank angle signal first at the beginning of starting(n-2)Measured value determine
Target ignition period (the 1st start-up mode), the 2nd later igniting are based on the shut-off phase in the swing circle before 2 circle of rotation
Between Toff(n-2)And Ton during connecting(n-2)And Toff during the shut-off in this swing circle(n)Each measured value, calculate this
Ton during connection in secondary swing circle(n), and Ton during the connection based on reckoning(n), determine that target ignition period, (the 2nd opened
Dynamic model formula).
Therefore, when engine 1 is started, rotate from crank at the beginning of starting, just can be in the suitable of the rotation for being synchronized with engine 1
On opportunity, start the ignition timing control of spark plug 10, and then the quick startup of engine can be realized.
Additionally, in present embodiment, be embodied as when engine is started for determining the process in target ignition period, but
It is that application is not limited in ignition timing control, for example, can also be applied to fuel injection control.And, rotate in crank
In fuel injection first (suction stroke) at the beginning of beginning, it is also possible to Ton during the connection based on crank angle signal(n-2)Measurement
Value determines target injection timing (=injection target time Ttgt) (the 1st object time determining unit), may then based on the mesh
Mark injection timing, first using 16 spray fuel of injector (control unit of engine), here is not repeat specification, and embodiment party
Formula is the same, can rapidly start fuel injection control, starts engine 1 as early as possible.
The explanation of embodiment so far terminates, but the form of the present invention is not limited in the embodiment.For example, above-mentioned reality
The mode of applying is embodied as the startup control device of the engine 1 being equipped on cart, but the carrying object of engine 1 not only
It is limited to this.The startup control device of engine 1 being equipped on tricycle, generator can also be for example embodied as.Additionally, on
It is the situation for being applied to singlecylinderengine 1 to state embodiment, it is also possible to be applied to multiple cylinder engine.
In addition, above-mentioned embodiment uses the latch cicuit 31a and electromagnetic pick-up 32 of ECU31 as signal output unit, but
It is not limited to that, arbitrarily can changes, for example, can also uses well-known Photo Interrupter (photo interrupter).
Label declaration
1 engine
10 spark plugs (control device)
16 injectors 16 (control device)
31 ECU (target crank angle setup unit, the 1st object time determining unit, the 2nd object time determining unit, engine
Control unit)
31a latch cicuits (signal output unit)
32 electromagnetic pick-ups (signal output unit)
Claims (3)
1. the startup control device of a kind of engine, it is characterised in that possess：
Signal output unit, its output crank angle signal, the crank angle signal are enclosed as 1 cycle with engine rotation 1 so that pre-
During the 1st output level corresponding to the special angle region of the advance side for being first set in compression top center and correspondence other
Alternately switch during 2nd output level of angular regions；
Beginning or end institute during target crank angle setup unit, its described 1st output level with the crank angle signal
Position on the basis of corresponding edge, will work for making the control device of the engine be synchronized with the rotation of the engine
Target crank angle is set as the angle between the reference position；
1st object time determining unit, the 1st output level phase in this swing circle of its measurement engine
Between, based on the measured value during the 1st output level, the target crank angle set by the setup unit of the target crank angle is entered
Row time conversion, determines the object time in this swing circle, used as the time started from the reference position；
2nd object time determining unit, the 2nd output electricity in swing circle before its measurement circle of engine rotation 2
During the 2nd output level during flat and during the 1st subsequent output level and in this swing circle, based on these outputs
Measured value during level, during calculating the 1st output level in this swing circle, and based on the 1st output electricity for calculating
During flat, time conversion is carried out to the target crank angle set by the setup unit of the target crank angle, this revolution is determined
The interim object time, used as the time started from the reference position；And
Control unit of engine, which is being turned to till the engine rotation 2 encloses from starting crank when the engine is started
In a period of, the object time based on determined by the 1st object time determining unit, make the control device work of the engine
Make, in a period of rotating after 2 circles, the object time based on determined by the 2nd object time determining unit, make described starting
The control device work of machine.
2. the startup control device of engine as claimed in claim 1, it is characterised in that target crank angle setup unit
The target ignition period of spark plug of the engine is set as the target crank angle,
When the 1st object time determining unit and the 2nd object time determining unit are carried out to the target ignition period respectively
Between convert, determine the object time of this swing circle,
When the control unit of engine is based on the 1st object time determining unit described in when starting the engine and 2 target
Between the object time determined by determining unit, make spark plug work.
3. the startup control device of engine as claimed in claim 1 or 2, it is characterised in that the target crank angle setting
Unit sets the target injection timing of the injector of the engine as the target crank angle,
When the 1st object time determining unit and the 2nd object time determining unit are carried out to the target injection timing respectively
Between convert, determine the object time of this swing circle,
When the control unit of engine is based on the 1st object time determining unit described in when starting the engine and 2 target
Between the object time determined by determining unit, make injector work.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014114903A JP6301204B2 (en) | 2014-06-03 | 2014-06-03 | Engine start control device |
| JP2014-114903 | 2014-06-03 | ||
| PCT/JP2015/066104 WO2015186761A1 (en) | 2014-06-03 | 2015-06-03 | Starting control device for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106536909A true CN106536909A (en) | 2017-03-22 |
| CN106536909B CN106536909B (en) | 2019-09-20 |
Family
ID=54766829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580040311.3A Expired - Fee Related CN106536909B (en) | 2014-06-03 | 2015-06-03 | The starting control device of engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6301204B2 (en) |
| CN (1) | CN106536909B (en) |
| WO (1) | WO2015186761A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6200481B2 (en) | 2015-11-25 | 2017-09-20 | 株式会社Ｓｕｂａｒｕ | Outside environment recognition device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288137A (en) * | 1992-04-03 | 1993-11-02 | Fuji Heavy Ind Ltd | Method for controlling ignition timing of sequential turbo engine |
| JPH10213055A (en) * | 1997-01-30 | 1998-08-11 | Fuji Heavy Ind Ltd | Engine ignition timing controller |
| JP2002317741A (en) * | 2001-04-24 | 2002-10-31 | Mikuni Corp | Ignition timing control device for single cylinder four- cycle engine |
| CN101070793A (en) * | 2007-06-15 | 2007-11-14 | 清华大学 | Engine jet based on crankshaft absolute corner sensor and ignition control device |
| CN102410095A (en) * | 2010-09-21 | 2012-04-11 | 日立汽车系统株式会社 | Apparatus for and method of controlling variable valve timing mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58185956A (en) * | 1982-04-23 | 1983-10-29 | Yamaha Motor Co Ltd | Electronic speed controller for engine |
| JPH0252968U (en) * | 1988-10-12 | 1990-04-17 | ||
| JP3195479B2 (en) * | 1993-11-16 | 2001-08-06 | トヨタ自動車株式会社 | Fuel injection control system for diesel engine |
| JPH08326552A (en) * | 1995-05-31 | 1996-12-10 | Matsushita Electric Ind Co Ltd | Ignition timing control device for internal combustion engine |
| JPH11351113A (en) * | 1998-06-05 | 1999-12-21 | Yamaha Motor Co Ltd | Ignition timing controller for internal combustion engine |
-
2014
- 2014-06-03 JP JP2014114903A patent/JP6301204B2/en active Active
-
2015
- 2015-06-03 WO PCT/JP2015/066104 patent/WO2015186761A1/en active Application Filing
- 2015-06-03 CN CN201580040311.3A patent/CN106536909B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288137A (en) * | 1992-04-03 | 1993-11-02 | Fuji Heavy Ind Ltd | Method for controlling ignition timing of sequential turbo engine |
| JPH10213055A (en) * | 1997-01-30 | 1998-08-11 | Fuji Heavy Ind Ltd | Engine ignition timing controller |
| JP2002317741A (en) * | 2001-04-24 | 2002-10-31 | Mikuni Corp | Ignition timing control device for single cylinder four- cycle engine |
| CN101070793A (en) * | 2007-06-15 | 2007-11-14 | 清华大学 | Engine jet based on crankshaft absolute corner sensor and ignition control device |
| CN102410095A (en) * | 2010-09-21 | 2012-04-11 | 日立汽车系统株式会社 | Apparatus for and method of controlling variable valve timing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015229929A (en) | 2015-12-21 |
| JP6301204B2 (en) | 2018-03-28 |
| CN106536909B (en) | 2019-09-20 |
| WO2015186761A1 (en) | 2015-12-10 |
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