CN1112987A - Ignition device for double-cylinder internal combustion engine - Google Patents
Ignition device for double-cylinder internal combustion engine Download PDFInfo
- Publication number
- CN1112987A CN1112987A CN 95102271 CN95102271A CN1112987A CN 1112987 A CN1112987 A CN 1112987A CN 95102271 CN95102271 CN 95102271 CN 95102271 A CN95102271 A CN 95102271A CN 1112987 A CN1112987 A CN 1112987A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- pulse
- reference position
- cylinder
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
A double-cylinder ignition device for an internal combustion engine, wherein 4 detected bodies 1-4 are provided at equal intervals on a rotating body rotating in synchronization with a crankshaft of the internal combustion engine, a pulse train is obtained by detecting the passing state of the detected bodies with a sensor, one of the detected bodies is different from the other one of the detected bodies to form a special point in the pulse train, the front end of the special point pulse and the front end of the pulse subsequent to the special point pulse are used as ignition references of respective cylinders, and the arrangement relationship between the sensor and the detected bodies 1-4 is adjusted to generate an ignition signal. When the internal combustion engine is started, an ignition signal which is synchronously electrified with the rear end of the special point pulse and synchronously deenergized with the rear end of the latter pulse of the special point pulse is generated according to two different discrimination functions, so that the stepping advance angle is realized.
Description
The present invention system is about being loaded in the ignition mechanism of the double cylinder IC engine on the cart, particularly the improvement of the apparatus structure that firing characteristic is used when improving engine starting.
In this ignition device for two-cylinder internal combusion engine, as everyone knows, be on the circumference of the rotating component that rotates synchronously with bent axle, a plurality of detected bodies (projection) to be set, detect sensor etc. by electromagnetism it is detected obtaining rotation angle information, and then produce fire signal again according to the rotation output of internal-combustion engine.
Usually, need when detecting the angle information of rotating component, take out as the reference position special angle position rotating component, be used for producing this fire signal, so in order to take out this reference position, known method is:
(A) a plurality ofly be uniformly-spaced configuration being detected of body except that above-mentioned, and in the pulse sequence that detects output such as sensor by above-mentioned electromagnetism, form the particular point that does not wait with other interval.
(B) equally spaced dispose above-mentioned a plurality of body that is detected, make the width of one of them bigger simultaneously, detect in the pulse sequence that sensor etc. exported at above-mentioned electromagnetism and form the particular point different with other pulse amplitude width than the width that other is detected body.
In addition, when internal-combustion engine rotational speed changed, in order correctly to detect its particular point from the context of above-mentioned pulse sequence, promptly the said reference position was adopted following reference position method for detecting usually, for example:
(1) with the pulse interval T of 3 pulses recurring
I-2, T
I-1With T
iFor variable calculates discriminant function f
1, promptly
f
1＝（T
i-1）＾2/（T
i-2×T
i）
In the formula: " ^ " represents power
This discriminant function f
1The point that is higher than set value is as said reference position (occasion of above-mentioned (A)),
(2) with the pulsewidth Tw of 3 pulses recurring
I-2, Tw
I-1With Tw
iFor variable is calculated discriminant function f
2, promptly
f
2＝（Tw
i-1）＾2/（Tw
i-2×Tw
i）
In the formula, " ^ " represents power
With this discriminant function f
2Surpass the above point of set value as said reference position (above-mentioned occasion (B)).
Yet, in this double cylinder IC engine, be in compression stroke during as if starting, be so-called compression ignite phenomenon because spark plug no flashover also can be ignited naturally, sharply rising of rotating speed at this moment.When such rotating speed can rapid change, increase the above-mentioned quantity that is detected body, and set its sample same period and execution cycle not really thick and fast and just have the problem that the said reference position is gone out by flase drop.
In the past, for example open in the clear 63-309750 communique disclosed the spy, be the discriminant function of suitably selecting to be used to detect the said reference position with detect corresponding to the cylinder of internal combustion engine upper dead center be detected the body configuration relation, promptly set out the suitable igniting benchmark of each cylinder.
Specifically, for example, on above-mentioned rotor, 1-4 is set and is detected body, and make the 2nd being detected body and forming in 90 ° of bent axle igniting internal combustion engines of V-type twin-tub of above-mentioned particular point wherein, when using above-mentioned discriminant function f than the big of other with 90 ° of equal intervals
2The time, then making the 1st, 2,3 two upper dead centers with two cylinders that constitute this internal-combustion engine that are detected in the body corresponding, is 90 ° the particular point formation pulse pulse last with it or the pulse and the igniting benchmark of a pulse thereafter as each cylinder of particular point formation with mutual potential difference promptly.
So just can prevent to detect the said reference position in the rapid rotation speed change mistiming that causes because of reasons such as compression ignites.
Like this, consider the characteristic and the characteristic of internal-combustion engine itself of discriminant function, emphasize that as if the concerted action that makes it electrical action of above-mentioned particular point selects to be detected the configuration relation of body, just can positively prevent the flase drop of said reference position.
So, in recent years in order to improve the startability of double cylinder IC engine, and when starting, it has adopted execution and the corresponding stepping advance angle of internal-combustion engine rotational speed, foreshorten to controlling method firing time that produces the initial used time of detonation.
This kind stepping advance angle is to utilize to be accompanied by to detect sensor etc. with above-mentioned electromagnetism and detect the forward position of the pulse that is detected body and exports and back edge, when engine starting being set in retardation angle side (pulse back edge) its firing time, and after the initial detonation of internal-combustion engine a kind of method that is set in advance side (pulse front edge) its firing time, owing to adopt such stepping advance angle that internal-combustion engine is successfully started.
At this, the reference position method for detecting that in the V-type double cylinder IC engine, adopts the above-mentioned past with prevent the method that flase drop goes out, and when carrying out controlling firing time, following new problem is displayed with this stepping advance angle.
For example, the pulse that forms of pulse pulse last with it that particular point is formed in order to make reference position that 90 ° of unlikely generations of bent axle igniting internal combustion engine of V-type twin-tub go out as flase drop as described in lighting a fire or particular point and one pulse thereafter are as the igniting benchmark of each cylinder.Make the ignition location that comprises initial detonation must be arranged in the particular point part of a certain cylinder for this reason.
So, in order to form above-mentioned stepping advance angle in these cases, will be when its incipient detonation to from as the forward position of the formed pulse of particular point of igniting benchmark to the pulsewidth of other pulse that does not form particular point the suitable time perform calculations, and need only the time portion of calculating to be done the delay (delay angle is arranged) of actual firing time.
Yet with this so-called calculation output control and set incipient detonation occasion constantly, can produce as shown in Figure 10 because of engine starting the time rotation speed change new problem brought.
Promptly in Figure 10, Figure 10 (a) shows the cylinder circulation that the igniting benchmark is positioned at above-mentioned particular point part, Figure 10 (b) illustrates the sensor output when utilizing illustrated particular point establishing method in above-mentioned (B) method, and Figure 10 (c) illustrates the output of its shaping waveform, especially when engine starting, can produce the rotation speed change of following situation
(1) in this cylinder compresses stroke, along with the approaching upper dead center TDC shown in Figure 10 (a) of piston, its rate of climb weakens.
(2) the piston rate of climb (transient speed) sharply descends then has the situation of discharge to a certain degree different because of battery fully charges with battery, in Figure 10 (d) respectively with characteristic curve L
1With L
2Express this difference.
According to described rotation speed change, the igniting output of carrying out above-mentioned calculation output control corresponding to this rotation speed change then respectively by Figure 10 (e) and the state (f) change.
That is, the common above-mentioned calculation time during as TSPK, is being to use with this
TSPK＝（θSTEP/90°）×T90
In the formula, θ STEP is the stepping advance angle
T90 is interpulse period
Calculate.So when this operation values TSPK was exported as timing setting, the angle of its timing value was represented with θ SPK, then
θspk＝6×Ne×TSPK
In the formula: Ne be revolution (rev/min)
TSPK is timing value (second)
Angle θ spk diminishes with the decline of revolution Ne.When battery fully charges and since under the battery discharge status when the upper dead center the rapid reduction of rotating speed all can as with as shown in Figure 10 (f) of Figure 10 (e) contrast become
θSTEP′＜θSTEP
Become the state of the value that more close advance side is arranged
Therefore, even detonation regularly is set in the more close retardation angle side than above-mentioned upper dead center TDC as much as possible at the beginning of following of the situation that battery fully charges, when battery discharge, along with discharge is constantly carried out, first detonation regularly also can be moved to advance side.
So shown in Figure 10 (f), along with battery constantly discharges, this detonation just regularly is arranged on the more close advance side from above-mentioned upper dead center TDC, the rising limit position causes detonation when will do not reached at the piston of this cylinder, cause internal-combustion engine reverse etc., thereby can't produce effective moment of torsion, in general, this phenomenon is called recoil.
The present invention proposes in view of above-mentioned actual conditions, its purpose is to provide a kind of ignition mechanism of double cylinder IC engine, its decapacitation inerrably detects outside the reference position, such recoil of producing no matter battery is in which kind of state all can effectively prevent to be accompanied by the reality of stepping advance angle, thus its starting performance improved.
In order to reach this purpose, the ignition mechanism of double cylinder IC engine of the present invention is provided with and the synchronous rotor that rotates of the bent axle of double cylinder IC engine, with respect to a plurality of bodies that are detected that are provided with at interval of angle same at interval of the upper dead center bent axle between this rotor and this cylinder of internal combustion engine, be detected the sensing device of body detecting these by the pulse sequence angle information output of state, and the fire signal generating apparatus that is added on fire signal on this ignition coil for internal combustion engine according to the angle information generation of this output, above-mentioned a plurality of be detected body comprise its shape and other all to be detected body different, in the pulse sequence of above-mentioned sensing device output, form the particular point pulse form adult of particular point pulse, above-mentioned sensing device and above-mentioned a plurality of body that is detected are in uphill process and near another steam-cylinder piston when being positioned at the upper dead center at a steam-cylinder piston of internal-combustion engine, make sensing device become the relative position relation configuration with above-mentioned particular point pulse form adult, above-mentioned fire signal generating apparatus is provided with the 1st reference position setting device of setting the 1st reference position according to first discriminant function that detects the above-mentioned particular point pulse back edge in the above-mentioned angle information, with the 2nd reference position setting device of setting the 2nd reference position according to the 2nd discriminant function that detects a back pulse back edge of above-mentioned particular point pulse in the above-mentioned angle information, when engine starting, above-mentioned fire signal begins to above-mentioned spark coil energising according to the 1st reference position of above-mentioned setting, and produces the signal that makes this spark coil that begins to switch on outage according to the 2nd reference position of above-mentioned setting.
If sensing device and a plurality of body that is detected are in above-mentioned configuration relation, then same with method in the past aspect going out at the flase drop that prevents the reference position, emphasize electrical action to particular point, the the above-mentioned the 1st and the 2nd reference position guarantees that then it detects precision, promptly when making the internal-combustion engine rotational speed rapid change, owing to be the basis with the discriminant function so that the possibility that these reference position flase drops go out takes place is extremely low because of above-mentioned compression ignite etc.
Above-mentioned fire signal generating apparatus produces the fire signal that directly makes above-mentioned spark coil energising and outage according to the 1st and the 2nd reference position of setting corresponding to above-mentioned two pulse back edges when engine starting.
For 4 stroke double cylinder IC engines, its igniting output has the normal spark of compression stroke and the invalid spark of exhaust stroke., in a certain at least cylinder, can produce earlier under the starting conditions of normal state, can shorten the first used time of detonation of internal-combustion engine naturally owing to export corresponding to the generation direct ignition of the 1st and the 2nd reference position like this.
And, said structure according to the fire signal generating apparatus, it is the back edge of a back pulse of particular point pulse that the angle that causes detonation just so also can be not limited in above-mentioned the 2nd reference position, thereby can when engine starting, need not carry out above-mentioned calculation output control etc. and reach stable stepping advance angle, and then can not produced the stable firing characteristic of recoil.
Moreover, like this in the ignition mechanism of the double cylinder IC engine of Gou Chenging, the forward position of a pulse after above-mentioned particular point pulse front edge and the particular point pulse being decided to be the igniting benchmark of each cylinder of internal-combustion engine, above-mentioned fire signal generating apparatus also is provided with:
(a) in detecting above-mentioned angle information, after the forward position of each pulse, be that condition begins the device of switching on that begins to above-mentioned spark coil energising with last pulse corresponding to above-mentioned igniting reference pulse at every turn,
(b) from angle information, detect after the forward position of each pulse at every turn, under internal-combustion engine rotational speed reaches corresponding to above-mentioned igniting base condition greater than set rotating speed, make the power breaker of above-mentioned spark coil outage,
(c) above-mentioned particular point pulse front edge is being decided to be in the cylinder of the benchmark of lighting a fire, detecting from angle information after the forward position of each pulse, is that condition calculates the outage time of advent and it is set to operation control device regularly with this internal-combustion engine rotational speed less than the pulse of set rotating speed and corresponding above-mentioned igniting benchmark.
(d) in above-mentioned the 2nd reference position that sets when the energising of above-mentioned spark coil, force the igniting protective equipment of outage.
Even in the occasion that produces invalid spark owing to the engine starting condition earlier; by thereafter normal spark angle to detonation just; can be limited to the 2nd reference position by the switch on concerted action of igniting protective equipment of device and above-mentioned (d) of beginning of above-mentioned (a); be a back pulse back of particular point pulse along last; and, even also can satisfy the condition that realizes stable stepping advance angle in this case well.
No matter above-mentioned in addition which kind of starting conditions after internal-combustion engine detonation just, is promptly realized after the stepping advance angle, can realize the igniting action that precision is high and stable repeatedly by (a)-(d) each concerted action of installing.
More than all action effects can reach by working in coordination.And then the power breaker of so-called herein reference above-mentioned (b) is meant the threshold values speed of carrying out above-mentioned stepping advance angle with the set rotating speed of internal-combustion engine of operation control device (c).
In addition, also additional on each device of such (a)-(d) have:
(e) from above-mentioned angle information, detect after the back edge of each pulse at every turn, check the reference position testing fixture that above-mentioned the 1st and the 2nd benchmark set that sets is whether suitable respectively according to the above-mentioned the 1st and the 2nd discriminant function.
(f) judge the 1st and the 2nd reference position by this reference position testing fixture which side for not the time; remove the setting of the 1st and the 2nd reference position and restart the above-mentioned the 1st and the above-mentioned fire signal generating apparatus of the protective gear of the 2nd reference position setting device etc., it can
By means of sensing device and a plurality ofly be detected the above-mentioned configuration relation of body and guarantee the precision that detects of the 1st and the 2nd reference position, can make in addition:
In the igniting action after detonation just, according to its reference position check or according to these reference positions releasing/setting the tracking performance that makes internal-combustion engine again improves.
That is, no matter internal-combustion engine rotational speed can both be guaranteed normal firing time at ordinary times as where changing.
And then the above-mentioned the 1st and the 2nd reference position setting device that constitutes the fire signal generating apparatus is to detect setting according to the 1st and the 2nd discriminant function, is that the reference position of object detects, setting device with it in for example following state.
That is, above-mentioned the 1st reference position setting device is:
When with Tw
iAs the pulsewidth of the existing pulse of above-mentioned pulse sequence, and with Tw
I-1When representing the pulsewidth of its last pulse, calculate
F（t
1）＝Tw
i/Tw
i-1
As the 1st discriminant function, with resulting functional value F(t
1) be higher than constant K 1 and set the 1st reference position for condition;
Or, using Tw
iRepresent the pulsewidth of current pulse in the pulse sequence, use Tp
I-1When representing the interpulse period of its last pulse, similarly calculate with above-mentioned the 1st discriminant function
F（t
2）＝Tp
i-1/Tw
i
And with resulting functional value F(t
2) to be lower than constant k2 be the device that condition is set the 1st reference position.
And above-mentioned the 2nd reference position setting device is:
Using Tw
iRepresent the pulsewidth of existing pulse in the above-mentioned pulse sequence, use Tw
I-1Represent the wide of its last pulse, use Tw
I-2When representing the pulsewidth of preceding two pulses, calculate as the 2nd discriminant function
F（t
3）＝（Tw
i-1）＾2/（Tw
i-2×T
i）
In the formula: " ^ " represents power
And with the functional value F(t of its gained
3) set the device of the 2nd reference position for condition greater than constant K 3.
Detecting respectively, set with it according to such discriminant function is the reference position of object, thereby the influence that internal-combustion engine rotational speed is changed is suppressed to inferior limit, detects and sets with the precision higher than these reference positions.
Below in conjunction with accompanying drawing, describe the present invention.
Fig. 1 is the skeleton diagram of an example structure of expression ignition device for two-cylinder internal combusion engine of the present invention.
Fig. 2 is that the formation angle information of this embodiment device of expression the rotor of part takes place and is detected the front view of body concrete structure.
Fig. 3 is the plotted curve of the occurring principle of expression stepping advance angle.
Fig. 4 is the plotted curve that the pulse sequence of this embodiment device extraction of expression and the function waveform that detects the used discriminant function in reference position of this embodiment's internal-combustion engine corner regularly are provided with.
Fig. 5 is the angle transducer interrupt handling routine is carried out in expression with this embodiment device a flow chart.
Fig. 6 lights a fire with this embodiment device to export the flow chart of the processor of controlling.
Fig. 7 is expression with light a fire when the engine starting time diagram of operating state of this embodiment device.
Fig. 8 for expression with when engine starting, the light a fire time diagram that contrasts with Fig. 7 of operating state of ignition mechanism in the past.
Fig. 9 is expression with ignition mechanism in the past light a fire when engine starting operating state and time diagram Fig. 7 contrast.
Figure 10 is when representing by means of computing output control realization stepping advance angle, because internal-combustion engine rotational speed changes the time diagram of caused problem.
Figure 1 illustrates an embodiment of ignition device for two-cylinder internal combusion engine of the present invention.
This embodiment device is to be object with 90 ° of bent axles of two-wheel vehicle used V-type twin-tub, 4 stroke IC engines of lighting a fire, and is made of the slyness starting that realizes by means of the stepping advance angle beginning from first detonation, the device that can keep firing time thereafter simultaneously well.
This embodiment's structure at first, is described with reference to Fig. 1.
In this embodiment device, internal-combustion engine 10 is 4 stroke IC engines that above-mentioned 90 ° of bent axles of two-wheel vehicle used V-type twin-tub are lighted a fire.In Fig. 1, for convenience, its 1st cylinder (#1) 11 and the 2nd cylinder (#2) 12 parts only are shown.
In addition, angle information generating unit 20 is set near the bent axle of unshowned in the drawings internal-combustion engine 10, extracts the corner information of above-mentioned internal-combustion engine 10 by this angle information generating unit 20.
That is, in this angle information generating unit 20, rotor 21 is to rotate synchronously on the bent axle of internal-combustion engine 10, for example, and disc-shaped part.What 4 magnetic materials were set on the circumference of this rotor 21 is detected body 1-4.When these are detected body 1-4 and turn over, detect sensor (angle transducer) 22 by fixing electromagnetism in its vicinity angle signal is detected, therefore, from the corner synchronous pulse sequence of sensor 22 outputs with above-mentioned internal-combustion engine 10.
Ignition mechanism need be taken out the angle information that internal-combustion engine 10 is above-mentioned rotor 21 as described above, and the special angle position that will take out rotating component 21 simultaneously is as the reference position.In this embodiment's device, the above-mentioned configuration structure that be detected body 1-4 relative with rotor 21 is state shown in Figure 2.
That is, as shown in Figure 2, the above-mentioned body 1-4 that respectively is detected is relative with rotor 21, is 4=90 ° of equal angles arranged spaced of θ 1=θ 2=θ 3=θ, and the protuberance width that wherein is detected simultaneously body 1,3 and 4 is, for example,
θ W
1=θ W
3=θ W
4=10 °, form equal angles, just be detected body 2 as particular point pulse form adult, its protuberance width is, for example,
θ W
2=50 °, form and the above-mentioned different angle of body 1,3 and 4 that is detected.
Thereby, just be detected configuration space θ 1-θ 4 and the jut width θ W of body 1-4 with these from the pulse preface of the sensor 22 output
1-θ W
4Corresponding, so that being arranged in 4 pulses, 1 ratio generates the particular point (particular point pulse) bigger than other pulsewidth.Angle information generating unit 20 is passed to control gear 30 with this state output pulse sequence and as the angle information SiG of internal-combustion engine 10.
As shown in Figure 1, control gear 30 is made of waveform shaping circuit 31, microcomputer 32, firing circuit 33 and 34.
In addition, waveform shaping circuit 31 is to carrying out shaping from above-mentioned angle information generating unit 20 as the waveform of the pulse sequence of angle information SiG output, and it is transformed into the circuit of bifurcation pulse train NSiG.This pulse train NSiG through shaping then imports in the microcomputer 32 as interrupt signal.
Begin smooth starting by means of the stepping advance angle from first detonation
Can keep firing time well after the detonation just
Fire signal.Describe the generator of this fire signal that utilizes microcomputer 32 in detail below with reference to Fig. 3-Fig. 6.
Firing circuit 33 and 34 is to utilize microcomputer 32, according to the fire signal that is generated, and controls the circuit of the on/off electricity of each spark coil 40 and 50.
These spark coils 40,50 will produce high voltage by corresponding firing circuit energising, also outage subsequently in its Secondary coil.The high voltage that is produced drives its corresponding spark plug 60 respectively and produces spark with 70().These spark plugs 60,70 be naturally in the corresponding internal-combustion engine 10 the above-mentioned the 1st and the 2nd cylinder 11,12 and the configuration.
In addition, by 60,70 pairs of each cylinders of spark plug 11,12 igniting the time, except can adjusting, in the device of the foregoing description, also being arranged to especially corresponding to time of the piston arrives upper dead center of these cylinders usually:
Make when piston is between the rising stage and near another cylinder piston arrives upper dead center in a cylinder the sensor 22 with as particular point pulse form adult to be detected body 2 relative.
These sensors 22 and the configuration relation that respectively is detected body 1-4, the benchmark of promptly lighting a fire of setting by such relation.
Fig. 3 is the plotted curve of the above-mentioned stepping advance angle handling principle of expression, and before the program that the fire signal that generates the present embodiment device by above-mentioned microcomputer 32 is described, its stepping advance angle makes a brief explanation earlier.
As shown in Figure 3, so-called stepping advance angle is meant to utilize to be accompanied by and is detected detecting of body 1-4 and from the pulse front end and the rear end of the sensor 22 outputs, be trailing edge and the rising edge of above-mentioned bifurcation reshaping signal NSiG, be set in retardation angle side (rising edge of signal NSiG) firing time during internal-combustion engine 10 startings, and will be set in the starting method of advance side (signal NSiG trailing edge) its firing time after internal-combustion engine 10 detonations just.Owing to adopt such stepping advance angle, then can accomplish as previously mentioned internal-combustion engine 10 is successfully started.
In Fig. 3, the upper dead center position during 10 startings of arrow P 1 expression internal-combustion engine if make the rising edge timing of this position P1 at the above-mentioned signal NSiG of retardation angle side, then also needn't be worried above-mentioned recoil can take place after detonation just.
Among Fig. 3, the threshold value revolution of the internal-combustion engine 10 of stepping advance angle is used in " Nstp " expression, and " idle running " then represents the unloaded revolution of internal-combustion engine 10, the advance angle value of " θ STEP " expression stepping advance angle.In addition, the curve table among Fig. 3 illustrates desired firing time of characteristic.
In the present embodiment, no matter what state just can realize such stepping advance angle without computing output control etc., generate the fire signal of internal-combustion engine 10 by following program by means of above-mentioned microcomputer 32.
The processing of being carried out with microcomputer 32 in order to detect and set the reference position with reference to Fig. 4 explanation earlier according to above-mentioned particular point.
Fig. 4 among Fig. 4 (a) represents above-mentioned angle information generating unit 20(sensor 220) angle information (pulse sequence) SiG that exported, the waveform shaping signal NSiG that Fig. 4 (b) expression above-mentioned waveform shaping circuit 31 corresponding with this angle information SiG exported.In microcomputer 32, utilize trailing edge and the rising edge of this reshaping signal NSiG to interrupt, all respectively pulsewidth Tw and the pulse interval Tp of signal NSiG are being measured with the state (d) at every turn as Fig. 4 (c).
In addition, the sampling number of times of the above-mentioned signal NSiG when microcomputer 32 is used in Fig. 4 among Fig. 4 (e) expression, Fig. 4 (f) expression serves as the angular position information Npos of above-mentioned the 1st cylinder 11 of igniting benchmark with a back pulse of particular point pulse (pulse of the wide θ of being W2).Each angular orientation of in microcomputer 32, grasping each cylinder as " 0 " with angular position information Npos as the igniting benchmark.
So when the pulsewidth Tw of metering from the trailing edge of above-mentioned reshaping signal NSiG to the time of rising edge, owing to exist above-mentioned particular point, the content of its instrumentation just becomes the state shown in Fig. 4 (g).
At this, even internal-combustion engine 10 rotating speeds change, owing to there is the particular point pulse to exist, microcomputer 32 also can positively be discerned the rising edge of particular point pulse.If use Tw
iRepresent the pulsewidth of measured existing pulse, and use Tw
I-1The pulsewidth of measured its last pulse of expression is right
F（t
1）＝Tw
i/Tw
i-1
Carry out computing, with gained functional value F(t
1) greater than constant K
1For condition is discerned rising edge with above-mentioned particular point pulse.Just the rising edge of the particular point that identifies is like this called the 1st reference position below, and discriminant function F(t
1) then be shown among Fig. 4 (h) with the relation of constant K 1.
In addition, as the 1st reference position of above-mentioned particular point rising edge of a pulse, also will be with Tw
iThe pulsewidth that the existing pulse of representative records is used Tp
I-1The time lag that representative is measured according to the last pulse of this pulse, and right
F（t
2）＝Tp
i-1/Tw
i
Carry out computing, also can gained functional value F(t
2) be that condition is discerned less than constant k2.The Interrupt Process that is described in detail of Fig. 5 is then as utilizing this discriminant function F(t then
2) and constant k2 set the device of the 1st reference position.Discriminant function F(t
2) be shown among Fig. 4 (i) with the relation of constant k2.
On the other hand, in microcomputer 32, to improve the judgement precision of reference position and stably realize above-mentioned stepping advance angle, also can discern the rising edge of a back pulse of above-mentioned particular point pulse with method for distinguishing.
That is, in microcomputer 32, use Tw
iThe pulsewidth of the existing pulse that representative records is used Tw
I-1The pulsewidth of its last pulse of recording of representative, use Tw
I-2The pulsewidth of preceding 2 pulses that representative records, computing
F（t
3）＝（Tw
i-1）＾2/Tw
i-2×Tw
i（3）
In the formula: " ^ " represents power
Functional value F(t with gained greater than constant K 3
3) discern the rising edge of a back pulse of above-mentioned particular point pulse for condition.Below, the rising edge of a back pulse of the particular point pulse that identifies is like this called the 2nd position reference, these discriminant functions F(t
3) be shown among Fig. 4 (j) with the relation of constant K 3.
And then, Fig. 5 and Fig. 6 represent based on the identification of such reference position or grasp angular orientation Npos and the angle transducer Interrupt Process and igniting output control processing program of the microcomputer 32 that carries out, below, with reference to Fig. 5 and Fig. 6 in detail the program that produces fire signal with microcomputer 32 is described in detail in the lump.
After in Fig. 1, with abridged starter motor among the figure etc., making internal-combustion engine 10 startings, just from above-mentioned angle information generating unit 20(sensor 22) the angle information SiG of output shown in Fig. 4 (a), and from the above-mentioned waveform shaping circuit 31 waveform shaping signal NSiGs of output shown in Fig. 4 (b).So microcomputer 32 utilizes its trailing edge and rising edge to interrupt (angle transducer interruption) just according to the waveform shaping signal NSiG that exports like this, each returns and all by program shown in Figure 5 Interrupt Process is carried out repeatedly.
Promptly when such interruption taken place, microcomputer 32 locked in step 100 and interrupts taking place constantly, and its value (timing value) is remembered in internal memory.
Then, microcomputer 32 judges that in step 101 interrupting by rising edge still is that trailing edge produces.When interrupting being situation about producing by rising edge, measure above-mentioned pulsewidth Tw with step 200
i,, measure above-mentioned pulse interval Tp with step 300 being under the situation about producing by trailing edge
i
For producing the occasion of interrupting by rising edge, microcomputer 32 judges to represent whether the sign FLAG1 that sets out above-mentioned the 1st reference position inserts with step 210 again, will indicate that FLAG1 removes to this during beginning.
Like this, microcomputer 32 just carries out following a succession of processor under this occasion:
(1) basis is at resulting pulsewidth Tw of this moment
iWith pulse interval Tp
I-1Following formula (2) is carried out computing, obtain above-mentioned discriminant function F(t
2) value (step 211).
(2) with calculated discriminant function F(t
2) value be condition (step 212) less than above-mentioned constant k2, drive the 1st cylinder 11(#1) pairing firing circuit (firing circuit 33), begin to the spark coil corresponding (spark coil 40) energising (step 213) with it.Use IG below
1Expression is the 1st cylinder 11(#1 therewith) relevant fire signal.
(3) insert above-mentioned sign FLAG1, finish the detecting and set of the 1st reference position (step 214).
In the present embodiment device, the processor of step 211-214 has constituted the 1st reference position setting device.
In above-mentioned steps 212, when so that the above-mentioned discriminant function F(t that tries to achieve
2) value to be not less than constant k2 be aim when judging, the pulse of interrupting will be withdrawed from Interrupt Process one time as not being and the corresponding pulse in above-mentioned the 1st reference position.
On the other hand, produce by rising edge if interrupt, above-mentioned sign FLAG1 be placed into or above-mentioned steps 214 in sign the inserting under the completed occasion of FLAG1,32 of microcomputers judge in step 220 that further above-mentioned the 2nd reference position of expression sets the sign FLAG2 that finish and whether be placed into.This sign FLAG2 also is eliminated already in advance.
(1) according to resulting 3 continuous pulsewidth Tw of this moment
i, Tw
I-1And Tw
I-2Following formula (3) is carried out computing, obtain above-mentioned differentiation and count F(t
3) value (step 221).
(2) in the hope of discriminant function F(t
3) value be condition (step 222) greater than above-mentioned constant K 3, stop to drive above-mentioned the 1st cylinder 11(#1) pairing firing circuit (firing circuit 33), make its pairing spark coil (spark coil 40) outage (step 223).Because outage produces high pressure in its Secondary coil in this wise, corresponding spark plug (spark plug 60) is driven (arcing), promptly produces spark owing to cut off the power supply in this cylinder.
(3) insert above-mentioned sign FLAG2, (step 224) finished in detect and the setting of the 2nd reference position.
In the device of present embodiment, constitute the 2nd reference position setting device by the processor of these steps 221-224.
In above-mentioned steps 222, when with the above-mentioned discriminant function F(t that tries to achieve
3) value be not more than constant K
3When judging for aim, the pulse of interrupting will be withdrawed from Interrupt Process one time if do not correspond to above-mentioned the 2nd reference position.
And in above-mentioned steps 224, if inserting of FLAG2 of sign finished, then this Interrupt Process has also just been finished.
On the other hand, interrupting is the occasion that is caused by rising edge, some among above-mentioned sign FLAG1 and the FLAG2 inserted, promptly follow the above-mentioned the 1st and the setting of the 2nd reference position and producing after the initial spark, microcomputer 32 carries out the affirmation of the reference position of above-mentioned setting is handled in step 230.
When confirming to handle in the reference position, microcomputer 32 is according to above-mentioned discriminant function F(t
2), F(t
3) with their each self-corresponding constant k2s, K3, confirm the setting correctness of the above-mentioned the 1st and the 2nd reference position.
The result's (step 231) who confirms when this reference position is judged as when unusual, then carries out abnormal handling that above-mentioned sign FLAG1 and FLAG2 are removed simultaneously, so this Interrupt Process finishes (step 232) immediately.At this moment, interrupting carrying out repeatedly once more above-mentioned the 1st reference position according to the rising edge after again sets and handles (step 221-214) and set with the 2nd reference position and handle (step 221-224).
And be judged as just often in result's (step 231) of said reference location confirmation, be under the condition that causes of the rising edge of the pulse (pulse of angular position information Npos=0) that sets by each cylinder firings benchmark, in this interruption if be in the what is called igniting preservative treatment that "on" position is then cut off the power supply immediately.
And then the processor that is carried out in above-mentioned steps 230-231 has constituted the reference position testing fixture of present embodiment device.The processor that is carried out in the above-mentioned steps 232 constitutes the protective gear of present embodiment device, and the program of being carried out in the above-mentioned steps 233 then constitutes the igniting protective equipment of present embodiment device.
Below, just interrupting during (angle transducer interruptions) handle, be that the processing of the microcomputer 32 when being caused by trailing edge is moved and described to its interruption.
Under the occasion that trailing edge interrupts, microcomputer 32 is paired pulses Tp blanking time in above-mentioned steps 300
iMeasure, interrupt declaring above-mentioned sign FLAG2 in step 310 then and whether insert.
So, just during the state that this sign FLAG2 has removed, withdraw from Interrupt Process.If sign FLAG2 inserts, then the microcomputer 32 output control processing of lighting a fire in step 320.The detailed description of control processing is exported in relevant this igniting, figure 6 illustrates its example.
That is, when this igniting output control processing, microcomputer 32 is at first the content update (step 3201) of the angular position information Npos of above-mentioned identification, judges the manner of execution (step 3202) that internal-combustion engine 10 is present then.Handle is decided to be threshold value than the slightly high revolution of idle revolutions shown in the prior figures 3 when the acts of determination mode, then carry out to be the judgement of aim, to be the judgement of aim with " synchronous waveform mode " if this threshold value revolution of ratio of revolutions of internal-combustion engine 10 is low at this moment if then carry out with " s operation control mode " than threshold value revolution height.
Carry out the microcomputer 32 of this sample loading mode judgement if the mode that determines is " s operation control mode " (step 3203), then carry out the well-known s operation control of relevant firing time and handle (step 3220), so that it satisfies desired firing time of the characteristic shown in the field that is higher than idle revolutions among Fig. 3.
On the other hand, then carry out following processing to realize above-mentioned stepping advance angle if be judged to be " synchronous waveform mode " (step 3203) with microcomputer 32:
(1) according to Tp interpulse period of said determination
iJudge the revolution (step 3210) of internal-combustion engine 10 at that time.
(2) if the revolution of described judgement less than the threshold value revolution Nstp(step 3211 of above-mentioned stepping advance angle), then for condition (step 3214) its pairing spark coil is begun energising (step 3215) so that the angular position information Npos of above-mentioned renewal equals " 3 ".Under the little situation of the above-mentioned threshold value revolution of the ratio of revolutions Nstp that judges and the angular position information Npos of above-mentioned renewal when be not " 3 ", then withdraw from this igniting and export control processing.
(3) at the revolution of above-mentioned judgement during greater than the threshold value revolution Nstp of above-mentioned stepping advance angle (step 3211), then equaling " 0 " with above-mentioned renewal angular position information Npos is that condition (step 3212) is to its pairing spark coil outage (step 3213).
(4) in addition, under the big situation of the threshold value revolution Nstp of the above-mentioned stepping advance angle of the ratio of revolutions of above-mentioned judgement (step 3211), if the angular position information Npos of above-mentioned renewal is " 3 " (step 3214), then begin to its pairing spark coil energising (step 3215).And then in this case,, then withdraw from this igniting output control processing if the angular position information Npos of above-mentioned renewal is " 3 ".
In this kind " synchronous waveform mode ", all carry out the processing of such (1)-(4) repeatedly by each interruption that the trailing edge of waveform shaping signal NSiG carries out.
But, for the cylinder of setting igniting benchmark (angular position information Npos=0) by the trailing edge of above-mentioned particular point pulse, be the 2nd cylinder 12(#2 in the present embodiment device), it is littler when being the judgement of aim to carry out threshold value revolution Nstp with internal-combustion engine 10 ratio of revolutions stepping advance angles in step 3211, also will carry out: (5) are condition (step 3231) with the angular position information Npos of above-mentioned renewal for " 0 ", above-mentioned time T SPK up to outage is carried out computing (step 3233), and it is inserted (step 3233) in the timer internal.
S operation control as shown in phantom in Figure 6 handles 3230 by microcomputer 32 realizations.
At this, carry out this s operation control and handle 3230(step 3231-3233) processor constituted operation control device in the present embodiment device.
Similarly, the processor that is carried out in above-mentioned steps 3214-3215 has constituted the energising starting apparatus of present embodiment device.The processor that carries out among the above-mentioned steps 3212-3213 then constitutes the power breaker of present embodiment device.
Device by present embodiment carries out angle transducer Interrupt Process and the output of the igniting shown in Fig. 6 control processing as shown in Figure 5 repeatedly, when internal-combustion engine 10 startings, just can generate the fire signal IG of state as shown in Figure 7 therefrom
1And IG
2
Below, the igniting operating state of device when engine starting of using present embodiment is described in conjunction with Fig. 7.
The 1st cylinder 11(#1 of Fig. 7 among Fig. 7 (a) expression internal-combustion engine 10) with the 2nd cylinder 12(#2) the circulation of each cylinder, Fig. 7 (b) represents above-mentioned waveform shaping signal NSiG, Fig. 7 (c) then represents the above-mentioned angular position information Npos of each cylinder.
In addition, the igniting benchmark of diacritic " B# 1 " expression 1st cylinder 11 corresponding with Fig. 7 (a)-(c), " B# 2 " then represents the igniting benchmark of the 2nd cylinder 12.The igniting benchmark of the 1st cylinder 11 is arranged on the trailing edge (front end) of a back pulse of particular point pulse, and the igniting benchmark of the 2nd cylinder 12 then is arranged on the trailing edge (front end) of particular point pulse, and these are all with foregoing the same.
So far, the moment t of internal-combustion engine 10 before the compression stroke at the 1st cylinder 11 shown in Fig. 7 (d) begins freely
10During starting, by the angle transducer Interrupt Process among above-mentioned Fig. 5, at moment t
11Detect and set the 1st reference position, begin simultaneously to spark coil 40 energising, and at thereafter moment t
12Detect and set the 2nd reference position, make spark coil 40 outages simultaneously, the fire signal IG of its state shown in Fig. 7 (f)
1Change like that.
So, by means of making spark coil 40 outages, in the 1st cylinder, produce spark (normal spark) by above-mentioned spark plug 60, and at moment t
12Cause internal-combustion engine 10 initial detonations.The time of this detonation is just used " 0 " symbolic representation in Fig. 7 (d).In addition detonation just and for example shown in Fig. 7 (b) like that, be that rising edge (rear end) part by the back pulse of particular point pulse causes, promptly for top Fig. 3, causing on the more close retardation angle side than upper dead center position P1.
On the other hand, owing to cause detonation just, make revolution (speed) Ne of internal-combustion engine 10 begin to rise by state shown in Fig. 7 (e).So, after revolution Ne surpasses above-mentioned threshold value revolution Nstp, by the igniting output control processing of above-mentioned Fig. 6, for example for the 1st cylinder as Fig. 7 (f) with (b) in t constantly
15Or moment T
18Shown, produce spark in trailing edge (front end) part of the back pulse of above-mentioned particular point pulse, promptly by as Fig. 3 before as shown in state realize the stepping advance angle.And then, above-mentioned moment t
15The spark of the spark that is produced for producing in the exhaust stroke of flower cylinder becomes so-called invalid spark.
In addition, corresponding to such igniting action of the 1st cylinder 11, in the 2nd cylinder 12, produce its igniting action (fire signal IG with the state shown in Fig. 7 (g)
2Generation action).
In the 2nd cylinder, by the igniting output control processing of Fig. 6, so that its angular position information Npos equals the moment t of " 3 "
13Or t
16The time, spark coil 50 begins energising; Equal the moment t of " 0 " at angular position information Npos
14Or t
17The time make 50 outages of this spark coil.
On the other hand, internal-combustion engine 10 shown in Fig. 7 (h), the moment t before the compression stroke of the 2nd cylinder 12 begins
20Starting.
At this moment, do Interrupt Process, at moment t by the angle transducer of Fig. 5
12The place begins when detecting and setting the 1st reference position to spark coil 40 energisings, and at thereafter moment t
22Detect and set the 2nd reference position and make spark coil 40 outages, fire signal IG among its change of state such as Fig. 7 (j)
1Shown in.
But this moment is by above-mentioned fire signal IG
1The spark that is generated is invalid spark, and the actual detonation just of internal-combustion engine 10 is at t constantly thereafter
26Shi Fasheng's.In the case, undertaken at the moment of detonation just t by igniting preservative treatment (step 233 among Fig. 5) formerly
26The energising at place is cut off.
So just as shown in Fig. 7 (b), detonation just is rising edge (rear end) part in a back pulse of particular point pulse under this occasion, is promptly causing than the more close retardation angle side of upper dead center position P1 for previous Fig. 3.
Fig. 7 (i) expresses the passing of the revolution of internal-combustion engine 10 (speed) Ne in this case.
At this moment, corresponding to such igniting action of the 1st cylinder 11, carrying out the igniting action of form shown in Fig. 7 (k) in the 2nd cylinder 12.
Promptly in the case, the 2nd cylinder 12 equals the moment t of " 3 " by the igniting output control processing of Fig. 6 at its angular position information Npos
23Begin energising, and at the moment t that equals " 0 " from angular position information Npos
24Moment t behind process above-mentioned operation time of the TSPK21
25Cut off the power supply.Such computing output control is handled 3230(step 3231-3233 by s operation control shown in dotted lines in Figure 6) finish.Yet in the device of present embodiment, do not carry out such computing output control during first detonation.
Fig. 8 and Fig. 9 are igniting actions that for example formerly spy is opened disclosed device in the past in the clear 63-309750 communique and the accompanying drawing that compares is moved in the above-mentioned igniting of present embodiment device.
Above-mentioned device in the past utilizes waveform shaping signal NSiG output and interrupts (angle transducer interruption) by its trailing edge and rising edge, all carries out Interrupt Process by program repeat ground shown in Figure 5 each time.
But in device in the past, do not carry out the processing that relevant above-mentioned steps 210-214 is handled in the detecting of above-mentioned the 1st reference position, setting etc. and energising, and step 223 power down process of carrying out, promptly when the rising edge that utilizes above-mentioned signal NSiG interrupts, for example only according to above-mentioned discriminant function F(t
3) carry out the reference position setting and check processing.
On the other hand, the igniting when interrupting at the trailing edge that utilizes signal NSiG is exported aspect the control processing (step 320), then carries out equally with processing shown in Figure 6.
And then, in the example of Fig. 8, same with the foregoing description, the igniting benchmark B# 1 of the 1st cylinder is arranged on after the particular point pulse trailing edge (front end) of a pulse to be located, and the trailing edge (front end) that the igniting benchmark B# 2 of the 2nd cylinder is arranged on the particular point pulse is located, this moment, internal-combustion engine was as shown in Fig. 8 (d), if the moment t before the compression stroke of the 1st cylinder begins
30Begin starting, then the igniting action is carried out under following state:
At first, at moment t
31, according to above-mentioned discriminant function F(t
3) detect and set the reference position;
According to igniting output control processing shown in Figure 6, at moment t
32Beginning is to the 2nd cylinder (in the spark coil corresponding with it of correctly saying so) energising (referring to Fig. 8 (g));
Then, at moment t
33Arrive the igniting benchmark of the 2nd cylinder and carve the threshold value revolution Nstp that engine speed (speed) Ne does not reach the stepping advance angle at this moment, handle that equally time T SPK31 is performed calculations, and a calculation time T SPK31 is inserted regularly (with reference to Fig. 8 (e) and (g)) by IGNITION CONTROL as shown in Figure 6;
Moment t behind the process timing
34Stop to the energising of the 2nd cylinder, at moment t
34Cause detonation just (referring to Fig. 8 (g) with (d)).
And then, except that the inspection of reference position is only carried out with an above-mentioned discriminant function, the igniting of this detonation just action (moment t
35-) be the device of copying the foregoing description.
In addition, in the example of Fig. 8, shown in Fig. 8 (h), the moment t before the compression stroke of cylinder begins
40During starting, the action of under following state, lighting a fire:
At first, at moment t
41According to above-mentioned discriminant function F(t
3) detect and set the reference position;
At moment t
41-t
44, according to above-mentioned moment t
32-t
34The time the 2nd cylinder the similar state of action in the 2nd cylinder, produce spark because it is a spark in exhaust stroke, so be invalid spark (referring to Fig. 8 (k));
Then, at moment t
45, in the 1st cylinder, produce spark by above-mentioned igniting preservative treatment, make it to become first detonation associated state (referring to Fig. 8 (j)) with internal-combustion engine.
Like this, the moment t of internal-combustion engine before the compression stroke of the 2nd cylinder begins in the embodiment of Fig. 8
40During starting, cause the first detonation with the synchronous waveform of waveform shaping signal NSiG, and the moment t before the compression stroke of the 1st cylinder begins
30Then cause detonation just during starting by computing output control.
And the example among Fig. 9 is different therewith, it is arranged on the igniting benchmark B# 1 of the 1st cylinder the trailing edge (front end) of particular point pulse respectively, and the igniting benchmark B# 2 of the 2nd cylinder is arranged on the trailing edge (front end) of the last pulse of particular point pulse, this moment shown in Fig. 9 (d), the moment t of internal-combustion engine before the 1st compression stroke cylinder begins
50During starting, the action of under following state, lighting a fire:
At first, at moment t
51, according to above-mentioned discriminant function F(t
3) detect and set the reference position;
Again according to the output of the igniting shown in Fig. 6 control processing, at moment t
52Beginning in the 2nd cylinder (its corresponding spark coil of correctly saying so), switch on (referring to Fig. 9 (g));
Then, at moment t
53Arrive the igniting benchmark of the 2nd cylinder, but carve the threshold value revolution Nstp that engine speed (speed) Ne does not reach the stepping advance angle at this moment, thus withdraw from igniting output control processing (referring to Fig. 9 (e) with (g));
So, with the synchronous moment t of a back rising edge of a pulse
54Go up by above-mentioned igniting preservative treatment, cut off, cause t constantly to the power supply of the 2nd cylinder
54First detonation (see Fig. 9 (g) with (d)).
Under this occasion, except only carrying out the reference position checks the igniting action (moment t after its detonation just with an above-mentioned discriminant function
55-) copy the device of the foregoing description basically.
On the other hand, in the example of Fig. 9, shown in Fig. 9 (h), the moment t before the compression stroke of the 2nd cylinder begins
60During starting, the action of then under following state, lighting a fire:
At first, at moment t
61, according to above-mentioned discriminant function F(t
3) and set the reference position;
At moment t
62-t
64In, according to above-mentioned moment t
52-t
54In the operating state of the 2nd cylinder in the 2nd cylinder, produce spark, but it is the spark in exhaust stroke, so be invalid spark (referring to Fig. 9 (k));
At this moment, at moment t
63, begin energising (referring to Fig. 9 (j)) in the 1st cylinder according to the output of the igniting shown in Fig. 6 control processing;
Yet, at moment t
65Though reached the igniting benchmark of the 1st cylinder, this moment, engine speed (speed) Ne did not reach the threshold value revolution Nstp of stepping advance angle, by exporting control processing to time T SPK with identical igniting shown in Figure 6
61Carry out computing, and insert operation time TSPK regularly (referring to Fig. 8 (i) with (j));
So, the moment t behind the process timing
66Make the outage of the 1st cylinder, cause t constantly
66First detonation (see Fig. 9 (k) with (h)).
In such Fig. 9 example, the moment t of internal-combustion engine before the compression stroke of the 1st cylinder begins
50Starting be to cause detonation just, the moment t before the 2nd compression stroke cylinder begins with the synchronous waveform of waveform shaping signal NSiG
60The occasion of starting then becomes the state that causes detonation just with computing output control.
From with the igniting action contrast of in the past device can recognize that device of the present invention can obtain following many excellent effect:
(1) at the 1st cylinder 11(#1) compression stroke begin before the occasion of cranking internal combustion engine (, utilize discriminant function F(t with reference to Fig. 7 (d)-(g)
2), F(t
3) carry out the back igniting output (IG that the position detects
1) be normal spark, the startability that arrives detonation just is 180 °+α of crank shaft angle, has obtained improving significantly.In Fig. 8 and 9 in the illustrated device in the past, the crank shaft angle of the startability from starting to detonation just is 450 °+α, basic not improvement, and, the occasion of in the short like this time, starting, its first detonation position is the trailing edge and the rising edge that can utilize waveform shaping signal NSiG, i.e. the position (rear end of a back pulse of particular point pulse) that the front end of sensor output and rear end pulse realize the stepping advance angle.
(2) in addition, at the 2nd cylinder 12(#2) compression stroke make the occasion (seeing Fig. 7 (h)-(k)) of engine starting before beginning, use discriminant function F(t
1), F(t
3) carry out the back igniting output (IG that the position detects
1) become invalid spark, thereby obtain normal spark and the startability that arrives detonation just is 630 °+α of crank shaft angle, suitable with in the past device.Yet in this occasion, it just becomes the front end that can utilize sensor output and rear end pulse and the position (also is the rear end of a back pulse of particular point pulse in this occasion) of realizing the stepping advance angle in detonation position.
(3) in addition, detect and set two the different discriminant functions in reference position.Owing to be the output control of just lighting a fire when satisfying the condition that obtains according to these discriminant functions at the same time, with regard to not taking place since during starting rotation speed change cause the wrong IGNITION CONTROL that the rapid rising of rotating speed causes with compression ignite.Certainly, after detonation just, also can guarantee at ordinary times correct firing time.
Above-mentioned phenomenons such as recoil can not take place, and obtain stable firing characteristic therefrom.
And then, in device of the present invention, in order to detect and set the 1st reference position, the discriminant function F(t shown in (2) formula above can using
2), and the discriminant function F(t shown in use top (1) formula as shown in Figure 4
1) also can similarly detect and set this 1st reference position.
So, in fact also can obtain and above-mentioned same effect in this kind occasion.
Especially detecting and setting the discriminant function that the 1st reference position is used, so long as from waveform shaping signal NSiG(angle information) the rear end of above-mentioned particular point pulse detect just, also can adopt these discriminant functions F(t
1) and F(t
2) in addition function arbitrarily.
Equally, as detecting and set the discriminant function used the 2nd reference position also so long as from waveform shaping signal NSiG(angle information) the rear end of a back pulse of above-mentioned particular point pulse detect getting final product of obtaining, be not limited to above-mentioned discriminant function F(t
3), and can be with other function arbitrarily.
In addition, in device of the present invention, fire signal generating apparatus (microcomputer 32) be set in respectively the above-mentioned the 1st and the 1st and the 2nd reference position setting device of the 2nd reference position on all additional:
(a) beginning is to the energising starting apparatus of spark coil energising,
(b) power breaker that spark coil is cut off the power supply,
(c) calculating arrives the time of outage and it is carried out the operation control device that timing is inserted,
(d) the igniting protective equipment of pressure outage,
(e) check the reference position testing fixture that the 1st and the 2nd reference position set is whether suitable,
(f) be judged as the protective gear of removing its setting when negating in these reference positions.
, as the fire signal generating apparatus, the above-mentioned the 1st and the 2nd reference position setting device to be arranged at least.During engine starting,, and can send according to the 2nd reference position of above-mentioned setting the signal of starting point fire coil outage is got final product as long as its fire signal can send the signal of beginning to spark coil energising according to the 1st reference position of above-mentioned setting.
Since be in this wise with the corresponding generation in the 1st and the 2nd reference position output of directly lighting a fire, thereby the starting conditions that produces normal spark at least in a cylinder earlier just naturally and understandably can contract the quick-fried needed time of first detonation that arrives internal-combustion engine.
Yet, because the fire signal generating apparatus is to constitute like this, promptly cause the angle of detonation just, be on the rear end of a back pulse of particular point pulse preferably in above-mentioned the 2nd reference position, thereby when engine starting, can realize need not the stable stepping advance angle of above-mentioned computing output control etc., thereby can obtain the stable firing characteristic of phenomenons such as can not recoiling.
In addition; owing to have above-mentioned (a)-(d) device in the lump; even produce under the situation of invalid spark earlier at starting conditions because of internal-combustion engine; also can accomplish the angle that arrives detonation just is limited on the rear end of a pulse behind the special firing pulse by means of normal spark thereafter, promptly also can satisfy the condition that realizes stable stepping advance angle in this case well.
Thereby, as the ignition mechanism of invention, as long as these (a)-(d) device is attached on the above-mentioned the 1st and the 2nd reference position setting device and formation in the lump.
Aforesaid device of the present invention also is provided with above-mentioned (e) reference position testing fixture and above-mentioned (f) protective gear, then after the detonation just, just can guarantee the correct firing time when usual as mentioned above.
In the device of the foregoing description, though be the situation of using ignition mechanism of the present invention for convenience in demonstration on 90 ° of bent axle igniting internal combustion engines of V-type twin-tub, ignition mechanism of the present invention similarly is applicable to 60 ° of bent axle igniting internal combustion engines of V-type twin-tub etc.
After all, as long as with respect to I. C. engine crankshaft rotor rotationally synchronously, with and constitute between cylinder of internal combustion engine the upper dead center bent axle at interval angle same at interval (being 60 ° of intervals for example) for 60 ° of bent axle igniting internal combustion engines of V-type twin-tub above-mentioned a plurality of body that is detected be set get final product.
And in this occasion, said following condition also is constant:
These of being detected in the body constitute particular point pulse form adult;
Sensing device (sensor 22) and its a plurality of bodies that are detected, when a steam-cylinder piston of internal-combustion engine in uphill process and near the piston of another cylinder when being in the upper dead center, sensing device therewith the special burst organizator be configured to relative position relation.Based on such condition, the fire signal generating apparatus is if adopt said structure, no matter which kind of double cylinder IC engine can both obtain effect same as described above to.
As described above, the present invention can inerrably detect two reference positions relevant with the corner of double cylinder IC engine, the i.e. rear end of a back pulse of the rear end of particular point pulse and particular point pulse according to two kinds of discriminant functions.
In addition,, when engine starting, directly begin to switch on and cut off the power supply, just naturally and understandably can shorten the first required time of detonation of internal-combustion engine that arrives to spark coil according to this two reference position by means of the present invention.
By means of the present invention, can be limited to the initiation angle of this detonation just on the rear end of a back pulse of particular point pulse, thereby can when engine starting, realize need not the stable stepping advance angle of computing output control etc., and then the stable firing characteristic of phenomenon such as do not recoil.
Claims (5)
1, a kind of ignition device for two-cylinder internal combusion engine, it is provided with: with the synchronous rotor that rotates of the bent axle of double cylinder IC engine; Therewith rotor corresponding with and constitute upper dead center bent axle a plurality of bodies that are detected of being provided with at interval of angle same at interval between the cylinder of internal-combustion engine; Detect the sensing device that passes through state and export the angle information that constitutes by pulse sequence that these are detected body; And generate the fire signal generating apparatus that is added on fire signal on the ignition coil for internal combustion engine according to the angle information of this output, it is characterized in that:
Above-mentioned a plurality of body that is detected includes with all variform, the particular point pulse form adult forming the particular point pulse in the pulse sequence that above-mentioned sensing device is exported that other is detected body;
Above-mentioned sensing device and above-mentioned a plurality of body that is detected, when the piston of a cylinder of internal-combustion engine is in the uphill process, and the piston of another cylinder is configured to relative position relation to sensing device and above-mentioned particular point pulse form adult near upper dead center the time;
Above-mentioned fire signal generating apparatus is provided with:
The 1st reference position setting device, it detects the rear end of above-mentioned particular point pulse from above-mentioned angle information, and sets the 1st reference position according to the 1st discriminant function, and
The 2nd reference position setting device, it detects the rear end of a back pulse of above-mentioned particular point pulse from above-mentioned angle information, and sets the 2nd reference position according to the 2nd discriminant function;
This ignition mechanism generates when engine starting according to above-mentioned the 1st reference position that sets and begins to the energising of above-mentioned spark coil and make the signal of above-mentioned starting point fire coil outage according to above-mentioned the 2nd reference position that sets.
2, the ignition device for two-cylinder internal combusion engine described in claim 1 is characterized in that: the igniting benchmark that the front end of a back pulse of above-mentioned particular point pulse front end and particular point pulse is decided to be each cylinder of internal-combustion engine respectively;
Above-mentioned fire signal generating apparatus also is provided with:
The energising starting apparatus, it detects the front end of each pulse at every turn from above-mentioned angle information, under corresponding to the condition of the last pulse of the pulse of above-mentioned igniting benchmark beginning to above-mentioned spark coil energising,
Power breaker detects the front end of each pulse at every turn from angle information, internal-combustion engine rotational speed greater than set rotating speed and condition corresponding to the pulse of above-mentioned igniting benchmark under, make above-mentioned spark coil outage,
Operation control device, it is being decided to be above-mentioned special firing pulse front end in the cylinder of the benchmark of lighting a fire, each front end that from angle information, detects each pulse, rotating speed with internal-combustion engine is a condition less than above-mentioned set speed and corresponding to above-mentioned igniting reference pulse, calculate time of arriving outage and it is done regularly to insert, and
The igniting protective equipment is switched on as if above-mentioned spark coil in the 2nd reference position of above-mentioned setting, then makes it to force outage.
3, the ignition device for two-cylinder internal combusion engine described in claim 1 or 2 is characterized in that: above-mentioned fire signal generating apparatus also is provided with:
The reference position testing fixture, it all checks the 1st and the 2nd the whether suitable of reference position of above-mentioned setting according to the above-mentioned the 1st and the 2nd discriminant function respectively whenever the rear end that detects each pulse from above-mentioned angle information,
Protective gear, it is removed the setting of the 1st and the 2nd reference position, and resets the above-mentioned the 1st and the 2nd reference position setting device when being judged to be not by this reference position testing fixture to a certain side in these the 1st and the 2nd reference positions.
4, the ignition device for two-cylinder internal combusion engine described in claim 1 or 2 or 3, wherein, above-mentioned the 1st reference position setting device is when the pulsewidth of representing with Twi as the existing pulse in the pulse sequence of above-mentioned angle information, with Tw
I-1When representing the pulsewidth of its last pulse, right as above-mentioned the 1st discriminant function
F（t
1）＝Tw
i/Tw
i-1
Carry out computing, with its gained result's functional value F(t
1) set above-mentioned the 1st reference position greater than constant K 1 for condition;
Above-mentioned the 2nd reference position setting device is when with Tw
iRepresent the pulsewidth of existing pulse in the pulse sequence, with Tw
I-1Represent the pulsewidth of its last pulse, with Tw
I-2When representing the pulsewidth of preceding 2 pulses,, right as above-mentioned the 2nd discriminant function
F（t
3）＝（Tw
i-1）＾2/（Tw
i-2×Tw
i）
Wherein: " ^ " represents power
Carry out computing, with gained result function value F(t
3) set above-mentioned the 2nd reference position greater than constant K 3 for condition.
5, the ignition device for two-cylinder internal combusion engine described in claim 1 or 2 or 3, wherein, above-mentioned the 1st reference position setting device is with Tw
iRepresentative is as the pulsewidth of existing pulse in the pulse sequence of above-mentioned angle information, with Tp
I-1When representing the interpulse period of this pulse pulse last, as above-mentioned the 1st discriminant function and right with it
F（t
2）＝Tp
i-1/Tw
i
Carry out computing, at its result function value of gained F(t
2) less than constant k
2Condition under set above-mentioned the 1st reference position,
Above-mentioned the 2nd reference position setting device is with Tw
iRepresent the pulsewidth of existing pulse in this pulse sequence, with Tw
I-1Represent the pulsewidth of its last pulse, with Tw
I-2When representing the pulsewidth of preceding 2 pulses, as above-mentioned the 2nd discriminant function and right
F（t
3）＝（Tw
i-1）＾2/（Tw
i-2×Tw
i）
In the formula: " ^ " represents power
Carry out computing, and at gained result function value F(t
3) greater than setting above-mentioned the 2nd reference position under the condition of constant K 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46152/94 | 1994-03-16 | ||
| JP04615294A JP3443922B2 (en) | 1994-03-16 | 1994-03-16 | Ignition device for two-cylinder internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1112987A true CN1112987A (en) | 1995-12-06 |
| CN1038704C CN1038704C (en) | 1998-06-10 |
Family
ID=12739019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95102271A Expired - Fee Related CN1038704C (en) | 1994-03-16 | 1995-03-02 | Ignition device for double-cylinder internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3443922B2 (en) |
| CN (1) | CN1038704C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320270C (en) * | 2004-12-23 | 2007-06-06 | 重庆宗申技术开发研究有限公司 | V-double cylinder magnetic motor and igniting system using it |
| CN109519289A (en) * | 2017-09-20 | 2019-03-26 | 株式会社三国 | Abnormal signal decision maker and method and computer-readable medium |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5577088B2 (en) * | 2009-12-22 | 2014-08-20 | 川崎重工業株式会社 | Engine control apparatus and control method |
| JP5659995B2 (en) * | 2011-10-06 | 2015-01-28 | 株式会社デンソー | Electronic control unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2508725B2 (en) * | 1987-06-12 | 1996-06-19 | 日本電装株式会社 | Rotational reference angular position detector for internal combustion engine |
| US5050554A (en) * | 1989-04-26 | 1991-09-24 | Nippondenso Co., Ltd. | Ignition timing control apparatus for engines |
| US5000148A (en) * | 1990-04-16 | 1991-03-19 | Kokusan Denki Company, Ltd. | System and method for controlling ignition of internal combustion engine for vehicle |
-
1994
- 1994-03-16 JP JP04615294A patent/JP3443922B2/en not_active Expired - Fee Related
-
1995
- 1995-03-02 CN CN95102271A patent/CN1038704C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320270C (en) * | 2004-12-23 | 2007-06-06 | 重庆宗申技术开发研究有限公司 | V-double cylinder magnetic motor and igniting system using it |
| CN109519289A (en) * | 2017-09-20 | 2019-03-26 | 株式会社三国 | Abnormal signal decision maker and method and computer-readable medium |
| CN109519289B (en) * | 2017-09-20 | 2022-08-12 | 株式会社三国 | Signal abnormality determination device and method, and computer-readable medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07259711A (en) | 1995-10-09 |
| CN1038704C (en) | 1998-06-10 |
| JP3443922B2 (en) | 2003-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1298984C (en) | Apparatus for controlling engine rotary stop through estimating kinetic energy and stopping position | |
| CN100338348C (en) | Knocking determination apparatus for internal combustion engine | |
| CN1523226A (en) | Knocking index value calculation device and calculation method thereof | |
| CN1252385C (en) | Method and device for controlling ignition timing of ignition device for internal combustion engine | |
| CN1878951A (en) | Ignition timing controlling device and method | |
| CN1745244A (en) | The control gear of internal-combustion engine | |
| CN1912370A (en) | Device for controlling engine rotation stop by estimating kinetic energy and stop position | |
| CN1779226A (en) | Ignition timing control system for internal combustion engine | |
| CN1657767A (en) | Ignition timing control for internal combustion engine | |
| CN1298983C (en) | Controller of internal combustion engine | |
| CN1834434A (en) | Control apparatus of direct injection internal combustion engine | |
| CN1657766A (en) | Ignition timing control device for internal combustion engine | |
| CN100335768C (en) | Engine control device | |
| CN1543539A (en) | Engine controller | |
| CN101076661A (en) | Fuel injection control device for internal combustion engine | |
| CN1497156A (en) | Power take-off, mixed power take-off and its control method and mixed power vehicle | |
| CN1678824A (en) | Start control system for internal combustion engine | |
| CN1492134A (en) | Constructive device for IC engine combustion state | |
| CN1796754A (en) | Misfire detection system for internal combustion engine | |
| CN1543535A (en) | Improved engine management | |
| CN1637255A (en) | Engine controller | |
| CN101033706A (en) | Vehicle control method and vehicle control device | |
| CN101036091A (en) | Plant control device | |
| CN1180398A (en) | Cylinder judging device for internal combustion engine | |
| CN1934344A (en) | Internal combustion engine air/fuel ratio controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19980610 Termination date: 20130302 |