CN101469656B - Ignition control device for engine and vehicle equipped with it - Google Patents
Ignition control device for engine and vehicle equipped with it Download PDFInfo
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- CN101469656B CN101469656B CN 200910005440 CN200910005440A CN101469656B CN 101469656 B CN101469656 B CN 101469656B CN 200910005440 CN200910005440 CN 200910005440 CN 200910005440 A CN200910005440 A CN 200910005440A CN 101469656 B CN101469656 B CN 101469656B
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Abstract
The invention provides an engine ignition control device and a vehicle provided with the ignition control device; wherein the engine ignition control device is provided with an ignition device, an advance angle device for advancing the ignition time angle of the ignition device, a rotation period detector used for detecting the rotation period of the engine, a load detector used for detecting the load of the engine and a controller for executing advance angle inhibit control of angular advance of the advance angle device based on the rotation period and the load of the engine.
Description
The application is that denomination of invention is dividing an application of " ignition control device of motor and have the vehicle of this ignition control device ", application number are 200510135640.4, the applying date is on December 27th, 2005 application for a patent for invention.
Technical field
The present invention relates to the ignition control device of motor and have the vehicle of this ignition control device.
Background technique
All the time, well-known is that in the internal-combustion engine (being designated hereinafter simply as motor) of so-called volume type, if lighted a fire before piston reaches compression top center, then under situations such as engine speed is lower, motor might reverse.The counter-rotating of this motor is because explosive power acts on the piston that moves to compression top center, promptly it is pushed back to produce before piston reaches compression top center.
Therefore, proposed to utilize the IGNITION CONTROL of motor to prevent the technological scheme of above-mentioned counter-rotating.For example, disclosed control in the following patent document 1 and 2, based on engine speed with reverse between exist relatedly, when engine speed is equal to or less than desired speed, forbid igniting.
Patent document 1: the spy opens clear 60-187766 communique
Patent document 2: the spy opens the 2002-70711 communique
Above-mentioned control of the prior art is based on the control of following principle of experience: when being equal to or less than desired speed, reverse easily.But the inventor has carried out various researchs, found that the rotating speed that counter-rotating takes place cannot treat different things as the same, and is also different along with the load of motor.That is, the inventor finds, the minimum speed of counter-rotating takes place, along with engine loading becomes big and raises, on the contrary, along with load diminishes and reduces.
But, in the past, be used to prevent the engine speed as benchmark of reversing, be irrelevant and set with the size of load without exception and together.Therefore, in order reliably to prevent counter-rotating,, also be set greatlyyer as the rotating speed of benchmark even load is bigger.So, when load hour, even be the high rotating speed that can not cause counter-rotating originally, sometimes also can forcibly forbid ignition device.That is, in control in the past, sometimes can unnecessarily force to stop working.
Summary of the invention
The present invention proposes just in view of the above problems, and its purpose is to prevent engine inversion, and avoids unnecessary pressure to stop working.
The ignition control device of the motor that the present invention relates to, has the ignition mechanism of lighting a fire at the crank position of prespecified range, described prespecified range comprises the crank position that is in before the compression top center, wherein, has: the rotation period detector that detects the rotation period of described motor; Detect the load sensor of the load of described motor; And controller, it is carried out the igniting of forbidding described ignition device and forbids control according to the rotation period and the load of described motor.
According to above-mentioned ignition control device, forbid control owing to simultaneously carry out igniting according to the rotation period of motor and load, so, when load causes counter-rotating more greatly and easily, can adopt less rotation period (that is, high rotational speed) as benchmark, forbid igniting.On the other hand, less and be difficult for causing and when counter-rotating can adopt bigger rotation period (that is, lower rotating speed) in load as benchmark, forbid igniting.Therefore, can avoid unnecessary pressure to stop working.So, adopt above-mentioned ignition control device, can corresponding load and carry out igniting and forbid control.
As mentioned above,, can prevent engine inversion, and can avoid unnecessary pressure to stop working according to the present invention.
Description of drawings
Fig. 1 is two-wheeled side view.
Fig. 2 is the structural drawing of motor and sensor class.
Fig. 3 is the block diagram of control system.
Fig. 4 (a) is the explanatory drawing of crank angle sensor, (b) is the oscillogram of crank angle signal.
Fig. 5 (a) is the oscillogram of crank angle signal, (b) is the state change map of suction press, (c) is the figure of expression stroke state.
Fig. 6 is the block diagram that sucks air quantity calculating portion.
Fig. 7 is the block diagram of fuel injection amount calculating part and fuel variance model.
Fig. 8 is that counter-rotating prevents the flow chart controlled.
Fig. 9 is the flow chart that the rotation period threshold calculations is handled.
Figure 10 is the plotted curve of the relation of expression crank angle and suction press.
Figure 11 is when counter-rotating expression and the plotted curve of the relation of suction press and rotation period when just changeing.
Figure 12 is the plotted curve of the expression crank angle and the relation in engine rotation cycle.
Figure 13 is the plotted curve of the relation of when counter-rotating expression and suction press when just changeing and rotation period.
Figure 14 is the flow chart that IGNITION CONTROL is handled.
Figure 15 is the flow chart of igniting judgment processing.
Figure 16 is the flow chart that igniting forbids recovering judgment processing.
Figure 17 is the plotted curve of the relation of when counter-rotating expression and engine speed when just changeing and suction press.
Figure 18 is the structural drawing of motor and sensor class.
Figure 19 is the plotted curve of the relation of expression crank angle and throttle position.
Figure 20 is expression crank angle and the plotted curve that sucks the relation of air quantity.
Figure 21 is the time diagram of the relation of expression spark coil first side voltage and suction press, (a) is spark coil first side voltage, (b) the expression suction press.
Figure 22 is the flow chart that igniting forbids recovering the variation of judgment processing.
Figure 23 is the flow chart that igniting forbids removing processing.
Figure 24 is the figure that is used to illustrate the arithmetic expression of the correction factor relevant with engine loading.
Symbol description
1 two-wheeled (vehicle), 6 suction valves, 8ECU, 10 suction tude, 12 motors, 13 cylinders, 42 spargers, 43 spark plugs, 44 temperature cylinder sensors, 45 intake air temperature sensor, 46 bent axles, 47 spark coils, 48 Air flow meter (flow transducer), 49 engine load sensors (aperture detector), 50 intake manifold pressure sensors (pressure transducer), 51 crank angle sensors (crank position detector)
Embodiment
Below, describe embodiments of the present invention with reference to the accompanying drawings in detail.
As shown in Figure 1, the vehicle that relates to of present embodiment is two-wheeled 1.But it is two-wheeled that the vehicle that the present invention relates to is not limited to.In addition, said here " two-wheeled " also comprises scooter etc. except moped.
Two-wheeled 1 comprises: have body frame 3, front fork 4 and postbrachium 19 vehicle body 2, be supported on front-wheel 5 on the front fork 4, be supported on the trailing wheel 21 on the postbrachium 9 and be supported on motor 12 on the body frame 3.And two-wheeled 1 comprises: be used for the water cooling plant 16 of cooled engine 12 and be used to control the control unit of engine (below be called ECU) 8 of motor 12.Above the rear portion of body frame 3, seat 11 is set.In addition, label 22 is a baffler, and label 23 is the back damper unit.
As shown in Figure 2, in the cylinder 13 of engine main body 14, placed piston 31.One end of connecting rod 30 is connected on the piston 31, and the other end of connecting rod 30 is connected on the crank 27 in the crank box 28.Suction port 17 and relief opening 18 are formed at the top at cylinder 13, and suction tude 10 is connected on the suction port 17, and outlet pipe 15 is connected on the relief opening 18.On suction port 17, be provided with suction valve 6, on relief opening 18, be provided with outlet valve 7.In addition, the label among Fig. 2 35,36 represents to suck air and exhausting air respectively.Above the piston 31 in cylinder 13, be divided into firing chamber 32.Spark plug 43 is set on firing chamber 32, and spark plug 43 is connected on the spark coil 47.
In the inside of suction tude 10, be provided with corresponding accelerator open degree and adjust the closure 33 of aperture.Upstream side at the closure 33 of suction tude 10 is equipped with sparger 42.Be connected with fuel pipe 38 on sparger 42, fuel pipe 38 is connected in the fuel tank 39.Fuel pipe 38 is provided with petrolift 41.In addition, in Fig. 2,, petrolift 41 can certainly be arranged on the inside of fuel tank 39 though illustrate the situation that petrolift 41 is arranged on fuel tank 39 outsides.
Then, various sensors are described.In motor 12, be provided with crank angle sensor 51, temperature cylinder sensor 44, intake manifold pressure sensor 50 and intake air temperature sensor 45.Crank angle sensor 51 is that the rotation angle that is used to detect bent axle 46 is the sensor of crank position (crank phase).Temperature cylinder sensor 44 is sensors of the temperature of detection of engine main body 14.Here, temperature cylinder sensor 44 is made of temperature transducer, and this temperature transducer is used to detect the temperature of the cooling water that motor 13 is cooled off.In addition, temperature cylinder sensor 44 also can be the temperature transducer that detects the temperature of cylinder 13 itself.Intake manifold pressure sensor 50 is sensors of the internal pressure (suction press) that is used to detect suction tude 10.Intake air temperature sensor 45 is that the inside temperature that is used to detect suction tude 10 is the sensor of intake temperature.
Shown in Fig. 4 (a), ACM rotor 20 is installed on bent axle 46.In the periphery of ACM rotor 20, the predetermined interval of being separated by is provided with a plurality of (being 11 in the present embodiment) reluctor 60～70.At this, reluctor 60 and reluctor 70 be spaced apart 60 °, other reluctor each other be spaced apart 30 °.Near the periphery of ACM rotor 20, as crank angle sensor configuration pulser coil 51.If bent axle 46 rotations, then each reluctor 60～70 is by near the pulser coil 51, and the flux of pulser coil 51 changes.Thus, generate such pulse signal shown in Fig. 4 (b) as crank angle signal.In the present embodiment, detect crank position based on these pulse signals.In addition, based on interval (for example, the time lag between the rising edge of the pulse) T of these pulse signals, the instantaneous rotation period of detection of engine 12, calculation engine rotating speed.
As illustrated in fig. 2, crank angle sensor 51, temperature cylinder sensor 44, intake manifold pressure sensor 50 and intake air temperature sensor 45 are connected with ECU8.ECU8, from crank angle sensor 51, temperature cylinder sensor 44, intake manifold pressure sensor 50 and intake air temperature sensor 45, receive crank angle signal, cooling water temperature signal, suction press signal and intake air temperature signals respectively, control signal is outputed to petrolift 41, sparger 42 and spark coil 47 etc.
Fig. 3 is the block diagram by the constructed control system 100 of ECU8.This control system 100 possesses: engine speed calculating part 101, crank be detection unit 102 and suction air quantity calculating portion 103 regularly.
Engine speed calculating part 101 receives crank angle signal and the calculation engine rotating speed is exported the information relevant with engine speed.The inverse of engine speed is the engine rotation cycle.Therefore, engine speed calculating part 101, also the rotation period detector as the rotation period of detection of engine plays a role.
Crank is detection unit 102 regularly, receives suction press signal and crank angle signal, detects stroke state.Then, crank is detection unit 102 regularly, and information that will be relevant with stroke state is exported as the crank timing information.
At this, with reference to Fig. 5 (a)～(c) to by crank regularly the detecting method of detection unit 102 stroke state of carrying out describe.Fig. 5 (a) is the oscillogram of crank angle signal, and numbering " 0 "～" 10 " are respectively the pulses of reluctor 60～70.Fig. 5 (b), (c) represent suction press, stroke state etc. respectively.
In four-circulation motor, in the cycle period that air inlet, compression, expansion and exhaust constituted, bent axle 46 rotates twice.Therefore, only, aspirating stroke and expansion stroke can not be differentiated, in addition, compression stroke and exhaust stroke can not be differentiated by detecting crank position.On the other hand, by Fig. 5 (b) as can be known, suction press is different in aspirating stroke and expansion stroke, and is in addition, different in compression stroke and exhaust stroke.Therefore, by with crank position and suction press combination, can detect stroke state.
For example, shown in Fig. 5 (a), when detecting the 4th pulse signal, only, can not distinguish compression stroke or exhaust stroke by this pulse signal.But in exhaust stroke, because outlet valve 7 is opened and suction valve 6 cuts out, so suction press uprises.On the other hand, at the initial stage of compression stroke, because suction valve 6 is opened (perhaps, even suction valve 6 cuts out the influence of the aspirating stroke before also being subjected to), suction press step-down.Therefore, by taking into account tracheal pressure, can distinguish compression stroke and exhaust stroke and detect.
Suck air quantity calculating portion 103, receive the crank timing informations from crank timing detection unit 102, and then, receive intake air temperature signals and suction press signal, calculate and suck air quantity.It is relevant with engine loading to suck air quantity, therefore can be by sucking the load of air quantity detection of engine.Therefore, sucking air quantity calculating portion 103 also plays a role as the load sensor of detection of engine load.
As shown in Figure 6, suck air quantity calculating portion 103, possess: suction press detection unit 201, mass flow rate map memory section 202 and intake temperature detection unit 204.Suction press detection unit 201 detects suction press at predetermined crank position.Mass flow rate map memory section 202, storage detect the map of the mass flow rate that sucks air based on suction press.In the present embodiment, in mass flow rate map memory section 202, the suction press when intake temperature is 20 ° and the relation of mass flow rate are made map.
Suck air quantity calculating portion 103, also possess mass flow calculation portion 203 and mass flow rate correction portion 205.Mass flow calculation portion 203, the mass flow rate map of employing mass flow rate map memory section 202 is calculated and the detected corresponding mass flow rate of suction press.In addition, above-mentioned mass flow rate map, the mass flow rate during based on predetermined temperature (being 20 ° in the present embodiment) makes.Therefore, when the intake temperature of reality and above-mentioned predetermined temperature depart from, there is deviation sometimes between actual mass flow rate and the mass flow rate of being calculated.At this, mass flow rate correction portion 205, from the information of intake temperature detection unit 204 reception intake temperature, the mass flow rate that will be calculated in mass flow calculation portion 203 is revised based on detected intake temperature.
In the present embodiment, when the calculating that sucks air quantity, utilize lower dead center from compression stroke to suction press value with suction valve 6 closed period.That is, when opening suction valve 6, owing to the pressure in suction press and the cylinder is equal to substantially, so as long as know suction press, cylinder internal volume and intake temperature, just can the interior air quality of determining cylinder.But because suction valve 6 is not opened after the beginning of compression stroke for a long time, air might be come in and gone out in cylinder and between the suction tude 10 betwixt.Therefore, if ask the suction air quantity by the suction press before the lower dead center, then this suction air quantity might be different with the actual air quantity that is drawn in the cylinder.At this, in the present embodiment, adopt suction valve in 6 operating periods, particularly the suction press of compression stroke calculates the suction air quantity.In addition, in order further to improve calculation accuracy, also can consider the influence of burnt gas dividing potential drop, adopt relevant therewith engine speed, that implements to try to achieve by experiment revises accordingly with engine speed.
As shown in Figure 3, control system 100 also possesses: fuel injection amount configuration part 104 and injection pulse carry-out part 105.Fuel injection amount and fuel injection time based on engine speed and suction air quantity, are set in fuel injection amount configuration part 104.Injection pulse carry-out part 105 receives the crank timing informations from crank timing detection unit 102, exports to sparger 42: with fuel injection amount that sets by fuel injection amount configuration part 104 and the corresponding injection pulse of fuel injection time.
Fuel injection amount configuration part 104 possesses: target air-fuel ratio calculating part 108, fuel injection amount calculating part 109 and fuel variance model 110.Target air-fuel ratio calculating part 108 calculates target air-fuel ratio based on engine speed and suction press.Fuel injection amount calculating part 109, based target air fuel ratio and suction air quantity, computing fuel emitted dose and fuel injection time.Fuel variance model 110 is carried out utilization when fuel injection amount calculating part 109 computing fuel emitted doses and fuel injection time.Fuel variance model 110 also is used for configuration part 106 firing time described later.Therefore, in Fig. 3, with fuel variance model 110 and fuel injection amount calculating part 109 for the ease of understanding diagram separately.But, in fact, fuel variance model 110 and fuel injection amount calculating part 109 one.In addition, in fuel variance model 110, utilize above-mentioned engine speed, intake air temperature signals and cooling water temperature signal.
Fuel injection amount calculating part 109 and fuel variance model 110 for example, constitute as the block diagram of Fig. 7.At this, establishing the fuel injection amount that sprays in suction tude 10 from sparger 42 is M
F-INJ, the fuel deposition rate that wherein is attached to the inwall of suction tude 10 is X, then fuel injection amount is M
F-INJAmong the amount of flowing directly into that is directly injected in the cylinder be ((1-X) * M
F-INJ), the adhesion amount that is attached to suction tude 10 inwalls is (X * M
F-INJ).In this deposited fuel some flow in the cylinder along the inwall of suction tude 10.Its residual volume is made as fuel residual volume M
F-BUF, establish the ratio taken away because of inlet stream in this residual volume for taking away rate τ, then be pulled away and the amount that flows in the cylinder is (τ * M
F-BUF).
At this, in this fuel injection amount calculating part 109, at first, adopt cooling water temperature correction factor table, by cooling water temperature T
WCalculate coolant water temperature correction factor K
WOn the other hand, to above-mentioned suction air quantity M
A-MAN, be 0 o'clock for example at throttle opening, carry out the fuel cut-off routine of fuel shutoff, then, adopt intake air temperature T
AThe revised air influx of temperature M is carried out in calculating
A, with itself and target air-fuel ratio AF
0Reciprocal multiplication, be multiplied by coolant water temperature correction factor K again
W, calculate and require fuel influx M
FIn addition, adopt fuel deposition rate map, by engine speed N
EAnd suction press P
A-MAN, obtain fuel deposition rate X.In addition, utilize and take away the rate map, by engine speed N
EAnd suction press P
A-MAN, calculate and take away rate τ.Then, the fuel residual volume M that is obtained by to the last time computing time
F-BUF, be multiplied by and take away rate τ, the computing fuel amount of taking away M
F-TAThen, by from requiring fuel influx M
FDeduct the fuel amount of taking away M
F-TA, the computing fuel amount of flowing directly into M
F-DIRAs previously mentioned, this fuel amount of flowing directly into M
F-DIRBe fuel injection amount M
F-INJ(1-X) doubly.At this, make the fuel amount of flowing directly into M
F-DIRDivided by (1-X), computing fuel emitted dose M
F-INJIn addition, at the fuel residual volume M in the suction tude 10 of remaining in till last time
F-BUFAmong, these remnants ((1-τ) * M
F-BUF), it is added fuel deposition amount (X * M
F-INJ), as this fuel residual volume M
F-BUF
As shown in Figure 3, control system 100 also possesses: firing time configuration part 106 and firing pulse carry-out part 107.Firing time, the configuration part 106, carried out decision that setting, the decision forbidden of igniting and the advance angle of firing time forbid etc., output firing time or igniting prohibition information.Firing time, configuration part 106 was also as carrying out that igniting is forbidden controlling and advance angle is forbidden the controller performance function controlled.Firing pulse carry-out part 107, from crank regularly detection unit 102 read the crank timing information, will with the corresponding firing pulses such as firing time that configuration part 106 sets by firing time, to spark coil 47 outputs.
Then, to firing time configuration part 106 concrete condition describe.Firing time, the configuration part 106, possessed: basic ignition Time Calculation portion 111, with the common fuel variance model 110 in fuel injection amount configuration part 104, cylinder in air fuel ratio calculating part (in Fig. 3, being expressed as A/F calculating part in the cylinder) 112, firing time correction portion 113, counter-rotating judging part 114, igniting forbid removing judging part 115, igniting and forbid/advance angle forbid processing division 116 and igniting forbid/advance angle forbids judging part 117.
Basic ignition Time Calculation portion 111, the target air-fuel ratio that engine speed of being calculated based on engine speed calculating part 101 and target air-fuel ratio calculating part 108 are calculated is calculated the basic ignition time.Particularly, basic ignition Time Calculation portion 111 by current engine speed and target air-fuel ratio, by the map retrieval etc., obtains and produces torque and become maximum firing time, with it as the basic ignition time.
Air fuel ratio calculating part 112 in the cylinder, based on the fuel influx of being calculated by fuel variance model 110 that in cylinder, flows into (equating) with by sucking the suction air quantity that air quantity calculating portion 103 is calculated, calculate air fuel ratio in the cylinder with requiring the fuel influx.Particularly, air fuel ratio calculating part 112 in the cylinder with suck the suction air quantity calculated in the air quantity calculating portion 103 divided by the cylinder fuel influx of being calculated in fuel variance model 110, calculates air fuel ratio in the cylinder.
Firing time, correction portion 113, based on: by crank regularly air fuel ratio and basic ignition time of being calculated in the detected crank timing information of detection unit 102, the cylinder of being calculated by air fuel ratio calculating part 112 in the cylinder, revise firing time by basic ignition Time Calculation portion 111.Particularly, firing time, correction portion 113, when air fuel ratio and target air-fuel ratio have a great difference in the cylinder in the initial stage of compression stroke, adopted air fuel ratio, engine speed and suction press in this cylinder, according to the expectant control map, set new firing time.
Igniting forbids/advance angle forbids judging part 117, (in addition, because engine speed is the inverse in engine rotation cycle, therefore also can replace engine speed with the engine rotation cycle based on engine speed.Below same.), crank timing information and suck air quantity, judge whether to cause engine inversion.Igniting forbids/advance angle forbids processing division 116, and in the time might causing engine inversion, forbids lighting a fire or forbids advance angle more than or equal to prearranging quatity.In addition, igniting forbid/advance angle forbids processing division 116, output igniting prohibition information.Counter-rotating judging part 114 based on suction press signal, engine speed, crank timing information and igniting prohibition information, judges whether motor reverses.Counter-rotating judging part 114 also plays a role as reverse rotation detector.Igniting forbids removing judging part 115, receives the counter-rotating information and the above-mentioned igniting prohibition information of self reversal judging part 114, judge whether to remove igniting and forbid, to igniting forbid/advance angle forbids that processing division 116 output igniting forbid releasing information.Forbid removing judging part 115, igniting by these counter-rotating judging parts 114, igniting to forbid/advance angle forbid processing division 116 and igniting forbid/advance angle forbids judging part 117, carry out following counter-rotating and prevent control.
Then, with reference to Fig. 8, the counter-rotating of present embodiment is prevented that control from describing.In addition, it is the part of engine ignition control that this counter-rotating prevents to control, and counter-rotating shown in Figure 8 prevents control routine, based on the signal from crank angle sensor 51, to each predetermined crank position or each scheduled time, carries out.In this control, at first, in step S1,, detect the rotation period of each predetermined crank position based on crank angle signal from crank angle sensor 51.Then, carry out step S2, obtain suction press at predetermined crank position, based on this suction press, the counter-rotating that calculating is used to light a fire forbids controlling, advance angle forbids controlling etc. prevents the threshold value of the rotation period controlled.In addition, control is forbidden in so-called igniting, be to be used to prevent the counter-rotating of motor and the control forbidding lighting a fire, so-called advance angle is forbidden control, though be to allow engine ignition, forbid the control of lighting a fire than the further angular advance of predetermined crank position (this position is not limited to compression top center).In step S3, relatively in step S1 resulting rotation period and in step S2 the size of resulting threshold value, carry out IGNITION CONTROL based on its magnitude relationship and handle.
Then, with reference to Fig. 9 the rotation period threshold calculations processing of above-mentioned steps S2 is described.In this processing, at first, in step S11, judge whether current crank position is positioned at predetermined crank position CRK1.Then,, then carry out step S12, obtain the information (being suction press in the present embodiment) of engine loading if current crank position is positioned at predetermined crank position CRK1.On the other hand, if current crank position is not positioned at predetermined crank position CRK1, then finishes this rotation period threshold calculations and handle.Like this, predetermined crank position CRK1 sets the timing that is used for the detection of engine load.Therefore, predetermined crank position CRK1 so long as be suitable for carries out the position that engine loading detects and gets final product, and is not defined as certain location.
As mentioned above, in the present embodiment, based on the load of suction press detection of engine.For according to the load of suction press detection of engine, preferred as predetermined crank position CRK1, the high position of coherence of selection suction press and engine loading.At this, for example, when 1 cycle period, suction press changed as shown in Figure 10, position P1 that can little suction press (vacuum pressure is big) was set at predetermined crank position CRK1 as suction press and the high position of engine loading coherence.In addition, the crank angle of the transverse axis of Figure 10 (Figure 12 described later, 19,20 too) is that reference position (crank angle=0 °) is represented with the compression top center.In the present embodiment, above-mentioned position P1 only sets one, also can set above-mentioned position P1 a plurality of.A plurality of by above-mentioned position P1 is set, can calculate and suck the integral value, differential value of the high suction press of air quantity coherence etc., adopt these value detection of engine loads.
After detecting engine loading, carry out the step S13 of Fig. 9, calculate the threshold value NTA of the rotation period of the threshold value NT of rotation period of the benchmark of forbidding as igniting and the benchmark forbidden as advance angle.Then, threshold value NT and NTA are described.
The plotted curve of Figure 11 is illustrated in and does not carry out lighting a fire when forbidding controlling, i.e. the laboratory data when fixing crank position is lighted a fire always.The transverse axis of this plotted curve is represented the suction press Pm of predetermined crank position CRK1 (for example position P1 of Figure 10), i.e. engine loading.The longitudinal axis of this plotted curve is represented the rotation period T of predetermined crank position.In the present embodiment, as shown in figure 12, with near the compression top center (for example, from compression top center preceding 40 ° to the compression top center) crank position CRK2 as above-mentioned predetermined crank position.Near the compression top center, also rotation period long period (in other words being lower period of rotating ratio) in the middle of 1 circulation of motor, with the coherence height of the generation of reversing.
The plotted curve of this Figure 11, expression when just changeing and during counter-rotating rotation period and the dependency relation of engine loading.According to Figure 11 as can be known, when engine loading is big more (when suction press Pm is big more), even short rotation period also easily causes counter-rotating.
In the present embodiment, the threshold value NT of the rotation period of the benchmark of forbidding as igniting is set in the minimum rotation cycle of engine inversion and maximum rotation that motor is just changeing between the cycle.With the relevant data of this threshold value NT, promptly relevant data with the combination of rotation period that causes reversing and suction press, for example being stored in advance igniting forbids/advance angle forbids in the judging part 117.These data both can be the data of trying to achieve by experiment, also can be the data that theoretical property derives.In addition, above-mentioned predetermined crank position CRK2 is not limited near the compression top center.So long as can distinguish the state that rotates and reverse clearly, the crank position of the judgement practicality that can think two condition, also can make predetermined crank position CRK2 is abundant forward position between the compression top center.
Become the threshold value NTA of the rotation period of the benchmark that advance angle forbids, being set at may be because of angular advance cause the reversing rotation period of the minimum that takes place.With the relevant data of this threshold value NTA, promptly with the relevant data of combination of rotation period that causes because of advance angle reversing and suction press, also being stored in advance for example igniting forbids/advance angle forbids judging part 117.These data are same, both can be based on the resulting data of experiment, also can be the data that theoretical property derives.At this, the predetermined crank position CRK3 when setting this threshold value NTA is set in the forward position (with reference to Figure 12) of crank position CRK2 when setting igniting and forbid the threshold value NT of usefulness.Threshold value NTA is conceived to the rotation period T of above-mentioned predetermined crank position CRK3 and sets, and the result considers the minimum rotation cycle of engine inversion and the maximum rotation cycle of just changeing, as being set because of advance angle causes the rotation period of the minimum of reversing.
Figure 13 is the plotted curve that is used for illustrating the setting example of threshold value NTA.Set in the example at this, above-mentioned crank position CRK3 is positioned at the preceding 30 ° position than above-mentioned crank position CRK2.The engine speed of crank position CRK3 is higher relatively than the engine speed of crank position CRK2, and therefore, threshold value NTA (with reference to block curve) is set at the value littler than threshold value NT.
In above-mentioned setting example, based on suction press Pm shown in Figure 13 and the correlogram of rotation period T, supposition may cause the rotation period that reverses, setting threshold NTA thus because of advance angle.But the establishing method of threshold value NTA is not limited to carry out based on supposition, also can carry out based on laboratory data.For example, determine predefined full aduance position, carry out the igniting of this advance angle position under various conditions, detection has or not counter-rotating at this moment.Then, can be based on this testing result, setting threshold NTA (with reference to the dashed curve NTA of Figure 13).
In addition, in step S13 when calculated threshold NT and NTA, also can prepare to be set with the table of the value that satisfies Figure 11 and each curve shown in Figure 13, adopt this table to carry out interpolative operation.Perhaps, in advance with threshold value NT and NTA as the function mathematical expressionization of engine loading (being suction press in the present embodiment), calculate based on these functions.Concrete computational methods about threshold value NT and NTA are not done any qualification.
Next, with reference to Figure 14 the IGNITION CONTROL processing of step S3 (with reference to Fig. 8) is described.In IGNITION CONTROL was handled, at first, in step S21, whether confirming lights a fire at current time was forbidden handling.As a result, forbid carrying out the igniting of step S22 and forbidding recovering judgment processing when middle being in igniting, then in step S23, judge whether to proceed this igniting and forbid.When being necessary that proceeding igniting forbids handling, finish this routine in the judged result of step S23.On the other hand, in step S21, be judged as not to be to be in and light a fire when forbidding in the processing, enter step S24.In addition, in step S23, be judged as and also enter step S24 when igniting is forbidden recovering.In step S24, light a fire have or not, the igniting judgment processing of the setting of firing time etc.
With reference to Figure 15 the concrete condition of the igniting judgment processing of step S24 is described.In this processing, at first, in step S31, judge whether current crank position is in the zone of forbidding judging that allows to light a fire.That is, in the present embodiment, in order to judge with the high position of coherence of counter-rotating and to improve the judgement precision, perhaps save unnecessary computing and improve the efficient etc. of processing, the judgement that igniting is forbidden is set in predetermined crank position scope and carries out.But, also can not limit judge allowing the zone, light a fire in zone arbitrarily and forbid judging.At this moment, can omit step S31.
In step S31, be in igniting and forbid judge allowing then entering into step S32 in the zone if be judged as current crank position.On the other hand, being judged as current crank position when not being in igniting and forbidding judge allowing in the zone, enter into step S33.
In step S32, relatively: detect rotation period T obtained in handling and the size of obtained threshold value NT in the rotation period threshold calculations of step S2 is handled at the rotation period of step S1 (with reference to Fig. 8).If rotation period T, then is judged as the possibility height of engine inversion more than or equal to threshold value NT, carry out the igniting of step S37 and forbid handling, finish this routine.On the other hand, during less than threshold value NT, enter step S33 at rotation period T.
In step S33, judge whether current crank position is in to allow to carry out in the zone that advance angle forbids judging.In addition, this step S33 also can omit equally with step S31.In step S33, be judged as current crank position when being in advance angle and forbidding judge allowing in the zone, enter step S34.On the other hand,, enter step S35, carry out the normal ignition processing, finish this routine being judged as current crank position when not being in advance angle and forbidding judge allowing in the zone.
In step S34, relatively: detect rotation period T obtained in handling and the size of obtained threshold value NTA in the rotation period threshold calculations of step S2 is handled at the rotation period of step S1.If rotation period T, then is judged as the possibility height that causes engine inversion because of advance angle control more than or equal to threshold value NTA, carry out step S36.In step S36, carry out: forbid advance angle control, light a fire in the fixed position that the nonreversible predetermined benchmark crank position of motor is lighted a fire and handle.But, be set at, when lighting a fire, light a fire in the position of this retardation angle side in the position of the retardation angle side of this benchmark crank position.When in step S34, being judged as rotation period T, carrying out advance angle control and also do not have the possibility that produces counter-rotating, enter into step S35 and carry out normal ignition and handle even be judged as less than threshold value NTA.
In this wise, in the present embodiment, at rotation period during less than predetermined the 1st threshold value, the crank position of the prespecified range that the 1st predetermined crank position before compression top center is later allows igniting, at rotation period more than or equal to above-mentioned the 1st threshold value and less than the time than big predetermined the 2nd threshold value of above-mentioned the 1st threshold value, the crank position of the prespecified range that the 2nd predetermined crank position behind above-mentioned the 1st crank position is later allows igniting, during greater than above-mentioned the 2nd threshold value, forbids igniting at rotation period.
Next, with reference to Figure 16 the igniting of step S22 (with reference to Figure 14) is forbidden that the concrete condition of recovering judgment processing describes.In addition, this processing is also carried out when engine inversion, and therefore, crank position shown below is the discernible crank position of ECU8, may be different with the crank position of reality.
In this processing, at first, in step S41, judge that malleation detects sign F
BFWhether be 1.This malleation detects sign F
BFIt is the sign whether the expression motor reverses.When engine inversion, because the exhaust in the firing chamber 32 is to suction tude 10 reverse inflows, so suction press is depicted as than normal high value.For example, under normal situation, suction press is smaller or equal to barometric pressure, but when engine inversion, suction press surpasses barometric pressure sometimes.At this, in the present embodiment,, make malleation detect sign F if suction press is more than or equal to predetermined threshold value (this threshold value is not limited to barometric pressure in addition) in 1 circulation of motor
BFBe 1, counter-rotating has taken place in the expression motor.
Detect sign F in malleation
BF=1 o'clock, carry out step S46, judge whether motor stops.Then, when motor stops, in step S47, removing igniting and forbid, finish this routine.On the other hand, when motor does not stop, forbidding, therefore directly finish this routine owing to be unsuitable for removing igniting.Like this, in the present embodiment, when detecting the generation counter-rotating, till stopping, forbidding by motor igniting.
In step S41, detect sign F in malleation
BFBe not 1 o'clock, enter step S42, detect current crank position and whether be arranged in predetermined crank position zone (be expressed as malleation at Figure 16 and detect the crank position zone).At this, will be scheduled to the crank position zone, be set at the crank position zone that is easy to according to the counter-rotating of suction press detection of engine.That is, be set at the crank position zone that the counter-rotating of motor and the coherence of suction press are high.In the judged result of step S42 is that current crank position is when being positioned at above-mentioned crank position zone, carry out step S43, in the time of in not being in above-mentioned crank position zone, improve judgement precision or omission unnecessary processing for fear of the low judgement of precision and improve whole treatment effeciency etc., directly finish this routine.
In step S43, judge engine inversion by said method.That is, judge that whether current suction press is more than or equal to predetermined threshold value., be judged as motor counter-rotating has taken place during at current suction press, carry out step S45 and make malleation detect sign F more than or equal to above-mentioned threshold value
BFBe 1.Then, till motor stops, proceeding igniting and forbid (with reference to step S46, S47).
On the other hand, in step S43, during less than above-mentioned threshold value, carry out step S44, judge whether current crank position is that the igniting of being scheduled to recovers crank position at current suction press.In addition, so-called igniting recovers crank position, even be to recover igniting also can not cause the crank position that reverses, for example is the predetermined crank position after leaning on than the compression top dead center.At this, igniting recovers crank position, is the position after leaning on than the crank position that the counter-rotating judgement finishes, and is the forward position of crank position of preparing than the igniting that can carry out next time.Recover crank position by such setting igniting, can guarantee to forbid handling the adequate time allowance that becomes till the state that can carry out again ignition process from lighting a fire.In step S44, be above-mentioned igniting when recovering crank position at current crank position, in step S47, remove igniting and forbids, finish this routine.On the other hand, not above-mentioned igniting when recovering crank position at current crank position, directly finish this routine.
In addition, above-mentioned step S1, S2, S21, S31～S34, by igniting forbid/advance angle forbids that judging part 117 carries out.Step S35～S37, S47, by igniting forbid/advance angle forbids that processing division 116 carries out.Step S23, S41, S44, S46 forbid removing judging part 115 by igniting and carry out.Step S42, S43, S45 are undertaken by counter-rotating judging part 114.
As mentioned above, according to present embodiment, owing to be not based on the rotation period of motor, light a fire and forbid control and be based on rotation period and suction press both sides, so when being difficult to cause counter-rotating, can be that benchmark is forbidden igniting with bigger rotation period (in other words being lower engine speed), when being easy to cause counter-rotating, can be that benchmark is forbidden igniting with less rotation period (in other words being higher engine speed).
For example, as shown in figure 17, then forbidding under the situation of igniting smaller or equal to predetermined rotational speed N s, even the original state C that can not reverse (with reference to enclosing in vain), the igniting that also can be under an embargo (forcing flame-out).With respect to this, according to present embodiment, owing to the rotating speed that becomes benchmark changes corresponding to suction press, so the pressure can avoid state C the time is flame-out.Therefore, can avoid unnecessary pressure to stop working, can carry out the higher igniting of degree of accuracy and forbid control.In addition, similarly, can avoid unnecessary advance angle to forbid, can carry out the higher advance angle of degree of accuracy and forbid control.
In the present embodiment, preestablish the threshold value NT and the NTA that may cause the rotation period that reverses, will be in the running of motor 12 detected rotation period and these threshold values NT and NTA compare, and judge forbidding of igniting or advance angle.Therefore, can be by fairly simple formation, carry out above-mentioned igniting and forbid that control and advance angle forbid control.
In addition, in the present embodiment, according to the relation that is associated between suction press and the suction air quantity, based on the load of suction press detection of engine.Therefore,, there is no need to be provided with in addition new sensor and be used for the detection of engine load for the motor 12 that possesses intake manifold pressure sensor 50, can be simply and detection of engine load at low cost.
In addition, in the present embodiment, if after forbidding igniting, the counter-rotating of detection of engine 12 then makes motor 12 stop to remove igniting afterwards and forbids.Therefore, can not cause the releasing of forbidding along with igniting and bring out counter-rotating, increase big burden can not for motor 12.
And then, in the present embodiment, after forbidding igniting, when nonreversible and suction press is less than predetermined value at motor 12, removes igniting and forbids.Therefore, under the situation that can not cause reversing, can recover from the igniting illegal state immediately, can avoid unnecessary pressure to stop working.
In addition, in the present embodiment, will become the rotation period that the benchmark controlled is forbidden in igniting, being set near the rotation period of the crank position the compression top center.Therefore, can improve the judgement precision of counter-rotating, can realize the higher igniting of reliability forbid control.
In the above-described embodiment, detect engine loading based on suction press.But, also can be based on this engine loadings of detection such as other parameters relevant with this load.For example, as illustrated in fig. 18, also can be provided with: detect the engine load sensor 49 or the direct Air flow meter 48 that sucks air quantity that detects of the aperture (hereinafter referred to as throttle opening) of closure 33, based on throttle opening or the load of suction air quantity detection of engine.
Based on the load of throttle opening detection of engine the time, preferably with the high crank position of throttle opening coherence be benchmark.In other words, preferred, be benchmark with the crank position high with sucking the air quantity coherence.For example, preferred, as shown in figure 19,, be set in above-mentioned predetermined crank position CRK1: in 1 circulation of motor, the position P2 in the crank position in the precalculated position that suction valve 6 is opened such with the high position of suction air quantity coherence.In addition, also can set a plurality of position P2, the integral value of the throttle opening that calculating is high with sucking the air quantity coherence, differential value etc. adopt these value detection of engine loads.
When directly detecting the suction air quantity by Air flow meter 48, as illustrated in fig. 20, preferably:, be set in above-mentioned predetermined crank position CRK1: the position P3 in the crank position in the precalculated position that suction valve 6 is opened such with suck the high position of air quantity coherence.In addition, also can set a plurality of position P3 this moment, the integral value of the suction air quantity that calculating is high with sucking the air quantity coherence, differential value etc. adopt these value detection of engine loads.
In addition, in the above-described embodiment, when whether the combination of judging rotation period and engine loading is the combination that causes reversing, detect rotation period, judge (with reference to Fig. 8) based on this rotation period.That is, whether judge rotation period, forbid igniting or advance angle based on this judged result more than or equal to predetermined threshold.But, also can the engine loading threshold value be set to each rotation period, whether judge engine loading more than or equal to this threshold value, forbid igniting or advance angle based on this judged result.
Forbid recovering (with reference to Figure 16) in the judgment processing in the igniting of above-mentioned mode of execution, being judged as current crank position in step S44 is to light a fire when recovering crank position, carries out step S47, directly removes igniting and forbids.But, also can remove igniting and forbid at the crank position (in other words, become igniting recovery crank position from crank position and begin) that recovers than igniting after crank position leans on through after the scheduled period.
According to the difference of the kind of ignition mechanism, also consider sometimes aspect the relation of hardware formation etc., directly to remove igniting and forbids then causing the unsettled situation of ignition operation.But, as mentioned above,, then can make the ignition operation of removing after igniting is forbidden stable if set time is poor till forbidding removing to igniting.
For example, shown in Figure 21 (a), exist sometimes: spark coil first side voltage, forbid beginning not being returned to the situation of predetermined reference value from igniting to through the scheduled time (stabilization time).If with the crank angle is that benchmark considers that the phase difference of then corresponding with this stabilization time crank angle changes because of engine speed, general engine speed is high more then big more.But, for example,, can guarantee to have sufficient phase difference B from spark coil first side voltage is stable by till igniting is forbidden removing, phase difference A being set through beginning from the malleation surveyed area, can make the ignition operation after igniting is forbidden removing stable.
Also can carry out igniting shown in Figure 22 and forbid recovering judgment processing, replace igniting shown in Figure 16 to forbid recovering judgment processing.In the processing of Figure 22,, carry out step S44 when in step S42, being judged as current crank position not when malleation detects in the crank position zone (malleation surveyed area).In step S44, be when lighting a fire the recovery crank position, to carry out step S48 when being judged as current crank position, judge that the malleation detection judges whether to finish.When the judged result of step S48 is "Yes", think that spark coil first side voltage is stable, and carry out step S47, remove igniting and forbid.On the other hand, when the judged result of step S48 is "No", directly finish this routine.
But, for example,, be applied in the power that motor 12 is just being changeed sometimes from the outside two-wheeled 1 when on downward-sloping slope, travelling etc.At this moment, can think, even temporarily produced counter-rotating before compression top center, also can motor 12 just changeed by being subjected to the power from the outside thereafter, continue just changes with maintaining the original state.But at this moment, suction press may take place sometimes less than predetermined threshold value (with reference to the step S43 of Figure 16), even actual moment produces counter-rotating, can not detect the problem of this counter-rotating.Therefore, detecting in the device of crank position based on crank pulse, existing sometimes: crank pulse when just changeing and the crank pulse when reversing mix, and the situation of misidentification crank position.
On the other hand, forbid recovering existing among the step S43 of judgment processing (with reference to Figure 16) in igniting: suction press is removed the situation that igniting is forbidden during less than threshold value subsequently.Therefore, might remove igniting based on the crank position of mistake forbids.At this, preferred, before igniting is forbidden removing, revise the operation of reseting that detects error.
For example, also can carry out igniting shown in Figure 23 forbids removing the igniting of handling step of replacing S47 and forbids removing.Forbid removing in the processing in this igniting, at first in step S51, judge whether to detect the pulse of pre-determined number.When the judged result of step S51 is "Yes", carry out step S52, judged whether to detect predetermined benchmark crank position.In addition, the crank position of benchmark for example can be set at the reluctor 60 of Fig. 4 and the position between the reluctor 70 etc.Then, when the judged result of step S52 is "Yes", detected benchmark crank position as new reference position (reseting operation), is carried out the detection of crank position once more.In addition, owing to can hold correct crank position,, remove igniting and forbid so carry out step S53.In addition, when the judged result of step S51 and S52 is "No", directly finish this routine.
In the above-described embodiment, engine loading is not limited to the load of motor itself, also can comprise external loading.In addition, also can be corresponding to external loading correction rotation period threshold value NT, NTA.For example, as external loading, can consider load of electrical generation, the loss load during from the load of drive system and cold machine.At this moment, also the correction factor (electrical load correction factor) that load of electrical generation produced can be made as K1, in the future the correction factor that load produced (driving system loads correction factor) of self-driven system is made as K2, the correction factor (machine temperature correction factor) that loss load during with cold machine is produced is made as K3, and threshold value NT or NTA are multiplied by these correction factors K1～K3.
As the parameter relevant with load of electrical generation, for example, can consider: the opening/close or load (duty) opening/closing of Generation Control conducting/disconnection, Headlamps (H/L) than the opening/close of the conducting/disconnection of the conducting/disconnection of, handle heater, direction finder, Stop Lamp, loudspeaker.As with from the relevant parameter of the load of drive system, for example also can consider clutch conducting/disconnection, the gradient, gear.As illustrated in fig. 24, also can be in advance with these parametric functionizations, pictorialization or mapization, these parameters are multiplied each other mutually or addition etc., calculate each correction factor K1～K3 thus.In addition, during the calculating of the loss load when cold machine, also can adopt oil temperature, water temperature to wait the dessert machine actuator temperature.
As discussed above, the present invention is applicable to the ignition control device of motor and possesses its vehicle.
Claims (2)
1. the ignition control device of a motor, its have ignition mechanism and make described ignition mechanism firing time angular advance the advance angle device, the ignition control device of this motor has:
Be used to detect the rotation period detector of the rotation period of described motor;
Be used to detect the load sensor of the load of described motor; And
Controller, it is according to the rotation period and the load of described motor, and the advance angle of the angular advance that the described advance angle device of carrying out that no thoroughfare is carried out is forbidden control,
Wherein, described controller, store the data relevant with the combination of rotation period that causes engine inversion and load, according to described data judge by the detected rotation period of described rotation period detector with by the detected load of described load sensor, whether meet the condition of the combination of the rotation period that causes engine inversion and load, when meeting, forbid the angular advance that described advance angle device is carried out.
2. vehicle, it has the ignition control device of motor as claimed in claim 1.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004376781 | 2004-12-27 | ||
| JP376781/2004 | 2004-12-27 | ||
| JP2005043374A JP4553749B2 (en) | 2004-12-27 | 2005-02-21 | Engine ignition control device and vehicle equipped with the same |
| JP043374/2005 | 2005-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510135640 Division CN100540884C (en) | 2004-12-27 | 2005-12-27 | The ignition control device of motor and have the vehicle of this ignition control device |
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| CN101469656A CN101469656A (en) | 2009-07-01 |
| CN101469656B true CN101469656B (en) | 2011-10-19 |
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| CN 200510135640 Active CN100540884C (en) | 2004-12-27 | 2005-12-27 | The ignition control device of motor and have the vehicle of this ignition control device |
| CN 200910005440 Active CN101469656B (en) | 2004-12-27 | 2005-12-27 | Ignition control device for engine and vehicle equipped with it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101666281B (en) * | 2008-09-04 | 2011-04-27 | 光阳工业股份有限公司 | Anti-reversal method of fuel injecting engine |
| CN112714824A (en) * | 2018-09-21 | 2021-04-27 | 本田技研工业株式会社 | Engine starting device for vehicle |
| CN110578609B (en) * | 2019-09-23 | 2022-03-08 | 辽宁壮龙无人机科技有限公司 | Method and device for regulating and controlling engine ignition and readable storage medium |
| CN111287875B (en) * | 2020-02-25 | 2021-08-03 | 江门市大长江集团有限公司 | Engine reverse ignition suppression method and device, computer equipment and storage medium |
| CN111608815B (en) * | 2020-04-14 | 2022-11-08 | 联合汽车电子有限公司 | Engine misfire control method, system and readable storage medium |
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| CN101469656A (en) | 2009-07-01 |
| CN100540884C (en) | 2009-09-16 |
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