CN104564397B - Control apparatus for engine, power unit of saddle-riding type vehicle and saddle-riding type vehicle - Google Patents

Abstract

The invention relates to a control apparatus for an engine, a power unit of a saddle-riding type vehicle and the saddle-riding type vehicle. The saddle-riding type vehicle is composed of following units including a first acquisition unit, a second acquisition unit, a first control unit and a second control unit. The first acquisition unit is used for acquiring a signal outputted from a knocking sensor during the first period of possibility in case of knocking phenomena. The second acquisition unit is used for acquiring a signal outputted from the knocking sensor during a second period, at least one part of the period without noises occur due to mechanical shock of an internal combustion engine and without the first period. The first control unit is used for controlling the internal combustion engine in the mode of inhibiting knocking in case of knocking phenomena by utilizing the signal acquired by the first acquisition unit to determine the occurrences of knocking phenomena. The second control unit is used for utilizing the signal acquired by the second acquisition unit to determine the occurrences of external noises caused by the external condition of the saddle-riding type vehicle and utilizing the determination result to change control of the first control unit over the internal combustion engine.

Description

The control device of internal combustion engine, the power unit of Straddle-type vehicle and Straddle-type vehicle

Technical field

The present invention relates to the power unit and Straddle-type vehicle of the control device of internal combustion engine, Straddle-type vehicle.

Background technology

The operating condition that detection internal combustion engine is covered with cover in motorcycle or automatic tricycle is proposed in patent documentation 1 Sensor and protect the sensor against the impact of gravelstone etc..

Citation

Patent documentation

Patent documentation 1：No. 3790770 publications of Japanese Patent No.

The content of the invention

Invent problem to be solved

Currently, the present inventor's investigation monitors the generation of the pinking of internal combustion engine in Straddle-type vehicle, and to avoid Pinking it is multiple and control internal combustion engine pinking countermeasure control application.

As the composition of the generation for being used to monitor pinking, following composition can be discussed：Detection internal combustion engine is carried on vehicle Vibrations detonation sensor, and based on detonation sensor output judge pinking generation.

However, in Straddle-type vehicle, when travelling on bad road, because gravelstone etc. is collided outside internal combustion engine or crankcase etc. Portion's situation, there is a possibility that to bring impact to the output of detonation sensor.Think in the case where gravelstone etc. has been collided, due to The impact has been mixed into extraneous noise in the output of detonation sensor, it is difficult to correctly judge the generation of pinking.

Even if the not direct collision detonation sensor such as gravelstone, if transmitting the position of vibrations by gravelstone etc. to detonation sensor Collision, can also occur the impact of the collision to detonation sensor of gravelstone etc..Therefore, as Patent Document 1, if simply with cover The composition of detonation sensor is covered, the impact caused by the collision of gravelstone etc. will not disappear.

Even if it is an object of the invention to provide causing in pinking sensing in the collision due to gravelstone etc. in Straddle-type vehicle Also can carry out well in the case of extraneous noise has been mixed in the output of device the internal combustion engine of the reply of pinking control device, The power unit and Straddle-type vehicle of Straddle-type vehicle.

Means for solving the problem

The control device of the internal combustion engine that one mode of the present invention is related to is equipped in Straddle-type vehicle from detection The control device of the internal combustion engine of the detonation sensor input detection signal of the vibrations of combustion engine, adopts and possesses with the composition of lower unit： First acquisition unit, the first acquisition unit is interior during a cycle of the internal combustion engine, exist pinking generation can The first period of energy property is taken into the signal from detonation sensor output；Second acquisition unit, the second acquisition unit exists It is interior during a cycle of the internal combustion engine, the second phase be taken into from the detonation sensor output signal, described second Period be the generation for removing the noise that first period and removal are caused by the mechanical shock of the internal combustion engine during during At least a portion；First control unit, first control unit is sentenced based on the signal being taken into by the first acquisition unit Determine the generation of pinking, the internal combustion engine is controlled in the way of suppression pinking in the case where pinking there occurs；And second control Unit, second control unit is based on the signal determining being taken into by the second acquisition unit by the outer of the Straddle-type vehicle The generation of the extraneous noise that portion's situation causes, and control of first control unit to the internal combustion engine is changed based on result of determination Content processed.

The power unit of the Straddle-type vehicle that one mode of the present invention is related to is adopted to possess and is equipped on Straddle-type vehicle The composition of internal combustion engine, the control device of the detonation sensor and above-mentioned internal combustion engine of the vibrations of the detection internal combustion engine.

The Straddle-type vehicle that one mode of the present invention is related to is configured in vehicle seat seat surface using possessing at least a portion The internal combustion engine of lower section, the composition of the control device of the detonation sensor and above-mentioned internal combustion engine of the vibrations of the detection internal combustion engine.

The effect of invention

According to the present invention, even if being mixed into extraneous noise in the output of detonation sensor by the collision of gravelstone etc. In the case of, it is also possible to the reply of pinking is carried out well.

Description of the drawings

Fig. 1 is the outside drawing of the Straddle-type vehicle for illustrating embodiments of the present invention；

Fig. 2 is the block diagram that the ECU of the Straddle-type vehicle for illustrating embodiments of the present invention and its periphery are constituted；

Fig. 3 is the block diagram of of the pinking characteristic extracting circuit for illustrating Fig. 2；

Fig. 4 is to illustrate the flow chart that the knock determination performed by ECU is processed；

Fig. 5 is to illustrate the figure that knock determination is processed；

Fig. 6 is the flow chart for illustrating the pinking countermeasure control process performed by ECU；

Fig. 7 is the calculation condition table of the calculation process of the step of illustrating Fig. 6 S66；

Fig. 8 is the sequential chart of that illustrates pinking countermeasure control process；

Fig. 9 is the figure that explanation illustrates the detection window during the signal extraction of pinking characteristic extracting circuit；

Figure 10 is the flow chart for illustrating the first bad road noise determination processing performed by ECU；

Figure 11 is the flow chart of the variation for illustrating the first bad road noise determination processing；

Figure 12 is the flow chart for illustrating the second bad road noise determination processing performed by ECU；

Figure 13 is the decision condition table of the final bad road noise determination processing for illustrating to be performed by ECU；

Figure 14 is the figure of the variation for illustrating the detection window during illustrating the signal extraction of pinking characteristic extracting circuit；

Figure 15 is the flow chart for illustrating the bad road noise counter plan control process performed by ECU；

Figure 16 is the sequential chart of that illustrates bad road noise counter plan control process；

Figure 17 is the flow chart of the variation 1 for illustrating bad road noise counter plan control process；

Figure 18 is the flow chart of the variation 2 for illustrating bad road noise counter plan control process；

Figure 19 is the calculation condition table of the pinking countermeasure control process for illustrating embodiment 2；

Figure 20 is the flow chart of the bad road noise counter plan control process for illustrating embodiment 2；

Figure 21 is the calculation condition table of the pinking countermeasure control process for illustrating embodiment 3；

Figure 22 is the flow chart of the bad road noise counter plan control process for illustrating embodiment 3.

Symbol description

1 Straddle-type vehicle

3 front-wheels

4 trailing wheels

5 engine units

7 vehicle seats

10 detonation sensor

20 ECU

21 pinking characteristic extracting circuits

23 microcomputers

30 fuel injection units

40 igniting units

50 EGR valves

51 electromotors

52 power transfering parts

60 crankshaft angle sensors

214 peak holding processing units

231 knock determination value operational parts

232 knock determination portions

233 bad road noise detection units

234 ignition timing operational parts

235 fuel injection operational parts

236 executor's control units

237 window control portions

Specific embodiment

Hereinafter, embodiments of the present invention are described in detail referring to the drawings.

(embodiment 1)

Fig. 1 is the outside drawing for illustrating the Straddle-type vehicle that embodiments of the present invention 1 are related to.Fig. 2 illustrates the present invention The block diagram that the ECU and its periphery that embodiment is related to is constituted.

The Straddle-type vehicle 1 of present embodiment is the vehicle that driver takes across vehicle seat, e.g. automatic two-wheeled cycle. As shown in figure 1, Straddle-type vehicle 1 includes：Front-wheel 3, trailing wheel 4, the electromotor 51 as internal combustion engine, power transfering part 52, ECU (Engine Control Unit：Equivalent to the control device of internal combustion engine) 20, the vehicle seat 7 taken a seat of handlebar 6, rider and quick-fried Shake sensor 10 etc..Also, as shown in Fig. 2 Straddle-type vehicle 1 has crankshaft angle sensor 60, igniting unit 40, fuel injection Unit 30 and EGR (Exhaust Gas Recirculation ERGs) valve 50.

The power unit of embodiments of the present invention is by the list of the key element blocking of the power source for becoming Straddle-type vehicle 1 Electromotor 51 and ECU20 in unit, including the element of above-mentioned Straddle-type vehicle 1.Power unit can be transmitted comprising power Portion 52, electromotor or both.

Electromotor 51 is the singlecylinderengine with single cylinder, is the electromotor of air cooling.Electromotor 51 is heavy successively 4 Stroke Engines of multiple suction stroke, compression travel, fire stroke and instroke.Electromotor 51 has cylinder head, gas Cylinder body, piston, connecting rod and bent axle etc..The cylinder head of electromotor 51 is provided with inlet valve, air bleeding valve and spark plug.

In the cylinder of cylinder block, piston is configured to move back and forth, and piston is connected via connecting rod with bent axle.Air inlet Valve makes the mixed gas of air inlet and fuel in cylinder by the either on or off in suction stroke.Air bleeding valve is by aerofluxuss Stroke either on or off and discharge burning gases.When the inlet valve is closed and during exhaust valve closure, it is referred to as shake of taking a seat Dynamic mechanical shock.By the igniting by spark plug, mixed gas are in gas in-cylinder combustion, thus reciprocating motion of the pistons and bent axle Carry out rotation driving.During the burning of mixed gas extends in the cylinder, there are mixed gas in the neighbouring different of cylinder wall The situation of Chang Qihuo.Because exception vibrations on fire and caused are pinkings.

Electromotor 51 is configured between front-wheel 3 and trailing wheel 4, and the lower section of the seat surface of vehicle seat 7 is configured at least partially. The front portion of electromotor 51 and at least a portion of bottom are configured to be exposed to outside, and in motion direct collision is to extraneous gas.

Power transfering part 52 has variator, drive shaft and accommodates the crankcase of these parts and bent axle.The rotation of bent axle Turn power and be delivered to drive shaft via variator, and trailing wheel 4 is passed to via chain etc. from drive shaft.

The cylinder block of electromotor 51 and the crankcase of power transfering part 52 are integrally connected, by electromotor 51 and power Transfer part 52 constitutes the engine unit 5 being integrated.These there is also situation about not being integrated.

ECU 20 is the control device of the control for being substantially carried out relevant with the burning of electromotor 51.Although after details State, but ECU 20 performs judge whether there occurs that the knock determination of pinking is processed and not multiple in pinking in electromotor 51 Scope realize the pinking countermeasure control process of the efficient burning of electromotor 51.Also, ECU 20 is performed and is judged bad road noise Generation process and in the case where bad road noise there occurs change pinking countermeasure control process control content bad road Noise counter plan control process.

Igniting unit 40 (Fig. 2) includes being configured in the spark plug of cylinder head, and makes fire based on the control signal of ECU 20 Spark plug ignition.

Fuel injection unit 30 (Fig. 2) includes the choke valve of control inhaled air volume and supplies to intake channel injection The fuel injection device of fuel.Fuel injection unit 30 is with the timing based on the control signal of ECU 20 and measures to intake channel spray Penetrate fuel.Sent out by being supplied to the air of intake channel and the mixed gas of fuel mix and being supplied to when INO In the cylinder of motivation 51.

EGR valve 50 (Fig. 2) is that the part for making the cylinder from electromotor 51 be discharged to the burning gases of exhaust channel is followed again Ring to intake channel valve, based on ECU 20 control signal change aperture.Additionally, the control of EGR valve 50 and EGR valve 50 can To omit.

Crankshaft angle sensor 60 (Fig. 2) is the sensor of the anglec of rotation of the bent axle for detecting electromotor 51, defeated to ECU 20 Go out crank angle signal.ECU 20 can be counted based on crank angle signal to the anglec of rotation and engine speed of bent axle.

Detonation sensor 10 (Fig. 2) is that the vibrations of the vibrations occurred in electromotor 51 are detected to judge pinking to occur Detection sensor.Detonation sensor 10 for example has the piezoelectric element for being applied in the oscillatory acceleration produced in electromotor 51, Alternating voltage corresponding with oscillatory acceleration is exported from piezoelectric element as detection signal.Detonation sensor 10 is, for example, in inspection Survey the sensor that gain in the frequency range of object is the flat non-co- vibration shape.Detonation sensor 10 is for example installed in electromotor 51 cylinder block, and covered by sensor wrap 53.The detection signal of detonation sensor 10 is imported into ECU 20.

<The details of ECU 20>

Then, the detailed composition of ECU 20 is illustrated.

As shown in Fig. 2 ECU 20 has pinking characteristic extracting circuit 21, interface circuit 22 and microcomputer 23.It is miniature Computer 23 has knock determination value operational part 231, knock determination portion 232, bad road noise detection unit 233, ignition timing computing Portion 234, fuel injection operational part 235, executor's control unit 236 and window control portion 237.

Among above-mentioned element, decision content operational part 231, knock determination portion 232 and ignition timing operational part are shaken 234 equivalent to by suppress pinking generation judgement and pinking in the way of carry out electromotor 51 control the first control unit. Bad road noise detection unit 233 and ignition timing operational part 234 have both the bad road noise of judgement to be occurred and the generation based on bad road noise Change the function of the second control unit of the control content of electromotor 51.

The each several part of microcomputer 23 both can by the software sharing that performed by CPU (central operation processing meanss), Can also be constituted by hardware such as DSP (digital signal processing circuit).

Pinking characteristic extracting circuit 21 is to extract the signal point for judging pinking from the detection signal of detonation sensor 10 Amount and the circuit for judging the component of signal of the bad road noise with the frequency near pinking.Pinking characteristic extracting circuit 21 exists Extracted above-mentioned component of signal during the signal extraction specified by the timing signal from window control portion 237, and will be extracted Component of signal to knock determination value operational part 231, knock determination portion 232 and bad road noise detection unit 233 are exported.With regard to letter Number extract during it is aftermentioned.

Fig. 3 is the block diagram of that illustrates pinking characteristic extracting circuit 21.

As shown in figure 3, pinking characteristic extracting circuit 21 is main by Gain tuning portion 211, Filtering Processing portion 212, rectification Reason portion 213 and peak holding processing unit 214 are constituted.

The gain of the detection signal of the adjustment of Gain tuning portion 211 detonation sensor 10.The adjustment of gain is, for example, for root The adjustment of the level of the detection signal changed according to engine speed or the individual variation based on detonation sensor 10 and change The adjustment of the level of detection signal and carry out.

Filtering Processing portion 212 for example has bandwidth-limited circuit, makes to include in a large number the frequency component of knock vibration than other Frequency component more passes through from detection signal.

Rectification processing unit 213 carries out rectification to the detection signal of AC wave shape.

Peak holding processing unit 214 keeps and exports signal extraction phase for being specified by the timing signal in window control portion 237 Between in detection signal crest voltage.

The specific composition of pinking characteristic extracting circuit 21 is not limited to the example of Fig. 3, as long as can be in appointed signal The component of signal of knock vibration is contained in a large number from the detection signal extraction of detonation sensor 10 during extraction, and any composition is all Can be with.

The waveform of the output signal of interface circuit 22 (Fig. 2) adjustment crankshaft angle sensor 60 is simultaneously defeated to microcomputer 23 Go out.

Window control portion 237 receives crank angle signal and controls the process timing of each several part from crankshaft angle sensor 60.Tool Body ground, window control portion 237 exports the timing signal during illustrating signal extraction to pinking characteristic extracting circuit 21.Also, window Mouth control unit 237 to knock determination value operational part 231, knock determination portion 232 and the output of bad road noise detection unit 233 are taken into The timing signal of signal.It is aftermentioned with regard to these timings.

Knock determination value operational part 231 and knock determination portion 232 perform knock determination described later and process and carry out pinking Raw judgement.Knock determination portion 232 is by result of determination is to ignition timing operational part 234, fuel injection operational part 235 and holds Row device control unit 236 is notified.

Ignition timing operational part 234 performs pinking countermeasure control process described later and bad road noise counter plan control process and controls Igniting unit processed 40.

Fuel injection operational part 235 performs the pinking countermeasure control process and bad road noise pair illustrated in embodiment 2 Plan control process simultaneously control fuel injection unit 30.With regard to embodiment 1, it is also possible to omit fuel injection operational part 235.

Executor's control unit 236 performs the pinking countermeasure control process and bad road noise counter plan illustrated in embodiment 3 Control process simultaneously control EGR valve 50.With regard to embodiment 1, it is also possible to omit executor's control unit 236.

Bad road noise detection unit 233 performs bad road noise determination processing described later, judges that bad road noise occurs.Bad road noise Detection unit 233 is by result of determination to ignition timing operational part 234, fuel injection operational part 235 and executor's control unit 236 Notify.

<Knock determination process>

Then, the knock determination to being performed by knock determination value operational part 231 and knock determination portion 232 is processed and said It is bright.

Fig. 4 illustrates the flow chart that knock determination is processed.

The predetermined timing that the knock determination of Fig. 4 is processed in a cycle of electromotor 51 is started, according to electromotor 51 Each in cycle repeat to be performed.

When starting knock determination and processing, first, in step S41, knock determination value operational part 231 and knock determination portion 232 timing signals based on window control portion 237 are detected the output level of pinking characteristic extracting circuit 21 as knock vibration Value is obtained.Specifically, the output voltage of pinking characteristic extracting circuit 21 is carried out A/D (simulation numeral) changes by microcomputer 23 Change and obtain the digital value after conversion.The timing for obtaining knock vibration detected value be electromotor 51 a cycle during interior deposit Knock vibration occur probability during (the detection window KW of Fig. 9) just through timing.Knock vibration detected value is to show Go out the signal value extracted during this period by pinking characteristic extracting circuit 21.

In step S42, acquired knock vibration is detected in knock determination value operational part 231 and knock determination portion 232 Value carries out logarithmic transformation to calculate logarithm knock vibration detected value.

In step S43, by logarithm knock vibration detected value, (=threshold value is inclined with knock determination threshold value in knock determination portion 232 Shifting+logarithmic mean value) be compared it is whether big to judge logarithm knock vibration detected value.The process of step S43 is to judge pinking One of process of generation.Logarithmic mean value is the value calculated by knock determination value operational part 231 in step S46. Threshold shift is the value being determined in advance by experiment etc..

Result of the comparison is, if logarithm knock vibration detected value is big, knock determination portion 232 there will be pinking generation Result of determination is maintained at memorizer etc. (step S44).Ignition timing is input to by the result of determination that knock determination portion 232 keeps Operational part 234, fuel injection operational part 235 and executor's control unit 236.

On the other hand, if logarithm knock vibration detected value is little, the judgement that knock determination portion 232 will occur without pinking As a result it is maintained at memorizer etc. (step S45).Ignition timing computing is output to by the result of determination that knock determination portion 232 keeps Portion 234, fuel injection operational part 235 and executor's control unit 236.

The process of step S44 and step S45 due to become be connected on after the determination processing of step S43 be transferred to pinking send out Give birth to the composition of corresponding control process and can omit.

In step S46, knock determination value operational part 231 calculates what is obtained respectively in past multiple engine cycles The meansigma methodss of multiple knock vibration detected values and carried out the logarithmic mean value after Logarithm conversion.Then, terminate once Knock determination process.

Fig. 5 is to illustrate the figure that knock determination is processed.The transverse axis of Fig. 5 represents logarithm knock vibration detected value, and the longitudinal axis was represented The frequency gone in multiple engine cycle.

Knock vibration detected value was described above as from the detection signal of detonation sensor 10 in the phase for being likely to occur pinking Between the signal value that extracts.Therefore, obtain and calculated logarithm knock vibration detected value multiple engine cycles are spread all over In the case of, as shown in the bar diagram of Fig. 5, logarithm knock vibration detected value is distributed in low scope.In addition, when with few frequency During generation pinking, logarithm knock vibration detected value is turned into high value with being distributed to compare.

On the other hand, the tendency of the distribution of logarithm knock vibration detected value less changes, but logarithm knock vibration is detected The absolute value of the scope of Distribution value becomes according to external factor such as the individual deviations of engine speed or detonation sensor 10 Change.

Therefore, in the knock determination of Fig. 4 is processed, according to the knock vibration detected value for spreading all over multiple engine cycles acquisitions Totality calculate logarithmic mean value (step S46), in logarithmic mean value plus threshold shift and determine knock determination threshold value (step S43).Also, in the knock determination of Fig. 4 is processed, can be by knock determination threshold value and logarithm knock vibration detected value Size compare (step S43) and become big knock vibration detected value with generally distribution fiducial value due to pinking to differentiate, and sentence Determine the generation of pinking.

Processed by above-mentioned knock determination, in the case of the abnormal noise such as bad road noise is nonevent, can be high-precision Degree ground judges the generation of pinking.

<Pinking countermeasure control process>

Then, the pinking countermeasure control process to being performed by ignition timing operational part 234 are illustrated.

Fig. 6 is the flow chart for illustrating pinking countermeasure control process.Fig. 7 is the fortune that the calculating of the step of illustrating Fig. 6 S66 is processed Calculation condition table.Fig. 8 is the sequential chart of that illustrates pinking countermeasure control process.

Predetermined timing of the pinking countermeasure control process in a cycle of electromotor 51 is started, according to electromotor 51 Each cycle repeats to be performed.

As shown in figure 8, pinking countermeasure control process are come according to benchmark ignition timing amendment based on the judgement of pinking generation The process of ignition timing.

Specifically, if as shown in figure 8, have determined that out the generation of pinking, make ignition timing only it is delayed it is a certain amount of (below Referred to as " hysteresis during knock determination ").Also, if continue the scheduled period (hereinafter referred to as during the generation for not being determined pinking For " restored cycle C "), then igniting is made with the lead (hereinafter referred to as " during recovery lead ") less than hysteresis during knock determination Period shifts to an earlier date.

So-called benchmark ignition timing refers to the ignition timing of the benchmark of decision such as the rotating speed based on electromotor 51.

When the pinking countermeasure control process of Fig. 6 start, ignition timing operational part 234 judges right in step S61 first Whether the cycle rate counter that engine cycle is counted becomes restored cycle C (end period of C during Fig. 8).

If it is determined that result be affirmative, then ignition timing operational part 234 will be to restore timing to sentence in step S62 Determine result and be maintained at memorizer etc..

Then, the cycle of removing enumerator in step S64 of ignition timing operational part 234.

On the other hand, if the result of determination of step S61 is negative, ignition timing operational part 234 is in step S63 Memorizer etc. will be maintained at for the result of determination for not being recovery timing.

The process of step S62 and step S63 is immediately transferred to and judgement by being set to the then determination processing of step S61 As a result the composition of corresponding control process, and can omit.

Then, ignition timing operational part 234 in step S65 increases cycle rate counter.

In step S66, ignition timing operational part 234 calculates ignition timing and repaiies according to calculation condition table 70 (with reference to Fig. 7) On the occasion of.Calculation condition is maintained at the knock determination result of memorizer etc. and in Fig. 6 according in the process of the knock determination of Fig. 4 The step of S62 or step S63 in whether be maintained at memorizer etc. be to restore the result of determination of timing and be determined.

That is, as shown in (1) hurdle of Fig. 7, if restoring timing and being the judgement of the generation for having pinking, then ignition timing Operational part 234 calculates ignition timing correction value " to shift to an earlier date during hysteresis+recovery during correction value-knock determination before a cycle Amount ".By the calculating, in the cycle for being judged as pinking generation, delayed " hysteresis-recovery during knock determination of ignition timing When lead " (with reference to Fig. 8 cycle C1), be prevented from the multiple of pinking.

As shown in (2) hurdle of Fig. 7, if restore timing and be the generation without pinking judgement, then ignition timing transport It is " lead during correction value+recovery before a cycle " that calculation portion 234 calculates ignition timing correction value.By the calculating, in pinking The cycle not occurred for a long time, ignition timing shifts to an earlier date (cycle C2, C3, C4, C5 of Fig. 8) gradually, can carry out more efficiently send out The burning of motivation 51.

As shown in (3) hurdle of Fig. 7, if not restore timing and be have pinking occur judgement, ignition timing operational part 234 calculate ignition timing correction value for " hysteresis during correction value-knock determination before a cycle ".By the calculating, if sentenced Being set to has pinking, then do not postponed, ignition timing delayed " hysteresis during knock determination ", is prevented from the multiple of pinking (with reference to the cycle N1 of Fig. 8).

As shown in (4) hurdle of Fig. 7, if not restore timing and be the generation without pinking judgement, then ignition timing Operational part 234 is set to ignition timing correction value and the correction value identical value before a cycle, and does not change ignition timing and repair On the occasion of.

If thus, calculating ignition timing correction value, ignition timing operational part 234 is reflecting the timing of correction value Timing signal is exported to igniting unit 40 and make plug ignition.

Process in (step S66) in the calculating of the ignition timing correction value of Fig. 6, in order to avoid ignition timing is more than appropriate Scope, it may be determined that the maximum and minima of ignition timing correction.And it is possible to be controlled so that in ignition timing Correction is set to maximum in the case of having exceeded maximum, and in the case of less than minima minima is set to.

(Fig. 4) and pinking countermeasure control process (Fig. 6) are processed according to above-mentioned knock determination, as shown in figure 8, judging Do not postponed in the case of generation for pinking and ignition timing is delayed, pinking is multiple after being prevented from.Also, do not having In the case of being judged as the generation of pinking, ignition timing is shifted to an earlier date gradually.By these controls, ignition timing is controlled in quick-fried Near shake boundary, the fuel economy and output characteristics of electromotor 51 are enhanced.

<Bad road noise and detection window>

Then, to the bad road noise of output that there is a possibility that to be mixed into detonation sensor 10 and pinking feature extraction electricity Road 21 (Fig. 2) carries out the detection window of signal extraction and illustrates.

In Straddle-type vehicle 1 in the case of the traveling of rubble Dao Denghuai roads, there is slungshot collision electromotor 51 or power is passed The crankcase in portion 52 is passed, the vibrations are passed to detonation sensor 10 and are mixed into so as to become extraneous noise (becoming " bad road noise ") The possibility of the detection output of detonation sensor 10.When bad road noise has the component close with the frequency of knock vibration, pinking Decision content operational part 231 and knock determination portion 232 are possible to the judgement for becoming correctly carry out pinking generation.

For example, in the case of the intensity height of bad road noise, there is knock determination value operational part 231 and knock determination portion 232 probabilities that bad road noise error is judged to pinking.

In addition, in the case where little Huai roads noise has been mixed in a large number, due to the logarithm knock vibration extraction of values in Fig. 5 Big error is produced in distribution, is caused in the knock determination threshold value (Fig. 5) that knock determination value operational part 231 is calculated comprising big Error.When knock determination threshold value is set it is bigger than normal value when, knock determination value operational part 231 and knock determination portion 232 It is difficult to be judged to pinking when smaller pinking there occurs.

Fig. 9 is the figure that explanation illustrates the detection window during the signal extraction of pinking characteristic extracting circuit.Fig. 9 is illustrated and started One of the detection signal waveform of the detonation sensor 10 during a cycle of machine 51 in (- 360 °～360 °).The waveform of Fig. 9 Figure Heng Shaft illustrate that the crankshaft angles ， Zong Shaft that top dead centre is 0 ° illustrate the signal intensity of detection signal.So-called top dead centre is piston The compression top center of the mixed gas in maximum compression cylinder.

In the present embodiment, bad road noise, therefore pinking characteristic extracting circuit are judged together with the vibration signal of pinking 21 (Fig. 2) carry out the extraction of signal in detection window KW, NW1, the NW2 shown in Fig. 9.(Fig. 2) coordinates this in window control portion 237 A little detection window KW, NW1, NW2 output peak holding processing units 214 carry out the timing signal of peak holding process.

Detection window KW is corresponding to the first period with pinking generation.For example, detection window KW is set During terminating 60 ° ± 5 ° of extension from the front of top dead centre for the burning in cylinder.

Detection window NW1 corresponding to not Chong Die with detection window KW, NW2, and with the generation of the mechanical shock of electromotor 51 Period compares vibrations few second phase of electromotor 51.For example, detection window NW1 is set to the vibrations in instroke During occurring less.For example, the phase beyond the period of taking a seat of the air bleeding valve that detection window NW1 can be set in instroke Between.

Between the third phase that detection window NW2 occurs corresponding to the mechanical shock of electromotor 51.For example, detection window NW2 quilts During being set as that the noise of taking a seat of dump valve occurs.

The signal being extracted in detection window KW as previously mentioned for the judgement that pinking occurs, by shake decision content operational part 231 and knock determination portion 232 (Fig. 2) be taken into.Knock determination value operational part 231 and knock determination portion 232 pass through window control portion 237 timing signal carries out being taken into for the signal.

On the other hand, the judgement that the signal being extracted in detection window NW1, NW2 occurs for bad road noise, is made an uproar by bad road Sound detection unit 233 is taken into.Bad road noise detection unit 233 carries out being taken into for the signal by the timing signal in window control portion 237. Bad road noise detection unit 233 performs 2 Zhong Huai roads noise determination processings of next explanation based on the signal being taken into.

Pinking characteristic extracting circuit 21, window control portion 237, knock determination value operational part 231 and knock determination portion 232 Among, the composition of signal of detection window KW is taken into equivalent to first acquisition unit.Pinking characteristic extracting circuit 21, window control Among portion 237 and bad road noise detection unit 233, the composition for being taken into the signal of detection window NW1 obtains single equivalent to second Unit, is taken into the composition of signal of detection window NW2 equivalent to the 3rd acquiring unit.

<First bad road noise determination processing>

Figure 10 is the flow chart of the first bad road noise determination processing.

Predetermined timing of the first bad road noise determination processing in a cycle of electromotor 51 is started, in electromotor 51 Each cycle repeated.

When the first bad road noise determination processing is started, bad road noise detection unit 233 is carried out in detection in step S101 Signal level (hereinafter referred to as " bad road noise detection value ") that window NW1 is extracted is taken into.Specifically, microcomputer 23 with Appointed timing carries out A/D conversion and obtains the digital value after conversion to the output voltage of pinking characteristic extracting circuit 21.

In step s 102, bad road noise detection unit 233 judges whether the bad road noise detection value for obtaining makes an uproar more than bad road Sound threshold value.The process of step S102 is of the process for judging to occur as the bad road noise of extraneous noise.Bad road noise threshold Value is the value being calculated in step S106.

If it is determined that result be affirmative, then in step s 103 bad road noise detection unit 233 by bad road noise states (1) result of determination for occurring is maintained at memorizer etc..Herein, so-called bad road noise states (1) mean occur with few frequency Liao Huai roads noise.Its reason is discussed below.

On the other hand, if it is decided that result be "No", then bad road is made an uproar in step S104 Zhong Huai roads noises detection unit 233 The result of determination that sound state (1) does not occur is maintained at memorizer etc..

In step 8105, the multiple bad road noise that bad road noise detection unit 233 will be acquired in past multiple cycles Detected value calculates the meansigma methodss of bad road noise detection value as totality.

In step s 106, bad road noise detection unit 233 calculates bad road and makes an uproar using the meansigma methodss of bad road noise detection value The threshold value (hereinafter referred to as bad road noise threshold) that the generation of sound state judges.For example, bad road noise detection unit 233 calculates " bad The meansigma methodss of road noise detection value × beforehand through the coefficients that are determined such as experiments " as bad road noise threshold.

As described above, bad road noise detection value be vibrations in engine cycle it is few during the (phase of detection window NW1 Between) in the signal value that is extracted.Thus, in the situation that bad road noise occurs with few frequency, spreading all over multiple electromotor weeks Phase and in the case of obtaining bad road noise detection value, bad road noise detection value is distributed in low horizontal extent.Now, when bad road When noise occurs, bad road noise detection value is turned into high value with being distributed to compare.

On the other hand, the distribution of bad road noise detection value less changes with regard to the tendency of distribution, but with regard to distribution Absolute value, changed according to external factor such as the individual deviations of engine speed or detonation sensor 10.

Therefore, in the bad road noise determination processing of Figure 10, according to the bad road noise for spreading all over multiple engine cycles acquisitions The totality of detected value calculates meansigma methodss (step S105), is multiplied by coefficient in meansigma methodss and determines bad road noise threshold (step S106).Further, it is possible to pass through the bad road noise detection value of comparison and bad road noise threshold, there is bad road noise with few frequency Situation under, judge the generation of bad road noise.

The statistical disposition list processed as the dispersion degree for judging bad road noise detection value of step S102, S105, S106 First function.

Figure 11 is the flow chart of the variation for illustrating the first bad road noise determination processing.

The first bad road noise determination processing of Figure 10 can be changed in the way of Figure 11.That is, the bad road noise of Figure 10 The comparison of detected value and bad road noise threshold and the standard deviation of overall Zhong Huai roads noise detection value and the ratio of predetermined threshold value Relatively it is with value.Thus, as shown in figure 11, bad road noise detection unit 233 calculates the standard deviation of the bad road noise detection value of acquisition Difference (step S112), compares the value for calculating and the bad road noise given threshold (step being determined beforehand through test etc. S113).Thus, bad road noise detection unit 233 is in the same manner as the process of Figure 10, in the situation that bad road noise occurs with few frequency In, can determine that bad road noise occurs with or without.The step of step S111, S114, the process of S115 and Figure 10 S101, The process of S103, S104 is identical.

The process of step S112 plays work(as the statistical disposition unit of the dispersion degree for calculating bad road noise detection value Energy.

As above, the first bad road noise determination processing, can be correctly in the situation that bad road noise occurs with few frequency Judge that bad road noise occurs.On the other hand, in the first bad road noise determination processing, in the situation that bad road noise continually occurs Under, the value when the totality of bad road noise detection value occurs comprising a large amount of bad road noises, therefore, it is difficult to correctly judging that bad road is made an uproar Sound.For example, in the case of more than becoming gradually in bad road noise, in the case where bad road noise becomes big gradually or in these situations In the case of compound, it is difficult to correctly judge that bad road noise occurs in the first bad road noise determination processing.

Then, bad road noise detection unit 233 makes an uproar the second bad road noise determination processing of following explanation with the first bad road Sound determination processing is performed together.

<Second bad road noise determination processing>

Figure 12 is the flow chart for illustrating the second bad road noise determination processing.

Predetermined timing of the second bad road noise determination processing in a cycle of electromotor 51 is started, according to electromotor 51 each cycle is repeatedly executed.

When the second bad road noise determination processing is started, bad road noise detection unit 233 is carried out in detection in step S121 Signal level (hereinafter referred to as " mechanical shock noise detection value ") that window NW2 (Fig. 9) is extracted is taken into.Microcomputer 23 The digital value after conversion is obtained so that appointed timing carries out A/D conversion to the output voltage of pinking characteristic extracting circuit 21.

In step S122, bad road noise detection unit 233 calculates the mechanical shock that will be acquired in multiple cycles in past Noise detection value is used as overall meansigma methodss (equivalent to the second statistical value).

In step S123, bad road noise detection unit 233 obtains the bad road noise measuring being extracted in detection window NW1 Value.The acquisition of the data is processed can be identical with the process of S101 the step of Figure 10.

In step S124, bad road noise detection unit 233 calculates the bad road noise that will be acquired in multiple cycles in past Detected value is used as overall meansigma methodss (equivalent to the first statistical value).

In step s 125, the meansigma methodss and mechanical shock noise of the bad road noise detection value of bad road noise detection unit 233 pairs The meansigma methodss of detected value are compared after with predetermined coefficient weighting.The process of step S125 is to judge that bad road noise occurs One of process.Coefficient be can suitably judge bad road noise in the way of beforehand through the values that are determined such as experiments.

The process of step S122, S124 is used as the statistical disposition unit function for calculating statistical information.

Result of the comparison is, if " meansigma methodss × coefficient of bad road noise detection value " is big, Ze Huai roads noises detection unit 233 The result of determination occurred in step S126 Zhong Jianghuai roads noise states (2) is stored in memorizer etc..So-called bad road noise states (2) Mean the state that bad road noise occurs with high frequency.

On the other hand, if " meansigma methodss × coefficient of bad road noise detection value " is big, Ze Huai roads noise detection unit 233 is in step The result of determination that rapid S127 Zhong Jianghuai roads noise states (2) do not occur is stored in memorizer etc..

Also, the second bad road noise determination processing terminates.

In the situation that bad road noise continually occurs, the signal value of few detection window NW1 is shaken when usual comprising big The big signal value of Liang Huai roads noise, its meansigma methods become big.On the other hand, the detection window NW2's that mechanical noise occurs every time The signal value that period is extracted occupies the component of big mechanical noise, therefore meansigma methodss due to the situation that bad road noise does not occur And do not change very much.

Thus, in the second bad road noise determination processing, can continually be occurred by comparing these meansigma methodss The judgement of the situation of bad road noise.

<Final bad road noise determination processing>

Then, the final bad road noise determination processing to being performed by bad road noise detection unit 233 is illustrated.

Figure 13 is the decision condition table of the final bad road noise determination processing of explanation.

Final bad road noise determination processing is for example held by bad road noise detection unit 233 according to each cycle of electromotor 51 OK.

Bad road noise detection unit 233 judges according to the result of determination and the second bad road noise of the first bad road noise determination processing The result of determination of process judge that final bad road noise occurs by the decision condition table of Figure 13 with or without.

That is, in the result of determination and the result of determination of the second bad road noise determination processing of the first bad road noise determination processing In the case that at least one is the result of determination for occurring, it is judged to there occurs bad road noise as final judgement.

Bad road noise detection unit 233 keeps final result of determination and notifies to the grade of ignition timing operational part 234.

<The variation of detection window>

Herein, the variation of the detection window of the judgement for bad road noise is illustrated.

Figure 14 is the figure of the variation for illustrating the detection window during illustrating the signal extraction of pinking characteristic extracting circuit.

Signal for the judgement of bad road noise is not limited to above-mentioned detection window NW1, NW2, and shaking the condition for occurring can With during being arranged on these other same.

If vibrations have multiple during tailing off when generally, as shown in figure 14, can respectively set many in multiple periods Individual detection window NW1, NW3.During detection window NW3 is corresponded in suction stroke.

In which case it is possible to use the bad road noise detection value being acquired in detection window NW1, NW3 both sides is entering The bad road noise determination processing of row first.And it is possible to according to each the bad road noise being acquired in each detection window NW1, NW3 Detected value carries out the bad road noise determination processing of independent first.

Similarly, if having multiple during the mechanical shock that electromotor 51 consistently occurs, as shown in figure 14, can be with Multiple detection window NW2, NW4 are set respectively in multiple periods.Detection window NW4 is corresponding to the noise generation of taking a seat of inlet valve Period.

In which case it is possible to use the mechanical shock noise detection value being acquired in detection window NW2, NW4 both sides To carry out the second bad road noise determination processing.And it is possible to according to each machinery being acquired in each detection window NW2, NW4 Vibrations noise detection value carries out the bad road noise determination processing of independent second.If during or after a part before It is that during only there are little vibrations, then detection window KW, NW1, NW2, NW3, NW4 can be used as comprising these between by stages It is expanded during between by stages.It is that a shake less than mechanical shock and knock vibration only occurs during the so-called little vibrations of generation During dynamic.In addition, if during detection window KW, NW1, NW2, NW3, NW4 are a part for the vibrations for only occurring little, then Can overlap each other during this part.

<Bad road noise counter plan control process>

Then, the bad road noise counter plan control process to being performed by ignition timing operational part 234 are illustrated.

The flow chart of Figure 15 Shi Huai roads noise counter plan control process.Figure 16 is illustrate bad road noise counter plan control process one The sequential chart of example.Figure 16 is to illustrate the ignition timing for switching pinking countermeasure control process by bad road noise counter plan control process The example of control action.

Predetermined timing of the bad road noise counter plan control process for example in a cycle of electromotor 51 is started, according to send out Each cycle of motivation 51 is repeatedly executed.Bad road noise counter plan control process are by ignition timing operational part 234 and pinking pair Plan control process are concurrently performed.

When bad road noise counter plan control process are started, ignition timing operational part 234 is differentiated from bad road in step S151 Whether the notified final result of determination of noise detection unit 233 is " generation ".

If differentiating that result is " generation ", ignition timing operational part 234 is changed to restored cycle in step S152 Long period D when bad road noise occurs.So-called restored cycle is made when the ignition timing that Fig. 6 and Fig. 7 is illustrated shifts to an earlier date gradually Cycle.

As shown in figure 16, by the change to restored cycle D, do not occurred based on pinking in pinking countermeasure control process The ignition timing of judgement slows in advance.

Then, ignition timing operational part 234 resets timer T in step S154, and makes process advance to step S156.

On the other hand, if the differentiation result of step S151 is " not occurring ", ignition timing operational part 234 is in step Judge in S153 final bad road noise judgement remain " not occurring " situation whether have passed through from the value of timer T it is predetermined Time ST.Scheduled time ST is the very long time compared with restored cycle.

Judge as a result, if without scheduled time ST, ignition timing operational part 234 makes process to step S156 Advance.

On the other hand, if having passed through scheduled time ST, ignition timing operational part 234 makes recovery week in step S155 Phase is become again after cycle C when bad road noise does not occur, and makes process advance to step S156.

As shown in figure 16, by restored cycle C changes, based on sentencing that pinking does not occur in pinking countermeasure control process The speed in advance of fixed ignition timing becomes again originally.

In step S156, ECU 20 increases timer T, and terminates once bad road noise counter plan control process.

Controlled by such bad road noise counter plan, even if occurring due to bad road noise, the judgement precision that pinking occurs Somewhat reduce, and in the case of not realizeing that pinking occurs, the speed in advance of ignition timing is also slack-off.Thereby, it is possible to avoid it Afterwards pinking is multiple.

The Zhong Huai roads noise counter plan control process of present embodiment 1 can be altered to following variation 1,2.

Figure 17 is the flow chart of the variation 1 for illustrating bad road noise counter plan control process.

The example of Figure 17 is adopted and shape occurs according to bad road noise as the method for speed in advance of adjustment ignition timing The lead during recovery of ignition timing is switched to condition the example of the method (step S172, S175) of little value and original value.

Figure 19 is the flow chart of the variation 2 for illustrating bad road noise counter plan control process.

The example of Figure 18 is in the case where being judged to that bad road noise occurs, by using as decision knock determination threshold value The threshold shift of parameter switches to little value (step S182) to avoid there occurs that pinking is but judged to the example that pinking does not occur. If bad road noise does not occur in the scheduled period, threshold shift is become again original value (S185).

The bad road noise counter plan control process of Figure 18 are performed by knock determination value operational part 231.In this case, bad road The final bad road result of determination of noise detection unit 233 is informed to knock determination value operational part 231.

Other steps in Figure 17 and Figure 18 are that the corresponding step identical with Figure 15 is processed, and illustrate to omit.

According to the bad road noise counter plan control process of present embodiment, even if being given due to collisions such as the gravelstones such as bad road traveling The output signal of detonation sensor 10 is mixed into extraneous noise, it is also possible to avoid pinking countermeasure control process malfunction and pinking is more Send out.

(embodiment 2)

In embodiment 2, as pinking countermeasure control process and bad road noise counter plan control process, using adjustment fuel The method replacement of emitted dose adjusts ignition timing in the way of embodiment 1.

Fuel injection operational part 235 can drive fuel by way of with the close optimal value of the air-fuel ratio for making mixed gas The fuel injection device of injection unit 30 is improving fuel economy and output characteristics.On the other hand, in the feelings that pinking occurs Under condition, the fuel injection device of fuel injection unit 30 can be driven by way of ratio with fuel increases to reduce burning The temperature of room and suppress the generation of pinking.

Hereinafter, main explanation and the difference of embodiment 1.

<Pinking countermeasure control process>

Figure 19 is the calculation condition table of the pinking countermeasure control process for illustrating embodiments of the present invention 2.

In Figure 19, so-called " fuel injection amount correction value " is represented based on engine speed and the rotation amount for adjusting handlebar etc. The adjustment amount of the fuel injection amount based on benchmark being determined.So-called " incrementss during knock determination " are represented and are judged as that pinking occurs When fuel injection amount incrementss.So-called " decrement during recovery " is represented and is not judged to that pinking occurs and have passed through restored cycle When fuel injection amount decrement.

In present embodiment 2, fuel injection operational part 235 performs the pinking countermeasure control process of Fig. 6.Fuel injection is transported Calculation portion 235 in S66, by the calculation condition table 72 of Figure 19 fuel spray is calculated the step of pinking countermeasure control process (Fig. 6) The correction value of the amount of penetrating.

For example, as shown in (1) hurdle of Figure 19, if restoring timing and being the judgement for having pinking to occur, then fuel injection Operational part 235 is using fuel injection amount correction value as " reduction during incrementss-recovery during correction value+knock determination before a cycle Amount " is calculated.

As shown in (2) hurdle of Figure 19, if restore timing and be without pinking generation judgement, then fuel injection computing Portion 235 calculates fuel injection amount correction value as " decrement during correction value-recovery before a cycle ".

As shown in (3) hurdle of Figure 19, if not restore timing and be have pinking occur judgement, then fuel injection computing Portion 235 calculates fuel injection amount correction value as " incrementss during correction value+knock determination before a cycle ".

As shown in (4) hurdle of Figure 19, if not restoring timing and being the judgement occurred without pinking, then fuel injection is transported Calculation portion 235 using fuel injection amount as with a cycle before correction value identical value, do not change fuel injection amount correction value.

If so calculating fuel injection amount correction value, fuel injection operational part 235 drives fuel injection unit 30 Fuel injection device so that with from the fuel injection amount of benchmark measure by obtained by fuel injection amount correction value amendment injection combustion Material.

According to such pinking countermeasure control process, in the case where detected pinking, not postponed and being increased combustion Material emitted dose, is prevented from pinking thereafter multiple.Also, in the case where pinking is not detected, fuel injection amount is reduced gradually. By these controls, fuel injection amount is controlled near knock limits, it is possible to increase the fuel economy of electromotor 51 and defeated Go out characteristic.

In the calculation process of fuel injection amount correction value, can be in the way of fuel injection amount be less than appropriate scope To determine the maximum and minima of fuel injection amount correction.And it is possible to be controlled so that in fuel injection amount amendment Amount is set to maximum in the case of having exceeded maximum, and in the case of less than minima minima is set to.

<Bad road noise counter plan control process>

Figure 20 is the flow chart of the bad road noise counter plan control process of embodiment 2.

Predetermined timing of the bad road noise counter plan control process for example in a cycle of electromotor 51 is started, according to send out Each cycle of motivation 51 is repeatedly executed.Bad road noise counter plan control process are by fuel injection operational part 235 and pinking pair Plan control process are concurrently performed.

When bad road noise counter plan control process are started, fuel injection operational part 235 is differentiated in step s 201 from bad road Whether the notified final result of determination of noise detection unit 233 is " generation ".

If differentiation result is " generation ", the answering fuel injection amount in step S202 of fuel injection operational part 235 Decrement is changed to little value when bad road noise occurs when former.Thus, do not occurred based on pinking in the control of pinking countermeasure The reduction of the fuel injection amount of judgement slows.

Then, fuel injection operational part 235 resets timer T in step S204, makes process advance to step S206.

On the other hand, if the differentiation result of step S201 is " not occurring ", fuel injection operational part 235 is in step The judgement of final bad road noise is judged in S203 and whether have passed through scheduled time ST from the value of timer T as " generation ".

Judge as a result, if without scheduled time ST, fuel injection operational part 235 makes process to step S206 Advance.

On the other hand, if having passed through scheduled time ST, fuel injection operational part 235 in step S205 sprays fuel Decrement is become again after value when bad road noise does not occur during the recovery of the amount of penetrating, and makes process advance to step S206.By step The process of S205, original is become again in the control of pinking countermeasure based on the reduction speed of the fuel injection amount of the nonevent judgement of pinking Come.

In step S206, ECU 20 increases timer T, and terminates once bad road noise counter plan control process.

Controlled by such bad road noise counter plan, even if in the generation due to bad road noise and judgement essence that pinking occurs Degree is somewhat reduced, and in the case of not realizeing that pinking occurs, the reduction speed of fuel injection amount is also slack-off.Thereby, it is possible to avoid Afterwards pinking is multiple.

(embodiment 3)

In embodiment 3, as pinking countermeasure control process and bad road noise counter plan control process, adjustment is employed mixed The method replacement for closing the amount (hereinafter referred to as EGR amount) of the EGR gases contained in gas adjusts igniting in the way of embodiment 1 Period.

Executor's control unit 236 can reduce nitrogen oxides (NO by changing the aperture adjustment EGR amount of EGR valve 50_x) Generating capacity, and improve specific fuel consumption.In addition, in the case where pinking occurs, can reduce mixing by increasing EGR amount The ignition temperature of gas is closed suppressing pinking to occur.

Hereinafter, main pair illustrates with the difference of embodiment 1.

<Pinking countermeasure control process>

Figure 21 is the calculation condition table of the pinking countermeasure control process for illustrating embodiments of the present invention 3.

In figure 21, so-called " EGR amount correction value " represents the EGR amount based on benchmark being determined based on engine speed etc. Adjusted value.So-called " incrementss during knock determination " represent the incrementss of EGR amount when being judged to that pinking occurs.It is so-called " to restore When decrement " represent the decrement of EGR amount when not being judged to that pinking occurs and have passed through restored cycle.

In present embodiment 3, executor's control unit 236 performs the pinking countermeasure control process of Fig. 6.Executor's control unit 236 in S66, according to the calculation condition table 73 of Figure 21 the amendment of EGR amount are calculated the step of pinking countermeasure control process (Fig. 6) Value.

For example, as shown in (1) hurdle of Figure 21, if restore timing and be have pinking occur judgement, then executor control Portion processed 236 calculates EGR amount correction value as " before a cycle during correction value+knock determination during incrementss-recovery decrement ".

As shown in (2) hurdle of Figure 21, if restoring timing and being the judgement without pinking generation, then executor's control unit 236 calculate EGR amount correction value as " decrement during correction value-recovery before a cycle ".

As shown in (3) hurdle of Figure 21, if not restoring timing and be the judgement for having pinking to occur, then executor's control unit 236 calculate EGR amount correction value as " incrementss during correction value+knock determination before a cycle ".

As shown in (4) hurdle of Figure 21, if not restoring timing and being the judgement occurred without pinking, then executor controls Portion 236 using EGR amount as with a cycle before correction value identical value, do not change EGR amount correction value.

If so calculating EGR amount correction value, the burning of EGR amount of the executor's control unit 236 to be corrected The mode of the recirculation of gas drives EGR valve 50.

According to such pinking countermeasure control process, do not postponed in the case where pinking generation is judged to and increased EGR amount, is prevented from pinking thereafter multiple.Also, in the case where not being judged to that pinking occurs, EGR amount is reduced gradually.Pass through These controls, EGR amount is controlled near knock limits, it is possible to increase the fuel economy and output characteristics of electromotor 51.

In the calculation process of EGR amount correction value, EGR amount can be determined in the way of EGR amount is less than appropriate scope The maximum and minima of correction.And it is possible to be controlled so that exceeded the situation of maximum in EGR amount correction Under be set to maximum, less than being set to minima in the case of minima.

<Bad road noise counter plan control process>

Figure 22 is the flow chart of the bad road noise counter plan control process of embodiment 3.

Predetermined timing of the bad road noise counter plan control process for example in a cycle of electromotor 51 is started, according to send out Each cycle of motivation 51 is repeatedly executed.Bad road noise counter plan control process are by executor's control unit 236 and pinking countermeasure Control process are concurrently performed.

When bad road noise counter plan control process are started, executor's control unit 236 is differentiated from bad road in step S221 makes an uproar Whether the notified final result of determination of sound detection unit 233 is " generation ".

If differentiating that result is " generation ", executor's control unit 236 will be reduced in step S222 during the recovery of EGR amount Little value when the more bad road noise of quantitative change occurs.Thus, the EGR in the control of pinking countermeasure based on the nonevent judgement of pinking The reduction of amount slows.

Then, executor's control unit 236 resets timer T in step S224, and makes process advance to step S226.

On the other hand, if the differentiation result of step S221 is " generation ", executor's control unit 236 is in step S223 Whether the middle judgement for judging final bad road noise have passed through scheduled time ST as " generation " from the value of timer T.Pre- timing Between ST be the very long time compared with restored cycle.

Judge as a result, if without scheduled time ST, executor's control unit 236 makes process to before step S226 Enter.

On the other hand, if having passed through scheduled time ST, executor's control unit 236 is in step S225 by EGR amount Recovery when decrement become again after value when bad road noise does not occur, make process to step S226 advance.By step S225 Process, become again originally based on the reduction speed of EGR amount of the nonevent judgement of pinking in the control of pinking countermeasure.

In step S226, ECU 20 increases timer T, and terminates once bad road noise counter plan control process.

Controlled by such bad road noise counter plan, even if occurring due to bad road noise and the judgement precision of pinking generation Somewhat reduce, in the case of not realizeing that pinking occurs, the reduction speed of EGR amount is also slack-off.Thereby, it is possible to pinking after avoiding It is multiple.

As above, according to the ECU 20, power unit and Straddle-type vehicle 1 of present embodiment, even if colliding in gravelstone etc. The crankcase of electromotor 51 or power transfering part 52 and in the case of being mixed into Liao Huai roads noise in the output of detonation sensor, Can be detected.Also, by bad road noise counter plan control process, in the case where detected bad road noise pinking is switched The content of countermeasure control process.Thus, even if the judgement precision of pinking generation is somewhat reduced due to the generation of bad road noise, Pinking can be avoided multiple.

More than, the embodiments of the present invention are illustrated.

In the above-described embodiment specifically clear composition and method can be in the models of the purport without departing from invention Suitably change in enclosing.

For example, Straddle-type vehicle according to the present invention is not limited to the automatic two-wheeled cycle of the type shown in Fig. 1, also comprising can also Knee is set to close the vehicle of the scooter type taken.As long as moreover, it relates to Straddle-type vehicle saddle-type, no It is limited to two wheels, can is the vehicle of three-wheel or four-wheel etc..

In addition, in the above-described embodiment, as internal combustion engine to employ the electromotor of 4 strokes and air cooling as a example by carry out Illustrate, but internal combustion engine can be 2 Stroke Engines, in addition, also can be using the present invention for the electromotor of water-cooled.

In addition, in the above-described embodiment, the composition of the sensor to employ the non-co- vibration shape as detonation sensor is Example is illustrated.However, it is possible to the detonation sensor of the resonance type uprised using the detection level of resonance bands, the situation Under, by the way that above-mentioned resonance bands to be set to the frequency band same by domain with the Filtering Processing portion 212 of embodiment, can omit Filtering Processing portion 212.

In addition, in the above-described embodiment, illustrate, in the case where being judged to that bad road noise occurs, changing control Proceed the example of pinking countermeasure control process after parameter (ignition timing, fuel injection amount or EGR amount etc.).However, In the case of being judged to that bad road noise occurs, can carry out being carried with pinking regardless of pinking generation or the result of determination not occurred Mode that is more than needed and not occurring makes control parameter (ignition timing, fuel injection amount or EGR amount etc.) keep out of the way the control of stability region System.

In addition, pinking countermeasure control process and bad road noise counter plan control process can be used as being compounded with above-mentioned embodiment The process of 1～3 each process.

In addition, in the above-described embodiment, as first acquisition unit, second acquisition unit and the 3rd acquiring unit, Interior specific period is taken into constituting for the signal of detonation sensor during showing a cycle that electromotor is formed in by hardware Example.However, these can also be by software sharing.In addition, in the above-described embodiment, as the first control unit, illustrate It is main to be realized carrying out the judgement of pinking generation by software and constituted based on the Combustion System of the electromotor of the result of determination Mode.In addition, as the second control unit, showing the main judgement and change that bad road noise generation is realized by software Mode based on the composition of the content of the Combustion System of the electromotor of the result of determination.However, the first control unit and second Control unit for example can be realized using digital signal processor or sequencer etc. by hardware.

In addition, in the above-described embodiment, by be taken into during specific the detection signal of detonation sensor 10 composition, Judge pinking generation composition, in the case where there occurs pinking by suppress pinking in the way of control electromotor 51 composition, The composition for judging bad road noise generation and the result of determination occurred based on bad road noise change the control content of electromotor 51 Composition is contained in the composition of an ECU20 and is illustrated as an example.However, it is also possible to separated from one anotherly by holding wire etc. even Connect one or more among these compositions and constitute.

In addition, in the present invention, so-called " judgement that pinking occurs " includes various modes.For example, so-called pinking occurs Judgement includes judging the mode that pinking occurs from the detection signal of detonation sensor.In addition, the judgement that so-called pinking occurs also is wrapped Include from the detection signal of detonation sensor and judge the nonevent mode of pinking.The decision method that pinking occurs includes that pinking will be processed Value obtained from the detection signal of sensor compares with the value that there occurs as pinking beforehand through the reference value that experiment is determined Mode.As reference value, as the value that pinking there occurs, it is possible to use calculated by the method being determined beforehand through experiment Value.Also, the decision method that pinking occurs is included in value and reference value obtained from the detection signal for processing detonation sensor Comparative result be the former it is big in the case of be judged to there occurs the mode of pinking.In addition, the decision method that pinking occurs includes Process detonation sensor detection signal obtained from value and reference value comparative result be the former it is little in the case of be judged to The nonevent mode of pinking.

In addition, in the present invention, so-called " judgement that extraneous noise occurs " includes various modes.For example, it is so-called external to make an uproar The judgement that sound occurs includes determining whether to there occurs the mode of extraneous noise, judges the nonevent mode of extraneous noise or carry out this The mode of the judgement of two sides.The decision method that extraneous noise occurs is included obtained from the detection signal for processing detonation sensor The mode that value compares with the value that there occurs as extraneous noise beforehand through the reference value that experiment is determined.As reference value, make For the value that extraneous noise there occurs, it is possible to use the value calculated by the method being determined beforehand through experiment.Also, it is external to make an uproar The decision method that sound occurs is included in the comparative result of value and reference value obtained from the detection signal for processing detonation sensor It is judged to the mode that extraneous noise there occurs in the case that the former is big.In addition, the decision method that pinking occurs is included in processes quick-fried Shake sensor detection signal obtained from value and reference value comparative result be the former it is little in the case of be judged to extraneous noise Nonevent situation.

Industrial applicability

The present invention for example can be used in the Straddle-type vehicles such as automatic two-wheeled cycle, its power unit and ECU.

Claims (12)

1. a kind of control device of internal combustion engine, the control device is equipped on the vibrations of the internal combustion engine of Straddle-type vehicle from detection Detonation sensor input detection signal, it is characterised in that the control device possesses：

First acquisition unit, the first acquisition unit is interior during a cycle of the internal combustion engine, occurs there is pinking Probability first period be taken into from the detonation sensor output signal；

Second acquisition unit, the second acquisition unit is interior during a cycle of the internal combustion engine, is taken in the second phase From the signal of detonation sensor output, the second phase is to remove the first period and remove by the internal combustion engine At least a portion during during the generation of the noise that mechanical shock causes；

First control unit, first control unit sending out based on the signal determining pinking being taken into by the first acquisition unit It is raw, control the internal combustion engine in the way of suppression pinking in the case where pinking there occurs；And

Second control unit, second control unit based on the signal determining being taken into by the second acquisition unit by it is described across The generation of the extraneous noise that the external condition of ride type vehicle causes, and first control unit is changed to institute based on result of determination State the control content of internal combustion engine.

2. the control device of internal combustion engine as claimed in claim 1, is also equipped with the 3rd acquiring unit, and the 3rd acquiring unit exists It is taken between the interior third phase Chong Die with during the generation of the mechanical shock during a cycle of the internal combustion engine from described The signal of detonation sensor output,

Second control unit is taken into based on the signal being taken into by the second acquisition unit and by the 3rd acquiring unit Signal judging the generation of the extraneous noise.

3. the control device of internal combustion engine as claimed in claim 1, wherein,

Second control unit possesses statistical disposition unit, and the statistical disposition unit is calculated and taken by the second acquisition unit The statistical information of the signal for entering,

Second control unit judges the generation of extraneous noise based on the statistical information.

4. the control device of internal combustion engine as claimed in claim 3, wherein,

The statistical disposition unit calculates the dispersion degree of the signal level being taken into by the second acquisition unit as the system Meter information.

5. the control device of internal combustion engine as claimed in claim 2, wherein,

Second control unit possesses statistical disposition unit, the statistical disposition unit calculate by the second acquisition unit and The statistical information of the signal that the 3rd acquiring unit is taken into,

Second control unit judges the generation of extraneous noise based on the statistical information.

6. the control device of internal combustion engine as claimed in claim 5, wherein,

The statistical disposition unit calculates the first statistical value and the second statistical value as the statistical information, first statistical value It is to unite obtained by multiple signal levels to being taken into respectively during multiple cycles by the second acquisition unit are averaged Evaluation, second statistical value is the multiple signal levels to being taken into respectively during multiple cycles by the 3rd acquiring unit Statistical value obtained by averaging,

Second control unit judges extraneous noise based on the relation of first statistical value and second statistical value Occur.

7. the control device of internal combustion engine as claimed in claim 1, wherein,

Second control unit makes the control parameter of the internal combustion engine to suppression in the case where being judged to that extraneous noise occurs The direction change that pinking occurs.

8. the control device of internal combustion engine as claimed in claim 7, wherein,

First control unit carries out periodically shifting to an earlier date internal combustion engine in the case of the judgement that pinking there occurs is no continuously Burning timing control in advance,

Second control unit makes the combustion in control in advance described in advance in the case where being judged to that extraneous noise occurs Burn slowing for timing.

9. the control device of internal combustion engine as claimed in claim 7, wherein,

First control unit includes the signal level being taken into by the first acquisition unit is compared quick-fried to judge with threshold value The process of the generation of shake,

Second control unit changes the determining method of the threshold value in the case where being judged to that extraneous noise occurs.

10. the control device of internal combustion engine as claimed in claim 7, wherein,

Second control unit in the case where being judged to that extraneous noise occurs, the control of the internal combustion engine is switched to no matter The result of determination of pinking and suppress the control of pinking.

A kind of 11. power units of Straddle-type vehicle, possess：

It is equipped on the internal combustion engine of Straddle-type vehicle；

Detect the detonation sensor of the vibrations of the internal combustion engine；And

The control device of the internal combustion engine described in claim 1.

A kind of 12. Straddle-type vehicles, possess：

Internal combustion engine, at least a portion of the internal combustion engine is configured in the lower section of vehicle seat seat surface；

Detonation sensor, the detonation sensor detects the vibrations of the internal combustion engine；And

The control device of the internal combustion engine described in claim 1.