CN108495989A - The operating status of internal combustion engine is determined by the dynamo governor of the motor coupled with internal combustion engine - Google Patents
The operating status of internal combustion engine is determined by the dynamo governor of the motor coupled with internal combustion engine Download PDFInfo
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- CN108495989A CN108495989A CN201680080067.8A CN201680080067A CN108495989A CN 108495989 A CN108495989 A CN 108495989A CN 201680080067 A CN201680080067 A CN 201680080067A CN 108495989 A CN108495989 A CN 108495989A
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- combustion engine
- internal combustion
- motor
- rotating speed
- operating status
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/041—Starter speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The present invention relates to a kind of methods for being determined the operating status (128a 136a) of internal combustion engine (112) by means of control unit (118), described control unit is preferably the adjuster (120) of the motor (114) coupled with the internal combustion engine (112), and method includes step：Determine the time half interval contour of at least one phase signal (121) of the motor (114)；Determine the versus time curve of the rotating speed (122) of the motor (114)；The time versus time curve of the rotating speed (122) of motor (114) is determined from the phase signal (121)；Analyze the time versus time curve of the rotating speed (122), and at least one rotating speed pattern (128 136) caused by the internal combustion engine (112) is exported from the time versus time curve of the rotating speed (122), and determines at least one operating status (128a 136a) of the internal combustion engine (112) based at least one derived rotating speed pattern (128 136).In addition, the present invention relates to being configured to execute the corresponding computing unit (118) of this method, it is related to the motor (114) with computing unit (118) and is related to corresponding computer program.
Description
Technical field
The present invention relates to the method for the operating status for determining internal combustion engine and computing units, are preferred for motor
Adjuster, and the computer program for executing this method.
Background technology
In order to adjust the onboard power system voltage in vehicle, motor, especially separately excited machine can be used.These motors have
Adjuster, the adjuster is according to the exciting current of onboard power system voltage regulation motor.Such machine from
It is known in DE102012204751A1.
Furthermore it is also possible to using so-called intelligent regulator, adjuster is in the operating status that neutral gear is run at motor
Higher exciting current is set, to recycle electric energy, and accelerated in the internal combustion engine by reduction motor output current
In the case of operating status, more driving torques for accelerating vehicle are provided.
If usually referring to motor below, motor can also be can be as generator and/or motor operation
Motor, e.g. so-called starter-generator.
Motor controller is responsible for the identification of these operating statuses of internal combustion engine, adjusting of the motor controller based on itself at this time
Regulation identifies these operating statuses, and the corresponding of the corresponding operating status about internal combustion engine is advised by means of suitable interface
Fixed setting is at the adjuster of motor.Therefore, adjuster is provided by the rated voltage of onboard power system voltage to control generator
Electric current output.
However, this method is cumbersome, because from external determining internal combustion engine only in the motor controller of internal combustion engine
Each operating status, identified operating status are sent to the adjuster of motor, as long as and next needing, adjuster
The adjusting regulation corresponding to the corresponding operating status of internal combustion engine is executed at motor.
In addition, the communication connection between adjuster and motor controller there must be and remain, so as to right
Motor is adjusted accordingly.
Therefore it is desirable that, the running state recognition of internal combustion engine is not based on the adjusting regulation of motor controller, and
It is the measurement of the operating status based on objective status parameter or based on the reliable reflection internal combustion engine for being directly based upon objective status parameter
Parameter.
Invention content
Propose the feature with independent claims it is a kind of for determine internal combustion engine operating status method and
A kind of computing unit and a kind of computer program for executing this method.Advantageous structural scheme be dependent claims with
And theme described below.
Advantages of the present invention
This method is used to be determined the operating status of internal combustion engine by means of control unit, wherein preferably by control unit
It is configured to the adjuster of the motor coupled with internal combustion engine.
Motor can be driven by internal combustion engine, wherein motor is fixedly connected with internal combustion engine, and is for example passed by means of belt
Dynamic device is coupling at the bent axle of internal combustion engine.In this way, determining that at least one phase of motor is believed by means of control unit
Number time changing curve.In the current situation, phase signal is the phase voltage of the phase winding of at least one stator side of motor
And/or phase current, especially relative to the fixed reference current potential being such as grounded.
Then, the time changing curve of the rotating speed of motor is determined from the time changing curve of the phase signal of motor.Later,
The time changing curve of rotating speed is analyzed, and is determined by least one caused by internal combustion engine from the time changing curve of rotating speed
Rotating speed pattern.After this, at least one operating status of internal combustion engine is determined based at least one identified rotating speed pattern,
Wherein, operating status is preferably the operating status for the internal combustion engine being run.
In this way internal combustion engine can be determined in a very simplified manner by means of at least one phase signal of motor
Different operating statuses.This is possible, because of the rotating speed mould of the characterization of the corresponding operating status and associated of internal combustion engine
Formula or tach signal due to the coupling (especially by the belt drive unit of driving motor) between motor and internal combustion engine and that
This transmission.
It is seen that especially by the rotating speed pattern for the corresponding operating status for vibrating or vibrating the characterization internal combustion engine in the form of
It is not only transferred on generator in itself, but characterizes the rotating speed pattern of corresponding operating status directly from the phase signal of motor
The corresponding fortune of internal combustion engine can be extracted and can be inferred to based on corresponding tach signal at least one phase signal
Row state.
Preferably, by means of control unit, before especially being executed by means of the adjuster of the motor coupled with internal combustion engine
State at least one of method and step method and step.Herein, adjuster is preferably arranged into motor or is arranged in structure
At motor.In a control unit, especially corresponding method and step is executed in the adjuster of motor to be particularly advantageous, because
For executing single step or entire method flow, not need communication line by force, such as in the adjusting of motor, especially motor
Device and external unit, the LIN connections especially between motor controller.
It is evident that this connection between dynamo governor and external unit, particularly motor controller
Be fully able to be set, so as to will in motor identified data transmission to motor controller for further processing, or
Even according to the corresponding adjusting framework of vehicle, corresponding motor controller can also execute the part of single method step, from
And this method can be implemented particularly simply and for interference robust.Thus can also redundantly determine value and when necessary
Determine therefrom derived operating status.
In another preferred embodiment of the present invention, this method is used in the not motor of flywheel.Due to
The lasting coupling by force of motor and internal combustion engine, can also preferably be identified by tach signal caused by internal combustion engine.
It is described at least one to pass through rotating speed pattern caused by internal combustion engine in another preferred embodiment of the present invention
It the gradient of the time changing curve of average value with rotating speed and/or shakes with what the time changing curve of the average value of rotating speed was superimposed
The gradient swung, the period especially vibrated and/or amplitude, wherein by means of corresponding filter, preferably adaptive band filter
Device exports corresponding rotating speed pattern.
The corresponding torque pulse shape of internal combustion engine is output to bent axle by internal combustion engine.Torque output frequency basically by
The current rotating speed and number of cylinders of internal combustion engine, particularly internal combustion engine determines.For example, by by means of belt drive by motor
Be coupled at the axis of internal combustion engine, the frequency of the torque of pulse type output is coupled in motor so that the frequency can as with
The oscillation of average tach signal superposition is exported.
The average value of the time changing curve of average rotating speed or rotating speed is determined in the time interval that can determine.This when
Between interval generally include vibrate or vibrate multiple periods and be especially selected such that average value gradient reflection rotating speed become
The time trend of change, such as decline, rising or constant.
It, can be with therefore, because the coupling between motor and internal combustion engine, representational by corresponding rotating speed are reduced or increased
Derive the corresponding current operating status of internal combustion engine.The combination of two rotating speed patterns or rotating speed feature (oscillation or gradient) can be with
It is considered for determining the reasonability of the operating status determined by corresponding other rotating speed patterns in turn.
In order to which determination is caused by internal combustion engine and be coupled to the oscillation in motor, provide, on the time through restriction
The measured value of detection and storage rotating speed, wherein gradient can be detected from these measured values by time extrapolation.In addition, passing through
Detected and value that is being stored forms average value and from corresponding value in the fluctuation of average value, maximum by detecting
Value and minimum value can determine the amplitude of vibration.It is extrapolated by the time of these values, additionally it is possible to determine the frequency of vibration or oscillation
Characteristic.
In addition, alternatively can be from the respective phase signal institute by motor by means of filter, especially frequency filter
Corresponding rotating speed pattern is extracted in determining tach signal, wherein correspond to current motor feature, especially current rotating speed
Or the duty ratio of number of cylinders and respective motors, can correspondingly match the corresponding frequency band of the band filter, so as to from turn
The reliably corresponding oscillation of export in fast signal.
In another preferred structural scheme according to the method for the present invention, the operating status of internal combustion engine is at least determined：
Output torque especially accelerates, or not output torque, especially slides or idling.
Identify that operating status above-mentioned is particularly advantageous, because regulation motor can be carried out corresponding to aforementioned operating status.
In this case, the corresponding operating status of internal combustion engine can be especially determined from the oscillation being superimposed to average tach signal.
Corresponding rotating speed is related to internal combustion engine for the frequency of oscillation, wherein the value of the amplitude of oscillation, the especially amplitude with it is interior
The torque output of the igniting of fuel-air mixture in combustion engine, especially internal combustion engine is related.Here, frequency of oscillation is primary
Approximation directly depends on current average rotating speed, except quantity change such as being closed by cylinder of inactive cylinder barrel.Cause
This, if detecting that frequency of oscillation increases or decreases, which allows to determine whether the rotating speed of internal combustion engine increases or decreases,
Or increase or decrease how many.
From the amplitude size of oscillation can correspondingly determine internal combustion engine whether output torque, this can conclude that internal combustion engine plus
Speed or idling.In the case where the very little of oscillation is until negligible amplitude, this can be inferred that defeated not over internal combustion engine
The fuel-air mixture gone out in torque or internal combustion engine is not lighted a fire, and especially neutral gear is run.
Idle feature in particular, in that, although it is observed that the output of torque, i.e. notable visible amplitude size,
But not it is observed that the significant of rotating speed increaseds or decreases.
In addition, not by the way that in the operating status of torque output of combustion engine, the gradient of rotation speed change curve is considered for
Assessment and determining corresponding operating status, because in the running status, oscillation is very small.In addition, passing through described method
The time transitional region between single operating status can be clearly detected, this can be with advantageous particularly with regulation motor
Mode is used.
In another preferred embodiment of the method for the service condition for determining internal combustion engine, this method has another
Outer method and step determines the motor pattern of internal combustion engine by motion sensor, and based on described in extremely in this method step
Lack an identified motor pattern to determine the operating status of internal combustion engine.
The corresponding operating status of internal combustion engine other than being determined from rotating speed pattern determined by the phase signal by motor,
It can also be determined from the motor pattern of motion sensor, the motion sensor and internal combustion engine, which be in, effectively to be connect, preferably
It is arranged on motor.
The information source for resulting in redundancy can export the corresponding operating status of internal combustion engine from the information source.For this purpose,
Especially optical motion sensor or with MEMS (MEMS) or other such as acceleration transducer based on piezoelectric ceramics
It is suitable as motion sensor for the acceleration transducer of form.
Herein it may further be preferable that comparing identified operating status and internal combustion engine in the slave rotating speed pattern of internal combustion engine
Slave motor pattern in identified operating status.
Pass through the identified operating status from corresponding sensor (motor in other words computing unit or motion sensor)
Combination, the respective sensing advantage of sensor can be most preferably utilized, so as to reliably determine the almost every of internal combustion engine
A possible operating status.Particularly, internal combustion engine start or stop it is usual to shake movement with strong shaking associated, can pass through
Motion sensor reliably determines the rolling movement of shaking.By based on rotating speed pattern and/or motor pattern relatively determined by run
State, as long as needing, operating status can also also be compared to each other and be examined reasonability.Determined by two sensors
In the case of operating status is contradictory, the adjusting strategy being further set for this state or failure of motor can also be started
Report.
In another preferred embodiment, this method has the another method step for regulation motor, another at this
In one method and step, the exciting current of the motor in the corresponding operating status of internal combustion engine is adjusted so that the braking torque of motor
It increases or reduces.
Based on internal combustion engine it is corresponding determined by operating status be advantageous to adjust accordingly motor because thus adding
Fast process is (in the accelerator, it should as far as possible so that all torsion torque with output required by internal combustion engine is transformed into propulsion
In) in the case of reduce motor braking torque, braking torque even can be reduced to 0, so as not to damage accelerator.Accordingly
Ground during the neutral gear operation of internal combustion engine, can improve the system of motor by being adjusted the exciting current of motor by means of adjuster
Dynamic torque, the speed that thus on the one hand can adjust the vehicle for accommodating the internal combustion engine increase, and are made by neutral gear operation
At energy absorption can be for being fed in carried on vehicle power grid by means of the recycling of motor.
Herein especially preferably, it under the rated voltage and/or rated current of regulation carried on vehicle power grid or is advising
Determine the lower adjusting exciting current of maximum current output, wherein it is defeated that maximum current is preferably parameterized according to the operating status of internal combustion engine
Go out and/or maximum exciting current.
By such exciting current adjustment as defined in rated voltage or rated current based on carried on vehicle power grid,
Can correspondingly it implement in the running corresponding recycling of the neutral gear of internal combustion engine or motor in the Accelerating running of internal combustion engine
It is run almost without the companion of braking torque.Alternatively, this adjusting can also give carried on vehicle power grid by adjusting output
Maximum current adjust, wherein and can parameterize this maximum current according to the corresponding operating status of internal combustion engine.It is this
Parametrization can carry out or be implemented by inquiring the parameter being stored in combined characteristic in a digital manner.
Computing unit is particularly preferably arranged in motor but can also be arranged in the tune for motor of outside motor
Device is saved, is particularly advantageous, because thus, it is possible to be executed according to the method for the present invention with form in a particularly simple way.The party
Implementation of the method in the adjuster of motor is also particularly advantageous in this regard, this is because the assessment of the signal (determines corresponding
Operating status and adjustment motor) can be carried out based on identified operating status when no additional PERCOM peripheral communication connects.
The further advantage and structural scheme of the present invention are obtained from specification and appended attached drawing.
Description of the drawings
Fig. 1 is shown passes through motor control part to motor based on operating status according to the prior art by means of communication connection
Adjusting schematic diagram；
Fig. 2 a) motor according to the present invention that shows in a schematic form internal combustion engine and be coupled at internal combustion engine；
Fig. 2 b) show in a schematic form internal combustion engine and the motor being coupled at internal combustion engine according to another embodiment；
Fig. 2 c) show in a schematic form another motor according to yet another embodiment；
Fig. 3 shows the time changing curve and therefrom derived rotating speed of the phase voltage of motor；
Fig. 4 shows the rotation speed change curve of internal combustion engine, and multiple fortune of internal combustion engine are experienced in the rotation speed change curve
Row state；
Fig. 5 a)-e) show five exemplary operating statuses selected of the internal combustion engine determined from rotating speed pattern；With
Fig. 6 a)-g) show seven exemplary fortune selected of the internal combustion engine determined from the motor pattern of motion sensor
Row state.
Specific implementation mode
The known control for adjusting the voltage in carried on vehicle power grid 10 from the prior art is shown in FIG. 1
Portion.Carried on vehicle power grid 10 is supplied by means of being coupled to the motor 14 at internal combustion engine 12, wherein by means of coupling element
16, typically belt drive unit passes through 12 driving motor 14 of internal combustion engine.In order to adjust onboard power system voltage 10, it is provided with to adjust
The computing unit 18 that device 20 is form is saved, which adjusts accordingly the exciting current of motor according to onboard power system voltage 10.
In order to according to the corresponding operating status of internal combustion engine 12 come adjust adjusting from the electric energy to onboard power system 10 or
It feeds, the corresponding operating status of usual internal combustion engine 12 is determined by the controller 22 for distributing to internal combustion engine 12, following controller 22
Adjuster 20 is transmitted control signals to by communication connection 24, to be adjusted corresponding to the corresponding operating status of internal combustion engine 12
The exciting current of motor 14.Herein, the adjuster 20 of motor 14 or the corresponding computing unit being arranged in outside motor 14 be not (
Show) it is passive always and is only configured to about the determination of the corresponding operating status of internal combustion engine 12：It is controlled based on passing through
The manipulation that device 22 carries out, improves corresponding to corresponding operating status or reduces the exciting current of motor 14.
Fig. 2 a) it shows the structure according to the present invention of internal combustion engine 112 and is connected to the knot of the motor 114 of internal combustion engine 112
The schematic diagram of structure, wherein motor 114 is driven by means of belt 116 by internal combustion engine 112.Belt 116 is in motor-side and internal combustion engine
112 bent axle 117 effectively connects.Due to the expansion stroke of the corresponding cylinder barrel of internal combustion engine 112, internal combustion engine 112 is in a manner of pulse type
To 117 output torque of bent axle.The frequency of torque output is determined by the current rotating speed of internal combustion engine 112 and the number of cylinders of internal combustion engine 112
It is fixed.In four stroke motors, the frequency of torque output is determined by following formula：
fTorque=nKWNumber of cylinders/2/60*,
Wherein, nKWIt is the rotating speed or crankshaft revolutions per minute of internal combustion engine 112.
This non-uniform torque output can generate trembling when clutch is opened on the rotating speed of axis, or in clutch
The corresponding vibration characteristic of motor body is generated when closure, this is because in the case where clutch is closed, due to the vehicle being coupled to
Quality, rotating speed may be considered that constant in first approximation.By the fixed coupling of motor 114 and internal combustion engine 112, (this is fixed
Coupling by using belt as form or motor 114 to be fixedly connected on internal combustion engine 112 or the coupling element of form is in place
116 realize), corresponding trembling caused by the torque output the pulse type by internal combustion engine 112 or general oscillation are transmitted to electricity
Machine 114.
It can be from the phase signal 120a of motor 114 due to the fixed coupling between motor 114 and internal combustion engine 112
(referring to Fig. 3) extracts these oscillations.It is described according to the method for the present invention by means of executing the computing unit 118 of this method.For
Control and assessment, it is the computing unit according to the present invention 118 of adjuster 120 that motor 114, which has form, and computing unit is set
It is set to the time changing curve that rotating speed 122 is determined from phase signal 121, wherein the time changing curve of rotating speed 122 is analyzed,
And rotating speed pattern 128-136 (referring to Figure 4 and 5) is exported from the time changing curve of rotating speed 122, which is from internal combustion
It is obtained in the vibration of the representational pulse type of machine 112.
It is further configured to by computing unit 118 of the adjuster 120 in the form of：Based on rotating speed pattern 128-136 derived from institute
It determines the operating status 128a-136a (referring to Figure 4 and 5) of internal combustion engine 112, and corresponding peripheral control unit is not necessarily to this.Electricity
Machine 114 is attached to the computing unit 118 of the motor therefore is configured to be totally independent of external analysis and/or external control list
Member executes above method step.
Describe in figure 2b) and other be similar to Fig. 2 a) embodiment.Herein with it is identical however with other
Reference numbers characterization and Fig. 2 a of alphabetical (b)) identical or comparable feature.Motor 114b has to be connected with motor 114b
It connects and is in the motion sensor 115b in effectively connecting with internal combustion engine 112b.Therefore, motion sensor 115b can be passed through
Determine the motor pattern 228-242 of internal combustion engine 112b.Based on identified motor pattern 228-242, and it can determine internal combustion engine
The operating status 228a-242a of 112b (referring to Fig. 6).
Therefore, the corresponding operating status 128-136A or 228a-242a of internal combustion engine 112b is in addition to from by motor 114b's
It, also can be from the motor pattern 228- of motion sensor 115b outside rotating speed pattern 128-136 determined by phase signal 121 is determined
242 determine, which is arranged at motor 114b and therefore with internal combustion engine 112b in effectively connecting.Obviously,
As long as detection motor movement is possible, motion sensor can also be mounted on (not shown) at other positions.
The information source for resulting in redundancy can reliably export the corresponding operation of internal combustion engine 112b from the information source
State.Especially optical motion sensor or with MEMS (MEMS) or others for example based on piezoelectric ceramics (not drawing)
Acceleration transducer is that the acceleration transducer of form is suitable as motion sensor 115b.
In addition, identified operating status 128a-136a and internal combustion engine in the slave rotating speed pattern 128-136 of internal combustion engine 112
112a identified operating status 228a-242a from motor pattern 228-242 can be compared.By being sensed from corresponding
Operating status 128a-136a or 228a- determined by device (motor 114 or computing unit 118 or motion sensor 115b)
The combination of 242a can most preferably utilize the phase inductive sensing advantage of sensor, so as to reliably determine the several of internal combustion engine 112
Each possible operating status.
Particularly, the startup 242a of internal combustion engine 112 or stopping 238a is usually with internal combustion engine 112 reliably by moving biography
The strong rolling movement of shaking that sensor 115b can determine is associated (to this referring to Fig. 6 f) and g)).By being based on rotating speed pattern 128-
The relatively more identified operating status 128a-136a of 136 and/or motor pattern 228-242, the identified operating status of difference
128a-136a or 228a-242a (as long as needs) also can also be compared to each other and be examined reasonability.By two sensor institutes
In the case of determining operating status 128a-136a or 228a-242a is contradictory, can also start motor 114 is directed to this shape
The adjusting strategy or Trouble Report (not shown) that state is further set.
Fig. 2 c) show an alternative embodiment of the invention.Herein with it is identical however with it is other it is alphabetical c)
Reference numbers characterize and Fig. 2 a) or Fig. 2 b) identical or comparable feature.Think with being further simplified, according to fig. 2 b)
Embodiment in the case of, determined from corresponding rotating speed pattern 128-136 or motor pattern 228-242 it is unique not with phase
In addition the contradictory operating status 128a-136a of pattern answered, the operating status also include state：Internal combustion engine stops 228a and internal combustion
Machine starts 242a.
It is further configured to identification internal combustion engine 112 by the computing unit 118c that form constructs of the adjuster 120c of motor 114c
Operating status 128a-136a or 228a-242a (referring to Figures 5 and 6), and the operation recognized based on internal combustion engine 112
State 128a-136a or 228a-242a, by exciting current be matched to internal combustion engine 112 corresponding operating status 128a-136a or
228a-242a so that the braking torque of motor 112 increases or reduces.In this case, in regulation carried on vehicle power grid
The rated voltage U of 110csollAnd/or rated current IsollIn the case of, or in regulation maximum current output IMaxIn the case of, it adjusts
Save exciting current, wherein I can be exported according to the operating status of internal combustion engine 112 to parameterize maximum currentMax。
Pass through the rated voltage U based on carried on vehicle power grid 110csollOr rated current IsollIt is defined such right
Exciting current IErrAdjusting, can correspondingly be easy implement internal combustion engine 112 neutral gear operation 130a in it is corresponding recycle or
The companion almost without braking torque of motor 114a in the Accelerating running 128a of internal combustion engine runs (referring to Fig. 5).Alternatively
Ground, this adjusting can also be by adjusting maximum current I of the output to carried on vehicle power gridMaxTo adjust, wherein according to interior
The corresponding operating status 128a-136a of combustion engine 112, and maximum current I can be parameterizedMax(referring to Fig. 5 or Fig. 6).This seed ginseng
Numberization can carry out or implement (not shown) by inquiring the parameter being stored in combined characteristic in a digital manner.This
Outside, it may be provided for operating status to start 242a or stop the corresponding adjusting regulation of 238a, wherein the braking torque of motor
Accordingly reduce when starting 242a, in order to avoid unnecessarily damage start-up course.
It is also advantageous that activating the so-called of adjuster 120 " to call out from standby operation by means of motion sensor 115b
Wake up ", in the standby operation, motor is for instance in internal combustion engine 112 through in off state.In addition, coming from rotating speed by combination
The information of change curve and motion sensor 115b can clearly identify operating status " idling ", this is because in the operation shape
In state, the output power of motor 114 can only gradually increase, to ensure the sufficient rear adjustment (not shown) of internal combustion engine 112.
It is described in further detail in figure 3 from the phase signal 121 of motor 114 and determines tach signal 122.In present case
Under, phase signal 121 is a phase voltage in the phase voltage 121a of motor.Obviously, motor 114 can be substantially used thus
The arbitrary phase voltage of each of one or more phases, but also corresponding phase current can be used, therefrom to determine motor
114 tach signal, and it is coupled to the tach signal of internal combustion engine 112 at the motor and rotating speed pattern 128-136 (does not show
Go out).When using more than one phase voltage, the corresponding higher temporal resolution (not shown) of tach signal may be implemented.
Phase voltage 121a is distributed to rectangle in the generator exported with electric current in first approximation.In phase voltage 121a
This signal at, average phase time T can be detectedPhase, wherein it preferably can at the sharp edge of phase voltage 121a
Determine the phase time.Phase time TPhasePass through the rotating speed pattern 128- to be characterized for the corresponding operating status of internal combustion engine 112
136 are modulated for the fluctuation of speed of form and show current rotating speed by following formula：
Wherein, nKWBe unit be rev/min speed of crankshaft,It is the transmission ratio between bent axle and generator shaft, and
And PPZ is the number of pole-pairs of generator.(value is in a time interval for the value correspondingly of rotating speed 122 and mean speed 122a
The interior average value corresponding to rotating speed 122) it is also similarly shown as in figure 3 a little or line.The time interval can be selected especially
It is averaging in multiple oscillations.
Rotating speed preferably can be determined digitally.As already described, by means of the phase signal to motor 114
The time interval T of amplitude in 121PhaseMeasurement, it may be determined that transient speed nKW.As long as known within the period detected
Such as parameter of the number of cylinders of motor 114, transmission ratio and number of pole-pairs, adjuster 118 can be for example by the tachometer values of fixed quantity
Storage in memory, such as is stored in shift register (not shown), and true respectively at least within a cycle of oscillation
Fixed minimum and maximum transient speed.Maximum and minimum instantaneous velocity is preferably in time range detected respectively
Peak speed.Difference between these rotating speeds is the measurement of the torque exported by internal combustion engine 112.In order to accurately determine TPhase,
Advantageously, it is ensured that in TPhaseHigh time resolution around average value.It in this case, can be with for better resolution ratio
Rotating speed is determined based on the rising edge of phase voltage 121a and failing edge.In principle, it can detect in memory any amount of
Tachometer value, however, wherein the whole cycle of vibration should be detected for assessment.
Sampling rate in order to illustrate generator is enough correspondingly to trigger rotating speed 122 and what is be especially superimposed with rotating speed shakes
It swings, hereinafter consider the ratio of corresponding frequency and is compared with Nyquist criterion.Nyquist criterion requirement,
fel/fmoment>=2.Based on motor rotary speed, utilizeGenerator frequency or electricity are obtained
Unit frequency, wherein nKWIt is the rotating speed of internal combustion engine.
In conjunction with for fmomentFormula, obtain
Thus for example forPPZ=6, number of cylinders=4 have obtained quotient fel/fmoment=9.Even very big
High cylinder motor in, such as in 12 cylinder motors, ratio fel/fmoment=3, wherein also meet Nyquist always herein and adopt
Calibration is then.
Fig. 4 shows the rotation speed change curve 122 of the internal combustion engine 112 in longer time section.The rotation speed change curve
122 have corresponding rotating speed pattern 128,130,132,134,136, different operations of the rotating speed pattern for internal combustion engine 112
State 128a, 130a, 132a, 134a, 136a are characterizations.In Fig. 5 a) to amplification illustrates corresponding rotating speed mould again in e)
Formula 128 to 136.In Fig. 5 a) to depicting rotating speed respectively about the time in e).
Fig. 5 a) show the operating status 128a of internal combustion engine 112, in the running status, 112 output torque of internal combustion engine.
It is the accelerator carried out to vehicle by internal combustion engine 112 herein.It is passed from by belt drive unit 116 from internal combustion engine 112
The oscillation of detected rotating speed 122 has been obtained in defeated oscillation or vibration on motor 114.Oscillation frequency in tach signal
Rate is associated with motor 114 or the current rotating speed 122 of internal combustion engine 112.
In addition, in Fig. 5 a) shown in the section of tach signal 122 there is continuous raised change curve.Therefrom as it can be seen that
The rotating speed 122 of internal combustion engine 112 increases continuously.In this regard, increasing for rotating speed 122 can also be from the increasing continuously of vibration frequency
Export.More obtained oscillation amplitude is the measurement of the torque exported by internal combustion engine 112 compared with mean speed 122a.Therefore,
From directly can capable of determining whether torque is exported by internal combustion engine 112 from the derived amplitude vibrated of rotation speed change curve 122.
Fig. 5 b) show the other rotating speed pattern 130 shown for the operating status 130a of internal combustion engine 112, in internal combustion
The rotating speed pattern is obtained in the case of the neutral gear operation of machine 112.Herein, the oscillation of detected rotating speed 122 is very low
, and correspond essentially in mean speed 122a, this is because the braking torque of internal combustion engine 112 only passes through internal combustion engine 112
Cylinder compression and idling torque generate.Therefore, internal combustion engine 112 shows very quiet in neutral gear operation.Current neutral gear
The feature of the rotating speed pattern 130 of operating status 130a in particular, in that, occur almost without oscillation, and rotation speed change curve has
Always the gradient declined.It, can be by means of according to the present invention based on this for the rotating speed pattern 130 of neutral gear operation 130a characterizations
Method easily identify internal combustion engine 122 neutral gear operation 130a.
Fig. 5 c) show another rotating speed pattern 132 characterized for the operating status 132a of internal combustion engine 112.Current
In the case of, internal combustion engine 112 is in idling.This finds out in being kept constant in first approximation from mean speed 122a,
In, rotating speed 122 has the vibration with approximately uniform amplitude and identical frequency.It can be obtained in this regard from constant frequency
Go out, rotating speed will not increase or decrease.It can be derived by means of notable identifiable amplitude, 112 output torque of internal combustion engine.
Fig. 5 d) show another rotating speed pattern 134 characterized for the other operating status 134a of internal combustion engine 112.
In this case, the vehicle for accommodating internal combustion engine 112 is in descent run in neutral gear operation.It is herein as it can be seen that average
Rotating speed 122a is increased and almost invisible speed oscillation, this is characterization for neutral gear operation (referring to Fig. 5 b).
In Fig. 5 e) in, show with torque and decline the up-hill journey of rotating speed 122.It can be seen that mean speed 122a
It is continuously reduced, this can be identified by the gradient of rotation speed change curve 122, but can also in time may be used by oscillation
The frequency of change identifies.Further, it can be seen that keeping nearly constant by the torque that internal combustion engine 112 exports.
Rotating speed pattern 128 to 136 based on characterization, the previously described operating status 128a-136a of internal combustion engine 112 can be with
Reliably identified and distinguished between.The computing unit 118 of the operating status 128a-136a based on determined by corresponding, motor 114 are set
It is set to so that the computing unit is especially the exciting current for improving motor in neutral gear runs 130a and 134a, thus via motor
Realize braking torque.The kinetic energy being correspondingly transferred on motor is converted into electric energy and for being fed in carried on vehicle power grid.This
A process also referred to as recycles.
Correspondingly, it is ignited in internal combustion engine in fuel-air mixture and the therefore fortune of 112 output torque of internal combustion engine
In row state 128a and 136a, the exciting current of motor 114 correspondingly reduces, and drops to zero sometimes so that is wanted by internal combustion engine 112
The torque asked is not compensated by the possible braking torque of generator.In idle 132a, exciting current can basis respectively
It needs to be adjusted accordingly, however wherein to be given much attention to, exciting current is so adjusted so that is interior under idle conditions
The running stability of combustion engine 112 will not significantly be interfered.
Fig. 6 a) to g) respectively illustrate characterization internal combustion engine 112 operating status 228a to 242a motor pattern 228 to
242, the motor pattern can be determined (referring to Fig. 2 b) by means of motion sensor 115b.In the current situation, Fig. 6 a) to e) showing
Operating status 228a to 236a is gone out, which corresponds to the derived basis from corresponding rotating speed pattern 128 to 136 again
Fig. 5 a) to operating status 128a to 136a e).
Fig. 6 a) show the motor pattern 228 for operating status 238a determined by means of motion sensor 115b,
Fuel air mixture in middle internal combustion engine 112 is ignited and accommodates the vehicle of internal combustion engine 112 and is in accelerator.It is right
In the operating status, internal combustion engine is evident that flutter or vibration are characterizations, can be derived from the flutter or vibration
Operating status 228a.
Fig. 6 b) show another motor pattern 230 that the neutral gear operation 230a for internal combustion engine 112 is characterized.In neutral gear
In operation, usually not fuel air mixture is ignited in internal combustion engine 112, therefore motor shows very quiet.This can
To find out from extremely flat motor pattern 230, which only has very small fluctuation.
Fig. 6 c) show another motor pattern 232 characterized for the operating status 232a of 112 idling of internal combustion engine.
In the idle 232a of internal combustion engine 112, do not show especially by the vibration mode 232 detected by vibrating sensor 115b
Obviously, this is because being usually not in interior in the case of the smaller torque output of internal combustion engine 112 in this state
The vibration of the particularly significant performance of combustion engine 112.
Fig. 6 d) show the motor pattern 234 characterized for the other operating status 234a of internal combustion engine 112.Current,
The vehicle for accommodating internal combustion engine 112 is in descent run in neutral gear operation.Since internal combustion engine 112 is in neutral gear operation,
Therefore usually fuel air mixture is not had to be ignited in internal combustion engine 112, thus internal combustion engine 112 shows very quiet.This
It is significantly shown, can be detected by motion sensor 115b at the vibration mode 234 characterized for the operating status
The vibration mode.
In Fig. 6 e) in show torque with internal combustion engine 112 and decline the up-hill journey of rotating speed, wherein up-hill journey
Required torque is reflected in the motor pattern 236 of internal combustion engine 112 showed.
Fig. 6 f) show another operating status 238a of internal combustion engine.The typical pass of internal combustion engine 112 is shown herein
Disconnected characteristic.Internal combustion engine 112 has relatively stable motor pattern, until turning off the moment 239.It carves when off, passes through internal combustion engine
The suddenly change of operating status obtained momentum, which makes the of short duration vibration in motor pattern 238 notable.In shutdown
After combustion engine, internal combustion engine 112 no longer has further movement.
Fig. 6 g) show another operating status 242a of internal combustion engine.In the current situation, this is connecing for internal combustion engine 112
Pass through journey, wherein before connecting the moment 240, the movement of internal combustion engine 112 is not detected by motion sensor 115b.
The moment 240 is connected, generates strong momentum (momentum leads to the judder and flutter in short-term of internal combustion engine 112), and with
Afterwards generate be approximately corresponding to Fig. 6 c) shown in internal combustion engine 112 idle vibration stage.
Can particularly simple it be known by the momentum for connecting process or turn off process characterization accordingly of internal combustion engine 112
Not in Fig. 6 f) with g) shown in internal combustion engine 112 turn off process 228a or connect process 242a.In addition, particularly, via fortune
Dynamic sensor 115b can very well detect the connection process 242a of internal combustion engine shown in Fig. 6 (g), this is because working as internal combustion engine
When 112 shutdown, motor is generally in standby mode, in the standby mode, in start-up course, it is not easy to can be inferred that
From the phase signal 121 of motor 114 the reason of identified rotation speed change.Therefore, from rotation speed change curve (and by motor
114 phase signal determines the rotation speed change curve) when determining operating status, indefinite operating status can be obtained, the fortune
Row state is compared by means of the data detected by the motion sensor 115b and therefore can be reliably determined.Separately
Outside, initializing signal or " wake-up signal " for motor 114 may be used as to the determination being actuated for by motion sensor, with
Just the setting especially in adjuster 118 in motor 114 is correspondingly initialized for the startup of internal combustion engine 112.
Claims (11)
1. the method for operating status (128a-136a) of the one kind for determining internal combustion engine (112), has step：
A) determine that the time change of at least one phase signal (121) of the motor (114) coupled with the internal combustion engine (112) is bent
Line；
B) time changing curve of the rotating speed (122) of the motor (114) is determined from the phase signal (121)；
C) it is determined from the time changing curve of the rotating speed (122) through at least one of the internal combustion engine (112) generation
Rotating speed pattern (128-136)；And
D) based on identified at least one rotating speed pattern (128-136), at least one of the internal combustion engine (112) is determined
Operating status (128a-136a).
2. according to the method described in claim 1, it is characterized in that, determining the rotating speed from the rotating speed pattern (128-136)
(122) gradient of the time changing curve of average value, and/or determine the time change with the average value of the rotating speed (122)
The oscillation of curve combining, the period especially vibrated and/or amplitude.
3. method according to claim 1 or 2, which is characterized in that at least determine the operation shape of the internal combustion engine (112)
State：Fuel-air mixture (128a, 132a, 136a's) lights, the acceleration (128a) of the especially described internal combustion engine (112) and/
Or idling (132a) and/or start, and/or do not light fuel-air mixture, especially slide (130a, 134a) and/or
The stopping of internal combustion engine (112).
4. according to the method in any one of claims 1 to 3, it is characterised in that method and step in addition：E) pass through movement
Sensor (115b) determines the motor pattern (228-236) of the internal combustion engine (112), and f) based on identified at least one
Motor pattern (228-236) determines at least one operating status (228a-236a) of the internal combustion engine (112).
5. according to the method described in claim 4, it is characterized in that, the internal combustion engine (112) from the rotating speed pattern
Identified operating status (128a-136a) and the internal combustion engine (112) from the motor pattern (228- in (128-136)
236) identified operating status (228a-236a) in.
6. the method according to any one of claims 1 to 5, it is characterised in that it includes other method and step：Adjust institute
State the exciting current (I of motor (114)Err) arrive in the corresponding operating status of the internal combustion engine (112) so that the motor (114)
Braking torque increase or reduce.
7. according to the method described in claim 6, it is characterized in that, in the rated voltage for providing carried on vehicle power grid (110)
(Usoll) and/or rated current (Isoll) in the case of, or in regulation maximum current output (IMax) in the case of, it is encouraged described in adjusting
Magnetoelectricity stream (IErr), wherein it is defeated that the adjusting maximum current is preferably parameterized according to the operating status of the internal combustion engine (112)
Go out (IMax) and/or the maximum exciting current.
8. a kind of computing unit (118), in particular for the adjuster (120) of motor (114), the computing unit is configured to
It executes according to any method of the preceding claims.
9. a kind of motor (114) has computing unit according to claim 8 (118) and for determining motor pattern
The motion sensor (115b) of (228-242).
10. a kind of computer program, when executing the computer program on computing unit (118), the computer program
The computing unit is promoted to execute according to any method of the preceding claims.
11. a kind of computer-readable storage medium, have storage on said storage according to described in claim 11
Computer program.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016201124.3 | 2016-01-27 | ||
| DE102016201124.3A DE102016201124A1 (en) | 2016-01-27 | 2016-01-27 | Determining operating states of an internal combustion engine by a generator controller of an electric machine coupled to the internal combustion engine |
| PCT/EP2016/082125 WO2017129330A1 (en) | 2016-01-27 | 2016-12-21 | Determining operating states of an internal combustion engine by means of a generator regulator of an electric machine which is coupled to the internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108495989A true CN108495989A (en) | 2018-09-04 |
Family
ID=57680258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680080067.8A Pending CN108495989A (en) | 2016-01-27 | 2016-12-21 | The operating status of internal combustion engine is determined by the dynamo governor of the motor coupled with internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3408519B1 (en) |
| CN (1) | CN108495989A (en) |
| DE (1) | DE102016201124A1 (en) |
| WO (1) | WO2017129330A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778436A (en) * | 2019-09-30 | 2020-02-11 | 潍柴动力股份有限公司 | Control method and control device for starting engine |
| CN111688666A (en) * | 2019-03-15 | 2020-09-22 | 罗伯特·博世有限公司 | Method for operating a device having an internal combustion engine and an electric machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018200639A1 (en) * | 2017-12-15 | 2019-06-19 | Robert Bosch Gmbh | Method and device for determining a rotational speed of a crankshaft of an internal combustion engine |
| DE102017222856A1 (en) * | 2017-12-15 | 2019-06-19 | Robert Bosch Gmbh | Method and device for determining a direction of rotation of a crankshaft of an internal combustion engine |
| DE102018200526A1 (en) * | 2018-01-15 | 2019-07-18 | Robert Bosch Gmbh | Method for detecting a starting mode of an internal combustion engine |
| DE102018200521A1 (en) * | 2018-01-15 | 2019-07-18 | Robert Bosch Gmbh | Method for determining a position of an internal combustion engine |
| DE102018200527A1 (en) * | 2018-01-15 | 2019-07-18 | Robert Bosch Gmbh | Method for determining a position of an internal combustion engine |
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| CN110778436A (en) * | 2019-09-30 | 2020-02-11 | 潍柴动力股份有限公司 | Control method and control device for starting engine |
| CN110778436B (en) * | 2019-09-30 | 2021-10-08 | 潍柴动力股份有限公司 | Control method and control device for starting engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3408519B1 (en) | 2020-05-27 |
| WO2017129330A1 (en) | 2017-08-03 |
| EP3408519A1 (en) | 2018-12-05 |
| DE102016201124A1 (en) | 2017-07-27 |
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