CN107831018A - One kind burning recognition methods and device - Google Patents
One kind burning recognition methods and device Download PDFInfo
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- CN107831018A CN107831018A CN201711061968.5A CN201711061968A CN107831018A CN 107831018 A CN107831018 A CN 107831018A CN 201711061968 A CN201711061968 A CN 201711061968A CN 107831018 A CN107831018 A CN 107831018A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/044—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests
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Abstract
The invention provides one kind burning recognition methods and device, this method to include：The current value and magnitude of voltage of generator are obtained, and calculates generator actual power；Calculate engine theoretical power (horse-power)；Calculate the power error value of generator actual power and engine theoretical power (horse-power)；Judge power error value whether in default error allowed band；If power error value in default error allowed band, determines that engine is in normal combustion state；If power error value determines that engine is in abnormal combustion state not in default error allowed band.Method disclosed by the invention, burning identification can be completed using the current value and magnitude of voltage of generator, and the current value and magnitude of voltage of generator are directly determined by engine, therefore it can reduce or even avoid to ensure the error of analysis result, improve the degree of accuracy of burning identification.
Description
Technical field
The present invention relates to technical field of engine control, more specifically to one kind burning recognition methods and device.
Background technology
Power source of the engine as automobile, mainly using gasoline or diesel oil as fuel, largely it is harmful to caused by burning
Gas and particulate matter are the important sources of air pollution.Therefore, to meet the requirement of energy-saving and emission-reduction, it is necessary to engine combustion mistake
Journey is identified and then controlled.
At present, engine combustion identification technology depends on cylinder pressure sensors.Cylinder pressure sensors are constantly surveyed
In-cylinder pressure is measured, engine controller analyzes combustion process using in-cylinder pressure.
But due to the pressure of diverse location in cylinder and differ, the in-cylinder pressure measured by cylinder pressure sensors
The pressure of its position is also only, not cylinder integral pressure.Therefore, this will go out the analysis result of engine controller
Existing error, so as to reduce the degree of accuracy of burning identification.
The content of the invention
In view of this, the present invention provides a kind of burning recognition methods and device, to solve available engine burning identification skill
There is the problem of error in analysis result caused by art dependence cylinder pressure sensors.Technical scheme is as follows：
One kind burning recognition methods, applied to engine controller, including：
The current value and magnitude of voltage of generator are obtained, and calculates generator actual power；
Calculate engine theoretical power (horse-power)；
Calculate the power error value of the generator actual power and the engine theoretical power (horse-power)；
Judge the power error value whether in default error allowed band；
If the power error value in the default error allowed band, determines that the engine is in normal combustion shape
State；
If the power error value determines that the engine is in abnormal combustion not in the default error allowed band
State.
Preferably, the current value and magnitude of voltage for obtaining generator, including：
The analog current value and analog voltage for the generator that reception signal conditioning device is sent, the analog current value and institute
It is to handle what is obtained to the voltage and current signal of the generator by the signal conditioner to state analog voltage；
The current value of the generator is calculated according to the analog current value, and according to calculating the analog voltage
The magnitude of voltage of generator.
Preferably, the calculating engine theoretical power (horse-power), including：
Calculate engine output torque；
According to the engine output torque and default engine wear moment of torsion, engine net output torque is calculated；
The rotating speed of the engine is obtained, and according to the rotating speed and the engine net output torque, calculates engine
Net power；
According to the engine net power and default efficiency conversion factor, engine theoretical power (horse-power) is calculated.
Preferably, it is described to determine that the engine is in abnormal combustion state, afterwards, in addition to：
Warning information is generated, the warning information is used to characterize engine combustion exception.
Preferably, the generation warning information, including：
Determine the warning level corresponding to the power error value；Generate warning information corresponding to the warning level.
One kind burning identification device, it is characterised in that including：First computing module, the second computing module, the 3rd calculate mould
Block, judge module, the first determining module and the second determining module；
First computing module, for obtaining the current value and magnitude of voltage of generator, and calculate generator actual power；
Second computing module, for calculating engine theoretical power (horse-power)；
3rd computing module, for calculating the power of the generator actual power and the engine theoretical power (horse-power)
Error amount；
The judge module, for judging the power error value whether in default error allowed band；
First determining module, if determining institute in the default error allowed band for the power error value
State engine and be in normal combustion state；
Second determining module, if for the power error value not in the default error allowed band, it is determined that
The engine is in abnormal combustion state.
One kind burning identification device, including：First computing module, the second computing module, the 3rd computing module, judge mould
Block, the first determining module and the second determining module；
First computing module, for obtaining the current value and magnitude of voltage of generator, and calculate generator actual power；
Second computing module, for calculating engine theoretical power (horse-power)；
3rd computing module, for calculating the power of the generator actual power and the engine theoretical power (horse-power)
Error amount；
The judge module, for judging the power error value whether in default error allowed band；
First determining module, if determining institute in the default error allowed band for the power error value
State engine and be in normal combustion state；
Second determining module, if for the power error value not in the default error allowed band, it is determined that
The engine is in abnormal combustion state.
Preferably, for obtaining the current value of generator and first computing module of magnitude of voltage, it is specifically used for：
The analog current value and analog voltage for the generator that reception signal conditioning device is sent, the analog current value and institute
It is to handle what is obtained to the voltage and current signal of the generator by the signal conditioner to state analog voltage；According to the mould
Intend the current value that current value calculates the generator, and the magnitude of voltage of the generator is calculated according to the analog voltage.
Preferably, second computing module, is specifically used for：
Calculate engine output torque；According to the engine output torque and default engine wear moment of torsion, hair is calculated
The net output torque of motivation；The rotating speed of the engine is obtained, and according to the rotating speed and the engine net output torque, is calculated
Engine net power；According to the engine net power and default efficiency conversion factor, engine theoretical power (horse-power) is calculated.
Preferably, second determining module, afterwards, in addition to：Information generating module；
Described information generation module, for generating warning information, the warning information is used to characterize engine combustion exception.
Preferably, described information generation module, it is specifically used for：
Determine the warning level corresponding to the power error value；Generate warning information corresponding to the warning level.
Compared to prior art, what the present invention realized has the beneficial effect that：
The above present invention provides a kind of burning recognition methods and device, and the current value and magnitude of voltage that can obtain generator calculate
Generator actual power, and then combine engine theoretical power (horse-power) and calculate power error value, so as to be determined again based on power error value
The fired state of engine.
Method disclosed by the invention, it can complete burning using the current value and magnitude of voltage of generator and identify, and generator
Current value and magnitude of voltage directly determined by engine, therefore can reduce or even avoid ensure analysis result error, carry
The degree of accuracy of height burning identification.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the method flow diagram of burning recognition methods provided in an embodiment of the present invention；
Fig. 2 is the Part Methods flow chart of burning recognition methods provided in an embodiment of the present invention；
Fig. 3 is the another Part Methods flow chart of burning recognition methods provided in an embodiment of the present invention；
Fig. 4 is the another method flow diagram of burning recognition methods provided in an embodiment of the present invention；
Fig. 5 is another Part Methods flow chart of burning recognition methods provided in an embodiment of the present invention；
Fig. 6 is the structural representation of burning identification device provided in an embodiment of the present invention；
Fig. 7 is the another structural representation of burning identification device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of burning recognition methods, and this method is applied to engine controller, method flow diagram
As shown in figure 1, comprise the following steps：
S10, obtains the current value and magnitude of voltage of generator, and calculates generator actual power；
During step S10 is performed, engine controller can be believed by the current signal and voltage for gathering generator
The current value and magnitude of voltage of number determination generator, and the voltage signal and current signal due to generation current machine can not be by engines
Controller Direct Recognition, therefore, the voltage signal and current signal of generator are gathered using intermediate equipment, and then again by starting
Machine controller obtains the current value and magnitude of voltage of generator, and formula (1) is calculated as follows and calculates generator actual power：
P1=I*U (1)
Wherein, P1For generator actual power, I is the current value of generator, and U is the magnitude of voltage of generator.
During specific implementation, the process of " current value and magnitude of voltage that obtain generator " in step S10 can be specific
It is as shown in Figure 2 using following steps, method flow diagram：
S101, the analog current value and analog voltage of the generator that reception signal conditioning device is sent, the analog current
Value and the analog voltage are to handle what is obtained to the voltage and current signal of generator by signal conditioner；
During performing step S101, a signal conditioner is set between generator and engine controller, should
Signal conditioner can obtain the primary signal of generator, that is, the current signal and voltage signal of generator, and then respectively will
The current signal and voltage signal of generator are converted to low level, such as 0~5V current signal and voltage signal, engine control
Device processed can be by two-way analog quantity by gathering low level current signal and low level voltage signal, so that it is determined that generator
Analog current value and analog voltage.
S102, the current value of generator is calculated according to analog current value, and the electricity of generator is calculated according to analog voltage
Pressure value；
During step S102 is performed, engine controller, which can utilize, presets the electric current that transformation rule determines generator
Value and magnitude of voltage, specifically, default transformation rule is relevant with reduction multiple of the signal conditioner to level.
S20, calculate engine theoretical power (horse-power)；
During step S20 is performed, it can be determined according to the current working of engine, such as according to the rotating speed of engine
The distributive value of engine, and then engine theoretical power (horse-power) is determined according to the rotating speed and distributive value of engine, specifically, determining to start
The current distributive value of machine can directly obtain from preset rotation speed-distributive value curve, can also have by record between rotating speed and distributive value
Obtained in the MAP of mapping relations, this implementation is not specifically limited.
During specific implementation, step S20 " calculating engine theoretical power (horse-power) " process, following step can be specifically used
Suddenly, method flow diagram is as shown in Figure 3：
S201, calculate engine output torque；
During step S201 is performed, the output torque of engine is relevant with the rotating speed of engine and distributive value, can
Determine that concrete form can be curve, may be used also using mapping relations of (rotating speed, the distributive value) pre-established between output torque
For MAP tables etc., the present embodiment is not specifically limited.
S202, according to engine output torque and default engine wear moment of torsion, calculate engine net output torque；
During step S202 is performed, because engine self friction damage during torque output be present in engine
Consumption and accessory loss, such as the loss of vehicle air conditioning etc., therefore, when calculating engine net output torque, it is necessary to consider to start
Moment of torsion is lost in machine, and the engine wear moment of torsion includes but is not limited to engine friction torque and accessory loss moment of torsion.
During step S202 is performed, formula (2) can be calculated as follows and calculate generator actual power：
T=T1-T2 (2)
Wherein, T is engine net output torque, T1For engine output torque, T2To preset engine wear moment of torsion.
S203, the rotating speed of engine is obtained, and according to rotating speed and engine net output torque, calculate engine net power；
During step S203 is performed, formula (3) can be calculated as follows and calculate engine net power：
Wherein, P2It is the rotating speed of N engines for engine net power.
S204, according to engine net power and default efficiency conversion factor, calculate engine theoretical power (horse-power)；
During step S204 is performed, formula (4) can be calculated as follows and calculate engine theoretical power (horse-power)：
P3=P2*α (4)
Wherein, P3For engine theoretical power (horse-power), α is default efficiency conversion factor.
S30, calculate the power error value of generator actual power and engine theoretical power (horse-power)；
During step S30 is performed, formula (5) can be calculated as follows and calculate power error value：
Wherein, ε is power error value.
S40, judge power error value whether in default error allowed band；If so, then perform step S50；If it is not, then
Perform step S60；
S50, determine that engine is in normal combustion state；
S60, determine that engine is in abnormal combustion state.
Above step S101~step S102 is only " to obtain the current value of generator in the embodiment of the present application step S10
And magnitude of voltage " process a kind of preferable implementation, the specific implementation about this process can be according to the demand of oneself
It is any to set, do not limit herein.
Above step S201~step S204 is only " to calculate engine theoretical power (horse-power) " in the embodiment of the present application step S20
Process a kind of preferable implementation, the specific implementation about this process can arbitrarily set according to the demand of oneself,
Do not limit herein.
Burning recognition methods provided in an embodiment of the present invention, it can complete to burn using the current value and magnitude of voltage of generator
Identification, and the current value of generator and magnitude of voltage are directly determined by engine, therefore can reduce or even avoid to ensure to analyze
As a result error, the degree of accuracy of burning identification is improved.
The burning recognition methods provided based on above-described embodiment, the embodiment of the present invention then provide another burning identification side
Method, method flow diagram is as shown in figure 4, comprise the following steps：
S10, obtains the current value and magnitude of voltage of generator, and calculates generator actual power；
S20, calculate engine theoretical power (horse-power)；
S30, calculate the power error value of generator actual power and engine theoretical power (horse-power)；
S40, judge power error value whether in default error allowed band；If so, then perform step S50；If it is not, then
Perform step S60；
S50, determine that engine is in normal combustion state；
S60, determine that engine is in abnormal combustion state；
S70, generates warning information, and the warning information is used to characterize engine combustion exception.
It is abnormal for prompting driver's engine combustion, can after step S50 determines that engine is in abnormal combustion state,
Generate warning information；Prior-warning device can remind driver's engine combustion different after receiving the warning information with presets
Often, for example, prior-warning device can be warning light or middle control large-size screen monitors, warning light lights, flashes or turn colors, in
Control large-size screen monitors, which play image or play sound, can prompt driver.
In addition, it is provided in an embodiment of the present invention burning recognition methods in step S10~step S60 implementation procedure with it is upper
State in embodiment that step S10~step S60 is consistent, will not be repeated here, refer to part disclosed in the above embodiment of the present invention.
During specific implementation, the process of " generation warning information " in step S70, following steps can be specifically used,
Method flow diagram is as shown in Figure 5：
S701, determine the warning level corresponding to power error value；
During step S701 is performed, multiple warning levels are preset, for example, power error value is less than or equal to
It is yellow early warning when 0.5；Then it is red early warning when power error value is more than 0.5, can be determined now according to power error value
Warning level.
S702, generate warning information corresponding to warning level.
, can be according to the warning information for presetting each warning level, for example, yellow during step S702 is performed
During early warning, first warning information bright for characterizing amber light is generated；And during red early warning, then generate for characterize when red
Two warning information, and then, warning information is sent to warning light, so that warning light, which produces, lights corresponding lamp, it is certainly, also settable
Other warning information, the present embodiment are not specifically limited.
Burning recognition methods provided in an embodiment of the present invention, the premise for ensureing the error of analysis result is even avoided reducing
Under, warning information prompting driver can be also generated, improves drive safety.
The burning recognition methods provided based on the various embodiments described above, the embodiment of the present invention, which then provides, performs above-mentioned burning identification
The device of method, its structural representation as shown in fig. 6, including：First computing module 10, the second computing module the 20, the 3rd calculate
Module 30, judge module 40, the first determining module 50 and the second determining module 60；
First computing module 10, for obtaining the current value and magnitude of voltage of generator, and calculate generator actual power；
Second computing module 20, for calculating engine theoretical power (horse-power)；
3rd computing module 30, for calculating the power error value of generator actual power and engine theoretical power (horse-power)；
Judge module 40, for judging power error value whether in default error allowed band；
First determining module 50, if for power error value in default error allowed band, determine that engine is in just
Normal fired state；
Second determining module 60, if determining that engine is in not in default error allowed band for power error value
Abnormal combustion state.
Optionally, for obtaining the current value of generator and the first computing module 10 of magnitude of voltage, it is specifically used for：
The analog current value and analog voltage for the generator that reception signal conditioning device is sent, the analog current value and institute
It is to handle what is obtained to the voltage and current signal of generator by signal conditioner to state analog voltage；Calculated according to analog current value
The current value of generator, and according to the magnitude of voltage of analog voltage calculating generator.
Optionally, the second computing module 20, is specifically used for：
Calculate engine output torque；According to engine output torque and default engine wear moment of torsion, engine is calculated
Net output torque；The rotating speed of engine is obtained, and according to rotating speed and engine net output torque, calculates engine net power；According to
According to engine net power and default efficiency conversion factor, engine theoretical power (horse-power) is calculated.
Burning identification device provided in an embodiment of the present invention, it can complete to burn using the current value and magnitude of voltage of generator
Identification, and the current value of generator and magnitude of voltage are directly determined by engine, therefore can reduce or even avoid to ensure to analyze
As a result error, the degree of accuracy of burning identification is improved.
The burning identification device provided based on above-described embodiment, the present invention provide another burning identification device, its structure
Schematic diagram is as shown in fig. 7, the second determining module 60, afterwards, in addition to：Information generating module 70；
Information generating module 70, for generating warning information, the warning information is used to characterize engine combustion exception.
Optionally, information generating module 70, it is specifically used for：
Determine the warning level corresponding to power error value；Generate warning information corresponding to warning level.
Burning identification device provided in an embodiment of the present invention, the premise for ensureing the error of analysis result is even avoided reducing
Under, warning information prompting driver can be also generated, improves drive safety.
A kind of burning recognition methods provided by the present invention and device are described in detail above, it is used herein
Specific case is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands this
The method and its core concept of invention；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, specific
There will be changes in embodiment and application, in summary, this specification content should not be construed as to the present invention's
Limitation.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
For device disclosed in embodiment, because it is corresponded to the method disclosed in Example, so fairly simple, the phase of description
Part is closed referring to method part illustration.
It should also be noted that, herein, such as first and second or the like relational terms are used merely to one
Entity or operation make a distinction with another entity or operation, and not necessarily require or imply between these entities or operation
Any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to contain
Lid nonexcludability includes, so that the key element that process, method, article or equipment including a series of elements are intrinsic,
Either also include for these processes, method, article or the intrinsic key element of equipment.In the absence of more restrictions,
The key element limited by sentence "including a ...", it is not excluded that in the process including the key element, method, article or equipment
In other identical element also be present.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. one kind burning recognition methods, it is characterised in that applied to engine controller, including：
The current value and magnitude of voltage of generator are obtained, and calculates generator actual power；
Calculate engine theoretical power (horse-power)；
Calculate the power error value of the generator actual power and the engine theoretical power (horse-power)；
Judge the power error value whether in default error allowed band；
If the power error value in the default error allowed band, determines that the engine is in normal combustion state；
If the power error value determines that the engine is in abnormal combustion shape not in the default error allowed band
State.
2. according to the method for claim 1, it is characterised in that the current value and magnitude of voltage for obtaining generator, including：
The analog current value and analog voltage for the generator that reception signal conditioning device is sent, the analog current value and the mould
It is to handle what is obtained to the voltage and current signal of the generator by the signal conditioner to intend magnitude of voltage；
The current value of the generator is calculated according to the analog current value, and the generating is calculated according to the analog voltage
The magnitude of voltage of machine.
3. according to the method for claim 1, it is characterised in that the calculating engine theoretical power (horse-power), including：
Calculate engine output torque；
According to the engine output torque and default engine wear moment of torsion, engine net output torque is calculated；
The rotating speed of the engine is obtained, and according to the rotating speed and the engine net output torque, calculates engine net work
Rate；
According to the engine net power and default efficiency conversion factor, engine theoretical power (horse-power) is calculated.
4. according to the method described in claims 1 to 3 any one, it is characterised in that described to determine that the engine is in different
Normal fired state, afterwards, in addition to：
Warning information is generated, the warning information is used to characterize engine combustion exception.
5. according to the method for claim 4, it is characterised in that the generation warning information, including：
Determine the warning level corresponding to the power error value；
Generate warning information corresponding to the warning level.
6. one kind burning identification device, it is characterised in that including：First computing module, the second computing module, the 3rd calculate mould
Block, judge module, the first determining module and the second determining module；
First computing module, for obtaining the current value and magnitude of voltage of generator, and calculate generator actual power；
Second computing module, for calculating engine theoretical power (horse-power)；
3rd computing module, for calculating the power error of the generator actual power and the engine theoretical power (horse-power)
Value；
The judge module, for judging the power error value whether in default error allowed band；
First determining module, if determining the hair in the default error allowed band for the power error value
Motivation is in normal combustion state；
Second determining module, if for the power error value not in the default error allowed band, it is determined that described
Engine is in abnormal combustion state.
7. device according to claim 6, it is characterised in that for obtaining described in the current value and magnitude of voltage of generator
First computing module, is specifically used for：
The analog current value and analog voltage for the generator that reception signal conditioning device is sent, the analog current value and the mould
It is to handle what is obtained to the voltage and current signal of the generator by the signal conditioner to intend magnitude of voltage；According to the simulation electricity
Flow valuve calculates the current value of the generator, and the magnitude of voltage of the generator is calculated according to the analog voltage.
8. device according to claim 6, it is characterised in that second computing module, be specifically used for：
Calculate engine output torque；According to the engine output torque and default engine wear moment of torsion, engine is calculated
Net output torque；The rotating speed of the engine is obtained, and is started according to the rotating speed and the engine net output torque, calculating
Machine net power；According to the engine net power and default efficiency conversion factor, engine theoretical power (horse-power) is calculated.
9. according to the device described in claim 6 to 8 any one, it is characterised in that second determining module, afterwards, also
Including：Information generating module；
Described information generation module, for generating warning information, the warning information is used to characterize engine combustion exception.
10. device according to claim 9, it is characterised in that described information generation module, be specifically used for：
Determine the warning level corresponding to the power error value；Generate warning information corresponding to the warning level.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966110A (en) * | 2019-12-20 | 2020-04-07 | 潍柴动力股份有限公司 | Engine exhaust gas recirculation method and device |
| CN111038490A (en) * | 2019-12-26 | 2020-04-21 | 联合汽车电子有限公司 | Method and system for identifying engine combustion and readable storage medium |
| CN112161742A (en) * | 2020-09-30 | 2021-01-01 | 潍柴动力股份有限公司 | Power sensor detection method, device, equipment and storage medium |
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