CN104712447B - Combustion parameter adjusting method and device for engine using ethanol fuel - Google Patents
Combustion parameter adjusting method and device for engine using ethanol fuel Download PDFInfo
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- CN104712447B CN104712447B CN201410853872.2A CN201410853872A CN104712447B CN 104712447 B CN104712447 B CN 104712447B CN 201410853872 A CN201410853872 A CN 201410853872A CN 104712447 B CN104712447 B CN 104712447B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 191
- 239000000446 fuel Substances 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 96
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000004148 curcumin Substances 0.000 claims abstract description 45
- 238000012937 correction Methods 0.000 claims description 28
- 238000012795 verification Methods 0.000 claims description 25
- 238000012360 testing method Methods 0.000 claims description 8
- 241000208340 Araliaceae Species 0.000 claims description 4
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 4
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 235000008434 ginseng Nutrition 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 3
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
The invention discloses a combustion parameter adjusting method for an engine using ethanol fuel. The method comprises the steps that S11, first combustion parameter values of E22 fuel and E100 fuel under the given working condition are obtained; S12, a predicted combustion parameter value of checking fuel is calculated using an interpolation method formula; S13, an actual combustion parameter value of the checking fuel under the given working condition is obtained; S14, a first difference value between the predicted combustion parameter value and the actual combustion parameter value is calculated; S15, whether the first difference value is within the reasonable range or not is judged, if the answer is yes, S16 is executed, or else S17 is executed; S16, a predicted combustion parameter value of target fuel is calculated according to the interpolation method formula; S17, the interpolation method formula is corrected, and then S12 is executed. The combustion performance of the engine can be guaranteed by the combustion parameter adjusting method. The invention further discloses a combustion parameter adjusting device for the engine using the ethanol fuel.
Description
Technical field
The present invention relates to engine structure design field, more particularly to a kind of combustion of the electromotor of employing alcohol fuel
Burn parameter testing method.The invention further relates to a kind of combustion parameter debugging apparatus of the electromotor of employing alcohol fuel.
Background technology
In short supply with petroleum resources, increasing substitute fuel is developed.Alcohol fuel is used as internal combustion engine generation
There is following advantage with fuel:1. octane number is high, and ethanol is nontoxic, and to environment non-hazardous, and methyl tertiary butyl ether(MTBE) is by Huaiji meeting
Polluted underground water, carcinogenic etc., therefore ethanol can replace the unleaded antiknock additive methyl tertiary butyl ether(MTBE) that is presently using;2.
Ethanol is oxygenated fuel, and evaporation latent heat is high, and engine for combusting ethanol can realize smokeless emission, and CO rows can be greatly lowered
Put, while HC and NOXThere can also be different degrees of reduction.
The source of alcohol fuel is quite varied, and its regeneration capacity is strong, and the large agricultural country such as Brazil abounds with Caulis Sacchari sinensis, unnecessary
Caulis Sacchari sinensis compressible is prepared into ethanol, to solve energy problem into juice after fermentation, dehydration.In existing market, E22, E100 are only existed
The fuel of two kinds of proportionings, but being used in mixed way for both fuel is not prohibited, that is to say, that and generally existing shows on market
As if, vehicle arbitrarily adds the alcohol fuel of E22, E100 of different proportion, the ethanol content in engine fuel per chassis
All it is flexibility and changeability.
The electric-control system of electromotor needs to adjust combustion parameter according to the property of fuel, will with the operation that this meets electromotor
Ask.However, only existing in conventional art based on the engine tune-up method of 93# Fuel Petroleums, without entering for alcohol fuel
The method of row combustion parameter debugging, causes the combustibility using the electromotor of alcohol fuel poor.
The content of the invention
It is an object of the invention to provide a kind of combustion parameter adjustment method of the electromotor of employing alcohol fuel, the method energy
Enough improve the combustibility of electromotor.It is a further object of the present invention to provide a kind of burning ginseng of electromotor of employing alcohol fuel
Number debugging apparatus.
To achieve these goals, the present invention provides following technical scheme:
A kind of combustion parameter adjustment method of the electromotor of employing alcohol fuel, comprises the following steps:
The first combustion parameter values of S11, acquisition E22 fuel and E100 fuel under given operating mode;
S12, the prediction combustion parameter values that verification fuel is calculated using interpolation method formula, the verification fuel is fuel ratio
Fuel between E22 and E100, the interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:The underlying parameter is E22 combustions
First combustion parameter values of material, the side-play amount is first combustion parameter values and the E22 of the E100 fuel
Difference between first combustion parameter values of fuel, the correction factor is the known coefficient obtained according to ethanol content;
The Actual combustion parameter value of S13, the acquisition verification fuel under given operating mode;
The first difference between S14, the calculating prediction combustion parameter values and the Actual combustion parameter value;
S15, judge that whether first difference is located in zone of reasonableness, if it is, into step S16, otherwise entering step
Rapid S17;
S16, the prediction combustion parameter values that desired fuel is calculated according to the interpolation method formula;
S17, the interpolation method formula is corrected, subsequently into step S12.
Preferably, in above-mentioned combustion parameter adjustment method, " the interpolation method formula is carried out in step S17
Correction " specifically includes following steps:
Obtain the second combustion parameter values of the E22 fuel and the E100 fuel under given operating mode;
Calculate the second difference between second combustion parameter values and first combustion parameter values;
When second difference is located in zone of reasonableness, the correction factor is adjusted;Close when second difference is located at
When outside reason scope, by the interpolation method formula, first combustion parameter values of the E22 fuel and the E100 fuel
Replace with second combustion parameter values;
First combustion parameter values and the second combustion parameter values are obtained by experiment.
Preferably, in above-mentioned combustion parameter adjustment method, also include between step S11 and step S12 with
Lower step:
S21, process first combustion parameter values, and first combustion parameter values are inserted into the parameter arteries and veins of debugging apparatus
In spectrum, the repetition combustion parameter values of the E22 fuel and the E100 fuel under given operating mode are obtained, calculate the repetition and fire
Burn the 3rd difference between parameter value and first combustion parameter values;
S22, when judging that whether the 3rd difference is located in zone of reasonableness, if it is, into step S12;Otherwise, enter
Step S21.
Preferably, in above-mentioned combustion parameter adjustment method, the fuel ratio of the verification fuel is E60.
Preferably, in above-mentioned combustion parameter adjustment method, the combustion parameter adjustment method is applied to the angle of ignition, air-fuel
Than the debugging of, charging efficiency and inlet exhaust gas temperature.
A kind of combustion parameter debugging apparatus of the electromotor of employing alcohol fuel, are applied to any one of claim 1-5 institute
The combustion parameter adjustment method stated, including:
Parameter acquiring unit, for obtaining the first combustion parameter values of E22 fuel and E100 fuel under given operating mode, with
And Actual combustion parameter value of the verification fuel under given operating mode;
Computing unit, for calculating the prediction combustion parameter values and desired fuel of the verification fuel using interpolation method formula
Prediction combustion parameter values, and it is described prediction combustion parameter values and the Actual combustion parameter value between the first difference, institute
It is fuel of the fuel ratio between E22 and E100 to state verification fuel, and the interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:The underlying parameter is E22 combustions
First combustion parameter values of material, the side-play amount is first combustion parameter values and the E22 of the E100 fuel
Difference between first combustion parameter values of fuel, the correction factor is the known coefficient obtained according to ethanol content;
Judging unit, for judging whether first difference is located in zone of reasonableness;
Correction unit, school is carried out during for outside being located at zone of reasonableness in first difference to the interpolation method formula
Just;
The computing unit calculates the prediction burning of the desired fuel when first difference is located in zone of reasonableness
Parameter value;
The correction unit is specifically for obtaining the second combustion of the E22 fuel and the E100 fuel under given operating mode
Burn parameter value;Calculate the second difference between second combustion parameter values and first combustion parameter values;When described second
When difference is located in zone of reasonableness, the correction factor is adjusted;When outside second difference is located at zone of reasonableness, will be described
First combustion parameter values of E22 fuel described in interpolation method formula and the E100 fuel replace with the second burning ginseng
Numerical value, first combustion parameter values and the second combustion parameter values are obtained by experiment.
In above-mentioned technical proposal, the present invention provides a kind of combustion parameter debugging side of the electromotor of employing alcohol fuel
Method, obtains first the first combustion parameter values of E22 fuel and E100 fuel under given operating mode, then is calculated using interpolation method formula
The prediction combustion parameter values of verification fuel, then obtain Actual combustion parameter value of the verification fuel under given operating mode, are now
The first difference between prediction combustion parameter values and Actual combustion parameter value can be calculated, then judges whether first difference is located at
In zone of reasonableness, if it is, the prediction combustion parameter values of desired fuel are calculated according to interpolation method formula, otherwise, to interpolation method
Formula is corrected, and then recalculates the prediction combustion parameter values of verification fuel, until prediction combustion parameter values and actual combustion
The first difference burnt between parameter value is located in zone of reasonableness.
Above-mentioned combustion parameter adjustment method is by acquisition E22 fuel and the first combustion parameter values of E100 fuel, interpolation meter
The prediction combustion parameter values of verification fuel are calculated, and obtains Actual combustion parameter value of the verification fuel under given operating mode, with true
The accuracy of guarantor's interpolation method formula, and then the combustion parameter of one fuel of the fuel ratio between E22 and E100 is accurately drawn,
And then the combustibility of guarantee electromotor.
Because above-mentioned combustion parameter adjustment method has above-mentioned technique effect, the combustion of the combustion parameter adjustment method is applied to
Burning parameter testing device should also have corresponding technique effect.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only described in the present invention
A little embodiments, for those of ordinary skill in the art, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the flow chart of combustion parameter adjustment method provided in an embodiment of the present invention;
Fig. 2 is another flow chart of combustion parameter adjustment method provided in an embodiment of the present invention;
Fig. 3 is in the embodiment of the present invention, under given operating mode, the charging efficiency of E22 fuel;
Fig. 4 is in the embodiment of the present invention, under given operating mode, the charging efficiency of E100 fuel;
Fig. 5 is in the embodiment of the present invention, using the prediction charging efficiency of the calculated E60 fuel of interpolation method formula.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with accompanying drawing to this
It is bright to be further detailed.
As shown in figure 1, the embodiment of the present invention provides a kind of combustion parameter adjustment method of the electromotor of employing alcohol fuel,
The combustion parameter that the method is applied can for the angle of ignition, air-fuel ratio, charging efficiency and inlet exhaust gas temperature etc., the method include with
Lower step:
The first combustion parameter values of S100, acquisition E22 fuel and E100 fuel under given operating mode;
E22 fuel is exactly the fuel that 22% ethanol and gasoline are obtained by mixing, and E100 fuel is exactly 100% ethanol combustion
Material, aforementioned given operating mode generally may include the air inlet phase of electromotor, pressure ratio between back pressure and admission pressure etc., and first
Combustion parameter values can be the first numerical value of the angle of ignition, or the first numerical value of air-fuel ratio, or the first numerical value of charging efficiency, or
First numerical value of person's inlet exhaust gas temperature.It should be noted that can be by existing to the acquisition of combustion parameter in the embodiment of the present invention
The assay device of some Fuel Petroleums is carried out.
S110, the prediction combustion parameter values that verification fuel is calculated using interpolation method formula;
The verification fuel be fuel of the fuel ratio between E22 and E100, such as E30, E40, E70 etc., herein
Interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:Underlying parameter is the first of E22 fuel
Combustion parameter values, side-play amount is the difference between first combustion parameter values and the first combustion parameter values of E22 fuel of E100 fuel
Value, correction factor is the known coefficient obtained according to ethanol content, and the coefficient of accomplishing corresponding to the alcohol fuel of every kind of proportioning can
Can differ.
The Actual combustion parameter value of S120, acquisition verification fuel under given operating mode;
The first difference between S130, the above-mentioned prediction combustion parameter values of calculating and Actual combustion parameter value;
First difference generally can be absolute value.
S140, judge that whether above-mentioned first difference is located in zone of reasonableness, if it is, into step S151, otherwise entering
Step S152;
The zone of reasonableness of the first difference can determine that it is known quantity according to the operating mode of electromotor, proportioning of fuel etc., if
First difference is located in zone of reasonableness, then it represents that the acquisition of combustion parameter and the utilization of interpolation method formula reach precision will
Ask, otherwise i.e. aforesaid operating process has excessive error, needs to be corrected.
S151, the prediction combustion parameter values that desired fuel is calculated according to interpolation method formula;
The desired fuel is arbitrary alcohol fuel of the proportioning between E22 and E100, is now only obtained by calculating
The combustion parameter of the desired fuel, and need not repeat to obtain combustion parameter using debugging apparatus.
S152, interpolation method formula is corrected, subsequently into step S12.
Correction to interpolation method formula, specifically can be realized by way of only adjusting correction factor, the tune of the correction factor
Whole operating mode, proportioning of fuel according to electromotor etc., incorporates experience into acquisition.
Combustion parameter adjustment method provided in an embodiment of the present invention is burnt by obtain E22 fuel and E100 fuel first
Parameter value, interpolation calculation goes out to verify the prediction combustion parameter values of fuel, and obtains actual combustion of the verification fuel under given operating mode
Parameter value is burnt, to guarantee the accuracy of interpolation method formula, and then arbitrary combustion of the fuel ratio between E22 and E100 is accurately drawn
The combustion parameter of material, and then ensure the combustibility of electromotor.
Further, as shown in Fig. 2 " interpolation method formula is corrected " in above-mentioned steps S152 specifically include it is following
Step:
The second combustion parameter values of S200, acquisition E22 fuel and E100 fuel under given operating mode;
The second difference between S210, the second combustion parameter values of calculating and the first combustion parameter values;
S220, judge that whether the second difference is located in zone of reasonableness, if it is, into step S231, otherwise into step
S232;
S231, adjustment correction factor;
S232, by interpolation method formula, the first combustion parameter values of E22 fuel and E100 fuel replace with the second burning ginseng
Numerical value.
This trimming process reacquires first the second combustion parameter values of E22 fuel and E100 fuel under given operating mode,
So that the same combustion parameter of E22 fuel and E100 fuel has two test values, if the gap between this two test values
Less, then prove the acquisition Process Precision of combustion parameter enough, otherwise illustrate during the acquisition of twice combustion parameter at least
The precision of one is inadequate, then the numerical value that second obtains can be substituted for final numerical value and be calculated, until obtaining
The Process Precision of combustion parameter numerical value is enough.And the acquisition Process Precision of combustion parameter it is enough when, then illustrate interpolation method formula in
Correction factor there is larger error, now adjust correction factor after debugged again.Obviously, above steps is exchanged
The error problem that examination process is present compares sufficiently consideration, and then improves the precision of adjustment method.
In order to improve the precision of above-mentioned combustion parameter adjustment method to a greater degree, between step S100 and step S110 also
Comprise the following steps:
S300, the first combustion parameter values of process, and the first combustion parameter values are inserted in the parameter arteries and veins spectrum of debugging apparatus, obtain
The repetition combustion parameter values of E22 fuel and E100 fuel under given operating mode are taken, is calculated and is repeated combustion parameter values and the first burning
The 3rd difference between parameter value;
For the process of the first combustion parameter values mainly carries out the arrangement of data according to the data form of debugging apparatus, the mistake
Journey and the first combustion parameter values are received in during parameter arteries and veins is composed and are possible to error occur, cause the first combustion parameter values
Impact is produced on the operation conditions of electromotor.
S310, judge that whether the 3rd difference is located in zone of reasonableness, if it is, into step S110, otherwise into step
S300。
Above steps is verified to the processing procedure of the first combustion parameter values and the input process of data, with this
The harmful effect that the process error of the first combustion parameter values is produced to engine running condition is reduced, and then reaches object defined above.
Preferably, for E60, i.e., 60% ethanol is mixed the fuel ratio of the verification fuel that the embodiment of the present invention is adopted with gasoline
Fuel obtained by conjunction, the fuel is mixed using the E22 fuel of half and the E100 fuel of half, and then is easy to debugging operations
Carrying out, so as to improve debugging efficiency.
In a kind of specific embodiment, after being debugged as combustion parameter using charging efficiency, obtain as in Figure 3-5
Data, are configured to air inlet phase and back pressure with the pressure ratio of admission pressure, to set the given operating mode of adjustment method, and then obtain
To the numerical value of the combustion parameter under the given operating mode.
The embodiment of the present invention also provides a kind of combustion parameter debugging apparatus of the electromotor of employing alcohol fuel, and it is applied to
Combustion parameter adjustment method described by any of the above-described technical scheme, including:
Parameter acquiring unit, for obtaining the first combustion parameter values of E22 fuel and E100 fuel under given operating mode, with
And Actual combustion parameter value of the verification fuel under given operating mode;
Computing unit, for using interpolation method formula calculate verification fuel prediction combustion parameter values and desired fuel it is pre-
The first difference surveyed between combustion parameter values, and prediction combustion parameter values and Actual combustion parameter value, verification fuel is fuel
Fuel of the proportioning between E22 and E100, interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:Underlying parameter is the first of E22 fuel
Combustion parameter values, side-play amount is the difference between first combustion parameter values and the first combustion parameter values of E22 fuel of E100 fuel
Value, correction factor is the known coefficient obtained according to ethanol content;
Judging unit, for judging whether the first difference is located in zone of reasonableness;
Correction unit, is corrected during for outside being located at zone of reasonableness in the first difference to interpolation method formula;
Computing unit calculates the prediction combustion parameter values of desired fuel when the first difference is located in zone of reasonableness.
Because above-mentioned combustion parameter adjustment method has above-mentioned technique effect, the combustion of the combustion parameter adjustment method is applied to
Burning parameter testing device should also have corresponding technique effect, and here is omitted.
Some one exemplary embodiments of the present invention are only described by way of explanation above, undoubtedly, for ability
The those of ordinary skill in domain, in the case of without departing from the spirit and scope of the present invention, can with a variety of modes to institute
The embodiment of description is modified.Therefore, above-mentioned accompanying drawing and description are inherently illustrative, should not be construed as to the present invention
The restriction of claims.
Claims (5)
1. a kind of combustion parameter adjustment method of the electromotor of employing alcohol fuel, it is characterised in that comprise the following steps:
The first combustion parameter values of S11, acquisition E22 fuel and E100 fuel under given operating mode;
S12, the prediction combustion parameter values that verification fuel is calculated using interpolation method formula, the verification fuel is existed for fuel ratio
Fuel between E22 and E100, the interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:The underlying parameter is the E22 fuel
First combustion parameter values, the side-play amount is first combustion parameter values and the E22 fuel of the E100 fuel
First combustion parameter values between difference, the correction factor is the known coefficient obtained according to ethanol content;
The Actual combustion parameter value of S13, the acquisition verification fuel under given operating mode;
The first difference between S14, the calculating prediction combustion parameter values and the Actual combustion parameter value;
S15, judge that whether first difference is located in zone of reasonableness, if it is, into step S16, otherwise into step
S17;
S16, the prediction combustion parameter values that desired fuel is calculated according to the interpolation method formula;
S17, the interpolation method formula is corrected, subsequently into step S12;In step S17 " to the interpolation method
Formula is corrected " specifically include following steps:
Obtain the second combustion parameter values of the E22 fuel and the E100 fuel under given operating mode;
Calculate the second difference between second combustion parameter values and first combustion parameter values;
When second difference is located in zone of reasonableness, the correction factor is adjusted;When second difference is located at reasonable model
When outside enclosing, by the interpolation method formula, first combustion parameter values of the E22 fuel and the E100 fuel are replaced
For second combustion parameter values;
First combustion parameter values and the second combustion parameter values are obtained by experiment.
2. combustion parameter adjustment method according to claim 1, it is characterised in that step S11 and step S12
Between it is further comprising the steps of:
S21, process first combustion parameter values, and first combustion parameter values are inserted into the parameter arteries and veins spectrum of debugging apparatus
In, the repetition combustion parameter values of the E22 fuel and the E100 fuel under given operating mode are obtained, calculate the repetition and burn
The 3rd difference between parameter value and first combustion parameter values;
S22, when judging that whether the 3rd difference is located in zone of reasonableness, if it is, into step S12;Otherwise, into step
S21。
3. combustion parameter adjustment method according to claim 1, it is characterised in that the fuel ratio of the verification fuel is
E60。
4. the combustion parameter adjustment method according to any one of claim 1-3, it is characterised in that the combustion parameter is adjusted
Method for testing is applied to the debugging of the angle of ignition, air-fuel ratio, charging efficiency and inlet exhaust gas temperature.
5. a kind of combustion parameter debugging apparatus of the electromotor of employing alcohol fuel, are applied to described in any one of claim 1-3
Combustion parameter adjustment method, it is characterised in that include:
Parameter acquiring unit, for obtaining the first combustion parameter values of E22 fuel and E100 fuel under given operating mode, and school
Test Actual combustion parameter value of the fuel under given operating mode;
Computing unit, for using interpolation method formula calculate it is described verification fuel prediction combustion parameter values and desired fuel it is pre-
The first difference surveyed between combustion parameter values, and the prediction combustion parameter values and the Actual combustion parameter value, the school
It is fuel of the fuel ratio between E22 and E100 to test fuel, and the interpolation method formula is:
Prediction combustion parameter values=underlying parameter+side-play amount * correction factor, wherein:The underlying parameter is the E22 fuel
First combustion parameter values, the side-play amount is first combustion parameter values and the E22 fuel of the E100 fuel
First combustion parameter values between difference, the correction factor is the known coefficient obtained according to ethanol content;
Judging unit, for judging whether first difference is located in zone of reasonableness;
Correction unit, is corrected during for outside being located at zone of reasonableness in first difference to the interpolation method formula;
The computing unit calculates the prediction combustion parameter of the desired fuel when first difference is located in zone of reasonableness
Value;
The correction unit is specifically for obtaining the second burning ginseng of the E22 fuel and the E100 fuel under given operating mode
Numerical value;Calculate the second difference between second combustion parameter values and first combustion parameter values;When second difference
When in zone of reasonableness, the correction factor is adjusted;When outside second difference is located at zone of reasonableness, by the interpolation
First combustion parameter values of E22 fuel described in method formula and the E100 fuel replace with second combustion parameter
Value, first combustion parameter values and the second combustion parameter values are obtained by experiment.
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CN201410853872.2A CN104712447B (en) | 2014-12-31 | 2014-12-31 | Combustion parameter adjusting method and device for engine using ethanol fuel |
PCT/CN2015/075710 WO2016106992A1 (en) | 2014-12-31 | 2015-04-01 | Combustion parameter adjusting method and device for engine using ethanol fuel |
BR112017014305-4A BR112017014305A2 (en) | 2014-12-31 | 2015-04-01 | combustion parameters adjustment method and engine device using ethanol fuel. |
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