CN106611067A - Oil product self-learning value correction method for EMS system - Google Patents
Oil product self-learning value correction method for EMS system Download PDFInfo
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Abstract
The invention discloses an oil product self-learning value correction method for an EMS system. The oil product self-learning value correction method comprises the steps of determining whether the EMS system satisfies an oil product self-learning value correction condition or not, if the correction condition is satisfied, performing oil product self-learning value correction, and taking the oil product self-learning value obtained by correction as an accurate oil product self-learning value; and if a correction stopping condition is satisfied, stopping the correction of the oil product self-learning value, and taking the latest oil product self-learning value obtained before correction stopping as a final oil product self-learning value. By virtue of the oil product self-learning value correction method for the EMS system disclosed by the invention, the oil product self-learning value is changed actively only under an overhigh engine exhaust temperature condition, so that conditions of lowering of working efficiency and even burn down of parts caused by insufficiency/excess of engine fuel-injection quantity due to wrong oil product recognition of the EMS system can be avoided.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of modification method of EMS system oil product self study value (send out by automobile
Motivation management system, Engine Management System)
Background technology
In there is no the engine management system of ethanol sensor, ethanol and gasoline due to respective air-fuel ratio variation, with any
When ratio mixes, engine management system EMS is represented using the closed loop control self study value carried out by air-fuel ratio variation
Ethanol content, and the ethanol fuel oil factor is calculated, when electromotor is using different oil products, amendment oil circuit and fiery road calculate.
There is the new mixed process for adding oil product and original oil product when different alcohols oil products are added in flexible fuel vehicles；For example, it is former
There is oil product to be that E0 fuel oils exhaust soon, it is new to add oil product to be E85 fuel oils.The new mixed process for adding oil product and original oil product
It is as follows：Electromotor starts (E0 is oily) → oily rail and oil pipe oil (E0 is oily) → oil product mixing (E85 is oily) → mixing terminates
(E85 is oily).
During above-mentioned changing oil, it is even longer that the Residual oil in oily rail and oil pipe changes thoroughly probably 15～600s of needs completely
Time, this depends on rear vehicle running status of changing oil.In oil product mixing Renewal process, fuel oil self study value is in gradually
Process is set up, once fuel oil self study value self study condition is exited, and it is such as anxious to accelerate, then actual oil rail burning can be caused
Fuel oil and EMS system in the fuel oil that recognizes it is inconsistent, most may extremely produce following two situations：
If the 1, vehicle-mounted original oil product E0 exhausts, the new oil product E85 of supplement.Starting electromotor after the new oil product of supplement gradually increases
To peak power；The condition of this process oil product self study value is unsatisfactory for, and oil product self study value is mainly fired to engine steady state
Dense dilute compensation after burning, EMS system can carry out oil product self study value identification oil product with the fuel oil E0 self study values before acceleration, be
One with the not corresponding self studies of current oil product E85, and control the distributive value of engine fuel injector, cause distributive value not enough
Situation, reduce electromotor work efficiency.
2nd, reverse situation, if vehicle-mounted original oil product E85 exhausts, the new oil product E0 of supplement.Start after the new oil product of supplement and start
Machine is gradually increased to peak power；Now the learning process of process oil product self study value can be interrupted, and EMS system can be with E85
Self study value carrys out oil product self study value identification oil product, not corresponding with current oil product E0, and controls the spray of engine fuel injector
Oil mass, the situation for causing distributive value excessive reduce the work efficiency of electromotor.
The occurrence of both the above, not only cause what is driven to have some setbacks, reduce engine operating efficiency, it is also possible to send out
Hair growth promoting motivation row's temperature is too high to cause engine component to burn out.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind enables flexible fuel vehicles accurate when different alcohols oil products are added
The EMS system oil product self study value correction method of oil product self study value is obtained really.Avoid as the identification of EMS system oil product is wrong
Producing Engine Injection Mass deficiency/excessive caused engine operating efficiency by mistake reduces, or even the situation that parts burn out.
To solve above-mentioned technical problem, the EMS system oil product self study value correction method that the present invention is provided, including following step
Suddenly：
Judge whether EMS system meets oil product self study value correction conditions, oil product is carried out if the correction conditions are met certainly
Learning value amendment；If meeting stopping correction conditions, stop amendment oil product self study value, and finally obtain before amendment being stopped
The oil product self study value for obtaining is used as accurate oil product self study value；
The amendment of oil product self study value is adopted:X=Y × Z
Filter constant Z is two-dimensional diagram, is determined according to air input of engine by air, and abscissa is engine charge air quality,
Vertical coordinate is one group of corresponding constant of engine air air mass；
X is oil product self study value after amendment, and Y is the oil product self study value for giving current EMS system；
The correction conditions are at least while to meet following condition:
1) (B-A) ＜ T, A are oil product self study value before refueling, and B is oil product self study value after refueling, and T is default oil
Product self study value threshold value；The scope of T is 1～1.5, and preferred value is 1.25.Oil product self study before and after oiling is differed not
Greatly, less than a default oil product self study value threshold values, such case Producing reason has two kinds of possibility：One kind is institute twice
Less, one kind is that oil product self study is not started to oil oil product difference.For the first is sensed because of no ethanol
Itself and second situation are considered solution by device, the present invention in the lump, used as the condition for carrying out the reparation of oil product self study value.
2) fuel tank level sensor output fault-signal；
When fuel tank level sensor exports fault-signal, i.e., oil mass in fuel tank cannot be really reacted, directly carry out oil product certainly
Learning value amendment.
3) Rule of judgmentSet up,
Wherein, C is the volume of fuel tank residue oil product, and D is the ethanol content of fuel tank residue oil product, and E is newly to add oil product
Volume, F are the ethanol content for newly adding oil product, and to preset oil volume change threshold values, oil volume changes threshold values G to G
Scope be 1～1.5 between, preferred value is 1.25；
The meaning of the correction conditions is that the original oil product of fuel tank is contrasted with threshold values with the content of ethanol after fresh oil is added, and works as mixing
If the amount of alcohol of fuel oil is close with the fuel oil ethanol content of original oil product in fuel tank afterwards, oil product self study value is not repaiied
Just, conversely, differing larger with the fuel oil ethanol content of original oil product, burning is had an impact, then will carries out oil product self study
Value amendment.
4) in more than 4600 turns of high rotating speed, engine load is operated above electromotor for 112%；
If fuel oil self study is inaccurate, substantially it is not that all operating modes of electromotor can all occur to arrange the too high situation of temperature, should
Correction conditions setting operating mode is that an engine speed load range avoids the occurrence of error correction.
5) gear is in more than 3 grades；
6) engine water temperature is more than or equal to 80 degrees Celsius.
The stopping correction conditions at least including one of, that is, following any one operating mode occur and exit amendment：：
A. arbitrary correction conditions are unsatisfactory for；
B. obtain oil product self study value X after amendment more than twice.
C. engine start run time stops amendment oil product self study value more than predetermined threshold value, and the predetermined threshold value is
15S-600S.After engine start is more than the 15S-600S seconds, (the startup optimization time is according to engine types difference
Change), add the mixing of oil product and remaining oil product to complete, oil product self study value is necessarily in a stable state,
Therefore oil product self study value amendment need not be carried out.
The present invention only considers the situation that petrol station is refueled, and after gas station refuels, high-speed high-load operating mode just occurs, at this moment sends out
Motivation water temperature before oiling is affirmed in heat engine, therefore can produce engine water temperature change, judges whether to oil product with this
Self study value amendment.When flexible fuel is demarcated, EMS can be avoided well using different oil product self study value calculating methods
When system differs larger situation with actual oil product according to oil product self study value acquisition oil product after oiling.But it is extreme at some
Under operating mode, EMS system cannot accurately obtain oil product according to oil product self study value calculating method.Obtaining the inaccurate feelings of oil product
The too high risk for burning parts of engine exhaust temperature is likely to result under condition.
The comparison that correction conditions are arranged by the EMS system oil product self study value correction method of the present invention is harsh, starts in generation
Just go actively to change oil product self study value under the too high operating mode of machine row's temperature, be avoided that
Raw Engine Injection Mass is not enough/excessive caused engine operating efficiency reduction, or even the situation that parts burn out.
Description of the drawings
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the schematic flow sheet of the present invention.
Specific embodiment
One embodiment of EMS system oil product self study value correction method that the present invention is provided, comprises the following steps：
Judge whether EMS system meets oil product self study value correction conditions, oil product is carried out if the correction conditions are met certainly
Learning value amendment；If meeting stopping correction conditions, stop amendment oil product self study value, and finally obtain before amendment being stopped
The oil product self study value for obtaining is used as accurate oil product self study value；
Filter constant Z is two-dimensional diagram, is determined according to air input of engine by air, and abscissa is engine charge air quality,
Vertical coordinate is one group of corresponding constant of engine air air mass；
X is oil product self study value after amendment, and Y is the oil product self study value for giving current EMS system.
The correction conditions at least include：
1) (B-A) ＜ T, A are oil product self study value before refueling, and B is oil product self study value after refueling, and T is default oil
Product self study value threshold value；From between 1～1.5, preferred value is 1.25 to the scope of T.Oil product self study phase before and after oiling
Difference is little, and less than a default oil product self study value threshold values, such case Producing reason has two kinds of possibility：One kind is two
Less, one kind is that oil product self study is not started to secondary institute's oil oil product difference.For the first is because of no ethanol
Itself and second situation are considered solution by sensor, the present invention in the lump, used as the bar for carrying out the reparation of oil product self study value
Part.
2) fuel tank level sensor output fault-signal；
When fuel tank level sensor exports fault-signal, i.e., oil mass in fuel tank cannot be really reacted, directly carry out oil product certainly
Learning value amendment.
3) Rule of judgmentSet up,
Wherein, C is the volume of fuel tank residue oil product, and D is the ethanol content of fuel tank residue oil product, and E is newly to add oil product
Volume, F are the ethanol content for newly adding oil product, and to preset oil volume change threshold values, oil volume changes threshold values G to G
Scope be 1～1.5 between, preferred value is 1.25；
The meaning of the correction conditions is that the original oil product of fuel tank is contrasted with threshold values with the content of ethanol after fresh oil is added, and works as mixing
If the amount of alcohol of fuel oil is close with the fuel oil ethanol content of original oil product in fuel tank afterwards, oil product self study value is not repaiied
Just, conversely, differing larger with the fuel oil ethanol content of original oil product, burning is had an impact, then will carries out oil product self study
Value amendment.
4) in more than 4600 turns of high rotating speed, engine load is carried out electromotor for more than 112%；
If fuel oil self study is inaccurate, substantially it is not that all operating modes of electromotor can all occur to arrange the too high situation of temperature, should
Correction conditions setting operating mode is that an engine speed load range avoids the occurrence of error correction.
5) gear is in more than 3 grades；
6) engine water temperature is more than or equal to 80 degrees Celsius.
Wherein, the stopping correction conditions at least including one of, that is, following any one operating mode occur and exit amendment：
A. arbitrary correction conditions are unsatisfactory for；
B. obtain oil product self study value X after amendment more than twice.
C. engine start run time stops amendment oil product self study value more than predetermined threshold value, and the predetermined threshold value is
15S-600S.After engine start is more than the 15S-600S seconds, (the startup optimization time is according to engine types difference
Change.
The present invention has been described in detail above by specific embodiment and embodiment, but these not constitute it is right
The restriction of the present invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations
And improvement, these also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of EMS system oil product self study value correction method, is characterized in that, comprise the following steps：
Judge whether EMS system meets oil product self study value correction conditions, oil product is carried out if the correction conditions are met certainly
Learning value amendment；If meeting stopping correction conditions, stop amendment oil product self study value, and finally obtain before amendment being stopped
The oil product self study value for obtaining is used as accurate oil product self study value；
The amendment of oil product self study value is adopted:X=Y × Z
Filter constant Z is two-dimensional diagram, is determined according to air input of engine by air, and abscissa is engine charge air quality,
Vertical coordinate is one group of corresponding constant of engine air air mass；
X is oil product self study value after amendment, and Y is the oil product self study value for giving current EMS system.
2. EMS system oil product self study value correction method as claimed in claim 1, is characterized in that：The correction conditions are
At least while meet following condition:
1) (B-A) ＜ T, A are oil product self study value before refueling, and B is oil product self study value after refueling, and T is default oil
Product self study value threshold value；
2) fuel tank level sensor output fault-signal；
3) Rule of judgment Set up,
Wherein, C is the volume of fuel tank residue oil product, and D is the ethanol content of fuel tank residue oil product, and E is newly to add oil product
Volume, F are the ethanol content for newly adding oil product, and G is default oil volume change threshold values；
4) in more than 4600 turns of high rotating speed, engine load is carried out electromotor for more than 112%；
5) gear is in more than 3 grades；
6) engine water temperature is more than or equal to 80 degrees Celsius.
3. EMS system oil product self study value correction method as claimed in claim 1, is characterized in that：It is described to stop amendment bar
Part at least includes one of：
A. arbitrary correction conditions are unsatisfactory for；
B. obtain oil product self study value X after amendment more than twice.
4. EMS system oil product self study value correction method as claimed in claim 3, is characterized in that：It is described to stop amendment bar
Part also includes：
C. engine start run time then stops correcting oil product self study value more than preset time threshold.
5. EMS system oil product self study value correction method as claimed in claim 3, is characterized in that：The time presets threshold
It is worth for 15S-600S.
6. EMS system oil product self study value correction method as claimed in claim 2, is characterized in that：Oil product self study value threshold
Value T is 1～1.5, and oil volume change threshold values G scopes are 1～1.5.
7. EMS system oil product self study value correction method as claimed in claim 6, is characterized in that：Oil product self study value threshold
Value T is 1.25.
8. EMS system oil product self study value correction method as claimed in claim 6, is characterized in that：Oil volume changes valve
Value G is 1.25.
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| CN201510695660.0A CN106611067B (en) | 2015-10-23 | 2015-10-23 | Method for correcting self-learning value of oil product of EMS system |
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| CN201510695660.0A CN106611067B (en) | 2015-10-23 | 2015-10-23 | Method for correcting self-learning value of oil product of EMS system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373036C (en) * | 2003-02-13 | 2008-03-05 | 日产自动车株式会社 | Fuel performance estimation for internal combustion engine |
| CN101302965A (en) * | 2006-05-08 | 2008-11-12 | 玛涅蒂玛瑞利动力系公开有限公司 | Method for recognizing a fuel type in a diesel engine |
| US20090177370A1 (en) * | 2007-12-25 | 2009-07-09 | Koji Kawakita | Estimation apparatus of alcohol component amount in fuel |
| CN102877971A (en) * | 2012-09-29 | 2013-01-16 | 安徽江淮汽车股份有限公司 | Alcohol fuel alcohol content detection method and module |
| CN104481716A (en) * | 2014-11-17 | 2015-04-01 | 安徽江淮汽车股份有限公司 | Ethyl alcohol flexible fuel engine fuel injection quantity control method and system |
-
2015
- 2015-10-23 CN CN201510695660.0A patent/CN106611067B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373036C (en) * | 2003-02-13 | 2008-03-05 | 日产自动车株式会社 | Fuel performance estimation for internal combustion engine |
| CN101302965A (en) * | 2006-05-08 | 2008-11-12 | 玛涅蒂玛瑞利动力系公开有限公司 | Method for recognizing a fuel type in a diesel engine |
| US20090177370A1 (en) * | 2007-12-25 | 2009-07-09 | Koji Kawakita | Estimation apparatus of alcohol component amount in fuel |
| CN102877971A (en) * | 2012-09-29 | 2013-01-16 | 安徽江淮汽车股份有限公司 | Alcohol fuel alcohol content detection method and module |
| CN104481716A (en) * | 2014-11-17 | 2015-04-01 | 安徽江淮汽车股份有限公司 | Ethyl alcohol flexible fuel engine fuel injection quantity control method and system |
Non-Patent Citations (2)
| Title |
|---|
| 孟武强等: "基于UEGO传感器的空燃比自学习控制策略研究", 《车用发动机》 * |
| 程远超: "灵活燃料汽车应用进展报告", 《创新科技》 * |
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