CN105736163B - Judge the processing method and system of different biodiesel ratios - Google Patents
Judge the processing method and system of different biodiesel ratios Download PDFInfo
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Abstract
The present invention discloses a kind of processing method and system judging different biodiesel ratios, a nitrogen oxides sensor is set on the vehicle that mainly there is vehicle computer in one, it provides information to vehicle computer and is handled to detect a variety of different biodiesels and can obtain relevant information；It is that a variety of different biodiesels are detected by the nitrogen oxides sensor before vehicle not yet dispatches from the factory, so that vehicle computer is by engine test and different nitrogen oxides ratio built in advance and stores more than one proportionate relationship data, when vehicle release and the different biodiesel of use, then according to the state of engine and the strategy of the type of biodiesel adjustment engine oil spout；Judge different biodiesel ratios by above system and adjust engine Injection strategy accordingly, simultaneous can save energy subtracts carbon again to achieve the purpose that be promoted engine performance.
Description
Technical field
The present invention relates to a kind of judgement bavin oil treatment process and system more particularly to a kind of different biodiesel ratios of judgement
The processing method and system of example.
Background technology
With the development of science and technology Transportation Industry flourishes, either government unit or private enterprise is in vehicle
It does one's utmost in the correlative study of power, usual development projects includes：One, carbon reduction, i.e. low stain and low energy consumption；Two,
Expand new energy and energy saving science and technology.For the project of current carbon reduction, the quite ripe vehicle technology of existing development, and
The use of electric vehicle has the advantages that low stain and low energy consumption really, but vehicle technology is still unfortunately, is limited
In performance battery technology of engine and electric vehicle not as good as of generator module makes its cruising ability limited the problems such as；
And in the project of growth and expansion new energy and energy saving science and technology, can more meet engine performance and carbon reduction for current technology
Demand.
It is existing at present to use the correlative study of the control technology of biodiesel, the physics and chemistry of biodiesel for engine
Property is very close with fossil diesel fuel, and can be directly used in mixed way with fossil diesel fuel, and mixed ratio can give birth to matter from B2
Diesel oil (addition 2% biodiesel) even B100 biodiesels, with biodiesel compared to fossil diesel fuel for, biodiesel
, calorific value more low characteristic higher with oxygen content, if at high proportion with fossil diesel fuel mix in application, can due to above-mentioned characteristic shadow
Ring engine performance, but when biodiesel ratio is higher then discharge pollutants it is also fewer, due to biodiesel have subtract carbon with point
The benefit of energy sink, it has also become the trend and trend that the raw mass-energy in the whole world pushes at present, and Countries push biodiesel policy
When, not Compulsory Feature vehicle unifies the biodiesel using same ratio comprehensively, therefore may simultaneously be sold not in market
With the biodiesel of mixed proportion.
With existing judgement biodiesel ratio and carries out engine control adjustment technology and include：1. using cylinder pressure force value into
Row analysis, this technology must be measured using cylinder pressure sensor, and it is expensive；2. being calculated using distributive value, general diesel oil
The distributive value adjustment of engine is first controlled according to the preset value of torque rotating speed map (Torque-Speed Map), then with it
Distributive value is corrected parameter, but actually its control logic is sufficiently complex, and manufacturing cost is higher and not easy care；3. to measure
Relative permittivity value is calculated, but the special dielectric constant sensor of the vehicle that still cost free is low currently on the market, efficiency is good；
For another example " the side of the biodiesel hybrid detection based on the assessment of fuel post injection amount of Chinese patent CN102787924
Method " (case before hereinafter referred to as), discloses a kind of method for the mixed proportion detecting the bio-fuel in internal combustion engine, and this method includes
Following steps：At least two post injection fuel quantity reference points are set, to be respectively used to known biodiesel compound percentages ratio
Example；Assess the value of post injection fuel quantity；By the ginseng of the value of the post injection fuel quantity and at least two post injection fuel quantity
It is compared according to value；Using expressed by the value of post injection fuel quantity and the percentage by biodiesel relative to petrifaction diesel
One group of scheduled correlation between biodiesel mixed proportion, to determine biodiesel mixed proportion.
By the above-mentioned prior art it is found that biodiesel and fossil diesel fuel mix in application, can be because of biodiesel characteristic, ratio
Difference and influence engine performance, such as：In assessment B2 biodiesels engine, the stable state (Steady- of B100 biodiesel engines
State) when performance, if all using same biodiesel fuel, it can so that the engine using B100 biodiesels is flat in rotating speed
When about 1800rpm, horsepower declines about 6.9% instead.Therefore there are the more high then engine performances of biodiesel ratio for the prior art
The problem of decline；And though preceding case judges biodiesel ratio using distributive value after engine, and according to being sprayed after fuel characteristic difference
Amount also can be different to judge biodiesel ratio, but preceding case is to obtain accurate distributive value to carry out complicated logic control
System, is just able to precisely extrapolate correct biodiesel ratio so that the manufacturing cost height of this mode and not easy care；Therefore,
The prior art needs to be proposed the necessity of more preferably evolutionary approach really.
Invention content
In view of above-mentioned the deficiencies in the prior art, present invention is primarily aimed at a kind of different biodiesel ratios of judgement of offer
The processing method and system of example, by the sample for establishing various biodiesel ratios in vehicle computer with efficient mode
Data so that the vehicle after manufacture only needs the plan for the adjust automatically engine oil spout that the related readings according to biodiesel can be instant
Slightly, engine performance, carbon reduction are promoted in a manner of inexpensive, efficient.
The technical way taken to reach above-mentioned purpose, which is to provide, a kind of judging different biodiesel ratios
Processing method is mainly connect with a nitrogen oxides sensor by a vehicle computer, and executes the following steps by the vehicle computer：
When executing an operation mode：
According to different nitrogen oxides ratios, more than one proportionate relationship data are pre-established；
When executing a driving mode：
Obtain more than one status information and a nitrogen oxides information；
According to the status information and the proportionate relationship of the nitrogen oxides information, a concentration information is generated；
It is compared with the proportionate relationship data pre-established using the concentration information, and executes one according to comparison result and adjust
Whole engine Injection strategy.
That the nitrogen oxides sensor is connected with the vehicle computer in preceding method, the nitrogen oxides sensor to
A variety of different biodiesels are detected to obtain relevant information, when vehicle is in preceding implement either operational mode of not dispatching from the factory so that this is automobile-used
Computer detects different nitrogen oxides ratios according to nitrogen oxides sensor, pre-establishes more than one proportionate relationship number
According to, therefore after vehicle release, when using different biodiesels, the vehicle computer is then according to the state letter obtained immediately
Breath, the nitrogen oxides information proportionate relationship and generate corresponding concentration information, and using the concentration information and vehicle in not
The proportionate relationship data pre-established before manufacture are compared, and the adjustment engine Injection strategy is executed further in accordance with comparison result,
Achieve the purpose that promote engine performance in a manner of inexpensive, efficient and simultaneous can save energy subtracts carbon.
The another technical way taken to reach above-mentioned purpose, which is to provide, a kind of judging different biodiesel ratios
Example processing system include：
One nitrogen oxides sensor, to detect biodiesel and obtain a nitrogen oxides information；
One vehicle computer is connect with the nitrogen oxides sensor, and the vehicle computer is more than one with pre-establishing
Proportionate relationship data, the proportionate relationship data include biodiesel information, the nitrogen oxides information of most different proportions；
Wherein, which receives the nitrogen oxides information by the nitrogen oxides sensor and the vehicle computer connects
More than one status information is received, and the status information and the nitrogen oxides information are subjected to the calculating with proportionate relationship
Formula is compared according to the concentration information with the proportionate relationship data pre-established with generating a concentration information by the vehicle computer
It is right, to judge the ratio of biodiesel, and an adjustment engine Injection strategy is executed according to judging result.
By above-mentioned construction it is found that the present invention judges the processing system of different biodiesel ratios mainly by the nitrogen oxides
Sensor detects biodiesel and obtains relevant nitrogen oxides information, and those information are supplied at the vehicle computer
Reason, and a variety of different biodiesels are detected by the nitrogen oxides sensor before vehicle not yet dispatches from the factory so that vehicle
By engine test and different nitrogen oxides ratio built in advance and proportionate relationship data are stored with computer, in the proportionate relationship data
Biodiesel information, nitrogen oxides information including most different proportions, when vehicle release and the different biodiesel of use,
The vehicle computer also receives the status information of vehicle and receives its nitrogen oxides information by the nitrogen oxides sensor, and will
The status information carries out having the calculating formula of proportionate relationship to generate the concentration information with the nitrogen oxides information, then automobile-used by this
Computer is compared according to the concentration information with the proportionate relationship data pre-established, to judge the ratio of biodiesel, and
Adjustment engine Injection strategy is executed according to judging result, therefore can reach promotion engine performance in a manner of inexpensive, efficient
It is again simultaneous to can save energy the purpose for subtracting carbon.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Description of the drawings
The system block diagram of Fig. 1 a preferred embodiment of the present invention；
The application state schematic diagram of Fig. 2 a preferred embodiment of the present invention；
The proportionate relationship data graphs of Fig. 3 a preferred embodiment of the present invention；
The process flow figure of Fig. 4 a preferred embodiment of the present invention.
Wherein, reference numeral
10 vehicle computer, 11 processor
12 mnemon, 13 signal input port
20 nitrogen oxides sensors
30 engine modules
40 Throttle Opening Control modules
50,60 biodiesels
Specific implementation mode
A preferred embodiment of the processing system of different biodiesel ratios is judged about the present invention, refering to Figure 1,
It includes a vehicle computer 10, a nitrogen oxides sensor 20, which connect with the nitrogen oxides sensor 20, should
Nitrogen oxides sensor 20 is detecting the biodiesel of different proportion and obtain a nitrogen oxides information respectively；The nitrogen oxidation
Object (Nitrogen Oxides, NOx) refers to the compound being made of two kinds of nitrogen, oxygen elements.
In the present embodiment, which includes a processor 11, a mnemon 12 and a signal input port
13, which connect with the mnemon 12, the signal input port 13 respectively, the signal input port 13 and the nitrogen oxygen
Compound sensor 20 connects, which detects different ratio biodiesels, and by the nitrogen oxides of acquirement
Information is sent to the processor 11 by the signal input port 13 of the vehicle computer 10 and is handled.
The processor 11 of the vehicle computer 10 detects different nitrogen oxides according to the nitrogen oxides sensor 20 is received
Information, pre-establishes more than one proportionate relationship data, and by the proportionate relationship data storage the vehicle computer 10 note
Recall in unit 12, includes biodiesel information, the nitrogen oxides information of most different proportions in the proportionate relationship data；
After the proportionate relationship data pre-established have been stored in vehicle computer 10, if reusing the life matter of different proportion
Diesel oil, it is only necessary to more than one status information be obtained by the processor 11 of the vehicle computer 10 and by the nitrogen oxides sensor
20 obtain a nitrogen oxides information, then the status information and the nitrogen oxides information are carried out the calculating with proportionate relationship
Formula generates a concentration information according to the proportionate relationship of the status information and the nitrogen oxides information, and the processor 11 is according to this
Concentration information is compared with the proportionate relationship data pre-established, to judge the ratio of biodiesel immediately, and according to sentencing
Disconnected result is efficient to execute an adjustment engine Injection strategy, therefore can reach promotion engine in a manner of inexpensive, efficient
Performance has both the purpose of carbon reduction again.
To illustrate the concrete application mode of this preferred embodiment, please refer to shown in Fig. 2, including depot's stage, one
Vehicle release stage, the depot refer to a vehicle in the stage before not yet dispatching from the factory, and an operation mode test is carried out for each project
(such as engine test), the vehicle release stage refer to that the vehicle finishes after tested, can execute a driving mode by common people and (such as exist
Driven on Ordinary Rd and voluntarily to gas station's oiling), in the present embodiment, the vehicle computer 10 and the nitrogen oxides sensor
20 are set on the vehicle, the vehicle have an engine modules 30, a Throttle Opening Control module 40, the vehicle computer 10 respectively with this
Engine modules 30, the Throttle Opening Control module 40 connection, the vehicle computer 10 can receive the status information of the engine modules 30 respectively
And the status information of the Throttle Opening Control module 40, the status information of the engine modules 30 includes a rotary speed information, a load letter
The status information of breath, the Throttle Opening Control module 40 includes a throttle opening information；
When the vehicle not yet dispatch from the factory and in depot's stage carry out operation mode when, which passes through the nitrogen oxides
Sensor 20 is detected the biodiesel 50 of a variety of different proportions, the biodiesel 50 of a variety of different proportions in the present embodiment
Including D100 (B0), B20, B40, B60, B80, B100 so that the processor 11 of vehicle computer 10 can pass through engine speed, throttle
Aperture and load etc. are tested and different nitrogen oxides ratios pre-establishes aforementioned proportion relation data and is stored in the vehicle electric
In the mnemon 12 of brain 10, which includes the biodiesel information of most different proportions, nitrogen oxides letter
Breath；
When the vehicle has been in the manufacture stage and executes driving mode by driver, vehicle is travelled to gas station and is added
After the biodiesel 60 of a certain ratio, vehicle launch and when driving, the vehicle computer 10 then receives the state letter of the vehicle
It ceases and its nitrogen oxides information is received by the nitrogen oxides sensor 20, and capture the status information (such as rotating speed and load)
Have the calculating formula of proportionate relationship with the nitrogen oxides information to generate the concentration information, in the present embodiment, the vehicle electric
10 fechtable fixed load of brain or accelerator open degree carry out average (such as 10 NOx nitrogen oxygen with more nitrogen oxides information under rotating speed
Compound information), then by the vehicle computer 10 processor 11 according to the concentration information and the proportionate relationship data that pre-establish into
Row compares, through bringing the above-mentioned calculating formula with proportionate relationship into judge the ratio of biodiesel, and according to judging result by
The processor 11 of the vehicle computer 10 sends a fuel injector control signal to the engine modules 30, with enforcement engine fuel injection control strategy
Adjustment (such as adjustment injection timing and distributive value), and further by the processor 11 of the vehicle computer 10 to the engine modules
30 persistently send an operating control signal, to enable engine reach optimized running effect, after flame-out closing engine and reply
Genuine is set, therefore is had the advantages that inexpensive, efficient and can be achieved the purpose that simultaneous can save energy subtracts carbon to promotion engine performance again.
Mode is established for illustrate proportionate relationship data and calculating formula, is please referred to shown in Fig. 3, including a level
Axis and a vertical axis, the trunnion axis be above-mentioned a variety of different proportions biodiesel 50, sequential B100, B80, B60,
B40, B20, B0, the vertical axis are a nitrogen oxide NOx total amount (0~700ppm), are tested by engine and in fixed rotating speed, oil
Different proportion bavin and the proportionate relationship data of NOx are established under door aperture or load, as shown in figure 3, when the vehicle is in depot's stage
When, which establishes proportionate relationship data, such as most turns according to the engine speed that the engine modules 30 most often operate
Fast information includes 1500rpm, 1800rpm, 2100rpm, which is 50%~60%, when the vehicle is in manufacture
Stage, and the vehicle computer 10 obtain the rotary speed information be 1500rpm, the throttle opening information is to be taken respectively more under 60%
Nitrogen oxides information is averaged, then carries out the calculating formula with proportionate relationship by the processor 11 of the vehicle computer 10,
To generate concentration information, which is compared with the proportionate relationship data pre-established, brings into above-mentioned with ratio pass
The calculating formula of system executes an adjustment engine Injection strategy to judge the ratio of biodiesel according to judging result.
In the present embodiment, the calculating with proportionate relationship is carried out according to above-mentioned status information, the nitrogen oxides information
Formula, the calculating formula can be a linear function y=Α x+b；Wherein, y is the concentration information of nitrogen oxide NOx, and x is the accelerator open degree
Information, when the rotary speed information is 2600rpm, throttle opening information 100%, A 8.7904, b 155.4.The calculating formula can
It is further a polynomial function y=Ax2+bx+c；Wherein, y is the concentration information of nitrogen oxide NOx, and x is the accelerator open degree
Information.When the rotary speed information is 1500rpm, throttle opening information 60%, A 1.75, b are -47.279, c 830.6；When
The rotary speed information is 1800rpm, throttle opening information 60%, and A 8.4643, b are -92.336, c 702.8；When the rotating speed
Information is 2100rpm, throttle opening information 60%, and A 9.4643, b are -99.307, c 720.2.
The different raw matter of a judgement are further provided for according to the application mode of aforementioned present invention preferred embodiment and illustration
The processing method of diesel fuel ratio, as shown in figure 4, mainly connect with the nitrogen oxides sensor 20 by the vehicle computer 10,
And the following steps are executed by the vehicle computer 10：
When vehicle executes an operation mode (S41) in depot's stage：
Different nitrogen oxides ratios is detected according to the nitrogen oxides sensor 20, is pre-established more than one ratio and is closed
Coefficient is according to (S42)；
When vehicle executes a driving mode (S51) in the vehicle release stage：
When driving in vehicle launch, which obtains one by its engine modules 30, Throttle Opening Control module 40
Above status information, and a nitrogen oxides information (S52) is obtained by the nitrogen oxides sensor 20；
According to the status information and the proportionate relationship of the nitrogen oxides information, a concentration information (S53), this implementation are generated
It is to carry out one according to the status information, the nitrogen oxides information there is the calculating formula of proportionate relationship, the calculating formula can be in example
An one linear function y=Α x+b or polynomial function y=Ax2+bx+c；Wherein, y is the concentration information of nitrogen oxide NOx, and x is
The throttle opening information；
(S54) is compared with the proportionate relationship data pre-established using the concentration information, brings into above-mentioned with ratio
The calculating formula of relationship sends an oil spout control according to comparison result to judge the ratio of biodiesel to above-mentioned engine modules 30
Signal processed is to execute an adjustment engine Injection strategy (S55)；
The engine modules 30 are persistently sent with an operating control signal by the processor 11 of the vehicle computer 10, is drawn with enabling
It holds up and operates (S56) to optimize；
After flame-out (S57) closes engine and genuine setting is replied, and returns to the step " when executing a driving mode (S51) "
Suddenly.
The present invention can adjust engine oil spout plan accordingly by the vehicle computer 10 judges different biodiesel ratios
Slightly, it can be generated corresponding according to the status information, the proportionate relationship of nitrogen oxides information that obtain immediately after vehicle release
Concentration information, and be compared with the proportionate relationship data that vehicle is pre-established before not dispatching from the factory using the concentration information,
The adjustment engine Injection strategy is executed further in accordance with comparison result, and the engine modules 30 are persistently sent by the vehicle computer 10
Operating control signal makes engine to optimize operating.
Certainly, the invention may also have other embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding change and deformations, but these corresponding changes and change in accordance with the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (6)
1. a kind of processing method judging different biodiesel ratios, mainly passes through a vehicle computer and a nitrogen oxides sensor
Connection, which is characterized in that the following steps are executed by the vehicle computer：
When executing an operation mode：
According to different nitrogen oxides ratios, more than one proportionate relationship data are pre-established；
When executing a driving mode：
More than one status information and a nitrogen oxides information are obtained, and according to the status information, the nitrogen oxides information
Carry out a linear function y=Ax+b or a polynomial function y=Ax with proportionate relationship2The calculating formula of+bx+c, wherein y
For a concentration information of the nitrogen oxide NOx, X is a throttle opening information；
According to the status information and the proportionate relationship of the nitrogen oxides information, a concentration information is generated；
It is compared, and further brought into above-mentioned with ratio pass with the proportionate relationship data pre-established using the concentration information
The calculating formula of system sends an Injection Control signal to judge the ratio of biodiesel according to a comparison result pair engine modules
To execute an adjustment engine Injection strategy.
2. the processing method according to claim 1 for judging different biodiesel ratios, which is characterized in that when this method is held
One driving mode of row, further comprises the following steps：
One operating is persistently sent to an engine modules and controls signal, operating is optimized to enable engine；
After flame-out, return to when one traveling mode step of execution.
3. a kind of processing system judging different biodiesel ratios, which is characterized in that including：
One nitrogen oxides sensor, to detect biodiesel and obtain a nitrogen oxides information；
One vehicle computer is connect with the nitrogen oxides sensor, which has the more than one ratio pre-established
Relation data, the proportionate relationship data include biodiesel information, the nitrogen oxides information of most different proportions；
Wherein, which receives the nitrogen oxides information by the nitrogen oxides sensor and the vehicle computer receives one
A above status information, and the status information and the nitrogen oxides information are subjected to a linear function with proportionate relationship
A y=Ax+b or polynomial function y=Ax2The calculating formula of+bx+c, wherein y is a concentration information of the nitrogen oxide NOx, X
For a throttle opening information；According to the status information and the proportionate relationship of the nitrogen oxides information, to generate a concentration information,
It is compared with the proportionate relationship data pre-established according to the concentration information by the vehicle computer, and further brings above-mentioned tool into
The calculating formula of proportional relationship to judge the ratio of biodiesel, and executes an adjustment engine oil spout plan according to judging result
Slightly.
4. the processing system according to claim 3 for judging different biodiesel ratios, which is characterized in that the vehicle computer
Including a processor, a mnemon and a signal input port, the processor system is defeated with the mnemon, the signal respectively
Inbound port connects, which connect with the nitrogen oxides sensor.
5. the processing system according to claim 4 for judging different biodiesel ratios, which is characterized in that the vehicle computer
And the nitrogen oxides sensor is set on a vehicle, which has an engine modules, a Throttle Opening Control module, this is automobile-used
Computer is connect with the engine modules, the Throttle Opening Control module respectively, which receives the state letter of the engine modules respectively
The status information of breath and the Throttle Opening Control module.
6. the processing system according to claim 5 for judging different biodiesel ratios, which is characterized in that the engine modules
Status information include a rotary speed information, a load information, the status information of the Throttle Opening Control module includes accelerator open degree letter
Breath.
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| JP2008138619A (en) * | 2006-12-04 | 2008-06-19 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device of internal combustion engine |
| CN102337978A (en) * | 2010-07-20 | 2012-02-01 | 福特环球技术公司 | Compensation for oxygenated fuel use in a diesel engine |
| CN103899429A (en) * | 2012-12-29 | 2014-07-02 | 比亚迪股份有限公司 | Automobile emission matching control system and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5296291B2 (en) * | 2005-12-08 | 2013-09-25 | いすゞ自動車株式会社 | Exhaust gas purification system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008138619A (en) * | 2006-12-04 | 2008-06-19 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device of internal combustion engine |
| CN102337978A (en) * | 2010-07-20 | 2012-02-01 | 福特环球技术公司 | Compensation for oxygenated fuel use in a diesel engine |
| CN103899429A (en) * | 2012-12-29 | 2014-07-02 | 比亚迪股份有限公司 | Automobile emission matching control system and control method thereof |
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