CN110296013A - The method of diesel engine atmospheric humidity amendment air inflow - Google Patents
The method of diesel engine atmospheric humidity amendment air inflow Download PDFInfo
- Publication number
- CN110296013A CN110296013A CN201910386551.9A CN201910386551A CN110296013A CN 110296013 A CN110296013 A CN 110296013A CN 201910386551 A CN201910386551 A CN 201910386551A CN 110296013 A CN110296013 A CN 110296013A
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- China
- Prior art keywords
- atmospheric humidity
- diesel engine
- car
- air inflow
- mounted terminal
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0418—Air humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
- F02D2200/701—Information about vehicle position, e.g. from navigation system or GPS signal
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- 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)
Abstract
The invention discloses a kind of methods of diesel engine atmospheric humidity amendment air inflow.The diesel engine atmospheric humidity corrects the method for air inflow the following steps are included: step 1, the network platform passes through car-mounted terminal return data for vehicle location, and local atmospheric humidity data are issued into car-mounted terminal, car-mounted terminal passes information to ECU after receiving atmospheric humidity；Step 2, ECU carry out the amendment of gaseous mixture gas constant according to humidity information, finally calculate air capacity.The method that the diesel engine atmospheric humidity corrects air inflow passes through terminal platform for vehicle location, sends local atmospheric humidity information, the input of simulated atmosphere humidity sensor.Air capacity corrected Calculation is carried out further according to atmospheric humidity, realizes that the atmospheric humidity of different conditions effectively corrects diesel engine intake amount, reaches and be precisely controlled calculating.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of method of diesel engine atmospheric humidity amendment air inflow.
Background technique
Diesel engine was in use, both without atmospheric humidity sensor or atmospheric moisture angle value acquisition modes at present；Do not have yet
Have and air input of engine by air is modified for atmospheric humidity.Air capacity calculation used at present is as follows:
Pm--- intake manifold absolute pressure (MAP), kPa
Tm--- inlet manifold mean temperature (MAT), K
Vd--- engine displacement, L
Rm--- gaseous mixture gas constant (Jg-1K-1 or kPaLg-1K-1), Rm=R/M
R --- universal gas constant (8.31441Jmol-1K-1 or kPaLmol-1K-1)
Ve --- volumetric efficiency
N --- engine speed
It can be seen that air inflow calculating has no humidity amendment.
The shortcomings that existing diesel engine air capacity calculates:
1, in actual use, the access of no humidity sensor is also passed to ECU without relative humidity signal.
2, air capacity calculating is not counted in atmospheric humidity amendment, causes air calculation amount inaccurate.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of diesel engine atmospheric humidity of simple and reasonable steps amendment air inflow method,
The method that the diesel engine atmospheric humidity corrects air inflow passes through terminal platform for vehicle location, sends local atmospheric humidity letter
Breath, the input of simulated atmosphere humidity sensor.Air capacity corrected Calculation is carried out further according to atmospheric humidity, realizes the atmosphere of different conditions
Humidity effectively corrects diesel engine intake amount, reaches and is precisely controlled calculating.
To achieve the above object, the present invention provides a kind of methods of diesel engine atmospheric humidity amendment air inflow, including with
Lower step: step 1, the network platform are sent out by car-mounted terminal return data by vehicle location, and by local atmospheric humidity data
To car-mounted terminal, car-mounted terminal passes information to ECU after receiving atmospheric humidity；Step 2, ECU are mixed according to humidity information
The amendment for closing gas gas constant, finally calculates air capacity.
In a preferred embodiment, in step 2, ECU carries out gaseous mixture gas constant correction according to humidity information
Specific modification method are as follows: according to the atmospheric moisture angle value obtained in real time, inquire coefficient curve and obtain correction factor, then mixed with original
Gas molal weight is multiplied to obtain final gaseous mixture molal weight, and it is normal to acquire gaseous mixture gas by final gaseous mixture molal weight
Number.
In a preferred embodiment, original gaseous mixture molal weight is 29g/mol.
In a preferred embodiment, car-mounted terminal is GPS terminal.
In a preferred embodiment, car-mounted terminal is passed information to after receiving atmospheric humidity by CAN bus
ECU。
Compared with prior art, the method for diesel engine atmospheric humidity amendment air inflow according to the present invention has following beneficial
Effect:
1, it save the cost: obtains atmospheric humidity information and does not need real sensor intervention.
2, accurate to calculate: original scheme increases atmospheric humidity and carries out air capacity corrected Calculation without atmospheric humidity correction strategy,
Do control calculation optimization.
Detailed description of the invention
Fig. 1 is the mixture gas of the method for the diesel engine atmospheric humidity amendment air inflow of first embodiment according to the present invention
The amendment schematic diagram of body constant.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
The method of diesel engine atmospheric humidity amendment air inflow according to the preferred embodiment of the invention specifically includes following step
It is rapid:
Step 1, the network platform by car-mounted terminal return data by vehicle location, and by local atmospheric humidity data
Car-mounted terminal is issued, car-mounted terminal passes information to ECU after receiving atmospheric humidity.
ECU (Electronic Control Unit) electronic control unit, also known as " car running computer ", " vehicle-mounted computer " etc..
It is then automobile specified microcomputerized controller from purposes.
Information is issued vehicle-mounted (GPS) terminal by mobile base station by the network platform, and car-mounted terminal and the network platform can be real
Existing information exchange.It is one of mode more commonly used at present.The available vehicle location of such mode starts control command to vehicle
Mounted terminal etc. signal interaction.(realize and atmospheric humidity be transmitted to ECU)
Preferably, car-mounted terminal is GPS terminal.
Preferably, ECU is passed information to by CAN bus after car-mounted terminal reception atmospheric humidity.
Step 2, ECU carry out the amendment of gaseous mixture gas constant according to humidity information, finally calculate air capacity.It realizes not
Atmospheric humidity with state effectively corrects diesel engine intake amount, reaches and is precisely controlled calculating.
That is, original air capacity calculates:
Pm--- intake manifold absolute pressure (MAP), kPa
Tm--- inlet manifold mean temperature (MAT), K
Vd--- engine displacement, L
Rm--- gaseous mixture gas constant (Jg-1K-1 or kPaLg-1K-1), Rm=R/M
R --- universal gas constant (8.31441Jmol-1K-1 or kPaLmol-1K-1)
Ve --- volumetric efficiency
N --- engine speed
Wherein, RmGaseous mixture gas constant is represented, wherein Rm=R/M.R is universal gas constant (for definite value),
M is the molal weight (default uses 29g/mol always at present, i.e. the molal weight of air) of gaseous mixture, gaseous mixture
Ingredient is different, causes the molal weight of gaseous mixture different.
As shown in Figure 1, specific modification method:
According to the atmospheric moisture angle value obtained in real time, inquire coefficient curve and obtain correction factor, then with original gaseous mixture mole
Mass M (29g/mol) is multiplied, and obtains final gaseous mixture molal weight N.It substitutes into and calculates:
Rm--- gaseous mixture gas constant (Jg-1K-1 or kPaLg-1K-1), Rm=R/N
Pass through air capacity calculation formula:
Obtain final air amount value.
To sum up, the method for diesel engine atmospheric humidity amendment air inflow is sent local by terminal platform by vehicle location
Atmospheric humidity information, simulated atmosphere humidity sensor input.Air capacity corrected Calculation is carried out further according to atmospheric humidity, is realized not
Atmospheric humidity with state effectively corrects diesel engine intake amount, reaches and is precisely controlled calculating.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (5)
1. a kind of method of diesel engine atmospheric humidity amendment air inflow, which comprises the following steps:
Step 1, the network platform are issued by car-mounted terminal return data by vehicle location, and by local atmospheric humidity data
Car-mounted terminal, car-mounted terminal pass information to ECU after receiving atmospheric humidity；
Step 2, ECU carry out the amendment of gaseous mixture gas constant according to humidity information, finally calculate air capacity.
2. the method for diesel engine atmospheric humidity amendment air inflow as described in claim 1, which is characterized in that the step 2
In, ECU carries out the specific modification method of gaseous mixture gas constant correction according to humidity information are as follows: according to the atmospheric moisture obtained in real time
Angle value, inquiry coefficient curve obtains correction factor, then is multiplied to obtain final gaseous mixture mole matter with original gaseous mixture molal weight
Amount, acquires gaseous mixture gas constant by final gaseous mixture molal weight.
3. the method for diesel engine atmospheric humidity amendment air inflow as claimed in claim 2, which is characterized in that original mixing
Gas molal weight is 29g/mol.
4. the method for diesel engine atmospheric humidity amendment air inflow as described in claim 1, which is characterized in that the car-mounted terminal
For GPS terminal.
5. the method for diesel engine atmospheric humidity amendment air inflow as described in claim 1, which is characterized in that the car-mounted terminal
ECU is passed information to by CAN bus after reception atmospheric humidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386551.9A CN110296013A (en) | 2019-05-09 | 2019-05-09 | The method of diesel engine atmospheric humidity amendment air inflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386551.9A CN110296013A (en) | 2019-05-09 | 2019-05-09 | The method of diesel engine atmospheric humidity amendment air inflow |
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| Publication Number | Publication Date |
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| CN110296013A true CN110296013A (en) | 2019-10-01 |
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| CN201910386551.9A Pending CN110296013A (en) | 2019-05-09 | 2019-05-09 | The method of diesel engine atmospheric humidity amendment air inflow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991969A (en) * | 2022-06-20 | 2022-09-02 | 西安交通大学 | Method and device for adaptively correcting air inflow and air environment of natural gas engine |
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| CN104155409A (en) * | 2013-05-14 | 2014-11-19 | 福特环球技术公司 | Automotive virtual humidity sensor |
| CN106471240A (en) * | 2014-06-20 | 2017-03-01 | 丰田自动车株式会社 | Control system for internal combustion engine |
| CN106545431A (en) * | 2015-09-17 | 2017-03-29 | 三菱电机株式会社 | Engine control system |
| WO2017130675A1 (en) * | 2016-01-27 | 2017-08-03 | 日立オートモティブシステムズ株式会社 | Control device |
| CN107923359A (en) * | 2015-08-25 | 2018-04-17 | 日立汽车系统株式会社 | Combustion engine control |
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2019
- 2019-05-09 CN CN201910386551.9A patent/CN110296013A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571880A (en) * | 2001-10-15 | 2005-01-26 | 丰田自动车株式会社 | Suction air volume estimating device for internal combustion engine |
| CN104155409A (en) * | 2013-05-14 | 2014-11-19 | 福特环球技术公司 | Automotive virtual humidity sensor |
| CN106471240A (en) * | 2014-06-20 | 2017-03-01 | 丰田自动车株式会社 | Control system for internal combustion engine |
| CN107923359A (en) * | 2015-08-25 | 2018-04-17 | 日立汽车系统株式会社 | Combustion engine control |
| CN106545431A (en) * | 2015-09-17 | 2017-03-29 | 三菱电机株式会社 | Engine control system |
| WO2017130675A1 (en) * | 2016-01-27 | 2017-08-03 | 日立オートモティブシステムズ株式会社 | Control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991969A (en) * | 2022-06-20 | 2022-09-02 | 西安交通大学 | Method and device for adaptively correcting air inflow and air environment of natural gas engine |
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