CN107762640A - A kind of intelligent accelerator control method - Google Patents
A kind of intelligent accelerator control method Download PDFInfo
- Publication number
- CN107762640A CN107762640A CN201710945076.5A CN201710945076A CN107762640A CN 107762640 A CN107762640 A CN 107762640A CN 201710945076 A CN201710945076 A CN 201710945076A CN 107762640 A CN107762640 A CN 107762640A
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- China
- Prior art keywords
- map
- vehicle
- ecu
- grade
- vehicle position
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
-
- 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
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
-
- 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
- F02D2200/702—Road conditions
Abstract
The invention discloses a kind of intelligent accelerator control method, comprise the following steps：Vehicle position information is obtained, and is sent to common rail row；Common rail is about to vehicle position information and Road spectrum information is sent to ECU；ECU determines the gradient of vehicle position, the rotating speed moment of torsion MAP according to corresponding to determining the gradient, MAP correction factors is determined according to car weight and length of grade according to the vehicle position information and Road spectrum information of acquisition；ECU judges whether to need to switch MAP according to vehicle accelerator rate of change, when handover is needed, switches MAP and moment of torsion is modified；Vehicle accelerator is controlled according to moment of torsion after amendment.The present invention can adjust engine output torque according to car weight and Road spectrum information, solve the problems, such as to be short of power during vehicle driving up and the oil consumption caused by driving habit is bad is high.
Description
Technical field
The present invention relates to technical field of vehicle, and in particular to a kind of intelligent accelerator control method.
Background technology
Increasingly favored by masses with the reinforcement of environmental consciousness, electronic automobile with the improvement of living standards, in order to
The different driving habits of different drivers are adapted to, existing automobile can configure several different step on inside electronic control unit ECU
Plate torque characteristics, the voltage signal related to gas pedal aperture are connected to ECU, and ECU turns round according to gas pedal aperture and pedal
Square characteristic obtains engine target moment of torsion, so as to realize the control to engine torque.Above-mentioned several different pedaling torques are special
Property represent sports type, economical and general modfel etc. respectively, driver can select one of which driving model according to driving habit,
Now pedaling torque characteristic is fixed that ECU obtains moment of torsion according to gas pedal aperture in vehicle travel process, it is impossible to root
It is adjusted according to car weight and Road spectrum information, therefore the problem of oil consumption is high can be produced when driver's driving habit is bad, with
And during vehicle driving up, driver can feel vehicle power deficiency, so as to influence the driving experience of driver.
The content of the invention
In order to overcome above-mentioned deficiency, it is an object of the invention to provide one kind can according to road grade select MAP, and according to
The intelligent accelerator control method that road length of grade and car weight are modified to moment of torsion.
The present invention realizes that the scheme of purpose is as follows：A kind of intelligent accelerator control method, it is characterised in that including following step
Suddenly：
(1) vehicle position information is obtained, and is sent to common rail row；
(2) common rail is about to vehicle position information and Road spectrum information is sent to ECU；
(3) several MAPs built in ECU, ECU determine vehicle institute according to the vehicle position information and Road spectrum information of acquisition
The gradient and length of grade in position, the then MAP according to corresponding to determining the gradient, while ECU determines that MAP is repaiied according to length of grade and car weight
Positive coefficient；
(4) ECU obtains vehicle accelerator rate of change, then judges whether to need to switch MAP according to vehicle accelerator rate of change, when need
When switching, ECU is switched it to MAP corresponding to the gradient of vehicle position, and obtains moment of torsion according to MAP, then
Moment of torsion is modified by MAP correction factors, obtains moment of torsion after amendment；
(5) vehicle accelerator is controlled according to moment of torsion after the amendment.
The common rail row, is the control function using electronic control system, the collection vehicle and engine intelligent of release
Manage in the control system of one, by load information module on the engine, carry out remote information collection and intelligent control.
Preferably；Engine speed and gas pedal aperture in MAP obtain moment of torsion, are then multiplied by moment of torsion
MAP correction factors are modified.
Preferably；The acquisition modes of the vehicle position information are completed by vehicle GPS, built in the common rail row
Road spectrum information.
Preferably；Several MAPs built in the ECU, wherein the corresponding range of grade of each MAP, the ECU roots
According to the gradient of vehicle position determine corresponding to range of grade, the then MAP according to corresponding to determining range of grade.
Preferably；The MAP is to be obtained according to the vehicle of the vehicle by testing.
Preferably；Real-time car weight measuring system built in the ECU, according to the gradient of vehicle position, measure vehicle weight
Amount, the MAP correction factors table of comparisons built in the ECU, according to the length of grade of vehicle position and car weight by inquiring about MAP amendments system
The number table of comparisons obtains MAP correction factors, and the MAP correction factors table of comparisons includes several lengths of grade setting numerical value and car weight setting
Numerical value, under different car weight setting numerical value, each length of grade setting numerical value corresponds to different MAP correction factors, if where vehicle
The length of grade of position between two lengths of grade set numerical value, then according to the length of grade of vehicle position two lengths of grade setting numerical value it
Between ratio calculate corresponding to MAP correction factors, if car weight between two car weights set numerical value, according to car weight in two car weights
MAP correction factors corresponding to ratio calculating between setting numerical value.
Preferably；The MAP correction factors table of comparisons is to pass through reality according to the vehicle of the vehicle, road length of grade and car weight
Test acquisition.
Preferably；Throttle rate of change calibration value built in the ECU, when throttle rate of change is less than throttle rate of change calibration value
When, former MAP is performed, when throttle rate of change is more than throttle rate of change calibration value, switches MAP.
Preferably；The throttle rate of change calibration value is to be obtained according to the vehicle of the vehicle by testing.
Advantages of the present invention：
(1) present invention can adjust engine output torque according to car weight and Road spectrum information, in vehicle travel process, pass through
Vehicle position information and inquiry roads road spectrum information are obtained to determine the gradient of vehicle position and length of grade, is selected according to the gradient
Different MAPs, realize and engine output torque under identical gas pedal aperture is lifted in vehicle driving up.
(2) when road grade is smaller, from the less MAP of slope, vehicle economy is lifted, if length of grade and load-carrying
It is smaller, moment of torsion is modified using less MAP correction factors value, further lifts vehicle economy, while also solve
Because driver driving custom it is bad caused by oil consumption it is high the problem of.
(3) when road grade is larger, from the MAP that slope is larger, vehicle dynamic property is lifted, if length of grade and car weight
It is larger, moment of torsion is modified using larger MAP correction factor values, vehicle dynamic property is further lifted, so as to solve driver
The problem of feeling vehicle power deficiency when driving vehicle driving up.
Brief description of the drawings
Fig. 1 is the intelligent throttle control circuit figure of the present invention；
Fig. 2 is the intelligent Throttle Opening Control logic chart of the present invention；
Fig. 3 is MAP in the embodiment of the present invention1、MAP2And MAP3Difference schematic diagram；
Fig. 4 is MAP in the embodiment of the present invention1Figure；
Fig. 5 is MAP in the embodiment of the present invention2Figure；
Fig. 6 is MAP in the embodiment of the present invention3Figure.
Embodiment
Below by specific embodiment, technical scheme is described in further detail.
Embodiment
As depicted in figs. 1 and 2, a kind of intelligent accelerator control method, comprises the following steps：
(1) vehicle position information is obtained by vehicle GPS, and is sent to common rail row, Road built in the common rail row is composed
Information；
(2) common rail is about to vehicle position information and Road spectrum information is sent to ECU；
(3) three different MAPs built in ECU, ECU determine car according to the vehicle position information and Road spectrum information of acquisition
The gradient and length of grade of position, the then MAP according to corresponding to determining the gradient, while ECU determines according to length of grade and car weight
MAP correction factors；
(4) ECU obtains vehicle accelerator rate of change, then judges whether to need to switch MAP according to throttle rate of change, when needs are cut
When changing, ECU is switched it to MAP corresponding to the gradient of vehicle position, and is opened according to engine speed and gas pedal
Degree obtains moment of torsion, and moment of torsion is multiplied by into MAP correction factors and is modified, and obtains moment of torsion after amendment；
(5) vehicle accelerator is controlled according to moment of torsion after the amendment.
The common rail row, is the control function using electronic control system, the collection vehicle and engine intelligent of release
Manage in the control system of one, by load information module on the engine, carry out remote information collection and intelligent control.
Three different MAPs, respectively MAP built in the ECU1、MAP2And MAP3, as shown in Figure 4, Figure 5 and Figure 6, should
Difference between three MAPs is as shown in figure 3, the MAP as seen from Figure 31、MAP2And MAP3Rotating speed-torque curve
Slope increases successively, and the MAP is to be obtained according to the vehicle of the vehicle by testing, and what it was expressed is stepped in different throttles
Moment of torsion and the curve relation figure of engine speed under plate aperture, wherein the corresponding range of grade of each MAP is (such as the institute of table 1
Show), ECU range of grade according to corresponding to determining the gradient of vehicle position, then determined according to range of grade corresponding
MAP.
The corresponding table of the road grade scope of table 1 and MAP
Real-time car weight measuring system built in the ECU, according to the gradient of vehicle position, vehicle weight is measured, it is described
The MAP correction factors table of comparisons (as shown in table 2) built in ECU, the MAP correction factors table of comparisons are the cars according to the vehicle
Type, road length of grade and car weight are obtained by testing, according to the length of grade of vehicle position and car weight by inquiring about MAP correction factors
The table of comparisons obtains MAP correction factors, and the MAP correction factors table of comparisons includes several lengths of grade setting numerical value and car weight setting number
Value, under different car weight setting numerical value, each length of grade setting numerical value corresponds to different MAP correction factors, if vehicle institute is in place
The length of grade put is between two lengths of grade set numerical value, then according to the length of grade of vehicle position between two lengths of grade set numerical value
MAP correction factors corresponding to ratio calculating, if car weight is set between two car weights set numerical value according to car weight in two car weights
MAP correction factors corresponding to ratio calculating between fixed number value.
The table 2MAP correction factor tables of comparisons
Throttle rate of change calibration value built in the ECU, the throttle rate of change calibration value are the vehicles according to the vehicle
Obtained by testing, when throttle rate of change is less than throttle rate of change calibration value, former MAP is performed, when throttle rate of change is more than
During throttle rate of change calibration value, switch MAP, the calculation formula of the throttle rate of change is：
In formula：δ is throttle rate of change, %/s；Pi+1For the gas pedal aperture of i+1 second, %；PiFor the gas pedal of i-th second
Aperture, %；1 is 1 second, s.
Above-described embodiment is a kind of preferable scheme of the present invention, it is impossible to is interpreted as limitation of the present invention, this area
Those of ordinary skill above-described embodiment can be changed, changed within the scope of the invention, replaced and modification.
Claims (9)
1. a kind of intelligent accelerator control method, it is characterised in that comprise the following steps：
（1）Vehicle position information is obtained, and is sent to common rail row；
（2）Common rail is about to vehicle position information and Road spectrum information is sent to ECU；
（3）Several rotating speeds-moment of torsion MAP built in ECU（MAP）, ECU is according to the vehicle position information and Road of acquisition spectrum
Information, the gradient and length of grade of vehicle position are determined, then the MAP according to corresponding to determining the gradient, while ECU is according to length of grade
MAP correction factors are determined with car weight；
（4）ECU obtains vehicle accelerator rate of change, then judges whether to need to switch MAP according to vehicle accelerator rate of change, when
When needing switching, ECU is switched it to MAP corresponding to the gradient of vehicle position, and obtains moment of torsion according to MAP, so
Moment of torsion is modified by MAP correction factors afterwards, obtains moment of torsion after amendment；
（5）Vehicle accelerator is controlled according to moment of torsion after the amendment.
2. intelligent accelerator control method according to claim 1, it is characterised in that：Engine speed in MAP
Moment of torsion is obtained with gas pedal aperture, moment of torsion is then multiplied by MAP correction factors and is modified.
3. intelligent accelerator control method according to claim 1, it is characterised in that：The acquisition side of the vehicle position information
Formula is completed by vehicle GPS, Road spectrum information built in the common rail row.
4. intelligent accelerator control method according to claim 1, it is characterised in that：Several MAPs built in the ECU,
Wherein each corresponding range of grade of MAP, ECU gradient models according to corresponding to determining the gradient of vehicle position
Enclose, then the MAP according to corresponding to determining range of grade.
5. the intelligent accelerator control method according to claim 1 or 4, it is characterised in that：The MAP is according to the car
Vehicle pass through test obtain.
6. intelligent accelerator control method according to claim 1, it is characterised in that：Real-time car weight measurement built in the ECU
System, according to the gradient of vehicle position, measure vehicle weight, the MAP correction factors table of comparisons built in the ECU, according to car
The length of grade and car weight of position obtain MAP correction factors, the MAP amendments system by inquiring about the MAP correction factors table of comparisons
The number table of comparisons includes several lengths of grade setting numerical value and car weight setting numerical value, under different car weight setting numerical value, each length of grade
Setting numerical value correspond to different MAP correction factors, if the length of grade of vehicle position between two lengths of grade setting numerical value, root
According to the length of grade of vehicle position between two lengths of grade set numerical value ratio calculate corresponding to MAP correction factors, if car weight exists
Between two car weight setting numerical value, then the MAP amendments according to corresponding to car weight ratio calculating between two car weights set numerical value are
Number.
7. intelligent accelerator control method according to claim 6, it is characterised in that：The MAP correction factors table of comparisons is
Obtained according to the vehicle of the vehicle, road length of grade and car weight by testing.
8. intelligent accelerator control method according to claim 1, it is characterised in that：Throttle rate of change mark built in the ECU
Definite value, when throttle rate of change is less than throttle rate of change calibration value, former MAP is performed, when throttle rate of change changes more than throttle
During rate calibration value, switch MAP.
9. intelligent accelerator control method according to claim 8, it is characterised in that：The throttle rate of change calibration value is root
Obtained according to the vehicle of the vehicle by testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945076.5A CN107762640B (en) | 2017-10-12 | 2017-10-12 | Intelligent accelerator control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945076.5A CN107762640B (en) | 2017-10-12 | 2017-10-12 | Intelligent accelerator control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107762640A true CN107762640A (en) | 2018-03-06 |
| CN107762640B CN107762640B (en) | 2019-12-06 |
Family
ID=61267255
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|---|---|---|---|
| CN201710945076.5A Active CN107762640B (en) | 2017-10-12 | 2017-10-12 | Intelligent accelerator control method |
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Cited By (3)
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| CN110194168A (en) * | 2019-05-05 | 2019-09-03 | 北京汽车股份有限公司 | Torque distribution method, device, control method and control system for vehicle |
| CN112026745A (en) * | 2020-09-01 | 2020-12-04 | 潍柴动力股份有限公司 | Hybrid electric vehicle driving mode adjusting method and device and hybrid electric vehicle |
| CN112721887A (en) * | 2021-01-19 | 2021-04-30 | 中车青岛四方机车车辆股份有限公司 | Holding brake control method and system and railway vehicle |
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| CN112721887A (en) * | 2021-01-19 | 2021-04-30 | 中车青岛四方机车车辆股份有限公司 | Holding brake control method and system and railway vehicle |
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| CN107762640B (en) | 2019-12-06 |
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