CN104354696B - passenger car oil consumption control method - Google Patents
passenger car oil consumption control method Download PDFInfo
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- CN104354696B CN104354696B CN201410624921.5A CN201410624921A CN104354696B CN 104354696 B CN104354696 B CN 104354696B CN 201410624921 A CN201410624921 A CN 201410624921A CN 104354696 B CN104354696 B CN 104354696B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000446 fuel Substances 0.000 claims abstract description 10
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 8
- 230000004087 circulation Effects 0.000 claims description 6
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 7
- 238000005183 dynamical system Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 28
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/84—Data processing systems or methods, management, administration
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- Engineering & Computer Science (AREA)
- Control Of Transmission Device (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention belongs to passenger car dynamical system design studies field, and in particular to a kind of passenger car oil consumption control method, comprise the following steps：Determine that the speed of change speed gear box compares constraints；Draft the initial speed ratio of change speed gear box；Determine the higher at the uniform velocity speed of usage frequency during passenger car normal driving；Calculate the rotating speed and moment of torsion of the electromotor of conventional operating mode；Judge whether above-mentioned operating point is located in oil consumption economic zone, if not in economic zone if equipower line is drawn on engine MAP, operating point is translated along equipower line, till each operating point enters oil consumption economic zone, the rotating speed and moment of torsion of each operating point after then reading movement on engine MAP；The speed ratio of the change speed gear box after calculation optimization；Change speed gear box speed ratio is contrasted than constraints with speed, if meet the constraint condition, fuel consumption is optimal.The present invention is circulated with reference to NEDC, larger operating mode is contributed to oil consumption in finding out vehicle travel process, then the oil consumption to the operating mode is optimized, and then improve the fuel saving of car load, oil consumption of the present invention to automobile in perfect theoretical basiss is optimized, it is ensured that in optimization process, the power performance of automobile is unaffected.
Description
Technical field
The invention belongs to passenger car dynamical system design studies field, and in particular to a kind of passenger car oil consumption control method.
Background technology
Climate warming and ecological deterioration in global range, the worsening shortages of petroleum resources, automobile pollution and volume of production and marketing
Growth make energy-conserving and environment-protective become the common recognition of country, Che Qi, consumer.From in terms of current petroleum exploration in China development situation, new
In the case that proved reserves are without important breakthrough, oil production rate cannot increasingly meet domestic demand, and the die is cast.Chinese market is taken advantage of
Circulated using NEDC with car oil consumption test loop, so-called NEDC is New European Driving Cycle abbreviations, and this follows
Ring is the course of normal operation for simulating driver under normal road condition, and the change to speed during this and gear remembers
Record, in NEDC circulations, electromotor mainly runs on middle-low load and middle and slow speed of revolution, therefore by assessing in car load NEDC circulations,
The ratio that working conditions of different engines is contributed to complete-vehicle oil consumption, then reduces large percentage operating mode with demarcating by thermodynamics exploitation
Oil consumption is for improving car load economic performance important in inhibiting.
The content of the invention
It is an object of the invention to provide a kind of being capable of the scientific and effective passenger car oil consumption control for reducing automobile engine oil consumption
Method processed.
For achieving the above object, the invention provides just seeming scheme below：
A kind of passenger car oil consumption control method, comprises the following steps：
A. the change model of the speed gear ratios i.e. more each than constraints of change speed gear box is determined according to type of vehicle and empirical data
Enclose；
B. draft the initial speed ratio of change speed gear box；
C. according to the higher at the uniform velocity speed of usage frequency during NEDC circulation determination passenger car normal drivings；
D. calculated according to the drive system parameter of the speed ratio and passenger car drafted in the speed, step b determined in step c
The rotating speed and moment of torsion of electromotor；
E. circulated according to NEDC, calculate the weight point of each operating mode contributive to oil consumption in passenger car normal driving process
Cloth, and calculate the rotating speed and moment of torsion of electromotor under the operating mode；
F. the rotating speed calculated in step d, e, moment of torsion operating point are labeled on engine MAP, judge above-mentioned
Whether operating point is located in oil consumption economic zone, and if in economic zone, fuel consumption is optimum, if not in economic zone
Inside then continue following steps；
G. equipower line is drawn on engine MAP, by each operating point marked out in step f along constant power
Line is translated, till each operating point enters oil consumption economic zone, after then reading movement on engine MAP
The rotating speed and moment of torsion of each operating point；
H. the NEDC for being determined according to the rotating speed and moment of torsion and step c, e that obtain in step g circulates the speed of each oil consumption operating mode
Calculate the speed ratio of change speed gear box；
I. the change speed gear box obtained in step h speed ratio is contrasted than constraints with the speed in step a, if meet the constraint
Then fuel consumption is optimal condition, if being unsatisfactory for constraints side return to step g re-moves each operating point, is followed with this
Ring.
The method have technical effect that：Circulate with reference to NEDC, larger is contributed to oil consumption in finding out vehicle travel process
Operating mode, the then oil consumption to the operating mode are optimized, and then improve the fuel saving of car load, and the present invention is in perfect theoretical basiss
On the oil consumption of automobile is optimized, it is ensured that in optimization process, the power performance of automobile is unaffected.
Description of the drawings
Fig. 1 is car load drive system schematic diagram；
Fig. 2 is engine MAP；
Fig. 3 is the flow chart of the present invention.
Specific embodiment
As shown in figure 1, a kind of passenger car oil consumption control method, comprises the following steps：
A. the change model of the speed gear ratios i.e. more each than constraints of change speed gear box is determined according to type of vehicle and empirical data
Enclose；
B. draft the initial speed ratio of change speed gear box；
C. according to the higher at the uniform velocity speed of usage frequency during NEDC circulation determination passenger car normal drivings；
D. calculated according to the drive system parameter of the speed ratio and passenger car drafted in the speed, step b determined in step c
The rotating speed and moment of torsion of electromotor；
E. circulated according to NEDC, calculate the weight point of each operating mode contributive to oil consumption in passenger car normal driving process
Cloth, and calculate the rotating speed and moment of torsion of electromotor under the operating mode；
F. the rotating speed calculated in step d, e, moment of torsion operating point are labeled on engine MAP, judge above-mentioned
Whether operating point is located in oil consumption economic zone, and if in economic zone, fuel consumption is optimum, if not in economic zone
Inside then continue following steps；
G. equipower line is drawn on engine MAP, by each operating point marked out in step f along constant power
Line is translated, till each operating point enters oil consumption economic zone, after then reading movement on engine MAP
The rotating speed and moment of torsion of each operating point；
H. the NEDC for being determined according to the rotating speed and moment of torsion and step c, e that obtain in step g circulates the speed of each oil consumption operating mode
Calculate the speed ratio of change speed gear box；
I. the change speed gear box obtained in step h speed ratio is contrasted than constraints with the speed in step a, if meet the constraint
Then fuel consumption is optimal condition, if being unsatisfactory for constraints side return to step g re-moves each operating point, is followed with this
Ring.
Further, enter if cannot be introduced into oil consumption economic zone all the time in each operating point moving process in step g
Following steps：
J. adjust engine valve, improve efficiency of combustion, the oil consumption economic zone in engine MAP is made to step
The operating point direction skew marked out in rapid f.
Further, in step j, the method for regulation engine valve is：Change the angle or valve and piston of valve
Between away from, and then change piston cylinder compression ignition when cylinder in cavity volume.
Further, the speed that step c is chosen is each one including at least low speed, middling speed, high speed, and wherein low speed is chosen
Interval is 30km/h-50km/h, and it is 50km/h-80km/h that the selection of middling speed is interval, and it is 90km/h-120km/ to choose at a high speed interval
h。
Further, the operating mode of each gear acceleration mode is included at least in step e to the contributive operating mode of oil consumption.
The control process of the present invention is described further in conjunction with following examples：
The oil consumption optimization process of the automobile of five drive shifts is as follows：
(1) speed ratio of main reducer of change speed gear box is i0, one, two, three, four, five notch speeds are than respectively i1、i2、i3、i4、i5, receive
The requirement of drivability and car load dynamic property, change speed gear box speed ratio should be in following scope：1.0*4.3≥i5i0≥0.831*
3.824,1.0*4.3 >=i1i0≥0.831*3.824.Due to two, three, the speed of fourth gear compare i2、i3、i4I must be compared in a notch speed1With
Five notch speeds compare i5Between, therefore need to only constrain a notch speed and compare i1Compare i with five notch speeds5.Above-mentioned constraints is that basis was set in the past
Obtained by meter experience.
(2) data according to NEDC cycle index, choose the larger speed of four proportions：Third gear 50km/h, five grades
70km/h, five grades of 100km/h, five grades of 120km/h.
(3) other larger operating modes of oil consumption in NEDC circulations, such as operating mode of each shelves boost phase are determined.And calculate each
Operating mode proportion.
(4) with reference to car load drive system parameter, the engine operating condition under above-mentioned each operating mode, the i.e. rotating speed of electromotor are calculated
And moment of torsion, A0、B0、C0、D0The engine operating condition under four cruising modes, a are represented respectively0、b0、c0、d0、e0、f0Represent which respectively
The larger engine operating condition of his oil consumption, Each operating mode proportion is represented respectively.
(5) as shown in Fig. 2 above-mentioned each engine operating condition point is marked out on engine MAP, can be with from figure
Find out, above-mentioned each operating point is not in oil consumption economic zone.
(6) equipower line is drawn, the abscissa in Fig. 2 is rotating speed, and vertical coordinate is moment of torsion, and the product of the two is electromotor
Power, therefore equipower line should be the inverse proportion function line for successively decreasing.By the A in figure0、B0、C0、D0、a0、b0、c0、d0、e0、f0
Each point is moved to the upper left corner along equipower line, until closest to oil consumption economic zone position, the engine power point after being optimized
A1、B1、C1、D1、a1、b1、c1、d1、e1、f1。
(7) moment of torsion and rotating speed of each work station point after above-mentioned optimization are read, with reference to the output speed in (2), (3), is calculated
Go out the speed ratio of change speed gear box.
(8) speed after above-mentioned optimization is computed than contrasting than constraints with speed, the speed after optimization is than meeting about
Beam condition, up to optimum, calculating terminates fuel consumption.
Claims (7)
1. a kind of passenger car oil consumption control method, it is characterised in that：Comprise the following steps：
A. the excursion of the speed gear ratios i.e. more each than constraints of change speed gear box is determined according to type of vehicle and empirical data；
B. draft the initial speed ratio of change speed gear box；
C. according to the higher at the uniform velocity speed of usage frequency during NEDC circulation determination passenger car normal drivings；
D. calculated according to the drive system parameter of the speed ratio and passenger car drafted in the speed, step b determined in step c and started
The rotating speed and moment of torsion of machine；
E. circulated according to NEDC, calculate the weight distribution of each operating mode contributive to oil consumption in passenger car normal driving process, and
Calculate the rotating speed and moment of torsion of electromotor under the operating mode；
F. the rotating speed calculated in step d, e, moment of torsion operating point are labeled on engine MAP, judge above-mentioned operating mode
Whether point is located in oil consumption economic zone, the fuel consumption optimum if in economic zone, if not in economic zone if
Continue following steps；
G. equipower line is drawn on engine MAP, each operating point marked out in step f is put down along equipower line
Move, each work till each operating point enters oil consumption economic zone, after then reading movement on engine MAP
The rotating speed and moment of torsion of condition point；
H. the NEDC for being determined according to the rotating speed and moment of torsion and step c, e that obtain in step g circulates the speed of each oil consumption operating mode and calculates
Go out the speed ratio of change speed gear box；
I. the change speed gear box obtained in step h speed ratio is contrasted than constraints with the speed in step a, if meet the constraint condition
Then fuel consumption is optimal, if being unsatisfactory for constraints side return to step g re-moves each operating point, is circulated with this.
2. passenger car oil consumption control method according to claim 1, it is characterised in that：If each operating point is moved in step g
All the time oil consumption economic zone is cannot be introduced into during dynamic and then enters following steps：
J. adjust engine valve, improve efficiency of combustion, make the oil consumption economic zone in engine MAP in step f
The operating point direction skew for marking out.
3. passenger car oil consumption control method according to claim 1, it is characterised in that：The speed that step c is chosen is extremely
Each one comprising low speed, middling speed, high speed less, it is 30km/h-50km/h that wherein low speed is chosen interval, and the selection interval of middling speed is
50km/h-80km/h, it is 90km/h-120km/h to choose at a high speed interval.
4. passenger car oil consumption control method according to claim 1, it is characterised in that：There is tribute to oil consumption in step e
Operating mode of the operating mode offered including at least each gear acceleration mode.
5. passenger car oil consumption control method according to claim 3, it is characterised in that：The speed chosen in step c
Respectively third gear 50km/h, five grades of 70km/h, five grades of 100km/h, five grades of 120km/h.
6. passenger car oil consumption control method according to claim 5, it is characterised in that：Change speed gear box speed ratio in step a
Constraints be：1.0*4.3≥i5i0>=0.831*3.824, while 1.0*4.3 >=i1i0>=0.831*3.824, wherein i0、
i1、i5Respectively change speed gear box speed ratio of main reducer, one notch speed ratio of change speed gear box, five notch speed ratio of change speed gear box.
7. passenger car oil consumption control method according to claim 2, it is characterised in that：Electromotor is adjusted in step j
The method of valve is：Change valve angle or valve and piston between away from, and then change piston cylinder compression ignition when cylinder in sky
Cavity volume.
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| CN201410624921.5A CN104354696B (en) | 2014-11-07 | 2014-11-07 | passenger car oil consumption control method |
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| CN201410624921.5A CN104354696B (en) | 2014-11-07 | 2014-11-07 | passenger car oil consumption control method |
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| CN104354696B true CN104354696B (en) | 2017-03-29 |
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| CN105201663B (en) * | 2015-09-23 | 2017-05-31 | 厦门金龙旅行车有限公司 | A kind of control method for realizing engine optimal economic rotating speed |
| CN106814765B (en) * | 2015-12-02 | 2018-11-02 | 中联重科股份有限公司 | Device and method for determining energy consumption of mixer truck and mixer truck |
| CN105844061B (en) * | 2016-04-25 | 2019-12-10 | 奇瑞汽车股份有限公司 | method and device for generating gear shifting map |
| CN108223779B (en) * | 2017-06-28 | 2019-09-06 | 长城汽车股份有限公司 | The determination method and apparatus of speed changer top gear speed ratio |
| CN109141910B (en) * | 2018-05-23 | 2020-07-31 | 中国汽车技术研究中心有限公司 | Test condition conversion method from whole vehicle to engine |
| CN109580251A (en) * | 2018-12-28 | 2019-04-05 | 上汽通用五菱汽车股份有限公司 | A kind of rear axle Efficiency test method based on NEDC oil consumption operating condition |
| CN113815609B (en) * | 2020-06-19 | 2023-08-01 | 宇通客车股份有限公司 | Constant-speed cruising system and fuel-saving control method and device thereof |
| CN112498333A (en) * | 2020-08-12 | 2021-03-16 | 中国汽车技术研究中心有限公司 | Power split type new energy vehicle fuzzy control method and device and new energy vehicle |
| CN112861362B (en) * | 2021-02-22 | 2022-09-16 | 一汽解放汽车有限公司 | Power assembly performance parameter optimization method and device based on vehicle oil consumption |
| CN112907102B (en) * | 2021-03-09 | 2024-05-07 | 一汽解放汽车有限公司 | Driving scoring method, device, equipment and storage medium |
| CN113565954B (en) * | 2021-06-23 | 2023-03-31 | 东风汽车集团股份有限公司 | Gear shifting optimization method and system based on working conditions |
| CN114542706B (en) * | 2022-03-31 | 2024-01-16 | 潍柴动力股份有限公司 | Vehicle gear optimization method and device based on multi-vehicle cooperation and vehicle |
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| CN103573439A (en) * | 2013-11-06 | 2014-02-12 | 东风康明斯发动机有限公司 | Method for electrically controlling rotating speed of engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1415837A1 (en) * | 2002-10-29 | 2004-05-06 | STMicroelectronics S.r.l. | Parallel configuration system for hybrid vehicles |
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