CN1882452A - Method for reducing the fuel consumption of a motor vehicle - Google Patents
Method for reducing the fuel consumption of a motor vehicle Download PDFInfo
- Publication number
- CN1882452A CN1882452A CNA2004800337109A CN200480033710A CN1882452A CN 1882452 A CN1882452 A CN 1882452A CN A2004800337109 A CNA2004800337109 A CN A2004800337109A CN 200480033710 A CN200480033710 A CN 200480033710A CN 1882452 A CN1882452 A CN 1882452A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- speed
- chaufeur
- request
- motion
- Prior art date
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000446 fuel Substances 0.000 title claims abstract description 11
- 230000001133 acceleration Effects 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011297 pine tar Substances 0.000 description 1
- 229940068124 pine tar Drugs 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/02—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically
- B60K31/04—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including electrically actuated servomechanism including an electric control system or a servomechanism in which the vehicle velocity affecting element is actuated electrically and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/16—Driving resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/10—Accelerator pedal position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2555/00—Input parameters relating to exterior conditions, not covered by groups B60W2552/00, B60W2554/00
- B60W2555/20—Ambient conditions, e.g. wind or rain
-
- 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention relates to a method for reducing the fuel consumption of a motor vehicle. According to said method, a driver's request for a uniform vehicle speed is determined and once said request has been identified, the modifications to the vehicle speed, which are not initiated by the driver, are at least partially adjusted to obtain the lowest possible fuel consumption, for the engine of the vehicle.
Description
Technical field
The present invention relates to be used to reduce the method for the consumption of fuel of self-propelled vehicle.
Background technology
Because energy prices continue to rise, the consumption of fuel of vehicle is subjected to special concern.The consumption of fuel that the reduces current vehicle ever more important that becomes.
Yet, drive the reduction of the further developing of driving engine, air resistance or rolling resistance and other and reduce the innovative approach that consumes and can only partly utilize feasible consumption to reduce the existing potentiality of means.
In addition, only just can realize bigger saving in principle by the fuel-saving mode of travelling.
Summary of the invention
The objective of the invention is to, improving vehicle control aspect fuel-saving the travelling.
This purpose realizes by independent claims.Preferred form of implementation illustrates in the dependent claims.
This purpose realizes like this: judge the chaufeur request for even car speed; In case discern this chaufeur request for even car speed, then control and regulation are not the changes in vehicle speed that is caused by chaufeur at least in part, so that make the consumption of fuel of the driving driving engine of vehicle---as gasoline or diesel oil---as far as possible little.
According to the present invention, improve the homogeneity of travelling as the key factor of the fuel-saving mode of travelling.This means, should reduce as much as possible and quicken operation and deceleration-operation.
Particularly preferably, this method is used to have the gasoline direct system or as the vehicle of the diesel motor that drives driving engine, has special advantage aspect the consumption under the part load running.
In addition, the present invention proposes, if traffic requires and be corresponding with the hope of chaufeur, then vehicle should change react (the method according to this invention does not consume optimization control) as before to accelerator pedal position.
Generally speaking, by this solution, the motoring condition of other that chaufeur is advantageously needn't " be forced to accept " common.Automatically get involved vehicle control by the method according to this invention and be not counted as constraint, accepted easilier by chaufeur to chaufeur.
Verified, though these measures according to the present invention at skilled and proactive chaufeur at it about having supported chaufeur aspect the behavior of vehicle optimal energy efficient when not enough.In addition, this method has not only been improved consumption of fuel, but also has improved driving comfort owing to car speed is more even.
Propose according to the present invention, judge the variation of resistance to motion and control to adjust this resistance to motion at least in part to change.
Propose according to the present invention, consider following factors when judging that resistance to motion changes: the variation of the road surface degree of dip on the longitudinal direction of car direction descends as liter or road surface on the road surface; The perhaps variation of weather condition, the especially ambient wind velocity of Bian Huaing; Perhaps driving conditions, the air-flow angle (Anstr mwinkel) that in the lee face (Windschatten) of other vehicle or object, changes as vehicle; And/or negotiation of bends.
Propose according to the present invention, based on the chaufeur request of acceleration pedal motion (Das Gaspedal motion) detection about even car speed.
Can be implemented under the situation that chaufeur do not notice delicately thus, control and regulation are not to be changed by the moving velocity that chaufeur causes.Do not need the technical parts that for this reason provides additional in principle.
Propose according to the present invention, when chaufeur in the predetermined amount of time that is limiting is regulated consistently or kept accelerator pedal position, will be identified as the desired speed of representing the chaufeur request by the car speed that this accelerator pedal position produces.
Propose according to the present invention, described predetermined amount of time at 1sec in the scope of 8sec, preferably about 5sec.
Propose according to the present invention, store the desired speed of described representative chaufeur request.
Propose according to the present invention, the desired speed of current vehicles speed and the request of described representative chaufeur is compared, when current vehicles speed and desired speed have deviation, vehicle is automatically quickened or slows down or brake (abbremsen), so that reduce this deviation, this is similar to the function of the cruising control that can select to carry out brake intervention substantially.
Propose according to the present invention, carry out the auto acceleration or the autobrake of vehicle like this, the consumption of fuel---as gasoline or diesel oil---that makes the driving driving engine of vehicle need is as far as possible little.
According to a further aspect in the invention, vehicle is auto acceleration or autobrake like this, that is, make to produce for comfortable as far as possible, relatively little acceleration operation of chaufeur or brake operating.
Propose according to the present invention, if the deviation of current vehicles speed and desired speed surpasses 0.2km/h to 2km/h, then vehicle is automatically quickened or is braked.
The specific embodiment
Describe the present invention in detail by means of embodiment now.
Vehicle has vehicle control and regulation unit, and this vehicle control and regulation unit can automatically influence car retardation and can automatically influence vehicle by " step on the accelerator " and/or " reducing brake-pressure " and quicken by " pine tar door " and/or " increase brake-pressure ".
Based on cognition to wishing at most of running time (particularly long-distance in service) chaufeur to travel with constant speed, support this hope of chaufeur, avoid unnecessary acceleration operation and deceleration-operation.
In the process of moving, the resistance to motion situation that normally changes of qualification may hinder the relevant constant request of travelling of chaufeur.
If chaufeur is made every effort to constant speed and (because upward slope or descending or wind etc.) resistance to motion changes lentamente, then only when comparing the significant velocity deviation of appearance (5km/h to 10km/h) with the desired speed of chaufeur chaufeur just can notice this deviation.Its reason is the frequency of speed control (monitoring rotation speed table) on the one hand, is to simulate the vision addressability of speed gage on the other hand.Equally, Running noise only changes a little under the situation of described deviation.
When chaufeur was noticed this deviation, the desired speed that he is regulated before attempting to readjust promptly, quickened vehicle.Because it is bigger that car speed and desired speed depart from, so must consume very many energy in order to readjust this desired speed.
If for example car speed raises when descent run, then remove the energy that offers system at first by the brake operating of introducing in case of necessity.
In addition, in two kinds of situations, the transient process about desired speed may make described operation more invalid.
Thus, the resistance to motion variation has multiple reason, and chaufeur only can recognize partly cause intuitively.
It is travelling on the bevelled road surface that the most tangible resistance to motion changes.In this case, little road surface degree of dip can not cause that usually chaufeur notes yet.According to the present invention, control to adjust this resistance to motion by method of the present invention and change.
Can't be changed by the second important resistance to motion of chaufeur Direct Recognition be the variation of air resistance, and this air resistance changes and may form owing to the air-flow angle of travelling in lee face or changing and/or the ambient wind velocity of variation.The method according to this invention controls to adjust this resistance to motion and changes.
Resistance to motion also increases owing to negotiation of bends reaches relevant therewith lateral deviation slip.This increase is counted as not too important.The method according to this invention also controls to adjust this resistance to motion and changes.
According to the present invention, recognize the chaufeur request of travelling with constant speed by monitoring accelerator pedal position (pedal position).
When the constant adjusting accelerator pedal position of chaufeur in 1 to 8 second (sec) and during the deviation in not considering among a small circle, regulate torque corresponding to this accelerator pedal position by control unit of engine.Wait for always, be adjusted to corresponding and no longer variation with this torque up to car speed.
Store detected subsequently speed.According to the present invention, suppose that this detected speed is desired speed.
If not this situation, then chaufeur requires bigger torque by bend the throttle.So torque is no longer constant.
Current vehicles speed is compared with the speed of being stored (desired speed) constantly.In case detect the deviation of 0.2km/h to 2km/h, then change motor torque, so that make this minimum deviation, this means on meaning of the present invention " control and regulation ".
The monitoring operation does not allow any for the tangible deviation of chaufeur.Therefore significantly reduced the invalid possibility of interference of chaufeur.
The acceleration pedal motion that surpasses 1 hertz is the swing of acceleration pedal---this means that this motion is more frequent than per second 1 time, do not think in order to change desired speed.This acceleration pedal motion is considered to disturb.
Because it is very passive that entire method of the present invention advantageously is designed to, so the short traverse time (delay) that may occur can not cause the attention of chaufeur.
Acceleration pedal motion is slowly recognized immediately, because generally this does not belong to interference, but represents new chaufeur request.
Towards the certain fast speed acceleration pedal motion of a direction and amplitude---this acceleration pedal motion finally remains on a position, recognized immediately equally and after short monitoring time, be considered to the chaufeur request.
Do not comprise whole torques that can obtain by driving engine because control and regulation torque that desired speed allowed changes, but only allow initial moment (torque that when the storage desired speed, exists) ± 10% to ± 40% torque changes.This makes chaufeur can quicken or apply pull-up torque on one's own initiative all the time.
In addition, the invention provides the limit of execution according to the speed range of function of the present invention.Main saving potentiality are present under the situation of speed higher (greater than 60km/h to 70km/h).Constant travelling than being in more frequently in this speed range under the situation of travelling in the city.Therefore, this method advantageous applications is in the situation of car speed greater than about 60km/h to 70km/h.
Claims (10)
1. a method that is used to reduce the consumption of fuel of self-propelled vehicle is characterized in that: judge the chaufeur request for even car speed; In case discern this chaufeur request for even car speed, then control and regulation are not the changes in vehicle speed that is caused by chaufeur at least in part, so that make the consumption of fuel of driving driving engine of vehicle as far as possible little.
2. method according to claim 1 is characterized in that, judges the variation of resistance to motion, and controls to adjust this resistance to motion variation at least in part.
3. method according to claim 2 is characterized in that, considers following factors when judging that resistance to motion changes: the variation of the road surface degree of dip on the longitudinal direction of car direction, as rising on the road surface or road surface decline; The perhaps variation of weather condition, the especially ambient wind velocity of Bian Huaing; Perhaps driving conditions, the air-flow angle that in the lee face of other vehicle or object, changes as vehicle; And/or negotiation of bends.
4. according to each described method in the claim 1 to 3, it is characterized in that, based on of the chaufeur request of acceleration pedal motion detection about even car speed.
5. method according to claim 4, it is characterized in that, when chaufeur in the predetermined amount of time that is limiting is regulated consistently or kept accelerator pedal position, will be identified as the desired speed of representing the chaufeur request by the car speed that this accelerator pedal position produces.
6. method according to claim 5 is characterized in that, described predetermined amount of time at 1sec in the scope of 8sec, preferably about 5sec.
7. according to claim 5 or 6 described methods, it is characterized in that, store the desired speed of described representative chaufeur request.
8. according to each described method in the claim 5 to 7, it is characterized in that, the desired speed of current vehicles speed and the request of described representative chaufeur is compared, when current vehicles speed and desired speed have deviation, vehicle is automatically quickened or slows down or brake, so that reduce this deviation.
9. method according to claim 8 is characterized in that, carries out the auto acceleration or the autobrake of vehicle like this, and the consumption of fuel---as gasoline or diesel oil---that makes the driving driving engine of vehicle need is as far as possible little.
10. according to Claim 8 or 9 described methods, it is characterized in that if the deviation of current vehicles speed and desired speed surpasses 0.2km/h to 2km/h, then vehicle is automatically quickened or brakes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10353335.4 | 2003-11-14 | ||
| DE10353335 | 2003-11-14 | ||
| DE102004048494.5 | 2004-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1882452A true CN1882452A (en) | 2006-12-20 |
Family
ID=34608994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800337109A Pending CN1882452A (en) | 2003-11-14 | 2004-11-12 | Method for reducing the fuel consumption of a motor vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1882452A (en) |
| DE (1) | DE102004048494A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102077147A (en) * | 2008-08-23 | 2011-05-25 | 宝马股份公司 | Speed control system for vehicles |
| CN102112719A (en) * | 2008-07-31 | 2011-06-29 | 富士通天株式会社 | Fuel saving driving diagnostic equipment, fuel saving driving diagnostic system, travel control apparatus, fuel saving driving grading device, and fuel saving driving diagnostic method |
| CN102564511A (en) * | 2011-12-09 | 2012-07-11 | 联合汽车电子有限公司 | Fuel-saving driving evaluation system for acceleration and deceleration processes and algorithm |
| CN105946862A (en) * | 2016-06-15 | 2016-09-21 | 中国重汽集团济南动力有限公司 | Accelerator opening degree fixing control method for AMT vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006012514A1 (en) * | 2006-03-18 | 2007-09-20 | Bayerische Motoren Werke Ag | Motor vehicle, has control unit controlling drive unit such that vehicle speed is maintained constant during constant driving mode for input signals, which are produced based on driver requirement targeting device |
| JP4466717B2 (en) | 2007-11-01 | 2010-05-26 | トヨタ自動車株式会社 | Traveling locus generation method and traveling locus generation device |
-
2004
- 2004-10-05 DE DE102004048494A patent/DE102004048494A1/en not_active Withdrawn
- 2004-11-12 CN CNA2004800337109A patent/CN1882452A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102112719A (en) * | 2008-07-31 | 2011-06-29 | 富士通天株式会社 | Fuel saving driving diagnostic equipment, fuel saving driving diagnostic system, travel control apparatus, fuel saving driving grading device, and fuel saving driving diagnostic method |
| CN102112719B (en) * | 2008-07-31 | 2014-07-30 | 富士通天株式会社 | Fuel saving driving diagnostic equipment, fuel saving driving diagnostic system, travel control apparatus, fuel saving driving grading device, and fuel saving driving diagnostic method |
| CN102077147A (en) * | 2008-08-23 | 2011-05-25 | 宝马股份公司 | Speed control system for vehicles |
| CN102077147B (en) * | 2008-08-23 | 2014-11-12 | 宝马股份公司 | Speed control system for vehicles |
| US9296392B2 (en) | 2008-08-23 | 2016-03-29 | Bayerische Motoren Werke Aktiengesellschaft | Cruise control system and method for vehicles |
| CN102564511A (en) * | 2011-12-09 | 2012-07-11 | 联合汽车电子有限公司 | Fuel-saving driving evaluation system for acceleration and deceleration processes and algorithm |
| CN102564511B (en) * | 2011-12-09 | 2015-08-19 | 联合汽车电子有限公司 | Evaluation algorithms is driven in fuel-economizing for acceleration and deceleration process |
| CN105946862A (en) * | 2016-06-15 | 2016-09-21 | 中国重汽集团济南动力有限公司 | Accelerator opening degree fixing control method for AMT vehicle |
| CN105946862B (en) * | 2016-06-15 | 2018-04-27 | 中国重汽集团济南动力有限公司 | A kind of AMT vehicles automotive throttle aperture fixes control method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004048494A1 (en) | 2005-06-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |