EP2879928A1 - Verfahren und vorrichtung zum betreiben eines fahrzeugs - Google Patents
Verfahren und vorrichtung zum betreiben eines fahrzeugsInfo
- Publication number
- EP2879928A1 EP2879928A1 EP13744994.8A EP13744994A EP2879928A1 EP 2879928 A1 EP2879928 A1 EP 2879928A1 EP 13744994 A EP13744994 A EP 13744994A EP 2879928 A1 EP2879928 A1 EP 2879928A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- speed
- coasting
- actual
- target speed
- 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.)
- Withdrawn
Links
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- 238000004590 computer program Methods 0.000 claims abstract description 7
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- 238000005096 rolling process Methods 0.000 description 16
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Classifications
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- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/0097—Predicting future conditions
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W50/16—Tactile feedback to the driver, e.g. vibration or force feedback to the driver on the steering wheel or the accelerator pedal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/146—Display 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
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/20—Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
-
- 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
- B60W2555/60—Traffic rules, e.g. speed limits or right of way
-
- 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
- B60W2556/00—Input parameters relating to data
- B60W2556/45—External transmission of data to or from the vehicle
- B60W2556/50—External transmission of data to or from the vehicle of positioning data, e.g. GPS [Global Positioning System] data
-
- 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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/103—Speed profile
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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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
-
- 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
Definitions
- the invention relates to a method and a device for operating a vehicle
- the invention further relates to a computer program.
- Laid-open GB GB 2 821 121 A discloses a method and apparatus for controlling a vehicle's handling when the vehicle approaches a stop point.
- a coasting distance is determined when the vehicle approaches the stop point.
- a signal is emitted.
- the object underlying the invention can be seen to provide a method and an apparatus for operating a vehicle, which allow an improved coasting of the vehicle.
- a method of operating a vehicle is provided. During a coasting of the vehicle, in order to obtain a route position of a route still to be traveled at a desired speed which is less than a vehicle speed for starting the coasting, a vehicle actual speed compared with a vehicle target speed, wherein an action is performed depending on the comparison.
- an apparatus for operating a vehicle is provided.
- the device comprises a comparison device, which is formed during a coasting of the vehicle to reach a distance position of a still-to-travel route with a desired speed that is less than a vehicle speed for the start of the rolling, an actual vehicle speed with to compare a vehicle target speed.
- the device comprises a controller for controlling an action depending on the comparison.
- a computer program which comprises program codes for carrying out the method for operating a vehicle when the computer program is executed in a computer.
- Such disturbances can be, for example, a tailwind or a headwind.
- Disturbing influences can be, for example, an unforeseen slope or an inclination or gradient in the course of the route.
- Interference can be, for example, a road surface with an increased or decreased rolling resistance.
- Interference may be unforeseen obstacles, such as other vehicles.
- coasting is monitored as to whether the vehicle will reach the lane position at the desired speed.
- the known methods do not take into account possible changes in track conditions and vehicle conditions. This means, in particular, that it may happen in the known methods that due to a headwind the vehicle will no longer reach the route position at the desired speed, but at a significantly lower speed.
- the line position would be reached at a higher speed than the desired speed.
- the invention monitors coasting for deviations from a predicted coasting course, with corrective measures being able to be initiated in the event of deviations, so that the desired speed, ie the desired target speed at the track position, is met as precisely as possible.
- Rolling out in the sense of the present invention refers in particular to an operation of the vehicle in which no drive power is required. This means in particular that, for example, a driver does not request drive power from a vehicle drive machine. In particular, he takes his foot off the gas pedal or does not press the accelerator pedal.
- a vehicle target speed in the sense of the present invention particularly designates a desired speed of a calculated vehicle target speed course during coasting.
- a course is calculated, in particular, to determine a start time or a start position at which the coasting starts or starts.
- This course may also be referred to as a vehicle target speed coasting course. This means, in particular, that this course defines a relationship between distance covered from the starting position and vehicle speed or a dependency between the time elapsed from the start time and the vehicle speed.
- the vehicle includes a vehicle drive machine that can provide a driving force.
- the prime mover may comprise an internal combustion engine and / or an electric motor.
- the vehicle comprises a transmission device for transmitting the driving force formed by the vehicle drive engine to a vehicle environment for a movement of the vehicle.
- the transmission means may comprise one or more wheels which transmit the driving force to a road to move the vehicle. Such wheels may preferably be referred to as drive wheels.
- a propeller and / or a nozzle can be provided which can transmit the driving force to the vehicle environment, in this case air.
- the vehicle drive engine can be coupled to the transmission device, so that the drive force can be transmitted from the vehicle drive engine to the transmission device and from there to the vehicle environment.
- the vehicle drive machines and the transmission device can be coupled to one another and also decoupled from one another. That means, in particular, that an active connection can be formed between the vehicle drive engine and the transmission device, wherein this active connection can also be separated again.
- a coasting of the vehicle in particular for starting the coasting, can be provided according to an embodiment that the vehicle drive machine and the transmission device are decoupled from each other.
- a decoupled state may also be referred to as a sailing condition.
- the vehicle drive machine and the transmission device are coupled together.
- the vehicle tows the engine of the vehicle or the vehicle drive machine. This may also be referred to as coasting with a motor drag torque.
- the action comprises the issuing of an indication for a corrective action in order to reach the route position at the desired speed.
- a driver is advantageously enabled to take and carry out corresponding corrective measures in order to reach the route position at the desired speed. This especially if there are disturbing influences. The driver thus retains control over the vehicle guidance and can independently decide whether he considers it useful to carry out the corrective measures or not.
- the indication may be an optical indication, an acoustic indication or a haptic indication.
- several instructions may be provided, which may be formed in particular the same or, for example, different.
- a display system comprising a projector can be provided, which projects the reference to a window pane of the vehicle, in particular, it can be the front window of the vehicle, so that the driver gets the instructions projected into his field of vision.
- An optical indication can be output, for example, via a display device.
- a haptic indication may preferably be provided to apply an accelerator pedal, in particular a clutch pedal, an accelerator pedal or a brake pedal, by means of a pulse. This means, in particular, that the accelerator pedal is automatically actuated briefly so as to signal the driver via his foot in a haptic manner that he has to operate the accelerator pedal independently.
- the action includes an automatic intervention in a vehicle operation to the route position to reach with the desired speed.
- a driver is advantageously relieved from carrying out the necessary measures required to reach the route position at the desired speed. He can thus concentrate on monitoring the traffic in an advantageous manner. This is advantageously a
- the automatic vehicle intervention when the actual vehicle speed is less than the target vehicle speed, the automatic vehicle intervention may be the vehicle drive machine and the transmission means for transmitting a driving force generated by the vehicle drive machine to a vehicle environment for movement of the vehicle Vehicles are decoupled from each other.
- the vehicle drive engine and the transmission device are coupled together as an automatic intervention.
- the decoupling of the vehicle drive machine from the transmission device in particular causes a rolling resistance of the vehicle to decrease, so that a vehicle actual speed decreases slower / later during the further coasting.
- the coupling of the vehicle drive machine with the transmission device causes in particular that increases a rolling resistance of the vehicle.
- Changing the delay or acceleration causes, depending on whether or not Moves the vehicle too fast or too slow compared to the target vehicle speed.
- an electrical generator which is designed to form or provide an electrical power, wherein the electric generator can be coupled to a drive train of the vehicle. This means in particular that the electric generator can be decoupled from the drive train and coupled with it.
- the electric power of the electric generator is increased as an automatic intervention.
- the electric generator is decoupled or decoupled from the drive train.
- the electric generator can be switched off. This means, in particular, that the electric generator no longer generates electrical power.
- the generated electric power is here 0.
- the electric generator is switched to an electric motor operating mode, in which the electric generator can provide a driving force. This causes in particular a compensation of the increased driving resistance to the effect that the vehicle rolls over a longer distance or with a reduced speed drop.
- Increasing the electric power of the electric generator when the actual vehicle speed is greater than the vehicle target speed advantageously causes the driving resistance to be increased.
- the electrical energy obtained thereby can be stored, for example.
- the electrical energy thus generated can also be used for other electrical consumers of the vehicle for the purpose of consumption.
- the electric generator is turned on when it was previously turned off. It can be provided in particular to increase the electrical power, that the generator is coupled to the drive train, when the generator was previously decoupled from the drive train.
- the start of the coasting is calculated on the assumption that the vehicle is coasting in a coasting mode in which the vehicle propulsion machine is towed by the vehicle and in which the generated electric power is less than or equal to a predetermined maximum power in that, as the only actions of the automatic intervention, when the actual vehicle speed is lower than the vehicle target speed, the vehicle drive engine and the transmission device are decoupled from one another, and, if the actual vehicle speed is greater than the vehicle speed.
- Target speed is the electric power of the electric generator is increased.
- single actions means that no further actions other than the above-mentioned actions are performed in this embodiment, so that only the above-mentioned actions are performed, in particular, that the coasting operation does not become too long especially advantageous because too long Ausrollvor réelle for many drivers are unacceptable.
- the generator can be switched on or the power can be increased if the actual vehicle speed is greater than the vehicle setpoint speed.
- the vehicle drive machine is decoupled from the transmission device or reduced or reduced power.
- the comparison includes a calculation during coasting, with which probable actual vehicle speed the vehicle will reach the route position, and wherein the prospective vehicle actual speed is at the desired speed as the vehicle target speed.
- Speed is compared. so that means in particular, that here the actual vehicle speed is an estimated actual vehicle speed at the track position.
- the estimated vehicle target speed is calculated.
- This estimated actual vehicle speed is compared with the desired speed, which is the target vehicle speed at the track position. Depending on the comparison, that is, whether the estimated actual vehicle speed is greater or less than the desired speed, then a corresponding action is performed.
- Fig. 7 shows a device for operating a vehicle.
- FIG. 1 shows a rolling-out of a vehicle 101.
- the vehicle 101 is traveling on a road at a speed of 100 km / h.
- the vehicle 101 for example, is approaching a speed limit sign 102, which shows a speed limit of 50 km / h.
- the vehicle 101 should therefore have a desired speed of 50 km / h.
- the target vehicle speed at this position should therefore be 50 km / h.
- the position of the speed limit sign 102 is thus a distance position of a still to be traveled driving distance of the vehicle 101, at which the desired speed is to be achieved. This span position may also be referred to as a roll-out event.
- a speed profile of the vehicle can be described, for example, as a function of a time t, denoted by reference numeral 103 here as V (t).
- the speed profile of the vehicle 101 may preferably be described as a function of a distance s, here denoted by reference numeral 104 as V (s).
- a hydraulic brake is not actuated during coasting.
- FIG. 2 shows a calculated course of a desired vehicle speed as a function of a time t in seconds.
- a vehicle speed 201 in km / h is plotted.
- the abscissa shows the time 1 207 in seconds.
- the vehicle has a vehicle speed 202, also referred to as an initial speed, of 100 km / h and should optimally be at the desired speeds or target speeds 203 of 50 km / h according to the
- the theoretical course can also be dynamically recalculated during coasting, in particular constantly dynamically recalculated, so that advantageously updated, prospective actual vehicle speed profiles are calculated at the location of the coasting event 102, in which case the estimated actual vehicle speed at the location of coast event 102 at the desired speed (target speed) at coastdown event 102 (in the example 50km / h of FIGS. 1 and 2).
- FIG. 3 shows a calculated course of a vehicle speed as a function of a distance s.
- the vehicle speed 201 is plotted in km / h per hour.
- the distance or the distance s which covers the vehicle, plotted in meters and designated by the reference numeral 301.
- the rolling-out process that is to say the start of rolling out, is initiated at a location S1 by the reference numeral 302.
- the vehicle 101 reaches the target speed of 50 km / h at a location S2 with the reference numeral 303.
- the location S2 should ideally coincide with the position of the speed limit sign 102.
- a Ausrollgeschwindig- keitsverlauf an ideal vehicle with trailing engine is usually in a first Nährung a straight line 304.
- This line 304 thus identifies the theoretical course of the actual vehicle speed and thus forms the course of a vehicle target speed, with the vehicle actual speed is compared.
- the theoretical curve 304 can also be recalculated dynamically during coasting, in particular constantly recalculated, so that then a presumed vehicle actual speed at the location S2 of the coasting event with the vehicle target Speed at this location (in the example 50km / h) is compared.
- the optimum coasting start position S1 is calculated by the reference numeral 302 or the optimal coasting start time t1 is designated by the reference numeral 204.
- 4 shows a flowchart of a method for operating a vehicle, which may allow such a calculation.
- a step 401 for example, the optimal coasting start time 204 or the optimal coasting start position 302 is calculated.
- information about a vehicle environment is preferably provided beforehand in a step 402.
- This can be done for example by means of a navigation system comprising a digital map.
- the digital map usually contains speed-limiting elements such as the speed limit sign 102 and road slopes and road gradients.
- the navigation system is arranged in the vehicle.
- the navigation system communicates with the vehicle or the device by means of a wireless interface via an external server.
- a vehicle state may include, for example, an actual vehicle speed, a transmission state and / or a position of the vehicle.
- the aforementioned information can, for example, by means of vehicle sensors such as a
- GPS receivers, speed sensors on the brake and sensors in the transmission are detected and provided.
- an optimal coasting start time 204 and / or an optimal coasting start position 302 can then be determined in step 401.
- a step 404 for example, an indication to the driver that he must now take his foot off the gas pedal or demand no further drive power.
- a Step 405 activates a device for operating a vehicle which automatically initiates coasting. This means in particular that then automatically a possible request for a drive power by the driver is ignored.
- the vehicle may be automatically operated in a sail mode or a coast mode.
- step 404 it may be provided that the indication is output by means of a graphic display in a combination instrument.
- a haptic feedback such as a pulse on the accelerator pedal, is output to the driver.
- step 405 it may be provided that the device for operating a vehicle is included in an automatic cruise control device, which performs an automatic set speed reduction in accordance with the pre-calculated curves according to FIGS. 2 and 3.
- the coasting curves 206 and 304 will be subject to a variety of influences that can not be calculated in advance in section 401.
- An example of this is the influence of the air movement. This is usually not known to the vehicle. Strong back or headwinds, such as gusts of wind, can significantly influence the coasting process.
- Another example is errors in the navigation database of the navigation system according to step 402. Gradients or gradients have a significant influence on the course of the coasting curve. Although this information can be provided via a navigation system. However, the data may have errors.
- Vehicle sensors such as GPS-based position determination according to step 403, may result in errors, for example due to satellite shading or multipath reception.
- a first coasting indication ie the output of the indication or the automatic intervention in the vehicle guidance
- time t2 with the reference numeral 205 or Position S2 with the reference numeral 303 to carry out a continuous monitoring of the coasting and perform corrective action in case of deviations.
- two further method steps 501 and 502 are provided.
- a vehicle actual speed at a time t and / or at a location s is compared with a corresponding desired vehicle speed of the curve 206 according to FIG. 2 or the curve 304 according to FIG. 3. It is thus advantageously checked whether the vehicle 101 rolls out according to the precalculated curves 206 and 304.
- step 501 If it is determined in step 501 that a deviation occurs, that is to say that an actual vehicle speed is greater or less than a corresponding desired vehicle speed at the same location or at the same time relative to the two coasting curves 206 and 304, actions are determined in step 502 that may include corrective action. For example, an indication to the driver can be issued in the form of recommendations. This is communicated in step 404. Furthermore, these corrective measures can be implemented according to the step 405 by means of the device for operating the vehicle 101.
- step 501 it may preferably be provided in step 501 to form a differential speed.
- the desired rolling curve v calculated in method step 401 is given as n (t) 206 or v so n (s)
- step 501 this is constantly compared with the actual vehicle speed, that is to say the vehicle actual speed, v ist (t) at time t or v ist (s) at location s.
- the resulting differential velocity v D iffe r enz (t) v is (t) -v s0
- i (t) or v Di ffe re nz (s) v is (s) -v s0
- i (s) can be used in the further method step 502 for determining corrective measures, which are implemented in steps 404 and 405 into reality.
- step 502 corrective measures are now determined in order to reduce the driving resistance during the coasting process.
- Particularly advantageous embodiments which may be provided individually or in combination, in a rolling vehicle are:
- an electric generator in particular a regulated electric generator.
- This can either be a normal 14V generator and / or a generator, in particular a very powerful generator, a recuperating start / stop system. In this case, any working generator is switched off or reduced in its power to reduce the driving resistance. All other electric generators, such as drive motors of a hybrid vehicle or electric vehicle operating in recuperation mode, are also suitable for this purpose.
- the generator can preferably also be switched over to boost operation in order to partially compensate the overall travel resistance by means of electric drive
- step 502 corrective measures are now determined in order to increase the driving resistance during the coasting process.
- Particularly advantageous embodiments which may be provided individually or in combination, in a rolling vehicle are:
- an electric generator in particular a regulated electric generator.
- This can either be a normal 14V generator and / or an electric generator, preferably a very powerful generator, a recuperating start / stop system.
- a not working in the coasting phase generator is turned on or increased in its power output to increase the driving resistance.
- all other electric generators such as driving in recuperation mode drive motors of
- Hybrid vehicles or electric vehicles can be used for this purpose.
- the coasting process is always calculated with a dragging engine but without a recuperative generator drive (or with a recuperative generator operation with low recuperation power). If the current vehicle speed, ie the instantaneous actual vehicle speed, deviates upward relative to the pre-calculated coasting speed (driving resistance too low), the recuperative generator mode can be switched on or
- Rekuperations can be increased, the driving resistance increases. If the current driving speed, ie the instantaneous actual vehicle speed, deviates downward compared to the predicted coasting speed (driving resistance too high), the engine is disconnected from the drive train (starting a sailing phase).
- the coasting process can be influenced in both directions without loss of driving energy.
- Fig. 5 shows a flowchart of another method for operating a vehicle.
- the above-described method step 501 according to FIG. 4 is changed to a method step 601.
- the coasting curves 206 and / or 304 calculated according to step 401 are updated at least once, preferably several times, that is, in particular continuously. So there is a recalculation, in particular a more or less frequent recalculation, the curves 206 and / or 304 instead.
- step 601 it is then compared at which target speed the vehicle is expected to arrive in coasting event 102.
- the actual vehicle speed here is an estimated vehicle actual speed.
- the measures for increasing or decreasing the road resistance described above in connection with FIG of the Ausrollvorgangs determined.
- the measures for increasing or decreasing the road resistance described above in connection with FIG of the Ausrollvorgangs determined.
- Fig. 6 shows a flowchart of another method for operating a vehicle. According to a step 605, during a coasting of the vehicle to a
- a vehicle actual speed compared with a vehicle target speed. According to a step 607, an action is performed depending on the comparison.
- FIG. 7 shows a device 701 for operating a vehicle (not shown).
- the device 701 includes a comparison device 703, which is formed during coasting of the vehicle to reach a distance position of a still-to-travel route at a desired speed, the smaller is a vehicle speed for starting the coasting to compare a vehicle actual speed with a vehicle target speed.
- the device 701 further includes a controller 705 for controlling an action depending on the comparison.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Human Computer Interaction (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Transmission Device (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012213321.6A DE102012213321A1 (de) | 2012-07-30 | 2012-07-30 | Verfahren und Vorrichtung zum Betreiben eines Fahrzeugs |
PCT/EP2013/065192 WO2014019866A1 (de) | 2012-07-30 | 2013-07-18 | Verfahren und vorrichtung zum betreiben eines fahrzeugs |
Publications (1)
Publication Number | Publication Date |
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EP2879928A1 true EP2879928A1 (de) | 2015-06-10 |
Family
ID=48915994
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EP13744994.8A Withdrawn EP2879928A1 (de) | 2012-07-30 | 2013-07-18 | Verfahren und vorrichtung zum betreiben eines fahrzeugs |
Country Status (6)
Country | Link |
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US (1) | US9994223B2 (de) |
EP (1) | EP2879928A1 (de) |
CN (1) | CN104507780B (de) |
DE (1) | DE102012213321A1 (de) |
IN (1) | IN2014DN09259A (de) |
WO (1) | WO2014019866A1 (de) |
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2012
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-
2013
- 2013-07-18 CN CN201380040196.0A patent/CN104507780B/zh active Active
- 2013-07-18 US US14/418,580 patent/US9994223B2/en not_active Expired - Fee Related
- 2013-07-18 WO PCT/EP2013/065192 patent/WO2014019866A1/de active Application Filing
- 2013-07-18 EP EP13744994.8A patent/EP2879928A1/de not_active Withdrawn
- 2013-07-18 IN IN9259DEN2014 patent/IN2014DN09259A/en unknown
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See also references of WO2014019866A1 * |
Also Published As
Publication number | Publication date |
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WO2014019866A1 (de) | 2014-02-06 |
US20150298699A1 (en) | 2015-10-22 |
IN2014DN09259A (de) | 2015-07-10 |
US9994223B2 (en) | 2018-06-12 |
DE102012213321A1 (de) | 2014-01-30 |
CN104507780A (zh) | 2015-04-08 |
CN104507780B (zh) | 2019-05-21 |
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