DE102019103063B3 - Method for performing an emergency braking function of a vehicle - Google Patents
Method for performing an emergency braking function of a vehicle Download PDFInfo
- Publication number
- DE102019103063B3 DE102019103063B3 DE102019103063.3A DE102019103063A DE102019103063B3 DE 102019103063 B3 DE102019103063 B3 DE 102019103063B3 DE 102019103063 A DE102019103063 A DE 102019103063A DE 102019103063 B3 DE102019103063 B3 DE 102019103063B3
- Authority
- DE
- Germany
- Prior art keywords
- vehicle
- speed
- parking lock
- braking torque
- electric motor
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/08—Brake-action initiating means for personal initiation hand actuated
- B60T7/085—Brake-action initiating means for personal initiation hand actuated by electrical means, e.g. travel, force sensors
Abstract
Die Erfindung betrifft ein Verfahren zur Ausführung einer Notbremsfunktion eines Fahrzeuges, bei welchem das Fahrzeug eine Parksperre (9) umfasst. Bei einem Verfahren, bei welchem eine kostengünstige Notbremsfunktion im Fahrzeug ermöglicht wird, wird bei Betätigung eines Bedienelementes (8) zum Einlegen der Parksperre (9) ein in eine Getriebeeinheit (3) zum Antrieb des Fahrzeugs integrierter Elektromotor (5) zur Erzeugung eines Bremsmomentes angesteuert, welches auf Antriebsräder (6) des Fahrzeuges übertragen wird.The invention relates to a method for performing an emergency braking function of a vehicle, in which the vehicle comprises a parking lock (9). In a method in which an inexpensive emergency braking function is made possible in the vehicle, when an operating element (8) is inserted to engage the parking lock (9), an electric motor (5) integrated in a transmission unit (3) for driving the vehicle is actuated to generate a braking torque , which is transmitted to the drive wheels (6) of the vehicle.
Description
Die Erfindung betrifft ein Verfahren zur Ausführung einer Notbremsfunktion eines Fahrzeuges, bei welchem das Fahrzeug eine Parksperre umfasst.The invention relates to a method for performing an emergency braking function of a vehicle, in which the vehicle comprises a parking lock.
Aus der
Eine solche elektronische Parkbremse stellt somit zur Betriebsbremse eine zusätzliche separate Bremse im Fahrzeug dar. Eine Notbremsfunktion kann durch diese Parkbremse aber nicht realisiert werden.Such an electronic parking brake thus represents an additional separate brake in the vehicle in addition to the service brake. However, an emergency braking function cannot be implemented by this parking brake.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Ausführung einer Notbremsfunktion eines Fahrzeuges anzugeben, bei welchem neben der Betriebsbremse auf einen zusätzlichen Hardware-Aufwand verzichtet wird.The invention is based on the object of specifying a method for performing an emergency braking function of a vehicle, in which, in addition to the service brake, no additional hardware expenditure is required.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass bei Betätigung eines Bedienelementes zum Einlegen der Parksperre ein in eine Getriebeeinheit zum Antrieb des Fahrzeuges integrierter Elektromotor zur Erzeugung eines Bremsmomentes angesteuert wird, welches auf Antriebsräder des Fahrzeuges übertragen wird. Dadurch werden an sich im Fahrzeug vorhandene Baueinheiten zur Ausführung einer Notbremsfunktion genutzt. Es ist lediglich eine Softwareänderung notwendig, um diese Notbremsfunktion in der Getriebeeinheit auszuführen. Der Verzicht auf zusätzlichen Hardwareaufwand reduziert die Kosten für die Ausführung des Verfahrens.According to the invention, the object is achieved in that when an operating element for engaging the parking lock is actuated, an electric motor integrated in a transmission unit for driving the vehicle is actuated to generate a braking torque which is transmitted to the drive wheels of the vehicle. As a result, existing structural units in the vehicle are used to carry out an emergency braking function. Only a software change is necessary to carry out this emergency braking function in the gear unit. Dispensing with additional hardware expenditure reduces the costs for executing the method.
Vorteilhafterweise wird der Elektromotor der Getriebeeinheit zur Erzeugung des Bremsmomentes angesteuert, wenn eine Geschwindigkeit des Fahrzeuges einen vorgegebenen Geschwindigkeitsschwellwert überschreitet. Damit wird sichergestellt, dass die Funktionalitäten zur Einstellung des Bremsmomentes bzw. zur Betätigung der Parksperre deutlich unterschieden werden können.The electric motor of the gear unit is advantageously activated to generate the braking torque when a speed of the vehicle exceeds a predetermined speed threshold. This ensures that the functionalities for setting the braking torque or actuating the parking lock can be clearly differentiated.
In einer Ausgestaltung wird das Bremsmoment solange erzeugt, solange das Bedienelement der Parksperre betätigt wird. Somit übt der Fahrer, welcher das Bedienelement der Parksperre betätigt, einen Einfluss auf die Ausführung der Notbremsfunktion aus.In one embodiment, the braking torque is generated as long as the control element of the parking lock is actuated. The driver who operates the parking lock control element thus exerts an influence on the execution of the emergency braking function.
In einer Variante wird zur Bestimmung der Geschwindigkeit des Fahrzeuges eine von den Antriebsrädern bestimmte Drehzahl einer Getriebeausgangswelle verwendet. In dem Getriebesteuergerät kann somit unabhängig von anderen Signalen des Fahrzeuges die Fahrzeuggeschwindigkeit ermittelt werden, was eine autarke Auslösung des Bremsmomentes gewährleistet.In one variant, a speed of a transmission output shaft determined by the drive wheels is used to determine the speed of the vehicle. The vehicle speed can thus be determined in the transmission control unit independently of other signals of the vehicle, which ensures an autonomous triggering of the braking torque.
In einer Alternative wird zur Bestimmung der Geschwindigkeit des Fahrzeuges eine Raddrehzahl verwendet. Ein solches Signal für die Raddrehzahl ist im Fahrzeug vorhanden und kann aus einer dem Getriebesteuergerät übergeordneten Steuerungsebene an das Getriebesteuergerät ausgegeben werden, wodurch die Kosten für das Verfahren verringert werden.In an alternative, a wheel speed is used to determine the speed of the vehicle. Such a signal for the wheel speed is present in the vehicle and can be output to the transmission control unit from a control level higher than the transmission control unit, thereby reducing the costs for the method.
Eine besonders sichere Notbremsfunktion wird gewährleistet, wenn bei der Erzeugung des Bremsmomentes eine ABS-Funktionalität an den Antriebsrädern eingestellt wird. Mittels dieser ABS-Funktionalität, mittels welcher der Bremsvorgang in verschiedene Intervalle aufgeteilt wird, wird das Fahrzeug in seiner Spur gehalten und somit eine sichere Bremsung ermöglicht.A particularly safe emergency braking function is guaranteed if an ABS functionality is set on the drive wheels when the braking torque is generated. This ABS functionality, by means of which the braking process is divided into different intervals, keeps the vehicle in its lane and thus enables safe braking.
In einer Ausführungsform wird der Elektromotor zur Erzeugung des Bremsmomentes bei Ausfall einer Betriebsbremse angesteuert. Somit wird einfach eine zusätzliche Bremse im Fahrzeug realisiert, welche einen sicheren Bremsvorgang gewährleistet, wenn die Betriebsbremse nicht aktiviert werden kann.In one embodiment, the electric motor is activated to generate the braking torque in the event of a service brake failure. In this way, an additional brake is simply implemented in the vehicle, which ensures a safe braking process if the service brake cannot be activated.
In einer Ausgestaltung wird die Parksperre eingelegt, wenn die Geschwindigkeit des Fahrzeuges den vorgegebenen Geschwindigkeitsschwellwert unterschreitet. Durch den Geschwindigkeitsschwellwert wird genau ermittelt, ob der Fahrzeugführer beabsichtigt, das Fahrzeug zu parken oder die Notbremsfunktion auszuführen.In one embodiment, the parking lock is engaged when the speed of the vehicle falls below the predetermined speed threshold. The speed threshold determines exactly whether the driver intends to park the vehicle or to carry out the emergency braking function.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Eine davon soll anhand der in der Zeichnung dargestellten Figuren näher erläutert werden.The invention permits numerous embodiments. One of these will be explained in more detail with reference to the figures shown in the drawing.
Es zeigt:
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1 ein Ausführungsbeispiel eines Fahrzeugantriebes zur Durchführung des Verfahrens. -
2 ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens.
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1 an embodiment of a vehicle drive for performing the method. -
2nd an embodiment of the method according to the invention.
In
Zur Ausführung einer Notbremsfunktion, welche anhand
BezugszeichenlisteReference symbol list
- 11
- FahrzeugantriebVehicle drive
- 22nd
- FahrzeugachseVehicle axle
- 33rd
- GetriebeblockGear block
- 44th
- Getriebetransmission
- 55
- ElektromotorElectric motor
- 66
- AntriebsräderDrive wheels
- 77
- GetriebesteuergerätTransmission control unit
- 88th
- BedienelementControl element
- 99
- ParksperreParking lock
- 1010th
- FahrzeugsteuergerätVehicle control unit
- 1111
- CAN-BusCAN bus
- 1212
- RaddrehzahlsensorWheel speed sensor
- 1313
- DrehzahlsensorSpeed sensor
- 1414
- GetriebeausgangswelleTransmission output shaft
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019103063.3A DE102019103063B3 (en) | 2019-02-07 | 2019-02-07 | Method for performing an emergency braking function of a vehicle |
PCT/DE2019/101087 WO2020160718A1 (en) | 2019-02-07 | 2019-12-13 | Method for carrying out an emergency braking function of a vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019103063.3A DE102019103063B3 (en) | 2019-02-07 | 2019-02-07 | Method for performing an emergency braking function of a vehicle |
Publications (1)
Publication Number | Publication Date |
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DE102019103063B3 true DE102019103063B3 (en) | 2020-06-18 |
Family
ID=69167553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102019103063.3A Active DE102019103063B3 (en) | 2019-02-07 | 2019-02-07 | Method for performing an emergency braking function of a vehicle |
Country Status (2)
Country | Link |
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DE (1) | DE102019103063B3 (en) |
WO (1) | WO2020160718A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005029567A1 (en) | 2004-06-30 | 2006-02-02 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Parking brake for vehicle with automatic transmission gear, automatically activated when driver switches into parking mode |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2349978B1 (en) * | 2009-05-21 | 2011-11-07 | F. Javier Porras Vila | INERTIA REDUCTION BRAKE. |
CN102582416B (en) * | 2012-02-16 | 2015-05-13 | 吉林大学 | Full line control electric vehicle with variable kinetic characteristics |
JP2015193357A (en) * | 2014-03-25 | 2015-11-05 | Ntn株式会社 | Electrically-driven type brake system, vehicle with electrically-driven type brake system mounted thereon, and method for controlling electrically-driven type brake system |
DE102015212109A1 (en) * | 2015-06-30 | 2017-01-05 | Continental Teves Ag & Co. Ohg | Method for carrying out an emergency braking function by means of an electromechanical parking brake of a vehicle |
KR101860936B1 (en) * | 2016-03-25 | 2018-07-05 | 디와이 주식회사 | Break control apparatus and method for substituting hydraulic brake in electric vehicle |
US10377353B2 (en) * | 2016-08-16 | 2019-08-13 | Ford Global Technologies, Llc | Park lock system for a hybrid electric vehicle |
CN109229079B (en) * | 2018-09-12 | 2023-09-05 | 佛山市格美清洁设备有限公司 | Electric vehicle drive axle with brake and parking function |
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2019
- 2019-02-07 DE DE102019103063.3A patent/DE102019103063B3/en active Active
- 2019-12-13 WO PCT/DE2019/101087 patent/WO2020160718A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005029567A1 (en) | 2004-06-30 | 2006-02-02 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Parking brake for vehicle with automatic transmission gear, automatically activated when driver switches into parking mode |
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WO2020160718A1 (en) | 2020-08-13 |
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