DE10246298A1 - Control system for automatic transmission for road vehicle, allows switching of supplementary gearbox from high to low range while moving with given increase in engine speed during given time - Google Patents
Control system for automatic transmission for road vehicle, allows switching of supplementary gearbox from high to low range while moving with given increase in engine speed during given time Download PDFInfo
- Publication number
- DE10246298A1 DE10246298A1 DE10246298A DE10246298A DE10246298A1 DE 10246298 A1 DE10246298 A1 DE 10246298A1 DE 10246298 A DE10246298 A DE 10246298A DE 10246298 A DE10246298 A DE 10246298A DE 10246298 A1 DE10246298 A1 DE 10246298A1
- Authority
- DE
- Germany
- Prior art keywords
- drive system
- correction
- drive
- speed
- vehicle 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.)
- Granted
Links
Classifications
-
- 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
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- 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
- B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
- B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
- B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
-
- 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
- B60K31/06—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 fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure
- B60K31/10—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 fluid pressure actuated servomechanism in which the vehicle velocity affecting element is actuated by fluid pressure 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 a pressure which is fed into the controlling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/70—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
-
- 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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/04—Hill descent control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2312/00—Driving activities
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Ansteuern eines Antriebssystems und ein Antriebssystem für über zwei Antriebsachsen antreibbare Fahrzeuge mit einem automatischen Schaltgetriebe und mit einem nachgeschalteten beim Fahren schaltbaren Verteilergetriebe zur Aufteilung der Antriebsleistung auf die Antriebsachsen.The invention relates to a method to control one drive system and one drive system for more than two Drive axles drivable vehicles with an automatic gearbox and with a downstream transfer case that can be shifted while driving to distribute the drive power to the drive axles.
Über
zwei Antriebsachsen antreibbare allradgetriebene geländegängige Straßenfahrzeuge weisen
häufig
ein Antriebssystem mit einem automatischen Schaltgetriebe und einem
nachgeschalteten beim Fahren schaltbaren Verteilergetriebe zur Aufteilung
der Antriebsleistung auf die Antriebsachsen auf. Das Verteilergetriebe
hat typischerweise zwei Übersetzungen,
nämlich
eine Langsamfahrstufe L (Low Range) für Geländefahrten und eine Schnellfahrstufe N
(High Range) für
Straßenfahrten.
Dabei ist es möglich,
daß etwa
mit einer Getriebeanordnung gemäß der
In der
Die zuvor genannten Ausführungen verdeutlichen, daß die derzeit im Stand der Technik realisierten Schaltvorgänge noch nicht optimal sind.The aforementioned statements make it clear that the Switching operations currently still implemented in the prior art are not optimal.
Der Erfindung liegt daher die Aufgabe zugrunde, daß beim Schalten zwischen Stufen eines Verteilergetriebes an Steigungs- oder Gefällestrecken unzulässige Fahrzustände des Fahrzeugs verhindert sind.The invention is therefore the object based on the fact that Switch between stages of a transfer case on incline or slopes unacceptable driving conditions of the vehicle are prevented.
Diese zuvor genannte Aufgabe wird nach der Erfindung – für das Verfahren – dadurch gelöst, daß während eines Schaltvorgangs des Verteilergetriebes eine automatische Korrektur der Fahrzeuggeschwindigkeit erfolgt. Für das Antriebssystem wird die zuvor genannte Aufgabe dadurch gelöst, daß das Antriebssystem weiterhin eine Steuerung aufweist, die während eines Schaltvorgangs des Verteilergetriebes eine automatische Korrektur der Fahrzeuggeschwindigkeit bewirkt.This aforementioned task will according to the invention - for the method - thereby solved, that during a Shifting the transfer case an automatic correction the vehicle speed. For the drive system, the previously mentioned object achieved in that the drive system continues has a controller that during an automatic correction of a switching operation of the transfer case the vehicle speed.
Nach dem erfindungsgemäßen Verfahren zum Ansteuern eines Antriebssystems für über zwei Antriebsachsen antreibbare Fahrzeuge mit einem automatischen Schaltgetriebe und einem nachgeschalteten beim Fahren schaltbaren Verteilergetriebe zur Aufteilung der Antriebsleistung auf die Antriebsachsen erfolgt während eines Schaltvorgangs des Verteilergetriebes eine automatische Korrektur der Fahrzeuggeschwindigkeit. Das erfindungsgemäße Antriebssystem weist eine Steuerung auf, die während eines Schaltvorgangs des Verteilergetriebes eine automatische Korrektur der Fahrzeuggeschwindigkeit bewirkt. Die während des Schaltvorgangs, also in dem Zeitintervall der Zugkraftunterbrechung vorgenommene Korrektur der Fahrzeuggeschwindigkeit hält das Fahrzeug in einem zulässigen Fahrzustand. Bei einer Fahrzeuggeschwindigkeit unterhalb der maximal zulässige Fahrzeuggeschwindigkeit vmax in der Langsamfahrstufe L kann der Fahrer beim Fahren zwischen der Langsamfahrstufe L und der Schnellfahrstufe H hin und her schalten (Shift on the Move), ohne daß das Fahrzeug bei Gefälle- und Steigungsfahrten in einen unzulässigen Fahrzustand gelangt. Bei einer Gefällefahrt wird vermieden, daß während des Schaltvorgangs aufgrund der dann fehlenden Motorbremswirkung die maximal zulässige Fahrzeuggeschwindigkeit vmax in der Langsamfahrstufe L überschritten wird, und der Schaltvorgang kann einwandfrei beendet werden. Bei Steigungsfahrten wird vermieden, daß während des Schaltvorgangs aufgrund der dann fehlenden Antriebsleistung das Fahrzeug zum Stillstand kommt und dann die Geschwindigkeitsrichtung wechselt. Ein Rückwärtsrollen wird dadurch verhindert.According to the inventive method for controlling a drive system for vehicles drivable via two drive axles with an automatic gearbox and a downstream transfer case which can be shifted while driving to distribute the drive power to the drive axles, the vehicle speed is automatically corrected during a shifting operation of the transfer case. The drive system according to the invention has a control which effects an automatic correction of the vehicle speed during a switching operation of the transfer case. The correction of the vehicle speed carried out during the switching process, that is to say in the time interval of the interruption of the tractive force, keeps the vehicle in a permissible driving state. At a vehicle speed below the maximum permissible vehicle speed v max in slow speed level L, the driver can switch between slow speed level L and high speed level H while driving (shift on the move) without the vehicle entering an impermissible downhill and uphill gradient Driving state reached. When driving down a slope, it is avoided that the maximum permissible vehicle speed v max in the slow speed stage L is exceeded during the gearshift operation due to the lack of engine braking effect, and the gearshift operation can be ended properly. When driving uphill, it is avoided that the vehicle comes to a standstill and then changes the direction of speed during the shifting process due to the lack of drive power. This prevents it from rolling backwards.
Durch die erfindungsgemäße Ausgestaltung des Verfahrens zum Ansteuern eines Antriebssystems und des entsprechenden Antriebssystem derart, daß die Korrektur der Fahrzeuggeschwindigkeit durch einen aktiven Bremseingriff, insbesondere durch aktives Bremsen von Fahrzeugrädern erfolgt, kann ein in gattungsgemäßen Fahrzeugen typischerweise vorhandenes elektronisches Radbremssystem wie ein Antiblockiersystem, ein Antischlupfsystem oder ein elektronischen Stabilisierungssystem genutzt werden.The inventive design of the method for controlling a drive system and the corresponding drive system such that the vehicle speed is corrected by an active braking intervention, in particular by active braking of vehicle wheels, an electronic wheel brake system typically present in generic vehicles such as an anti-lock braking system, an anti-slip system or an electronic stabilization system can be used.
Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen und aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele anhand der Zeichnungen. In der Zeichnung zeigt:Other advantages and details the invention result from the dependent claims and from the following Description of preferred embodiments based on the drawings. The drawing shows:
Im Folgenden wird von einem zwei Antriebsachsen antreibbaren Fahrzeug mit einem automatischen Schaltgetriebe mit den Getriebestufen P, R, N und D entsprechend Parkstellung, Rückwärts, Neutral und Vorwärts ausgegangen. Denkbar ist auch ein automatisiertes Schaltgetriebe. Dem automatischen Schaltgetriebe ist dabei nachgeschaltet ein beim Fahren schaltbares Verteilergetriebe zur Aufteilung der Antriebsleistung auf die Antriebsachsen mit den Fahrstufen Langsamfahrstufe L, Neutralfahrstufe N und Schnellfahrstufe H. Das Fahrzeug weist ein erfindungsgemäßes Antriebssystem mit einem Steuersystem und einem elektronischen Stabilisierungssystem ESP auf, welches zur erfindungsgemäßen Korrektur der Fahrzeuggeschwindigkeit eingesetzt wird. Das Steuersystem weist vzw. ein elektronisches Steuergerät auf.Below is one of two Drive axles drivable vehicle with an automatic transmission with gear stages P, R, N and D according to park position, Reverse, neutral and forward went out. An automated manual transmission is also conceivable. The automatic transmission is connected downstream when driving switchable transfer case for the distribution of the drive power on the drive axles with the speed levels L, neutral speed N and high speed level H. The vehicle has a drive system according to the invention with a control system and an electronic stabilization system ESP on which for correction according to the invention the vehicle speed is used. The tax system points vzw. an electronic control unit.
In
Zunächst wird die Erfindung ausgehend
von einem rollenden Fahrzeug mit einer niedrigen Anfangsgeschwindigkeit
v0 im Kurvenabschnitt
Bei einer Gefällefahrt wird aufgrund der
Korrektur der Fahrzeuggeschwindigkeit vermieden, daß während des
Schaltvorgangs wegen der dann fehlenden Motorbremswirkung die Fahrzeuggeschwindigkeit
entsprechend dem hypothetischen Kurvenabschnitt
Nun wird die Erfindung ausgehend
von einem rollenden Fahrzeug mit der maximal zulässigen Fahrzeuggeschwindigkeit
v = vmax in der Langsamfahrstufe L im Kurvenabschnitt
Dem Fachmann ist nun ersichtlich, daß die erfindungsgemäße Korrektur nicht notwendigerweise die Fahrzeuggeschwindigkeit im wesentlichen konstant halten muß, sondern alternativ z.B. eine Begrenzung der Fahrzeuggeschwindigkeit auf die maximal zulässige Fahrzeuggeschwindigkeit vmax in der Langsamfahrstufe L bewirken könnte.It is now apparent to the person skilled in the art that the correction according to the invention does not necessarily have to keep the vehicle speed essentially constant, but instead could alternatively, for example, limit the vehicle speed to the maximum permissible vehicle speed v max in the slow speed stage L.
In
Die Erfindung wird ausgehend von
einem rollenden Fahrzeug mit einer Anfangsgeschwindigkeit v = v1 im Kurvenabschnitt
Zu beachten ist, daß die Erfindung für jede Fahrtrichtung des Fahrzeugs gilt, also beispielsweise ein eine Steigung in Rückwärtsfahrtrichtung hinauf rollendes Fahrzeug zum Stillstand kommt und dann im Stillstand gehalten wird, so daß auch hier ein Geschwindigkeitsrichtungswechsel verhindert wird.It should be noted that the invention for every direction of the vehicle applies, for example an incline in the reverse direction rolling vehicle comes to a standstill and then at a standstill is held so that too a change in speed direction is prevented here.
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- Zeitpunkttime
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- Kurvenabschnittcurve section
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- Druckabbaupressure reduction
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10246298A DE10246298B4 (en) | 2002-10-02 | 2002-10-02 | Method for controlling a drive system and drive system |
PCT/EP2003/010744 WO2004033244A1 (en) | 2002-10-02 | 2003-09-26 | Method for controlling a drive system and drive system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10246298A DE10246298B4 (en) | 2002-10-02 | 2002-10-02 | Method for controlling a drive system and drive system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10246298A1 true DE10246298A1 (en) | 2004-04-15 |
DE10246298B4 DE10246298B4 (en) | 2011-09-15 |
Family
ID=32010204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10246298A Expired - Lifetime DE10246298B4 (en) | 2002-10-02 | 2002-10-02 | Method for controlling a drive system and drive system |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10246298B4 (en) |
WO (1) | WO2004033244A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004109161A1 (en) * | 2003-06-05 | 2004-12-16 | Daimlerchrysler Ag | Method for operating the drive train of a motor vehicle |
WO2007134945A1 (en) * | 2006-05-19 | 2007-11-29 | Zf Friedrichshafen Ag | Method and device for avoiding undesired accelerations of a land craft |
WO2015010964A1 (en) * | 2013-07-25 | 2015-01-29 | Jaguar Land Rover Limited | Vehicle speed control system and method |
EP1725440B1 (en) | 2004-03-09 | 2016-12-21 | Volvo Lastvagnar Ab | Method and arrangement for distributing brake torque on a vehicle |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE530039C2 (en) | 2006-05-26 | 2008-02-12 | Scania Cv Abp | System and method for controlling braking of a downhill motor vehicle |
GB2516498B (en) | 2013-07-25 | 2017-06-14 | Jaguar Land Rover Ltd | Vehicle control system and method |
DE112019001944T5 (en) | 2018-04-13 | 2021-04-01 | Dana Heavy Vehicle Systems Group, Llc | CONTROL STRATEGIES FOR SINGLE AND MULTIMODAL ELECTRIC SECONDARY OR TRAILING ELECTRIC AXES |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2319636A (en) * | 1996-11-23 | 1998-05-27 | Wabco Gmbh | Method of speed control for a vehicle on a gradient |
DE19827882A1 (en) * | 1998-06-23 | 1999-12-30 | Bosch Gmbh Robert | Procedure for stabilising vehicle, especially for avoiding its tipping over about longitudinal axis and/or its skidding in transverse direction |
US6283240B1 (en) * | 1998-09-02 | 2001-09-04 | Rover Group Limited | Vehicle |
Family Cites Families (11)
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DE3218830A1 (en) | 1982-05-19 | 1983-11-24 | Volkswagenwerk Ag, 3180 Wolfsburg | Transmission arrangement |
DE3827248A1 (en) * | 1987-08-14 | 1989-02-23 | Zahnradfabrik Friedrichshafen | Device for monitoring the switching state of a drive unit of a motor vehicle |
US5137127A (en) * | 1991-04-03 | 1992-08-11 | Eaton Corporation | Motor vehicle hill holder system |
EP0784001B1 (en) * | 1996-01-12 | 2002-07-31 | Eaton Corporation | Shift control system/method for vehicle equipped with driveline retarder |
DE19704841A1 (en) * | 1997-02-08 | 1998-08-13 | Itt Mfg Enterprises Inc | Method and device for regulating the longitudinal dynamics of a vehicle |
JPH10264788A (en) * | 1997-03-25 | 1998-10-06 | Iseki & Co Ltd | Speed change control device for working vehicle |
GB9814258D0 (en) * | 1998-07-02 | 1998-09-02 | Rover Group | Vehicle brake control |
DE19835937A1 (en) * | 1998-08-08 | 2000-02-10 | Wabco Gmbh | Procedure for controlling the rate of descent of an off-road vehicle |
DE19848209A1 (en) * | 1998-10-20 | 2000-04-27 | Volkswagen Ag | Method and device for holding a motor vehicle under a force acting thereon |
GB2345523A (en) * | 1999-01-08 | 2000-07-12 | Rover Group | Movement control arrangement for a motor vehicle |
KR20040010624A (en) * | 2001-04-20 | 2004-01-31 | 룩라멜렌운트쿠플룽스바우베타일리궁스카게 | Method for applying braking torque in overrun conditions in a vehicle comprising an automatic clutch and/or an automatic gear box |
-
2002
- 2002-10-02 DE DE10246298A patent/DE10246298B4/en not_active Expired - Lifetime
-
2003
- 2003-09-26 WO PCT/EP2003/010744 patent/WO2004033244A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2319636A (en) * | 1996-11-23 | 1998-05-27 | Wabco Gmbh | Method of speed control for a vehicle on a gradient |
DE19827882A1 (en) * | 1998-06-23 | 1999-12-30 | Bosch Gmbh Robert | Procedure for stabilising vehicle, especially for avoiding its tipping over about longitudinal axis and/or its skidding in transverse direction |
US6283240B1 (en) * | 1998-09-02 | 2001-09-04 | Rover Group Limited | Vehicle |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004109161A1 (en) * | 2003-06-05 | 2004-12-16 | Daimlerchrysler Ag | Method for operating the drive train of a motor vehicle |
US7442148B2 (en) | 2003-06-05 | 2008-10-28 | Daimler Ag | Method for operating the drive train of a motor vehicle |
EP1725440B1 (en) | 2004-03-09 | 2016-12-21 | Volvo Lastvagnar Ab | Method and arrangement for distributing brake torque on a vehicle |
WO2007134945A1 (en) * | 2006-05-19 | 2007-11-29 | Zf Friedrichshafen Ag | Method and device for avoiding undesired accelerations of a land craft |
WO2015010964A1 (en) * | 2013-07-25 | 2015-01-29 | Jaguar Land Rover Limited | Vehicle speed control system and method |
Also Published As
Publication number | Publication date |
---|---|
WO2004033244A1 (en) | 2004-04-22 |
DE10246298B4 (en) | 2011-09-15 |
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8120 | Willingness to grant licences paragraph 23 | ||
R018 | Grant decision by examination section/examining division | ||
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Effective date: 20111216 |
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R071 | Expiry of right |