WO2005007443A1 - Manually actuatable cruise control unit for a motor vehicle - Google Patents

Manually actuatable cruise control unit for a motor vehicle Download PDF

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Publication number
WO2005007443A1
WO2005007443A1 PCT/EP2004/007500 EP2004007500W WO2005007443A1 WO 2005007443 A1 WO2005007443 A1 WO 2005007443A1 EP 2004007500 W EP2004007500 W EP 2004007500W WO 2005007443 A1 WO2005007443 A1 WO 2005007443A1
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WO
WIPO (PCT)
Prior art keywords
control unit
speed
cruise control
speed change
actuator
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Application number
PCT/EP2004/007500
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German (de)
French (fr)
Inventor
Kai Visel
Original Assignee
Daimlerchrysler Ag
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Application filed by Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2005007443A1 publication Critical patent/WO2005007443A1/en

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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
    • B60K31/042—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 where at least one electrical quantity is set by the vehicle operator

Definitions

  • the invention relates to a manually operated cruise control unit for a motor vehicle according to the preamble of claim 1.
  • the vehicle speed can be set automatically to a target speed that can be set by the driver.
  • the driver has the option of increasing or decreasing the target vehicle speed by an incremental amount based on the current actual speed via an actuator arranged on the steering wheel.
  • This value of the target vehicle speed is fed to a regulating and control unit which regulates engine components, in particular the fuel supply and the air supply, in such a way that the desired target speed is automatically maintained.
  • the actuator via the actuation of which the target vehicle speed can be changed incrementally, is usually designed as an adjusting lever which can be pivoted in two opposite directions, each pivoting direction corresponding to a direction of speed change for accelerating or decelerating the vehicle. If the control lever is kept deflected by the driver in one of the two speed change directions, where a correspondingly larger one becomes dependent on the duration of the actuation of the control lever Speed change compared to the current vehicle speed carried out.
  • the invention is based on the problem of improving the comfort and handling of a cruise control unit for a motor vehicle.
  • the actuator of the cruise control unit according to the invention can be adjusted in at least two different speed change positions, to which differently high speed change rates are assigned. This opens up the possibility, depending on the desired speed change rate, of adjusting the actuator into the respectively assigned speed change position, as a result of which the vehicle target speed can be set with the desired change measure. The ease of use is thereby considerably improved, since the driver can select the actuator position in which a higher rate of change in speed can be set, in the event that a greater acceleration or deceleration to the desired setpoint value of the speed is desired, whereas for a gentler acceleration or delay the adjustment of the actuator in the speed change position with a lower rate of change is sufficient.
  • both an acceleration and a deceleration of the vehicle speed via the actuator it is expedient to set both an acceleration and a deceleration of the vehicle speed via the actuator. In principle, however, it is sufficient to allow only one direction of adjustment, in particular acceleration. Both the direction of acceleration and the deceleration direction can be assigned at least two speed change positions of the actuator with different speed change rates.
  • the transition between the different acceleration or deceleration stages can take place discontinuously as well as continuously.
  • the speed change positions are delimited from one another and each speed change position has exactly one speed change rate, so that successive speed change positions have stair-shaped speed change rates.
  • Two adjacent speed change positions can be separated via a pressure point, which is to be overcome when the actuating lever is transferred from one to the next speed change position. If the pressure point is exceeded, the driver is shown that the current speed change position of the control lever is exited.
  • the speed change positions continuously and to set a speed change rate that is also continuously changing.
  • this is achieved in that the position of the actuator can be changed continuously in one direction and each current position of the actuator is assigned exactly one rate of change in speed.
  • incremental speed change positions of the control lever which are separated, for example, by a pressure point, a continuously changing rate of speed change being possible within a speed change position, for example by adjusting the control lever in a second direction of movement which is independent of the first direction of movement, or in that the actuator comprises a plurality of actuating units to be actuated independently of one another, each of which can be set separately.
  • Continuous regulation of the rate of change in speed is advantageously generated via a continuously increasing resistance in the actuator, the rate of rate of change increasing with the resistance in the actuator.
  • the cruise control unit For optimal regulation of the deceleration of the vehicle, it may be advantageous to couple the cruise control unit to the control of the vehicle brake by generating an actuating signal in the event of a manually set vehicle deceleration, which is fed to a regulating and control unit via which the vehicle brake is to be set.
  • the automatic adjustment of the vehicle brake is carried out in particular in addition to engine measures to reduce the vehicle speed, with the speed preferably initially being set via a reduced air and fuel supply and the vehicle brake being actuated only in the event that the influencing via the air and fuel supply for one Desired rate of change in speed is not sufficient.
  • 1 is a schematic representation of a cruise control unit for a motor vehicle
  • the cruise control unit 1 shown in FIG. 1 is assigned an actuator designed as an actuating lever 2, which is located on the steering wheel 3 of a motor vehicle and is pivotably attached to the longitudinal column. Steering movements which are applied via the steering wheel 3 are transmitted to the steerable vehicle wheels via a steering linkage 4.
  • the cruise control unit can be activated and the desired target speed S oi ⁇ can be specified in the cruise control unit.
  • control lever 2 of the cruise control unit - as shown in the direction of the arrow "+" or “-" - is pivoted from a central position or neutral position, whereby the cruise control unit is activated on the one hand and a speed increment ⁇ v is generated on the other hand, so that the desired vehicle speed v S oi ⁇ differs from the current vehicle speed Vi st .
  • the speed increment ⁇ v is fed to a regulating and control unit 5 of the motor vehicle, in which the speed increment ⁇ v is added to the current vehicle speed Vi st in order to obtain the desired vehicle speed v so ⁇ :
  • Vgoll i st + ⁇ v
  • the target vehicle speed v so ⁇ serves as a setpoint or control signal and is used as a basis for setting the fuel injection and the air supply to the internal combustion engine.
  • further control signals S s t can also be generated in the regulating and control unit 5 in order to set or activate other units of the internal combustion engine or the motor vehicle, in particular the vehicle brake for rapidly reducing the vehicle speed, a variable turbine geometry or the like.
  • the lever 2 is shown in different positions. The center position or neutral position of the actuating lever, which is identified by “0”, and two deflected positions to the right and left, which are identified by “+”, “++” and “-” and “-”, are shown.
  • the two deflected positions of the actuating lever marked with “+” correspond to a speed change position, each with a speed change rate to increase the current vehicle speed Vi St.
  • the two positions of the control lever 2 marked with “-” also correspond to a speed change position with different speed change rates to reduce the current vehicle speed.
  • a position with a single “+” or “-” sign corresponds to a lower speed change rate than a position with a double "++ "or" - "sign.
  • the adjusting lever 2 is expediently acted upon by a force element in its middle neutral position. Each time the control lever 2 is deflected from its neutral position, it is subjected to a restoring force via the force element acting on it, the restoring force increasing with the extent of the deflection, so that a deflection in the “++” position or “-” position unites requires more effort than a deflection in the "+" position or "-” position. The driver can feel the position of the control lever 2 via the amount of the restoring force.

Abstract

The invention relates to a manually actuatable cruise control unit for a motor vehicle, comprising an actuator (2) that can be displaced from a neutral position into at least two different speed changing positions in order to vary the nominal speed. Different high speed change rates are associated with the speed change positions. The nominal speed is varied in the first position by a first speed increment.

Description

Manuell zu betätigende Tempomateinheit für ein Kraftfahrzeug Manually operated cruise control unit for a motor vehicle
Die Erfindung bezieht sich auf eine manuell zu betätigende Tempomateinheit für ein Kraftfahrzeug nach dem Oberbegriff des Anspruches 1.The invention relates to a manually operated cruise control unit for a motor vehicle according to the preamble of claim 1.
Mittels einer derartigen Tempomateinheit, die beispielsweise in der Druckschrift DE 195 09 494 C2 beschrieben wird, ist die Fahrzeuggeschwindigkeit auf eine vom Fahrer einstellbare Sollgeschwindigkeit selbsttätig einzustellen. Der Fahrer hat hierbei die Möglichkeit, über ein am Lenkrad angeordnetes Stellglied die Fahrzeugsollgeschwindigkeit ausgehend von der aktuellen Istgeschwindigkeit um einen inkrementellen Betrag zu erhöhen oder abzusenken. Dieser Wert der Fahrzeugsollgeschwindigkeit wird einer Regel- und Steuereinheit zugeführt, die motorische Baukomponenten, insbesondere die Kraftstoffzufuhr und die Luftzufuhr in der Weise regelt, dass die gewünschte Sollgeschwindigkeit selbsttätig eingehalten wird. Das Stellglied, über dessen Betätigung die Fahrzeugsollgeschwindigkeit inkrementell änderbar ist, ist üblicherweise als ein in zwei entgegengesetzte Richtungen verschwenkbarer Stellhebel ausgebildet, wobei jede Schwenkrichtung einer Ge- schwindigkeitsänderungsrichtung zum Beschleunigen bzw. Verzögern des Fahrzeuges entspricht. Wird der Stellhebel vom Fahrer in einer der beiden Geschwindigkeitsänderungsrichtungen ausgelenkt gehalten, wo wird in Abhängigkeit von der Zeitdauer der Betätigung des Stellhebels eine entsprechend größere Geschwindigkeitsänderung gegenüber der aktuellen Fahrzeuggeschwindigkeit durchgeführt .By means of such a cruise control unit, which is described, for example, in document DE 195 09 494 C2, the vehicle speed can be set automatically to a target speed that can be set by the driver. The driver has the option of increasing or decreasing the target vehicle speed by an incremental amount based on the current actual speed via an actuator arranged on the steering wheel. This value of the target vehicle speed is fed to a regulating and control unit which regulates engine components, in particular the fuel supply and the air supply, in such a way that the desired target speed is automatically maintained. The actuator, via the actuation of which the target vehicle speed can be changed incrementally, is usually designed as an adjusting lever which can be pivoted in two opposite directions, each pivoting direction corresponding to a direction of speed change for accelerating or decelerating the vehicle. If the control lever is kept deflected by the driver in one of the two speed change directions, where a correspondingly larger one becomes dependent on the duration of the actuation of the control lever Speed change compared to the current vehicle speed carried out.
Von diesem Stand der Technik ausgehend, liegt der Erfindung das Problem zugrunde, den Komfort und die Handhabung einer Tempomateinheit für ein Kraftfahrzeug zu verbessern.Starting from this prior art, the invention is based on the problem of improving the comfort and handling of a cruise control unit for a motor vehicle.
Dieses Problem wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This problem is solved according to the invention with the features of claim 1. The subclaims indicate appropriate further training.
Das Stellglied der erfindungsgemäßen Tempomateinheit ist in zumindest zwei unterschiedliche Geschwindigkeitsänderungspo- sitionen zu verstellen, denen unterschiedlich hohe Geschwindigkeitsänderungsraten zugeordnet sind. Dies eröffnet die Möglichkeit, je nach gewünschter Geschwindigkeitsänderungsra- te das Stellglied in die jeweils zugeordnete Geschwindig- keitsänderungsposition zu verstellen, wodurch die Fahrzeugsollgeschwindigkeit mit dem jeweils gewünschten Änderungsmaß einstellbar ist. Der Bedienkomfort wird hierdurch erheblich verbessert, da der Fahrer für den Fall, dass eine größere Beschleunigung bzw. Verzögerung auf den gewünschten Sollwert der Geschwindigkeit gewünscht ist, diejenige Stellgliedposition wählen kann, in der eine höhere Geschwindigkeitsände- rungsrate einstellbar ist, wohingegen für ein sanfteres Beschleunigen bzw. Verzögern die Verstellung des Stellgliedes in die Geschwindigkeitsänderungsposition mit geringerer Änderungsrate ausreicht .The actuator of the cruise control unit according to the invention can be adjusted in at least two different speed change positions, to which differently high speed change rates are assigned. This opens up the possibility, depending on the desired speed change rate, of adjusting the actuator into the respectively assigned speed change position, as a result of which the vehicle target speed can be set with the desired change measure. The ease of use is thereby considerably improved, since the driver can select the actuator position in which a higher rate of change in speed can be set, in the event that a greater acceleration or deceleration to the desired setpoint value of the speed is desired, whereas for a gentler acceleration or delay the adjustment of the actuator in the speed change position with a lower rate of change is sufficient.
Zweckmäßig ist über das Stellglied sowohl eine Beschleunigung als auch eine Verzögerung der Fahrzeuggeschwindigkeit einzustellen. Grundsätzlich ist es aber ausreichend, nur eine Stellrichtung zuzulassen, insbesondere eine Beschleunigung. Sowohl der Beschleunigungsrichtung als auch der Verzögerungs- richtung können jeweils zumindest zwei Geschwindigkeitsände- rungspositionen des Stellglieds mit unterschiedlichen Geschwindigkeitsänderungsraten zugeordnet sein.It is expedient to set both an acceleration and a deceleration of the vehicle speed via the actuator. In principle, however, it is sufficient to allow only one direction of adjustment, in particular acceleration. Both the direction of acceleration and the deceleration direction can be assigned at least two speed change positions of the actuator with different speed change rates.
Der Übergang zwischen den unterschiedlichen Beschleunigungs- oder Verzögerungsstufen kann sowohl diskontinuierlich als auch kontinuierlich erfolgen. Im Falle eines diskontinuierlichen Überganges sind die Geschwindigkeitsänderungspositionen voneinander abgegrenzt und weist jede Geschwindigkeitsände- rungsposition genau eine Geschwindigkeitsänderungsrate auf, so dass aufeinander folgende Geschwindigkeitsänderungspositi- onen treppenfδrmige Geschwindigkeitsänderungsraten besitzen. Zwei benachbarte Geschwindigkeitsänderungspositionen können über einen Druckpunkt separiert sein, welcher bei der Überführung des Stellhebels von einer in die nächste Geschwindig- keitsänderungsposition zu überwinden ist. Bei Überschreiten des Druckpunktes wird dem Fahrer angezeigt, dass die aktuelle Geschwindigkeitsänderungsposition des Stellhebels verlassen wird.The transition between the different acceleration or deceleration stages can take place discontinuously as well as continuously. In the case of a discontinuous transition, the speed change positions are delimited from one another and each speed change position has exactly one speed change rate, so that successive speed change positions have stair-shaped speed change rates. Two adjacent speed change positions can be separated via a pressure point, which is to be overcome when the actuating lever is transferred from one to the next speed change position. If the pressure point is exceeded, the driver is shown that the current speed change position of the control lever is exited.
Alternativ oder kumulativ ist es auch möglich, die Geschwin- digkeitsänderungspositionen kontinuierlich zu verändern und hierbei eine ebenfalls kontinuierlich sich ändernde Geschwindigkeitsänderungsrate einzustellen. In einfachster Ausführung wird dies dadurch erreicht, dass die Position des Stellgliedes kontinuierlich in eine Richtung verändert werden kann und jeder aktuellen Position des Stellgliedes genau eine Geschwindigkeitsänderungsrate zugeordnet ist. Es ist aber auch möglich, inkrementelle Geschwindigkeitsänderungspositionen des Stellhebels zuzulassen, die beispielsweise über einen Druckpunkt separiert sind, wobei innerhalb einer Geschwindig- keitsänderungsposition eine kontinuierlich sich ändernde Geschwindigkeitsänderungsrate möglich ist, indem beispielsweise der Stellhebel in eine zweite Bewegungsrichtung verstellt wird, welche von der ersten Bewegungsrichtung unabhängig ist, oder indem das Stellglied mehrere, voneinander unabhängig zu betätigende Stelleinheiten umfasst, die jeweils separat einstellbar sind. Eine stufenlose Regelung der Geschwindigkeits- änderungsrate wird vorteilhaft über einen kontinuierlich ansteigenden Widerstand im Stellglied erzeugt, wobei die Geschwindigkeitsänderungsrate mit dem Widerstand im Stellglied ansteigt .Alternatively or cumulatively, it is also possible to change the speed change positions continuously and to set a speed change rate that is also continuously changing. In the simplest version, this is achieved in that the position of the actuator can be changed continuously in one direction and each current position of the actuator is assigned exactly one rate of change in speed. However, it is also possible to allow incremental speed change positions of the control lever, which are separated, for example, by a pressure point, a continuously changing rate of speed change being possible within a speed change position, for example by adjusting the control lever in a second direction of movement which is independent of the first direction of movement, or in that the actuator comprises a plurality of actuating units to be actuated independently of one another, each of which can be set separately. Continuous regulation of the rate of change in speed is advantageously generated via a continuously increasing resistance in the actuator, the rate of rate of change increasing with the resistance in the actuator.
Für eine optimale Regelung der Verzögerung des Fahrzeuges kann es vorteilhaft sein, die Tempomateinheit mit der Ansteu- erung der Fahrzeugbremse zu koppeln, indem im Falle einer manuell einzustellenden Fahrzeugverzögerung ein Stellsignal generiert wird, welches einer Regel- und Steuereinheit zugeführt wird, über die die Fahrzeugbremse einzustellen ist. Die selbsttätige Einstellung der Fahrzeugbremse erfolgt insbesondere zusätzlich zu motorischen Maßnahmen zur Reduzierung der Fahrzeuggeschwindigkeit, wobei bevorzugt die Geschwindigkeit zunächst über eine reduzierte Luft- und Kraftstoffzufuhr eingestellt und die Fahrzeugbremse erst für den Fall betätigt wird, dass die Beeinflussung über die Luft- und Kraftstoffzufuhr für eine gewünschte Geschwindigkeitsänderungsrate nicht ausreicht .For optimal regulation of the deceleration of the vehicle, it may be advantageous to couple the cruise control unit to the control of the vehicle brake by generating an actuating signal in the event of a manually set vehicle deceleration, which is fed to a regulating and control unit via which the vehicle brake is to be set. The automatic adjustment of the vehicle brake is carried out in particular in addition to engine measures to reduce the vehicle speed, with the speed preferably initially being set via a reduced air and fuel supply and the vehicle brake being actuated only in the event that the influencing via the air and fuel supply for one Desired rate of change in speed is not sufficient.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:Further advantages and expedient designs can be found in the further claims, the description of the figures and the drawings. Show it:
Fig. 1 eine schematische Darstellung einer Tempomateinheit für ein Kraftfahrzeug,1 is a schematic representation of a cruise control unit for a motor vehicle,
Fig. 2 ein als Stellhebel ausgeführtes Stellglied der Tempomateinheit in unterschiedlichen Geschwindigkeits- änderungspositionen. Der in Fig. 1 dargestellten Tempomateinheit 1 ist ein als Stellhebel 2 ausgebildetes Stellglied zugeordnet, welches sich am Lenkrad 3 eines Kraftfahrzeuges befindet und an der Längssäule schwenkbar befestigt ist. Lenkbewegungen, welche über das Lenkrad 3 aufgebracht werden, werden über ein Lenkgestänge 4 auf die lenkbaren Fahrzeugräder übertragen. Zur selbsttägigen Einhaltung einer gewünschten Fahrzeugsollgeschwindigkeit vSoiι ohne Betätigung eines Fahr- bzw. Beschleu- nigungspedales im Kraftfahrzeug kann die Tempomateinheit aktiviert und in der Tempomateinheit die gewünschte Sollgeschwindigkeit Soiι vorgegeben werden. Hierfür wird der Stell- hebel 2 der Tempomateinheit - wie in Pfeilrichtung „+" oder „-" dargestellt - aus einer Mittellage bzw. Neutralposition verschwenkt, wodurch die Tempomateinheit einerseits aktiviert und andererseits ein Geschwindkeitsinkrement Δv generiert wird, um das sich die einzustellende Fahrzeugsollgeschwindigkeit vSoiι gegenüber der aktuellen Fahrzeuggeschwindigkeit Vist unterscheidet. Das Geschwindigkeitsinkrement Δv wird einer Regel- und Steuereinheit 5 des Kraftfahrzeuges zugeführt, in der das Geschwindigkeitsinkrement Δv zu der aktuellen Fahrzeuggeschwindigkeit Vist addiert wird, um die einzustellende Fahrzeugsollgeschwindigkeit vsoιι zu erhalten:2 an actuator of the cruise control unit designed as an actuating lever in different speed change positions. The cruise control unit 1 shown in FIG. 1 is assigned an actuator designed as an actuating lever 2, which is located on the steering wheel 3 of a motor vehicle and is pivotably attached to the longitudinal column. Steering movements which are applied via the steering wheel 3 are transmitted to the steerable vehicle wheels via a steering linkage 4. To automatically maintain a desired vehicle target speed v S oiι without actuating a driving or accelerating pedal in the motor vehicle, the cruise control unit can be activated and the desired target speed S oiι can be specified in the cruise control unit. For this purpose, the control lever 2 of the cruise control unit - as shown in the direction of the arrow "+" or "-" - is pivoted from a central position or neutral position, whereby the cruise control unit is activated on the one hand and a speed increment Δv is generated on the other hand, so that the desired vehicle speed v S oiι differs from the current vehicle speed Vi st . The speed increment Δv is fed to a regulating and control unit 5 of the motor vehicle, in which the speed increment Δv is added to the current vehicle speed Vi st in order to obtain the desired vehicle speed v so ιι:
Vgoll = ist + ΔvVgoll = i st + Δv
Die Fahrzeugsollgeschwindigkeit vsoιι dient als Soll- bzw. Stellsignal und wird der Einstellung der Kraftstoffeinspritzung sowie der Luftzufuhr zur Brennkraftmaschine zugrunde gelegt. Darüber hinaus können in der Regel- und Steuereinheit 5 auch weitere Stellsignale Sst generiert werden, um sonstige Aggregate der Brennkraftmaschine bzw. des Kraftfahrzeugs einzustellen oder zu aktivieren, insbesondere die Fahrzeugbremse zur schnellen Reduzierung der Fahrzeuggeschwindigkeit, eine variable Turbinengeometrie oder ähnliches. In Fig. 2 ist der Stellhebel 2 in verschiedenen Positionen dargestellt. Eingezeichnet sind die Mittellage bzw. Neutralposition des Stellhebels, welche mit „0" gekennzeichnet ist, sowie jeweils zwei ausgelenkte Positionen nach rechts und links, die mit „+", „++" und „-" sowie „--" bezeichnet sind. Die beiden mit „+" gekennzeichneten, ausgelenkten Positionen des Stellhebels entsprechen einer Geschwindigkeitsänderungs- position mit jeweils einer Geschwindigkeitsänderungsrate zur Erhöhung der aktuellen Fahrzeuggeschwindigkeit ViSt. Die beiden mit „-" gekennzeichneten Positionen des Stellhebels 2 entsprechen ebenfalls einer Geschwindigkeitsänderungsposition mit unterschiedlichen Geschwindigkeitsänderungsraten zur Verringerung der aktuellen Fahrzeuggeschwindigkeit. Eine Position mit einem einzelnen „+" oder „-„ Zeichen entspricht einer niedrigeren Geschwindigkeitsänderungsrate als eine Position mit einem doppelten „++" oder „--" Zeichen.The target vehicle speed v so ιι serves as a setpoint or control signal and is used as a basis for setting the fuel injection and the air supply to the internal combustion engine. In addition, further control signals S s t can also be generated in the regulating and control unit 5 in order to set or activate other units of the internal combustion engine or the motor vehicle, in particular the vehicle brake for rapidly reducing the vehicle speed, a variable turbine geometry or the like. In Fig. 2, the lever 2 is shown in different positions. The center position or neutral position of the actuating lever, which is identified by “0”, and two deflected positions to the right and left, which are identified by “+”, “++” and “-” and “-”, are shown. The two deflected positions of the actuating lever marked with “+” correspond to a speed change position, each with a speed change rate to increase the current vehicle speed Vi St. The two positions of the control lever 2 marked with "-" also correspond to a speed change position with different speed change rates to reduce the current vehicle speed. A position with a single "+" or "-" sign corresponds to a lower speed change rate than a position with a double "++ "or" - "sign.
Zweckmäßig ist der Stellhebel 2 über ein Kraftelement in seine mittlere Neutralposition kraftbeaufschlagt. Bei jeder Auslenkung des Stellhebels 2 aus seiner Neutralposition wird dieser über das auf ihn wirkende Kraftelement mit einer Rückstellkraft beaufschlagt, wobei die Rückstellkraft mit dem Maß der Auslenkung zunimmt, so dass eine Auslenkung in „++" Position bzw. „--" Position einen höheren Kraftaufwand erfordert als eine Auslenkung in „+" Position bzw. „-" Position. Über die Höhe der Rückstellkraft spürt der Fahrer, in welcher Position sich der Stellhebel 2 befindet.The adjusting lever 2 is expediently acted upon by a force element in its middle neutral position. Each time the control lever 2 is deflected from its neutral position, it is subjected to a restoring force via the force element acting on it, the restoring force increasing with the extent of the deflection, so that a deflection in the “++” position or “-” position unites requires more effort than a deflection in the "+" position or "-" position. The driver can feel the position of the control lever 2 via the amount of the restoring force.
Im Ausführungsbeispiel sind jeweils zwei Geschwindigkeitsän- derungsposition für Beschleunigen und Verzögern dargestellt. Es kann aber auch zweckmäßig sein, mehr als zwei Geschwindigkeitsänderungspositionen für jede Änderungsrichtung vorzusehen. Außerdem kann es vorteilhaft sein, eine kontinuierliche Verstellung des Stellhebels in eine oder in beide Richtung/en zuzulassen und auf diese Weise auch die Geschwindigkeitsänderungsrate kontinuierlich zu ändern. In der letztgenannten Ausführung sind prinzipiell beliebig viele Änderungspositionen des Stellhebels einstellbar. In the exemplary embodiment, two speed change positions for acceleration and deceleration are shown. However, it can also be expedient to provide more than two speed change positions for each change direction. It may also be beneficial to have a continuous Allow adjustment of the control lever in one or both directions and in this way to change the rate of change of speed continuously. In the last-mentioned embodiment, any number of change positions of the actuating lever can in principle be set.

Claims

DaimlerChrysler AGPatentansprüche DaimlerChrysler AG patent claims
1. Manuell zu betätigende Tempomateinheit für ein Kraftfahrzeug, über die die Fahrzeuggeschwindigkeit vom Fahrer auf eine selbsttätig einzuhaltende Sollgeschwindigkeit einstellbar ist, wobei die Tempomateinheit (1) ein Stellglied umfasst, das zur Variierung der Sollgeschwindigkeit aus einer Neutral- Stellung in eine Geschwindigkeitsänderungsposition zu verstellen ist, d a d u r c h g e k e n n z e i c h n e t , dass das Stellglied in zumindest zwei verschiedene Geschwin- digkeitsänderungspositionen verstellbar ist, denen unterschiedlich hohe Geschwindigkeitsänderungsraten zugeordnet sind.1. Manually operated cruise control unit for a motor vehicle, by means of which the vehicle speed can be set by the driver to a target speed to be maintained automatically, the cruise control unit (1) comprising an actuator which can be adjusted from a neutral position to a speed change position in order to vary the target speed , characterized in that the actuator is adjustable in at least two different speed change positions, which are assigned different rates of change in speed.
2. Tempomateinheit nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Übergang zwischen verschiedenen Geschwindigkeitsän- •derungspositionen diskontinuierlich erfolgt.2. Cruise control unit according to claim 1, characterized in that the transition between different speed change • positions takes place discontinuously.
3. Tempomateinheit nach Anspruch 2 , d a d u r c h g e k e n n z e i c h n e t , dass zur Überführung des Stellglieds von der ersten Geschwin- digkeitsänderungsposition in die zweite Geschwindigkeitsände- rungsposition ein Druckpunkt zu überwinden ist. 3. Cruise control unit according to claim 2, characterized in that a pressure point is to be overcome to transfer the actuator from the first speed change position to the second speed change position.
4. Tempomateinheit nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , dass der Übergang zwischen verschiedenen Geschwindigkeitsän- derungspositionen kontinuierlich erfolgt.4. Cruise control unit according to one of claims 1 to 3, d a d u r c h g e k e n n z e i c h n e t that the transition between different speed change positions is continuous.
5. Tempomateinheit nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass das Stellglied in die Neutralstellung kraftbeaufschlagt ist .5. cruise control unit according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t that the actuator is applied to the neutral position.
6. Tempomateinheit nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , dass zum Beschleunigen und zum Verzögern des Kraftfahrzeugs das Stellglied in jeweils mindestens zwei verschiedene Ge- schwindigkeitsänderungspositionen verstellbar ist.6. Cruise control unit according to one of claims 1 to 5, so that the actuator can be adjusted in at least two different speed change positions in order to accelerate and decelerate the motor vehicle.
7. Tempomateinheit nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , dass zum Verzögern des Fahrzeugs bei einer Betätigung des Stellglieds in die Geschwindigkeitsänderungsposition ein Stellsignal erzeugbar ist, über das die Fahrzeugbremse betätigt ist. 7. Cruise control unit according to one of claims 1 to 6, d a d u r c h g e k e n n z e i c h n e t that an actuating signal can be generated to decelerate the vehicle upon actuation of the actuator in the speed change position, via which the vehicle brake is actuated.
PCT/EP2004/007500 2003-07-16 2004-07-08 Manually actuatable cruise control unit for a motor vehicle WO2005007443A1 (en)

Applications Claiming Priority (2)

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DE10332204.3 2003-07-16
DE2003132204 DE10332204A1 (en) 2003-07-16 2003-07-16 Manually operated cruise control unit for a motor vehicle

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Cited By (2)

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EP2319723A1 (en) * 2008-08-28 2011-05-11 Nissan Motor Co., Ltd. Vehicle speed limit control device and method for controlling vehicle speed limit
WO2012056264A1 (en) * 2010-10-29 2012-05-03 Renault Trucks Control device of an automotive vehicle and method for controlling the speed of an automotive vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160205863A1 (en) * 2013-09-13 2016-07-21 Agco Corporation Windrower tractor controlled by forward-neutral-reverse ground speed lever
DE102017001847A1 (en) 2017-02-25 2018-08-30 Man Truck & Bus Ag Method and device for controlling a braking device of a motor vehicle

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DE4338098A1 (en) * 1993-11-08 1995-05-11 Daimler Benz Ag Cruise control for motor vehicles
DE19537273A1 (en) * 1995-10-06 1997-04-10 Zahnradfabrik Friedrichshafen Vehicle speed control device
US6282482B1 (en) * 1997-02-11 2001-08-28 Scania Cv Aktiebolag Device for controlling speed and acceleration of a vehicle
DE10043096A1 (en) * 2000-09-01 2002-03-14 Volkswagen Ag Arrangement for motor vehicle speed and distance regulation has control elements for speed and distance regulation formed by rotary and sliding elements respectively

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338098A1 (en) * 1993-11-08 1995-05-11 Daimler Benz Ag Cruise control for motor vehicles
DE19537273A1 (en) * 1995-10-06 1997-04-10 Zahnradfabrik Friedrichshafen Vehicle speed control device
US6282482B1 (en) * 1997-02-11 2001-08-28 Scania Cv Aktiebolag Device for controlling speed and acceleration of a vehicle
DE10043096A1 (en) * 2000-09-01 2002-03-14 Volkswagen Ag Arrangement for motor vehicle speed and distance regulation has control elements for speed and distance regulation formed by rotary and sliding elements respectively

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2319723A1 (en) * 2008-08-28 2011-05-11 Nissan Motor Co., Ltd. Vehicle speed limit control device and method for controlling vehicle speed limit
EP2319723A4 (en) * 2008-08-28 2014-04-09 Nissan Motor Vehicle speed limit control device and method for controlling vehicle speed limit
WO2012056264A1 (en) * 2010-10-29 2012-05-03 Renault Trucks Control device of an automotive vehicle and method for controlling the speed of an automotive vehicle

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