DE4005812C1 - Motor vehicle suspension level regulator - has sensor assigned to rear axle and sensor in passenger compartment producing load signal with control unit evaluating signals - Google Patents

Motor vehicle suspension level regulator - has sensor assigned to rear axle and sensor in passenger compartment producing load signal with control unit evaluating signals

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Publication number
DE4005812C1
DE4005812C1 DE19904005812 DE4005812A DE4005812C1 DE 4005812 C1 DE4005812 C1 DE 4005812C1 DE 19904005812 DE19904005812 DE 19904005812 DE 4005812 A DE4005812 A DE 4005812A DE 4005812 C1 DE4005812 C1 DE 4005812C1
Authority
DE
Germany
Prior art keywords
sensor
signal
rear axle
control unit
motor vehicle
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.)
Expired - Fee Related
Application number
DE19904005812
Other languages
German (de)
Inventor
Michael Dr. 8401 Alteglofsheim De Ulm
Hans-Georg 8405 Donaustauf De Kumpfmueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19904005812 priority Critical patent/DE4005812C1/en
Application granted granted Critical
Publication of DE4005812C1 publication Critical patent/DE4005812C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • 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
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B60G2400/62—Seat occupation; Passenger presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B60G2500/32—Height or ground clearance of only one vehicle part or side
    • B60G2500/324—Height or ground clearance of only one vehicle part or side only rear part
    • 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
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/10—Indexing codes relating to particular vehicle conditions
    • B60Q2300/13—Attitude of the vehicle body
    • B60Q2300/132—Pitch
    • 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
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/20—Indexing codes relating to the driver or the passengers
    • B60Q2300/22—Seat occupation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The automobile levelling system uses a sensor (8) associated with the rear axle, providing a signal representing the height of the vehicle chassis. The sensor signal is fed to a control device (9) for providing a setting signal for a setting device (10) adjusting the chassis height. A second sensor (16) within the passenger space providing a signal representing the loading the the seated passengers, similarly fed to the control device (9), to provide a further setting signal for the setting device (10). Pref., a respective load sensor (16) is positioned beneath each front passenger seat (18,19). The setting device (10) pref. uses a pneumatically operated setting cylinder. ADVANTAGE - Keeps headlamp setting in permissible region.

Description

Die Erfindung betrifft eine Nivellierungsregelung für ein Kraft­ fahrzeug gemäß Oberbegriff von Patentanspruch 1.The invention relates to a leveling control for a force Vehicle according to the preamble of claim 1.

Die Nivellierung eines Kraftfahrzeuges, d. h. die Ausrichtung auf straßenparallele Lage, erfolgt üblicherweise in Verbindung mit einer Niveauregelung, d. h. mit einer Regelung auf einen vorgegebenen Abstand zur Straßenoberfläche. Eine solche Niveaure­ gelung erreicht damit zum einen, eine ausreichende Bodenfreiheit des Kraftfahrzeugs zu sichern, und zum anderen sorgt sie dafür, daß die Lichtstrahlmittelachse der Frontscheinwerfer innerhalb eines zulässigen Bereichs bleibt.The leveling of a motor vehicle, i. H. the alignment parallel to the road, usually done in conjunction with a level control, d. H. with a regulation on one given distance to the road surface. Such levels On the one hand, this achieves sufficient ground clearance of the motor vehicle, and on the other hand it ensures that the light beam central axis of the headlights within within a permissible range.

Eine bekannte Schaltungsanordnung zum Steuern der Höheneinstel­ lung von Fahrzeugen weist im Bereich der Vorderachse und im Bereich der Hinterachse Detektoren auf, und zwar jeweils einen ersten Detektor, der ein Signal abgibt, wenn die Fahrzeughöhe niedriger als ein vorgegebener Bezugshöhenbereich ist, sowie einen zweiten Detektor, der ein Befehlssignal für die Fahrzeug­ höheneinstellung erzeugt (DE-A1 31 01 247). Derartige Detekto­ ren oder Sensoren sind recht aufwendig in der Herstellung, zumal der Detektor für die Vorderachse, da er in seiner Einbau­ stellung einer starken Verschmutzung ausgesetzt ist und trotz­ dem zuverlässig arbeiten soll.A known circuit arrangement for controlling the height adjustment development of vehicles points in the area of the front axle and Area of the rear axle detectors, one at a time first detector that emits a signal when the vehicle height is lower than a predetermined reference height range, and a second detector that sends a command signal to the vehicle height adjustment generated (DE-A1 31 01 247). Such a detector sensors or sensors are quite complex to manufacture, especially the detector for the front axle, because it is installed position is exposed to heavy pollution and despite who should work reliably.

Derartige Detektoren werden auch direkt, d. h. ohne Niveaurege­ lung, zur Scheinwerfereinstellung mittels getrennter Stellan­ triebe herangezogen (DE-OS 31 29 891).Such detectors are also direct, i. H. without level control for headlight adjustment using separate actuators drives used (DE-OS 31 29 891).

Der Erfindung liegt die Aufgabe zugrunde, mit geringem Aufwand eine zuverlässig arbeitende Nivellierungsregelung für ein Kraft­ fahrzeug zu schaffen, die die Scheinwerfereinstellung im zulässi­ gen Bereich hält. The invention has for its object with little effort a reliable leveling control for a force to create vehicle that the headlight setting in the permissible towards the area.  

Erfindungsgemäß wird diese Aufgabe durch eine Nivellierungsre­ gelung mit den Merkmalen des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by a leveling solved with the features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteran­ sprüchen niedergelegt.Advantageous developments of the invention are in the Unteran sayings.

Für die erfindungsgemäße Nivellierungsregelung werden zusätzlich ledig­ lich einer oder mehrere einfache, als Schalter ausgebildete Sensoren benötigt. Vorteilhaft ist außerdem, daß die Sensoren in einem Bereich angebracht werden, in dem sie nicht durch Spritzwasser, Steinschlag o. ä. gefährdet sind.For the leveling control according to the invention are additionally single Lich one or more simple, trained as a switch Sensors needed. It is also advantageous that the sensors  be installed in an area where they cannot pass through Splashing water, stone chips or the like are at risk.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung erläutert. Es zeigtAn embodiment of the invention is described below the drawing explained. It shows

Fig. 1 einen mit einer Nivellierungsregelung versehenen Perso­ nenkraftwagen in einer schematischen Darstellung, und Fig. 1 is provided with a leveling control passenger car in a schematic representation, and

Fig. 2 das Blockschaltbild einer Nivellierungsregelung gemäß der Erfindung. Fig. 2 shows the block diagram of a leveling control according to the invention.

Bei einem Kraftfahrzeug 1 muß unter allen Beladungszuständen die korrekt eingestellte Lichtstrahlmittelachse 3 der Front­ scheinwerfer 4 - oder auch die Oberkante des Abblendlicht­ strahls - innerhalb eines vorgeschriebenen Bereiches 5 liegen.In a motor vehicle 1 , the correctly set light beam center axis 3 of the front headlights 4 - or the upper edge of the low beam - must be within a prescribed range 5 under all loading conditions.

Bei ungünstigen Beladungszuständen des Kraftfahrzeugs 1 kann es, abhängig auch z. B. von der Federsteifigkeit der vorderen Achsfedern, vorkommen, daß die Lichtstrahlmittelachse 3 den zulässigen Bereich 5 nach oben verläßt und die durch eine ge­ strichelte Linie 6 angedeutete Lage einnimmt, d. h. sie weicht von der idealen Mittellage um einen Winkel ab. Ein solcher ungünstiger Beladungszustand ist insbesondere dann gegeben, wenn auf der Hinterachse die volle zulässige Achslast (z. B. durch starke Beladung des Kofferraums) liegt und im Fahrgast­ raum als einzige Last der Fahrer sitzt.In the case of unfavorable loading conditions of the motor vehicle 1 , it may also depend, for. B. from the spring stiffness of the front axle springs, that the light beam center axis 3 leaves the permissible range 5 upwards and takes the position indicated by a dashed line 6 ge, ie it deviates from the ideal central position by an angle. Such an unfavorable loading condition is particularly given when the full permissible axle load (e.g. due to heavy loading of the trunk) lies on the rear axle and the driver's seat is the only load in the passenger compartment.

Die Nivellierungsregelung an der Hinterachse besteht im wesent­ lichen aus folgenden Bestandteilen: einem ersten Sensor 8, der hier als kontinuierlich den Federweg messender Wegsensor ausge­ bildet ist. Er mißt den Abstand zwischen einem nicht gefederten und einem gefederten Teil des Kraftfahrzeugs, z. B. den Abstand zwischen der Hinterachse und dem Chassis, der ein Maß für die Bodenfreiheit 2 ist. Ein Steuergerät oder Regler 9 wertet die Sensorsignale aus und gibt entsprechende Stellsignale an in Stellglied 10, das hier als pneumatischer Stellzylinder ausgeführt ist. Die erforderliche Druckluft wird von einem Kompressor 11 geliefert, der von einem Motor 12 angetrieben wird. Ein Auslaßventil 14 wird ebenfalls von dem Steuergerät 9 gesteuert. Die (elektrischen) Signallei­ tungen sindin Fig. 1 mit einfachem Strich, die Druckluftlei­ tungen mit Doppelstrich gezeichnet. Pfeile geben die Richtung des Signal- bzw. Wirkflusses an.The leveling control on the rear axle consists essentially of the following components: a first sensor 8 , which is formed here as a continuously measuring the travel travel sensor. It measures the distance between an unsprung and a sprung part of the motor vehicle, e.g. B. the distance between the rear axle and the chassis, which is a measure of the ground clearance 2 . A control unit or controller 9 evaluates the sensor signals and outputs corresponding actuating signals in actuator 10 , which is designed here as a pneumatic actuating cylinder. The required compressed air is supplied by a compressor 11 which is driven by a motor 12 . An outlet valve 14 is also controlled by the control unit 9 . The (electrical) signal lines are drawn in Fig. 1 with a single line, the compressed air lines with a double line. Arrows indicate the direction of the signal or active flow.

Federt bei den erwähnten ungünstigen Ladungszuständen das Kraftfahrzeug 1 an der Vorderachse zu stark aus, so daß die Lichtstrahlmittelachse 3 den vorgeschriebenen Bereich 5 ver­ läßt, so erhöht die Regelung die Sollhubhöhe an der Hinterachse zusätzlich, bis das Kraftfahrzeug wieder die erforderliche ho­ rizontale Lage einnimmt. Der Beladungszustand im vorderen Teil des Perso­ nenkraftwagens 1 wird mit einem zweiten Sensor 16 gemessen, der als Lastschalter ausgebildet und z. B. in dem Beifahrersitz montiert ist. Weitere Einzelheiten werden anhand von Fig. 2 erläutert.Springs in the unfavorable charge conditions mentioned the motor vehicle 1 on the front axle too strong, so that the light beam central axis 3 leaves the prescribed area 5 ver, the control increases the desired lifting height on the rear axle additionally until the motor vehicle again assumes the required ho horizontal position. The loading state in the front part of the passenger car 1 is measured with a second sensor 16 , which is designed as a load switch and z. B. is mounted in the front passenger seat. Further details are explained with reference to FIG. 2.

Zumindest der Beifahrersitz 18 ist mit einem solchen Lastsensor oder Lastschalter 16 versehen, es können solche Lastschalter aber auch an dem Fahrersitz und gegebenenfalls an anderen Fahr­ gastsitzen vorgesehen sein (Fig. 2). Die den Zustand der Last­ schalter 16 anzeigenden Signale gelangen über Leitungen 20, 21 zu dem Steuergerät 9 und werden dort ausgewertet. Das Steuerge­ rät 9 empfängt über eine weitere Leitung 22 die Signale des er­ sten Sensors 8, der z. B. die Hubbewegung des Kolbens 23 des an der Hinterachse angeordneten Stellgliedes 10 mißt. Signalisiert der Sensor 8 ein zu tief liegendes Wagenheck, so erzeugt das Steuergerät 9 Stellsignale, die über eine Leitung 24 zu dem Mo­ tor 12 gelangen und zu einer Erhöhung des Luftdruckes durch den Kompressor 11 führen. Die auf den Stellzylinder 10 einwirkende Druckerhöhung bewirkt eine Anhebung des Fahrzeughecks. At least the passenger seat 18 is provided with such a load sensor or load switch 16 , but such load switches can also be provided on the driver's seat and, if appropriate, on other driver's seats ( FIG. 2). The signals indicating the state of the load switch 16 reach the control unit 9 via lines 20, 21 and are evaluated there. The Steuerge advises 9 receives the signals of the most sensor 8 via a further line 22 , the z. B. measures the stroke movement of the piston 23 of the actuator 10 arranged on the rear axle. If the sensor 8 signals that the rear of the vehicle is too low, the control unit 9 generates control signals which reach the motor 12 via a line 24 and lead to an increase in the air pressure through the compressor 11 . The pressure increase acting on the actuating cylinder 10 causes the rear of the vehicle to be raised.

Die Signale des oder der Lastschalter 16, die als Ein-/Aus-Kon­ takte ausgebildet sind, bewirken, daß das Steuergerät 9 zusätz­ liche Stellsignale erzeugt. Mit diesen Stellsignalen wird die (statische) Sollhubhöhe an der Hinterachse stufenweise so ver­ ändert, daß die Lichtstrahlmittelachse 2 wieder in den vorge­ schriebenen Bereich 5 kommt. Dabei lautet die Einstellregel für das Steuergerät z. B.: Ist der Beifahrersitz nicht besetzt, so wird die Sollhubhöhe für die Hinterachse um einen vorgegebenen Wert erhöht.The signals of the or the load switch 16 , which are designed as on / off contacts, cause the control unit 9 to generate additional control signals. With these control signals, the (static) target lifting height on the rear axle is gradually changed so that the light beam center axis 2 comes again in the prescribed area 5 . The setting rule for the control unit is z. For example: If the front passenger seat is not occupied, the desired lifting height for the rear axle is increased by a predetermined value.

Über eine Leitung 25 gelangen weitere Stellsignale zu dem An­ trieb 26 des Auslaßventils 16 und schließen oder öffnen dieses nach Bedarf.Via a line 25 get more control signals to the on drive 26 of the outlet valve 16 and close or open it as needed.

Claims (5)

1. Nivellierungsregelung für ein Kraftfahrzeug, die aufweist:
  • - einen im Bereich der Hinterachse angeordneten ersten Sensor (8), durch den ein der Wagenhöhe entsprechendes Signal er­ zeugt wird,
  • - ein Steuergerät (9), in dem das Signal des ersten Sensors (8) ausgewertet und ein Stellsignal erzeugt wird, und
  • - ein Stellglied (10) an der Hinterachse, durch das das Stellsignal in eine Ände­ rung der Wagenhöhe umgesetzt wird,
1. Leveling regulation for a motor vehicle, which comprises:
  • a first sensor ( 8 ) arranged in the area of the rear axle, by which a signal corresponding to the car height is generated,
  • - A control unit ( 9 ) in which the signal of the first sensor ( 8 ) is evaluated and an actuating signal is generated, and
  • - An actuator ( 10 ) on the rear axle through which the control signal is implemented in a change of the carriage height,
dadurch gekennzeichnet,characterized,
  • - daß in dem Innern des Fahrgastraumes ein zweiter Sensor (16) angeordnet ist, durch den ein der Belastung des Fahrgastrau­ mes entsprechendes Lastsignal erzeugt wird, und- That a second sensor ( 16 ) is arranged in the interior of the passenger compartment by which a load signal corresponding to the load of the passenger compartment is generated, and
  • - daß das Lastsignal in dem Steuergerät (9) ausgewertet und ein über das Stellglied (10) die Wagenhöhe steuerndes weiteres Stellsignal erzeugt wird.- That the load signal is evaluated in the control unit ( 9 ) and a further control signal is generated which controls the car height via the actuator ( 10 ).
2. Nivellierungsregulierung nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Sensor (16) als ein die Belastung mindestens ei­ nes der Sitze (18) anzeigender Lastsensor ausgebildet ist.2. Leveling regulation according to claim 1, characterized in that the second sensor ( 16 ) is designed as a load sensor indicating the load of at least one of the seats ( 18 ). 3. Nivellierungsregulierung nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Sensor (16) als ein die Besetzung eines oder beider Vordersitze (18; 19) anzeigender Belastungsschalter aus­ gebildet ist.3. leveling control according to claim 1, characterized in that the second sensor ( 16 ) as a occupancy of one or both front seats ( 18; 19 ) indicating load switch is formed. 4. Nivellierungsregulierung nach Anspruch 1, dadurch gekennzeichnet, daß das Stellglied (10) einen pneumatisch betätigten Stellzy­ linder enthält.4. leveling control according to claim 1, characterized in that the actuator ( 10 ) contains a pneumatically actuated Stellzy cylinder.
DE19904005812 1990-02-23 1990-02-23 Motor vehicle suspension level regulator - has sensor assigned to rear axle and sensor in passenger compartment producing load signal with control unit evaluating signals Expired - Fee Related DE4005812C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904005812 DE4005812C1 (en) 1990-02-23 1990-02-23 Motor vehicle suspension level regulator - has sensor assigned to rear axle and sensor in passenger compartment producing load signal with control unit evaluating signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904005812 DE4005812C1 (en) 1990-02-23 1990-02-23 Motor vehicle suspension level regulator - has sensor assigned to rear axle and sensor in passenger compartment producing load signal with control unit evaluating signals

Publications (1)

Publication Number Publication Date
DE4005812C1 true DE4005812C1 (en) 1991-04-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582735A1 (en) * 1992-08-11 1994-02-16 LEDA Logarithmic Electrical Devices for Automation S.r.l. Device for controlling the attitude of a vehicle
EP0803401A2 (en) * 1996-04-22 1997-10-29 Denso Corporation Apparatus for automatically controlling a direction of an optical axis of a vehicle headlight
EP1048523A2 (en) 1999-04-27 2000-11-02 WABCO GmbH & CO. OHG Method for adjusting the lighting distance for vehicle with level variations
EP1134118A3 (en) * 2000-03-13 2001-10-24 Denso Corporation Automatic headlight aiming device for a vehicle
DE19935347B4 (en) * 1999-07-28 2006-09-07 Volkswagen Ag Fog lamp and method for controlling a fog lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101247A1 (en) * 1980-01-17 1982-01-28 Honda Giken Kogyo K.K., Tokyo CIRCUIT ARRANGEMENT FOR CONTROLLING THE HEIGHT ADJUSTMENT OF VEHICLES
DE3129891A1 (en) * 1980-07-31 1982-06-09 Marchal Equip Auto Device for the dynamic adjustment of the position of headlamps of a vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101247A1 (en) * 1980-01-17 1982-01-28 Honda Giken Kogyo K.K., Tokyo CIRCUIT ARRANGEMENT FOR CONTROLLING THE HEIGHT ADJUSTMENT OF VEHICLES
DE3129891A1 (en) * 1980-07-31 1982-06-09 Marchal Equip Auto Device for the dynamic adjustment of the position of headlamps of a vehicle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0582735A1 (en) * 1992-08-11 1994-02-16 LEDA Logarithmic Electrical Devices for Automation S.r.l. Device for controlling the attitude of a vehicle
EP0803401A2 (en) * 1996-04-22 1997-10-29 Denso Corporation Apparatus for automatically controlling a direction of an optical axis of a vehicle headlight
EP0803401A3 (en) * 1996-04-22 1998-08-12 Denso Corporation Apparatus for automatically controlling a direction of an optical axis of a vehicle headlight
EP1048523A2 (en) 1999-04-27 2000-11-02 WABCO GmbH & CO. OHG Method for adjusting the lighting distance for vehicle with level variations
DE19918919A1 (en) * 1999-04-27 2000-11-02 Wabco Gmbh & Co Ohg Procedure for adjusting the headlight range in a vehicle with level adjustment
EP1048523A3 (en) * 1999-04-27 2001-10-31 WABCO GmbH & CO. OHG Method for adjusting the lighting distance for vehicle with level variations
DE19935347B4 (en) * 1999-07-28 2006-09-07 Volkswagen Ag Fog lamp and method for controlling a fog lamp
EP1134118A3 (en) * 2000-03-13 2001-10-24 Denso Corporation Automatic headlight aiming device for a vehicle

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