Hydraulischer Schwingungsdämpfer

Verfahren zur frequenzabhängigen adaptiven Regelung eines Fahrwerks

SUSPENSION CONTROL SYSTEM

Vehicle suspension control system.

A suspension control system for a motor vehicle, comprises: means 2 for detecting vertical acceleration of a vehicle body; means 6, 7 for switching suspension damping forces for front and rear wheels of the vehicle body in at least three steps; means 3 for measuring the differential value of an output signal of the vertical acceleration detecting means 2; and means 4 for setting, according to an output of the measuring means 3, damping forces for the front and rear wheels to soft level simultaneously or setting damping forces for the rear wheels only to soft level and maintaining the damping forces. Other sensors such as for steering position, vehicle speed, accelerator position, brake actuation, also supply signals to the control computor 8 (Fig 3). ...

Hydraulic damper

A one-way passageway J allows a flow of damping fluid in the contraction phase, and a one-way passageway F allows a flow of clamping fluid in the extension phase. A valve element in the form of a hollow control rod 34 has a neutral position in which both of the one-way passageways are open, a first displaced position (as shown) in which the extension phase one-way passageway F is restricted and the contraction phase one-way passageway J is open, and a second displaced position in which the contraction phase one-way passageway J is restricted and the extension phase one-way passageway F is open. ...

SYSTEM FOR CONTROLLING DAMPING FORCE CHARACTERISTIC OF SHOCK ABSORBER OF VEHICLE

SUSPENSION CONTROL APPARATUS FOR AUTOMOTIVE VEHICLE

SUSPENSION CONTROL SYSTEM

CONTROL SYSTEM AND METHOD FOR OPERATING ADJUSTABLE VEHICULAR SUSPENSION UNIT OVER UNDULATING ROAD SURFACES

... of the Invention A system for measuring ride height and relative vertical velocity of a motor vehicle suspension includes a sensor for detecting vertical motion of a wheel and tire assembly which is relatively movable with respect to the chassis of the motor vehicle and a processor operatively connected with the sensor for calculating the relative velocity of the suspension with respect to the chassis. The processor includes a mechanism for comparing the magnitude of the calculated velocity of the road wheel with a set of threshold velocity values and output circuits for producing a control signal in the event that the calculated velocity lies between two of the threshold values. The system also includes an adjustment mechanism operatively connected with the processor and responsive to control signals therefrom for adjusting an adjustable suspension unit.

Adaptive suspension control for a motor vehicle

ADJUSTABLE HYDRAULIC DAMPER

Control system for adjustable damping force

Upon searching control parameter used to adjust damping force of a damper from a map in accordance with damper speed and target damping force decided based on moving condition of the vehicle, the map sets the control parameter, which are relatively higher than the actual damping force characteristics, as map data in the area where the damper speed is less than a predetermined value, the area where the noise has the great influence on the sensor outputs. Therefore, it can be prevented that the control parameter of the damping force is varied largely or varied in a short period by the influence of noise, and the driving stability control of the vehicle can be executed exactly and the noise caused by switching the damping force of the damper can be reduced.

System for detecting road roughness for suspension control and automotive suspension control system utilizing thus detected road roughness as control parameter

An automotive suspension control system employs a lateral acceleration sensor monitoring a lateral acceleration exerted on a vehicular body. The output level of the lateral acceleration sensor is processed to detect frequency of a occurrence of lateral acceleration magnitude greater than a predetermined threshold level within a predetermined period of time or a predetermined distance to travel. Judgement is made that the vehicle is on a rough road when the detected frequency becomes higher than or equal to a predetermined rough road criterion. The suspension control system, according to the present invention, is responsive to the judgement of rough road condition, to order softer suspension characteristics for satisfactorily suppressing vehicular body attitude change by absorbing vibration energy.

System for controlling suspension deflection

A method and apparatus for controlling suspension deflection in a semiactive damping system is disclosed. A semiactive control policy operates to set the damper force to a low magnitude when the relative position of the suspension members is within a "null band," and to a high magnitude when the relative position is within an "overshoot" band. The null band is a predefined range of displacement about the equilibrium position of the members and the overshoot band is a range about the end stops. When in the overshoot band, the high damper force limits the incidence of suspension end stop collisions that cause damaging shock inputs to the system. The high damper force is maintained once the overshoot band is entered until the relative position of the members again reaches the equilibrium position. One or more intermediate or "active" bands are defined to exist between the null and overshoot bands. When in the active band(s), the damper force is set to an intermediate magnitude to thus stiffen ...

Suspension controller

A suspension controller for improving the riding comfort, particularly for preventing bumping of bound stoppers or rebound stoppers against the vehicle body includes: a vehicle height detection means for detecting a vehicle height at a front wheel and for generating a vehicle height signal according to the distance; a conversion means for converting the detected vehicle height signal into a corresponding converted height signal, wherein the converted height signal increases more sharply than the actual vehicle height signal when the actual vehicle height signal is greater then a preset value and decreases sharply when the vehicle height signal is less than another preset value; a control means for generating a suspension characteristic alteration signal depending on the converted height signal; and a suspension characteristic alteration means for altering characteristics of suspensions of the vehicle in response to the suspension characteristic alteration signal.

Electronically-controlled suspension apparatus and damping force control method

Vehicular suspension system

Apparatus and method for controlling damping force characteristic of vehicular shock absorber

Self-regulating single or double tube damper, im particulair for motor vehicles

A self-adjusting single- or twin-tube shock absorber having a cylinder closed at both ends and filled with at least one damping medium, a piston rod sealingly inserted into the cylinder, and a piston carried on the cylinder side end of the piston rod for dividing a cylinder spaced into two half chambers. The piston rod has a longitudinal bore formed therein and at least one orifice traversing the longitudinal bore for connecting the two half chambers. An electrically controlled distributing slide valve device for opening and closing the orifice includes a slide valve sleeve coaxially surrounding the piston rod and the orifice and movable on the piston rod for opening and closing the orifice. A step motor has a slide valve as a movable part thereof for stepwise adjusting the slide valve and a stator including a plurality of exciter coils and coil formers surrounding the slide valve sleeve and the piston rod. An electronic control circuit supplies electrical switching pulses to the step motor ...

АДАПТИВНОЕ УПРАВЛЕНИЕ ПОДВЕСКОЙ ТРАНСПОРТНОГО СРЕДСТВА

... 1. Система управления подвеской транспортного средства (1), имеющего ходовую часть и колеса (15, 16), соединенные с ходовой частью посредством системы (17) подвески, жесткость которой изменяется под управлением системы управления подвеской, отличающаяся тем, что она содержит контроллер (8), выполненный с возможностью автономного изменения жесткости системы (17) подвески в зависимости от текущего режима движения транспортного средства. ! 2. Система по п.1, в которой контроллер (8) соединен с датчиком (9) поперечного ускорения и выполнен с возможностью определения различий между режимом движения с высоким поперечным ускорением и режимом движения с низким поперечным ускорением (S10, S11) и установки более высокой жесткости системы (17) подвески в режиме с высоким поперечным ускорением, чем в режиме с низким поперечным ускорением (S44, S45; S51, S53, S54). ! 3. Система по п.1 или 2, в которой контроллер (8) соединен с датчиком угловой (10) скорости рыскания и выполнен с возможностью определения ...

Steuereinrichtung zum Einstellen der Dämpfungskraft einer Fahrzeugaufhängung

Verfahren und Vorrichtung zur betriebsmäßigen Beeinflussung von Dämpfungsbaugruppen eines Fahrzeugs

Aufhängungssteuerungssystem für die Dämpfungscharakteristik in einem Kraftfahrzeug

Self-controlling shock absorber, in particular for motor vehicles

The invention relates to a controllable shock absorber, in particular for motor vehicles, consisting of a cylinder with damping medium and piston rod which bears a piston at its end. The piston rod has a longitudinal bore and a transverse bore which penetrates the latter and can be closed off by means of an electrically controlled control slide which can be moved by means of an electrical coil arranged on the piston rod. The control slide is a rotary slide valve which in its wall has a radial bore which clears the transverse bore to a greater or lesser extent, the rotary slide valve being constructed as a rotor of a step motor whose stator is composed of a multiplicity of magnets with excitation coils and which are arranged around the piston rod. Furthermore, an electronic control circuit is arranged inside the cylinder, which circuit supplies the electrical switching pulses to the step motor as a function of the input data for the purpose of incrementally rotating the rotary slide valve ...

HYDRAULIC DAMPER

DAMPING FORCE ADJUSTING HYDRAULIC SHOCK ABSORBER

Controlling damping characteristic of vehicular shock absorber

A control signal V is generated according to the state in which a steering system is operated, the control signal being converted to a drive signal to input to a damping force characteristic changing member (stepping motor and adjuster) so that the damping force characteristic of the corresponding one of the shock absorbers is changed to a desired damping force characteristic. The control signal V is a signal synthesized with a bounce rate signal based on a vertical sprung mass velocity signal, a roll rate signal determined on the basis of a difference between both right and left vertical sprung mass velocity signals, a roll rate (displacement) signal determined on the basis of the above-mentioned difference, a steering angular velocity signal at a predetermined rate of distribution eta . The predetermined rate of distribution (signal synthesis) is varied according to the vehicle speed. ...

ADJUSTABLE VALVE FUER A SHOCK-MOUNT.

ACTIVE VEHICLE SUSPENSION UNIT

DIGITAL SUSPENSION SYSTEM

... 28 A digital suspension system for a wheeled vehicle incorporates digital hydraulic actuators at each wheel and includes a system for sensing lateral and longitudinal accelerations of a body portion of the vehicle and the positionof each wheel relative to the body and provides this information to a computer. The computer computes the forces required at each wheel and controls the digitalhydraulic actuator at each wheel by adjusting in increments the force applied ateach actuator between the wheel and the body to maintain the body portion of the vehicle in a substantially stable position. Preferably the hydraulic actuator used in the suspension system will be, formed by an assembly including a first element, a cylinder, a body section and a chamber. The first element is providedwith a first set of a plurality of different sized piston cavities and piston elements which cooperate with a second set of piston elements and piston cavities respectively formed on a second element. The second element ...

SUSPENSION CONTROL APPARATUS

Vehicle behavior during cornering and turning is correctly determined by computation and map-retrieval from output signal (V) of a vehicle speed sensor and output signal (.omega. y) of a yaw angular velocity sensor for detecting angular velocity about a yaw axis of the vehicle. Rolling motion of the vehicle during normal turning or quick turning is restrained by increasing damping force of shock absorbers controlled by the suspension control apparatus.

HYDRAULIC DAMPER FOR A MOTOR VEHICLE.

METHOD FOR CONTROLLING VEHICLE SHOCK ABSORBERS IN THE PASSAGE OF AN EMERGENCY BACK

Le procédé de pilotage d'amortisseurs de véhicule au passage d'un dos d'âne, comprend des étapes consistant à : - positionner (105) un courant électrique (iav) de pilotage d'amortisseur avant sur une première valeur de courant (iz2) maximale à détection (103) d'un rampant montant de dos d'âne pour obtenir un coefficient d'amortissement élevé sur les roues avant ; - positionner (111) le courant électrique (iav) de pilotage d'amortisseur avant sur une deuxième valeur de courant (iz3) inférieure à la première valeur de courant (iz2) dès que le véhicule (10) a parcouru (108) après détection (103) du rampant montant, une première distance (X1) représentative d'une longueur du rampant montant, pour obtenir un coefficient d'amortissement moins élevé sur les roues avant. The method for controlling vehicle shock absorbers when passing a speed bump includes steps consisting in: - positioning (105) an electric current (iav) for piloting a front shock absorber on a first current value (iz2 ) maximum with detection (103) of a crawling amount of donkey back to obtain a high damping coefficient on the front wheels; positioning (111) the electric current (iav) for controlling the front shock absorber on a second current value (iz3) lower than the first current value (iz2) as soon as the vehicle (10) has traveled (108) after detection (103) of the rising ramp, a first distance (X1) representative of a length of the rising ramp, to obtain a lower damping coefficient on the front wheels.

Apparatus and method for controlling damping force characteristic of vehicular shock absorber

In an apparatus and method for controlling damping force characteristics of respective vehicular shock absorbers, a control signal V is generated according to a state in which a steering system is operated, the control signal being converted to a drive signal to be input to damping force characteristic changing member (stepping motor and adjuster) so that the damping force characteristic of the corresponding one of the shock absorbers is changed to a desired damping force characteristic. The control signal is a signal synthesized with a bounce rate signal based on a vertical sprung mass velocity signal, a roll rate signal determined on the basis of a difference between both right and left vertical sprung mass velocity signals, a roll rate (displacement) signal determined on the basis of the difference described above, a steering angular displacement signal, and a steering angular velocity signal at a predetermined rate of distribution η. The predetermined rate of distribution (signal systhesis ...

System for detecting road roughness for suspension control and automotive suspension control system utilizing thus detected road roughness as control parameter

An automotive suspension control system employs a lateral acceleration sensor monitoring a lateral acceleration exerted on a vehicular body. The output level of the lateral acceleration sensor is processed to detect frequency of a occurrence of lateral acceleration magnitude greater than a predetermined threshold level within a predetermined period of time or a predetermined distance to travel. Judgement is made that the vehicle is on a rough road when the detected frequency becomes higher than or equal to a predetermined rough road criterion. The suspension control system, according to the present invention, is responsive to the judgement of rough road condition, to order softer suspension characteristics for satisfactorily suppressing vehicular body attitude change by absorbing vibration energy.

SUSPENSION CONTROL DEVICE

A suspension control device including a control device for variably controlling a damping force of a suspension to an optimum value by determining a magnitude of acceleration is vertical opposite directions of a vehicle body which magnitude is equal to or greater than a predetermined level and measuring the accumulated duration time of a sprung resonance which is detected by a cycle of vibration of the vehicle body from a timing of the determination of the magnitude. In another aspect, the suspension control device includes a control device for outputting a command for increasing a damping force when a magnitude of acceleration in vertical opposite directions of a vehicle body is determined to be equal to or greater than a predetermined level, and measuring the number of repetitions of a sprung resonance which is detected by measuring a cycle of vibration of the vehicle body from a timing of the determination of the magnitude. The control device maintains the damping force at a high level ...

METHOD FOR CONTROLLING AND ADJUSTING DIGITALLY OR ANALOGICALLY ADJUSTABLE SHOCK ABSORBERS

Suspension system for motor vehicle having variable suspension characteristics

Suspension mechanisms for motor vehicle include dampers of variable damping powers and air springs of variable spring coefficients so that the suspension characteristics are changed between soft and hard modes. The suspension mechanisms are provided with a controller for producing a control signal only when a differential value between a value of a last steering angle and an average value of steering angles is larger than a predetermined value to change the suspension characteristics to the hard mode. In accordance with this arrangement, the suspension characteristics are changed to the hard mode only when the rolling angle of the vehicle exceeds a predetermined value.

Automotive vehicle suspension control system

Dämpfungskraftsteuer- bzw. -regelsystem für den Schwingungsdämpfer eines Kraftfahrzeuges

Self-adjusting shock absorber, especially for motor vehicles

The invention relates to a self-adjusting shock absorber, especially for motor vehicles, which comprises a cylinder closed at both ends and is filled with at least one damping medium and has a piston rod which dips into the cylinder in a sealed fashion and which on its cylinder-side end carries a piston which is sealed off from the cylinder wall and divides the cylinder chamber into two chamber halves, the piston rod, starting from its end up to the joining of the two chamber halves having a longitudinal bore in the area of the piston and above this at least two radial passages passing through the longitudinal bore which are displaceable by means of an electrically controlled control slide valve which is moved by means of a coil according to patent application P 3312899.5. Baffle plates, which, standing parallel to the piston rod, are fixed to this and aligned pointing radially outwards, are arranged in front of the passages.

Kraftfahrzeugaufhängungssystem zur Antirollsteuerung

Car suspension dampers with automatic adjustment of properties - has sensors measuring vehicle speed and vertical speed with output to control system adjusting damping coefficients

The suspension system of a car has pairs of front and rear dampers with adjustable damping characteristics. The damping coefficients in both compression strokes and extension strokes can be varied between preset upper and lower values, the values being different for front and rear dampers. There is a sensor to measure vehicle speed and when the speed is effectively zero, the coefficients are increased by the control system for the front dampers on the extension stroke and the rear dampers on the compression stroke. There is a sensor to measure vertical speed whose output is used for further modification of damping coefficients. ADVANTAGE Damping properties altered to suit vehicle motion ...

Schwingungsdämpfer mit veränderbarer Dämpfungscharakteristik

Active vehicle suspension apparatus

A vehicle suspension apparatus having a fluid spring chamber provided for each wheel and inserted between the wheel and a vehicle body, a fluid supply unit for supplying a fluid to each fluid spring chamber through a supply valve, a fluid exhaust unit for exhausting the fluid from each fluid spring chamber through an exhaust valve, a roll amount detector for detecting a roll amount of the vehicle body, and a roll controller for setting a control target corresponding to the roll amount detected by the roll amount detector and executing roll control in which the supply valves corresponding to the fluid spring chambers at a contracting side with respect to a direction of roll generated in the vehicle body and the exhaust valves corresponding to the fluid spring chambers at an expanding side are opened in accordance with the control target, includes a plurality of memories, provided in the roll controller, each for storing a control target corresponding to the roll amount of the vehicle body ...

SYSTEM AND METHOD FOR CONTROLLING DAMPING FORCE CHARACTERISTIC OF SHOCK ABSORBER APPLICABLE TO AUTOMOTIVE SUSPENSION

HYDRAULIC DAMPER

SHOCK ABSORBER WITH DAMPING VALVE STRUCTURE HAVING WIDE RANGE VARIABLE DAMPING CHARACTERISTICS

Anti-roll mechanism for motor vehicle - uses hydraulic cylinder to connect anti-roll bar to suspension and computer control of coupling between chambers of cylinder

The anti-roll mechanism has a hydraulic cylinder connected between the end of the anti-roll bar and an arm of the wheel suspension. The two chambers (16,17) of the cylinder can be interconnected by a hydraulic circuit (25) so that it operates as a damper. A second hydraulic circuit (27) opens or closes under the pressure of fluid in a chamber of the cylinder to ensure return of the piston (15) to a predetermined position. The coupling between the two chambers is controlled by a three-way solenoid valve (23) that is controlled by a computer (32), which operates the valve in response to transverse acceleration, steering angle and speed of rotation of steering wheel, or the speed of the vehicle. ADVANTAGE - Provides automatic 'decoupling' of anti-roll bar to adapt to vehicle operating conditions.

HYDRAULIC SUSPENSION SYSTEM OF A VEHICLE

L'invention concerne un système de suspension hydraulique d'un véhicule automobile, comprenant une butée d'attaque hydraulique (9b) dont le piston et le cylindre sont déplacés l'un par rapport à l'autre par le piston d'un amortisseur (1b) lorsqu'il atteint une première course en attaque, et une butée d'attaque mécanique (7b) comprimée entre le cylindre de l'amortisseur et la caisse du véhicule lorsqu'il atteint une seconde course en attaque dans le cylindre de l'amortisseur supérieure à la première course, le système de suspension comportant une butée de détente hydraulique (15b) montée dans la chambre de détente du cylindre de l'amortisseur correspondant (1b), et un calculateur (32) agissant sur des moyens de pilotage (30) de l'amortisseur (1b) qui modifient le niveau d'effort généré par le déplacement du piston dans le cylindre. The invention relates to a hydraulic suspension system for a motor vehicle, comprising a hydraulic attack stop (9b), the piston and the cylinder of which are displaced relative to one another by the piston of a shock absorber ( 1b) when it reaches a first stroke in attack, and a mechanical attack stop (7b) compressed between the damper cylinder and the vehicle body when it reaches a second attacking stroke in the cylinder of the damper greater than the first stroke, the suspension system comprising a hydraulic expansion stop (15b) mounted in the expansion chamber of the cylinder of the corresponding damper (1b), and a computer (32) acting on control means ( 30) of the damper (1b) which modify the level of effort generated by the displacement of the piston in the cylinder.

SISTEMA DE SUSPENSAO DE VEICULO

Method and apparatus for controlling shock absorbers

The method and apparatus for controlling shock absorbers is disclosed. The shock absorber comprises a pressure balanced shutter sleeve disposed within the piston rod of the shock absorber. The shutter sleeve has a plurality of flow passages in fluid communication with the lower portion of the working chamber. The shock absorber further comprises an orifice sleeve disposed within the piston rod and being displaceable with respect to the shutter sleeve. The orifice sleeve has a plurality of flow passages in fluid communication with the upper portion of the working chamber. The shock absorber further comprises an actuator for applying torque to the shutter sleeve as well as control means for controlling the application of torque by the actuator.

System for vehicle body roll control utilizing steering angle detection

In this system for vehicle roll control, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. A plurality of working fluid supplying and discharging means are provided corresponding to the actuator assemblies and serve to supply working fluid to the working fluid chambers and to discharge working fluid from the working fluid chambers. A vehicle speed detection means senses the road speed of the vehicle, and a steering angle detecting means senses the steering angle of the vehicle. A means for computing and control computes a steady state roll angle of the vehicle body from the vehicle speed sensed by the vehicle speed ...

Suspension device for a vehicle

STOSSDAEMPFER MIT VARIABLER DAEMPFUNGSKRAFT UND MIT EINER LINEAREN UND GROSSBEREICHIGEN DAEMPFUNGSKRAFTAENDERUNG IN ABHAENIGKEIT VON DER KOLBENHUBGESCHWINDIGKEIT

VERFAHREN ZUR STEUERUNG UND REGELUNG VON DIGITAL ODER ANALOG EINSTELLBAREN STOSSDÄMPFERN

Aufhängungsregler.

SUSPENSION CONTROL DEVICE

Controlling damping force characteristic of shock absorber applicable to automotive suspension

In controlling a damper of a vehicular suspension, when the vehicle runs on a paved road and a frequency at which the detected unsprung mass acceleration exceeds a dead zone is below a set value, the damping force characteristic is optimally controlled in a predetermined variable range. When the vehicle runs on a rough road and a frequency at which the detected acceleration exceeds the dead zone is above the set value, a minimum damping force limit of the predetermined variable range of the damping force characteristic is shifted toward a relatively high damping force side. The dead zone is set with an average value of the acceleration of an unsprung mass as a center. Hence, when the vehicle turns and zigzags, the vehicular body is inclined so that an absolute value of the unsprung mass acceleration is largely changed. Accordingly, the average value of the acceleration is changed and the dead zone is shifted. However, the frequency at which the unsprung mass acceleration exceeds the dead zone accurately corresponds to a situation on a road surface and the damping force characteristic is accurately controlled according to the road surface condition, without influence from the vehicular change in posture. <IMAGE>

Damping force control type hydraulic shock absorber

SUSPENSION SYSTEM

SUSPENSION CONTROL SYSTEM

SHOCK ABSORBER WITH DAMPING VALVE STRUCTURE HAVING WIDE RANGE VARIABLE DAMPING CHARACTERISTICS

ACTIVE HANGING UP SYSTEM FOR VEHICLE.

ADAPTIVE HANGING UP CONTROL FOR A MOTOR VEHICLE

Vehicle shock absorber system and accessory thereof

A vehicle shock absorber system configured with more than one pressure cylinder that provides advantageous damping characteristics for different loads. In accordance with one aspect of the present application, there is provided a vehicle shock absorber system having a primary pressure cylinder including upper and lower primary chambers separated by a primary piston head, an auxiliary pressure cylinder including upper and lower auxiliary chambers separated by an auxiliary piston head, a first connection conduit connecting the upper primary chamber and the upper auxiliary chamber, a second connection conduit connecting the lower primary chamber and the lower auxiliary chamber, and a cylinder valve arrangement configured to regulate fluid flow to the auxiliary pressure cylinder.

SUSPENSION CONTROL APPARATUS

SUSPENSION CONTROL APPARATUS

ABSTRACT Bumpy road driving state of a vehicle during driving is correctly sensed by computation using the output signal from a roll angular velocity sensor for detecting angular velocity about a roll axis of the vehicle and an output signal from a vehicle speed sensor, and the suspension control apparatus continues to control the damping force of the shock absorbers after the bumpy road driving has been finished, in order to enlarge the road contact area of the tire and improve the ride comfort and driving stability of the vehicle.

Control device of a whole of suspension interposed between a wheel and the case of a véhiculeautomobile

Le dispositif comprend a) un premier contrôleur (5) sensible à la vitesse verticale (VC ) et à l'accélération verticale (GAMMAC ) de la caisse du véhicule pour élaborer un premier signal de commande virtuel de moyens de réglage de l'ensemble de suspension, propre à optimiser le confort du véhicule, b) un deuxième contrôleur (6) sensible à la déflexion (DR ) de la roue et à sa vitesse verticale (VR ) par rapport au sol pour élaborer un deuxième signal de commande virtuel desdits moyens de réglage, propre à optimiser le contact roue/sol, et c) des moyens de supervision (10) sensibles aux premier et deuxième signaux de commande virtuels pour élaborer un signal de commande réel appliqué aux moyens de réglage, pour régler la réponse de l'ensemble de suspension en fonction d'une stratégie de comportement prédéterminée.

PROCESS AND DEVICE INTEND TO INFLUENCE, ACCORDING TO the OPERATING CONDITIONS, the WHOLE Of DAMPING Of a VEHICLE.

HYDRAULIC DAMPER WITH HOLLOW DRIVING ROD.

Amortisseur hydraulique réglable

Un amortisseur hydraulique réglable possède un réglage de base et peut, en plus, être réglé par voie électromagnétique pour être plus mou ou plus dur. Pour le réglage supplémentaire, on utilise une armature d'électroaimant 11 qui coopère avec deux bobines 12 et 13 et est capable d'amener un tiroir de vanne 10 depuis une position normale (réglage de base) à l'une ou l'autre de deux positions. L'amortisseur est destiné à être utilisé dans les véhicules automobiles.

APPARATUS AND METHOD FOR CONTROLLING DAMPING FORCE CHARACTERISTIC OF VEHICULAR SHOCK ABSORBER

차량 완충기들의 감쇠력을 제어하는 장치 및 방법에 있어서, 차량의 피치 비 또는 롤 비 중의 적어도 하나가 전륜들 상에 위치한 그리고 후방 우측 및 좌측 차륜들 중의 어느 하나에 위치한 차륜 속도 검출기들 중의 적어도 세 개의 출력 신호들을 기초로하여 유도된다. An apparatus and method for controlling the damping force of vehicle shock absorbers, the output of at least three of the wheel speed detectors at least one of the vehicle's pitch ratio or roll ratio located on the front wheels and located on either one of the rear right and left wheels Derived based on the signals.

SUSPENSION CONTROL SYSTEM

Suspension control system for automotive vehicle suspension suppressing bouncing

A suspension control system is able to precisely adapt damping characteristics to the road condition, even when the vehicle passes over bump, manhole, hole and so forth. The suspension control system includes a road sensor which produces a road condition indicative signal. A controller is adapted to recognize bump, manhole, hole and so forth which causes temporary bounding and rebounding motion for the vehicle, on the basis of the road condition indicative signal from the road sensor. The controller produces a control signal to harden damping characteristics of suspension when bump, manhole, hole and so forth is detected with a given delay time. The delay time for changing damping characteristics is different at the front and rear suspension from each other so that each of the front and rear suspension can be stiffened at a good timing.

Method and apparatus for an adjustable damper

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.

ACTIVE VEHICLE SUSPENSION UNIT

A hydraulic shock absorber includes a generally vertical cylinder receiving therein hydraulic liquid, a piston working in the cyliner and partioning the interior thereof into two liquid chambers, an upper and a lower chamber. An improved damping control is achieved by a circuit (10) forming a connection between the two liquid chambers (1, 2), a further circuit (9) connecting the reservoir (3) to the lower liquid chamber (2), each of the two circuits (9, 10) including a controllable first check valve (C1) and second check valve (C2), respectively, that can each take two states of operation under the action of a control means (20), in a first state locking the valve in a closed position cutting off the forward flow (E1 and E2 repectively) through the check valve (C1 and C2 respectively), and in a second state allowing a free forward flow (E1 and E2 respectively) through the check valve (C1 and C2 respectively), whereas the check valve (C1, C2) in the first state as well as in the second state ...

VEHICLE SUSPENSION APPARATUS

This invention relates to a vehicle suspension apparatus interposed between a vehicle body side and each wheel side and having variable damping force characteristics. The apparatus includes a shock absorber (b) which can switch the damping force characteristics on both extension and contraction sides in a plurality of stages by damping force characteristics changing means (a), and capable of being switched to characteristics under which damping coefficient ratio of the extension side to the contraction side is not greater than 1.0, damping force characteristics control means (e) having normal-time control means (d) for variably controlling the damping force characteristics of each shock absorber (b) on the basis of a car behavior detection signal detected by car behavior detecting means (c), and braking-time correction control means (g) provided in the damping force characteristics control means (e), for switching the damping force characteristics changing means (a) of the shock absorber ...

Pitching-suppressive control system and method for an automotive vehicle suspension

An automotive vehicle suspension has a damper (14) with variable damping characteristics, specifically adjustable damping force. A controller (100) responds to application and release of vehicle brakes by increasing the damping force. Increasing the damping force at the beginning of braking suppresses nose-dive of the vehicle. On the other hand, increasing the damping force at the end of braking suppresses pitching motion of the vehicle. This greatly improves the behavior of the vehicle sprung mass during braking.

Hydraulischer, regelbarer Stossdämpfer.

Aktive Fahrzeugfederung, insbesondere Fahrerhausfederung eines Nutzfahrzeuges

Kontrollsystem für die Dämpfkraft von Stossdämpfern.

VEHICLE SUSPENSION APPARATUS

AUTOMOTIVE SUSPENSION CONTROL

A suspension control system for an automotive vehicle comprises a multi-stage variable damping force shock absorber 7 which is variable of damping characteristics. The control system comprises means 3, 4 for monitoring vehicular driving parameters representing a suspension control parameter, and a plurality of data maps set in a memory unit 63 respectively containing damping characteristics selection patterns for deriving damping characteristics, to which the damping characteristics of the shock absorber are to be adjusted on the basis of the suspension control parameter. Suspension control is performed by working-up a data map in terms of the suspension control parameter for finding the appropriate damping characteristic. Means responsive to the chosen damping characteristic then selects a fresh data map ready for further control. ...

SUSPENSION CONTROL DEVICE

AUTOMOTIVE SUSPENSION SYSTEM WITH ENHANCED RESPONSE CHARACTERISTICS

VEHICLE SHOCK ABSORBER SYSTEM AND ACCESSORY THEREOF

A vehicle shock absorber system configured with more than one pressure cylinder that provides advantageous damping characteristics for different loads. In accordance with one aspect of the present application, there is provided a vehicle shock absorber system having a primary pressure cylinder including upper and lower primary chambers separated by a primary piston head, an auxiliary pressure cylinder including upper and lower auxiliary chambers separated by an auxiliary piston head, a first connection conduit connecting the upper primary chamber and the upper auxiliary chamber, a second connection conduit connecting the lower primary chamber and the lower auxiliary chamber, and a cylinder valve arrangement configured to regulate fluid flow to the auxiliary pressure cylinder.

THE CONTROL DEVICE OF A SUSPENSION ASSEMBLY INTERPOSED BETWEEN A WHEEL AND A BODY OF AN AUTOMOBILE.

HYDRAULIC SUSPENSION SYSTEM OF A VEHICLE

L'invention concerne un système de suspension hydraulique d'un véhicule automobile, comprenant une butée d'attaque hydraulique (9b) dont le piston et le cylindre sont déplacés l'un par rapport à l'autre par le piston d'un amortisseur (1b) lorsqu'il atteint une première course en attaque, et une butée d'attaque mécanique (7b) comprimée entre le cylindre de l'amortisseur et la caisse du véhicule lorsqu'il atteint une seconde course en attaque dans le cylindre de l'amortisseur supérieure à la première course, le système de suspension comportant une butée de détente hydraulique (15b) montée dans la chambre de détente du cylindre de l'amortisseur correspondant (1b), et un calculateur (32) agissant sur des moyens de pilotage (30) de l'amortisseur (1b) qui modifient le niveau d'effort généré par le déplacement du piston dans le cylindre. The invention relates to a hydraulic suspension system for a motor vehicle, comprising a hydraulic attack stop (9b), the piston and the cylinder of which are displaced relative to one another by the piston of a shock absorber ( 1b) when it reaches a first stroke in attack, and a mechanical attack stop (7b) compressed between the damper cylinder and the vehicle body when it reaches a second attacking stroke in the cylinder of the damper greater than the first stroke, the suspension system comprising a hydraulic expansion stop (15b) mounted in the expansion chamber of the cylinder of the corresponding damper (1b), and a computer (32) acting on control means ( 30) of the damper (1b) which modify the level of effort generated by the displacement of the piston in the cylinder.

Method for driving a vehicle damper when a hump passes

Vehicle suspension apparatus

A vehicle suspension apparatus having a fluid spring chamber provided for each wheel and inserted between the wheel and a vehicle body, a fluid supply unit for supplying a fluid to each fluid spring chamber through a supply valve, a fluid exhaust unit for exhausting the fluid from each fluid spring chamber through an exhaust valve, a roll amount detector for detecting a roll amount of the vehicle body, and a roll controller for setting a control target corresponding to the roll amount detected by the roll amount detector and executing roll control in which the supply valves corresponding to the fluid spring chambers at a contracting side with respect to a direction of roll generated in the vehicle body and the exhaust valves corresponding to the fluid spring chambers at an expanding side are opened in accordance with the control target, includes a plurality of memories, provided in the roll controller, each for storing a control target corresponding to the roll amount of the vehicle body ...

Damping coefficient control apparatus for damping mechanism in vehicle suspension system

A damping coefficient control apparatus for a damper device in a suspension mechanism disposed between a sprung mass and an unsprung mass of a wheeled vehicle, wherein an absolute vertical movement velocity of the sprung mass is detected in an absolute space to adjust a damping coefficient of the damper device to a predetermined small value when vertical vibration of the sprung mass tends to be increased and to increase the damping coefficient of the damper device more than the predetermined small value in accordance with an increase of the absolute vertical movement velocity when vertical vibration of the sprung mass tends to be dampened, and wherein the magnitude of vertical vibration of the sprung mass is further detected to adjust a lower limit value of the damping coefficient of the damper device to a larger value than the predetermined small value when the magnitude of vertical vibration of the sprung mass increases.

Electronically-controlled suspension apparatus and damping force control method

An electronically-controlled suspension apparatus includes a first sensing device for detecting a vertical acceleration of a vehicle body; a second sensing device for detecting vertical movements of a vehicle body relative to a wheel axle; and a controller for obtaining a vertical speed of the vehicle body by using the vertical acceleration detected by the first sensing device, obtaining a damper speed of a variable damper by using the vertical movements detected by the second sensing device, calculating a target damping force by using the vertical speed of the vehicle body and the damper speed, and determining a control command value by using the target damping force. The control command value is transmitted from the controller to the actuator of the variable damper to change damping force characteristics of the variable damper.

System for vehicle body roll control detecting and compensating for changes of loaded vehicle weight

In this system for vehicle roll control, a suspension device or an actuator is provided corresponding to each wheel of a vehicle, and resiliently suspends it from the vehicle body. Each such suspension device can alter its hardness or softness characteristics according to a control signal, while similarly the actuators are adapted to alter the suspended height of their wheels. A vehicle speed detecting device senses road speed, a steering angle detecting device senses steering angle, and a device detects the total vehicle body weight. A computing control device computes a predictive roll angle of the vehicle body from road speed and steering angle, and: if suspension devices are provided, controls them to be relatively hard when the absolute value of the predictive roll angle is larger than a threshold value, while controlling them to be relatively soft when the absolute value of the predictive roll angle is less than this threshold value; while, if actuators are provided, when the absolute ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a set of values associated with at least one user-induced input, wherein at least one vehicle suspension damper is coupled to a frame of said vehicle;accessing a set of release thresholds associated with a throttle position and a throttle velocity of said at least one user-induced input;comparing said set of values associated with said at least one user-induced input with a predetermined user-induced input threshold value, to achieve a user-induced input threshold value approach status;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said user-induced input threshold value approach status and said set of release thresholds, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable ...

METHODS AND APPARATUS FOR SUSPENSION SET UP

A method and apparatus are disclosed that assist a user in performing proper setup of a vehicle suspension. A user may utilize a device equipped with an image sensor to assist the user in proper setup of a vehicle suspension. The device executes an application that prompts the user for input and instructs the user to perform a number of steps for adjusting the suspension components. In one embodiment, the application does not communicate with sensors on the vehicle. In another embodiment, the application may communicate with various sensors located on the vehicle to provide feedback to the device during the setup routine. In one embodiment, the device may analyze a digital image of a suspension component to provide feedback about a physical characteristic of the component. 1 "a live view captured by an image sensor of a user's device, said live view including an image of said suspension component; and", 'receiving input related to said suspension component utilizing said input related to said suspension component to determine product information related to said suspension component, said input comprisingproviding instructions regarding said initial set up of said suspension component, wherein said instructions enable a user to properly achieve said initial set up of said suspension component, wherein said providing instructions regarding said initial set up of said suspension component further comprises providing pictures that show said user how to properly achieve said initial set up of said suspension component.. A non-transitory computer-readable storage medium including instructions that, when executed by a processor, cause the processor to perform steps for enabling initial set up of a suspension component of a vehicle, the steps comprising: This patent application is a continuation application of and claims the benefit of co-pending U.S. patent application Ser. No. 16/147,200, filed Sep. 28, 2018, entitled, “METHODS AND APPARATUS FOR SUSPENSION SET UP”, by ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a measured location information associated with a location of a vehicle, wherein a vehicle suspension damper is coupled with a frame of said vehicle, wherein at least a second control signal of said set of control signals comprises measured environmental information;accessing a set of date values;comparing said measured environmental information with predetermined environmental threshold values;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said measured location information, said set of date values and said comparing, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable storage medium having stored thereon, computer-executable instructions that, when executed by a computer, ...

Chassis Arrangement, Method For Levelling A Motor Vehicle, Control Device And Motor Vehicle

A chassis arrangement and method for leveling a vehicle with at least one vibration damper permitting an active height adjustment. The chassis arrangement has a stabilizer having a restoring force that rises with a first slope during a transverse acceleration in a first range up to a first threshold value and has a restoring force which rises with a second slope after the first threshold value in a second range. The second slope is greater than the first slope.

Method and apparatus for an adjustable damper

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a set of values associated a pressure applied to a vehicle component of a vehicle, wherein at least one vehicle suspension damper is coupled to a frame of said vehicle;accessing a set of predetermined vehicle component base-level pressure values associated with said vehicle component;comparing said set of values associated with a pressure applied to said vehicle component with said set of predetermined vehicle component base-level pressure values;based on said comparing, calculating an approximate shift in a center of gravity of said vehicle having occurred;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said calculating and said monitoring, determining a control mode for said at least one vehicle suspension damper that, if actuated, would compensate said vehicle for said shift in said center of gravity; andaccording to said control mode, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein a first control signal of said set of control signals comprises a measured vehicle speed value associated with a movement of a vehicle, a second control signal of said set of control signals comprises a set of values associated with at least one user-induced input, wherein a vehicle suspension damper is coupled with a frame of said vehicle;comparing said measured vehicle speed value with a stored predetermined vehicle speed threshold value that corresponds to said vehicle, to achieve a vehicle speed value threshold approach status;comparing said set of values associated with said at least one user-induced input with a stored predetermined user-induced input threshold value, to achieve a user-induced input threshold value approach status;monitoring a state of a valve within said vehicle suspension damper, wherein said state of said valve controls a damping force within said vehicle suspension damper;based on at least one of said vehicle speed value threshold approach status and said user-induced input threshold value approach status, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces ...

Method and apparatus for an adjustable damper

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1. A non-transitory computer readable storage medium having stored thereon , computer-executable instructions that , when executed by a computer , cause the computer to perform a method for controlling vehicle motion of a vehicle , said method comprising:accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a set of values associated a pressure applied to a vehicle component of a vehicle, wherein at least one vehicle suspension damper is coupled to a frame of said vehicle;accessing a set of predetermined vehicle component base-level pressure values associated with said vehicle component;comparing said set of values associated with a pressure applied to said vehicle component with said set of predetermined vehicle component base-level pressure values;based on said comparing, calculating an approximate shift in a center of gravity of said vehicle having occurred;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said calculating and said monitoring, determining a control mode for said at least one vehicle suspension damper that, if ...

Method and apparatus for an adjustable damper

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a measured acceleration value associated with a movement of a vehicle component of a vehicle, wherein said vehicle component is coupled with a frame of said vehicle via at least one vehicle suspension damper;accessing a set of freefall acceleration threshold values;comparing said measured acceleration value with said set of freefall acceleration threshold values;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said comparing, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable storage medium having stored thereon, computer-executable instructions that, when executed by a computer, cause the computer to perform a method for controlling vehicle motion, said method comprising: ...

METHOD AND APPARATUS FOR AN ADJUSTABLE DAMPER

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper. 1accessing a set of control signals, wherein at least a first control signal of said set of control signals comprises a measured location information associated with a location of a vehicle, wherein a vehicle suspension damper is coupled with a frame of said vehicle, wherein at least a second control signal of said set of control signals comprises measured environmental information;accessing a set of date values;comparing said measured environmental information with predetermined environmental threshold values;monitoring a state of at least one valve within said at least one vehicle suspension damper, wherein said state controls a damping force within said at least one vehicle suspension damper;based on said measured location information, said set of date values and said comparing, determining a control mode for said at least one vehicle suspension damper; andaccording to said control mode and based on said monitoring, regulating damping forces within said at least one vehicle suspension damper by actuating said at least one valve to adjust to a desired state, such that a tilt of said frame is reduced.. A non-transitory computer readable storage medium having stored thereon, computer-executable instructions that, when executed by a computer, ...

Adaptive suspension control for a motor vehicle

A suspension control system for a motor vehicle (1) having a chassis and wheels (15, 16) connected to the chassis by a suspension system (17) the stiffness of which is variable under the control of the suspension control system comprises a controller (8) adapted to modify autonomously the stiffness of the suspension system (17) depending on a current state of motion of the vehicle. List of reference signs 1. motor vehicle 2. combustion engine 3. front axle 4. 1st clutch 5. drive shaft 6. rear axle 7. 2nd clutch 8. controller circuit 9. acceleration sensor 10. yaw rate sensor 11. steering wheel angle sensor 12. accelerator pedal sensor 13. brake sensor 14. 15. front wheel 16. rear wheel 17. shock absorber

Suspension control apparatus

내용 없음. No content.

自動車のサスペンシヨン

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Suspension of car

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Damping force generating device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Device and method for controlled damping of a vehicle

The invention relates to a device for controlled damping of a vehicle, comprising a means for storing a set of controller parameters R1 to Rn for controlling the damping of the unloaded vehicle as a function of the dynamic driving situation thereof 1 to n, a means for detecting a loading condition b of the vehicle, a means for adapting the set of controller parameters R1 to Rn as a function of the detected loading condition b to a set of controller parameters R1b to Rnb, and a means for damping the vehicle as a function of the set of controller parameters R1b to Rnb as a function of the dynamic driving situation thereof 1 to n.

Device and method for controlled damping of a vehicle

A method and device for controlled damping of a vehicle stores a set of controller parameters R 1 to Rn for controlling the damping of the unloaded vehicle as a function of the dynamic driving situation thereof 1 to n, detect a loading condition b of the vehicle, adapt the set of controller parameters R 1 to Rn as a function of the detected loading condition b to a set of controlled parameters R 1 b to Rnb, and dams the vehicle as a function of the set of controller parameters R 1 b to Rnb as a function of the dynamic driving situation thereon 1 to n.

Suspension control system for a vehicle

Device and method for controlling the damping characteristic in a motor vehicle

Control device for setting the damping characteristic of a vehicle suspension

Method for controlling a suspension system for motor vehicles

Ein Aufhängungssystem für ein Kraftfahrzeug beinhaltet wenigstens einen Stoßdämpfer (SA) mit einer Vorrichtung, welche eine Änderung in der Dämpfungskraft-Charakteristik erlaubt, sowie einen ersten Sensor (1) zum Erfassen eines vertikalen Verhaltens des Kraftfahrzeuges, einen zweiten Sensor zum Erfassen eines Rollwinkels des Kraftfahrzeuges während eines Lenkvorganges, einen dritten Sensor zum Erfassen einer Rollrate des Kraftfahrzeuges während des Lenkvorganges und eine Steuereinheit (4). Die Steuereinheit (4) weist einen Grundsteuerteil zur Durchführung einer gewöhnlichen Steuerung der Dämpfungskraft-Charakteristik für den Stoßdämpfer (SA) abhängig von dem erfaßten Vertikalverhalten, einen ersten Rolleinschränkungs-Steuerteil zur Durchführung einer ersten Rolleinschränkungs-Steuerung anstelle der gewöhnlichen oder normalen Steuerung, wenn der erfaßte Rollwinkel gleich oder größer als ein bestimmter Schwellenwert ist und einen zweiten Rolleinschränkungs-Steuerteil zur Durchführung einer zweiten Rolleinschränkungs-Steuerung anstelle der normalen Steuerung auf, wenn die erfaßte Rollrate gleich oder größer als ein bestimmter Schwellenwert ist. Die zweite Rolleinschränkungs-Steuerung macht die Dämpfungskraft-Charakteristik des Stoßdämpfers (SA) höher als die erste Rolleinschränkungs-Steuerung. A suspension system for a motor vehicle includes at least one shock absorber (SA) with a device which allows a change in the damping force characteristic, and a first sensor (1) for detecting a vertical behavior of the motor vehicle, a second sensor for detecting a roll angle of the motor vehicle during a steering process, a third sensor for detecting a roll rate of the motor vehicle during the steering process and a control unit (4). The control unit (4) has a basic control part for performing ordinary control of the damping force characteristic for the shock absorber (SA) depending on the detected vertical behavior, a first role restriction control portion for performing a ...

System for controlling the damping characteristics of vehicle shock absorbers

Patent DE4241488A1

damper device

Die Erfindung betrifft eine Dämpfereinrichtung (10), insbesondere für ein Kraftfahrzeug, mit einem Zylinder (12) und einem in dem Zylinder (12) bewegbar gehaltenen Arbeitskolben (14), welcher zwischen einem ersten Arbeitsraum (16) und einem zweiten Arbeitsraum (18) angeordnet ist. Die Dämpfereinrichtung (10) weist eine die Arbeitsräume (16, 18) unter Umgehung zumindest eines Elements des Arbeitskolbens (14) verbindende Umgehungsleitung (20) auf. Die Umgehungsleitung (20) weist des Weiteren eine Regeleinrichtung (26, 34) auf, mittels welcher ein Volumenstrom eines Fluids durch die Umgehungsleitung (20) einstellbar ist. The invention relates to a damper device (10), in particular for a motor vehicle, having a cylinder (12) and a working piston (14) movably held in the cylinder (12), which is arranged between a first working space (16) and a second working space (18). is arranged. The damper device (10) has a bypass (20) connecting the working spaces (16, 18), bypassing at least one element of the working piston (14). The bypass line (20) further comprises a control device (26, 34), by means of which a volume flow of a fluid through the bypass line (20) is adjustable.

VEHICLE SUSPENSION APPARATUS

차체측과 각 차륜측 사이에 개재되는 감쇄력 가변 특성의 차량 현가 장치이다. 감쇄력 특성 변경 수단(a)에 의해 신장측 및 수축측 감쇄력 특성을 복수 단계로 절환 가능한 동시에, 수축측에 대한 신장측 감쇄 계수비가 1.0이하로 되는 특성의 절환이 가능한 완충기(b)와, 차량 거동 검출 수단(c)에서 검출된 차량 거동 검출 신호를 기초로 하여 각 완충기(b)의 감쇄력 특성을 가변 제어하는 통상시 제어 수단(d)를 갖는 감쇄력 특성 제어 수단(e)과, 감쇄력 특성 제어 수단(e)에 설치되고 제동 상태 검출 수단(f)에서 차량의 제동 상태가 검출된 때에는 완충기(b)의 감쇄력 특성 변경 수단(a)을 수축측에 대한 신장측 감쇄 계수비가 1.0이하로 되는 특성으로 절환하는 제동시 보정 제어 수단(g)을 구비한다. 제동시에 발생하는 차량 거동을 기초로 한 접지 하중의 변동을 제어함으로써 제동력을 확보할 수 있다.

Vehicle suspension adaptive control

FIELD: transport. SUBSTANCE: invention relates to automotive industry. Proposed system comprises suspension control system controller. Said controller allows varying suspension system stiffness depending upon vehicle motion conditions. Said controller is connected with steering wheel turn angle transducer. Said controller allows defining the difference between motion conditions at steering wheel high angular speed and that at low angular speed. Said controller allows setting suspension higher stiffness at higher angular speed of steering wheel compared with that at lower angular speed. EFFECT: improved maneuverability. 11 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 497 692 (13) C2 (51) МПК B60G 17/015 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009112078/11, 01.04.2009 (24) Дата начала отсчета срока действия патента: 01.04.2009 (72) Автор(ы): ГОНЕЙМ Юссеф (US), ХЕЛЬД Файт (DE) (43) Дата публикации заявки: 10.10.2010 Бюл. № 28 2 4 9 7 6 9 2 (45) Опубликовано: 10.11.2013 Бюл. № 31 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры" режимом движения с высокой угловой скоростью рулевого колеса и режимом движения с низкой угловой скоростью рулевого колеса. Контроллер обеспечивает установку более высокой жесткости подвески в режиме с высокой угловой скоростью рулевого колеса, чем в режиме с низкой угловой скоростью рулевого колеса. Технический результат заключается в повышении маневренности транспортного средства. 10 з.п. ф-лы, 3 ил., 1 табл. R U 2 4 9 7 6 9 2 (54) АДАПТИВНОЕ УПРАВЛЕНИЕ ПОДВЕСКОЙ ТРАНСПОРТНОГО СРЕДСТВА Ñòð.: 1 ru C 2 C 2 (56) Список документов, цитированных в отчете о поиске: JP 58056907 A, 04.04.1983. WO 2006126342 A1, 30.11.2006. US 2004015279 A1, 22.01.2004. US 2005234620 A1, 20.10.2005. US 4830394 A, 16.05.1989. RU 2240930 C1, 27.11.2004. (57) Реферат: Изобретение относится к системе адаптивного управления подвеской ...

Controller for damping force in shock absorber of variable damping force type

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Control device for car suspension

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Suspension controller for vehicle

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Suspension apparatus

조타시에 있어서의 제어이득 설정자유도를 높임으로써 직진 주행시에 있어서의 차량의 승차감을 악화시키지 않고 조타시에 있어서의 롤을 충분히 억제할 수 있는 차량현가 장치의 제공. The provision of the vehicle suspension apparatus which can fully suppress the roll at the time of steering, without degrading the ride comfort of the vehicle at the time of a straight run by raising the control gain setting freedom degree at the time of steering. 각 쇼크 업쇼버 b의 감쇠특성을 스프링위 상하속도에 의거하는 바운스 레이트신호와, 좌, 우양 스프링위 상하 속도차에서 검출한 롤레이트신호, 롤각신호와, 타각신호 및 타각속도신호를 소정의 비율로 합성한 제어신호에 의하여 제어하는 감쇠특성 제어부 g를 갖는 제어수단 h와, 제어수단 h에 설치되고 각 신호의 합성비유을 조타상태에 따라서 가변 설정하는 합성비율 가변 설정부 j를 구비하고 있다. The bounce rate signal based on the up and down speed on the spring, the roll rate signal detected by the up and down speed difference on the left and right springs, the roll angle signal, the steering angle signal and the steering speed signal And a control means h having a damping characteristic control unit g controlled by the control signal synthesized by the control signal, and a synthesis ratio variable setting unit j, which is provided in the control means h and variably sets the synthesis ratio of each signal according to the steering state.

Vehicle suspension apparatus

차체측과 각 차륜측 사이에 개재되는 감쇄력 가변 특성의 차량 현가 장치이다. 감쇄력 특성 변경 수단(a)에 의해 신장측 및 수축측 감쇄력 특성을 복수 단계로 절환 가능한 동시에, 수축측에 대한 신장측 감쇄 계수비가 1.0 이하로 되는 특성의 절환이 가능한 완충기(b)와, 차량 거동 검출 수단(c)에서 검출된 차량 거동 검출 신호를 기초로 하여 각 완충기(b)의 감쇄력 특성을 가변 제어하는 통상시 제어 수단(d)을 갖는 감쇄력 특성 제어 수단(e)과, 감쇄력 특성 제어 수단(e)에 설치되고 제동 상태 검출 수단(f)에서 차량의 제동 상태가 검출된 때에는 완충기(b)의 감쇄력 특성 변경 수단(a)을 수축측에 대한 신장측 감쇄 계수비가 1.0 이하로 되는 특성으로 절환하는 제동시 보정 제어 수단(g)을 구비한다. 제동시에 발생하는 차량 거동을 기초로 한 접지 하중의 변동을 억제함으로써 제동력을 확보할 수 있다. A vehicle suspension apparatus having a variable damping force interposed between a vehicle body side and each wheel side. A shock absorber (b) capable of switching the extension-side and contraction-side damping force characteristics in a plurality of stages by the damping force characteristic changing means (a), and the switching of the characteristics such that the stretch-side attenuation coefficient ratio on the shrinkage side becomes 1.0 or less, and the vehicle behavior. Damping force characteristic control means (e) having normal time control means (d) which variably controls the damping force characteristic of each shock absorber (b) based on the vehicle behavior detection signal detected by the detecting means (c), and the damping force characteristic control means and the damping force characteristic changing means (a) of the shock absorber (b) when the braking state detecting means (f) detects the braking state of the vehicle so that the expansion-side damping coefficient ratio on the contraction side becomes 1.0 or less. Compensation control means (g) at the time of switching braking is provided. The braking force can be secured by suppressing the variation of the ground load based on the vehicle behavior generated during braking.

Apparatus and method for controlling the damping force characteristics of a vehicle shock absorber

차량 완충기들의 감쇠력을 제어하는 장치 및 방법에 있어서, 차량의 피치 비 또는 롤 비 중의 적어도 하나가 전륜들 상에 위치한 그리고 후방 우측 및 좌측 차륜들 중의 어느 하나에 위치한 차륜 속도 검출기들 중의 적어도 세 개의 출력 신호 들을 기초로 하여 유도된다.

Patent JPH0474209B2

Suspension system

내용 없음. No content.

ADJUSTABLE HYDRAULIC SHOCK ABSORBER

Un amortisseur hydraulique réglable possède un réglage de base et peut, en plus, être réglé par voie électromagnétique pour être plus mou ou plus dur. Pour le réglage supplémentaire, on utilise une armature d'électroaimant 11 qui coopère avec deux bobines 12 et 13 et est capable d'amener un tiroir de vanne 10 depuis une position normale (réglage de base) à l'une ou l'autre de deux positions. L'amortisseur est destiné à être utilisé dans les véhicules automobiles. An adjustable hydraulic shock absorber has a basic setting and can additionally be electromagnetically adjusted to be softer or harder. For further adjustment, an electromagnet armature 11 is used which cooperates with two coils 12 and 13 and is capable of bringing a valve spool 10 from a normal position (basic adjustment) to either of the two coils. two positions. The shock absorber is intended for use in motor vehicles.

Vehicle suspension control system

본 발명은 가변 감쇄력 특성을 제공하기 위해 차량의 탄성 및 비탄성 질량체 사이에 제공되어진 적어도 하나의 완충기를 제어해주는 현가 제어 시스템에 관한 것이다. 제어 시스템은 감지왼 조향각을 나타내는 전기 신호상에 중첩된 소음을 여과하기 위한 저역 통과 필터를 포함한다. 소음 제거 조향각 표시 힌호를 최적 감쇄력 특성을 제공하기 위해 감지된 자향 동작을 기초로 하여 완충기를 제어해주는 정상 제어 모드와 정상 제어 모드에서 제공된 것보다 더 큰 감쇄력 특성을 제공하기 위해 소음 제거 차량 조향각 표시 신호를 기초로 하여 완충기를 제어해주는 롤 제어 모드에서 작동 가능한 제어 유니트로 제공되어 진다. 제어 유니트는 소음 제거 조향각 표시 신호가 소정의 제1한계값을 초과할 때에 롤 제어 모드에서 작동한다.이 작동은 소음 제거 조향각 표시 신호가 그 피크값과 정비례하여 설정된 제2한계값 아래로 감소하고 나서 소정의 시간 후에 롤 제어 모드로부터 정상 제어 모드로 변화되어 진다.

Hydraulic damper for a motor vehicle

The damper comprises means (11, 12, 13, 14, 17) for controlling a flow rate of the damping liquid between one of the chambers (9) and an external reservoir (8). The liquid passes through a first passage (2, 2') providing a linear increase in pressure in the chamber (9) as a function of the speed of the piston. A computer selectively controls the opening of a second passage (3, 3') to provide a linear increase in pressure, of a shallower slope, above a certain pressure given by the computer, prevailing in the chamber (9). The computer then excites an actuator (17) which causes the opening of the passage (3, 3') by means of a distributor (12) and of a coupling (13, 14). Application to a damper setting up a double slope damping law.

IMPROVEMENT TO A SUSPENSION SYSTEM FOR A BICYCLE

La présente invention concerne un système de suspension d'une bicyclette du type comportant un châssis dit cadre (1), d'une fourche avant (6) portant l'axe du moyeu d'une roue avant directrice (7) et comportant un premier amortisseur dit amortisseur avant (8), d'un bras fixe ou d'un bras oscillant (16) articulé au cadre (1), portant l'axe du moyeu (19) d'une roue arrière motrice (20) et éventuellement un second amortisseur dit arrière (25) dont les extrémités sont solidaires respectivement du cadre (1) et du bras oscillant (16), le couple moteur étant transmis à la roue motrice (20) par une chaîne (21) s'étendant entre un pignon menant (14) solidaire du cadre et un pignon mené (22) solidaire de l'axe du moyeu (19) de la roue motrice (20), et d'au moins un capteur dit de choc (30) apte à déterminer le franchissement d'un obstacle par la roue directrice (7), ledit capteur (30) étant connecté à une unité de contrôle (28) pilotant l'amortisseur avant (8) en fonction du signal transmis par ledit capteur (30) ; ledit système est remarquable en ce qu'il comporte au moins des moyens de détection du pédalage dits capteur de pédalage (29) connectés à l'unité de contrôle (28) qui règle la commande de compression de l'amortisseur avant (8) et/ou arrière (25) en fonction du signal de présence du pédalage, d'un signal de vitesse de la fourche avant (6) et d'un signal d'accélération de l'extrémité inférieure de la fourche avant (6). The present invention relates to a suspension system of a bicycle of the type comprising a so-called frame (1), of a front fork (6) carrying the hub axle of a steering wheel (7) and comprising a first damper said front damper (8), a fixed arm or an oscillating arm (16) hinged to the frame (1), bearing the hub axle (19) of a rear drive wheel (20) and optionally a second rear damper (25) whose ends are secured respectively to the frame (1) and the oscillating arm (16), the ...

IMPROVEMENT TO A SUSPENSION SYSTEM FOR A BICYCLE

HYDRAULIC SHOCK ABSORBER WITH HOLLOW CONTROL ROD.

Amortisseur hydraulique comportant un passage unidirectionnel de phase de contraction (H, J) permettant l'écoulement du fluide d'amortissement dans la phase de contraction, un passage unidirectionnel de phase d'extension (D, E, F) permettant l'écoulement du fluide d'amortissement dans la phase d'extension et un élément de valve (34), sous forme d'une tige de commande creuse, qui a une position neutre dans laquelle les passages de phase de contraction et de phase d'extension sont ouverts, une première position déplacée dans laquelle le passage de phase d'extension est obturé et le passage de phase de contraction est ouvert, et une seconde position déplacée dans laquelle le passage de phase de contraction est obturé et le passage de phase d'extension est ouvert. Cet amortisseur hydraulique est destiné aux systèmes d'amortissement des véhicules automobiles. Hydraulic shock absorber comprising a unidirectional passage of the contraction phase (H, J) allowing the flow of the damping fluid in the contraction phase, a unidirectional passage of the extension phase (D, E, F) allowing the flow of the damping fluid in the extension phase and a valve member (34), in the form of a hollow control rod, which has a neutral position in which the passages for the contraction phase and the extension phase are open , a first displaced position in which the extension phase passage is closed and the contraction phase passage is open, and a second displaced position in which the contraction phase passage is closed and the extension phase passage is open. This hydraulic damper is intended for motor vehicle damping systems.

Patent JPH0346321B2

Method and device for adjusting the damping on a vehicle

Suspension controlling device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Suspension controller

내용 없음. No content.

Suspension control system for vehicles

A suspension control system for controlling a suspension having a shock absorber provided for a wheel of a vehicle includes damping force change rate detecting means for detecting a damping force change rate indicating a rate of change of a damping force of said shock absorber. The system also comprises damping force alteration means, coupled to said shock absorber and said dam ping force change rate detecting means, for determining whether or not said damping force change rate is outside a first range and for altering the setting of said damping force to a first level from a second level greater than said first level when it is determined that said dam ping force change rate is outside said first range. The system further comprises damping force restoration means, coupled to said damping force change rate detecting means, said damping force alteration means and said shock absorber, for determining whether or not said damping force change rate is continuously within a second range narrower than said first range during at least a predetermined period after said damping force alteration means alters the setting of the damping force from said second level to said first level and for restoring the setting of the damping force from said first level to said second level when it is determined that said damping force change rate is continuously within said second range. <IMAGE>

Suspension control apparatus

ABSTRACT Bumpy road driving state of a vehicle during driving is correctly sensed by computation using the output signal from a roll angular velocity sensor for detecting angular velocity about a roll axis of the vehicle and an output signal from a vehicle speed sensor, and the suspension control apparatus continues to control the damping force of the shock absorbers after the bumpy road driving has been finished, in order to enlarge the road contact area of the tire and improve the ride comfort and driving stability of the vehicle.

Hydraulic damper

Electronic controller for variable damping force liquid pressure buffer

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Hydraulic shock absorber with damping force control

Hydraulikstoßdämpfer mit Dämpfungskraftsteuerung, umfassend: einen Zylinder (2), in dem ein Hydraulikfluid eingeschlossen ist; einen Kolben (5), der verschiebbar in den Zylinder (2) eingepasst ist, den Innenraum des Zylinders (2) in eine obere (2A) und eine untere Zylinderkammer (2B) teilt und mit Hydraulikfluiddurchlässen (16, 17, 18) versehen ist, die eine Verbindung zwischen der oberen (2A) und der unteren Zylinderkammer (2B) herstellen und durch die das Hydraulikfluid als Antwort auf die Verschiebebewegung des Kolbens (5) strömen kann, wobei die Hydraulikfluiddurchlässe (16, 17, 18) zumindest einen Hydraulikfluiddurchlass (16, 17) der Expansionsseite sowie zumindest einen Hydraulikfluiddurchlass (16, 17) der Kompressionsseite umfassen; eine Kolbenstange (6), die mit einem ihrer Enden mit dem Kolben (5) verbunden ist, wobei sich das andere Ende der Kolbenstange (6) zur Außenseite des Zylinders (2) erstreckt; und ein vorsteuerbetätigtes Dämpfungskraftsteuerungsventil, das für die Hydraulikfluiddurchlässe (16, 17) der Expansionsseite und/oder die Hydraulikfluiddurchlässe (16, 17) der Kompressionsseite vorgesehen ist, um eine Dämpfungskraft zu erzeugen, indem die Strömung des Hydraulikfluids in den Hydraulikfluiddurchlässen (16, 17, 18) gesteuert wird; wobei das durch Vorsteuerung betätigte Dämpfungskraftsteuerungsventil Hauptdämpfungsventile (19, 20) aufweist, die in den Hydraulikfluiddurchlässen (16, 17) der Expansionsseite und/oder den Hydraulikfluiddurchlässen (16, 17) der Kompressionsseite vorgesehen sind, sowie ein einziges Vorsteuerventil (28) zum Steuern eines Vorsteuerdrucks der Hauptdämpfungsventile (19, 20), dadurch gekennzeichnet, dass die Hauptdämpfungsventile (19, 20) sich voneinander in den Ventilöffnungscharakteristika während eines und desselben Expansions- oder Kompressionshubs der Kolbenstange unterscheiden und dabei geeignet sind, sich beim ... A damping force control hydraulic shock absorber comprising: a cylinder (2) in which a hydraulic fluid ...

METHOD FOR CONTROLLING VEHICLE SHOCK ABSORBERS WHEN PASSING A DOS OF ANE

Le procédé de pilotage d'amortisseurs de véhicule au passage d'un dos d'âne, comprend des étapes consistant à : - positionner (105) un courant électrique (iav) de pilotage d'amortisseur avant sur une première valeur de courant (iz2) maximale à détection (103) d'un rampant montant de dos d'âne pour obtenir un coefficient d'amortissement élevé sur les roues avant ; - positionner (111) le courant électrique (iav) de pilotage d'amortisseur avant sur une deuxième valeur de courant (iz3) inférieure à la première valeur de courant (iz2) dès que le véhicule (10) a parcouru (108) après détection (103) du rampant montant, une première distance (X1) représentative d'une longueur du rampant montant, pour obtenir un coefficient d'amortissement moins élevé sur les roues avant. The method of controlling vehicle dampers at the passage of a speed bump includes steps of: - positioning (105) a front shock steering electric power (iav) on a first current value (iz2 ) maximum detection (103) of a rampant amount of humps to obtain a high damping coefficient on the front wheels; positioning (111) the front damper control electric current (iav) at a second current value (iz3) lower than the first current value (iz2) as soon as the vehicle (10) has traveled (108) after detection (103) of the rising ramp, a first distance (X1) representative of a length of the rising ramp, to obtain a lower damping coefficient on the front wheels.

Suspension controller in vehicles

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Controller for damping force generator

(57)【要約】 【課題】 スカイフック理論にしたがってダンパ装置の 減衰係数を制御する制御装置において、ダンパ装置の大 きな伸び及び縮みによるストッパ当りを避けて、車両の 乗り心地を良好に保つとともに車体の振動を抑制する。 【解決手段】 車体１１の上下方向の絶対速度ｘ’を検 出するとともに、車体１１のロアアーム１３に対する上 下方向の相対速度ｙ’を検出して、前記検出された両速 度ｘ’，ｙ’の速度比ｘ’／ｙ’に基づいてスカイフッ ク理論にしたがった目標減衰係数Ｃ*を決定し、ダンパ 装置１５の減衰係数を目標減衰係数Ｃ*に制御する。車 体１１の振動が大きい場合、ダンパ装置１５の伸び量及 び縮み量が多くて相対変位量ｙが所定の範囲内から外れ た場合には、前記目標減衰係数Ｃ*の下限値を所定制限 値以上に制限し、車体１１のロアアーム１３に対する自 由な変位を抑制して、ダンパ装置１５の伸び及び縮みに よるストッパ当りを避ける。

HYDRAULIC SHOCK ABSORBER ADJUSTABLE TO THE CUSHIONING EFFORT

Damping force adjusting hydraulic shock absorber

A damping force adjusting hydraulic shock absorber comprises a damping force regulating valve (12) constructed of a plurality of valve bodies (42, 43) for opening and closing one of passages (13) connecting two chambers (4, 5, Fig 1). A spring member (46, 47) is provided on each valve body for biasing the valve body onto a valve seat (40) provided in the passage (13) and a plunger (52) is mounted on the valve bodies. A solenoid (53) into which the plunger is inserted moves the plunger by means of a force corresponding to the value of a current to successively operate the valve bodies. The passage is thus adjusted by controlling a current value, a damping force is then generated by damping force generating mechanisms (18, 26, Fig.1) for controlling a flow of hydraulic fluid in the passages (13, and 14, 15, Fig.1) and so obtaining a plurality of damping force characteristics. <IMAGE>

Suspension control apparatus

Vehicle shock absorber system and accessory thereof

A vehicle shock absorber system configured with more than one pressure cylinder that provides advantageous damping characteristics for different loads. In accordance with one aspect of the present application, there is provided a vehicle shock absorber system having a primary pressure cylinder including upper and lower primary chambers separated by a primary piston head, an auxiliary pressure cylinder including upper and lower auxiliary chambers separated by an auxiliary piston head, a first connection conduit connecting the upper primary chamber and the upper auxiliary chamber, a second connection conduit connecting the lower primary chamber and the lower auxiliary chamber, and a cylinder valve arrangement configured to regulate fluid flow to the auxiliary pressure cylinder.

Vehicle suspension system

Automotive suspension system with variable suspension characteristics and variable damping force shock absorber therefor

An automotive suspension system employs a pressure sensor means (60, 90) designed for monitoring fluid pressure in a fluid chamber of shock absorber to be compressed during piston (4) bounding stroke. Variable suspension characteristics to vary suspension mode between HARD mode and SOFT mode so that suspension mode is normally set in SOFT mode and switched into HARD mode when the peak value of variation rate of the output of the sensor means is detected. The suspension system is provided a deadband for maintaining the suspension mode unchanged even when the peak of variation rate is detected.

Suspension device

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Patent JPH0446769B2

Apparatus and method for controlling damping force characteristics of automobile shock absorber

본 발명은 따른 차량 완충기에 대한 감쇠력 특성을 제어하기 위한 제어 장치 및 제어 방법에 있어서, 차량의 제동 거리가 짧아지게 하여 차량의 제동 성능을 향상시키기 위하여 차량 제동 상태가 발생한 때에 제어 신호(V)의 정정 제어 신호 성분을 발생시켜 각 완충기에 제공한다. 정정 제어 신호 성분은 각 차륜의 슬립률 중 적어도 양에서 음으로 반전된 슬립률 값을 기초로 하여 발생되는데, 상기 슬립률(W)은 차체 속도로부터 대응하는 차륜 속도(W v ) (W VFR , W VFL , W VRS )를 감하여서 도출된다. 제어 신호의 기본 제어 신호 성분은 스프링 질량체 수직 속도 신호에 기초하여 발생되어 제공된다.

Damping force adjusting hydraulic shock absorber

A hydraulic shock absorber includes a damping force regulating valve constructed of a plurality of valve bodies for opening and closing one of passages connecting two chambers, a spring member provided on each valve body for biasing the valve body onto a valve seat, a plunger mounted on the valve bodies, and a solenoid into which the plunger extends for moving the plunger under a force corresponding to the value of the current fed to the solenoid to successively move the valve bodies. The passage is able to be opened and closed by controlling the current value so that a damping force is generated by controlling a flow of the hydraulic fluid in the passages, thus allowing the shock absorber to exhibit a plurality of damping force characteristics.

Suspension system for vehicles

Federungssystem für Fahrzeuge, insbesondere für nicht spurgebundene Kraftfahrzeuge, mit zwischen Aufbau (1) und Rädern (2) des Fahrzeuges angeordneten Federaggregaten, welche zumindest teilweise eine passive Federanordnung sowie eine dazu in Reihe geschaltete aktiv steuerbare Höhenverstellvorrichtung und eine parallel zur Federanordnung arbeitende Dämpferanordnung aufweisen, dadurch gekennzeichnet, dass die Dämpferanordnung bezüglich ihrer Druck- und/oder Zugstufe steuerbar und bei und/oder vor Betätigung der jeweils zugeordneten Höhenverstellvorrichtung durch Veränderung der Differenz zwischen Zug- und Druckstufe der Dämpfervorrichtung eine den Aufbau in Verstellrichtung der Höhenverstellvorrichtung beaufschlagende Zusatzkraft und/oder eine Zusatzhemmung einer der Verstellrichtung der Höhenverstellvorrichtung entgegengesetzten Aufbaubewegung erzeugbar sind. Suspension system for vehicles, in particular for non-track-bound motor vehicles, with spring assemblies arranged between the body (1) and wheels (2), which at least partially have a passive spring arrangement and an actively controllable height adjustment device connected in series and a damper arrangement operating parallel to the spring arrangement, characterized in that the damper assembly controllable with respect to their pressure and / or rebound and at and / or before actuation of the respective associated height adjustment by changing the difference between tension and compression of the damper device a structure in the adjustment of the height adjustment acted upon additional force and / or a Additional inhibition of the adjustment of the height adjustment device opposite body movement can be generated.

Suspension system

Damping force control device

VEHICLE SUSPENSION

Suspension controller

Ground clearance adjuster type rolling control for vehicle

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Vehicle suspension with variable damping characteristics w.r.t. vehicle conditions - has motion sensors on suspension mountings and with stepping motor to vary damping characteristics

Each suspension unit is fitted with a damper with variable damping characteristics controlled by an actuator either in steps or continuously. Each damper has a motion sensor to determine the acceleration of the damper in either direction, with the sensor mounted to monitor the sprung mass movement. The rate at which the characteristics are altered w.r.t. vehicle dynamics, with a slow rate of change for low accelerations. The CPU controlling system has inputs from all the sensors including vehicle speed and steering settings. To counter roll and pitch certain dampers are controlled with asymmetric damping characteristics. The CPU provides the drive signals for the actuators. ADVANTAGE - Separate control for each damper, improved comfort and stability.

Roll control device for vehicle

COMPOSITE CONTROL SYSTEM FOR MOTOR VEHICLES.

Motor vehicle suspension with variable hardness dampers - has vertical motion sensors on each damper and with programmed control to minimise bouncing

Each suspension unit has a variable hardness damper linked to a central control (4). Vertical motion sensors on the damper, sensors on the engine, and on the steering, provide the additional data for the active control. The system detects bouncing and reduces the hardness of the suspension dampers accordingly to ensure a more comfortable ride. The hardness is varied by remote control via the control unit. The control regulates the bouncing, pitching and rolling of the suspension w.r.t. the speed of the vehicle and the steering setting. The control provides a correction signal for bouncing, to overlay the overall control of the dampers. The control unit (4) has an interface circuit, CPU and a drive circuit. The interface circuit has for filter circuits, each coupled to one of the vertical G sensors (1). ADVANTAGE - Improved comfort, automatic suspension control.

Controllable hydraulic vibration damper for vehicle bodywork - has damping piston at piston rod in cylinder which has valve discs for variable passage openings and by=pass controlled by electromagnet

The bypass for tension and compression operation of the vibration damper is controlled by the electromagnet (5) across a valve slide (6), so that the bypass flow results thorugh the throttle valve body, with the spring (32) pressing the valve slider downwards, and the opening (29) frees the pressure stage bypass duct (21). The valve slider (6) is designed as a tube, and the piston rod (2) or a piston rod extension (3) is arranged longitudinally movable inside a longitudinal bore (3). The switching position with no current supplied to the electromagnet (5), effects the shock absorber characteristic hard extension stage, soft compression stage. With current supplied to electromagnet (5), corresp. extension stage is soft and compression stage is hard. ADVANTAGE - Developed as small unit, which ensures that large flow cross section is attained for bypass.

A suspension system for a motor vehicle

Adaptive control system for operating adjustable automotive suspension units

Abstract A control system for governing multiple operating mode adjustable suspension units in an automotive vehicle with an adjustment mechanism for receiving an adjustment control signal for placing the suspension units in any of the multiple adjustment modes, and a fault warning mechanism for detecting an inability of the adjustment mechanism to adjust one or more of the suspension units and for generating a fault warning signal in response to such detection. The diagnostic mechanism responsive to such fault warning signal is operatively connected with the adjustment mechanism for determining the extent which the ability to adjust the suspension units has been impaired and a mode selection mechanism operatively connected with the diagnostic mechanism for deciding into which of the multiple operating modes the suspension units should be directed based upon the determination of the diagnostic mechanism, with the mode selection mechanism further including a mechanism for generating an adjustment control signal corresponding to the operating modes and for communicating such signal to the adjustment mechanism. l290K

Pitching-suppressive control system and method for an automotive vehicle suspension

A suspension system for a motor vehicle

The system comprises a spring between the vehicle body (13) and each wheel (15), a shock absorber (12) associated with each spring and which is switchable electromagnetically between soft and stiff settings, one or more accelerometers (16) sensing vertical acceleration of the vehicle body (13), an electronic filter (40, 41) for filtering the signals from the accelerometer (16) to select a band width of frequencies, either side of the primary ride frequency of the vehicle, and control means (18) for switching the shock absorbers between the soft and stiff settings whenever a pre-determined level of vertical motion within this band width is exceeded either in the bump or rebound directions.

Vehicle suspension system and method

A control system is operatively associated with a suspension system of a vehicle. The associated suspension system includes an associated fluid spring operating at an associated fluid pressure and an associated variable-rate damper having an associated electronically-variable damping rate. The control system includes a pressure sensor operative to generate a pressure sensor signal indicative of the associated fluid pressure of the associated fluid spring, and a controller in communication with the pressure sensor and the associated variable-rate damper. The controller is operative to receive the pressure sensor signal and generate a damper adjustment signal based at least partially on the pressure sensor signal for adjusting the associated electronically-variable damping rate of the associated variable-rate damper. A vehicle suspension system includes such a control system, and a method of controlling a suspension system of a vehicle is also included.

System and method for controlling damping force characteristic of shock absorber applicable to automotive suspension

Methods and apparatus for suspension set up

A method and apparatus are disclosed that assist a user in performing proper setup of a vehicle suspension. A user may utilize a device equipped with an image sensor to assist the user in proper setup of a vehicle suspension. The device executes an application that prompts the user for input and instructs the user to perform a number of steps for adjusting the suspension components. In one embodiment, the application does not communicate with sensors on the vehicle. In another embodiment, the application may communicate with various sensors located on the vehicle to provide feedback to the device during the setup routine. In one embodiment, the device may analyze a digital image of a suspension component to provide feedback about a physical characteristic of the component.

Suspension controller

내용 없음. No content.

Active vehicle suspension unit

A hydraulic shock absorber includes a generally vertical cylinder receiving therein hydraulic liquid, a piston working in the cyliner and partioning the interior thereof into two liquid chambers, an upper and a lower chamber. An improved damping control is achieved by a circuit (10) forming a connection between the two liquid chambers (1, 2), a further circuit (9) connecting the reservoir (3) to the lower liquid chamber (2), each of the two circuits (9, 10) including a controllable first check valve (C1) and second check valve (C2), respectively, that can each take two states of operation under the action of a control means (20), in a first state locking the valve in a closed position cutting off the forward flow (E1 and E2 repectively) through the check valve (C1 and C2 respectively), and in a second state allowing a free forward flow (E1 and E2 respectively) through the check valve (C1 and C2 respectively), whereas the check valve (C1, C2) in the first state as well as in the second state block the reverse flow (D1 and D2 respectively) of both circuits (9, 10).

Adjustable damper for a motor vehicle

The method involves continuously adjusting the damper's (8a,b) force characteristic in response to input control signals by generating signals representing damper movement and the vertical speed of the sprung wheel (4a,b) mass and computing a desired damping force and desired current for adjusting the damping force characteristic. The change in the desired current and the change in the desired damping force are limited over a period. An Independent claim is also included for an adjustable damper for a motor vehicle.

Vehicle suspension system