EP3532319A1 - Procédé de contrôle de l'inclinaison d'un véhicule inclinable par action sur un dispositif de suspension hydropneumatique - Google Patents
Procédé de contrôle de l'inclinaison d'un véhicule inclinable par action sur un dispositif de suspension hydropneumatiqueInfo
- Publication number
- EP3532319A1 EP3532319A1 EP17794361.0A EP17794361A EP3532319A1 EP 3532319 A1 EP3532319 A1 EP 3532319A1 EP 17794361 A EP17794361 A EP 17794361A EP 3532319 A1 EP3532319 A1 EP 3532319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inclination
- current
- amg
- amd
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/005—Suspension locking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0162—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/06—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
- B60G21/073—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/10—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces not permanently interconnected, e.g. operative only on acceleration, only on deceleration or only at off-straight position of steering
- B60G21/106—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces not permanently interconnected, e.g. operative only on acceleration, only on deceleration or only at off-straight position of steering transversally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/314—The spring being a pneumatic spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/46—Means for locking the suspension
- B60G2204/4605—Means for locking the suspension hydraulically, e.g. interrupting communication between the chambers of a hydraulic cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/82—Interactive suspensions; arrangement affecting more than one suspension unit left and right unit on same axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/83—Type of interconnection
- B60G2204/8304—Type of interconnection using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/45—Rolling frame vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/05—Attitude
- B60G2400/051—Angle
- B60G2400/0511—Roll angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/05—Attitude
- B60G2400/052—Angular rate
- B60G2400/0523—Yaw rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/20—Speed
- B60G2400/204—Vehicle speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/01—Attitude or posture control
- B60G2800/012—Rolling condition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/24—Steering, cornering
Definitions
- the invention relates to hydropneumatic suspension devices which are intended to equip motor vehicles reclining in bends.
- the term "tilting motor vehicle” means a land vehicle, with or without bodywork, having at least one driving machine allowing it to move, being able to tilt in the turns and comprising either a train comprising a right wheel and a left wheel, and another train having a single wheel, two trains each having a right wheel and a left wheel, Therefore, it may be a car with three or four wheels, or a motorcycle with three wheels constituting a tricycle (such as for example a three-wheeled scooter or a "trike"), or a four-wheel motorcycle constituting a quadricycle (such as for example a "quad”), or any other four-wheeled vehicle and narrow rear axle with a possibility of steep inclination in curve.
- a tricycle such as for example a three-wheeled scooter or a "trike
- a quadricycle such as for example a "quad”
- Some tilting motor vehicles are equipped with means for blocking their roll (or inclination).
- these roll locking means are arranged to act on a hydraulic circuit connecting between right and left dampers respectively coupled to the right and left wheels of a train.
- This hydraulic circuit may, for example, comprise a duct interconnecting the compression chambers of the right and left dampers and in which circulates a fluid (such as for example oil), a solenoid valve implanted in the middle of the duct and communicating with a central accumulator.
- the latter comprises a chamber separated by a movable membrane in two subparts, one receiving the oil from the conduit and the other containing a gas under high pressure.
- This central accumulator defines a central damper when the vehicle circulates and a roll lock latch (or "roll lock") when the solenoid valve is placed in a closed state.
- This type of roll lock can only be used when stopped in an all-or-nothing mode, by actuation by the driver of a control member located on the handlebar. Indeed, the two wheels of a train being not independent and being managed by a single central damper, when the roll lock function is activated there is no suspension at all since the closure valve is located before the suspension, which makes the vehicle very uncomfortable and compromises its stability at low speed.
- the invention is therefore particularly intended to improve the situation.
- this current speed if this current speed is lower than a first threshold, it acts on a hydraulic circuit, connecting the right and left dampers between them, so that it blocks them in their respective current states,
- the method according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- the hydraulic circuit also comprises a pump communicating with each of the dampers, it is possible to act on this pump so that it transfers a selected quantity of fluid contained in the damper, located on the opposite side to the current inclination, in the other damper, located on the side of the inclination in progress, in order to cause a reduction chosen inclination;
- the vehicle comprises two trains, front and rear, comprising right and left wheels and each associated with a hydropneumatic suspension device, it is possible to determine the front and rear inclinations during the vehicle, and then it is possible to determine a third difference between these forward and backward inclinations in progress, and if this third difference is greater than a third threshold can be generated an alarm for alerting a driver of the vehicle, while if the third difference is below the third threshold can be determined if the current speed is lower than the first threshold;
- each hydraulic circuit comprises a pump communicating with each of the associated dampers, and when a load on a part rear of the vehicle has changed the attitude of the latter, it can act on the pump associated with the rear axle so that it transfers a selected amount of fluid contained in a damper, located at the rear of the side opposite the inclination current, in the other damper, located at the rear side of the current tilt, to cause a selected correction of the attitude on the rear train.
- the invention also proposes a hydropneumatic suspension device, intended to equip a tilting motor vehicle having at least one train comprising right and left wheels, and comprising right and left dampers respectively coupled to the right and left wheels.
- - Clean control means when a current speed of the vehicle is less than a first threshold, to act on the hydraulic circuit so that it blocks the right and left dampers in their current states respective, and when the current speed is greater than the first threshold, to determine if a first difference between the current inclination and a necessary inclination, function at least of the current speed and a slope of the ground that supports the vehicle , is greater than a second threshold, and if so to act on the hydraulic circuit so that it prevents one of the right and left dampers, located on the side of the inclination in progress, to reach a corresponding chosen state at a selected inclination greater than or equal to the current inclination.
- its hydraulic circuit may comprise first and second solenoid valves respectively associated with first and second non-return means allowing fluid flows in opposite directions, and its control means may be arranged to place the first and second solenoid valves in respective states selected from a group including an open state, a partially open state, and a closed state.
- the invention also proposes a tilting motor vehicle comprising at least one train comprising right and left wheels and at least one hydropneumatic suspension device of the type shown above and coupled to this train.
- Such a vehicle may, for example, also include another train comprising a single wheel, to form a tricycle (such as for example a three-wheeled scooter or a "trike"). But it could also include two sets of wheels right and left, to form a quadricycle (as for example a "quad").
- FIG. 1 schematically and functionally illustrates, in a view from above, an example of a four-wheeled motor vehicle equipped with two embodiments of a hydropneumatic suspension device according to the invention
- FIG. 2 schematically and functionally illustrates, in a vertical and transverse sectional view, a front part of the vehicle of FIG. 1 with the hydropneumatic suspension device of the nose gear placed in a state adapted to low inclinations, and
- FIG. 3 schematically illustrates an example of an algorithm implementing a method for controlling the inclination according to the invention within a vehicle of the type of that illustrated in FIGS. 1 and 2.
- the object of the invention is notably to propose a method for controlling the inclination of a tilting motor vehicle V having at least one train Tj comprising RD and left-hand RG wheels and at least one hydropneumatic suspension device DSj.
- the tilting motor vehicle V is a four-wheeled car and comprising a body.
- the invention is not limited to this type of tilting motor vehicle. It concerns indeed any type of land vehicle, with or without bodywork, having at least one driving machine allowing it to move, being able to tilt in the turns and comprising either a train comprising a right wheel and a left wheel, and another train comprising a single wheel, two trains each comprising a right wheel and a left wheel. Therefore, it could be a three- or four-wheeled car, or a three-wheeled motorcycle making up a tricycle (such as a three-wheeled scooter or a trike), or a motorcycle.
- four wheels constituting a quadricycle such as a "quad”
- the tilting motor vehicle V comprises only a driving machine allowing it to move.
- This driving machine is for example a heat engine.
- a tilting motor vehicle V may comprise at least one heat engine and / or at least one electric machine.
- the vehicle V could comprise a front axle comprising a right wheel and a left wheel and a rear axle comprising a single wheel or a rear axle comprising a right wheel and a left wheel and a front axle comprising a single wheel.
- Each train Tj of the vehicle V is also equipped with a hydropneumatic suspension device DSj according to the invention, coupled to its right wheels RD and left RG. It will be noted that when the vehicle V comprises only one two-wheeled train, only this train is associated with a hydropneumatic suspension device DSj according to the invention.
- a hydropneumatic suspension device DSj comprises at least one right-hand damper AMD, a left-hand damper AMG, and a hydraulic circuit controlled by control means MCTj.
- the right damper AMD comprises a lower end coupled to the right wheel RD.
- the left damper AMG comprises a lower end coupled to the left wheel RG.
- Each lower end is for example the end portion of the axis of a piston, called cylinder rod.
- These dampers right AMD and left AMG are also interconnected by the hydraulic circuit. They are for example arranged in the form of cylinders each comprising an upper chamber of variable volume communicating with the hydraulic circuit.
- the hydraulic circuit may comprise at least a first solenoid valve EV1 associated with a first non-return means MA1 allowing the circulation of a fluid (such as, for example, oil ) in a first direction, and a second solenoid valve EV2 associated with a second non-return means MA2 allowing the circulation of the same fluid in a second direction opposite to the first direction.
- a fluid such as, for example, oil
- the first direction goes from the AMG left shock absorber to the right AMD shock absorber, and so the second direction goes from the right AMD shock absorber to the left AMG shock absorber.
- the first solenoid valve EV1 is coupled to the first anti-return means MA1 via a sub-conduit and communicates via another sub-conduit with a straight portion of a main duct CH which also communicates with the upper chamber of the right damper AMD (dedicated to oil).
- the first non-return means MA1 communicates via another sub-duct with a left part of the main duct CH which also communicates with the upper chamber of the left damper AMG (dedicated to the oil).
- the second solenoid valve EV2 is coupled to the second non-return means MA2 via a sub-conduit and communicates via another sub-conduit with the right portion of the main conduit CH.
- the second non-return means MA2 communicates via another sub-duct with the left part of the main duct CH.
- first EV1 and second EV2 solenoid valves can be placed in at least three states: a (totally) open state in which they let all the fluid passing on their input without loss of flow, and a state (totally) closed in which they prohibit any passage of the fluid arriving at their inlet, and a partially open state in which they let part of the fluid arriving at their inlet with a restriction of flow and a pressure drop.
- a (totally) open state in which they let all the fluid passing on their input without loss of flow
- a state (totally) closed in which they prohibit any passage of the fluid arriving at their inlet
- a partially open state in which they let part of the fluid arriving at their inlet with a restriction of flow and a pressure drop.
- they may, for example, be of the so-called "proportional" type, and may therefore take a plurality of different partially open states, between the closed state and the open state, depending on a voltage of control defined by the MCTj control means.
- the default state of the first EV1 and second EV2 solenoid valves is the (fully) open state. But in a variant the default state of the first EV1 and second EV2 solenoid valves could be the (totally) closed state.
- the first EV1 and second EV2 electrovalves, the first MA1 and second MA2 antiretour means, and the various sub-ducts may be housed in a hydraulic box BH which is coupled to the control means MCTj.
- first MA1 and second MA2 non-return means can be check valves.
- the hydropneumatic suspension device DSj may also comprise a right accumulator ACD, a left accumulator ACG, and third EV3 and fourth EV4 solenoid valves controlled by MCTj control means.
- the ACD right accumulator communicates with the compression chamber of the AMD right shock via the third solenoid valve EV3.
- the left accumulator AMG communicates with the compression chamber of the left shock absorber AMG via the fourth solenoid valve EV4.
- the third solenoid valve EV3 is responsible for controlling the access of the fluid to the right accumulator ACD according to instructions defined by the control means MCTj.
- the fourth solenoid valve EV4 is responsible for controlling access to the left battery ACG according to instructions defined by the control means MCTj.
- these third EV3 and fourth EV4 solenoid valves can be placed in at least two states: a (totally) open state in which they let all the fluid passing on their input without loss of flow, and a state (totally) closed in which they prohibit any passage of the fluid arriving on their entry.
- control means MCTj associated with the hydraulic circuits of the two trains Tj are installed in the same computer CS of the vehicle V, for example responsible for the supervision of several members. But this is not obligatory. Indeed, they could be part of two different computers possibly belonging respectively to the two devices DS1 and DS2. Furthermore, these control means MCTj can be made in the form of software modules (or computer (or “software”)), or a combination of electronic circuits (or “hardware”) and software modules.
- the control means MCTj associated with the hydraulic circuit of a train Tj, are arranged to determine the states in which the solenoid valves (in particular EV1 and EV2) of this hydraulic circuit must be placed as a function, at least, of the speed in progress.
- v v and the current inclination Im of the vehicle V are either an average inclination determined from the current inclinations Ij respective of the front and rear portions of the vehicle V, when the latter (V) comprises two trains Tj (having two wheels), the current inclination Ij of the part of the vehicle V which comprises the only two-wheeled train.
- each inclination is defined relative to the vertical direction of the vehicle V which is perpendicular to the ground which supports the vehicle V (which can be locally inclined).
- the invention proposes in particular to implement in the vehicle V a method for controlling the inclination of the latter (V).
- control method can be done by means of a hydropneumatic suspension device DSj.
- the (control) method according to the invention comprises a step which is performed each time the vehicle parameters V (speed (s) in progress and inclination (s) in progress Ij, and possibly yaw rate in progress vl ) are determined by sensors embedded in the vehicle V. These sensors are for example selected from rotation sensors, angular position sensors, accelerometers, gyrometers and magnetometers.
- the current speed v v can be determined by any means known to those skilled in the art, and in particular with one or more speed sensors.
- each wheel may be associated with a speed sensor and the current speed v v can be determined from the rotational speeds of the wheels.
- the control means MCTj can choose as current speed v v the second fastest rotation speed (this makes it possible to ignore the rotational speed of a wheel which is subject to a loss of adhesion or partial blockage).
- the current inclination Im can be determined by any means known to those skilled in the art, and in particular with one or more inclinometers.
- the control means MCTj can determine the current (average) inclination Im of the vehicle V from the current inclination 11 of the front part of the vehicle. vehicle V and the current inclination 12 of the rear part of the vehicle V.
- the process step continues with a test on the current speed v v . If this current speed v v is lower than a first threshold s1, (control means MCTj) agi (ssen) t on the hydraulic circuit, associated with the train Tj considered, to block AMD right dampers and left AMG hydropneumatic suspension device DSj in their respective current states.
- current state is used herein to mean the state in which an AMD or AMG right shock absorber of a train Tj is placed at the instant in question, this state being defined by the current position of the piston.
- the action is performed by means of a first command determined by the control means MCTj and intended for the first solenoid valve EV1 and a second control determined by the control means MCTj and for the second solenoid valve EV2 (in the presence of third EV3 and fourth EV4 solenoid valves, commands can be also and possibly determined for the latter (EV3 and EV4) as needed).
- this first threshold s1 may optionally be chosen according to the current will of the driver, and more specifically the level of acceleration requested by the driver during a start or the deceleration level requested by the driver when braking.
- the control means MCTj determines whether a first difference e1 between the current inclination Im and a necessary inclination In, function at least the speed in progress v v and the inclination of the ground which supports the vehicle V, is greater than a second threshold s2.
- the necessary inclination In can be determined by the control means MCTj as a function also of the yaw rate in progress v1. It will be understood that this option requires the vehicle V to comprise one or more sensors making measurements from which the current yaw rate v1 can be determined.
- the control means MCTj do not intervene and therefore the dampers AMD and AMG of the train Tj are free (c). that is, their respective states are not constrained by MCTj).
- the control means MCTj acts (ssen) t on the hydraulic circuit associated with the train Tj considered, so that it prevents one of AMD right and left AMG dampers, located on the side of the current incline Im, to reach a chosen state that corresponds to a selected inclination greater than or equal to the inclination in course Im (be the> Im).
- the action is performed by means of a first command determined by the control means MCTj and intended for the first solenoid valve EV1 or a second command determined by the control means MCTj and for the second solenoid valve EV2.
- the solenoid valve EV1 or EV2 which is concerned with the control is the one that controls the access to the damper chamber located on the side of the current inclination Im (and therefore on the side of the fall). In other words, we will close the solenoid valve which (in case of opening) allow an increase of the first inclination difference e1, but we do not touch the state of the other solenoid valve to allow a return equilibrium.
- the selected state is the current state of the damper which is located on the side of the current inclination. im.
- the chosen inclination is strictly greater than the current inclination Im (ie> Im)
- the selected state is different from the current state of the damper which is located on the side of the current inclination. im. In fact, it corresponds to a state in which the damper concerned may be a little more compressed than it is at the moment considered.
- the roll In normal driving without risk of falling, the roll remains free, including in the case of hyper-sporty driving with skidding of the rear and / or counter-braking.
- the control means MCTj can act on the circuit hydraulic train Tj concerned that it gradually prevents the damper AMD or AMG which is located on the side of the current incline Im to reach the selected state (corresponding to the).
- the action is performed by means of first progressive commands determined successively by the control means MCTj and intended for the first solenoid valve EV1 or second progressive commands determined successively by the control means MCTj and for the second solenoid valve EV2.
- the solenoid valve EV1 or EV2 which is concerned by these progressive controls is the one that controls access to the damper chamber located on the side of the current inclination Im (and therefore on the side of the fall ).
- control means MCTj for example, to act on the hydraulic circuit of the train Tj concerned so that it gradually prevents the AMD or AMG damper which is situated on the side the current inclination Im to reach the chosen state in a time interval which is a function of the second difference e2 between the first difference e1 and the second threshold s2.
- this time interval is even larger than the second difference e2 is small.
- speed or force
- control means MCTj may, for example, decide to immediately (or suddenly) prevent the damper concerned from taking a state corresponding to an inclination larger than the current tilt Im which corresponds to its current state.
- the control means MCTj can, for example, act on the hydraulic circuit of the train Tj concerned to induce a progressive release of this AMD or AMG damper.
- the action is performed by means of a first command determined by the control means MCTj and intended for the first solenoid valve EV1 or a second command determined by the control means MCTj and for the second solenoid valve EV2.
- This option is intended to prevent the vehicle V is recovering too quickly, which could be dangerous (especially in a corner or in case of loss of grip on a train Tj).
- each hydropneumatic suspension device DSj may advantageously comprise a PF pump. communicating (via conduits or pipes) with each AMD and AMG dampers, and more precisely with their compression chamber, and controlled by the associated MCTj control means.
- This PF pump is for example electric.
- this pump PF is associated with two additional solenoid valves not shown and controlled by commands determined by the control means MCTj.
- the control means MCTj may, for example, act on the associated pump PF so that it transfers a selected quantity of fluid contained in the AMD or AMG damper, which is located on the opposite side to the current tilt Im, in the other damper AMG or AMD, which is located on the side of the current tilt Im, in order to cause a chosen reduction of this current tilt Im. It will be understood that by transferring fluid from the damper, the state of which is the least compressed, to the other damper, whose state is the most compressed, the compression of the latter damper is reduced and therefore the part of the vehicle V which includes its train Tj. The action is carried out by means of a pump control determined by the control means MCTj and intended for the pump PF concerned and commands for the additional solenoid valves associated with this pump PF, also determined by the control means MCTj.
- the control means MCTj can, by For example, record a fault, but they do not intervene on the hydraulic circuit and therefore the AMD and AMG dampers of the train Tj are free (that is to say that their respective states are not constrained by MCTj).
- the control means MCTj determine whether the current speed v v is lower than the first threshold s1, as explained above.
- vehicle V may, as illustrated without limitation in FIGS. 1 and 2, comprise the T1 and T2 front wheels (two-wheeled RD and RG) each associated with a hydropneumatic suspension device DSj whose hydraulic circuit comprises the PF pump.
- the control means MCTj can, for example, act on the associated pump PF to the rear axle T2 so that it transfers a selected quantity of fluid contained in the AMD or AMG damper, which is located at the rear of the opposite side to the current inclination Im, in the other damper AMG or AMD , which is located at the rear of the side of the current inclination Im, in order to cause a selected correction of the attitude on the rear train T2.
- the action is carried out by means of a pump control determined by the control means MCTj and intended for the pump PF concerned and commands for the additional solenoid valves associated with this pump PF, also determined by the control means MCTj.
- FIG. 3 schematically illustrates an example of an algorithm implementing a control method according to the invention within the vehicle V of FIGS. 1 and 2, and thus comprising a front axle T1 and a rear axle T2 each comprising right RD and left RG wheels and each associated with a hydropneumatic suspension device DSj.
- the algorithm starts with a sub-step 10 in which one (for example MCT1) determines the current speed v v of the vehicle V and the current inclination Im of the vehicle V from the current inclination 11 of its part before and the current inclination 12 of its rear part, as well as possibly the yaw rate in progress vl.
- one for example MCT1 determines the current speed v v of the vehicle V and the current inclination Im of the vehicle V from the current inclination 11 of its part before and the current inclination 12 of its rear part, as well as possibly the yaw rate in progress vl.
- one (MCT1) triggers in a sub-step 30 the generation of an alarm intended to alert the driver of the vehicle V.
- one (MCT1) performs in a sub-step 40 a test to determine if the current speed v v is greater than the first threshold s1.
- one (MCT1) acts in a substep 50 on the hydraulic circuit, associated with the front axle T1, so that it blocks the dampers right AMD and left AMG suspension device hydropneumatic DS1 in their respective current states. This is achieved by placing the first EV1 and second EV2 solenoid valves and any third EV3 and fourth EV4 solenoid valves in their closed state.
- one (MCT1) performs a sub-step 60 a test for determining whether the first difference e1 between the current Im and a necessary tilt angle In, function at least of the current speed v v and the inclination of the ground (as well as possibly the yaw rate v1) is greater than the second threshold s2.
- one (MCT1) acts in a sub-step 80 on the hydraulic circuit, associated with the front axle T1, so that it prevents one of AMD right and left AMG dampers, located on the side of the current incline Im, to reach a selected state that corresponds to a selected inclination greater than or equal to the current inclination Im (ie> Im).
- This is achieved by placing the first EV1 or second EV2 solenoid valve (which controls access to the damper chamber AMD or AMG placed on the side of the current tilt Im) and the possible third EV3 and fourth EV4 solenoid valves in their closed state.
- the invention has several advantages, among which:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1660502A FR3058093B1 (fr) | 2016-10-28 | 2016-10-28 | Procede de controle de l'inclinaison d'un vehicule inclinable par action sur un dispositif de suspension hydropneumatique |
PCT/FR2017/052716 WO2018078232A1 (fr) | 2016-10-28 | 2017-10-03 | Procédé de contrôle de l'inclinaison d'un véhicule inclinable par action sur un dispositif de suspension hydropneumatique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3532319A1 true EP3532319A1 (fr) | 2019-09-04 |
Family
ID=57861045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17794361.0A Withdrawn EP3532319A1 (fr) | 2016-10-28 | 2017-10-03 | Procédé de contrôle de l'inclinaison d'un véhicule inclinable par action sur un dispositif de suspension hydropneumatique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3532319A1 (fr) |
CN (1) | CN109996688B (fr) |
FR (1) | FR3058093B1 (fr) |
MA (1) | MA46670A (fr) |
WO (1) | WO2018078232A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113423637B (zh) * | 2019-01-29 | 2023-10-17 | 库德公司 | 控制车辆两轮倾斜的液压气动系统和配备所述系统的车辆 |
IT201900020182A1 (it) * | 2019-10-31 | 2021-05-01 | Qooder S A | Veicolo pendolante a tre o più ruote con sistema di pendolamento idraulico e con sistema di bloccaggio del pendolamento |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2706151A1 (de) * | 1977-02-14 | 1978-08-17 | Xaver Dipl Ing Bonefeld | Lenkbare achse fuer flurfoerderzeuge |
DE19738826A1 (de) | 1997-09-05 | 1999-03-11 | Daimler Benz Ag | Nicht spurgebundenes Kurvenneigerfahrzeug |
JPH11129722A (ja) * | 1997-10-30 | 1999-05-18 | Toyota Autom Loom Works Ltd | 産業車両の揺動制御装置 |
EP1572526B1 (fr) | 2002-12-20 | 2010-04-21 | Roald H. Pedersen | Vehicule presentant un chassis inclinable |
FR2933950B1 (fr) * | 2008-07-21 | 2011-02-11 | Veleance | Dispositif mecanique de controle d'inclinaison |
DE102009010850A1 (de) * | 2009-02-27 | 2010-09-02 | Trw Automotive Gmbh | Hydraulisches Fahrwerksystem |
US8123240B2 (en) * | 2009-07-10 | 2012-02-28 | Bombardier Recreational Products Inc. | Control system for leaning vehicle |
FR3031070A1 (fr) * | 2014-12-30 | 2016-07-01 | Sodikart | Vehicule pendulaire a moyens de verrouillage de l'inclinaison. |
EP3040220A1 (fr) * | 2014-12-30 | 2016-07-06 | Sodikart | Véhicule pendulaire à moyens de verrouillage de l'inclinaison |
FR3037279B1 (fr) * | 2015-06-15 | 2017-07-07 | Peugeot Citroen Automobiles Sa | Dispositif de suspension hydropneumatique pour un vehicule automobile inclinable, a electrovannes a etats fonction de l'inclinaison |
-
2016
- 2016-10-28 FR FR1660502A patent/FR3058093B1/fr active Active
-
2017
- 2017-10-03 WO PCT/FR2017/052716 patent/WO2018078232A1/fr unknown
- 2017-10-03 MA MA046670A patent/MA46670A/fr unknown
- 2017-10-03 CN CN201780067552.6A patent/CN109996688B/zh active Active
- 2017-10-03 EP EP17794361.0A patent/EP3532319A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018078232A1 (fr) | 2018-05-03 |
MA46670A (fr) | 2019-09-04 |
FR3058093A1 (fr) | 2018-05-04 |
CN109996688A (zh) | 2019-07-09 |
CN109996688B (zh) | 2022-06-17 |
FR3058093B1 (fr) | 2018-11-30 |
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