EP4093622A1 - Suspension inertielle pour vehicule - Google Patents
Suspension inertielle pour vehiculeInfo
- Publication number
- EP4093622A1 EP4093622A1 EP20828044.6A EP20828044A EP4093622A1 EP 4093622 A1 EP4093622 A1 EP 4093622A1 EP 20828044 A EP20828044 A EP 20828044A EP 4093622 A1 EP4093622 A1 EP 4093622A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- suspension
- pipe
- inertial
- vehicle
- wheel rim
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/16—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/16—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase
- B60G13/18—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dynamic absorbers as main damping means, i.e. spring-mass system vibrating out of phase combined with energy-absorbing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/182—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein comprising a hollow piston rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/08—Inertia
Definitions
- the invention relates to an inertial suspension for a motor vehicle as well as to a wheel rim comprising such an inertial suspension.
- the invention also relates to a motor vehicle comprising such wheel rims on its front axle.
- the suspension system is made necessary because of the irregularities of the ground on which the vehicle moves, irregularities which cause shocks and vibrations impacting the vehicle and its passengers.
- a vehicle wheel suspension comprises a mechanical connection between unsprung masses and suspended masses, a spring and a shock absorber.
- Unsprung masses typically include the wheel and drive parts thereof or brake parts.
- Suspended masses typically include the vehicle body and its powertrain, as well as all other vehicle components attached to the body.
- Vehicle weight is a parameter that plays an important role in optimizing a suspension system.
- a high vehicle weight introduces a greater inertia which can allow a better optimization of the performance of the suspension system, in particular in terms of comfort for The passengers. Indeed, a high inertia makes more difficult the movements of the masses linked to the irregularities of the ground and promotes greater filtering of shocks and vibrations.
- inertia device also called “inerter”
- inerter The concept of the inertia device, also called “inerter”, was introduced by Malcolm C. Smith in his article “Synthesis of mechanical networks: The inerter”, IEEE Transactions on Automatic Control, vol.47, n ° 10 , 2002, pages 1648 to 1662, based on the analogy between electrical and mechanical systems.
- inerter the concept of the inertia device, also called “inerter”
- IEEE Transactions on Automatic Control vol.47, n ° 10 , 2002, pages 1648 to 1662, based on the analogy between electrical and mechanical systems.
- Perfectance benefits in passive vehicle suspensions employing inerters Vehicle System Dynamics, 2004, vol. 42, No. 4, pages 235-257, Malcolm C. Smith et al. describe the value of integrating an inertia in a passive vehicle suspension.
- An inertia device can be implemented as a mechanical system, for example with a flywheel mounted on a rack, or as a hydraulic circuit.
- the inertia device integrated into a suspension, then called “inertial suspension”, produces an effect similar to an increase in the inertia of the suspended masses.
- a hydraulic inertia device with a variable coefficient of inertia for a suspension.
- the device has a double spiral pipe providing two fluid circulation circuits.
- the double pipe is connected to the upper and lower chambers of a cylinder, the piston of which is moved by the movements of the suspension.
- Regulating valves are provided to control the passage of the fluid through one or the other of the circulation circuits, so as to modify the coefficient of inertia of the device.
- Document FR3073174A1 describes a hydraulic motor vehicle suspension damper comprising a main piston moved during the movements of the suspension and separating two main chambers, a column of inertial fluid and two annexed chambers connected to the main chambers.
- the adjoining rooms include a return spring and are separated by a floating piston having a balancing leakage port.
- a bypass channel is also provided in the bore receiving this floating piston.
- the floating piston is linked to an inertia piston separating two inertia chambers interconnected by the column of fluid.
- the aim of the invention is therefore to overcome the drawbacks of the prior art by providing an inertial suspension simplifying the installation thereof in a motor vehicle.
- the invention thus relates, in its broadest acceptance, to an inertial suspension for a vehicle, in particular a motor vehicle, comprising a jack comprising a piston separating an upper chamber and a lower chamber, said piston comprising a rod, said piston.
- inertial suspension being remarkable in that it further comprises a first pipe and a second pipe suitable for the circulation of a hydraulic fluid, said rod comprising a recess allowing said hydraulic fluid to circulate between said upper chamber and said lower chamber via the first and second pipelines.
- said upper chamber is connected to an upper accumulator and said lower chamber is connected to a lower accumulator.
- said inertial suspension further comprises a connector comprising a first cavity and a second cavity, said first cavity connecting said first pipe and said second pipe and said second cavity connecting said second pipe and said lower chamber.
- a connector comprising a first cavity and a second cavity, said first cavity connecting said first pipe and said second pipe and said second cavity connecting said second pipe and said lower chamber.
- at least one pressure drop damper is arranged between said upper chamber and said upper accumulator and / or between said lower chamber and said lower accumulator.
- said first and second pipes have respectively a first substantially cylindrical casing and a second substantially cylindrical casing, the first casing having a first internal diameter and the second casing having a second internal diameter.
- said first and second envelopes each have an opening.
- the first internal diameter of the first envelope is greater than the second internal diameter of the second envelope.
- the invention also relates to a vehicle wheel rim remarkable in that said wheel rim comprises an inertial suspension comprising any of the preceding characteristics.
- said wheel rim has an interior recess, said first and second pipes being arranged in said interior recess.
- the invention also relates to a vehicle which is remarkable in that it comprises a front axle comprising a wheel rim arranged at the front left, according to the invention, and a wheel rim arranged at the front right, according to the invention. .
- FIG.1 is a schematic perspective view of a left front wheel rim of a motor vehicle comprising an inertial suspension according to an embodiment of the present invention
- FIG.2 illustrates a perspective view of the inertial suspension shown in Figure 1;
- FIG.3 is a sectional view of part of the inertial suspension shown in Figure 2.
- the rim 120 comprises various parts that are conventionally found in the environment close to a wheel rim of a motor vehicle such as a brake caliper 130, a transmission shaft 131, a triangle 132, a steering rod 133. or a brake hose 134.
- the inertial suspension 100 comprises an upper accumulator 101, a lower accumulator 102, a cylinder 103, a connection box 104, a first pipe 105 and a second pipe 106.
- the first and second pipes 105, 106 are best seen in Figure 2.
- a suspension spring cup 140 is integral with the cylinder 103.
- the suspension spring is not shown in any of the figures.
- FIG 3 we see said cylinder 103 comprising, in particular, an upper chamber 107, a lower chamber 108 and a piston 112.
- a hydraulic fluid (not shown) circulates in the inertial suspension 100 between said upper chamber 107 and said lower chamber 108.
- the cylinder 103 further comprises a rod 109, comprising a recess, able to move in translation in the body 110 of the cylinder 103. When the rod 109 moves towards said upper chamber 107, the hydraulic fluid is capable of moving in translation.
- said hydraulic fluid then circulates towards the upper accumulator 101, on the one hand, and, on the other hand, to the first pipe 105 via a first flexible (not shown nty).
- the hydraulic fluid then passes through a first cavity (not shown) of said connection box 104, said first cavity connecting the first pipe 105 to the second pipe 106.
- a first damper forming a pressure drop (not shown) is arranged in the first cavity. and between the first and second pipes 105, 106.
- the hydraulic fluid circulates in the first pipe 105, then passes through the first damper forming a pressure drop and then travels in the second pipe 106.
- the hydraulic fluid leaves the second pipe 106 and then circulates again in the connection box 104 in a second cavity 111.
- the second cavity 111 connects, on the one hand, the lower accumulator 102 and the second pipe 106 and, on the other hand, the accumulator 102 and the lower chamber 108.
- a second damper forming a pressure drop (not shown) is arranged in the second cavity 111, between the lower accumulator 102 and the second pipe 106 and between the lower accumulator 102 and the lower chamber 108.
- the hydraulic fluid completes its path in the lower chamber 108.
- the first and second pipes 105, 106 are arranged so as to fit into the interior volume of the wheel rim 120.
- the first and second pipes 105, 106 present tent respectively, on the one hand, a first substantially cylindrical envelope and a second substantially cylindrical envelope, on the other hand, a first coil shape and a second coil shape.
- the first cylindrical casing of the first pipe 105 thus has a first internal diameter D1, its axis being substantially coincident with the axis of the wheel rim 120.
- the first cylindrical casing of the first pipe 105 has an opening, that is to say that the first pipe 105 passes through the first cylindrical envelope over a first angle A1 of less than 360 °.
- the first angle A1 has a value of between 180 ° and 220 °.
- the second cylindrical casing of the second pipe 106 has a second internal diameter D2, its axis also being substantially coincident with the axis of the wheel rim 120 and the second cylindrical casing of the second pipe 105 has also an opening, that is to say that the second pipe 105 runs through the second cylindrical casing over a second angle A2 less than 360 °.
- the second angle A2 has a value between 180 ° and 200 °.
- the first angle A1 and the second angle A2 are substantially equal.
- the first pipe 105 is formed of a tube having a diameter d1, small compared to the first internal diameter D1, for example 10 to 20 times smaller.
- the second pipe 106 is also formed of a tube having a diameter d2, small compared to the second internal diameter D2, for example 10 to 20 times smaller.
- the first internal diameter D1 of the first pipe 105 is greater than the second internal diameter D2 of the second pipe 106.
- the particular configuration of the first and second pipes 105, 106 has the advantage of obtaining a compact inertial suspension 100 thus making it possible to be easily installed.
- the configuration of the rod 109 makes it possible to accommodate the cylinder 103 of the inertial suspension 100 in the internal volume of the suspension spring supported by the suspension spring cup 140. In this way, the inertial suspension 100 according to the invention exhibits increased compactness.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Body Suspensions (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2000519A FR3106302B1 (fr) | 2020-01-20 | 2020-01-20 | Suspension inertielle pour vehicule |
| PCT/FR2020/052266 WO2021148729A1 (fr) | 2020-01-20 | 2020-12-03 | Suspension inertielle pour vehicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4093622A1 true EP4093622A1 (fr) | 2022-11-30 |
Family
ID=70804702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20828044.6A Pending EP4093622A1 (fr) | 2020-01-20 | 2020-12-03 | Suspension inertielle pour vehicule |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4093622A1 (fr) |
| CN (1) | CN114981103B (fr) |
| FR (1) | FR3106302B1 (fr) |
| WO (1) | WO2021148729A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1259452A (fr) | 1968-01-22 | 1972-01-05 | ||
| US6050558A (en) * | 1998-01-19 | 2000-04-18 | Agra; Luis Alberto | Inertial suspension stabilizer |
| CN105276060B (zh) | 2015-11-10 | 2017-12-05 | 江苏大学 | 一种可变惯质系数的双管路液体惯容器 |
| FR3073174B1 (fr) | 2017-11-08 | 2019-10-04 | Psa Automobiles Sa | Amortisseur hydraulique de suspension de vehicule avec colonne a inertie |
| CN108001144A (zh) * | 2018-01-11 | 2018-05-08 | 南京信息职业技术学院 | 一种变惯性车辆被动悬架能量吸收器 |
| FR3079275B1 (fr) * | 2018-03-26 | 2021-04-16 | Psa Automobiles Sa | Amortisseur hydraulique de suspension de vehicule avec colonne de fluide a inertie formee dans la tige axiale |
| FR3080162B1 (fr) * | 2018-04-17 | 2020-08-21 | Psa Automobiles Sa | Amortisseur inertiel pour suspension de vehicule automobile |
| CN208452731U (zh) * | 2018-07-03 | 2019-02-01 | 江苏开放大学(江苏城市职业学院) | 一种刚度和阻尼可调的油气悬架结构 |
-
2020
- 2020-01-20 FR FR2000519A patent/FR3106302B1/fr active Active
- 2020-12-03 WO PCT/FR2020/052266 patent/WO2021148729A1/fr not_active Ceased
- 2020-12-03 CN CN202080093942.2A patent/CN114981103B/zh active Active
- 2020-12-03 EP EP20828044.6A patent/EP4093622A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3106302B1 (fr) | 2024-11-08 |
| CN114981103A (zh) | 2022-08-30 |
| CN114981103B (zh) | 2025-02-18 |
| FR3106302A1 (fr) | 2021-07-23 |
| WO2021148729A1 (fr) | 2021-07-29 |
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Legal Events
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
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