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GB1450765A - Vehicle suspension systems - Google Patents

Vehicle suspension systems

Info

Publication number
GB1450765A
GB1450765A GB4294772A GB4294772A GB1450765A GB 1450765 A GB1450765 A GB 1450765A GB 4294772 A GB4294772 A GB 4294772A GB 4294772 A GB4294772 A GB 4294772A GB 1450765 A GB1450765 A GB 1450765A
Authority
GB
United Kingdom
Prior art keywords
signal
orifices
vehicle body
orifice
velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4294772A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Witt D C
Original Assignee
Witt D C
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Witt D C filed Critical Witt D C
Priority to GB4294772A priority Critical patent/GB1450765A/en
Publication of GB1450765A publication Critical patent/GB1450765A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0152—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 action on a particular type of suspension unit
    • 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
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • 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
    • F16F9/32—Details
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • 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
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

1450765 Automatically adjustable fluid dampers; valves D C WITT 17 Sept 1973 [15 Sept 1972] 42947/72 Headings F2S and F2V [Also in Division G3] A vehicle suspension system includes a fluid damper (Fig. 1) with a restricted orifice 18, and control means which vary the cross-sectional area of the orifice automatically in response to a signal related to the vertical velocity of the vehicle body. A signal from an accelerometer (Fig. 3) is integrated and filtered and causes electromagnetic (Fig. 2) or hydraulic (Fig. 4) adjustment of the orifice in response to transient variations in vertical vehicle body velocity. Obtaining the signal. Fig. 3.-The mass 51 of the accelerometer is mounted on the vehicle body 13 in the vicinity of the damper. Vertical acceleration of the mass is sensed by a piezoelectric element 54. The signal is integrated by an amplifier 65 and the resulting velocity signal is filtered by the resistor 66 so that the low frequency velocity signal components generated by a steady vertical acceleration of the vehicle body 13 are removed and only the transient components of the velocity signal remain. This filtered signal is passed either to an electrohydraulic transducer (not shown) influencing the spool valve of Fig. 4, or to coils 45, 46 influencing the electromagnetically operated valve of Fig. 2. Adjusting the orifice electromagnetically, Fig. 2.-Fig. 2 shows in more detail the flow path 17 of Fig. 1 and its restriction 18. Flow in each direction is controlled by one of the orifices 30A, 30B, the other being by-passed by its associated non-return flap valve. The size of the orifices is adjusted by electromagnetic actuation of a rod 39 carrying enlargements 49A, 49B, when current flows in the coils 45, 46. Bowed leaf springs 48A, 48B engage between fixed discs 28A, 28B and flanges 47A, 47B on the rod 39 to bias the rod to its central position. Adjusting the or flee hydraulically, Fig. 4.- Fig. 4 shows in more detail the flow path 17 of Fig. 1 and its restriction 18. Flow in each direction is controlled by one of the orifices 83, 84 the other being closed by its associated ball valve. An increased pressure is supplied from the transducer to one or other of end ports 80, 81 to move the spool 87 to restrict one or other of the orifices 83, 84.
GB4294772A 1972-09-15 1972-09-15 Vehicle suspension systems Expired GB1450765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4294772A GB1450765A (en) 1972-09-15 1972-09-15 Vehicle suspension systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4294772A GB1450765A (en) 1972-09-15 1972-09-15 Vehicle suspension systems

Publications (1)

Publication Number Publication Date
GB1450765A true GB1450765A (en) 1976-09-29

Family

ID=10426667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4294772A Expired GB1450765A (en) 1972-09-15 1972-09-15 Vehicle suspension systems

Country Status (1)

Country Link
GB (1) GB1450765A (en)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449236A1 (en) * 1979-02-16 1980-09-12 Brochot Maurice Hydraulic two=way ram shock absorber for car - has remote controlled pneumatic bellows to vary resistance valves to transfer feed
FR2473429A1 (en) * 1980-01-12 1981-07-17 Lucas Industries Ltd DEVICE FOR ADJUSTING THE HYDRAULIC SUSPENSION OF A VEHICLE
FR2520077A1 (en) * 1982-01-20 1983-07-22 Lucas Ind Plc VALVE ARRANGEMENT FOR REGULATING THE DAMPING PRESSURE IN VEHICLE SUSPENSIONS
GB2131521A (en) * 1982-11-20 1984-06-20 Honda Motor Co Ltd Solenoid valves
FR2560325A1 (en) * 1984-02-25 1985-08-30 Boge Gmbh SHOCK ABSORBER FOR VEHICLE SUSPENSIONS
WO1985004698A1 (en) * 1984-04-04 1985-10-24 Blixt, Rolf Means for a shock-absorber
GB2158184A (en) * 1984-05-03 1985-11-06 Armstrong Patents Co Ltd Hydraulic shock absorber with electromagnetically controlled valve
EP0197316A3 (en) * 1985-04-12 1987-05-27 Robert Bosch Gmbh Device for damping motions
EP0197317A3 (en) * 1985-04-12 1987-05-27 Robert Bosch Gmbh Method of and means for controlling spring stiffness, especially for vehicles
GB2185722A (en) * 1986-01-29 1987-07-29 Hitachi Ltd Vibration control apparatus for vehicles
EP0221486A3 (en) * 1985-10-26 1987-08-26 Toyota Jidosha Kabushiki Kaisha Shock absorber controller
EP0239831A1 (en) * 1986-03-06 1987-10-07 Toyota Jidosha Kabushiki Kaisha Suspension control method and apparatus
EP0243613A1 (en) * 1986-04-02 1987-11-04 Robert Bosch Gmbh Device for damping movements
EP0280824A1 (en) * 1987-03-02 1988-09-07 Jimecal Damper for a vehicle having air suspension, especially for a heavy vehicle
DE3823840A1 (en) * 1987-07-18 1989-01-26 Barmag Barmer Maschf Shock absorber
DE3731228A1 (en) * 1987-09-17 1989-03-30 Teves Gmbh Alfred ADJUSTABLE VIBRATION DAMPER
US4923038A (en) 1986-06-05 1990-05-08 Lizell Magnus B Method and apparatus for absorbing mechanical shock
US4943083A (en) * 1989-03-13 1990-07-24 Monroe Auto Equipment Company Signal conditioning circuit assembly
US4955460A (en) * 1988-08-01 1990-09-11 Monroe Auto Equipment Company Control valve for shock absorbers
EP0367949A3 (en) * 1988-11-08 1990-12-05 Daimler-Benz Aktiengesellschaft Springing system for vehicles
US5107969A (en) * 1987-09-17 1992-04-28 Alfred Teves Gmbh Controllable vibration damper
US5123671A (en) * 1989-03-13 1992-06-23 Monroe Auto Equipment Company Method and apparatus for controlling shock absorbers
US5152379A (en) * 1990-04-16 1992-10-06 Monroe Auto Equipment Company Adjustable shock absorber assembly
US5211268A (en) * 1988-08-01 1993-05-18 Monroe Auto Equipment Company Control valve for shock absorbers
US5217095A (en) 1986-06-05 1993-06-08 Monroe Auto Equipment Company Method and apparatus for absorbing mechanical shock
US5326129A (en) * 1984-04-04 1994-07-05 Ohlins Racing Ab Means for a shock absorber
US5363945A (en) * 1988-08-01 1994-11-15 Monroe Auto Equipment Company Control valve for shock absorbers
US5529152A (en) * 1994-07-08 1996-06-25 Aimrite Systems International, Inc. Variable constant force hydraulic components and systems
US5653315A (en) * 1994-03-21 1997-08-05 Monroe Auto Equipment Company Automatic damper system
CN105525697A (en) * 2016-01-26 2016-04-27 广州大学 Smart bypass type viscous damper adopting laminated piezoelectric actuator for adjustment

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449236A1 (en) * 1979-02-16 1980-09-12 Brochot Maurice Hydraulic two=way ram shock absorber for car - has remote controlled pneumatic bellows to vary resistance valves to transfer feed
FR2473429A1 (en) * 1980-01-12 1981-07-17 Lucas Industries Ltd DEVICE FOR ADJUSTING THE HYDRAULIC SUSPENSION OF A VEHICLE
FR2520077A1 (en) * 1982-01-20 1983-07-22 Lucas Ind Plc VALVE ARRANGEMENT FOR REGULATING THE DAMPING PRESSURE IN VEHICLE SUSPENSIONS
GB2131521A (en) * 1982-11-20 1984-06-20 Honda Motor Co Ltd Solenoid valves
FR2560325A1 (en) * 1984-02-25 1985-08-30 Boge Gmbh SHOCK ABSORBER FOR VEHICLE SUSPENSIONS
GB2154700A (en) * 1984-02-25 1985-09-11 Boge Gmbh Control of dampers for vehicle suspension
WO1985004698A1 (en) * 1984-04-04 1985-10-24 Blixt, Rolf Means for a shock-absorber
US4732408A (en) * 1984-04-04 1988-03-22 Oehlin Kenth Means for a shock-absorber
US5326129A (en) * 1984-04-04 1994-07-05 Ohlins Racing Ab Means for a shock absorber
GB2158184A (en) * 1984-05-03 1985-11-06 Armstrong Patents Co Ltd Hydraulic shock absorber with electromagnetically controlled valve
EP0197316A3 (en) * 1985-04-12 1987-05-27 Robert Bosch Gmbh Device for damping motions
EP0197317A3 (en) * 1985-04-12 1987-05-27 Robert Bosch Gmbh Method of and means for controlling spring stiffness, especially for vehicles
EP0221486A3 (en) * 1985-10-26 1987-08-26 Toyota Jidosha Kabushiki Kaisha Shock absorber controller
US4756549A (en) * 1985-10-26 1988-07-12 Toyota Jidosha Kabushiki Kaisha Shock absorber controller
GB2185722A (en) * 1986-01-29 1987-07-29 Hitachi Ltd Vibration control apparatus for vehicles
GB2185722B (en) * 1986-01-29 1989-11-01 Hitachi Ltd Vibration control apparatus for vehicles
US4747615A (en) * 1986-03-06 1988-05-31 Toyota Jidosha Kabushiki Kaisha Suspension control method
EP0239831A1 (en) * 1986-03-06 1987-10-07 Toyota Jidosha Kabushiki Kaisha Suspension control method and apparatus
EP0243613A1 (en) * 1986-04-02 1987-11-04 Robert Bosch Gmbh Device for damping movements
US4923038A (en) 1986-06-05 1990-05-08 Lizell Magnus B Method and apparatus for absorbing mechanical shock
US5217095A (en) 1986-06-05 1993-06-08 Monroe Auto Equipment Company Method and apparatus for absorbing mechanical shock
US5025899A (en) 1986-06-05 1991-06-25 Lizell Magnus B Method and apparatus for absorbing mechanical shock
FR2611606A1 (en) * 1987-03-02 1988-09-09 Jimecal DAMPER FOR A VEHICLE HAVING PNEUMATIC SUSPENSIONS, IN PARTICULAR FOR HEAVY WEIGHT
EP0280824A1 (en) * 1987-03-02 1988-09-07 Jimecal Damper for a vehicle having air suspension, especially for a heavy vehicle
DE3823840A1 (en) * 1987-07-18 1989-01-26 Barmag Barmer Maschf Shock absorber
DE3731228A1 (en) * 1987-09-17 1989-03-30 Teves Gmbh Alfred ADJUSTABLE VIBRATION DAMPER
US5107969A (en) * 1987-09-17 1992-04-28 Alfred Teves Gmbh Controllable vibration damper
US5211268A (en) * 1988-08-01 1993-05-18 Monroe Auto Equipment Company Control valve for shock absorbers
US4955460A (en) * 1988-08-01 1990-09-11 Monroe Auto Equipment Company Control valve for shock absorbers
US5363945A (en) * 1988-08-01 1994-11-15 Monroe Auto Equipment Company Control valve for shock absorbers
EP0367949A3 (en) * 1988-11-08 1990-12-05 Daimler-Benz Aktiengesellschaft Springing system for vehicles
US4943083A (en) * 1989-03-13 1990-07-24 Monroe Auto Equipment Company Signal conditioning circuit assembly
US5123671A (en) * 1989-03-13 1992-06-23 Monroe Auto Equipment Company Method and apparatus for controlling shock absorbers
US5152379A (en) * 1990-04-16 1992-10-06 Monroe Auto Equipment Company Adjustable shock absorber assembly
US5653315A (en) * 1994-03-21 1997-08-05 Monroe Auto Equipment Company Automatic damper system
US5529152A (en) * 1994-07-08 1996-06-25 Aimrite Systems International, Inc. Variable constant force hydraulic components and systems
CN105525697A (en) * 2016-01-26 2016-04-27 广州大学 Smart bypass type viscous damper adopting laminated piezoelectric actuator for adjustment

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee