Classifications

• • 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
• • 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
• • 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
• • 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
• • 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
  • B60G2400/40—Steering conditions
  • B60G2400/41—Steering angle
• • 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
  • B60G2400/50—Pressure
  • B60G2400/51—Pressure in suspension unit
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2500/00—Indexing codes relating to the regulated action or device
  • B60G2500/10—Damping action or damper
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
  • B60G2600/28—Temporary fluctuations
• • 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
• • 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
  • B60G2800/014—Pitch; Nose dive
• • 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
  • B60G2800/22—Braking, stopping

Definitions

• the present invention relates to a suspension system for a vehicle, and more particularly to a damping force control for a suspension cylinder provided between a vehicle body and front, rear, left and right wheels. Regarding the system.
• the front and rear wheels are mounted on the vehicle body via suspension cylinders to prevent the vertical movement of the front and rear wheels due to uneven road surfaces from propagating to the vehicle body.
• Suspension is conventionally known 0
• the steering angle or the steering angular velocity when the steering wheel is operated is detected, and the suspension located outside the turn is detected based on the detected steering angle or steering angular velocity.
• the damping force of the cylinder is increased to prevent the suspension from being shortened by the centrifugal force, thereby preventing rolling of the vehicle.
• the suspension cylinder when detecting the steering angle only, if the steering wheel is not operated up to the set steering angle, the suspension cylinder will fail. Since the force does not increase, the responsiveness is poor and the rolling of the vehicle body at the beginning of a turn cannot be prevented.
• the suspension cylinder when detecting the steering angular velocity, the suspension cylinder, which is positioned outside the turn when making a constant circular turn with the steering wheel fixed at the operation position, is used. The damping force cannot be increased and the mouth ring of the vehicle cannot be prevented.
• the present invention has been made in view of the above-described circumstances, and can prevent rolling of a vehicle body without delay in response during vehicle turning, particularly at high speed turning at a speed higher than a predetermined vehicle speed.
• a vehicle suspension cylinder control system that can prevent a vehicle body from rolling even when performing a circular turn. aimed to .
• Another purpose in the month of this month is to obtain the optimal suspension characteristics according to the vehicle load, and to support the vehicle when the vehicle speed falls below the specified speed _h.
• Still another object of the present invention is to increase the suspension cylinder's decay mode during braking to reduce the noise dive ( The sinking of the front of the vehicle body can be prevented, and the damping mode can be strengthened even when the carrier is dumped to prevent the front of the vehicle from lifting up.
• Another object of the present invention is to provide a vehicle suspension cylinder control system.
• a method of manufacturing a vehicle comprising: The suspension cylinders respectively mounted on the suspension cylinders and the pressure detection sensors for detecting the internal hydraulic pressure of each of these suspension cylinders Sensors, a steering angle detection section for detecting the steering angle of the steering wheel of the vehicle, and detection signals of these sensors, respectively. And a signal ⁇ for increasing the damping force of the suspension cylinder in accordance with the steering angular velocity from the steering angle detection sensor ⁇ , ⁇ the left and right suspensions of the rear wheels, respectively.
• a vehicle suspension series including a controller that outputs until the difference between the hydraulic pressures of the cylinder and the cylinder falls below a certain value.
• An underground control system is provided.
• control system further comprising: a vehicle speed detection sensor for detecting a traveling degree of the vehicle; and a brake of the vehicle.
• a brake detection sensor for detecting key operation, and a dump lever position detection sensor for detecting a dump state of the carrier.
• a control system is provided.
• control system according to any one of the first and second aspects, wherein the control system is output from the control CJ roller.
• the air solenoid K valve means for driving the damping force switching means provided on the suspension cylinder in accordance with the damping force switching signal is provided.
• the vehicle's suspension cylinder control system is provided. Provided.
• FIG. 1 is a schematic system diagram showing a specific example of the present invention.
• FIG. 2A is a longitudinal sectional view of a suspension cylinder used in the specific example shown in FIG. 1, and
• Fig. 2B is a cross-sectional view along the line B-B in Fig. 2A.
• FIG. 1 is an explanatory diagram schematically showing the entire control system of the present invention.
• Front and rear wheels 2 and rear wheels 3 (only one wheel is shown in Fig. 1) on the front, rear, left and right sides of the vehicle body 1.
• Power suspension cylinders 4 are mounted respectively. As shown in FIG. 1, when the steering wheel 5 is operated, the front wheels 2 are steered, and each suspension is operated.
• a steering angle detection sensor 7, a brake detection sensor 8, a vehicle speed detection sensor 9, etc. They are arranged to output a detection signal to the controller 10.
• an air solenoid that changes the damping force of the suspension cylinder 4 according to the damping force switching signal from the controller 10 and the like.
• the valve assembly 11 is installed.
• each suspension cylinder 4 has a view inside the cylinder tube 41.
• the extension chamber 43 and the reduction chamber 44 were formed by inserting the stones 42 into the extension chamber 43, and the extension chamber 43 and the reduction chamber 44 were connected to each other via the throttle 45.
• the opening area of the aperture By changing the opening area of the aperture, the suspension cylinder 4's weakness can be changed. .
• the air tank 13 is connected via the air solenoid valve device 11 to the actuator 12 to change the aperture opening area.
• the damping force of the suspension cylinder 4 is changed.
• the controller 1 ⁇ sends an excitation signal to the air solenoid valve device 11. And the damping force of the suspension cylinder 4 is largely determined, and the left and right suspension cylinders are provided with hydraulic pressure from the pressure detection sensor 6.
• the demagnetizing signal of the solenoid valve 11 is output to reduce the damping force of the suspension cylinder 4. It is designed to be small. Therefore, as soon as the steering wheel 5 is operated, the damping force of the suspension cylinder 4 increases and the vehicle turns.
• Rolling during running can be prevented with good responsiveness, and the damping force increases if the difference between the hydraulic pressures of the left and right suspension cylinders 4 is greater than a certain value. Since the steering wheel 5 is continuously maintained, the rolling can be prevented when the steering wheel 5 is fixed at the operation position and the vehicle makes a constant circular turn.
• the vehicle speed signal is sent from the vehicle speed detection sensor 9 and the brake signal is sent from the brake detection sensor 8.
• the excitation signal described above is not output to the air solenoid valve device 11 but is output to the high speed running record.
• the above excitation signal is output to the air solenoid valve device 11 during braking to prevent the front portion of the vehicle body from lowering, that is, to prevent noise dive.
• a dump lever position detection sensor 14 is provided to prevent this, and when the carrier is dumped, the sensor 14 force and the dump lever position signal are output. Is output to the controller 10, and as a result, the air solenoid valve device 11 receives the damping force switching signal from the controller 10 and suspends. Act to increase the strength of the cylinder 4 and prevent the body 1 from lifting up on the front side.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Vehicle Body Suspensions (AREA)
• Valve Device For Special Equipments (AREA)
• Output Control And Ontrol Of Special Type Engine (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=14261276

Family Applications (1)

Country Status (8)

Families Citing this family (20)

Citations (5)

Family Cites Families (5)

• 1988
  • 1988-07-29 JP JP1988099961U patent/JPH0221006U/ja active Pending
• 1989
  • 1989-07-27 DE DE68915532T patent/DE68915532T2/de not_active Expired - Fee Related
  • 1989-07-27 EP EP89908852A patent/EP0381774B1/en not_active Expired - Lifetime
  • 1989-07-27 WO PCT/JP1989/000769 patent/WO1990001427A1/ja active IP Right Grant
  • 1989-07-27 AU AU40405/89A patent/AU628843B2/en not_active Ceased
  • 1989-07-27 US US07/469,470 patent/US5016910A/en not_active Expired - Fee Related
  • 1989-07-28 CA CA000606944A patent/CA1328624C/en not_active Expired - Fee Related
• 1990
  • 1990-03-29 RU SU904743714A patent/RU1838164C/ru active

Patent Citations (5)

Non-Patent Citations (1)

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