CN106678250B - A kind of and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting - Google Patents
A kind of and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting Download PDFInfo
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- CN106678250B CN106678250B CN201611222005.4A CN201611222005A CN106678250B CN 106678250 B CN106678250 B CN 106678250B CN 201611222005 A CN201611222005 A CN 201611222005A CN 106678250 B CN106678250 B CN 106678250B
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- capillary
- intrinsic frequency
- section
- system intrinsic
- shock absorber
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Classifications
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- 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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- 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
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- 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
Abstract
The invention discloses one kind and capillary variable system intrinsic frequency vehicle shock absorber operation methods of connecting；On pipeline between upper bunker and lower bunker oil transportation mouth, it is connected with capillary paralleling formula damping association section, capillary series system intrinsic frequency association section in turn from top to bottom.Capillary paralleling formula damping association section includes four capillaries in parallel, and every capillary is in series with its work of solenoid valve control.It includes concatenated four capillary that capillary series system intrinsic frequency, which is associated with section,；This four capillary is parallel with its work of solenoid valve control.The diameter of frequency modulation section minimum capillary is much larger than the diameter of resistance trimming section capillary.In the working condition table of matrix form, the group state value S of frequency modulation section solenoid valve is chosen according to situationmn, by way of changing quality, the problem of non-adjustable hydraulic vibration damper used for vehicle system frequency or adjustable extent very little can be solved.
Description
Technical field
The present invention relates to hydraulic type automobile damper fields, more particularly to a kind of and intrinsic frequency of capillary variable system of connecting
Rate vehicle shock absorber operation method.
Background technique
The damping mode of automobile mainly has fluid pressure type, vapour-pressure type, electromagnetic type.Fluid pressure type is to use to obtain widest automobile at present
Damping mode.The system frequency of hydraulic vibration absorber is the important performance indexes of vehicle shock absorber, at present fluid pressure type vibration damping
One of device performance the disadvantage is that the system frequency of damper is non-adjustable or adjustable extent very little.
The quality of hydraulic type automobile damper system intrinsic frequency will directly influence the Oscillation Amplitude of driving, comfort and
Ride comfort.
It is well known that for ideal spring oscillator, as shown in Figure 1, the intrinsic frequency of its system and spring oscillator bead
The square root of quality is inversely proportional；That is, the intrinsic frequency of system can change when changing the quality of bead.Bead
The smaller then system of quality intrinsic frequency it is higher, the intrinsic frequency of the more big then system of the quality of bead is lower.
As shown in Fig. 2, four road capillaries are capillary R8, R4, R2, R1 respectively；Their equal lengths and respectively series electrical
Magnet valve VR8、VR4、VR2、VR1Control its work.The ratio between the sectional area of this 4 road capillary is 8:4:2:1；I.e. their sectional area is
It is arranged according to 8421 binary coding rule.
In Fig. 2, damper will determine solenoid valve V according to damping requirementsR8、VR4、VR2、VR1Configuration SRn(the value model of n
Enclose: 0,1,2 ..., 15.Wherein SR0Indicate solenoid valve VR8、VR4、VR2、VR1All close.SR1Indicate VR8、VR4、VR2、VR1In only
VR1It is open-minded, remaining closing.SR2Indicate only VR2It is open-minded, remaining closing.SR3Indicate only VR2、VR1It is open-minded, remaining closing.And so on
SR4To SR15Meaning).As configuration SRnIt determines, then participates in the mass M that oscillation carries out the fluid of vibration damping in damperRnAlso it determines
?.Compared with spring oscillator, mass MRnSimilar to the pellet quality of spring oscillator；So the intrinsic frequency of damper system at this time
Rate is then determining, therefore intrinsic frequency is in determining configuration SRnUnder be nonadjustable.
Summary of the invention
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency, provide one kind and capillary of connecting is variable
System frequency vehicle shock absorber operation method reaches the mesh for improving the system frequency characteristic of hydraulic type automobile damper
's.
The present invention is achieved through the following technical solutions:
A kind of and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, which includes vehicle
Frame 11, axle 17 and hydraulic cylinder 13；The upper end of the hydraulic cylinder 13 passes through its piston rod connecting vehicle frame 11, the lower end of hydraulic cylinder 13
Cylinder body connects axle 17；Piston 15 in hydraulic cylinder 13 divides hydraulic cylinder 13 for upper bunker 14 and lower bunker 16；
On pipeline between 16 oil transportation mouth of the upper bunker 14 and lower bunker, it is connected with capillary paralleling in turn from top to bottom
Formula damping association section, capillary series system intrinsic frequency are associated with section；That is, the D hydraulic fluid port of capillary paralleling formula damping association section
The C hydraulic fluid port of the A hydraulic fluid port of bunker 14 in connection, capillary paralleling formula damping association section connects capillary series system intrinsic frequency
It is associated with the I hydraulic fluid port of section, the J hydraulic fluid port that capillary series system intrinsic frequency is associated with section connects the B hydraulic fluid port of lower bunker 16；
Vehicle shock absorber operation method is that, when generating relative motion between vehicle frame and axle, piston can generate accordingly
Or the movement of up or down, the oil-based liquid in hydraulic cylinder 13 can be by the capillary paralleling formula resistance between A hydraulic fluid port, B hydraulic fluid port at this time
Buddhist nun is associated with section and is associated with section with capillary series system intrinsic frequency, and then flows to lower bunker 16 from upper bunker 14, or under
Bunker 16 flows to upper bunker 14；
Due to the viscous effect of the intracorporal oil-based liquid of cylinder, when oil-based liquid flows through capillary paralleling formula damping association section
When, the damping of capillary paralleling formula, which is associated with the capillary to work in section, to generate damping to the flowing of oil-based liquid, thus formation pair
The mobile resistance of piston；The size of the resistance is passed through the configuration S of solenoid valve by capillary control systemRnControl, and then realize hair
The resistance trimming of the parallel damping association section of tubule；
When oil-based liquid flows through capillary series system intrinsic frequency association section, changed by capillary control system
The configuration S of solenoid valvemn, then the system frequency of adjustable vibration-damper, and then realization capillary series system intrinsic frequency
It is associated with the frequency modulation of section.
Capillary paralleling formula damping association section includes four successively capillaries in parallel, wherein every capillary is equal
It is in series with solenoid valve；The effect of the solenoid valve is to control the on-off of capillary.
The capillary series system intrinsic frequency association section includes concatenated four capillary；This four capillary is equal
It is parallel with solenoid valve；The effect of the solenoid valve is to control the on-off of capillary.
Two interface ends of the capillary series system intrinsic frequency association section are respectively I hydraulic fluid port, J hydraulic fluid port.
Four capillary sectional areas of the capillary series system intrinsic frequency association section are equal.
The length ratio of four capillaries of the capillary series system intrinsic frequency association section is 8:4:2:1；I.e.
Their length is arranged according to 8421 binary coding rule.
In four capillaries of the capillary series system intrinsic frequency association section, the diameter d of capillarymThan parallel connection
The diameter d of the maximum capillary R8 of formula damping association sectionR8It is twice above.
The capillary paralleling formula damping association section is associated with the capillary in section with capillary series system intrinsic frequency,
Disk is at " M " word shape, serpentine shape or spiral-shaped.
The capillary paralleling formula damping association section is associated with the solenoid valve in section with capillary series system intrinsic frequency
Also it is connect with capillary control system；Capillary control system is used to control the on-off of each solenoid valve.
Spring 12 is equipped between vehicle frame 11 and axle 17.
Vehicle shock absorber operation method of the invention is described further below:
When generating relative motion between vehicle frame and axle, piston can generate accordingly or the movement of up or down, at this time liquid
Oil-based liquid in cylinder pressure 13 can be by capillary paralleling formula damping association section (the hereinafter referred to as resistance trimming between A hydraulic fluid port, B hydraulic fluid port
Section) it is associated with capillary series system intrinsic frequency section (hereinafter referred to as frequency modulation section), and then lower bunker is flowed to from upper bunker 14
16, or upper bunker 14 is flowed to from lower bunker 16.
Due to the viscous effect of the intracorporal oil-based liquid of cylinder, when oil-based liquid flows through resistance trimming section, the capillary of resistance trimming section
Meeting generates damping to the flowing of oil-based liquid, to form the resistance mobile to piston；The size of the resistance is controlled by capillary
System passes through the configuration S of solenoid valveRnControl, and then realize the resistance trimming of resistance trimming section.
In damper according to damping requirements by the configuration S of resistance trimming sectionRnAfter deciding, damper is further according to intrinsic frequency
It is required that the solenoid valve V that will determine frequency modulation sectionm8、Vm4、Vm2、Vm1Configuration Smn。SmnIn, the value range of n is 0,1,2 ..., 15；
Wherein Sm0Indicate solenoid valve Vm8、Vm4、Vm2、Vm1All close；Sm1Indicate Vm8、Vm4、Vm2、Vm1In only Vm1It is open-minded, remaining closing；
Sm2Indicate only Vm2It is open-minded, remaining closing；Sm3Indicate only Vm2、Vm1It is open-minded, remaining closing.And so on Sm4To Sm15。
As the configuration S of frequency modulation sectionmnIt determines, then participates in the mass M of the fluid of oscillation in frequency modulation sectionmnAlso it determines that；To
It participates in oscillation in damper and carries out the quality of the fluid of vibration damping to be then MRn+Mmn(M hereinRnFor the fluid for participating in oscillation in resistance trimming section
Quality).Compared with spring oscillator, mass MRn、MmnSynthesis quality be then similar to the pellet quality of spring oscillator；We are logical
Cross change MmnTo change MRn、MmnSynthesis quality to change the intrinsic frequency of damper system.
Because the diameter of the capillary of frequency modulation section is all much larger than the diameter of the capillary of resistance trimming section, the pressure of frequency modulation section
Head loss is just much smaller than the head loss of resistance trimming section.In this way, the damping of damper is mainly exactly the damping of resistance trimming section, it therefore, will
Capillary paralleling formula damping association section is also referred to as resistance trimming section.Again because of influence very little of the frequency modulation section to damping, and it can change
Become the system frequency of damper, so, capillary series system intrinsic frequency association section is referred to as frequency modulation section.And because
Adjusted for the parallel capillary of resistance trimming section, frequency modulation section tandem capillary is adjusted, so, this system is exactly and capillary of connecting
(working method of first " simultaneously " expression resistance trimming section is parallel way, the work of second " string " expression frequency modulation section to pipe damper
Mode is series system).
Because the diameter of the damping very little of frequency modulation section, frequency modulation section capillary is bigger, we can be easy to pass through
The length of frequency modulation section capillary is lengthened by MmnIt is made much larger than MRn, so as to by the adjusting model of damper system intrinsic frequency
It encloses and is made very big.
The resistance trimming section of damper, frequency modulation section tandem working, the state of resistance trimming section is by configuration SRnDetermine, the state of frequency modulation section by
Configuration SmnIt determines；So the working condition of damper can be indicated with following table.
The theoretical work state table of damper:
Valued content in table above can be regarded to 16 × 16 matrix as, the element of the matrix is exactly (SRn,
Smn).Therefore, the mode of the theoretical work state matrix of damper clearly and succinctly is illustrated out by the present invention, so this
The system of invention is also referred to as the vehicle shock absorber of a kind of matrix form and capillary variable system intrinsic frequency of connecting.
The configuration S of each solenoid valve in resistance trimming section and frequency modulation sectionRn、SmnIt is controlled by the capillary control system of damper.
In matrix above, when actual motion, should reduce S to the greatest extentR0State occur；Because these states are to vibration damping
The service life of device influences bigger.
Because of the M of frequency modulation sectionmnAdjustable range it is very big, so the range that damper system intrinsic frequency changes is also very big；
To solve the problems, such as that hydraulic buffer system frequency is non-adjustable or adjustable extent very little.
The present invention compared with the existing technology, have following advantages and effects
The configuration S that the present invention passes through change frequency modulation section solenoid valvemnIt is non-adjustable to solve hydraulic buffer system frequency
Or the problem of adjustable extent very little.
Present inventive concept is ingenious, cheap, technological means is simple and easy to do.The present invention is constructed with simple mechanical structure
Digitlization adjusts the executing agency of damper system intrinsic frequency, and by the mode of the theoretical work state matrix of damper
Clearly and succinctly illustrate out；The quality of the system frequency of hydraulic buffer is greatly improved, Hyundai Motor is subtracted
The development of vibration technology has beneficial effect positive, outstanding.
Detailed description of the invention
Fig. 1 is existing spring oscillator schematic diagram.
Fig. 2 is the structural schematic diagram of the vehicle shock absorber of existing parallel capillary tube adaptive damping.
Fig. 3 is the present invention and capillary variable system intrinsic frequency vehicle shock absorber structural schematic diagram of connecting.
Specific embodiment
The present invention is more specifically described in detail combined with specific embodiments below.
Embodiment
Fig. 1, Fig. 2 related content are shown in background technology part.
As shown in Figure 3.Resistance trimming section includes that four capillaries are R8, R4, R2, R1 respectively；It their equal lengths and goes here and there respectively
Join solenoid valve VR8、VR4、VR2、VR1Control its work.The ratio between the sectional area of this four capillary is 8:4:2:1；Their length is equal
For LR。
Frequency modulation section includes that four capillaries are m8, m4, m2, m1 respectively；Their sectional areas are equal and distinguish solenoid valve in parallel
Vm8、Vm4、Vm2、Vm1Control its work；The length ratio of this four capillary is 8:4:2:1.In the present embodiment, this four hairs
The length L of most short capillary m1 in tubulem1Equal to the length L of resistance trimming section capillaryRHalf.The diameter d of this four capillarym
The diameter d of resistance trimming section maximum capillary R8 equal to 4 timesR 8。
In damper according to damping requirements by the configuration S of resistance trimming sectionRnAfter deciding, damper is further according to intrinsic frequency
It is required that the solenoid valve V that will determine frequency modulation sectionm8、Vm4、Vm2、Vm1Configuration Smn；As the configuration S of frequency modulation sectionmnIt determines, then in frequency modulation section
Participate in the mass M of the fluid of oscillationmnAlso it determines that；Then it is to participate in the quality for the fluid that oscillation carries out vibration damping in damper
MRn+Mmn(M hereinRnFor the quality for participating in the fluid vibrated in resistance trimming section).Compared with spring oscillator, mass MRn、MmnSynthesis
Quality is then similar to the pellet quality of spring oscillator；We are by changing MmnTo change MRn、MmnSynthesis quality to change subtract
The intrinsic frequency for device system of shaking.
In the present embodiment, because of diameter dm=4dR8, Lm1=0.5LR；So the head loss of frequency modulation section is just much smaller than
The head loss of resistance trimming section.Again because of diameter dm=4dR8, Lm1=0.5LR；So the M of frequency modulation sectionmnMuch larger than the M of resistance trimming sectionRn,
So that the adjustable range of damper system intrinsic frequency is very big.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other are any without departing from Spirit Essence of the invention
With changes, modifications, substitutions, combinations, simplifications made under principle, equivalent substitute mode should be, be included in of the invention
Within protection scope.
Claims (9)
1. a kind of and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, which includes vehicle frame
(11), axle (17) and hydraulic cylinder (13)；The upper end of the hydraulic cylinder (13) passes through its piston rod connecting vehicle frame (11), hydraulic cylinder
(13) lower end cylinder body connects axle (17)；Piston (15) in hydraulic cylinder (13) by hydraulic cylinder (13) be divided into upper bunker (14) and
Lower bunker (16)；It is characterized by:
On pipeline between the upper bunker (14) and lower bunker (16) oil transportation mouth, it is connected with capillary paralleling in turn from top to bottom
Formula damping association section, capillary series system intrinsic frequency are associated with section；That is, the D hydraulic fluid port of capillary paralleling formula damping association section
The C hydraulic fluid port of the A hydraulic fluid port of bunker (14) in connection, capillary paralleling formula damping association section connects the intrinsic frequency of capillary series system
Rate is associated with the I hydraulic fluid port of section, and the J hydraulic fluid port that capillary series system intrinsic frequency is associated with section connects the B hydraulic fluid port of lower bunker (16)；
That is, and first " simultaneously " in capillary variable system intrinsic frequency vehicle shock absorber of connecting indicate that the working method of resistance trimming section is
The working method of parallel way, second " string " expression frequency modulation section is series system；
Vehicle shock absorber operation method is, when generating relative motion between vehicle frame and axle, piston can generate accordingly or on
Movement under or, the oil-based liquid in hydraulic cylinder (13) can be by the capillary paralleling formula damping between A hydraulic fluid port, B hydraulic fluid port at this time
Association section is associated with section with capillary series system intrinsic frequency, and then flows to lower bunker (16), Huo Zhecong from upper bunker (14)
Bunker (14) in lower bunker (16) flow direction；
Due to the viscous effect of the intracorporal oil-based liquid of cylinder, when oil-based liquid flows through capillary paralleling formula damping association section, hair
The capillary to work in the parallel damping association section of tubule can generate damping to the flowing of oil-based liquid, move to be formed to piston
Dynamic resistance；The size of the resistance is passed through the configuration S of solenoid valve by capillary control systemRnControl, and then realize capillary simultaneously
The resistance trimming of connection formula damping association section；
When oil-based liquid flows through capillary series system intrinsic frequency association section, electromagnetism is changed by capillary control system
The configuration S of valvemn, then the system frequency of adjustable vibration-damper, and then realization capillary series system intrinsic frequency association
The frequency modulation of section.
2. according to claim 1 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
Be: capillary paralleling formula damping association section includes four successively capillaries in parallel, wherein every capillary is connected
There is solenoid valve；
The capillary series system intrinsic frequency association section includes concatenated four capillary；This four capillary is in parallel
There is solenoid valve.
3. according to claim 2 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
Be: two interface ends of the capillary series system intrinsic frequency association section are respectively I hydraulic fluid port, J hydraulic fluid port.
4. according to claim 2 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
Be: four capillary sectional areas of the capillary series system intrinsic frequency association section are equal.
5. according to claim 2 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
Be: the length ratio of four capillaries of the capillary series system intrinsic frequency association section is 8:4:2:1；I.e. they
Length be to be arranged according to 8421 binary coding rule.
6. according to claim 5 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
It is: in four capillaries of the capillary series system intrinsic frequency association section, the diameter d of capillarymThan parallel
The diameter d of the maximum capillary R8 of damping association sectionR8It is twice above.
7. according to claim 1 to described in any one of 6 and connect capillary variable system intrinsic frequency vehicle shock absorber operation
Method, it is characterised in that: the capillary paralleling formula damping association section is associated in section with capillary series system intrinsic frequency
Capillary, disk is at " M " word shape, serpentine shape or spiral-shaped.
8. according to claim 7 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
Be: solenoid valve in capillary paralleling formula damping association section and capillary series system intrinsic frequency association section also with
The connection of capillary control system；Capillary control system is used to control the on-off of each solenoid valve.
9. according to claim 7 and capillary variable system intrinsic frequency vehicle shock absorber operation method of connecting, feature
It is: is equipped with spring (12) between vehicle frame (11) and axle (17).
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| CN108180243A (en) * | 2018-01-26 | 2018-06-19 | 华南理工大学 | That a kind of single turbine recovers energy and connect R formulas vehicle shock absorber and method |
| CN108458030A (en) * | 2018-01-26 | 2018-08-28 | 华南理工大学 | That a kind of turbine recovers energy and connect R formulas vehicle shock absorber and method |
| CN108180242A (en) * | 2018-01-26 | 2018-06-19 | 华南理工大学 | The R formulas vehicle shock absorber in parallel and method that a kind of single turbine recovers energy |
| CN109101748B (en) * | 2018-08-29 | 2022-12-16 | 华南理工大学 | Pressure loss calculation method for parallel R-type automobile shock absorber |
| CN109033708B (en) * | 2018-08-29 | 2022-12-16 | 华南理工大学 | Pressure loss calculation method for series-parallel R type automobile shock absorber |
| CN109190240B (en) * | 2018-08-29 | 2022-12-16 | 华南理工大学 | Pressure loss calculation method for parallel-series R-type automobile shock absorber |
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| JP5463263B2 (en) * | 2009-11-30 | 2014-04-09 | 日立オートモティブシステムズ株式会社 | Suspension control device for vehicle |
| CN102518732B (en) * | 2011-12-27 | 2014-07-02 | 华南理工大学 | Automobile damper with variable damp of capillary tubes in serial connection |
| DE102012004684A1 (en) * | 2012-03-12 | 2013-09-12 | Daimler Ag | Shock absorber for motor car, has frequency-selective valve for damping mechanical vibrations in frequency-resolved manner, and electrical displacement damping valve designed such that force-speed-characteristic is adjustable |
| US9399382B2 (en) * | 2014-02-03 | 2016-07-26 | Cnh Industrial America Llc | Roll-over protection system |
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