CN113446347A - Hydraulic suspension of automobile engine - Google Patents
Hydraulic suspension of automobile engine Download PDFInfo
- Publication number
- CN113446347A CN113446347A CN202110750616.0A CN202110750616A CN113446347A CN 113446347 A CN113446347 A CN 113446347A CN 202110750616 A CN202110750616 A CN 202110750616A CN 113446347 A CN113446347 A CN 113446347A
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- Prior art keywords
- decoupling
- shell
- annular electromagnet
- channel
- amplitude
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- 239000000725 suspension Substances 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 25
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 230000033001 locomotion Effects 0.000 description 15
- 239000000919 ceramic Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1208—Resilient supports
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
- F16F13/266—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for acting dynamically on the walls bounding a passage between working and equilibration chambers
Abstract
The invention discloses an automobile engine hydraulic suspension, which comprises a shell and a rubber main spring, wherein an inertia channel body is fixed in the shell, a decoupling channel and an inertia channel are arranged in the inertia channel body, a decoupling disc is arranged in the decoupling channel, the upper part and the lower part of the decoupling channel are respectively communicated with the shell through communicating ports, an amplitude detection unit is arranged at the connecting part of the shell and the rubber main spring, an annular electromagnet is fixed around the communicating port and the communicating part in the decoupling channel, a magnetic suction body is embedded and fixed at the position of the decoupling disc corresponding to the annular electromagnet, and the amplitude detection unit and the annular electromagnet are respectively and electrically connected with a control system. The invention can improve the damping effect of the hydraulic suspension during high-amplitude and low-amplitude vibration.
Description
Technical Field
The invention relates to the field of hydraulic suspensions, in particular to an automobile engine hydraulic suspension.
Background
The hydraulic suspension is used for damping vibration of an engine and generally comprises a shell, a rubber main spring, an inertia channel body, a bottom die and the like, wherein the rubber main spring is fixed on the upper portion of the shell and connected with the engine, hydraulic medium is filled in the shell, the inertia channel body is fixed in the shell and divides the interior of the shell into an upper portion and a lower portion by the inertia channel body, a decoupling channel is arranged in the middle of the inertia channel body, the upper portion and the lower portion of the decoupling channel are respectively and correspondingly communicated with the upper portion and the lower portion of the interior of the shell through communicating ports, a decoupling disc is arranged in the decoupling channel and is horizontal and divides the decoupling channel up and down, a gap is formed between the edge of the decoupling disc and the inner wall of the decoupling channel, the inertia channel body is also provided with the inertia channel, and the inertia channel is respectively communicated with the upper portion and the lower portion of the interior of the shell.
The hydraulic suspension working process in the prior art is as follows: when the engine generates low-amplitude or high-amplitude vibration, the volume of the upper space in the housing between the rubber main spring and the inertia channel body is compressed or stretched, so that the pressure of the upper space in the housing is increased or decreased along with the change of the volume. During low-amplitude vibration, the inertia channel is self-locked (the blocking effect of the inertia channel under the low-amplitude vibration is larger than the hydraulic pressure entering the inertia channel, which is equivalent to the self-locking of the inertia channel), and a hydraulic medium mainly flows from a gap between the inner wall of the decoupling channel and the edge of the decoupling disk; when the upper space in the shell is compressed and the hydraulic pressure is increased, the hydraulic medium corresponding to the compressed volume of the upper part in the shell enters the decoupling channel and enters the lower part in the shell through the decoupling channel, and the decoupling disc moves downwards. When the upper part space in the shell is stretched, so that the hydraulic pressure is reduced, the lower part hydraulic medium in the shell enters the decoupling channel and enters the upper part in the shell through the decoupling channel to fill the stretched volume of the upper part in the shell, and meanwhile, the decoupling disc moves upwards. The up-and-down movement of the decoupling disc is utilized to lead the liquid pressure of the upper part and the lower part in the shell to quickly tend to be balanced, thereby realizing the damping function.
When the decoupling disc vibrates in high amplitude, the up-and-down motion of the decoupling disc can reach the limit position, namely, the upper communicating port of the decoupling channel is blocked when the decoupling disc moves upwards to the upper limit position, the lower communicating port of the decoupling channel is blocked when the decoupling disc moves downwards to the lower limit position, when the communicating ports are blocked, the upper communicating port and the lower communicating port of the decoupling channel are equivalently closed, hydraulic medium can only flow in the upper part and the lower part of the shell through the inertia channel under the hydraulic action, and the damping function is realized through the blocking effect of the inertia channel on the flowing medium.
According to the hydraulic suspension working process in the prior art, when the high-amplitude vibration occurs, although the decoupling disc can move to the limit position to close the decoupling channel, the flowing medium can pass through the inertia channel, but the inertia channel cannot be fixed at the limit position, so that the inertia channel does not completely cooperate with the flowing medium to play a damping and vibration-damping role during the high-amplitude vibration. And in low amplitude vibration, the up-and-down motion of the decoupling disc is adapted to the hydraulic change of the upper part and the lower part in the shell, and the up-and-down motion of the decoupling disc cannot be actively adjusted.
Disclosure of Invention
The invention aims to provide a hydraulic mount for an automobile engine, which solves the problems that a decoupling plate cannot be fixed during high-amplitude vibration and the motion of the decoupling plate cannot be actively adjusted during low-amplitude vibration in the hydraulic mount in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an automobile engine hydraulic pressure suspension, includes the rubber main spring that shell and shell upper portion are connected, fills in the shell to have hydraulic medium, and the shell internal fixation has inertia passageway body, separates the shell inside by inertia passageway body and divide into upper and lower two parts, the internal decoupling zero passageway that is equipped with of inertia passageway is equipped with the decoupling zero dish in the decoupling zero passageway, and upper and lower part of decoupling zero passageway corresponds and the shell in upper and lower part intercommunication through the intercommunication mouth respectively, and the internal inertia passageway that still is equipped with upper and lower two parts in the intercommunication shell of inertia passageway, its characterized in that: the decoupling device is characterized in that an amplitude detection unit is arranged at the joint of the shell and the rubber main spring, an annular electromagnet is fixed around the outer ring of the joint in the communicating port and the decoupling channel, one magnetic pole face of the annular electromagnet faces the decoupling disc, a magnetic attraction body is embedded and fixed in the position of the decoupling disc corresponding to the annular electromagnet, and the amplitude detection unit and the annular electromagnet are respectively electrically connected with a control system outside the shell.
Furthermore, the annular electromagnet is arranged outside the communication position of the upper communication port and the decoupling channel, and one magnetic pole surface of the annular electromagnet faces downwards to the decoupling disk.
Furthermore, the annular electromagnet is arranged outside the communication position of the lower communication port and the decoupling channel, and one magnetic pole face of the annular electromagnet faces upwards to the decoupling disk.
Furthermore, in the decoupling channel, the communication ports at the upper part and the lower part are respectively and fixedly provided with an annular electromagnet around the communication part of the decoupling channel.
Furthermore, a guide post is fixed between the upper part and the lower part in the decoupling channel, and the decoupling disc is assembled on the guide post in a sliding mode through a guide hole.
Furthermore, control system includes controller, controllable power, controllable switch, controllable power supplies power through controllable switch and annular electromagnet and is connected, amplitude detecting element is connected with controller signal transmission, and the controller is connected with controllable power, controllable switch control respectively.
Further, a first amplitude threshold value and a second amplitude threshold value are arranged inside the controller, wherein the second amplitude threshold value is smaller than the first amplitude threshold value; the controller compares the data collected by the amplitude detection unit with a first amplitude threshold and a second amplitude threshold respectively, wherein:
if the acquired data is smaller than or equal to the second amplitude threshold value, the controller controls the controllable switch to be switched off at the moment, so that the annular electromagnet does not generate magnetic attraction;
if the acquired data is smaller than the first amplitude threshold value and larger than the second amplitude threshold value, the controller controls the controllable switch to be switched on at the moment, and simultaneously controls the controllable power supply to output variable voltage or current, so that the annular electromagnet generates variable magnetic attraction to be applied to the decoupling disc;
if the acquired data is larger than or equal to the first amplitude threshold value, the controller controls the controllable switch to be switched on and simultaneously controls the controllable power supply to output fixed and unchangeable voltage or current, so that the annular electromagnet generates unchangeable magnetic attraction to adsorb and fix the decoupling disc.
In the decoupling channel, the electromagnet is fixed around the communication position of the communication port and the decoupling channel, the decoupling disk fixes the magnetic attraction body, the electromagnet generates magnetic attraction force capable of acting on the decoupling disk in a power-on state, and the motion state of the decoupling disk can be interfered through the magnetic attraction force.
Wherein, under high amplitude vibration, can make the electro-magnet produce the fixed decoupling zero dish of sufficient unchangeable magnetic attraction absorption to make the decoupling zero dish plug up and correspond the intercommunication mouth, make the decoupling zero passageway seal, from this under high amplitude vibration, hydraulic medium can't pass through the decoupling zero passageway, can only circulate upper and lower part in the shell through inertia passageway. By the mode, the damping effect during high-amplitude vibration can be improved.
Under low amplitude vibration, can make the electro-magnet produce the magnetic attraction of suitable change, make the decoupling zero dish be in under the extra stress state, exert extra up-and-down motion state to the decoupling zero dish through magnetic attraction, with the up-and-down motion state stack that the decoupling zero dish itself adaptation produced when receiving liquid pressure, can form the initiative interference to the decoupling zero dish from this, can promote the motion of decoupling zero dish under this interference, upper and lower part hydraulic pressure is balanced rapidly in making the shell, thereby has improved damping vibration attenuation effect.
Compared with the prior art, the invention has the advantages that: the damping vibration attenuation device is applied to the decoupling disc in a mode of generating electromagnetic force, and can interfere the motion state of the decoupling disc, so that the damping vibration attenuation effect of the hydraulic suspension during high-amplitude and low-amplitude vibration is improved.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a schematic block diagram of the control system of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in figure 1, the hydraulic suspension for the automobile engine comprises a shell 1, wherein a main rubber spring 2 is connected to the upper part of the shell 1. Wherein, the inner wall of the shell 1 is provided with an edge platform 3 corresponding to the bottom of the rubber main spring 2, a piezoelectric ceramic piece 4 is embedded and installed along the top surface of the edge platform 3, and the bottom of the rubber main spring 2 is fixed at the position of the piezoelectric ceramic piece 4 along the edge platform 3 corresponding to the position. When vibration occurs, the rubber main spring 2 is also pressed or stretched along the platform 3 of the shell 1, so that the piezoelectric ceramic piece 4 generates a corresponding electric signal, the magnitude of the electric signal is related to the amplitude, and the amplitude can be known through the electric signal generated by the piezoelectric ceramic piece 4. Thus, the piezoelectric ceramic sheet 4 functions as an amplitude detection unit.
Hydraulic oil is filled in the shell 1, an inertia channel body 5 is fixed in the shell 1, the inside of the shell 1 is divided into an upper part and a lower part by the inertia channel body 5, and a bottom membrane 6 which seals the bottom in the shell 1 is fixed in the shell 1 at the position below the inertia channel body 5. The inertia passage body 5 is provided with an inertia passage 14, and the inertia passage 14 is communicated with the upper part and the lower part in the shell 1.
The middle position of the inertia channel body 5 is provided with a decoupling channel 7, the top of the decoupling channel 7 is provided with an upper communicating port 8.1 used for communicating with the inner upper part of the shell, the bottom of the decoupling channel 7 is provided with a lower communicating port 8.2 used for communicating with the inner lower part of the shell, and the upper communicating port 8.1 and the lower communicating port 8.2 are respectively formed by a plurality of through holes. The decoupling channel 7 is internally provided with a decoupling disc 9, the decoupling disc 9 is horizontal, and a gap is reserved between the edge of the decoupling disc 9 and the inner wall of the decoupling channel 7. Hydraulic oil can thus flow between the upper and lower parts in the housing 1 via the upper and lower communication openings 8.1, 8.2 and the space between the decoupling disk 9 and the decoupling channel 7.
In the decoupling channel 7, an annular electromagnet 10 is fixed around the outside of the communication position of the integral communication port and the decoupling channel, the inner ring of the annular electromagnet 10 surrounds the outside of the communication position of the corresponding communication port, and one magnetic pole surface of the annular electromagnet 10 faces the decoupling disk 9. A plurality of through holes are arranged on the circumference of the decoupling disc 9 corresponding to the annular electromagnet 10, and a magnetic attraction body 11 is embedded and fixed in each through hole. When the annular electromagnet 10 is energized to generate magnetic attraction, each magnetic attraction body 11 can be magnetically attracted, so that the whole decoupling disc 9 is magnetically attracted.
In the invention, the annular electromagnet 10 can be only fixed outside the communication position of the upper communication port 8.1 and the decoupling channel in a surrounding manner, or can be only fixed outside the communication position of the lower communication port 8.2 and the decoupling channel in a surrounding manner. The invention can also be two annular electromagnets which are respectively fixed outside the communication position of the upper communication port 8.1 and the decoupling channel and outside the communication position of the lower communication port 8.2 and the decoupling channel in a surrounding manner. No matter where one or two annular electromagnets 10 are arranged, it is only necessary to ensure that each magnetic attraction body 11 of the decoupling disc 9 can be magnetically attracted.
In the invention, in order to ensure the stable up-and-down motion of the decoupling disc 9, a guide post 12 is fixed between the middle positions of the top and the bottom in the decoupling channel 7, and the decoupling disc 9 is slidably mounted on the guide post 12 through a central guide through hole. In order to ensure that the decoupling disc 9 cannot rotate, the cross section of the guide post 12 can be designed to be non-circular, and the central guide through hole of the decoupling disc 9 is designed to be a matched shape.
The invention further comprises a control system 13, which comprises a controller, a controllable power supply, a controllable switch, as shown in fig. 2. Wherein:
the controller can adopt the ECU of the automobile, and the annular electromagnet 10 adopts a direct current electromagnet, so that the controllable power supply adopts a controllable direct current power supply, and the controllable switch adopts a high-frequency switch.
The number of the controllable switches corresponds to that of the annular electromagnets 10, and the output ends of the controllable power supplies are connected to the annular electromagnets 10 in a one-to-one corresponding power supply mode through the controllable switches. The signal input end of the controller is connected with the piezoelectric ceramic piece 4, and the controller receives an electric signal generated by the piezoelectric ceramic piece 4. The signal output end of the controller is respectively connected with the control end of the controllable power supply and the control end of the controllable switch, and the controller controls the controllable power supply and the controllable switch to work.
In the invention, a first amplitude threshold value and a second amplitude threshold value smaller than the first amplitude threshold value are set in the controller through a program. When the controller receives the electric signal generated by the piezoelectric ceramic piece 4, the electric signal is converted into an amplitude value, and the amplitude value is compared with a first amplitude threshold value and a second amplitude threshold value respectively.
If the acquired amplitude value is smaller than or equal to the second amplitude threshold value, the hydraulic suspension is in a low-amplitude vibration state at the moment, the amplitude is small, and the hydraulic suspension can realize damping vibration reduction completely by means of adaptive up-and-down movement of the decoupling disc 9. At the moment, the controller controls the controllable switch to be switched off, so that the annular electromagnet 10 does not generate magnetic attraction, and damping vibration reduction is realized only by means of adaptive up-and-down motion of the decoupling disc 9 according to the working principle of the traditional hydraulic suspension.
If the acquired amplitude value is smaller than the first amplitude threshold value and larger than the second amplitude threshold value, the hydraulic suspension is in a low-amplitude vibration state at the moment, but the amplitude is increased. At the moment, the controller controls the controllable switch to be switched on, and simultaneously controls the controllable power supply to output changed voltage or current, so that the annular electromagnet 10 generates changed magnetic attraction force to be applied to the decoupling plate 9, and then the up-and-down movement of the decoupling plate 9 is interfered, and the up-and-down movement of the decoupling plate 9 is actively adjusted, so that the damping vibration reduction capacity is improved.
If the acquired amplitude value is larger than or equal to the first amplitude threshold value, the hydraulic suspension is in a high-amplitude vibration state at the moment. At the moment, the controller controls the controllable switch to be conducted, and simultaneously controls the controllable power supply to output a fixed and unchangeable large voltage or current, so that the annular electromagnet 10 generates a invariable large magnetic attraction force, the magnetic attraction force is larger than the maximum value of the difference between the upper part hydraulic pressure and the lower part hydraulic pressure in the shell 1 during theoretical high-amplitude vibration, when the decoupling disc 9 moves to the position of the annular electromagnet 10, the annular electromagnet 10 adsorbs and fixes the decoupling disc 9, and therefore the decoupling channel 7 is closed, hydraulic oil can only flow through the inertia channel 14, and therefore damping vibration reduction capacity is improved.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (7)
1. The utility model provides an automobile engine hydraulic pressure suspension, includes the rubber main spring that shell and shell upper portion are connected, fills in the shell to have hydraulic medium, and the shell internal fixation has inertia passageway body, separates the shell inside by inertia passageway body and divide into upper and lower two parts, the internal decoupling zero passageway that is equipped with of inertia passageway is equipped with the decoupling zero dish in the decoupling zero passageway, and upper and lower part of decoupling zero passageway corresponds and the shell in upper and lower part intercommunication through the intercommunication mouth respectively, and the internal inertia passageway that still is equipped with upper and lower two parts in the intercommunication shell of inertia passageway, its characterized in that: the decoupling device is characterized in that an amplitude detection unit is arranged at the joint of the shell and the rubber main spring, an annular electromagnet is fixed around the outer ring of the joint in the communicating port and the decoupling channel, one magnetic pole face of the annular electromagnet faces the decoupling disc, a magnetic attraction body is embedded and fixed in the position of the decoupling disc corresponding to the annular electromagnet, and the amplitude detection unit and the annular electromagnet are respectively electrically connected with a control system outside the shell.
2. The hydraulic mount of claim 1, wherein: the annular electromagnet is arranged outside the communication position of the upper communication port and the decoupling channel, and one magnetic pole surface of the annular electromagnet faces downwards to the decoupling disk.
3. The hydraulic mount of claim 1, wherein: the annular electromagnet is arranged outside the communication position of the lower communication port and the decoupling channel, and one magnetic pole face of the annular electromagnet faces upwards to the decoupling disk.
4. The hydraulic mount of claim 1, wherein: in the decoupling channel, the upper and lower communicating ports are respectively fixed with annular electromagnets around the communicating part of the decoupling channel.
5. The hydraulic mount of claim 1, wherein: and a guide post is fixed between the upper part and the lower part in the decoupling channel, and the decoupling disc is assembled on the guide post in a sliding manner through a guide hole.
6. The hydraulic mount of claim 1, wherein: the control system comprises a controller, a controllable power supply and a controllable switch, the controllable power supply is in power supply connection with the annular electromagnet through the controllable switch, the amplitude detection unit is in signal transmission connection with the controller, and the controller is in control connection with the controllable power supply and the controllable switch respectively.
7. The hydraulic mount of claim 1 or 6, wherein: a first amplitude threshold value and a second amplitude threshold value are arranged in the controller, wherein the second amplitude threshold value is smaller than the first amplitude threshold value; the controller compares the data collected by the amplitude detection unit with a first amplitude threshold and a second amplitude threshold respectively, wherein:
if the acquired data is smaller than or equal to the second amplitude threshold value, the controller controls the controllable switch to be switched off at the moment, so that the annular electromagnet does not generate magnetic attraction;
if the acquired data is smaller than the first amplitude threshold value and larger than the second amplitude threshold value, the controller controls the controllable switch to be switched on at the moment, and simultaneously controls the controllable power supply to output variable voltage or current, so that the annular electromagnet generates variable magnetic attraction to be applied to the decoupling disc;
if the acquired data is larger than or equal to the first amplitude threshold value, the controller controls the controllable switch to be switched on and simultaneously controls the controllable power supply to output fixed and unchangeable voltage or current, so that the annular electromagnet generates unchangeable magnetic attraction to adsorb and fix the decoupling disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110750616.0A CN113446347B (en) | 2021-07-02 | Hydraulic suspension of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110750616.0A CN113446347B (en) | 2021-07-02 | Hydraulic suspension of automobile engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113446347A true CN113446347A (en) | 2021-09-28 |
| CN113446347B CN113446347B (en) | 2024-05-14 |
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| Title |
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