CN108843722B - Electrically controlled variable throttle hole type semi-active suspension - Google Patents
Electrically controlled variable throttle hole type semi-active suspension Download PDFInfo
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- CN108843722B CN108843722B CN201810859495.1A CN201810859495A CN108843722B CN 108843722 B CN108843722 B CN 108843722B CN 201810859495 A CN201810859495 A CN 201810859495A CN 108843722 B CN108843722 B CN 108843722B
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- 239000000725 suspension Substances 0.000 title claims abstract description 179
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 65
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- F16F13/26—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to an electric control variable throttle hole type semi-active suspension which comprises a suspension upper shell, a suspension lower bracket suspension inner core, a rubber main spring base, an inertia channel upper shell, a rubber decoupling film, an inertia channel lower shell, a rubber cup, a suspension base and an electric control device, wherein the suspension upper shell is provided with a plurality of grooves; the rubber main spring, the rubber main spring base and the suspension inner core are vulcanized into a whole, and the middle positions of the inertia passage upper shell and the inertia passage lower shell are formed into orifices after welding; an annular groove is formed between the upper shell of the inertia passage and the lower shell of the inertia passage in a sealing way, the rubber decoupling film is suspended in the annular groove, and an electric control device is arranged on the suspension base. The invention has simple process, low energy consumption and long service life, and optimizes the vibration isolation performance of the engine in idle speed by controlling the switching of the opening/closing state of the throttle orifice through the electric control device.
Description
Technical Field
The invention relates to the technical field of automobile part suspension, in particular to an electric control variable throttle hole type semi-active suspension for improving vibration of an automobile engine in idle working conditions.
Background
With the rapid development of automobile technology, low cost, light weight, energy conservation and environmental protection are already a trend of modern automobile development, and the requirements of consumers on various aspects of automobile performance are also higher and higher, especially on automobile riding comfort, the comfort is closely related to the NVH (Noise vibration and harshness) performance of the automobile, and the design quality of an automobile suspension system is crucial to the NVH performance of the whole automobile. The engine is used as an important vibration source of the whole vehicle, is one of the most important systems for influencing riding comfort of the whole vehicle, and transmits vibration to the vehicle body or the vehicle frame through a suspension system connected with the engine, so that the vibration transmitted to the vehicle body or the vehicle frame by the power assembly is effectively isolated or reduced to the maximum extent, and the vibration is particularly critical to optimizing NVH performance of the whole vehicle. The suspension system is an important element for effectively isolating or reducing vibration transmitted by the power assembly, and the quality of vibration isolation performance directly influences the quality of NVH performance of the whole vehicle, so that the riding comfort of the vehicle is influenced, and the normal operation of parts and the service life of the parts are also influenced.
After the engine is started, the engine is in an idle operating state, such as immediately after the engine is started, warmed up, or while waiting for a traffic light, etc., before the vehicle starts. The process is a working condition of driving the automobile frequently, and because the automobile is in a static state in the process, the external environment is relatively quiet, so that the overall noise amplitude in the automobile is lower. If the vibration of the powertrain is not effectively isolated or damped at the idling time of the engine, vibration and noise of other parts of the vehicle body, such as vibration of a seat and a steering wheel, vibration noise of other parts of the vehicle body, etc., may be caused, and a driver may feel very sensitive at the first time, seriously affecting the riding comfort of the driver. Thus, idle operation is an important operation of the vehicle, and idle vibration and noise are important NVH phenomena of the vehicle.
In order to effectively isolate or reduce vibrations transmitted by the vehicle powertrain to the vehicle body or frame, a suspension system is provided between the vehicle powertrain and the vehicle body. From the perspective of the power assembly, the engine can generate reciprocating unbalanced inertial force and moment fluctuation when working under the idle working condition or other driving working conditions, and the unbalanced inertial force and moment fluctuation caused by the structure of the engine is the main vibration source of the suspension system, and the power assembly and the suspension system form a vibration isolator to effectively isolate the vibration transmitted to the vehicle body by the power assembly. If the vibration of the powertrain is not effectively isolated, it is transferred to various parts of the vehicle, causing vibration of other parts, and also generating noise, affecting the hearing and comfort of the driver and passengers. Meanwhile, for the whole vehicle, the power assembly and the suspension system are equivalent to a dynamic vibration absorber, and the influence of vibration excitation caused by uneven pavement on the power assembly, the vehicle body floor and nearby structures is relieved. Therefore, it is important to design the suspension system reasonably to effectively isolate vibrations generated by the powertrain and impacts caused by road surface irregularities.
With the deep development of automobile light-weight technology, the vibration of the power assembly is more remarkable, and the NVH performance of the automobile is deteriorated. Firstly, the traditional rubber suspension and the hydraulic suspension are not adjustable and controllable due to the limitations of the performances of the traditional rubber suspension and the hydraulic suspension (once the traditional rubber suspension and the hydraulic suspension are designed, the characteristics such as structural parameters, dynamic stiffness, damping and the like and amplitude-frequency characteristics of the traditional rubber suspension and the hydraulic suspension are also determined, the traditional rubber suspension and the hydraulic suspension cannot be correspondingly adjusted due to the changes of the performances of a power assembly and the driving working conditions of an automobile, the traditional rubber suspension and the hydraulic suspension cannot be effectively adapted to the requirements of the automobile on complex working conditions), and the requirements of consumers on vibration reduction, noise reduction and riding comfort of the automobile cannot be met. In addition, in the conventional hydraulic suspension characteristics, large damping at low frequency is generally used by engineers to solve the vibration under the condition of jolt running with large amplitude of about 10Hz, however, due to structural relation, the dynamic stiffness of high frequency is difficult to be reduced, and especially, low dynamic stiffness is required to improve the vibration isolation effect under the idle condition. The semi-active suspension can adjust the internal parameters of the semi-active suspension in a wide frequency range according to the actual working condition of the automobile to improve the dynamic characteristics of the semi-active suspension, so that the vibration isolation and noise reduction performances of the automobile are improved, and the riding comfort is improved. The semi-active suspension is developed based on the traditional hydraulic suspension, has the advantages of being low in cost, good in reliability and stability compared with the active suspension, good in vibration isolation and noise reduction performance compared with the traditional hydraulic suspension, and the like, is always focused on, and is also adopted by a plurality of advanced automobiles to improve the NVH performance of the whole automobile.
The semi-active suspension has advantages in improving vibration isolation, noise reduction and riding comfort of the whole vehicle, and various semi-active suspensions are also appeared in the automobile market, and can be roughly classified into two types. One type is to adjust the dynamic characteristics of semi-active suspensions, such as electrorheological and magnetorheological type semi-active suspensions, by changing the damping characteristics of the liquid in the liquid cavity. The other is to adjust the dynamic performance of the semi-active suspension by changing the internal structural parameters of the suspension, such as the sectional area of the inertia channel and the stiffness of the decoupling film. Although the semi-active suspensions have a role in improving vibration isolation, noise reduction and riding comfort of automobiles, the semi-active suspensions have a complex structure and high price, so that the semi-active suspensions have an insufficient application prospect.
Disclosure of Invention
The invention aims to overcome the defects and provide the electric control variable throttle hole type semi-active suspension which has the advantages of simple and reliable structure, simple process, low energy consumption and long service life, and vibration isolation performance of an engine is optimized when the engine is idling by controlling the switching of the closed state of a throttle hole through an electric control device.
The purpose of the invention is realized in the following way:
an electric control variable throttle hole type semi-active suspension comprises a suspension upper shell, a suspension lower support, a suspension inner core, a rubber main spring base, an inertia channel upper shell, a rubber decoupling film, an inertia channel lower shell, a rubber cup, a suspension base, an electric control device and ethylene glycol liquid filled in an upper liquid chamber and a lower liquid chamber; the rubber main spring, the rubber main spring base and the suspension inner core are vulcanized into a whole, and the rubber main spring, the rubber main spring base and the suspension inner core are assembled in a riveting manner through the suspension upper shell and the suspension lower support; the inertia channel is formed by sealing an upper inertia channel shell and a lower inertia channel shell, and the middle positions of the upper inertia channel shell and the lower inertia channel shell after welding form an orifice; an annular groove is formed between the upper shell of the inertia passage and the lower shell of the inertia passage in a sealing way, and the rubber decoupling film is suspended in the annular groove; the rubber decoupling film and the inertia channel lower shell form a rubber cup under the effect of riveting assembly, the rubber main spring, the inertia channel upper shell and the decoupling film form a suspension upper liquid chamber, the inertia channel lower shell, the rubber decoupling film and the rubber cup form a suspension lower liquid chamber, the upper liquid chamber and the lower liquid chamber are communicated through the inertia channel, the rubber decoupling film and the orifice, and the upper liquid chamber and the lower liquid chamber are filled with glycol liquid in a vacuum state; the suspension base is arranged on the suspension lower support, an electric control device is arranged on the suspension base and comprises an electric control power device, an electric control movable push rod, a rubber cap and a wire harness.
An electric control variable throttle hole type semi-active suspension is provided with an opening at the middle part of an upper shell of the suspension, and is used for assembling and connecting a power assembly side suspension bracket arm of a suspension inner core; the inner surface of the bottom position of the suspension upper shell is provided with an annular upper boss and an annular lower boss for assembling and positioning the rubber main spring base, and the rubber main spring base is provided with an annular upper boss matched with the annular upper boss of the suspension upper shell and an annular lower boss matched with the annular lower boss of the suspension upper shell.
An automatically controlled variable throttle hole formula semi-initiative suspension, the suspension lower carriage is provided with lower carriage annular boss for the assembly location suspension base, be equipped with the rubber cup in the suspension base.
An electric control variable throttle hole type semi-active suspension is characterized in that a plurality of small holes are formed in an upper inertia channel shell and a lower inertia channel shell, wherein the upper inertia channel shell and the lower inertia channel shell are opposite to each other, and the small holes are formed in the upper inertia channel shell and the lower inertia channel shell.
The utility model provides an automatically controlled variable throttle hole formula semi-initiative suspension, rubber lip and rubber lip under the rubber main spring in rubber main spring is equipped with rubber main spring on the rubber main spring bottom, rubber lip forms upper annular seal contact surface on the rubber main spring together with the inertia passageway upper housing outer lane step of inertia passageway upper housing, and the inertia passageway lower housing upper portion outer lane step of inertia passageway lower housing forms middle level annular seal contact surface with rubber lip extrusion in the rubber main spring, and rubber lip forms lower floor annular seal contact surface under the rubber main spring and the inertia passageway lower housing upper portion outer lane of inertia passageway lower housing of rubber main spring.
An electric control variable throttle hole type semi-active suspension is arranged on a suspension base, an annular groove of an outer ring of the suspension base is formed in the suspension base, a rubber cup rubber lip is arranged on a rubber cup, and the rubber cup rubber lip and the annular groove of the outer ring of the suspension base jointly form an inner-outer double-layer annular sealing contact surface.
An electrically-controlled variable throttle hole type semi-active suspension is characterized in that an upper suspension shell and a lower suspension support are connected with a vehicle body through bolts.
The electrically controlled variable throttle semi-active suspension comprises an upper shell of an inertia passage and a lower shell of the inertia passage, wherein the upper shell and the lower shell of the inertia passage are both made of modified plastics through injection molding, a rubber decoupling film, a rubber cup and a rubber cap are all made of rubber through vulcanization, and the upper shell, the lower support, the rubber main spring base and the inner core of the suspension are all made of aluminum alloy through casting.
An electronic control variable throttle hole type semi-active suspension is characterized in that at least one circle of small square holes or small round holes are formed in an upper inertia channel shell and a lower inertia channel shell, wherein the upper inertia channel shell and the lower inertia channel shell are opposite to each other, and the annular grooves are opposite to each other.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple and reliable structure, simple process, low cost, low energy consumption and long service life, optimizes the vibration isolation performance of the engine during idling by controlling the switching of the opening/closing state of the throttle orifice through the electric control device, increases the characteristic of low dynamic stiffness of the automobile under the idling working condition on the basis of the original traditional hydraulic suspension, and can greatly improve the vibration isolation effect of the vibration noise of the whole automobile under the idling state.
Drawings
FIG. 1 is a schematic cross-sectional view of the structure of the present invention.
FIG. 2 is a partial cross-sectional view of the bottom of the rubber main spring of the present invention.
FIG. 3 shows a flow path assembly comprising upper and lower inertial pass shells according to the present invention.
FIG. 4 is a cross-sectional view of a flow path assembly formed by upper and lower shells of an inertial path according to the present invention.
Fig. 5 is a partial cross-sectional view of the bottom of the suspended upper housing of the present invention.
Fig. 6 is a partial cross-sectional view of the lower portion of the suspension of the present invention.
Wherein:
the suspension upper shell 1, the suspension upper shell annular upper boss 1a, the suspension upper shell annular lower boss 1b, the suspension inner core 2, the rubber main spring 3, the rubber main spring upper rubber lip 3a, the rubber main spring middle rubber lip 3b, the rubber main spring lower rubber lip 3c, the rubber main spring base 4, the annular assembly lower boss 4a, the annular assembly upper boss 4b, the inertia passage upper shell 5, the inertia passage upper shell outer ring step 5a, the inertia passage lower shell 6, the inertia passage lower shell upper outer ring upper step 6a, the inertia passage lower shell upper outer ring lower step 6b, the inertia passage lower shell outer ring boss 6c, the rubber decoupling film 7, the rubber cup 8, the rubber cup rubber lip 8a, the suspension base 9, the suspension base outer ring annular groove 9a, the suspension electric control device 10, the electric control movable push rod 10a, the rubber cap 10b, the upper liquid chamber 11, the lower liquid chamber 12, the orifice 13, the inertia passage 14, the annular groove 15, the upper annular seal contact surface 16, the middle annular seal contact surface 17, the lower annular seal contact surface 18, the inner and outer ring 19, the lower annular support 20a, and the suspension lower annular support 20a.
Detailed Description
Example 1:
referring to fig. 1, the invention relates to an electrically controlled variable orifice type semi-active suspension, which comprises a suspension upper shell 1, a suspension lower support 20, a suspension inner core 2, a rubber main spring 3, a rubber main spring base 4, an inertia channel 14, an inertia channel upper shell 5, a rubber decoupling film 7, an inertia channel lower shell 6, a rubber cup 8, a suspension base 9, an electric control device 10, an upper liquid chamber 11, a lower liquid chamber 12 and glycol liquid filled in the upper liquid chamber 11 and the lower liquid chamber 12.
An opening is formed in the middle of the suspension upper shell 1 and used for assembling and connecting a power assembly side suspension bracket arm of the suspension inner core 2; the inner surface of the bottom position of the suspension upper shell 1 is provided with an annular upper boss 1a and an annular lower boss 1b for assembling and positioning a rubber main spring base 4, and the rubber main spring base 4 is provided with an annular rubber main spring base assembling upper boss 4b matched with the suspension upper shell annular upper boss 1a and an annular rubber main spring base assembling lower boss 4a matched with the suspension upper shell annular lower boss 1 b; the suspension lower bracket 20 is provided with a lower bracket annular boss 20a for assembling and positioning the suspension base 9; the suspension upper shell 1 and the suspension lower bracket 20 are both cast by aluminum alloy; the plastic-covered suspension inner core 2 and the rubber main spring base 4 are vulcanized with the rubber main spring 3 into a whole through a vulcanization process.
The inertia passage 14 is formed by sealing an upper inertia passage housing 5 and a lower inertia passage housing 6 which are welded by ultrasonic waves; after ultrasonic welding, the upper shell 5 and the lower shell 6 of the inertia passage form a through hole which penetrates up and down, the through hole is an orifice 13, and the electric control device controls the opening and closing states of the orifice according to different working states of the engine to adjust the volume rigidity of the upper liquid chamber and the lower liquid chamber of the suspension, so that the dynamic rigidity of the suspension is improved, and the suspension can achieve better vibration isolation and noise reduction performance than the traditional hydraulic suspension.
An annular groove 15 is formed between the upper inertia passage shell 5 and the lower inertia passage shell 6 in a sealing manner, the rubber decoupling film 7 is suspended in the annular groove 15, and a plurality of small holes are formed in the upper and lower inertia passage shells opposite to the annular groove 15, so that liquid in the upper and lower liquid chambers can flow through gaps of the rubber decoupling film 7 at high frequency.
The electric control device 10 for controlling the suspension state is arranged on the suspension base 9, the electric control device 10 comprises an electric control power device, an electric control movable push rod 10a, a push rod head rubber cap 10b and a wire harness which accords with the safety standard of an automobile, and the electric control movable push rod 10a can axially move and is used for controlling the switching of the opening and closing states of the throttle holes. The rubber cup 8 is assembled in the suspension base 9, and the concave cavity of the suspension base 9 is fully considered to be capable of accommodating the rubber cup 8, so that the elastic deformation is achieved under the limit working condition.
The liquid feeding chamber 11 is semi-actively suspended and consists of a rubber main spring 3, an inertial channel upper shell 5 and a decoupling film 7, wherein a rubber main spring upper rubber lip 3a, a rubber main spring middle rubber lip 3b and a rubber main spring lower rubber lip 3c are arranged at the bottom of the rubber main spring 3, the tightness of the inertial channel upper shell 5 and the periphery of the bottom of the rubber main spring 3 is ensured by the extrusion deformation of the rubber main spring upper rubber lip 3a, the rubber main spring middle rubber lip 3b and the rubber main spring lower rubber lip 3c, and the rubber main spring base 4 is extruded under the action of the assembly force of the suspended upper shell 1 and the suspended lower support 20 during riveting assembly, so that one circle of rubber lip around the bottom of the rubber main spring 3 is extruded and deformed, and the sealing effect is achieved.
The rubber main spring upper rubber lip 3a and the inertia passage upper housing outer ring step 5a of the inertia passage upper housing 5 form an upper annular sealing contact surface 16, the inertia passage lower housing upper outer ring upper step 6a of the inertia passage lower housing 6 and the rubber main spring middle rubber lip 3b are extruded to form a middle annular sealing contact surface 17, and the rubber main spring lower rubber lip 3c of the rubber main spring 3 and the inertia passage lower housing upper outer ring lower step 6b of the inertia passage lower housing 6 form a lower annular sealing contact surface 18, so that the outer ring sealing performance of the upper liquid chamber 11 is ensured under the joint sealing action of the 3 annular sealing contact surfaces 16, 17 and 18.
The lower liquid chamber 12 of suspension is constituteed jointly to casing 6, rubber decoupling film 7 and rubber cup 8 under the inertia passageway, the protruding 6c of casing lower part outer lane under the inertia passageway of casing 6 and rubber cup rubber lip 8a of rubber cup 8 under the inertia passageway, under the extrusion effect that receives the fitting force, can be extruded into the suspension base outer lane ring channel 9a of suspension base 9, forms inside and outside double-deck annular seal contact surface 19 jointly with suspension base outer lane ring channel 9a, under the sealing effect of inside and outside double-deck annular seal circle 19, has guaranteed the leakproofness of liquid chamber 12 down.
The upper liquid chamber 11 and the lower liquid chamber 12 are filled with ethylene glycol liquid in a state of being vacuumized by a vacuumizer.
The suspension upper shell 1 and the suspension lower bracket 20 are connected with the vehicle body through bolts, so that suspension assembly failure caused by riveting failure is prevented, and the assembly state of the suspension on the whole vehicle is ensured; the semi-active suspension has the advantages of compact and simple structure, convenient assembly, long service life, good vibration isolation performance, low energy consumption and high cost performance.
The upper liquid chamber 11 and the lower liquid chamber 12 are communicated by an inertia passage 14, a rubber decoupling film 7 and an orifice 13. When the liquid in the upper and lower liquid chambers is excited at low frequency and large amplitude in a state that the throttle hole 13 is closed, the rubber decoupling film 7 is tightly attached to the inner surface of the annular groove 15 due to the pressure difference between the upper and lower liquid chambers, so that the liquid can flow from the gap of the rubber decoupling film 7, and at the moment, the liquid can only flow from the inertia passage 14. The viscosity of the liquid and the along-path energy loss in the flowing process lead the suspension to generate a large damping effect and attenuate large-amplitude vibration, and the working principle of the suspension is the same as that of the common decoupling film type hydraulic suspension in the state. When the throttle hole 13 is in an open state, the liquid flow resistance is reduced, liquid can flow between the inertia channel 14 and the throttle hole 13 rapidly, the flow resistance of the liquid in the upper liquid chamber and the lower liquid chamber is reduced, and the volume rigidity of the upper liquid chamber and the lower liquid chamber of the suspension is reduced, so that the dynamic rigidity of the suspension is reduced, the vibration of the engine in an idle state is attenuated, and the dynamic rigidity performance of the suspension is optimized.
According to the change of the running condition (vehicle speed), the semi-active suspension dynamic performance is controlled by the electric control device 10, the suspension dynamic performance is adjusted by the opening and closing state of the throttle hole 13 controlled by the electric control device 10, and the opening and closing state of the throttle hole 13 is controlled by the telescopic state of the electric control movable push rod 10a of the electric control device. When the engine is in an idle state after ignition, the electric control device works under the instruction of the ECU, the electromagnetic valve current is disconnected, the electric control movable push rod 10a is contracted back under the natural state due to the tensile force of the pre-tightening spring, so that the cup bulge jacked by the head of the electric control movable push rod 10a is separated from the throttle hole 13, the throttle hole 13 is in an open state, liquid can flow from the inertia channel 14 and the throttle hole 13, the pressure difference between the upper liquid chamber and the lower liquid chamber of the semi-active suspension is reduced, and the suspension dynamic stiffness is reduced; when the driving state of the automobile changes, the ECU transmits a relevant power-on instruction, the electric control device 10 is driven to push out the electric control movable push rod 10a under the action of electromagnetic force, the electric control movable push rod 10a jacks up the middle position of the rubber cup, the rubber bulge is extruded by the electric control movable push rod 10a to block the throttle hole 13, at the moment, the flow channel of liquid suspending the upper liquid chamber and the lower liquid chamber is prolonged, and the damping is increased, so that the damping characteristic of the suspension is increased, and the vibration with large amplitude is attenuated. In the closed state of the orifice 13, the functions of the type of suspension are the same as those of a common hydraulic suspension, namely under the high-frequency excitation, the liquid in the upper liquid chamber and the lower liquid chamber can flow only from the gaps around the rubber decoupling film 7 because the liquid in the inertial channel 14 does not flow so much, so that the effects of vibration isolation and noise reduction are achieved well.
The foregoing is merely a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the invention.
Claims (7)
1. The electric control variable throttle hole type semi-active suspension is characterized by comprising an upper suspension shell (1), a lower suspension support (20), an inner suspension core (2), a rubber main spring (3), a rubber main spring base (4), an inertia channel (14), an upper inertia channel shell (5), a rubber decoupling film (7), a lower inertia channel shell (6), a rubber cup (8), a suspension base (9), an electric control device (10) and glycol liquid filled in an upper liquid chamber (11) and a lower liquid chamber (12); the rubber main spring (3), the rubber main spring base (4) and the suspension inner core (2) are vulcanized into a whole, and the rubber main spring is assembled by riveting the suspension upper shell (1) and the suspension lower support (20); the inertia passage (14) is formed by sealing an upper inertia passage shell (5) and a lower inertia passage shell (6), and an orifice (13) is formed in the middle position of the upper inertia passage shell (5) and the lower inertia passage shell (6) after welding; an annular groove (15) is formed between the upper shell (5) of the inertia passage and the lower shell (6) of the inertia passage in a sealing way, and the rubber decoupling film (7) is suspended in the annular groove (15); the device comprises a rubber main spring (3), an inertia channel upper shell (5) and a decoupling film (7), wherein the inertia channel lower shell (6), the rubber decoupling film (7) and a rubber cup (8) form a suspended upper liquid chamber (11), a suspended lower liquid chamber (12) is formed between the upper liquid chamber (11) and the lower liquid chamber (12), the inertia channel (14), the rubber decoupling film (7) and an orifice (13) are communicated, and the upper liquid chamber (11) and the lower liquid chamber (12) are filled with glycol liquid in a vacuum state; the suspension base (9) is arranged on the suspension lower bracket (20), an electric control device (10) is arranged on the suspension base (9), and the electric control device (10) comprises an electric control power device, an electric control movable push rod (10 a), a rubber cap (10 b) and a wire harness;
an opening is formed in the middle of the suspension upper shell (1) and used for assembling and connecting a power assembly side suspension bracket arm of the suspension inner core (2); the inner surface of the bottom position of the suspension upper shell (1) is provided with an annular upper boss (1 a) and an annular lower boss (1 b) which are used for assembling and positioning a rubber main spring base (4), and the rubber main spring base (4) is provided with an annular upper rubber main spring base assembling boss (4 b) matched with the annular upper boss (1 a) of the suspension upper shell and an annular lower rubber main spring base assembling boss (4 a) matched with the annular lower boss (1 b) of the suspension upper shell;
rubber main spring (3) bottom is equipped with rubber main spring on-rubber lip (3 a), rubber main spring in-rubber lip (3 b) and rubber main spring under-rubber lip (3 c), rubber main spring on-rubber lip (3 a) forms upper annular seal contact surface (16) with inertia passageway on-housing outer lane step (5 a) of inertia passageway on-housing (5), and inertia passageway under-housing upper portion outer lane step (6 a) of inertia passageway under-housing (6) extrudees with rubber main spring in-rubber lip (3 b) and forms middle level annular seal contact surface (17), rubber main spring under-rubber lip (3 c) of rubber main spring (3) and inertia passageway under-housing upper portion outer lane step (6 b) of inertia passageway under-housing (6) form lower floor annular seal contact surface (18).
2. The electrically controlled variable orifice semi-active suspension of claim 1, wherein: the suspension lower support (20) is provided with a lower support annular boss (20 a) and is used for assembling and positioning a suspension base (9), and a rubber cup (8) is arranged in the suspension base (9).
3. The electrically controlled variable orifice semi-active suspension of claim 1, wherein: and a plurality of small holes are arranged on the upper inertia passage shell and the lower inertia passage shell which are opposite to the annular groove (15).
4. The electrically controlled variable orifice semi-active suspension of claim 1, wherein: the novel suspension base is characterized in that a suspension base outer ring annular groove (9 a) is formed in the suspension base (9), a rubber cup rubber lip (8 a) is arranged on the rubber cup (8), and the rubber cup rubber lip (8 a) and the suspension base outer ring annular groove (9 a) form an inner-outer double-layer annular sealing contact surface (19) together.
5. The electrically controlled variable orifice semi-active suspension of claim 1, wherein: the suspension upper shell (1) and the suspension lower bracket (20) are connected with the vehicle body through bolts.
6. The electrically controlled variable orifice semi-active suspension of claim 1, wherein: the upper shell (5) of the inertia passage and the lower shell (6) of the inertia passage are both made of modified plastics through injection molding, the rubber decoupling film (7), the rubber cup (8) and the rubber cap (10 b) are both made of rubber through vulcanization, and the upper suspension shell (1), the lower suspension bracket (20), the rubber main spring base (4) and the suspension inner core (2) are all made of aluminum alloy through casting.
7. The electrically controlled variable orifice semi-active suspension of claim 3 wherein: the upper and lower inertia passage shells opposite to the annular groove (15) are provided with at least one circle of small square holes or small round holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859495.1A CN108843722B (en) | 2018-08-01 | 2018-08-01 | Electrically controlled variable throttle hole type semi-active suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810859495.1A CN108843722B (en) | 2018-08-01 | 2018-08-01 | Electrically controlled variable throttle hole type semi-active suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108843722A CN108843722A (en) | 2018-11-20 |
| CN108843722B true CN108843722B (en) | 2024-02-23 |
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| CN201810859495.1A Active CN108843722B (en) | 2018-08-01 | 2018-08-01 | Electrically controlled variable throttle hole type semi-active suspension |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112140866B (en) * | 2019-06-28 | 2023-01-06 | 比亚迪股份有限公司 | Suspension structure, suspension control method, suspension controller and vehicle |
| CN114312280B (en) * | 2021-12-29 | 2023-06-02 | 江苏徐工工程机械研究院有限公司 | Semi-active suspension with adjustable dynamic stiffness and damping value and control system thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106627A (en) * | 2000-09-26 | 2002-04-10 | Yamashita Rubber Co Ltd | Power unit support device |
| CN1715704A (en) * | 2004-06-30 | 2006-01-04 | 东海橡胶工业株式会社 | Fluid-filled active damping apparatus |
| CN105020327A (en) * | 2015-06-30 | 2015-11-04 | 重庆长安汽车股份有限公司 | Air spring type semi-active engine mount |
| CN208749912U (en) * | 2018-08-01 | 2019-04-16 | 江阴海达橡塑股份有限公司 | Automatically controlled variable restrictor cellular type Semi-active mount |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002106627A (en) * | 2000-09-26 | 2002-04-10 | Yamashita Rubber Co Ltd | Power unit support device |
| CN1715704A (en) * | 2004-06-30 | 2006-01-04 | 东海橡胶工业株式会社 | Fluid-filled active damping apparatus |
| CN105020327A (en) * | 2015-06-30 | 2015-11-04 | 重庆长安汽车股份有限公司 | Air spring type semi-active engine mount |
| CN208749912U (en) * | 2018-08-01 | 2019-04-16 | 江阴海达橡塑股份有限公司 | Automatically controlled variable restrictor cellular type Semi-active mount |
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| CN108843722A (en) | 2018-11-20 |
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