CN110067682B - Variable intake manifold device based on negative Poisson ratio structure - Google Patents
Variable intake manifold device based on negative Poisson ratio structure Download PDFInfo
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- CN110067682B CN110067682B CN201910383802.8A CN201910383802A CN110067682B CN 110067682 B CN110067682 B CN 110067682B CN 201910383802 A CN201910383802 A CN 201910383802A CN 110067682 B CN110067682 B CN 110067682B
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- negative poisson
- intake manifold
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
The invention discloses a variable intake manifold device based on a negative Poisson ratio structure, which comprises an intake sleeve, an air guide boss, an actuator and a transmission system, wherein a round hole is drilled on the wall of the intake sleeve and is used for connecting the transmission system; the invention can adjust the air inlet section along with different rotating speeds of the engine by using the pulling (pressing) expansion (contraction) characteristic of the negative Poisson ratio material, and can complete the effect of continuously changing air inlet in a certain range. The negative Poisson ratio variable intake manifold device has a simple mechanism, reduces the overall weight of an engine intake system, improves the combustion efficiency of the engine at different rotating speeds, improves the performance of the engine, and is suitable for the automobile engine to work under different working conditions.
Description
Technical Field
The invention belongs to the technical field of automobile parts, and particularly relates to a variable intake manifold device based on a negative Poisson ratio structure.
Background
With the continuous development of automotive technology, more and more advanced technologies are applied to engines, including the application of variable-length intake manifolds. The structural parameters of an air inlet manifold of a traditional engine are fixed and unchanged, so that the performance of the engine under various working conditions cannot be better, and in order to improve the performance of the engine, the structure of the air inlet manifold needs to be changed along with the rotating speed and the load.
Compared with the traditional fixed-length intake manifold, the variable intake manifold can change the length or the section area of the intake manifold through the current operating working condition, improves the combustion efficiency, improves the performance of the engine, and is an effective way for improving the fuel economy and the dynamic property of the engine. The automobile mainly uses an air inlet manifold with variable length and variable cross-sectional area, wherein the integral structure is complex, the air inlet manifold is heavy and cannot realize continuous variable air inlet, and the development of the automobile industry is limited to a certain extent.
The negative poisson ratio material and structure studied at home and abroad at present have special mechanical properties, and can realize transverse contraction (expansion) under the action of uniaxial pressure (tension). Compared with the traditional material, the material has more advantages in the aspects of shear-resistant bearing capacity, fracture resistance, energy absorption and consumption capacity, indentation resistance and the like, can replace some complex mechanisms, and greatly simplifies the whole structure.
Therefore, in an engine intake system, there is a demand for a variable intake manifold device that has a simple and reliable structure, is easy to control, and can continuously control and change intake air, in order to achieve the goals of light weight and continuous variability.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a variable intake manifold device based on a negative Poisson ratio structure, which effectively realizes the change of an intake section by using the characteristics of a negative Poisson ratio material, completes the continuous variable intake, improves the combustion efficiency, improves the performance of an engine and is suitable for the working of an automobile engine under different working conditions.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a variable intake manifold device based on a negative Poisson ratio structure, which comprises an intake sleeve, an air guide boss, an actuator and a transmission system, wherein a round hole is drilled on the wall of the intake sleeve and is used for connecting the transmission system;
the actuator comprises a shell, a negative poisson ratio material strip, an elastic outer ring and an auxiliary mechanism, wherein the shell comprises a bottom plate, a top cover and a U-shaped connecting strip for connecting the bottom plate and the top cover, the bottom plate is fixed on the section of the air guide boss, the U-shaped connecting strip comprises an upper connecting strip and a lower connecting strip, the upper connecting strip and the lower connecting strip are respectively fixedly connected with the upper end and the lower end of the bottom plate and the top cover, the sections of the U-shaped connecting strips are in two U shapes, the openings of the U-shaped connecting strips are opposite, the U-shaped connecting strips are used for clamping the negative poisson ratio material strip, and; the negative Poisson ratio material strip is formed by combining a plurality of unit bodies with negative Poisson ratio attributes, the upper end surface of each unit body is provided with a protrusion to be fixed in the middle of a U-shaped connecting strip, the lower end surface of each unit body is connected with the transmission system, the left side surface and the right side surface of each unit body are clamped by the U-shaped connecting strips, and gaps are reserved between the bottom surface and the bottom plate and between the top surface and the top cover of the negative Poisson ratio material strip, so that the negative Poisson ratio material strip cannot impact the bottom plate and the top cover when; the elastic outer ring is made of elastic materials, the upper end and the lower end of the elastic outer ring are respectively connected and fixed on the outer side surfaces of the upper connecting strip and the lower connecting strip, and the top part and the bottom part of the elastic outer ring are respectively fixedly connected on the arc side surfaces of the top cover and the bottom plate; the auxiliary mechanism comprises a left connecting rod group and a right connecting rod group which are symmetrically distributed in the left-right direction;
the transmission system comprises a driving module, a push rod and a sealing shaft sleeve, wherein the driving module is installed on the outer side of the air inlet sleeve, one end of the push rod is connected with the lower end face of the negative Poisson's ratio material strip, the other end of the push rod is connected with the output end of the driving module, the sealing shaft sleeve comprises two identical shaft sleeves which are respectively installed on a circular hole of a pipe wall of the air inlet sleeve and a circular hole of a lower connecting strip, and the side face of the push rod is sleeved in the two sealing shaft sleeves when the push rod is connected, and the lower connecting strip and the air.
Furthermore, the whole structure of the air inlet sleeve is a section of thick-wall pipeline, and the front port and the rear port can be matched with an air inlet manifold of an automobile engine for installation.
Furthermore, the air inlet end of the air inlet sleeve is the end opposite to the air guide boss ramp.
Furthermore, the end face of the air guide boss is a circular section, and the surface of the ramp is a smooth arc-shaped surface.
Furthermore, the cross section of the bottom plate is in a circular shape consistent with the end face of the ramp of the air guide boss, and outward extending bulges are added at the upper end and the lower end of the bottom plate and are used for connecting and fixing the U-shaped connecting strip; the top cover is consistent with the bottom plate in shape and is distributed in an up-and-down symmetrical mode.
Further, the negative poisson ratio material strip is a cuboid, a connecting seat is fixed in the middle of the side face of the negative poisson ratio material strip, the connecting seat is provided with a fixing rod, and the connecting seat can be connected with the fine holes in one ends of the upper connecting rod, the middle connecting rod and the lower connecting rod to form a rotating pair.
Furthermore, the left connecting rod group and the right connecting rod group respectively comprise an upper connecting rod, a middle connecting rod and a lower connecting rod, one ends of the upper connecting rod, the middle connecting rod and the lower connecting rod are connected, a connecting point is fixed in the middle of the side face of the negative poisson ratio material strip, a certain included angle is formed between the connecting rods, the connecting rods are distributed in an up-and-down symmetrical mode, and the other ends of the connecting rods are fixedly connected to the corresponding middle position of the elastic outer ring to play a role in assisting in pushing and extending.
Furthermore, the elastic outer ring is two semicircular films made of elastic materials, the elastic outer ring has the tendency of recovering the original shape after deformation, and the working condition of the maximum air inlet section is the moment when no deformation occurs.
Furthermore, the driving module is powered by a micro motor and used for pushing and pulling the push rod, the push rod is a cylindrical rod piece, and the shaft sleeve is provided with a round angle.
Furthermore, the driving module is arranged on the outer side of the air inlet sleeve, needs to be matched with an automobile self-contained control unit ECU for use, and sends a control signal to the micro motor by the ECU for quantitative driving.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. by using the negative Poisson ratio material, the invention greatly simplifies the constituent elements of the variable intake manifold, lightens the mass of the engine intake system and realizes the design goal of light weight of the automobile.
2. The negative Poisson ratio material has the characteristics that the negative Poisson ratio material is matched with a transmission system for use, and can finish stepless and continuous change of an air inlet section within a certain range, so that an engine can keep the optimal air inlet efficiency, and the economy, the dynamic property and the emission property of the engine are improved.
Drawings
Fig. 1 is a first schematic structural diagram of an intake manifold device according to the present invention.
Fig. 2 is a second schematic structural view of the intake manifold device of the present invention.
Fig. 3 is a third schematic structural view of the intake manifold device of the present invention.
Fig. 4 is a front view of the intake manifold device of the present invention.
Fig. 5 is a bottom view of the intake manifold device of the present invention.
Fig. 6 is a left side view of the intake manifold device of the present invention.
Fig. 7 is a right side view of the intake manifold device of the present invention.
Fig. 8 is a cross-sectional view of an air inlet sleeve of the present invention.
Fig. 9 is a schematic view of the microstructure of a strip of negative poisson's ratio material of the present invention.
The reference numbers illustrate: 1-an air inlet sleeve; 2-air guide boss; 3-an actuator; 4-a transmission system; 5-a shell; 6-strips of negative poisson's ratio material; 7-an elastic outer ring; 8-an auxiliary mechanism; 9-a bottom plate; 10-a top cover; 11-U-shaped connecting strips; 12-upper connecting strip; 13-lower connecting strip; 14-left linkage; 15-right linkage; 16-an upper link; 17-a middle link; 18-a lower link; 19-a drive module; 20-a push rod; 21-sealing the shaft sleeve.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1 to 9, the variable intake manifold device based on a negative poisson's ratio structure according to the present embodiment includes an intake sleeve 1, an air guide boss 2, an actuator and a transmission system, where the overall structure of the intake sleeve 1 is a section of thick-walled pipeline, the front and rear ports can be installed in cooperation with an intake manifold of an automobile engine, a circular hole is drilled in a wall of the intake sleeve 1 for connecting the transmission system 4, the air guide boss 2 is fixed on an inner wall of the intake sleeve 1 and is an arc-shaped ramp, an end surface of the ramp is a circular cross section, a surface of the ramp is a smooth arc-shaped surface, and an air flow in the intake sleeve 1 moves along the ramp of the air guide boss 2, so that intake resistance in an intake process can be greatly reduced.
The actuator comprises a shell 5, a negative Poisson ratio material strip 6, an elastic outer ring 7 and an auxiliary mechanism 8, wherein the shell 5 comprises a bottom plate 9, a top cover 10 and a U-shaped connecting strip 11 for connecting the bottom plate 9 and the top cover 10, the bottom plate 9 is a thin plate and is fixed on the section of the air guide boss 2, the section of the bottom plate is in a circular shape with the same shape as the end face of a ramp of the air guide boss 2, and outward extending bulges are added at the upper end and the lower end and are used for connecting and fixing the U-shaped connecting strip 11; the shape of the top cover 10 is consistent with that of the bottom plate 9, the top cover 10 is distributed in an up-down symmetrical mode, the U-shaped connecting strips 11 comprise upper connecting strips 12 and lower connecting strips 13, the upper connecting strips 12 and the lower connecting strips 13 are respectively fixedly connected with the upper end and the lower end of the bottom plate 9 and the top cover 10, the cross sections of the upper connecting strips and the lower connecting strips are U-shaped, the openings of the upper connecting strips and the lower connecting strips are opposite, the function of clamping the negative poisson's ratio material strips 6 can be achieved, and round; the negative poisson's ratio material strip 6 is a cuboid and is formed by combining a large number of unit bodies with negative poisson's ratio attributes, the upper end face of each unit body is provided with a bulge to be fixed in the middle of a U-shaped connecting strip 11, the lower end face of each unit body is connected with the transmission system 4, the left side face and the right side face of each unit body are clamped by the U-shaped connecting strips 11, a certain gap is reserved between the bottom face and the bottom plate 9 and between the top face and the top cover 10 of each unit body 6, so that the negative poisson's ratio material strip 6 cannot impact the bottom plate 9 and the top cover 10 when being stretched, the elastic outer ring 7 is two semicircular films made of elastic materials, the upper end and the lower end of each unit body are respectively connected and fixed on the outer side faces of an upper connecting strip 12 and a lower connecting strip 13, the top portion and the lower portion of each unit body are respectively fixedly connected to the arc side faces of the top, One end of the middle connecting rod 17, one end of the lower connecting rod 18, one end of the upper connecting rod 16, one end of the middle connecting rod 17 and one end of the lower connecting rod 18 are connected, the connecting points are fixed in the middle of the side face of the negative Poisson's ratio material strip 6, a certain included angle is formed among the connecting rods, the connecting rods are distributed in an up-down symmetrical mode, and the other end of the connecting rods is fixedly connected to the corresponding middle position of the elastic outer ring 7 to.
The transmission system comprises a driving module 19, a push rod 20 and a sealing shaft sleeve 21, wherein the driving module 19 is installed on the outer side of the air inlet sleeve 1, a micro motor is mainly used for providing a power source and pushing and pulling the push rod 20, the push rod 20 is a long and thin cylindrical rod, one end of the long and thin cylindrical rod is connected and fixed with the lower end face of the negative poisson's ratio material strip 6, the other end of the long and thin cylindrical rod is connected and fixed with the output end of the driving module 19, the sealing shaft sleeve 21 comprises two identical shaft sleeves which are circular rings with certain lengths and are respectively installed on a circular hole of a pipe wall of the air inlet sleeve 1 and a circular hole of a lower connecting strip 13, the push rod 20 is sleeved in the sealing shaft sleeve 21 and penetrates through the lower connecting strip 13 and the air inlet.
In the running process of the automobile, the air inlet end and the pipeline of the engine air inlet system are arranged in front of the air inlet system, air enters along the air inlet end and the pipeline of the air inlet system, airflow of the air inlet system flows to the air inlet end of the air inlet sleeve 1 and moves along the ramp and two sides of the air guide boss 2, when the running working condition of the automobile changes, the rotating speed correspondingly changes, data are collected by an ECU (electronic control unit) of the automobile, the ECU analyzes the data, and according to the optimal air inlet efficiency required by the current rotating speed, corresponding signals are sent to the micro motor of the driving module 19, so that the micro motor moves for a certain number of steps, and the output end of the driving module 19 pushes (pulls) the push rod 20 for a certain distance in.
When the engine needs to reduce the air inlet section, the ECU generates a corresponding signal to the driving module 19, an output shaft of the driving module 19 quantitatively pulls the push rod 20, so that the push rod 20 pulls the lower end surface of the negative poisson ratio material strip 6, due to the characteristics of the negative poisson ratio material strip 6, the negative poisson ratio material strip 6 generates expansion deformation, two sides generate expansion deformation, and the auxiliary mechanism 8 of rigid materials connected to two sides of the negative poisson ratio material strip 6 is driven to generate relative movement, the linkage group performs auxiliary expansion, so that the elastic outer ring 7 is further forced to expand and deform, but because the periphery of the elastic outer ring 7 is fixed on the contact surface of the bottom plate 9, the top cover 10 and the U-shaped connecting strip 11 in a sealing manner, the middle part is connected with one end of the linkage group of the auxiliary mechanism 8, so that only the middle part of the elastic outer ring 7 expands and deforms outwards, the peripheral section of the actuator 3 is enlarged, and the air, thereby reducing the intake efficiency of the engine.
When the engine needs to enlarge the air inlet section, the ECU generates a corresponding signal to the driving module 19, an output shaft of the driving module 19 pushes back the push rod 20 quantitatively, so that the push rod 20 pushes the lower end face of the negative Poisson ratio material strip 6 to force the deformation of the negative Poisson ratio material strip 6 to be reduced, due to the characteristics of the negative Poisson ratio material strip 6, the negative Poisson ratio material strip 6 is compressed and deformed, the expansion deformation generated at the two sides is reduced, the auxiliary mechanisms 8 which are connected to the rigid materials at the two sides of the negative Poisson ratio material strip 6 are driven to move relatively, the auxiliary expansion performed by the connecting rod group is contracted, the elastic outer ring 7 is further contracted, the peripheral section of the actuator 3 is reduced, the effect of blocking the air inlet flow is weakened, and the air.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A variable intake manifold device based on a negative Poisson ratio structure is characterized by comprising an intake sleeve (1), an air guide boss (2), an actuator (3) and a transmission system (4), wherein a round hole is drilled in the wall of the intake sleeve (1) and is used for being connected with the transmission system (4), the air guide boss (2) is an arc-shaped ramp and is fixed on the inner wall of the intake sleeve (1), and the airflow in the intake sleeve (1) moves along the ramp of the air guide boss (2);
the actuator (3) comprises a shell (5), a negative Poisson ratio material strip (6), an elastic outer ring (7) and an auxiliary mechanism (8), the shell (5) comprises a bottom plate (9), a top cover (10) and a U-shaped connecting strip (11) for connecting the bottom plate (9) and the top cover (10), the bottom plate (9) is fixed on the end face of the air guide boss (2), the U-shaped connecting strip (11) comprises an upper connecting strip (12) and a lower connecting strip (13), the upper connecting strip (12) and the lower connecting strip (13) are respectively fixedly connected with the upper end and the lower end of the bottom plate (9) and the top cover (10), the sections of the U-shaped connecting strips (11) are in two U shapes, openings are opposite to each other and used for clamping the negative Poisson ratio material strip (6), and round holes are drilled in the lower connecting strip (13); the negative Poisson ratio material strip (6) is formed by combining a plurality of unit bodies with negative Poisson ratio attributes, the upper end face of each unit body is provided with a protrusion to be fixed in the middle of a U-shaped connecting strip (11), the lower end face of each unit body is connected with the transmission system (4), the left side face and the right side face of each unit body are clamped by the U-shaped connecting strips (11), a gap is reserved between the bottom face of the negative Poisson ratio material strip (6) and the bottom plate (9), and a gap is reserved between the top face of the negative Poisson ratio material strip (6) and the top cover (10), so that the negative Poisson ratio material strip (6) cannot impact the bottom plate (9) and the top cover (10; the elastic outer ring (7) is made of elastic materials, the upper end and the lower end of the elastic outer ring are respectively connected and fixed on the outer side surfaces of the upper connecting strip (12) and the lower connecting strip (13), and the top part and the bottom part of the elastic outer ring are respectively fixedly connected on the arc side surfaces of the top cover (10) and the bottom plate (9); the auxiliary mechanism (8) comprises a left connecting rod group (14) and a right connecting rod group (15) which are symmetrically distributed in the left-right direction;
the transmission system (4) comprises a driving module (19), a push rod (20) and sealing shaft sleeves (21), wherein the driving module (19) is installed on the outer side of the air inlet sleeve (1), one end of the push rod (20) is connected with the lower end face of the negative Poisson's ratio material strip (6), the other end of the push rod is connected with the output end of the driving module (19), the two sealing shaft sleeves (21) are arranged and are respectively installed on a circular hole of the wall of the air inlet sleeve (1) and a circular hole of the lower connecting strip (13), and the side faces of the push rod (20) are sleeved in the two sealing shaft sleeves (21) when the push rod (20) is connected, and penetrate through the lower connecting strip (13) and the air inlet pipe sleeve.
2. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the whole structure of the air inlet sleeve (1) is a thick-wall pipeline, and the front port and the rear port can be installed in cooperation with an intake manifold of an automobile engine.
3. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 2, wherein the air inlet end of the air inlet sleeve (1) is the end opposite to the air guide boss (2) ramp.
4. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the end surface of the air guide boss (2) is circular in cross section, and the ramp surface is a smooth arc surface.
5. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the cross-sectional shape of the bottom plate (9) is a circle in accordance with the ramp end surface of the air guide boss (2), and overhanging protrusions for connecting and fixing the U-shaped connecting strips (11) are added at the upper and lower ends of the bottom plate (9);
the top cover (10) is consistent with the bottom plate (9) in shape and is distributed in an up-and-down symmetrical mode.
6. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the negative poisson's ratio material strip (6) is a cuboid, a connecting seat is fixed in the middle of the side surface of the negative poisson's ratio material strip (6), the connecting seat is provided with a fixing rod which can be connected with the fine holes at one end of the upper connecting rod (16), the middle connecting rod (17) and the lower connecting rod (18) and forms a rotating pair.
7. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the left linkage (14) and the right linkage (15) both comprise an upper link (16), a middle link (17) and a lower link (18), one ends of the upper link (16), the middle link (17) and the lower link (18) are connected, the connection points are fixed in the middle of the side surface of the negative poisson's ratio material strip (6), a certain included angle is formed among the links, the links are distributed symmetrically up and down, and the other ends are fixedly connected to the corresponding middle position on the elastic outer ring (7) to play a role in assisting the pushing and extending.
8. The variable intake manifold device based on negative poisson's ratio structure as claimed in claim 1, characterized in that said elastic outer ring (7) is made of two semicircular membranes made of elastic material, and has a tendency to recover to the original shape after deformation, and the time when no deformation starts is the maximum intake section working condition.
9. The negative poisson's ratio structure-based variable intake manifold device according to claim 1, wherein the driving module (19) is powered by a micro-motor for pushing and pulling the push rod (20), the push rod (20) is a cylindrical rod, and the sealing sleeve (21) is rounded.
10. The variable intake manifold device based on the negative poisson's ratio structure as claimed in claim 1, wherein the driving module (19) is installed on the outer side of the intake sleeve (1) and is used in cooperation with an automobile-mounted control unit (ECU), and the ECU sends a control signal to the micro motor to drive the micro motor quantitatively.
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| CN201910383802.8A CN110067682B (en) | 2019-05-09 | 2019-05-09 | Variable intake manifold device based on negative Poisson ratio structure |
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| CN201910383802.8A CN110067682B (en) | 2019-05-09 | 2019-05-09 | Variable intake manifold device based on negative Poisson ratio structure |
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