CN116558596A - Method and system for measuring volume of static air spring - Google Patents
Method and system for measuring volume of static air spring Download PDFInfo
- Publication number
- CN116558596A CN116558596A CN202310277804.5A CN202310277804A CN116558596A CN 116558596 A CN116558596 A CN 116558596A CN 202310277804 A CN202310277804 A CN 202310277804A CN 116558596 A CN116558596 A CN 116558596A
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- air
- volume
- air spring
- pressure
- spring assembly
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- 230000003068 static effect Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 210000003437 trachea Anatomy 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000009530 blood pressure measurement Methods 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a method and a system for measuring the volume of a static air spring, which relate to the technical field of automobile air suspension air spring testing, wherein S1, the volume of an air spring assembly is assumed to be V1, the volume of a gas storage source is measured to be V0, the effective volume of a gas pipe of a test system is V2, and the effective volume of a gas pipe of an inflation system is V3; s2, adjusting the air spring assembly to a target height, closing the first air valve, opening the third air valve, inflating the air spring assembly to the air pressure P1, measuring the temperature T1 of an air pipe of the inflation system when the air pressure P1 is obtained, wherein the volume of the system is V0+V3, and the air pressure in the air storage source is the atmospheric pressure P0; according to the method and the system for measuring the volume of the static air spring, due to the fact that a traditional water injection means is abandoned by adopting an air pressure measurement means, damage to the air spring assembly due to air pressure measurement is smaller than that caused by traditional water injection, and the tested air spring can be loaded for use again, so that waste is avoided.
Description
Technical Field
The invention relates to the technical field of automobile air suspension air spring testing, in particular to a method and a system for measuring the volume of a static air spring.
Background
The current method for measuring the volume of the static air spring is to add water into the air spring by using equipment, record the amount of added water to convert into the volume of the air spring after a certain pressure is reached, or pour the water in the air spring into a container to measure the volume of the air spring.
This approach has the following technical disadvantages:
(1) Depending on the special equipment, the air spring needs to be injected with rated pressure water by depending on the standard equipment.
(2) The water in the hollow spring after water injection test cannot be discharged completely, and the hollow spring cannot be reused.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a method and a system for measuring the volume of a static air spring.
The invention provides a method for measuring the volume of a static air spring, which comprises the following steps:
s1, assuming that the volume of an air spring assembly is V1, measuring to obtain that the volume of an air storage source is V0, the effective volume of an air pipe of a test system is V2, and the effective volume of the air pipe of an air charging system is V3;
s2, adjusting the air spring assembly to a target height, closing the first air valve, opening the third air valve, inflating the air spring assembly to the air pressure P1, measuring the temperature T1 of an air pipe of the inflation system when the air pressure P1 is obtained, wherein the volume of the system is V0+V3, and the air pressure in the air storage source is the atmospheric pressure P0;
s3, closing the third air valve and the second air valve, opening the first air valve, and reading the air pressure P2 after the high-pressure air flows from the direction of the air spring assembly to the direction of the air storage source, and measuring the temperature T2 of an air pipe of the test system when the air pressure P2 is obtained, wherein the volume of the system is V0+V1+V2, and the tiny change of the outer diameter of the leather bag is ignored under the states of P1 and P2;
s4, establishing an equation:
[P1*(V1+V2)+P0V0]/T1＝P2*(V0+V1+V2)/T2；
because the tiny temperature change in the inflation and deflation system is ignored, the value of T1 is infinitely close to T2, and in actual calculation, T1 = T2 can be considered;
from this, the empty spring volume can be calculated:
V1＝[P2*(V0+V2)-P1*V2-P0V0]/(P1-P2)。
preferably, the air pipe of the air charging system refers to the air pipe among the air spring assembly, the high-pressure air source, the first valve body, the third air valve, the second valve body, the first air valve and the air pressure display piece.
Preferably, the air pipe of the test system refers to the air pipe among the air spring assembly, the first valve body, the third air valve, the second valve body, the first air valve, the air pressure display piece and the air storage source.
Preferably, in S2, the target height refers to a height of the air spring assembly in a design state when the vehicle is half loaded, and is a preset standard value.
Preferably, in S2, the air pressure P1 refers to an internal pressure of the air spring assembly in a design state when the height is set, and is a preset standard value.
The system for measuring the volume of the static air spring comprises an air spring assembly, wherein the air spring assembly is communicated with a high-pressure air source and a gas storage source through an air pipe, an air pressure display piece is arranged on the air pipe between the air spring assembly and the gas storage source, and the air pressure display piece is used for displaying air pressure.
Preferably, a first air valve is arranged on the air pipe between the air spring assembly and the air storage source, and a third air valve is arranged on the air pipe between the air spring assembly and the high-pressure air source.
Preferably, the air storage source is communicated with an exhaust pipe, and a second air valve is arranged on the exhaust pipe.
Preferably, a first valve body is arranged on the air pipe between the air spring and the high-pressure air source, and the first valve body is communicated with the air storage source through the air pipe.
Preferably, a second valve body is arranged on the air pipe between the first valve body and the air storage source, and the second valve body is connected with the air pressure display piece through the air pipe.
1. In the method and the system for measuring the volume of the static air spring, the traditional water injection means is abandoned due to the adoption of the air pressure measurement means, the damage of the air pressure measurement to the air spring assembly is smaller than that of the traditional water injection, and the tested air spring can be loaded for use again, so that the waste is avoided.
2. The method and the system for measuring the volume of the static air spring are simple and easy to operate, only the air pressure value and the volume are needed to be measured, and special equipment which does not depend on the traditional water injection means is not needed, so that the method and the system have wide market prospect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure, 1, an air spring assembly; 2. an air pressure display member; 3. a gas storage source; 4. a high pressure air source; 5. a first valve body; 6. a second valve body; 7. a first air valve; 8. a second air valve; 9. a third air valve; 10. and an air pipe.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
A method of measuring the volume of a static air spring as shown in fig. 1, comprising the steps of:
s1, assuming that the volume of an air spring assembly 1 is V1, measuring to obtain that the volume of an air storage source 3 is V0, the effective volume of an air pipe of a test system is V2, and the effective volume of the air pipe of an air charging system is V3;
s2, adjusting the air spring assembly 1 to a target height, closing the first air valve 7, opening the third air valve 9, inflating the air spring assembly 1 to the air pressure P1, measuring the temperature T1 of an air pipe of the inflation system when the air pressure P1 is obtained, wherein the volume of the system is V0+V3, and the air pressure in the air storage source 3 is the atmospheric pressure P0;
s3, closing a third air valve 9 and a second air valve 8, opening a first air valve 7, and reading air pressure P2 after high-pressure air flows from the direction of the air spring assembly 1 to the direction of the air storage source 3, and measuring the temperature T2 of an air pipe of the test system when the air pressure P2 is obtained, wherein the volume of the system is V0+V1+V2;
s4, establishing an equation:
[P1*(V1+V2)+P0V0]/T1＝P2*(V0+V1+V2)/T2
because the tiny temperature change in the inflation and deflation system is ignored, the value of T1 is infinitely close to T2, and in actual calculation, T1 = T2 can be considered;
the empty spring volume can be calculated:
V1＝[P2*(V0+V2)-P1*V2-P0V0]/(P1-P2)。
the air pipe of the air charging system refers to an air pipe 10 between the air spring assembly 1, the high-pressure air source 4, the first valve body 5, the third air valve 9, the second valve body 6, the first air valve 7 and the air pressure display piece 2.
The air pipe of the test system refers to an air pipe 10 among the air spring assembly 1, the first valve body 5, the third air valve 9, the second valve body 6, the first air valve 7, the air pressure display piece 2 and the air storage source 3.
In S2, the target height refers to the height of the air spring assembly 1 in the design state when the vehicle is producing half load, and is a preset standard value.
In S2, the air pressure P1 refers to the internal pressure of the air spring assembly 1 in the design state when the height is set, and is a preset standard value.
The system for measuring the volume of the static air spring shown in fig. 1 comprises an air spring assembly 1, wherein the air spring assembly 1 is communicated with a high-pressure air source 4 and an air storage source 3 through an air pipe 10, and an air pressure display piece 2 is arranged on the air pipe 10 between the air spring assembly 1 and the air storage source 3, and the air pressure display piece 2 is used for displaying air pressure.
A first air valve 7 is arranged on an air pipe 10 between the air spring assembly 1 and the air storage source 3, and a third air valve 9 is arranged on the air pipe 10 between the air spring assembly 1 and the high-pressure air source 4.
The air storage source 3 is communicated with an exhaust pipe 10, and a second air valve 8 is arranged on the exhaust pipe 10.
A first valve body 5 is arranged on an air pipe 10 between the air spring assembly 1 and the high-pressure air source 4, and the first valve body 5 is communicated with the air storage source 3 through the air pipe 10.
A second valve body 6 is arranged on an air pipe 10 between the first valve body 5 and the air storage source 3, and the second valve body 6 is connected with the air pressure display piece 2 through the air pipe 10.
The high-pressure air source 4 is an air bottle.
The first valve body 5 and the second valve body 6 are three-way valves.
The air storage source 3 is an air storage tank.
The air pressure display member 2 is an air pressure gauge.
The air pressure display 2 includes other existing air pressure testing devices that can realize air pressure display.
The method and the system for measuring the volume of the static air spring are simple and easy to operate, do not need special equipment depending on the traditional water injection means, have wide market prospect, are relatively accurate in measurement, and accord with the actual use scene of the air spring.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. A method of measuring the volume of a static air spring, comprising the steps of:
s1, assuming that the volume of an air spring assembly (1) is V1, measuring to obtain that the volume of an air storage source (3) is V0, the effective volume of an air pipe of a test system is V2, and the effective volume of the air pipe of an air charging system is V3;
s2, adjusting the air spring assembly (1) to a target height, closing the first air valve (7), opening the third air valve (9), inflating the air spring assembly (1) to the air pressure P1, measuring the temperature T1 of an air pipe of the inflation system when the air pressure P1 is obtained, wherein the volume of the system is V0+V3 at the moment, and the air pressure in the air storage source (3) is the atmospheric pressure P0;
s3, closing a third air valve (9) and a second air valve (8), opening a first air valve (7), enabling high-pressure air to flow from the direction of an air spring assembly (1) to the direction of an air storage source (3), reading air pressure to be P2 after balance is achieved, measuring the temperature T2 of an air pipe of a test system when the air pressure P2 is obtained, and enabling the volume of the system to be V0+V1+V2;
s4, establishing an equation:
[P1*(V1+V2)+P0V0]/T1＝P2*(V0+V1+V2)/T2；
because the tiny temperature change in the inflation and deflation system is ignored, the value of T1 is infinitely close to T2, and in actual calculation, T1 = T2 can be considered;
from this, the empty spring volume can be calculated:
V1＝[P2*(V0+V2)-P1*V2-P0V0]/(P1-P2)。
2. method for measuring the volume of a static air spring according to claim 1, characterized in that the air tube of the charging system refers to the air tube (10) between the air spring assembly (1), the high-pressure air source (4), the first valve body (5), the third air valve (9), the second valve body (6), the first air valve (7) and the air pressure display (2).
3. Method for measuring the volume of a static air spring according to claim 1, characterized in that the air tube of the test system refers to the air tube (10) between the air spring assembly (1), the first valve body (5), the third air valve (9), the second valve body (6), the first air valve (7), the air pressure display (2) and the air reservoir (3).
4. The method of measuring a static air spring volume according to claim 1, wherein in S2, the target height refers to a height of the air spring assembly (1) in a design state when the vehicle is at half load, and is a preset standard value.
5. Method for measuring the volume of a static air spring according to claim 1, characterized in that in S2 the air pressure P1 refers to the internal pressure of the air spring assembly (1) in the design state at the set height, being a preset standard value.
6. The utility model provides a measure system of static air spring volume, includes air spring assembly (1), its characterized in that, air spring assembly (1) are through trachea (10) intercommunication have high-pressure air supply (4) and gas storage source (3), install atmospheric pressure display piece (2) on trachea (10) between air spring assembly (1) and gas storage source (3), atmospheric pressure display piece (2) are used for showing the atmospheric pressure.
7. Method and system for measuring the volume of a static air spring according to claim 6, characterized in that a first air valve (7) is mounted on the air pipe (10) between the air spring assembly (1) and the air reservoir (3), and a third air valve (9) is mounted on the air pipe (10) between the air spring assembly (1) and the high pressure air source (4).
8. Method and system for measuring the volume of a static air spring according to claim 6, characterized in that the air storage source (3) is connected with an exhaust pipe (10), and the exhaust pipe (10) is provided with a second air valve (8).
9. Method and system for measuring the volume of a static air spring according to claim 6, characterized in that a first valve body (5) is mounted on the air pipe (10) between the air spring assembly (1) and the high pressure air source (4), said first valve body (5) being in communication with the air storage source (3) via the air pipe (10).
10. Method and system for measuring the volume of a static air spring according to claim 9, characterized in that a second valve body (6) is mounted on the air pipe (10) between the first valve body (5) and the air reservoir (3), said second valve body (6) being connected to the air pressure display (2) by means of the air pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277804.5A CN116558596A (en) | 2023-03-21 | 2023-03-21 | Method and system for measuring volume of static air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277804.5A CN116558596A (en) | 2023-03-21 | 2023-03-21 | Method and system for measuring volume of static air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116558596A true CN116558596A (en) | 2023-08-08 |
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ID=87492244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310277804.5A Pending CN116558596A (en) | 2023-03-21 | 2023-03-21 | Method and system for measuring volume of static air spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116558596A (en) |
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2023
- 2023-03-21 CN CN202310277804.5A patent/CN116558596A/en active Pending
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