CN219142760U - Test bench for aging test of automotive high-temperature tail gas sensor - Google Patents
Test bench for aging test of automotive high-temperature tail gas sensor Download PDFInfo
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- CN219142760U CN219142760U CN202223043414.1U CN202223043414U CN219142760U CN 219142760 U CN219142760 U CN 219142760U CN 202223043414 U CN202223043414 U CN 202223043414U CN 219142760 U CN219142760 U CN 219142760U
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The utility model discloses a test bench for aging test of a high-temperature tail gas sensor for a vehicle, which is characterized by comprising a support frame, wherein a mounting box is arranged on the support frame, a horizontal clamping platform is arranged above the mounting box at intervals, a plurality of clamping units are arranged on the clamping platform, and each clamping unit consists of a central extending hole and a plurality of clamping holes which are arranged on the clamping platform in a vertically penetrating manner; in the same clamping unit: the plurality of clamping holes are arranged outside the central extending hole in a surrounding mode at intervals, each clamping hole is communicated with the central extending hole through a straight-strip-shaped guide groove, and the guide grooves are arranged on the clamping platform in a vertically penetrating mode. The device has the advantages that the structure is simple, the clamping and the replacement are convenient and quick, and the clamping of a plurality of sensors can be realized at one time, so that the testing efficiency is effectively improved; the mounting box is arranged below the clamping platform, and part of components of the test system for experimental test can be directly arranged in the mounting box, so that the test instrument and related connecting wire harnesses are orderly and orderly arranged.
Description
Technical Field
The utility model relates to a test bench, in particular to a test bench for an aging test of a high-temperature tail gas sensor for a vehicle.
Background
The conventional gas sensors for monitoring automobile exhaust in the current market comprise an oxygen sensor, a nitrogen oxide sensor, an ammonia sensor and the like, and most of the sensors work in severe environments such as high temperature, high humidity, high voltage, knocking and the like, so that the stability of the sensors in long-term use is strictly required. Therefore, in the research, development and production process of such sensors, the detection and evaluation of the aging performance of the sensors is a process that must be performed.
The outer housing of the conventional automotive high temperature exhaust gas sensor body generally includes a head protecting section λ1, a thread section λ2, a hexagonal head section λ3, a middle protecting section λ4 and a tail protecting section λ5 (as shown in fig. 1) from top to bottom, wherein the hexagonal head section λ3 protrudes outwardly. In the long-term stability evaluation process based on the sensor, the sensor needs to be clamped to achieve a stable and safe fixing position during testing, and the existing clamping modes of the external shell of the sensor on the test bench for the aging test of the vehicle high-temperature tail gas sensor mainly comprise the following steps: (1) The special steel plate with the adaptive threaded holes is fixed on a section of special steel plate through a hexagonal head section and threads; (2) Hanging directly on a desktop or a shelf for testing in a suspending way; (3) The fixing is realized by the special buckling device and the top buckling hexagonal head. The clamping mode of the sensor on the test bench limits the test quantity and the replacement speed of the sensor to a certain extent, and the clamping operation is complicated, so that the test efficiency is low. In addition, after the connection of various test components (such as voltmeters, ammeter and the like) for forming the test system is completed, the test components are generally directly and randomly placed on the test bench, so that the whole test bench is disordered, wiring is disordered in the test process, the test efficiency is affected, and meanwhile, the risk of test failure caused by wrong wiring exists.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the test board for the aging test of the automotive high-temperature tail gas sensor, which has a simple, neat and compact structure and can effectively improve the test efficiency.
The technical scheme adopted for solving the technical problems is as follows:
the test bench for the aging test of the automotive high-temperature tail gas sensor comprises a support rack, wherein an installation box for installing a test system is arranged on the support rack, a horizontal clamping platform is arranged above the installation box at intervals, a plurality of clamping units are arranged on the clamping platform, and each clamping unit is formed by a central extending hole for extending the automotive high-temperature tail gas sensor into the installation and a plurality of clamping holes for clamping the automotive high-temperature tail gas sensor, wherein the central extending hole is formed in the clamping platform in a vertically penetrating manner;
in the same clamping unit: the clamping holes are arranged outside the central extending holes in a surrounding mode at intervals, each clamping hole is communicated with the central extending hole through a straight guide groove, and the guide grooves are arranged on the clamping platform in a vertically penetrating mode.
The mounting box comprises a top plate and a bottom plate which are horizontally arranged and vertically arranged at intervals, two sides of the top plate and the bottom plate are respectively connected through a side plate, the front ends of the top plate and the bottom plate are connected through a front plate, the rear ends of the top plate and the bottom plate are connected through a back plate, and a cavity is formed between the top plate, the bottom plate, the front plate, the back plate and the two side plates in a surrounding mode. The mounting box is simple in structure, related components of the testing system are placed in the cavity after being connected, so that the whole structure is compact and neat, the length between related connecting wires can be shortened, and the accuracy is improved.
And a plurality of heat dissipation grooves communicated with the cavities are formed in each side plate. The heat dissipation grooves formed in the side plates can effectively realize rapid dissipation of heat generated in the working process of the components placed in the cavities, so that the service lives of the components are effectively ensured.
The test system is provided with a test interface matched with a test connector arranged on the test end of the vehicle high-temperature tail gas sensor, the top plate is provided with an extension opening for the test interface to extend out of the mounting box, and the test interface extends out of the cavity from the extension opening and is arranged on the mounting box. The test connector is convenient to be matched and connected with the test connector on the sensor, so that the circuit is concise and tidy, and each test interface can be correspondingly numbered, so that the problem of wiring error caused by more sensors is effectively reduced.
The test system comprises a single chip microcomputer control module and at least one group of test components controlled by the single chip microcomputer control module, wherein each test component comprises a switch power supply, a plurality of ampere meters, a voltmeter and a direct current solid state relay, the number of the ampere meters is matched with the number of the high-temperature tail gas sensors to be tested in the group, the positive electrode of the control end of the direct current solid state relay is connected with a general input port of the single chip microcomputer control module, the negative electrode of the control end of the direct current solid state relay is connected with a general output port of the single chip microcomputer control module, the positive electrode port of the switch power supply is connected with the positive electrode of each ampere meter, the negative electrode of each ampere meter is used for being connected with the second heating lead of the high-temperature tail gas sensor in the group during testing, the positive electrode of the direct current solid state relay is connected with the positive electrode of the direct current solid state relay, and the working end of the direct current solid state relay is connected with the positive electrode of the direct current relay. Thus, a group of test components can form a test loop.
The system can realize heating cycle test of a plurality of sensor samples, adopts the singlechip control module as a signal source for switching on and off a power supply, adopts the direct current solid state relay as an actuator for switching on and off the power supply, and displays the heating voltage and the heating current of the sensors by the ammeter and the voltmeter. During operation, the voltage of the heating end of the sensor is circularly switched on and off, the voltmeter monitors the heating voltage of the sensor, the ammeter monitors the heating current of each sensor, and whether each sensor is in a normal heating state can be known by observing the voltmeter and the ammeter. After the equipment is started, according to a program set by the singlechip control module, the equipment performs automatic on-off circulation, and after the circulation times reach a set value, the circulation is automatically stopped, and the equipment stops running.
The system is provided with a plurality of binding posts which are convenient to assemble and disassemble and are connected, a first heating lead of the sensor of the automobile high temperature sensor is connected with the first binding post, the first binding post is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end on the same first binding post are electrically conducted, a common end formed by connecting the first connecting ends is respectively connected with a positive electrode of a working end of the direct current solid state relay and a negative electrode port of the voltmeter, and the second connecting end is used for being connected with the first heating lead of one automobile high temperature tail gas sensor;
the positive pole of ampere meter be connected with the second terminal, the second terminal have third link and fourth link, same the second terminal on the third link with the fourth link electric conduction, the third link with one the positive pole of ampere meter link to each other, a plurality of fourth links link common end that form link to each other respectively with switching power supply's positive pole port with the positive pole of ampere meter link to each other. The convenient installation and the disassembly are realized through the binding post.
The voltmeter is a digital tube type voltmeter, the ammeter is a digital tube type ammeter, the front plate is provided with an installation opening for embedding and installing the voltmeter and the ammeter, the digital tube type voltmeter and the digital tube type ammeter are respectively embedded and installed in the corresponding installation openings, and the digital tube type voltmeter and the digital display screen of the digital tube type ammeter are positioned outside the installation box. The voltmeter and the ammeter adopt digital tubes, are installed in an installation port arranged on the front plate, and the digital display screen is positioned outside the installation box, so that real-time voltage and current values can be conveniently read, and a tester can judge the reliability of an experiment in real time in the test process.
The inner diameter of the clamping hole is larger than the outer diameter of the middle protection section of the high-temperature tail gas sensor for the vehicle and smaller than the outline dimension of the hexagonal head section of the high-temperature tail gas sensor for the vehicle. When the high-temperature tail gas sensor is used, the hexagon head section of the high-temperature tail gas sensor for the vehicle is placed on the clamping platform, so that stable clamping and positioning of the hexagon head section on the clamping platform are ensured.
The support frame comprises a support frame body fixedly arranged below the installation box, and the lower part of the support frame body is supported by a plurality of vertically arranged support legs. The supporting frame is simple in structure, stable in supporting and low in manufacturing cost.
The mounting box is connected with the clamping platform through a plurality of vertically arranged supporting columns. The structure for realizing the interval connection between the mounting box and the clamping platform is simple, and the length of the supporting upright post needs to be adaptively configured according to the length of the sensor wire harness, so that the lead wires of the sensor can be vertically placed, and the phenomenon of knotting is avoided.
Compared with the prior art, the utility model has the advantages that:
(1) The structure is simple, the central extending hole in each clamping unit is a multiplexing extending hole of the clamping unit, as the tail end of the wire harness of the high-temperature gas sensor for the vehicle is provided with a connecting joint, the external dimension of the connecting joint is usually much larger than that of the external shell of the sensor body, so that the sensor is not feasible to be directly inserted into the clamping hole from top to bottom, the sensor is required to extend into the central extending hole from bottom to top, the wire harness part of the sensor is thinner, the sensor is brought into the corresponding clamping hole through a straight guide groove by utilizing the characteristic of thinner wire harness part of the sensor, the clamping and the replacement of the external shell of the sensor are realized through the clamping hole, the clamping and the replacement are both convenient and quick, and meanwhile, the wire harness is straightened and tidied by the way when passing through the guide groove;
(2) The clamping platform is provided with a plurality of clamping units, so that the space of the clamping platform is reasonably utilized, a plurality of clamping stations are formed, and the clamping of a plurality of high-temperature tail gas sensors for vehicles can be realized at one time, thereby effectively improving the testing efficiency;
(3) Based on the clamping device, the device is mainly used for aging test of the high-temperature tail gas sensor for the vehicle, and a plurality of clamping holes are arranged at intervals in the same clamping unit in view of a high-temperature test environment, so that the device meets the design requirement;
(4) The mounting box is arranged below the clamping platform, and part of components of the test system for experimental test can be directly arranged in the mounting box, so that the test instrument and related connection wire harnesses are orderly and orderly arranged, and the problems of low test efficiency and test failure caused by wiring errors are avoided.
Drawings
FIG. 1 is a schematic diagram of a conventional high temperature exhaust gas sensor for a vehicle;
FIG. 2 is a first perspective view of the present utility model;
FIG. 3 is a second perspective view of the present utility model;
FIG. 4 is a schematic cross-sectional view of the present utility model;
FIG. 5 is a schematic view of the loading platform according to the present utility model;
FIG. 6 is a schematic structural diagram of a high temperature exhaust gas sensor for a vehicle mounted on one of the clamping units according to the present utility model;
FIG. 7 is a schematic circuit diagram of a test system according to the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in the figure, the test board for aging test of the automotive high-temperature tail gas sensor comprises a support rack 1, wherein an installation box 4 for installing a test system is arranged on the support rack 1, a horizontal clamping platform 2 is arranged above the installation box 4 at intervals, a plurality of clamping units 3 are arranged on the clamping platform 2, and each clamping unit 3 is composed of a central extending hole 301 for extending the automotive high-temperature tail gas sensor lambda into installation and a plurality of clamping holes 302 for clamping the automotive high-temperature tail gas sensor lambda, wherein the central extending hole 301 is arranged on the clamping platform 2 in a vertically penetrating manner;
in the same clamping unit 3: the plurality of clamping holes 302 are circumferentially arranged outside the central extending hole 301 at intervals, each clamping hole 302 is communicated with the central extending hole 301 through a straight guide groove 303, and the guide grooves 303 are arranged on the clamping platform 2 in a penetrating mode up and down.
In this embodiment, the mounting box 4 includes a top plate 41 and a bottom plate 42 horizontally and vertically arranged at intervals, two sides of the top plate 41 and the bottom plate 42 are respectively connected by a side plate 43, front ends of the top plate 41 and the bottom plate 42 are connected by a front plate 44, rear ends of the top plate 41 and the bottom plate 42 are connected by a back plate 45, and a cavity 46 is defined between the top plate 41, the bottom plate 42, the front plate 44, the back plate 45 and the two side plates 43. The mounting box 4 has a simple structure, and related components of the test system are placed in the cavity 46 after being connected, so that the whole structure is compact and neat, the length between the related connecting wires can be shortened, and the accuracy is improved.
In this embodiment, a plurality of heat dissipation grooves 431 communicating with the cavity 46 are provided on each side plate 43. The heat dissipation grooves 431 formed in the side plates 43 can effectively realize rapid dissipation of heat generated in the working process of the components placed in the cavity 46, so that the service lives of the components can be effectively ensured.
In this embodiment, the test system has a test interface (not shown) that mates with a test connector provided on the test end of the high temperature exhaust gas sensor for a vehicle, and the top plate 41 is provided with a protruding opening 411 through which the test interface protrudes from the mounting box 4, and the test interface protrudes from the protruding opening 411 into the cavity 46 provided on the mounting box 4. The test connector is convenient to be matched and connected with the test connector on the sensor, so that the circuit is concise and tidy, and each test interface can be correspondingly numbered, so that the problem of wiring error caused by more sensors is effectively reduced.
In this embodiment, two test ends of the vehicle high temperature tail gas sensor lambda are respectively provided with a first heating lead and a second heating lead, the test system comprises a single chip microcomputer control module and at least one group of test components controlled by the single chip microcomputer control module, the test components comprise a switch power supply, a plurality of ampere meters A, a voltmeter V and a direct current solid state relay, the number of the ampere meters A is matched with the number of the vehicle high temperature tail gas sensors lambda to be tested in the group, the positive electrode of the control end of the direct current solid state relay is connected with a general output port of the single chip microcomputer control module, and the negative electrode of the control end of the direct current solid state relay is connected with a general input port of the single chip microcomputer control module. The positive electrode port of the switching power supply is connected with the positive electrode of each ammeter A and the positive electrode port of the voltmeter V, the negative electrode of each ammeter A is used for being connected with the second heating lead of the vehicle high-temperature tail gas sensor lambda during testing, the first heating lead of each vehicle high-temperature tail gas sensor lambda is connected with the positive electrode of the working end of the direct-current solid-state relay and the negative electrode of the voltmeter V, and the negative electrode of the working end of the direct-current solid-state relay is connected with the common negative electrode port of the switching power supply.
The system can realize heating cycle test of a plurality of sensor samples, adopts the singlechip control module as a signal source for switching on and off of a switching power supply, adopts the direct current solid state relay as an actuator for switching on and off of the switching power supply, and displays the heating voltage and current of the sensors by the ammeter A and the voltmeter V. During operation, the voltage of the heating end of the sensor is circularly switched on and off, the voltmeter V monitors the heating voltage of the sensor, the ammeter A monitors the heating current of each sensor, and whether each sensor is in a normal heating state can be known by observing the voltmeter V and the ammeter A. After the equipment is started, according to a program set by the singlechip control module, the equipment performs automatic on-off circulation, and after the circulation times reach a set value, the circulation is automatically stopped, and the equipment stops running.
In this specific embodiment, the positive electrode of the voltmeter V is provided with a plurality of first binding posts 111 for the heating lead 1 of the vehicle high-temperature tail gas sensor λ to be conveniently assembled and disassembled, the first binding posts 111 are provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end on the same first binding post 111 are electrically conducted, the common ends formed by connecting the plurality of first connecting ends are respectively connected with the positive electrode of the working end of the direct-current solid state relay and the negative electrode of the voltmeter V, and the second connecting end is used for being connected with the first heating lead of the vehicle high-temperature tail gas sensor λ;
the positive pole of ammeter A is connected through second terminal 222, and second terminal 222 has third link and fourth link, and the third link and the fourth link on the same second terminal are electric leads to, and the third link links to each other with the positive pole of an ammeter A, and the common end that a plurality of fourth links formed links to each other with the positive pole port of switching power supply and the positive pole of voltmeter V respectively. The convenient installation and the disassembly are realized through the binding post.
In this specific embodiment, the voltmeter V is a digital tube type voltmeter, the ammeter a is a digital tube type ammeter, the front plate 44 is provided with a mounting opening 441 for embedding and mounting the voltmeter V and the ammeter a, the digital tube type voltmeter and the digital tube type ammeter are respectively embedded and mounted in the corresponding mounting opening 441, and the digital display screen of the digital tube type voltmeter and the digital tube type ammeter is located outside the mounting box 4. Voltmeter V and ampere meter A adopt the digital tube type, install in the mounting port 441 that sets up on front bezel 44, and the digital display screen is located the mounting box 4 outside, is convenient for read real-time voltage and current value, supplies the tester to judge the reliability of experiment in real time in the testing process.
In this embodiment, the inner diameter of the clamping hole 302 is greater than the outer diameter of the mid-protection section λ4 of the vehicle high temperature exhaust sensor λ and less than the outer dimension of the hex head section λ3 of the vehicle high temperature exhaust sensor λ. When the automobile high-temperature tail gas sensor lambda is used, the hexagon head section lambda 3 of the automobile high-temperature tail gas sensor lambda is placed on the clamping platform 2, so that stable clamping and positioning of the automobile high-temperature tail gas sensor lambda on the clamping platform 2 are ensured.
In this embodiment, the support frame 1 includes a support frame 101 fixedly mounted below the mounting case 4, and the lower side of the support frame 101 is supported by a plurality of vertically arranged support legs 102. The supporting frame 1 has the advantages of simple structure, stable support and low manufacturing cost.
In this particular embodiment, the mounting box 4 and the clamping platform 2 are connected by a plurality of vertically arranged support posts 103. The structure for realizing the interval connection between the mounting box 4 and the clamping platform is simple, and the length of the supporting upright post 103 needs to be adaptively configured according to the length of the sensor wire harness, so that the lead wires of the sensor can be vertically placed, and the phenomenon of knotting is avoided.
Claims (10)
1. The test bench for the aging test of the automotive high-temperature tail gas sensor is characterized by comprising a support rack, wherein an installation box for installing a test system is arranged on the support rack, a horizontal clamping platform is arranged above the installation box at intervals, a plurality of clamping units are arranged on the clamping platform, and each clamping unit is formed by a central extending hole for extending the automotive high-temperature tail gas sensor into the installation and a plurality of clamping holes for clamping the automotive high-temperature tail gas sensor, wherein the central extending hole is arranged on the clamping platform in a vertically penetrating manner;
in the same clamping unit: the clamping holes are arranged outside the central extending holes in a surrounding mode at intervals, each clamping hole is communicated with the central extending hole through a straight guide groove, and the guide grooves are arranged on the clamping platform in a vertically penetrating mode.
2. The test bench for aging test of high temperature exhaust gas sensor for vehicle as claimed in claim 1, wherein said mounting box comprises a top plate and a bottom plate horizontally arranged at an upper and a lower intervals, two sides of said top plate and said bottom plate are respectively connected by a side plate, front ends of said top plate and said bottom plate are connected by a front plate, rear ends of said top plate and said bottom plate are connected by a back plate, and a cavity is defined between said top plate, said bottom plate, said front plate, said back plate and said two side plates.
3. The test stand for burn-in testing of a high temperature exhaust gas sensor for a vehicle of claim 2, wherein each of said side plates is provided with a plurality of heat sink grooves communicating with said cavity.
4. The test stand for aging test of high temperature exhaust gas sensor for vehicle as claimed in claim 2, wherein said test system has a test interface for mating with a test connector provided at a test end of the high temperature exhaust gas sensor for vehicle, said top plate is provided with an extension port through which said test interface extends out of said mounting box, and said test interface extends out of said cavity from said extension port and is provided on said mounting box.
5. The test board for aging test of high-temperature exhaust gas sensor for vehicle as claimed in claim 4, wherein two test ends of the high-temperature exhaust gas sensor for vehicle are respectively provided with a first heating lead and a second heating lead, the test system comprises a single-chip microcomputer control module and at least one group of test components controlled by the single-chip microcomputer control module, the test components comprise a switch power supply, a plurality of ampere meters, a voltmeter and a direct-current solid-state relay, the number of the ampere meters is matched with the number of the high-temperature exhaust gas sensor for vehicle to be tested in the group, the positive electrode of the control end of the direct-current solid-state relay is connected with the general input port of the single-chip microcomputer control module, the negative electrode of the control end of the direct-current solid-state relay is connected with the general output port of the single-chip microcomputer control module, the positive electrode port of the switch power supply is connected with the positive electrode of each ampere meter and the positive electrode of the voltmeter, the negative electrode of each ampere meter is used for testing the negative electrode of the direct-current solid-state relay is connected with the common heating lead of the high-temperature exhaust gas sensor for vehicle, and the common output port of the direct-current relay is connected with the negative electrode of the high-temperature sensor for vehicle.
6. The test bench for aging test of high temperature exhaust gas sensor for vehicle as claimed in claim 5, wherein the positive electrode of the voltmeter is provided with a plurality of first binding posts for the convenient dismounting connection of the first heating lead wire of the high temperature exhaust gas sensor for vehicle, the first binding posts are provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end on the same first binding post are electrically conducted, the common ends formed by connecting the first connecting ends are respectively connected with the positive electrode of the working end of the direct current solid state relay and the negative electrode of the voltmeter, and the second connecting end is used for being connected with the first heating lead wire of the high temperature exhaust gas sensor for vehicle;
the positive pole of ampere meter be connected through the second terminal, the second terminal have third link and fourth link, same the second terminal on the third link with the fourth link electric conduction, the third link with one the positive pole of ampere meter link to each other, a plurality of fourth links link common end that form link to each other respectively with switching power supply's positive pole port with the positive pole of ampere meter link to each other.
7. The test board for aging test of high-temperature tail gas sensor for vehicle as claimed in claim 5, wherein said voltmeter is a digital tube voltmeter, said ammeter is a digital tube ammeter, said front plate is provided with a mounting opening for embedding said voltmeter and said ammeter, said digital tube voltmeter and said digital tube ammeter are respectively embedded and mounted in said corresponding mounting opening, said digital tube voltmeter and said digital display screen of said digital tube ammeter are located outside said mounting box.
8. The test bench for aging test of high temperature exhaust gas sensor for vehicle as claimed in claim 1, wherein the inner diameter of the clamping hole is larger than the outer diameter of the middle protection section of the high temperature exhaust gas sensor for vehicle and smaller than the outer dimension of the hexagonal head section of the high temperature exhaust gas sensor for vehicle.
9. The test stand for aging test of automotive high-temperature tail gas sensor according to claim 1, wherein the support frame comprises a support frame body fixedly installed below the installation box, and the lower part of the support frame body is supported by a plurality of support legs which are vertically arranged.
10. The test bench for aging test of high-temperature tail gas sensor for vehicle as claimed in claim 1, wherein said mounting box is connected with said clamping platform by a plurality of vertically arranged supporting columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223043414.1U CN219142760U (en) | 2022-11-16 | 2022-11-16 | Test bench for aging test of automotive high-temperature tail gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223043414.1U CN219142760U (en) | 2022-11-16 | 2022-11-16 | Test bench for aging test of automotive high-temperature tail gas sensor |
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| CN219142760U true CN219142760U (en) | 2023-06-06 |
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| CN202223043414.1U Active CN219142760U (en) | 2022-11-16 | 2022-11-16 | Test bench for aging test of automotive high-temperature tail gas sensor |
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| CN (1) | CN219142760U (en) |
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