CN207894552U - A kind of durability test apparatus of vehicle exhaust pressure sensor - Google Patents
A kind of durability test apparatus of vehicle exhaust pressure sensor Download PDFInfo
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- CN207894552U CN207894552U CN201820154422.8U CN201820154422U CN207894552U CN 207894552 U CN207894552 U CN 207894552U CN 201820154422 U CN201820154422 U CN 201820154422U CN 207894552 U CN207894552 U CN 207894552U
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Abstract
The utility model discloses a kind of durability test apparatus of vehicle exhaust pressure sensor, the experimental rig includes pressure sensor tests exemplar, pressure medium bucket, insulating box, pressure sensor, air inlet stop valve, pressure monitor, outlet shut-off valve and simulation power plant, wherein, pressure medium bucket side is connect with air inlet pipe, the air inlet pipe is equipped with pressure sensor and air inlet stop valve, the other side is connect by pipeline with simulation power plant, also side is connected with outlet shut-off valve one end, the outlet shut-off valve other end is connect with pressure sensor tests exemplar, the pressure sensor tests exemplar and pressure medium bucket position are in insulating box, the pressure monitor is electrically connected with pressure sensor tests exemplar and pressure sensor respectively.The utility model has the advantages of simple structure, and low energy consumption for opposite engine bench test, and test effect is good.
Description
Technical field
The utility model is related to the durable of technical field of automobile parts more particularly to a kind of vehicle exhaust pressure sensor
Experimental rig.
Background technology
Semiconductor pressure sensor combines advanced micromachining technology at present, can export accurately, in high precision
, proportional to input pressure analog output signal.Its low cost and high performance feature, it is tight greatly to meet OEM client
The requirement of lattice.Sensor uses standard packaging form, and the forms such as the gauge pressure, absolute pressure, differential pressure of certain pressure range may be implemented
It measures.In pressure sensor Plastic Package, the process conditions of usual sensing chip and bonding are gold thread and aluminum pad bonding, are passed
Component is covered by Silica hydrogel after sense chip bonding, and this encapsulation can prevent and reduce aerial oxidation corrosion effect.By
In vehicle exhaust temperature, high, air pressure fluctuation contains greatly, particularly in tail gas composition the strong corrosive materials such as NO compounds, wherein having
A part of gas can permeate Silica hydrogel coating, corrode the good component of internal bonding, gold thread and aluminum pad especially in component
（Au/Al）Bonding because put without passivation protection layer, at higher temperature and air pressure effect of vibration can also accelerated corrosion reaction, make
Fail at bonding point, once and vehicle exhaust pressure sensor damage, tail gas pressure cannot be monitored in time, for by particle
Adsorbent equipment blocks, triple mode catalytic converter damages, and the heat proof material filled in muffler blocks and the initiation of northern area cold
Exhaust pipe plugging fault cannot respond in time caused by impeded drainage, cause engine Idling wobble, accelerate inability, add
Air inlet pipe " tempering ", anxious phenomena such as accelerating to stop working and can not start when fast, so user can grasp the service life of sensor simultaneously
Tail gas pressure sensor is replaced in time, and the damage of sensor is avoided to cause the failure of engine necessary.Existing detection dress
It sets and is typically tested with engine offer tail gas, this detection method is no doubt effective, but for testing for a long time,
The tail gas of engine high energy consumption, generation causes serious pollution to the environment.
Utility model content
A kind of durability test apparatus of vehicle exhaust pressure sensor, including pressure sensor tests exemplar, pressure medium
Bucket, insulating box, pressure sensor, air inlet stop valve, pressure monitor, outlet shut-off valve and simulation power plant, wherein：It is described
Pressure medium bucket side is connect with air inlet pipe, and the air inlet pipe is equipped with pressure sensor and air inlet stop valve, and the other side passes through
Pipeline with simulation power plant connect, also side is connected with outlet shut-off valve one end, the outlet shut-off valve other end and
Pressure sensor tests exemplar connects, and the pressure sensor tests exemplar and pressure medium bucket position are in insulating box, the pressure
Power monitor is electrically connected with pressure sensor tests exemplar and pressure sensor respectively.
A kind of durability test apparatus of vehicle exhaust pressure sensor, wherein：The simulation power plant includes cylinder body, institute
It states cylinder body and is equipped with compression pump upper body, set that there are two dielectric cavity, two dielectric cavity intermediate laterals in the compression pump upper body
Equipped with rubber diaphragm, compressed by upper spring supporting spring and lower spring supporting spring in the middle part of the rubber diaphragm, the upper spring supporting spring top
It is connect with upper spring one end, the upper spring other end is connect with dielectric cavity top, the lower spring supporting spring bottom end and lower spring
One end connects, and the lower spring other end is connect with dielectric cavity bottom end, and compression pump upper body top is equipped with pressure output pipe, described
Pressure output pipe one end is connected with dielectric cavity, and the other end is connect by pipeline with pressure medium bucket, passes through bolt and pressure under cylinder body
Power pump bottom case is fixedly connected, and one side roof part of compression pump bottom case is equipped with compression pump bottom case pneumostome, and inner chamber of cylinder block passes through pressure
Transfer hole is connected to dielectric cavity, and inner chamber of cylinder block is equipped with piston, and the piston is connected by fixing axle on rocking arm and one end activity
It connecing, the rocking arm other end is connect by fixing axle under rocking arm with cam activation, and the cam is connect with transmission shaft one end pivot pin,
Cam is located in compression pump bottom case, and the transmission shaft other end passes through compression pump bottom case inner wall and fixed by shaft coupling and motor
Connection.
A kind of durability test apparatus of vehicle exhaust pressure sensor, wherein：Compression pump upper body side is equipped with pressure
Power adjustment hole, described pressure regulating hole one end are connected with dielectric cavity, and the other end is equipped with pressure and adjusts cover board.
The technique effect and advantage of the utility model：Piston motion is driven to generate air pressure fluctuation, simulation by using motor
Pressure vibration when engine exhaust；The medium of pressure and isolation experiment intracavitary is transmitted with diaphragm；It is seen online with pressure monitor
Examine the pressure condition of testpieces situation and medium；With insulating box speeding-up simulation temperature burn into ageing environment；Experimental rig structure letter
Single, low energy consumption for opposite engine bench test, and test effect is good.
Description of the drawings
Fig. 1 is the system diagram of the utility model.
Fig. 2 is the front view of the simulation power plant of the utility model.
Fig. 3 is the left view of the simulation power plant of the utility model.
In figure：1 pressure sensor tests exemplar, 2 pressure medium buckets, 3 insulating boxs, 4 pressure sensors, 5 air inlet stop valves,
6 pressure monitors, 7 outlet shut-off valves, 8 simulation power plants, 9 pressure output pipes, spring supporting spring, 11 rubber diaphragms, 12 on 10
Lower spring supporting spring, 13 pressure regulating holes, 14 pressure adjust fixing axle, 18 under cover board, 15 pressure transmission holes, 16 cylinder bodies, 17 rocking arms
Cam, 19 compression pump upper bodies, 20 dielectric cavities, spring on 21,22 times springs, 23 pistons, fixing axle, 25 compression pumps on 24 rocking arms
Bottom case pneumostome, 26 rocking arms, 27 transmission shafts, 28 compression pump bottom cases, 29 motors.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of durability test apparatus of vehicle exhaust pressure sensor, including pressure sensor tests exemplar
1, pressure medium bucket 2, insulating box 3, pressure sensor 4, air inlet stop valve 5, pressure monitor 6, outlet shut-off valve 7 and simulation are dynamic
Power apparatus 8, wherein：2 side of pressure medium bucket is connect with air inlet pipe, the air inlet pipe be equipped with pressure sensor 4 and into
Gas shut-off valve 5, the other side are connect by pipeline with simulation power plant 8, and also side is connected with 7 one end of outlet shut-off valve,
7 other end of outlet shut-off valve is connect with pressure sensor tests exemplar 1, the pressure sensor tests exemplar 1 and medium
Pressure pot 2 is located in insulating box 3, and the pressure monitor 6 is electric with pressure sensor tests exemplar 1 and pressure sensor 4 respectively
Property connection.
Please refer to Fig. 2 and Fig. 3, wherein simulation power plant 8 includes cylinder body 16, and the cylinder body 16 is equipped on compression pump
Ontology 19 is set in the compression pump upper body 19 there are two dielectric cavity 20, and two 20 intermediate laterals of dielectric cavity are equipped with rubber diaphragm
11, rubber diaphragm 11 can be effectively isolated the dew of the preventing gas stopping leak in pressure medium bucket 2, and 11 middle part of the rubber diaphragm is by upper bullet
Spring bracket piece 10 and lower spring supporting spring 12 compress, and upper 10 top of spring supporting spring is connect with 21 one end of upper spring, the upper spring
21 other ends are connect with 20 top of dielectric cavity, and lower 12 bottom end of spring supporting spring is connect with lower 22 one end of spring, the lower spring
22 other ends are connect with 20 bottom end of dielectric cavity, and the setting of upper spring 21 and lower spring 22 can be to avoid rubber diaphragm 11 in piston 23
The pneumatic vibrating tearing generated when movement, 19 top of compression pump upper body is equipped with pressure output pipe 9, the pressure output pipe 9 one
End is connected with dielectric cavity 20, and the other end is connect by pipeline with pressure medium bucket 2, and cylinder body 16 times passes through bolt and compression pump bottom case
28 are fixedly connected, and 28 1 side roof part of compression pump bottom case is equipped with compression pump bottom case pneumostome 25, and 16 inner cavity of cylinder body passes through pressure
Transfer hole 15 is connected to dielectric cavity 20,16 inner cavity of cylinder body be equipped with piston 23, the piston 23 by fixing axle on rocking arm 24 with shake
26 one end of arm is flexibly connected, and 26 other end of the rocking arm is flexibly connected by fixing axle under rocking arm 17 with cam 18, the cam
18 connect with 27 one end pivot pin of transmission shaft, and cam 18 is located in compression pump bottom case 28, and 27 other end of the transmission shaft passes through pressure
Pump 28 inner wall of bottom case is simultaneously fixedly connected by shaft coupling with motor 29.
Wherein, 19 side of compression pump upper body is equipped with pressure regulating hole 13,13 one end of the pressure regulating hole and Jie
Matter chamber 20 is connected, and the other end is equipped with pressure and adjusts cover board 14, by adjusting 20 bottom end of dielectric cavity separated by rubber diaphragm 11
Pressure adjusts the pressure oscillation in pressure medium bucket 2.
Operation principle：First turn on the work of insulating box 3, keep temperature in insulating box 3, close outlet shut-off valve 7, open into
Gas shut-off valve 5 is filled with the gas of simulated automotive tail gas in pressure medium bucket 2, and pressure sensor 4 monitors in pressure medium bucket 2
Pressure closes air inlet stop valve 5 when the display of pressure monitor 6 reaches specified pressure, opens simulation power plant 8, motor 29
It is moved with piston 23 by cam 18 and rocking arm 26 and generates air pressure fluctuation, which is transferred to Jie by rubber diaphragm 11
In matter pressure pot 2, the pressure change in pressure medium bucket 2 drives the pressure oscillation of pressure sensor 4, is adjusted by adjusting pressure
Cover board 14 keeps the pressure oscillation that the pressure sensor 4 in pressure medium bucket 2 is monitored horizontal close to normal automotive exhaust emissions,
At this point, opening outlet shut-off valve 7, the pressure change of pressure sensor tests exemplar 1 is monitored by pressure monitor 6, and is started
The time is recorded, when pressure monitor 6 monitors the pressure change exception of pressure sensor tests exemplar 1, the time is recorded, can count
Calculate the durability time of pressure sensor tests exemplar 1.It is detected using engine operating generation tail gas compared to traditional
Pressure sensor tests exemplar is tested, and the present invention can reduce the consumption of fuel oil, is reduced environmental pollution, is replaced using motor
In generation, only consumes part electric energy, and is easy to be adjusted to optimum state, and monitoring is convenient, and test effect is good.
Claims (3)
1. a kind of durability test apparatus of vehicle exhaust pressure sensor, including pressure sensor tests exemplar（1）, pressure medium
Bucket（2）, insulating box（3）, pressure sensor（4）, air inlet stop valve（5）, pressure monitor（6）, outlet shut-off valve（7）And simulation
Power plant（8）, it is characterised in that：The pressure medium bucket（2）Side is connect with air inlet pipe, and the air inlet pipe is equipped with pressure
Sensor（4）And air inlet stop valve（5）, the other side passes through pipeline and simulation power plant（8）Connection, also side are cut with outlet
Only valve（7）One end is connected, the outlet shut-off valve（7）The other end and pressure sensor tests exemplar（1）Connection, the pressure
Biosensor assay exemplar（1）With pressure medium bucket（2）Positioned at insulating box（3）It is interior, the pressure monitor（6）It is passed respectively with pressure
Sensor tests exemplar（1）And pressure sensor（4）It is electrically connected.
2. a kind of durability test apparatus of vehicle exhaust pressure sensor according to claim 1, it is characterised in that：It is described
Simulate power plant（8）Including cylinder body（16）, the cylinder body（16）It is equipped with compression pump upper body（19）, on the compression pump this
Body（19）Dielectric cavity there are two inside setting（20）, two dielectric cavities（20）Intermediate lateral is equipped with rubber diaphragm（11）, the rubber membrane
Piece（11）Middle part is by upper spring supporting spring（10）With lower spring supporting spring（12）It compresses, the upper spring supporting spring（10）Top and upper spring
（21）One end connects, the upper spring（21）The other end and dielectric cavity（20）Top connects, the lower spring supporting spring（12）Bottom end
With lower spring（22）One end connects, the lower spring（22）The other end and dielectric cavity（20）Bottom end connects, compression pump upper body
（19）Top is equipped with pressure output pipe（9）, the pressure output pipe（9）One end and dielectric cavity（20）It is connected, the other end passes through pipe
Road and pressure medium bucket（2）Connection, cylinder body（16）Pass through bolt and compression pump bottom case down（28）It is fixedly connected, the compression pump bottom
Shell（28）One side roof part is equipped with compression pump bottom case pneumostome（25）, cylinder body（16）Inner cavity passes through pressure transmission hole（15）With dielectric cavity
（20）Connection, cylinder body（16）Inner cavity is equipped with piston（23）, the piston（23）Pass through fixing axle on rocking arm（24）With rocking arm（26）
One end is flexibly connected, the rocking arm（26）The other end passes through fixing axle under rocking arm（17）With cam（18）Flexible connection, it is described convex
Wheel（18）With transmission shaft（27）One end pivot pin connection, cam（18）Positioned at compression pump bottom case（28）It is interior, the transmission shaft（27）Separately
One end passes through compression pump bottom case（28）Inner wall simultaneously passes through shaft coupling and motor（29）It is fixedly connected.
3. a kind of durability test apparatus of vehicle exhaust pressure sensor according to claim 2, it is characterised in that：It is described
Compression pump upper body（19）Side is equipped with pressure regulating hole（13）, the pressure regulating hole（13）One end and dielectric cavity（20）Phase
Even, the other end is equipped with pressure and adjusts cover board（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154422.8U CN207894552U (en) | 2018-01-30 | 2018-01-30 | A kind of durability test apparatus of vehicle exhaust pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154422.8U CN207894552U (en) | 2018-01-30 | 2018-01-30 | A kind of durability test apparatus of vehicle exhaust pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207894552U true CN207894552U (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820154422.8U Active CN207894552U (en) | 2018-01-30 | 2018-01-30 | A kind of durability test apparatus of vehicle exhaust pressure sensor |
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| CN (1) | CN207894552U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702717A (en) * | 2019-02-01 | 2019-05-03 | 西安翔辉航空科技有限公司 | Rocker arm and two-freedom motion platform comprising the rocker arm |
| CN110715764A (en) * | 2019-10-24 | 2020-01-21 | 中互电气(江苏)有限公司 | Sensor with strong moisture-proof capability |
| CN112284610A (en) * | 2020-10-14 | 2021-01-29 | 山东交通学院 | Gas tank for detecting automobile pressure sensor |
-
2018
- 2018-01-30 CN CN201820154422.8U patent/CN207894552U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702717A (en) * | 2019-02-01 | 2019-05-03 | 西安翔辉航空科技有限公司 | Rocker arm and two-freedom motion platform comprising the rocker arm |
| CN110715764A (en) * | 2019-10-24 | 2020-01-21 | 中互电气(江苏)有限公司 | Sensor with strong moisture-proof capability |
| CN112284610A (en) * | 2020-10-14 | 2021-01-29 | 山东交通学院 | Gas tank for detecting automobile pressure sensor |
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