CN107748059B - A kind of test macro for being padded in exhaust emission control device - Google Patents
A kind of test macro for being padded in exhaust emission control device Download PDFInfo
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- CN107748059B CN107748059B CN201710941703.8A CN201710941703A CN107748059B CN 107748059 B CN107748059 B CN 107748059B CN 201710941703 A CN201710941703 A CN 201710941703A CN 107748059 B CN107748059 B CN 107748059B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Abstract
The invention discloses a kind of test macros for padding in exhaust emission control device, wherein includes: that the first gearshift is connect with heating device, the first gearshift is used for the movement of driving heating device；Heating device is heated for treating test pads；First force snesor is connect with heating device and the control device respectively, and the first force snesor is used to test the expansive force of liner to be tested when liner to be tested heating, and the expansive force of the liner to be tested of measurement is sent to control device；Temperature control device is connect with heating device and control device respectively, the temperature control instruction that temperature control device is sent for receiving control device, and the temperature for controlling heating device and treating test pads heating is instructed according to temperature control；The expansive force for the liner to be tested that control device is used to receive carries out data analysis, obtains the face pressure change curve of liner to be tested.The performance test to liner is realized provided by the present invention for the test macro padded in exhaust emission control device.
Description
Technical field
The present invention relates to the field of test technology of exhaust emission control device, more particularly to one kind to be used for exhaust gas measuring
The test macro padded in device.
Background technique
Along with the decline of vehicle price and the improvement of consumer environment, it is more than 10% that China's automobile market, which remains every year,
Growth rate, however, automobile also brings a heavy problem while offering convenience to society, i.e. motor vehicle exhaust emission is dirty
Dye.Solve motor vehicle emission environmental pollution harm, it has also become the important topic that major automobile vendor, the world is studied for many years it
One.A wherein big important measures --- exhaust emission control device passes through the honeycomb ceramic carrier containing noble coatings such as Pb
It converts the pernicious gas in tail gas to harmless CO2, N2 and H20, motor vehicle exhaust emission is made to be effectively controlled.
As the core element of exhaust emission control device, the usual wall thickness of honeycomb ceramic carrier is very thin, is easy to be impacted
And vibration damage.Violence in assembling process damages, and jolting in engine luggine and driving process is likely to lead to honeycomb
Ceramic monolith is damaged, and exhaust emission control device is made to fail.In order to guarantee that the exhaust gas measuring using honeycomb ceramic carrier fills
The service life is set, needs to protect fragile honeycomb ceramic carrier using a kind of padded coaming.
Liner is used as a kind of good exhaust emission control device buffer layer, mainly includes fiber, binder and expansion
Property material.Liner is mounted between metal shell and honeycomb ceramic carrier, is coated on the outside of honeycomb ceramic carrier.Due to containing swollen
Swollen property material, liner thickness can be continuously increased with the raising of environment temperature, so as to make up metal shell well
The difference of thermal expansion coefficient between honeycomb ceramic carrier provides enough sealing retentivities, while playing heat-insulated, damping work
With, be guarantee exhaust emission control device service life and trouble free service important component.
In view of the important function of liner, carrying out experimental study to it, it is very important.
Liner is required to provide the retentivity of enough fastening honeycomb ceramic carriers, and the retentivity excessive cannot be led
Cause carrier broken；There is good corrosion resistance to severe working environment and tail gas；Liner must also be old in ceramic monolith
Changing in the service life has mutually good rock-steady structure；Since automobile exhaust temperature change is larger, high temperature can exceed that 800 DEG C, therefore serve as a contrast
Pad must also high temperature resistant.
Currently, the abnormal lag of performance testing equipment construction of liner, can not effectively verify the reliability of liner, for difference
Operating condition is needed using corresponding qualified liner.Due to lacking necessary performance testing equipment, enterprise is to existing product
Evaluation and the release of new product are by serious influence.
Therefore, how the test technology urgently to be resolved as those skilled in the art is carried out to the performance of liner to ask
Topic.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art, provide a kind of for exhaust gas discharge control
The test macro padded in device processed, to solve the problems of the prior art.
As one aspect of the present invention, a kind of test macro for padding in exhaust emission control device is provided,
In, the test macro includes: the first gearshift, heating device, the first force snesor, temperature control device and control device,
First gearshift is connect with the heating device, and first gearshift is for driving the heating to fill
The movement set is to change the thickness of liner to be tested；
The heating device is heated for treating test pads；
First force snesor is connect with the heating device and the control device respectively, first force snesor
For testing the expansive force of the liner to be tested when the liner heating to be tested, and by the liner to be tested of measurement
Expansive force be sent to the control device；
The temperature control device is connect with the heating device and the control device respectively, and the temperature control device is for receiving
The temperature control instruction that the control device is sent, and the heating device is controlled according to temperature control instruction, the liner to be tested is heated
Temperature；
The expansive force for the liner to be tested that the control device is used to receive carries out data analysis, obtains described
The face pressure change curve of liner to be tested.
Preferably, the heating device include first heating fixture block and second heating fixture block, it is described first heating fixture block with
The first gearshift connection, the second heating fixture block are connect with first force snesor, the first heating fixture block
It is connect with the temperature control device with the second heating fixture block, the first heating fixture block can be in first gearshift
Driving under moved, when the heating device heats the liner to be tested, it is described it is to be tested liner be located at
Between the first heating fixture block and the second heating fixture block.
Preferably, the test macro includes: steel plate, second displacement device and the second force snesor,
One end of the steel plate is connect with second force snesor and second displacement device, and the other end of the steel plate is used
In being arranged between two liners to be tested, the steel plate can move under the driving of the second displacement device；
Second force snesor is connect with the control device, and second force snesor is used for mobile in the steel plate
When detect normal force and frictional force between the steel plate and the liner to be tested, and the normal force that will test and rub
It wipes power and is sent to the control device；
The control device is used to carry out data analysis according to the normal force and frictional force that receive, obtains not equality of temperature
The liner to be tested under degree and the coefficient of friction between the steel plate.
Preferably, first gearshift and the second displacement device include servo motor.
Preferably, the control device includes that face pressure data analysis module, coefficient of friction data analysis module and temperature are set
Cover half block,
The face pressure data analysis module is used to carry out data analysis to the expansive force, obtains the face pressure of liner to be tested
Change curve；
The coefficient of friction data analysis module is used to carry out data analysis to the frictional force and normal force and temperature,
Obtain the liner to be tested under different temperatures and the coefficient of friction between the steel plate；
The temperature setting module is used to send temperature control instruction to the temperature control device.
Preferably, the temperature control instruction includes that heating device treats the operating temperature of test pads heating, heating device pair
The actual condition temperature and heating device of liner heating to be tested treat the rate of test pads heating.
Preferably, the control device further includes aging durable test data analysis module, the durable data of aging point
Analysis module according to the coefficient of friction of the liner to be tested and the face pressure change curve of the liner to be tested for being counted
According to analysis, the aging retentivity of the liner to be tested is obtained.
Preferably, first gearshift is for driving the heating device along the thickness direction of the liner to be tested
Mobile, the second displacement device is used to that the steel plate to be driven to move along the direction perpendicular to first gearshift.
Preferably, the temperature control device controls the temperature of heating device by way of air-cooled or water cooling.
Provided by the present invention for the test macro padded in exhaust emission control device, by being heated to liner,
It is capable of the actual working environment temperature of simulated exhaust emission control system, tests out the face pressure of liner, realizes the property to liner
It can test, so as to effectively verify the reliability of liner.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is provided by the present invention for the structural schematic diagram of the test macro padded in exhaust emission control device.
Fig. 2 is provided by the present invention for another structural representation of the test macro padded in exhaust emission control device
Figure.
Fig. 3 is the structural schematic diagram of exhaust emission control device provided by the invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As one aspect of the present invention, a kind of test macro for padding in exhaust emission control device is provided,
In, as shown in Figure 1, the test macro includes: the first gearshift 1, heating device 2, the first force snesor 5, temperature control device 6
With control device 7,
First gearshift 1 is connect with the heating device 2, and first gearshift 1 is for driving described add
The movement of thermal 2 with change it is to be tested liner 4 thickness；
The heating device 2 is heated for treating test pads 4；
First force snesor 5 is connect with the heating device 2 and the control device 7 respectively, and first power passes
Sensor 5 be used for when it is described it is to be tested liner 4 heating when test it is described it is to be tested liner 4 expansive force, and by described in measurement to
The expansive force of test pads 4 is sent to the control device 7；
The temperature control device 6 is connect with the heating device 2 and the control device 7 respectively, and the temperature control device 6 is used for
The temperature control instruction that the control device 7 is sent is received, and the heating device 2 is controlled to the lining to be tested according to temperature control instruction
The temperature that pad 4 heats；
The expansive force for the liner 4 to be tested that the control device 7 is used to receive carries out data analysis, obtains institute
State the face pressure change curve of liner 4 to be tested.
Provided by the present invention for the test macro padded in exhaust emission control device, by being heated to liner,
It is capable of the actual working environment temperature of simulated exhaust emission control system, tests out the face pressure of liner, realizes the property to liner
It can test, so as to effectively verify the reliability of liner.
Specifically, described as shown in Figure 1, the heating device 2 includes the first heating fixture block 21 and second heats fixture block 22
First heating fixture block 21 is connect with first gearshift 1, and the second heating fixture block 22 and first force snesor 5 connect
It connects, the first heating fixture block 21 and the second heating fixture block 22 are connect with the temperature control device 6, the first heating folder
Block 21 can be moved under the driving of first gearshift 1, when the heating device 2 is to the liner 4 to be tested
When being heated, the liner 4 to be tested is located between the first heating fixture block 21 and the second heating fixture block 22.
In order to realize the test for the coefficient of friction for treating test pads, the test macro includes: steel plate 3, second displacement
Device 8 and the second force snesor 9,
One end of the steel plate 3 is connect with second force snesor 9 and second displacement device 8, the steel plate 3 it is another
For being arranged between two liners 4 to be tested, the steel plate 3 can move under the driving of the second displacement device 8 at end；
Second force snesor 9 is connect with the control device 7, and second force snesor 9 is used in the steel plate 3
The normal force and frictional force between the steel plate 3 and the liner 4 to be tested, and the normal direction that will test are detected when mobile
Power and frictional force are sent to the control device 7；
The control device 7 is used to carry out data analysis according to the normal force and frictional force that receive, obtains difference
At a temperature of it is described it is to be tested liner the steel plate between coefficient of friction.
Preferably, first gearshift 1 and the second displacement device 8 include servo motor.The servo electricity
The controllable displacement of machine, and different movement velocitys is provided.
When the face pressure for treating test pads is tested, specifically, the first heating is set to add block by servo motor driving
21, which treat test pads 4, applies load, controls the thickness of liner 4 to be tested, measures liner face pressure by the first force snesor 5.
It should be noted that the first heating fixture block 21 and the second heating fixture block 22 are quartz glass material, have resistance to
The advantages that high temperature, the coefficient of expansion be low, thermal shock resistance influences test result smaller under the conditions of hot test.
As the specific embodiment of the control device 7, the control device includes face pressure data analysis module, friction
Coefficient data analysis module and temperature setting module,
The face pressure data analysis module is used to carry out data analysis to the expansive force, obtains the face pressure of liner to be tested
Change curve；
The coefficient of friction data analysis module is used to carry out data analysis to the frictional force and normal force and temperature,
Obtain the liner to be tested under different temperatures and the coefficient of friction between the steel plate；
The temperature setting module is used to send temperature control instruction to the temperature control device.
Preferably, the temperature control instruction includes that heating device treats the operating temperature of test pads heating, heating device pair
The actual condition temperature and heating device of liner heating to be tested treat the rate of test pads heating.
In order to realize that specifically, the control device 7 further includes to the aging durability test of the liner 4 to be tested
Aging durable test data analysis module, the durable data analysis module of aging are used for the friction according to the liner to be tested
The face pressure change curve of coefficient and the liner to be tested carries out data analysis, and the aging for obtaining the liner to be tested is kept
Power.
Specifically, first gearshift 1 is used for the thickness for driving the heating device 2 along the liner 4 to be tested
Direction is mobile, and the second displacement device 8 is used to drive the steel plate 3 along the direction shifting perpendicular to first gearshift 1
It is dynamic.
It should be understood that by taking Fig. 1 and direction shown in Fig. 2 as an example, when to the 4 progress face pressure test of liner to be tested
When, first gearshift 1 can drive the heating device 2 mobile in vertical direction, to change the liner 4 to be tested
Thickness, when to it is described it is to be tested liner 4 carry out PVvalue testing when, the second displacement device 8 can drive 3 edge of steel plate
Horizontal direction is mobile.
Preferably, the temperature control device 6 controls the temperature of heating device by way of air-cooled or water cooling.
In addition, the settable rate of heat addition of the temperature device 6 and temperature, can adjust temperature according to temperature sensor feedback information
Degree.
Provided by the present invention for the test macro padded in exhaust emission control device, can be required according to different tests,
Accurate control liner testpieces temperature and encapsulation gap thickness simulate the gasket performance under various different operating conditions, for cushioning product
Evaluation and the release of new product very big help is provided.Provided by the present invention for the survey padded in exhaust emission control device
Test system also has simple structure and reasonable design, is capable of the actual working environment temperature of simulated exhaust emission control system, surveys
Try out the face pressure of liner, aging durability, the advantage of coefficient of friction.
It should be noted that the temperature control device 6 passes through temperature sensor and cooling device control heating fixture block temperature.It watches
It is open to take motor control buffer gap, simulation liner quick aging process.Serve Motor Control steel plate is mobile to drive steel plate
Fricting movement is generated between gasket material exemplar；The present invention tests feedback liner normal direction pressure using force snesor and cuts
Butt to frictional force the coefficient of friction between output liner and steel plate is calculated by data analysis system.
The test macro provided by the present invention for padding in exhaust emission control device is done below with reference to Fig. 1 to Fig. 3
It is further described.
As shown in Figure 1, treating test pads 4 as the first specifically embodiment and carrying out face pressure test.
Specifically, as seen from Figure 3, liner 4 to be tested is mounted between metal shell 10 and honeycomb ceramic carrier 11,
It is to be tested in technical process to pad 4 when being encapsulated into exhaust emission control device, in order to guarantee to have enough retentivities, assembly
Thickness afterwards is about 65% or so of thickness before assembling.If the compressing force of assembly is excessive, it is possible to crush honeycomb ceramic carrier
11, so face pressure test need to be carried out to evaluate choosing whether properly for liner 4 to be tested.
Liner 4 to be tested can choose the tests exemplar of 5cm × 5cm, by the tests exemplar the first heating placed below
It is preferably servo motor by first position device 1(between fixture block 21 and the second heating fixture block 22) heating of process control first
21 compresses liner 4 of fixture block is to required thickness (the encapsulation gap between metal shell 10 and honeycomb ceramic carrier 11).First power sensing
Device 5 measures encapsulation pressure, and the encapsulation face pressure of liner 4 to be tested under the conditions of different encapsulation is calculated in control device 7.
Since liner 4 to be tested is filled between metal shell 10 and honeycomb ceramic carrier 11, in entire high-temperature expansion mistake
The expansion of Cheng Zhong, liner 4 to be tested are limited by metal shell 10 and honeycomb ceramic carrier 11, the expansion of liner 4 to be tested
Power can generate biggish face pressure, be calculated by the two thermal expansion coefficient and size it can be concluded that between the two to be measured under actual condition
Examination 4 thickness of liner.
In order to simulate temperature variations of the liner 4 to be tested in practical work process, heating device 2 is in more than ten minutes
Time in, about 4 two sides of liner to be tested are heated separately to by required operating temperature by temperature control device 6 and (are respectively corresponded
The temperature padded between 4 and metal shell 10, liner 4 to be tested and honeycomb ceramic carrier to be tested in actual exhaust gas discharge process
Temperature between 11, by surveying experience accumulation).According to 5 feedback data of the first force snesor, control device 7 is not it can be concluded that
With under operational temperature conditions, the face pressure change curve of liner 4 to be tested.
By testing obtained 4 face pressure data of liner to be tested, it can determine whether the compressing force of selected liner 4 to be tested surpasses
The strength degree for crossing the receiving of honeycomb ceramic carrier 11 avoids generating the crushing phenomenon of honeycomb ceramic carrier 11, for liner 4 to be tested
Evaluation provides foundation.
As shown in Fig. 2, carrying out PVvalue testings to liner 4 to be measured as second of specifically embodiment.
Specifically, the test of two pieces of liners 4 to be tested is placed between the first heating fixture block 21 and the second heating fixture block 22
Exemplar, steel plate 3 are placed between two pieces of exemplars.Be preferably servo motor by first position device 1() in process control first plus
Hot fixture block 21 compresses liner 4 to be tested to required thickness, and temperature device 6 controls heating device 2 and is warming up to actual condition temperature, the
Two force snesors, 9 Real-time Feedback measures the normal force and frictional force of liner 4 to be tested, and what control device 7 recorded goes out Temperature-time
To be tested under different temperatures pad between 4 and steel plate 3 is finally calculated in change curve, frictional force-normal pressure change curve
Coefficient of friction.
As shown in Figure 1, treating test pads 4 as the third specifically embodiment and carrying out aging durable test.
Specifically, liner 4 to be tested is mounted between metal shell 10 and honeycomb ceramic carrier 11, high-temperature tail gas drain strip
Under part, metal shell 10 and honeycomb ceramic carrier 11 are because of the difference of thermal expansion coefficient, and the two gap increases, while liner 4 to be tested
Expanded by heating makes up gap.It is cooling that the two gap is caused to be restored when exhaust emission control device stops working, liner 4 to be tested
It is compressed.Test device for liner 4 to be tested in exhaust emission control device is exactly such a expansion-pressure of Fast simulation
The process that contracting-expansion constantly recycles.Measure the retentivity after aging by 4 aging durable tests of liner to be tested, evaluation to
Whether test pads 4 are able to satisfy the life requirements of exhaust emission control device.
Specifically, as shown in Figure 1, liner 4 to be tested can choose the tests exemplar of 5cm × 5cm, by the tests exemplar
It is preferably servo motor by first position device 1(between first heating fixture block 21 placed below and the second heating fixture block 22)
Process control first heats 21 compresses liner 4 of fixture block to required thickness.4 two sides of liner to be tested are controlled by temperature control device 6
Temperature is heated to actual condition temperature within more than ten minutes, by 2 gap open of heating device to actual condition while heating
Under it is to be tested liner 4 gap thickness.Change compression-release-compression by control gap constantly to recycle, be tied after circulation 1000 times
Beam finally obtains remaining encapsulation face pressure after 4 quick aging processes of liner to be tested by control device 7, further according to coefficient of friction
Obtain retentivity after its aging.The thrust that exhaust back pressure and vibration acceleration are constituted is calculated, confirms that liner 4 to be tested is
It is no to provide enough retentivities for honeycomb ceramic carrier 11.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a kind of test macro for being padded in exhaust emission control device, which is characterized in that the test macro includes:
One gearshift, heating device, the first force snesor, temperature control device and control device,
First gearshift is connect with the heating device, and first gearshift is for driving the heating device
The mobile thickness to change liner to be tested；
The heating device is heated for treating test pads；
First force snesor is connect with the heating device and the control device respectively, and first force snesor is used for
Test the expansive force of the liner to be tested when the liner heating to be tested, and by the swollen of the liner to be tested of measurement
Expansive force is sent to the control device；
The temperature control device is connect with the heating device and the control device respectively, and the temperature control device is described for receiving
The temperature control instruction that control device is sent, and the heating device is controlled to the temperature of the liner heating to be tested according to temperature control instruction
Degree；
The expansive force for the liner to be tested that the control device is used to receive carries out data analysis, obtains described to be measured
Try the face pressure change curve of liner.
2. the test macro according to claim 1 for being padded in exhaust emission control device, which is characterized in that described
Heating device includes the first heating fixture block and the second heating fixture block, and the first heating fixture block and first gearshift connect
It connects, the second heating fixture block is connect with first force snesor, the first heating fixture block and the second heating fixture block
It is connect with the temperature control device, the first heating fixture block can be moved under the driving of first gearshift,
When the heating device heats the liner to be tested, it is described it is to be tested liner be located at it is described first heating fixture block and
Between the second heating fixture block.
3. the test macro according to claim 1 or 2 for being padded in exhaust emission control device, which is characterized in that
The test macro includes: steel plate, second displacement device and the second force snesor,
One end of the steel plate is connect with second force snesor and second displacement device, and the other end of the steel plate is for setting
It sets between two liners to be tested, the steel plate can move under the driving of the second displacement device；
Second force snesor is connect with the control device, and second force snesor is used to examine when the steel plate is mobile
The normal force and frictional force surveying the normal force and frictional force between the steel plate and the liner to be tested, and will test
It is sent to the control device；
The control device is used to carry out data analysis according to the normal force and frictional force that receive, obtains under different temperatures
It is described it is to be tested liner the steel plate between coefficient of friction.
4. the test macro according to claim 3 for being padded in exhaust emission control device, which is characterized in that described
First gearshift and the second displacement device include servo motor.
5. the test macro according to claim 3 for being padded in exhaust emission control device, which is characterized in that described
Control device includes face pressure data analysis module, coefficient of friction data analysis module and temperature setting module,
The face pressure data analysis module is used to carry out data analysis to the expansive force, obtains the face pressure variation of liner to be tested
Curve；
The coefficient of friction data analysis module is used to carry out data analysis to the frictional force and normal force and temperature, obtains
The liner to be tested under different temperatures and the coefficient of friction between the steel plate；
The temperature setting module is used to send temperature control instruction to the temperature control device.
6. the test macro according to claim 5 for being padded in exhaust emission control device, which is characterized in that described
Temperature control instruction includes that heating device treats the operating temperature of test pads heating, heating device treats the reality that test pads heat
Working temperature and heating device treat the rate of test pads heating.
7. the test macro according to claim 5 for being padded in exhaust emission control device, which is characterized in that described
Control device further includes aging durable test data analysis module, the durable data analysis module of aging be used for according to it is described to
The face pressure change curve of the coefficient of friction of test pads and the liner to be tested carries out data analysis, obtains described to be tested
The aging retentivity of liner.
8. the test macro according to claim 3 for being padded in exhaust emission control device, which is characterized in that described
First gearshift is for driving the heating device to move along the thickness direction of the liner to be tested, the second displacement dress
It sets for driving the steel plate to move along the direction perpendicular to first gearshift.
9. the test macro according to claim 1 for being padded in exhaust emission control device, which is characterized in that described
Temperature control device controls the temperature of heating device by way of air-cooled or water cooling.
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| CN201710941703.8A CN107748059B (en) | 2017-10-11 | 2017-10-11 | A kind of test macro for being padded in exhaust emission control device |
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| CN201710941703.8A CN107748059B (en) | 2017-10-11 | 2017-10-11 | A kind of test macro for being padded in exhaust emission control device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027558Y (en) * | 2006-07-31 | 2008-02-27 | 刘丽华 | Carbon smoke particulate emission purifier for heavy diesel engine |
| CN203705157U (en) * | 2013-12-31 | 2014-07-09 | 北京九州一轨隔振技术有限公司 | Test tool |
-
2017
- 2017-10-11 CN CN201710941703.8A patent/CN107748059B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027558Y (en) * | 2006-07-31 | 2008-02-27 | 刘丽华 | Carbon smoke particulate emission purifier for heavy diesel engine |
| CN203705157U (en) * | 2013-12-31 | 2014-07-09 | 北京九州一轨隔振技术有限公司 | Test tool |
Non-Patent Citations (1)
| Title |
|---|
| 柴油机尾气催化转化器衬垫的实验研究;袭著坤等;《机械管理开发》;20091231;第24卷(第6期);第47、48页 * |
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