CN104729839B - Testing method and evaluating method for performance of hydraulic tappet - Google Patents
Testing method and evaluating method for performance of hydraulic tappet Download PDFInfo
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Abstract
The invention provides a testing method for performance of a hydraulic tappet. The method includes the following steps that S1, the hydraulic tappet is assembled on an engine; S2, the engine is subjected to running-in; S3, the engine operates at a high idle speed for a first preset time and then operates at an idle speed, and whether noise of the hydraulic tappet is normal is judged; S4, the engine is shut down for a second preset time; S5, the engine operates at the high idle speed for a third preset time and then is shut down for a fourth preset time; S6, every a fifth preset time, the engine is started to operate at the idle speed for a sixth preset time, and noise is recorded every time the hydraulic tappet operates at the idle speed in the sixth preset time. According to the testing method for the performance of the hydraulic tappet, by analyzing and recording the noise of the hydraulic tappet, whether the nose of the hydraulic tappet assembled on the engine is normal can be obtained, the design of the hydraulic tappet can be adjusted in the early stage of a project after an anomaly is found, and follow-up development and a reliability test will not be affected.
Description
Technical field
The present invention relates to the parts performance test technical field of engine valve actuating mechanism, more particularly to a kind of hydraulic pressure is endured
Column performance test method and hydraulic tappet method of evaluating performance.
Background technology
Hydraulic tappet belongs to an important spare part in engine valve actuating mechanism, and its Main Function is to use hydraulic oil
（Usually engine motor oil）Oil pressure carry out valve gap adjustment, make that engine is rapid after starting to eliminate valve clearance, reduce and send out
Valve clearance is brought when motivation operates noise and vibration.
At present, the performance test of hydraulic tappet is mainly by hydraulic tappet sedimentation time tester, and this tester is main
It is applied to hydraulic tappet supplier to detect the performance requirement of hydraulic tappet itself, for main engine factory needs concern
The cooperation of hydraulic tappet and concrete engine after the noise of valve actuating mechanism have no investigation.
Also, the existing noise to engine valve actuating mechanism is studied, and is limited only to the research to valve motion noise,
It is not directed to hydraulic tappet noise category.
The content of the invention
The technical problem to be solved is not consider that hydraulic pressure is endured for existing hydraulic tappet method for testing performance
A kind of defect of the hydraulic tappet noise problem after post and engine cooperation, there is provided hydraulic tappet method for testing performance.
A kind of hydraulic tappet method for testing performance, methods described are embodiments provided to solve above-mentioned technical problem
Including：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
S3, start engine high idle speed and operate and drop back to idle running after the first Preset Time, judge hydraulic tappet now
Whether noise is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise is normal, enter
Next step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, start the Preset Time of engine idling operation the 6th, record hydraulic tappet each time every the 5th Preset Time
The noise of idle running in the 6th Preset Time.
Further, first Preset Time is 1～2 hour.
Further, second Preset Time is more than or equal to 12 hours.
Further, the 3rd Preset Time, the 4th Preset Time and the 5th Preset Time are 1 hour.
Further, the 6th Preset Time is 10～30 seconds.
Further, the break-in of engine is entered according to car load break-in operating mode or engine pedestal break-in operating mode in step S2
OK.
Further, starting engine idling operation 20 times in step S6.
Further, step is also included after step S6：
S7, repeat step S4～S6 is at least twice.
Further, hydraulic tappet to be tested has two groups, and one of which hydraulic tappet has the maximum sedimentation time, separately
One group of hydraulic tappet has the minimum sedimentation time.
Present invention also offers a kind of hydraulic tappet method of evaluating performance, methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine.
S2, break-in is carried out to engine.
S3, start engine high idle speed and operate and drop back to idle running after the first Preset Time, judge hydraulic tappet now
Whether noise is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise is normal, enter
Next step.
S4, engine shut down the second Preset Time.
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating.
S6, start the Preset Time of engine idling operation the 6th, record hydraulic tappet each time every the 5th Preset Time
The noise of idle running in the 6th Preset Time, and the noise of all number of times of record is classified as into one group.
Occurs the abnormal number of times of noise in this group of noise of this group of hydraulic tappet that S7, judgement are obtained, if in this group of hydraulic pressure
Occurs a noise exception in this group of noise of tappet, then the performance evaluation of this group of hydraulic tappet is unqualified；If conversely, at this
There is not noise exception in this group of noise of group hydraulic tappet, then the performance evaluation of this group of hydraulic tappet is qualified.
In addition, present invention also offers another kind of hydraulic tappet method of evaluating performance, methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
S3, start engine high idle speed and operate and drop back to idle running after the first Preset Time, judge hydraulic tappet now
Whether noise is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise is normal, enter
Next step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, start the Preset Time of engine idling operation the 6th, record hydraulic tappet each time every the 5th Preset Time
The noise of idle running in the 6th Preset Time, and the noise of all number of times of record is classified as into one group；
S7, repeat step S4～S6 at least twice, to obtain multigroup noise of this group of hydraulic tappet；
Occurs the number of times of the abnormal group of noise in multigroup noise of this group of hydraulic tappet that S8, judgement are obtained, if in the group
It is minority to occur the abnormal group of noise at least one times in multigroup noise of hydraulic tappet, then the performance evaluation of this group of hydraulic tappet is
It is qualified；If conversely, it is majority, this group of liquid to occur the abnormal group of noise at least one times in multigroup noise of this group of hydraulic tappet
The performance evaluation of pressure tappet is unqualified.
Hydraulic tappet method for testing performance of the invention, is able to record that each time hydraulic tappet is default the described 6th
The noise of idle running in time, so by the noise of the hydraulic tappet of analysis record, can obtain being assembled to after engine
This group of hydraulic tappet noise it is whether abnormal, design that can be in project early stage just to hydraulic tappet after noting abnormalities is adjusted
It is whole, do not interfere with subsequent development and reliability test, it is to avoid sending out after the testing machine and volume production in reliability test stage in later stage
Motivation valve actuating mechanism is damaged.
In addition, the extraordinary noise occurred according to hydraulic tappet, can in addition check sedimentation time and the hydraulic pressure of hydraulic tappet
Whether hydraulic pressure charge oil pressure size in operating after tappet and Engine Matching, verify that the sedimentation time of hydraulic tappet is arranged and close with this
Whether hydraulic pressure charge oil pressure meets requirement in operating after reason and hydraulic tappet and Engine Matching.
Description of the drawings
Fig. 1 is the flow chart of the hydraulic tappet method for testing performance that one embodiment of the invention is provided；
Fig. 2 is the flow chart of the hydraulic tappet method for testing performance that another embodiment of the present invention is provided.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Drawings and Examples, are described in further detail to the present invention.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
As shown in figure 1, the hydraulic tappet method for testing performance that one embodiment of the invention is provided, including：
S1, one group of hydraulic tappet to be tested is assembled to into engine；Preferably, hydraulic tappet to be tested has two groups,
One of which hydraulic tappet has the maximum sedimentation time, and another group of hydraulic tappet has the minimum sedimentation time.So, test
Two groups of hydraulic tappets cover the maximum and minimum of a value of sedimentation time, it is identical as long as this two groups of hydraulic tappets checkings are qualified
The hydraulic tappet of other sedimentation times of design is also inevitable qualified.
S2, break-in is carried out to engine according to car load break-in operating mode or engine pedestal break-in operating mode.If grinding according to car load
Close operating mode carries out break-in to engine, then need engine assembly in advance to car load.
After the completion of S3, engine break-in, start after engine high idle speed operates 1～2 hour and drop back to idle running, judge liquid
Whether pressure tappet noise now is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise
Normally, then into next step.
S4, engine are shut down at least 12 hours.Because the oil pressure of engine operationally hydraulic tappet is full（Engine
When not working, hydraulic tappet draining）, therefore, shut down herein 12 hours and be draining 12 hours, as such, it is possible to simulate hydraulic pressure endure
The real work situation of post（The time that car owner's evening stops was typically greater than or equal to 12 hours）So that test is more partial to true
It is real.
S5, starting engine high idle speed are shut down 1 hour after operating 1 hour.
S6, shutdown started engine idling operation 10～30 seconds in 1 hour every 1 hour afterwards, and record each time endure by hydraulic pressure
The noise of post idle running in 10～30 seconds, the noise of all number of times of step S6 record is classified as one group.Start in the step
The number of times of engine idling operation can be 20 times, i.e. the noise of record hydraulic tappet 20 times.Due to the impact of draining factor, send out
Motivation can only start once for 1 hour, thus in the present embodiment, the 5th Preset Time is engine in 1 hour, i.e. step S6
Often start once, 1 hour need to be shut down.Because car owner is typically stopped a period of time every the disconnected time, therefore shutdown starts for 1 hour
Once, the real work situation of hydraulic tappet is more partial to also for the test for causing hydraulic tappet.
In the embodiment shown in fig. 1, step S6 is only carried out once, in the noise analysis in later stage, if in this group of hydraulic pressure
Occurs a noise exception in this group of noise of tappet, then the test evaluation of this group of hydraulic tappet is not pass through（I.e. this group hydraulic pressure
The performance evaluation of tappet is unqualified）；If conversely, there is not noise exception in this group of noise of this group of hydraulic tappet, being somebody's turn to do
The test evaluation of group hydraulic tappet is to pass through（The performance evaluation of i.e. this group hydraulic tappet is qualified）.
Hydraulic tappet method for testing performance according to the above embodiment of the present invention, is able to record that each time hydraulic tappet is in institute
The noise of idle running in the 6th Preset Time is stated, so by the noise of multigroup hydraulic tappet of analysis record, can be obtained
Whether the noise for being assembled to this group of hydraulic tappet after engine is abnormal, can be in project early stage just to hydraulic tappet after noting abnormalities
Design be adjusted, do not interfere with subsequent development and reliability test, it is to avoid the testing machine in reliability test stage in later stage
And the engine valve actuating mechanism after volume production is damaged.In addition, the extraordinary noise occurred according to hydraulic tappet, can in addition check hydraulic pressure
Hydraulic pressure charge oil pressure size in operating after the sedimentation time of tappet and hydraulic tappet and Engine Matching, with this hydraulic tappet is verified
Sedimentation time whether rationally arrange and whether hydraulic pressure charge oil pressure meets requirement in operating after hydraulic tappet and Engine Matching.
As shown in Fig. 2 the hydraulic tappet method for testing performance that another embodiment of the present invention is provided, including：
S1, one group of hydraulic tappet to be tested is assembled to into engine；Preferably, hydraulic tappet to be tested has two groups,
One of which hydraulic tappet has the maximum sedimentation time, and another group of hydraulic tappet has the minimum sedimentation time.So, test
Two groups of hydraulic tappets cover the maximum and minimum of a value of sedimentation time, it is identical as long as this two groups of hydraulic tappets checkings are qualified
The hydraulic tappet of other sedimentation times of design is also inevitable qualified.
S2, break-in is carried out to engine according to car load break-in operating mode or engine pedestal break-in operating mode.If grinding according to car load
Close operating mode carries out break-in to engine, then need engine assembly in advance to car load.
After the completion of S3, engine break-in, start after engine high idle speed operates 1～2 hour and drop back to idle running, judge liquid
Whether pressure tappet noise now is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise
Normally, then into next step.
S4, engine are shut down at least 12 hours.
S5, starting engine high idle speed are shut down 1 hour after operating 1 hour.
S6, shutdown started engine idling operation 10～30 seconds in 1 hour every 1 hour afterwards, and record each time endure by hydraulic pressure
The noise of post idle running in 10～30 seconds, the noise of all number of times of step S6 record is classified as one group, if in one group of noise
There is a noise exception, then it is assumed that this group of noise is unqualified.Further, since the impact of draining factor, engine 1 hour can only
Start once, thus in the present embodiment, the 5th Preset Time is that engine is often started once in 1 hour, i.e. step S6, is needed
Shut down 1 hour.
S7, repeat step S4～S6 preset times（At least twice）.It for example can be four times.So, step S4～S6 enters
Go 5 times, five groups of noises of hydraulic tappet have always been obtained.
In the embodiment shown in Figure 2, step S4～S6 has been carried out repeatedly, and then has obtained many of same group of hydraulic tappet
Group noise, in the noise analysis in later stage, if it is abnormal to occur noise at least one times in multigroup noise of this group of hydraulic tappet
Group is minority, then the test evaluation of this group of hydraulic tappet is to pass through（The performance evaluation of i.e. this group hydraulic tappet is qualified）；Conversely,
If occurring the abnormal group of noise at least one times in multigroup noise of this group of hydraulic tappet for majority, this group of hydraulic tappet
Test evaluation is not pass through（The performance evaluation of i.e. this group hydraulic tappet is unqualified）.For example, step S4～S6 has been carried out five times,
And then five groups of noises of same group of hydraulic tappet have been obtained, in the noise analysis in later stage, if in the multigroup of this group of hydraulic tappet
It is minority to occur the abnormal group of noise at least one times in noise（It is less than or equal to two groups）, then the test of this group of hydraulic tappet comments
Valency is to pass through（The performance evaluation of i.e. this group hydraulic tappet is qualified）；If conversely, going out in multigroup noise of this group of hydraulic tappet
Now at least one times the abnormal group of noise is majority,（It is more than or equal to three groups）, then testing for this group of hydraulic tappet examination be evaluated as not
Pass through（The performance evaluation of i.e. this group hydraulic tappet is unqualified）.
The present embodiment is more loose when whether hydraulic tappet test passes through evaluating compared with embodiment illustrated in fig. 1, so
The noise that experiment abberation caused by some other factorses, i.e. hydraulic tappet can be avoided is possible to not be hydraulic tappet itself extremely
Bring, but caused due to other external factors such as environment temperature.
In addition, one embodiment of the invention additionally provides a kind of hydraulic tappet method of evaluating performance, methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine.
S2, break-in is carried out to engine.
S3, start engine high idle speed and operate and drop back to idle running after the first Preset Time, judge hydraulic tappet now
Whether noise is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise is normal, enter
Next step.
S4, engine shut down the second Preset Time.
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating.
S6, start the Preset Time of engine idling operation the 6th, record hydraulic tappet each time every the 5th Preset Time
The noise of idle running in the 6th Preset Time, and the noise of all number of times of record is classified as into one group.
Occurs the abnormal number of times of noise in this group of noise of this group of hydraulic tappet that S7, judgement are obtained, if in this group of hydraulic pressure
Occurs a noise exception in this group of noise of tappet, then the performance evaluation of this group of hydraulic tappet is unqualified；If conversely, at this
There is not noise exception in this group of noise of group hydraulic tappet, then the performance evaluation of this group of hydraulic tappet is qualified.
In addition, another embodiment of the present invention additionally provides a kind of hydraulic tappet method of evaluating performance, methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
S3, start engine high idle speed and operate and drop back to idle running after the first Preset Time, judge hydraulic tappet now
Whether noise is normal, if there is extraordinary noise, re-replaces one group of hydraulic tappet and is tested；If noise is normal, enter
Next step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, start the Preset Time of engine idling operation the 6th, record hydraulic tappet each time every the 5th Preset Time
The noise of idle running in the 6th Preset Time, and the noise of all number of times of record is classified as into one group；
S7, repeat step S4～S6 at least twice, to obtain multigroup noise of this group of hydraulic tappet；
Occurs the number of times of the abnormal group of noise in multigroup noise of this group of hydraulic tappet that S8, judgement are obtained, if in the group
It is minority to occur the abnormal group of noise at least one times in multigroup noise of hydraulic tappet, then the performance evaluation of this group of hydraulic tappet is
It is qualified；If conversely, it is majority, this group of liquid to occur the abnormal group of noise at least one times in multigroup noise of this group of hydraulic tappet
The performance evaluation of pressure tappet is unqualified.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of hydraulic tappet method for testing performance, it is characterised in that methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
Idle running is dropped back to after S3, starting engine high idle speed the first Preset Time of operating, hydraulic tappet noise now is judged
It is whether normal, if there is extraordinary noise, re-replace one group of hydraulic tappet and tested；If noise is normal, into next
Step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, every the 5th Preset Time start the Preset Time of engine idling operation the 6th, record each time hydraulic tappet in institute
State the noise of idle running in the 6th Preset Time.
2. hydraulic tappet method for testing performance according to claim 1, it is characterised in that first Preset Time is 1
～2 hours.
3. hydraulic tappet method for testing performance according to claim 1, it is characterised in that second Preset Time is more than
Or equal to 12 hours.
4. hydraulic tappet method for testing performance according to claim 1, it is characterised in that the 3rd Preset Time,
Four Preset Times and the 5th Preset Time are 1 hour, and the 6th Preset Time is 10～30 seconds.
5. hydraulic tappet method for testing performance according to claim 1, it is characterised in that to the mill of engine in step S2
Conjunction is carried out according to car load break-in operating mode or engine pedestal break-in operating mode.
6. hydraulic tappet method for testing performance according to claim 1, it is characterised in that engine is started in step S6 idle
Speed operating 20 times.
7. hydraulic tappet method for testing performance according to claim 1, it is characterised in that also include step after step S6
Suddenly：
S7, repeat step S4～S6 is at least twice.
8. the hydraulic tappet method for testing performance according to claim 1 to 7 any one, it is characterised in that to be tested
Hydraulic tappet has two groups, and one of which hydraulic tappet has the maximum sedimentation time, and another group of hydraulic tappet has minimum sinking
The drop time.
9. a kind of hydraulic tappet method of evaluating performance, it is characterised in that methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
Idle running is dropped back to after S3, starting engine high idle speed the first Preset Time of operating, hydraulic tappet noise now is judged
It is whether normal, if there is extraordinary noise, re-replace one group of hydraulic tappet and tested；If noise is normal, into next
Step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, every the 5th Preset Time start the Preset Time of engine idling operation the 6th, record each time hydraulic tappet in institute
The noise of idle running in the 6th Preset Time is stated, and the noise of all number of times of record is classified as into one group；
Occurs the abnormal number of times of noise in this group of noise of this group of hydraulic tappet that S7, judgement are obtained, if in this group of hydraulic tappet
This group of noise in there is a noise exception, then the performance evaluation of this group of hydraulic tappet is for unqualified；If conversely, in this group of liquid
There is not noise exception in this group of noise of pressure tappet, then the performance evaluation of this group of hydraulic tappet is qualified.
10. a kind of hydraulic tappet method of evaluating performance, it is characterised in that methods described includes：
S1, one group of hydraulic tappet to be tested is assembled to into engine；
S2, break-in is carried out to engine；
Idle running is dropped back to after S3, starting engine high idle speed the first Preset Time of operating, hydraulic tappet noise now is judged
It is whether normal, if there is extraordinary noise, re-replace one group of hydraulic tappet and tested；If noise is normal, into next
Step；
S4, engine shut down the second Preset Time；
The 4th Preset Time is shut down after S5, starting engine high idle speed the 3rd Preset Time of operating；
S6, every the 5th Preset Time start the Preset Time of engine idling operation the 6th, record each time hydraulic tappet in institute
The noise of idle running in the 6th Preset Time is stated, and the noise of all number of times of record is classified as into one group；
S7, repeat step S4～S6 at least twice, to obtain multigroup noise of this group of hydraulic tappet；
Occurs the number of times of the abnormal group of noise in multigroup noise of this group of hydraulic tappet that S8, judgement are obtained, if in this group of hydraulic pressure
It is minority to occur the abnormal group of noise at least one times in multigroup noise of tappet, then the performance evaluation of this group of hydraulic tappet is conjunction
Lattice；If conversely, it is majority, this group of hydraulic pressure to occur the abnormal group of noise at least one times in multigroup noise of this group of hydraulic tappet
The performance evaluation of tappet is unqualified.
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| JP4529694B2 (en) * | 2005-01-12 | 2010-08-25 | 株式会社明電舎 | Failure detection device for oil lifter of rotating machinery |
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| CN1995945A (en) * | 2006-12-26 | 2007-07-11 | 奇瑞汽车有限公司 | Engine hydraulic tappet detection table |
| CN203190943U (en) * | 2013-04-11 | 2013-09-11 | 深圳市富泰和精密制造有限公司 | Automatic detection device for air-valve hydraulic tappet |
| CN203203557U (en) * | 2013-04-11 | 2013-09-18 | 成都远恒精密测控技术有限公司 | Hydraulic tappet sedimentation test bench |
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