CN106679867B - The measuring device of frictional force between oil nozzle and needle-valve - Google Patents
The measuring device of frictional force between oil nozzle and needle-valve Download PDFInfo
- Publication number
- CN106679867B CN106679867B CN201611155341.1A CN201611155341A CN106679867B CN 106679867 B CN106679867 B CN 106679867B CN 201611155341 A CN201611155341 A CN 201611155341A CN 106679867 B CN106679867 B CN 106679867B
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- CN
- China
- Prior art keywords
- needle
- valve
- oil nozzle
- frictional force
- force snesor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0033—Force sensors associated with force applying means applying a pulling force
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to the measuring devices of frictional force between oil nozzle and needle-valve, it is characterised in that: including force snesor, bracket, vibration mechine and needle-valve fixture, the table top of the vibration mechine installs needle-valve fixture, and the needle-valve fixture is for clamping needle-valve；The needle-valve upper end is socketed oil nozzle, the oil nozzle upper end rigid connection force snesor, and the force snesor is mounted on frame bottom, height-adjustable, the reading zero for generating force snesor due to self weight of the bracket；The vibration mechine drives needle-valve to move up and down, and simulates the needle valve movement state in fuel injector real work, frictional force between the force sensor measuring needle-valve and oil nozzle.The configuration of the present invention is simple, using vibration mechine simulate needle valve movement state, to measure the frictional force of oil nozzle and needle-valve, for the later period fuel injector design and develop, simulate calculating, fuel characteristic study etc. more accurate boundary condition is provided.
Description
Technical field
The present invention relates to a kind of measuring devices, and the measuring device of frictional force, belongs to spray specifically between oil nozzle and needle-valve
Oily device designs and develops technical field.
Background technique
The fuel injection characteristic of common rail diesel engine all has a direct impact the economy, dynamic property and emission status of diesel engine, oil
Between mouth and needle-valve frictional force be study common-rail injector jet law important parameter and force analysis important parameter it
One.It carries out observational measurement analysis to the fuel injector needle lift of a valve, open time delay, closing delay, motion state etc., understands common rail spray
The motion conditions of oily device atomizer in actual operation have very important realistic meaning, and can be the fuel injector in later period
It designs and develops, the more accurate boundary conditions of offers such as calculating, fuel characteristic research is provided.
But since fuel injector structure is special (oil nozzle and needle-valve are assemblied in inside fuel injector), conventional friction measurement method
Frictional force between oil nozzle and needle-valve can not be measured, the frictional force for being intended to directly measure oil nozzle and needle-valve at oil nozzle end is quite tired
Difficulty can also be used to measure frictional force between oil nozzle and needle-valve so far currently without a ready-made device.
Summary of the invention
It is an object of the present invention to overcome the shortcomings of the prior art and provide frictional force between a kind of oil nozzle and needle-valve
Measuring device, structure is simple, simulates needle valve movement state using vibration mechine, to measure the frictional force of oil nozzle and needle-valve,
For the later period fuel injector design and develop, simulate calculating, fuel characteristic research etc. more accurate boundary condition is provided.
According to technical solution provided by the invention: the measuring device of frictional force between oil nozzle and needle-valve, it is characterised in that: including
The table top of force snesor, bracket, vibration mechine and needle-valve fixture, the vibration mechine installs needle-valve fixture, the needle-valve
Fixture is for clamping needle-valve；The needle-valve upper end is socketed oil nozzle, the oil nozzle upper end rigid connection force snesor, the power sensing
Device is mounted on frame bottom, height-adjustable, the reading zero for generating force snesor due to self weight of the bracket；The vibration
Dynamic test platform drives needle-valve to move up and down, and simulates the needle valve movement state in fuel injector real work, the force sensor measuring
Frictional force between needle-valve and oil nozzle.
As a further improvement of the present invention, the oil nozzle is overlapped with the axis of needle-valve and is exactly perpendicularly to vibration mechine
Table top.
As a further improvement of the present invention, the needle-valve fixture uses drilling attachment.
Compared with the prior art, the invention has the following advantages: the configuration of the present invention is simple, simulates needle using vibration mechine
Valve motion state to the fuel injector needle lift of a valve, open time delay, closes delay, movement shape to measure the frictional force of oil nozzle and needle-valve
State etc. carries out observational measurement analysis, understands the motion conditions of common-rail injector atomizer in actual operation, has extremely important
Realistic meaning, and can be designed and developed for the fuel injector in later period, simulate calculatings, fuel characteristic is studied etc. provide it is more accurate
Boundary condition.
Detailed description of the invention
Fig. 1 is the structure and applicable cases schematic diagram of the embodiment of the present invention.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1, the measuring device of frictional force is mainly by force snesor 1, bracket between oil nozzle and needle-valve in embodiment
2, vibration mechine 3 and needle-valve fixture 4 form, and the table top of the vibration mechine 3 installs needle-valve fixture 4, the needle-valve fixture 4
For clamping needle-valve 5；5 upper end of needle-valve is socketed oil nozzle 6,6 upper end of the oil nozzle rigid connection force snesor 1, and the power passes
Sensor 1 is mounted on 2 bottom of bracket, height-adjustable, the reading zero for generating force snesor 1 due to self weight of the bracket 2；
The vibration mechine 3 drives needle-valve 5 to move up and down, and simulates 5 motion state of needle-valve in fuel injector real work, and the power passes
Sensor 1 measures frictional force between needle-valve 5 and oil nozzle 6.
As shown in Figure 1, the oil nozzle 6 is overlapped with the axis of needle-valve 5 and is exactly perpendicularly to vibration mechine 3 in the present invention
Table top.It can be reduced in 5 motion process of needle-valve in this way because of measurement error caused by 5 axial position deviation of oil nozzle 6 and needle-valve.Institute
The verticality of needle-valve 5 can be ensured that using conventional drilling attachment, clamping needle-valve 5 by stating needle-valve fixture 4.
Specific installation application of the invention is as follows:
Needle-valve fixture 4 fixed first, needle-valve 5 is clamped, then oil nozzle 6 is placed on needle-valve 5；Power is sensed again
Device 1 is fixedly connected on 6 upper end of oil nozzle, and at this time since the self weight of force snesor 1 is pressed on oil nozzle 6, force snesor 1 has a reading
Number, last mounting bracket 2 make bracket 2 and force snesor 1 be rigidly connected, and the height of adjusting bracket 2 makes the reading of force snesor 1
Zero.
It is then turned on vibration mechine 3, the vibration frequency and amplitude of vibration mechine 3 are set, to simulate fuel injector work
When 5 motion state of needle-valve.
When vibration mechine 3 drives needle-valve fixture 4 and needle-valve 5 to move downward, 6 oil spout opening process of oil nozzle, needle are simulated
Valve 5 moves down, the frictional force downward by one of oil nozzle 6, and force snesor 1 is by 6 one downward pulling force of oil nozzle, power sensing
Reading on device 1 is frictional force when 6 oil spout of oil nozzle is opened.
When vibration mechine 3 drives needle-valve fixture 4 and needle-valve 5 to move upwards, 6 oil spout closing process of oil nozzle, needle are simulated
Valve 5 moves up, and the frictional force upward by one of oil nozzle 6, force snesor 1 is upwarded pressure by oil nozzle 6 one, show value
Frictional force when as 6 oil spout of oil nozzle is closed.
Claims (1)
1. the measuring device of frictional force between oil nozzle and needle-valve, it is characterised in that: including force snesor (1), bracket (2), vibration examination
Platform (3) and needle-valve fixture (4) are tested, the table top of the vibration mechine (3) installs needle-valve fixture (4), and the needle-valve fixture (4) is used
In clamping needle-valve (5)；Needle-valve (5) upper end is socketed oil nozzle (6), and oil nozzle (6) upper end is rigidly connected force snesor (1),
The force snesor (1) is mounted on bracket (2) bottom, the bracket (2) it is height-adjustable, make force snesor (1) due to from
The reading zero generated again；The vibration mechine (3) drives needle-valve (5) to move up and down, and simulates in fuel injector real work
Needle-valve (5) motion state, frictional force between force snesor (1) measurement needle-valve (5) and oil nozzle (6)；
The oil nozzle (6) is overlapped with the axis of needle-valve (5) and is exactly perpendicularly to the table top of vibration mechine (3)；
The needle-valve fixture (4) uses drilling attachment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155341.1A CN106679867B (en) | 2016-12-14 | 2016-12-14 | The measuring device of frictional force between oil nozzle and needle-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155341.1A CN106679867B (en) | 2016-12-14 | 2016-12-14 | The measuring device of frictional force between oil nozzle and needle-valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106679867A CN106679867A (en) | 2017-05-17 |
| CN106679867B true CN106679867B (en) | 2019-06-07 |
Family
ID=58868020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611155341.1A Active CN106679867B (en) | 2016-12-14 | 2016-12-14 | The measuring device of frictional force between oil nozzle and needle-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106679867B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419630A (en) * | 2000-03-24 | 2003-05-21 | 罗伯特-博希股份公司 | Method for determining the rail pressure of an injectioin valve having an piezoelectric actuator |
| JP2003166458A (en) * | 2001-11-30 | 2003-06-13 | Mitsubishi Heavy Ind Ltd | Fuel injection device for internal combustion engine |
| CN103575492A (en) * | 2013-11-14 | 2014-02-12 | 哈尔滨工程大学 | quantitative analysis experiment device of influence rule on tooth surface friction force by torsional vibration of shaft system |
| CN104595079A (en) * | 2014-12-03 | 2015-05-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common-rail oil sprayer assembly oil nozzle needle valve lift range measuring method and Hall sensor probe |
| CN204461717U (en) * | 2014-10-29 | 2015-07-08 | 重庆科技学院 | Diesel motor hydraulic leading apparatus performance test apparatus |
| CN204694467U (en) * | 2015-06-25 | 2015-10-07 | 鞍钢建设剥岩工程有限公司 | Unit injector Detecting data |
-
2016
- 2016-12-14 CN CN201611155341.1A patent/CN106679867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419630A (en) * | 2000-03-24 | 2003-05-21 | 罗伯特-博希股份公司 | Method for determining the rail pressure of an injectioin valve having an piezoelectric actuator |
| JP2003166458A (en) * | 2001-11-30 | 2003-06-13 | Mitsubishi Heavy Ind Ltd | Fuel injection device for internal combustion engine |
| CN103575492A (en) * | 2013-11-14 | 2014-02-12 | 哈尔滨工程大学 | quantitative analysis experiment device of influence rule on tooth surface friction force by torsional vibration of shaft system |
| CN204461717U (en) * | 2014-10-29 | 2015-07-08 | 重庆科技学院 | Diesel motor hydraulic leading apparatus performance test apparatus |
| CN104595079A (en) * | 2014-12-03 | 2015-05-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common-rail oil sprayer assembly oil nozzle needle valve lift range measuring method and Hall sensor probe |
| CN204694467U (en) * | 2015-06-25 | 2015-10-07 | 鞍钢建设剥岩工程有限公司 | Unit injector Detecting data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106679867A (en) | 2017-05-17 |
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