CN106679867A - Device for measuring frictional force between oil nozzle and needle valve - Google Patents
Device for measuring frictional force between oil nozzle and needle valve Download PDFInfo
- Publication number
- CN106679867A CN106679867A CN201611155341.1A CN201611155341A CN106679867A CN 106679867 A CN106679867 A CN 106679867A CN 201611155341 A CN201611155341 A CN 201611155341A CN 106679867 A CN106679867 A CN 106679867A
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- CN
- China
- Prior art keywords
- needle
- valve
- oil nozzle
- needle valve
- frictional force
- Prior art date
- 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 invention relates to a device for measuring the frictional force between an oil nozzle and a needle valve, and the device is characterized in that the device comprises a force sensor, a support, a vibration test bench, and a needle valve clamping tool; the top surface of the vibration test bench is provided with the needle valve clamping tool; the needle valve clamping tool is used for clamping the needle valve; the upper end of the needle valve is in cup joint with the oil nozzle; the upper end of the oil nozzle is rigidly connected with the force sensor; the force sensor is disposed at the bottom of the support; the height of the support can be adjusted so as to enable the reading, caused by gravity, of the force sensor to be zero; the vibration test bench drives the needle valve to move up and down, so as to simulate the movement state of the needle valve of an oil injector in an actual work process; the force sensor measures the frictional force between the needle valve and the oil nozzle. The device is simple in structure, and employs the vibration test bench to simulate the movement state of the needle valve, so as to measure the frictional force between the needle valve and the oil nozzle, and provide more accurate boundary conditions for the subsequent design and development of the oil injector, simulation and calculation, and characteristic research of fuel oil.
Description
Technical field
The present invention relates between a kind of measurement apparatus, specifically oil nozzle and needle-valve frictional force measurement apparatus, belong to spray
Oily device designs and develops technical field.
Background technology
The fuel injection characteristic of common rail diesel engine all has a direct impact to the economy of diesel engine, dynamic property and emission status, oil
Between mouth and needle-valve frictional force be study common-rail injector jet law important parameter, be also force analysis important parameter it
One.It carries out observation measurementss analysis to the fuel injector needle lift of a valve, open time delay, closing delay, kinestate etc., understands common rail spray
Motion conditions of the oily device atomizer in real work, with very important realistic meaning, and can be the fuel injector in later stage
Design and develop, the more accurate boundary conditions of offer such as calculating, fuel characteristic research are provided.
But due to fuel injector structure it is special（Oil nozzle is assemblied in inside fuel injector with needle-valve）, the friction measurement method of routine
Frictional force between oil nozzle and needle-valve cannot be measured, be intended to be stranded oil nozzle end direct measurement oil nozzle is suitable with the frictional force of needle-valve
Difficulty, also currently without a ready-made device can be used to measure frictional force between oil nozzle and needle-valve so far.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided frictional force between a kind of oil nozzle and needle-valve
Measurement apparatus, its simple structure simulates needle valve movement state to measure the frictional force of oil nozzle and needle-valve using vibration mechine,
Fuel injector for the later stage is designed and developed, simulates the more accurate boundary conditions of offer such as calculating, fuel characteristic research.
According to the technical scheme that the present invention is provided：The measurement apparatus of frictional force between oil nozzle and needle-valve, it is characterised in that：Including
Force transducer, support, vibration mechine and needle-valve fixture, the table top of the vibration mechine installs needle-valve fixture, the needle-valve
Fixture is used to clamp needle-valve；The needle-valve upper end is socketed oil nozzle, and the oil nozzle upper end is rigidly connected force transducer, the power sensing
Device is arranged on frame bottom, Height Adjustable, the reading zero for making force transducer produce due to deadweight of the support；It is described to shake
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 on the present invention, the dead in line of the oil nozzle and needle-valve and it is exactly perpendicularly to vibration mechine
Table top.
As a further improvement on the present invention, the needle-valve fixture adopts drilling attachment.
The present invention compared with prior art, has the advantage that：Present configuration is simple, and using vibration mechine pin is simulated
Valve kinestate measuring the frictional force of oil nozzle and needle-valve, to the fuel injector needle lift of a valve, open time delay, close postpone, motion shape
State etc. carries out observation measurementss analysis, motion conditions of the common-rail injector atomizer in real work is understood, with extremely important
Realistic meaning, and can be the later stage fuel injector design and develop, simulate calculatings, fuel characteristic study etc. offer it is more accurate
Boundary condition.
Description of the drawings
Fig. 1 is the structure and applicable cases schematic diagram of the embodiment of the present invention.
Specific embodiment
With reference to concrete drawings and Examples, the invention will be further described.
As shown in figure 1, the measurement apparatus of frictional force are mainly by force transducer 1, support between the oil nozzle and needle-valve in embodiment
2nd, vibration mechine 3 and needle-valve fixture 4 are constituted, and the table top of the vibration mechine 3 installs needle-valve fixture 4, the needle-valve fixture 4
For clamping needle-valve 5；The upper end of the needle-valve 5 is socketed oil nozzle 6, and the upper end of the oil nozzle 6 is rigidly connected force transducer 1, and the power is passed
Sensor 1 is arranged on the bottom of support 2, Height Adjustable, the reading zero for making force transducer 1 produce due to deadweight of the support 2；
The vibration mechine 3 drives needle-valve 5 to move up and down, and simulates the kinestate of needle-valve 5 in fuel injector real work, and the power is passed
Sensor 1 measures frictional force between needle-valve 5 and oil nozzle 6.
As shown in figure 1, in the present invention, the dead in line of the oil nozzle 6 and needle-valve 5 is simultaneously exactly perpendicularly to vibration mechine 3
Table top.The measurement error caused because of oil nozzle 6 and the axial location deviation of needle-valve 5 in the motor process of needle-valve 5 can so be reduced.Institute
Stating needle-valve fixture 4 can adopt conventional drilling attachment, clamping needle-valve 5 to be ensured that the perpendicularity of needle-valve 5.
The concrete installation application of the present invention is as follows：
Needle-valve fixture 4 being fixed first, needle-valve 5 being clamped, then oil nozzle 6 is placed on needle-valve 5；Again by force transducer 1
The upper end of oil nozzle 6 is fixedly connected on, now because the deadweight of force transducer 1 is pressed on oil nozzle 6, force transducer 1 has a reading,
Last mounting bracket 2, makes support 2 be rigidly connected with force transducer 1, and the height of adjusting bracket 2, the reading for making force transducer 1 is returned
Zero.
Vibration mechine 3 is then turned on, the frequency of vibration and amplitude of vibration mechine 3 are set, to simulate fuel injector work
When the kinestate of needle-valve 5.
When vibration mechine 3 drives needle-valve fixture 4 and needle-valve 5 to move downward, the oil spout opening process of oil nozzle 6, pin are simulated
Valve 5 is moved down, and oil nozzle 6 is subject to a downward frictional force, force transducer 1 to be subject to 6 one downward pulling force of oil nozzle, power sensing
Reading on device 1 is the frictional force when oil spout of oil nozzle 6 is opened.
When vibration mechine 3 drives needle-valve fixture 4 and needle-valve 5 to move upwards, the oil spout closing process of oil nozzle 6, pin are simulated
Valve 5 is moved up, and oil nozzle 6 is subject to a frictional force upwards, force transducer 1 to be upwarded pressure by oil nozzle 6 one, show value
Frictional force when as the oil spout of oil nozzle 6 is closed.
Claims (3)
1. between oil nozzle and needle-valve frictional force measurement apparatus, it is characterised in that：Including force transducer（1）, support（2）, vibration examination
Test platform（3）With needle-valve fixture（4）, the vibration mechine（3）Table top install needle-valve fixture（4）, the needle-valve fixture（4）With
In clamping needle-valve（5）；The needle-valve（5）Upper end is socketed oil nozzle（6）, the oil nozzle（6）Upper end is rigidly connected force transducer（1）,
The force transducer（1）Installed in support（2）Bottom, the support（2）It is Height Adjustable, make force transducer（1）Due to certainly
The reading zero for producing again；The vibration mechine（3）Drive needle-valve（5）Move up and down, in simulation fuel injector real work
Needle-valve（5）Kinestate, the force transducer（1）Measurement needle-valve（5）With oil nozzle（6）Between frictional force.
2. between oil nozzle as claimed in claim 1 and needle-valve frictional force measurement apparatus, it is characterised in that：The oil nozzle（6）With
Needle-valve（5）Dead in line and be exactly perpendicularly to vibration mechine（3）Table top.
3. between oil nozzle as claimed in claim 1 and needle-valve frictional force measurement apparatus, it is characterised in that：The needle-valve fixture
（4）Using 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 true CN106679867A (en) | 2017-05-17 |
| CN106679867B 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 |
|---|---|
| CN106679867B (en) | 2019-06-07 |
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