CN109372672A - Flow performance detection method - Google Patents
Flow performance detection method Download PDFInfo
- Publication number
- CN109372672A CN109372672A CN201811046146.4A CN201811046146A CN109372672A CN 109372672 A CN109372672 A CN 109372672A CN 201811046146 A CN201811046146 A CN 201811046146A CN 109372672 A CN109372672 A CN 109372672A
- Authority
- CN
- China
- Prior art keywords
- pressure
- flow performance
- detection method
- performance detection
- oil
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
Abstract
The present invention provides a kind of flow performance detection method of flow performance that can more accurately detect part.In flow performance detection method of the invention, inlet pressure is 14~17MPa, and oil outlet has pressure, is 4~7MPa, and the difference of the pressure of the oil inlet and the pressure of the oil outlet is 10MPa.
Description
Technical field
The present invention relates to it is a kind of such as in fuel injection system oil nozzle couple, control valve, part orifice plate flow
The flow performance detection method that performance is detected.
Background technique
The detection method of flow performance as above-mentioned part, flow detection standard recognized within the industry are that detection workpiece exists
Inlet pressure is the flow under 10MPa, but the inventors found that: for example, for the part in common-rail injector
Detection, the good product of the consistency detected using this detection mode, the qualification rate after being attached on fuel injector is not high, also
It is to say, the result of above-mentioned detection mode has inaccuracy.
Summary of the invention
In view of this, the purpose of the present invention is to provide the streams that one kind can more accurately detect the flow performance of part
Measure method for testing performance.
In order to achieve the above objectives, in flow performance detection method of the invention, inlet pressure is 14~17MPa, out
Hydraulic fluid port has pressure, is 4~7MPa, and the difference of the pressure of the oil inlet and the pressure of the oil outlet is 10MPa.
Using such present invention, when detecting, not only oil inlet has pressure, and oil outlet also has pressure, and full
Foot " inlet pressure is 14~17MPa, oil outlet pressure is 4~7MPa, and oil inlet and outlet pressure difference is 10MPa ", thus, as after
What the embodiment stated was confirmed, more accurate measurement result can be obtained.
The present invention is preferred, and the pressure of the oil inlet is 16MPa, and the pressure of the oil outlet is 6MPa.
Method of the invention is particularly suitable for the flow performance of oil nozzle couple in fuel injection system, control valve or orifice plate
Detection.
Detailed description of the invention
Fig. 1 is the explanatory diagram for indicating the orifice plate in the fuel injection system as the experimental subjects in embodiment；
Fig. 2 is the explanation for indicating the control valve seat in the fuel injection system as the experimental subjects in embodiment
Figure；
Fig. 3 is the explanation for indicating the oil nozzle couple in the fuel injection system as the experimental subjects in embodiment
Figure.
Specific embodiment
In the flow performance detection method of this implementation, inlet pressure is 14~17MPa, and oil outlet has pressure, be 4~
7MPa, and the difference of the pressure of the oil inlet and the pressure of the oil outlet is 10MPa.
Using such present embodiment, when detecting, not only oil inlet has pressure, and oil outlet also has pressure, and
And meet " inlet pressure is 14~17MPa, oil outlet pressure is 4~7MPa, and oil inlet and outlet pressure difference is 10MPa ", thus,
What embodiment as be described hereinafter was confirmed, more accurate measurement result can be obtained.
With " for the pressure of oil inlet to be preferred for 16MPa, the pressure of oil outlet is preferably 6MPa ".
It, can by carrying out the experiment of flow performance detection to oil nozzle couple, control valve or the orifice plate in fuel injection system
Know, the method for present embodiment is particularly suitable for the flow performance detection of these workpiece.
[embodiment]
Table 1
Note: 1353,1299,2495,2,366 4 orifice plates, big operating condition oil mass range are 170.9 to 171.0mm3, small operating condition stream
Amount arrives 13.4mm for 12.73, it is considered as 170 and 13.
What upper table 1 indicated is the result for the comparative experiments that the present inventor is done.
In this experiment, 6 parts are used, have been carried out example 1, comparative example 1, comparative example 2 respectively for this 6 parts
And the experiment after assembly.
For example, 4 parts of number 1353,1299,2495,2366, performance approaches according to the experiment after assembly.So
And 2 parts of number 1347,2533 differ larger with the performance of aforementioned 4 parts.It is below 1347,2533 to number
2 parts analyzed.
<part for being 1347 for number>
It is measured using the method for embodiment 1, as analysis, for example, the flow-rate ratio measured is 1.024, with aforementioned 4 parts
Result (1.006,1.006,0.997,1.009) difference it is more apparent (difference is 0.018,0.018,0.027,0.015 respectively,
And be all positive value, change also little), this is consistent with the experimental result after assembly, thus, it can be sentenced using the method for embodiment 1
Break for number 1347 part and aforementioned 4 parts difference, be capable of detecting when underproof situation；
And the method for using comparative example 1, as analysis, for example, the flow-rate ratio measured is 1.170, zero with number 1299
The difference very little (0.006) of the result (1.164) of part, it is inconsistent with the experimental result after assembly, thus, using comparative example 1
Method, it is difficult to judge number be 1347 part whether with aforementioned 4 part differences, it is difficult to detect underproof situation；
In addition, using the method for comparative example 2, as analysis, for example, the flow-rate ratio measured is 1.472, the part with 1353
Result (1.483) difference it is smaller (- 0.011, and be negative value), it is inconsistent with the experimental result after assembly, thus, using comparing
The method of example 2, it is difficult to detect underproof situation.
In addition, the testing result difference (variation) between aforementioned 4 parts is also larger, more using the method in comparative example 1
It is difficult to judge rejected part, thus the method is not especially preferred
<part for being 2533 for number>
Using the method for embodiment 1, as analysis, for example, the flow-rate ratio measured is 1.022, the knot with aforementioned 4 parts
Fruit (1.006,1.006,0.997,1.009) difference is more apparent (to be 0.016,0.016,0.025,0.013 respectively, and is all positive
Value), thus, the method for using embodiment 1 may determine that part and aforementioned 4 part differences for 2533, can judge not
Qualified situation；
And the method for using comparative example 1, as analysis, for example, the flow-rate ratio measured is 1.186, zero with number 2495
Part difference very little (0.002), it is inconsistent with the experimental result after assembly, thus, using the method for comparative example 1, it is difficult to which detection is not
Qualified situation；
Using the method for comparative example 2, as analysis, for example, the flow-rate ratio measured is 1.469, the knot with aforementioned 4 parts
Although fruit has some differences, but its value is between 1353 result and the result of other 3 parts, thus, also more difficult
The case where to judge 2533 part, it is difficult to detect underproof part.
From the foregoing, it will be observed that using the method for present embodiment, especially relative to oil outlet no pressure in the prior art
Detection method can accurately detect underproof situation, the qualification rate after improving component assembly.
Table 2
Table 3
The other embodiments done for part same as described above and other comparative examples are respectively indicated in table 2 and table 3
Experiment.By the result of table 2 and table 3 it is found that substantially use inlet pressure for 14~17MPa, oil outlet have pressure and be 4~
7MPa method of the invention, it is possible to relatively accurately being detected.
The orifice plate in the fuel injection system as the object of above-described embodiment method experiment is shown in FIG. 1 to FIG. 3, is controlled
Valve seat processed, oil nozzle couple.However, the present invention is not limited thereto, it is readily applicable to the flow detection of other parts.
Claims (3)
1. a kind of flow performance detection method, which is characterized in that
Inlet pressure is 14~17MPa, and oil outlet has pressure, is 4~7MPa, and the pressure of the oil inlet and it is described go out
The difference of the pressure of hydraulic fluid port is 10MPa.
2. flow performance detection method according to claim 1, which is characterized in that the pressure of the oil inlet is 16MPa,
The pressure of the oil outlet is 6MPa.
3. flow performance detection method according to claim 1 or 2, which is characterized in that for the oil in fuel injection system
The flow performance detection method of mouth couple, control valve or orifice plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046146.4A CN109372672A (en) | 2018-09-07 | 2018-09-07 | Flow performance detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811046146.4A CN109372672A (en) | 2018-09-07 | 2018-09-07 | Flow performance detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372672A true CN109372672A (en) | 2019-02-22 |
Family
ID=65404642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811046146.4A Pending CN109372672A (en) | 2018-09-07 | 2018-09-07 | Flow performance detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372672A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006125235A (en) * | 2004-10-27 | 2006-05-18 | Denso Corp | Device and method for measuring flow rate |
| US20070157907A1 (en) * | 2005-04-05 | 2007-07-12 | Denso Corporation | Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus |
| CN101922394A (en) * | 2010-09-02 | 2010-12-22 | 北京博润宏达科技发展有限公司 | High-pressure common rail detection system |
| CN103016231A (en) * | 2013-01-08 | 2013-04-03 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Flow measuring method of restriction orifice in high-pressure common rail oil injector |
| CN103061937A (en) * | 2011-10-24 | 2013-04-24 | 联合汽车电子有限公司 | Oil injector screen cloth structure for gasoline direct injection engine |
| CN103195632A (en) * | 2013-04-01 | 2013-07-10 | 中国北方发动机研究所(天津) | Oil injection nozzle matching part flow grouping testing device and testing method |
| CN103375321A (en) * | 2012-04-13 | 2013-10-30 | 杨刚 | Flow measurement device for control unit of high-pressure common rail injector |
| CN104405553A (en) * | 2014-11-19 | 2015-03-11 | 江苏大学 | Measuring device for oil injection rule of each hole of oil injection nozzle of diesel engine |
-
2018
- 2018-09-07 CN CN201811046146.4A patent/CN109372672A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006125235A (en) * | 2004-10-27 | 2006-05-18 | Denso Corp | Device and method for measuring flow rate |
| US20070157907A1 (en) * | 2005-04-05 | 2007-07-12 | Denso Corporation | Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus |
| CN101922394A (en) * | 2010-09-02 | 2010-12-22 | 北京博润宏达科技发展有限公司 | High-pressure common rail detection system |
| CN103061937A (en) * | 2011-10-24 | 2013-04-24 | 联合汽车电子有限公司 | Oil injector screen cloth structure for gasoline direct injection engine |
| CN103375321A (en) * | 2012-04-13 | 2013-10-30 | 杨刚 | Flow measurement device for control unit of high-pressure common rail injector |
| CN103016231A (en) * | 2013-01-08 | 2013-04-03 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Flow measuring method of restriction orifice in high-pressure common rail oil injector |
| CN103195632A (en) * | 2013-04-01 | 2013-07-10 | 中国北方发动机研究所(天津) | Oil injection nozzle matching part flow grouping testing device and testing method |
| CN104405553A (en) * | 2014-11-19 | 2015-03-11 | 江苏大学 | Measuring device for oil injection rule of each hole of oil injection nozzle of diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7685866B2 (en) | Leakage checking and calibrating of a liquid delivery system | |
| CN101191754A (en) | Checking apparatus for checking product sealing performance and checking method | |
| CN104359661A (en) | Universal valve performance test device | |
| CN104977394B (en) | A kind of Gas Components and calorific value on-line measurement device | |
| CN103091152A (en) | Intelligent dilution system and intelligent dilution method for on-line analyzer | |
| CN104914198A (en) | Automatic gas sample injection apparatus and use method thereof | |
| TWI494554B (en) | Method and device for differential pressure measurement | |
| CN109372672A (en) | Flow performance detection method | |
| CN106907281B (en) | A kind of Oil-gas Separation and detection device of common-rail injector oil return | |
| CN103123301A (en) | Multifunctional valve dynamic detection device | |
| CN202501910U (en) | Calibrating device for heavy caliber gas flow | |
| CN101234371B (en) | Oil or grease coating machine | |
| CN109642812B (en) | Flow meter | |
| CN209858186U (en) | Performance detection device of engine fuel nozzle | |
| CN109026804B (en) | Molecular pump pumping speed test system and method based on CF400 interface | |
| CN113551902B (en) | Decompression valve detection method and system and engine | |
| CN204882050U (en) | Valve capability test system is mediated to fuel filter pressure | |
| CN104390831A (en) | Method and device for preparing standard methacrylic acid gas sample | |
| CN2906577Y (en) | Micro gas/liquid element leakage detector | |
| CN103542915A (en) | Gas small flow standard device | |
| CN203848992U (en) | Automatic checking device for sealing performance of air valve | |
| CN208805264U (en) | Electronics soap-film flow automatic calibrator | |
| CN208568202U (en) | A kind of reverse-osmosis membrane element air-tightness detection device | |
| CN111622878B (en) | Device and method for detecting leakage of matching part structure | |
| CN207336479U (en) | Mobile gas tester calibrating apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |
|
| RJ01 | Rejection of invention patent application after publication |