CN201288628Y - Improved single time injection amount measurement instrument for engine fuel oil injector - Google Patents
Improved single time injection amount measurement instrument for engine fuel oil injector Download PDFInfo
- Publication number
- CN201288628Y CN201288628Y CNU2008201300412U CN200820130041U CN201288628Y CN 201288628 Y CN201288628 Y CN 201288628Y CN U2008201300412 U CNU2008201300412 U CN U2008201300412U CN 200820130041 U CN200820130041 U CN 200820130041U CN 201288628 Y CN201288628 Y CN 201288628Y
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- CN
- China
- Prior art keywords
- filter screen
- engine fuel
- filter
- fuel injector
- single injection
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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.)
- Expired - Lifetime
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Abstract
The utility model discloses an improved single time injection amount tester for an engine fuel injector, comprising a fuel injector (1), an anti-splash nozzle (2), a measuring cylinder (3), a piston (4), an electromagnetic valve (6), a displacement sensor (15) and an adjustment controller (16). The utility model is characterized in that the anti-splash nozzle (2) is equipped with a filter (10) for preventing impurity from entering the clearance between the measuring cylinder (3) and the piston (4), and from entering the electromagnetic valve (6) through an oblique fuel hole (5). The filter screen (11) of the filter (10) is a stainless steel filter screen or nylon filter screen, with a specification of 60 to 200 mesh. The improved instrument can avoid fault caused by impurity entering the key parts, obviously improve the working reliability of the instrument, extend the average non-fault working time, reduce the abrasion and lower the maintenance cost.
Description
Technical field
The utility model relates to a kind of improved engine fuel injector single injection event flowmeter EMI (Engine fuel injection quantity Measuring Indicator), particularly a kind of single injection event flowmeter that has installed filter additional.
Background technique
The detector that is used for accurately measuring internal-combustion engine oil injector single emitted dose has had many companies public offering on the market at home and abroad.For example, the EFS company of France, the Denso Corporation of the AKRIBIS company of Britain and Japan all has product to sell.Just product type, title are slightly different.The basic principle of this instrument and basic structure belong to known prior art, so some relevant patents, the CN1398323A (EP1343968) of for example German Bosch company and CN1416507A (EP1352175) patent are after application for a patent for invention is announced, for want of novelty, creativeness are successively by EUROPEAN PATENT OFFICE and China Intellectual Property Office's deemed withdrawal.
Before nineteen nineties, the single injection event instrument is mainly used in the development test of diesel engine fuel injection system and the selective examination test in the oil sprayer manufacturing process.The working life and the failure frequency of instrument are limited.Enter after this century, because the development, particularly high-pressure injection of diesel engine production technology and the development of high pressure co-rail system require the oil sprayer production unit to test the single injection amount of each oil sprayer.So requirement and frequency of utilization to the single injection event instrument increase considerably.In fact repeatedly install and remove in the process of oil sprayer, be difficult to avoid impurity such as some metal fillingss, dust and lamination coating to enter in the instrument.Because key components and parts in the single injection event instrument, the working clearance very little (being about 1.5～2 microns) of measuring piston and solenoid valve, impurity is easy to cause piston and solenoid valve stuck, can't work to cause instrument.Even burn the catastrophe failure of instrument power source module, strengthened maintenance cost.Make mean time between failures MTTF (mean time to failure) not reach 500 to 1000 hours the requirement that single injection event instrument manufacturer promises to undertake far away.This problem has become the single injection event instrument, existing product, common shortcoming and the serious problems that exist of prior art.
Summary of the invention
Technical problem to be solved in the utility model is to prevent that impurity from entering the measurement oil cylinder 3 of engine fuel injector single injection event flowmeter and the gap between the piston 4, and prevents that impurity from entering in the solenoid valve 6 by inclined oil hole of air 5.
The technological scheme that the utility model adopted is: a kind of improved engine fuel injector single injection event flowmeter is provided, and it is by oil sprayer 1, anti-splash nozzle 2, measure oil cylinder 3, piston 4, solenoid valve 6, displacement transducer 15, adjusting color controls 16 compositions such as grade are primarily characterized in that:
A. wherein installed filter 10 additional on the anti-splash nozzle 2;
B. the material of the filter screen 11 in the filter 10 adopts stainless steel filtering net or nylon leaching net, and its specification is 60～200 orders.
The beneficial effects of the utility model are, can avoid because of impurity enters the fault that single injection event instrument key components and parts is produced, and improve the functional reliability of instrument, prolong mean time between failures MTTF, reduce wear, and reduce maintenance cost.
Description of drawings
Below in conjunction with accompanying drawing and a kind of embodiment the utility model is further described.
Fig. 1 is a kind of embodiment's of the utility model a structure cross-sectional schematic.
Fig. 2 is the amplification view that has installed the anti-splash nozzle 2 of filter 10 additional.
Among the figure 1, oil sprayer, 2, anti-splash nozzle, 3, measure oil cylinder, 4, piston, 5, inclined oil hole of air, 6, solenoid valve, 7, pressing plate, 8, ABAP Adapter, 9, measuring chamber, 10, filter, 11, filter screen, 12, filter screen supporting, 13, filter screen set, 14, spring, 15, displacement transducer, 16, adjusting color controls.
Embodiment
Shown in Figure 1 is a kind of embodiment's of the utility model structural representation.Oil sprayer 1 is fixed on the oil injector single emitted dose detector by pressing plate 7 and ABAP Adapter 8 among the figure.Test oil is by the measuring chamber 9 of oil sprayer 1 through anti-splash nozzle 2 injection into pistion 4 tops.The effect of anti-splash nozzle 2 is mist of oil and foams of eliminating in the oil beam jetted.Test oil enters measuring chamber 9 backs and promotes piston 4 to bottom offset.Displacement transducer 15 carries out data processing for adjusting color controls 16 the piston displacement signal conveys that records, and exports and show the single injection amount of engine fuel injector then.After each measurement single injection amount, the test oil in the measuring chamber is discharged through solenoid valve 6 by inclined oil hole of air 5, and then measures next time.Because the basic principle and the basic structure of available engine oil injector single emitted dose detector belong to known prior art, so this specification is not done more detailed narration.
Shown in Figure 2 is the enlarged view that has installed the anti-splash nozzle 2 of filter 10 additional.Wherein installed filter 10 on the anti-splash nozzle 2 additional and can prevent that impurity from entering the gap of measuring between oil cylinder 3 and the piston 4, and prevented that impurity from entering in the solenoid valve 6 by inclined oil hole of air 5.Filter 10 among the figure is made up of filter screen 11, filter screen supporting 12, filter screen set 13, and wherein filter screen supports 12 and is used to be connected with filter screen set 13 and fixing filter screen 11.The shape of diagram filter screen 11 is cup-shaped, conical, also can make disc or other shapes.The Placement of anti-splash nozzle 2 and filter screen 11 adopts detachable mechanical connection manner, modes such as for example available conical surface compresses, screw threads for fastening, jump ring location.Do not adopt non-removable Placement (for example weld, riveted joint, bonding) so that clean, maintenance and changing.The material of filter screen 11 adopts the filter screen of Stainless Steel Wire braiding in the present embodiment, and its specification is 100 orders.
Claims (4)
1, a kind of improved engine fuel injector single injection event flowmeter, it is by oil sprayer (1), and anti-splash nozzle (2) is measured oil cylinder (3), piston (4), solenoid valve (6), displacement transducer (15), adjusting color controls compositions such as (16) is characterized in that:
A. wherein installed filter (10) additional on the anti-splash nozzle (2);
B. the material of the filter screen (11) in the filter (10) adopts stainless steel filtering net or nylon leaching net, and its specification is 60～200 orders.
2, improved engine fuel injector single injection event flowmeter according to claim 1 is characterized in that: filter wherein (10) is made up of filter screen (11), filter screen supporting (12), (13) three of filter screen sets.
3, improved engine fuel injector single injection event flowmeter according to claim 1 is characterized in that: the shape of filter screen (11) is cup-shaped, taper shape or disc in its middle filtrator (10).
4, improved engine fuel injector single injection event flowmeter according to claim 1 is characterized in that: wherein the Placement of anti-splash nozzle (2) and filter screen (11) adopts detachable mechanical connection manner, does not adopt non-removable Placement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201300412U CN201288628Y (en) | 2008-08-25 | 2008-08-25 | Improved single time injection amount measurement instrument for engine fuel oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201300412U CN201288628Y (en) | 2008-08-25 | 2008-08-25 | Improved single time injection amount measurement instrument for engine fuel oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288628Y true CN201288628Y (en) | 2009-08-12 |
Family
ID=40980309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201300412U Expired - Lifetime CN201288628Y (en) | 2008-08-25 | 2008-08-25 | Improved single time injection amount measurement instrument for engine fuel oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288628Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268186A (en) * | 2018-11-26 | 2019-01-25 | 北京理工大学 | A kind of fuel injector test device and test method |
| CN111201375A (en) * | 2017-09-13 | 2020-05-26 | 维特思科科技有限责任公司 | Apparatus and method for testing fuel injector nozzles |
-
2008
- 2008-08-25 CN CNU2008201300412U patent/CN201288628Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201375A (en) * | 2017-09-13 | 2020-05-26 | 维特思科科技有限责任公司 | Apparatus and method for testing fuel injector nozzles |
| US11454201B2 (en) | 2017-09-13 | 2022-09-27 | Vitesco Technologies GmbH | Apparatus and method for testing a fuel injector nozzle |
| CN109268186A (en) * | 2018-11-26 | 2019-01-25 | 北京理工大学 | A kind of fuel injector test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA FAW GROUP CORPORATION Free format text: FORMER OWNER: WUXI INST. OF OIL PUMP INJECTOR Effective date: 20120405 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214063 WUXI, JIANGSU PROVINCE TO: 130011 CHANGCHUN, JILIN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120405 Address after: 130011 Changchun Province, West New Economic and Technological Development Zone, Dongfeng Street, No. 2259, No. Patentee after: China FAW Group Corporation Address before: 214063 Jiangsu city of Wuxi province Qian Rong Lu No. 15 Patentee before: Wuxi Inst. of Oil Pump Injector |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
|
| CX01 | Expiry of patent term |