CN207261145U - A kind of electronic control system device for detecting sealability - Google Patents
A kind of electronic control system device for detecting sealability Download PDFInfo
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- CN207261145U CN207261145U CN201721121082.0U CN201721121082U CN207261145U CN 207261145 U CN207261145 U CN 207261145U CN 201721121082 U CN201721121082 U CN 201721121082U CN 207261145 U CN207261145 U CN 207261145U
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Abstract
The utility model belongs to Diesel Engine Technique Field, is related to a kind of electronic control system device for detecting sealability.A kind of electronic control system device for detecting sealability being related to has the shared-rail oil jetting pump separately positioned with common rail diesel engine；Corresponding shared-rail oil jetting pump is provided with the motor for driving it to act；The low-pressure delivery pump inlet of shared-rail oil jetting pump connects oil water separator by fuel pipe III；The import of oil water separator is by fuel pipe V with connecting oil drum；The low-pressure delivery pump discharge of shared-rail oil jetting pump is connected by fuel pipe I with the fuel inlet of fuel filter；The fuel outlet of the fuel filter is connected by fuel pipe II with the fuel inlet of shared-rail oil jetting pump；The high pressure fuel outlet of shared-rail oil jetting pump is connected by high-pressure oil pipe with electronic control system；The return flow oil hole of shared-rail oil jetting pump is connected by fuel pipe IV with oil drum.The utility model ensure that common rail diesel engine reliability at the trial；Improve work efficiency.
Description
Technical field
The utility model belongs to Diesel Engine Technique Field, is related to a kind of electronic control system device for detecting sealability.
Background technology
To meet increasingly harsh emission regulation demands, countries in the world diesel engine manufacturer all newly produces in active development
Product, reduce diesel emission, and Electrocontrolled high-pressure common rail fuel injection technic is taken the course of its own with its good application prospect.
Electrocontrolled high-pressure common rail fuel injection technic, is that high pressure fuel is transported in common rail pipe by shared-rail oil jetting pump, passes through
The opening time of charge oil pressure and electric-controlled fuel injector in accurate control common rail pipe, to reach the power according to diesel engine, rotating speed
Change, adjust injection pressure and distributive value respectively, the purpose of accurate optimization efficiency of combustion, can carry in the range of full working scope
The economy of high diesel engine, reduces discharge.
Electronic control system is mainly by shared-rail oil jetting pump, common rail pipe, electric-controlled fuel injector, high-pressure oil pipe and injection control
Five parts of unit form；Shared-rail oil jetting pump sucks fuel oil by flow measurement valve, is pressed into common rail pipe, so as to control common rail pipe
Interior pressure；According to diesel engine practical working situation, injection control unit can flexibly control electric-controlled fuel injector oil injection time, oil spout
Amount and injection rate.
Common rail overpressure is continuously maximum working pressure substantially, up to more than 160MPa, if electronic control system
There are micro-leakage, diesel engine high temperature, high vibration mal-condition under, it is inevitable to increase with the operation of diesel engine.Leakage
Fuel oil easily causes hazards due to its high temperature and with air contact status pole, and leakage rate, which crosses conference, causes diesel engine not start
And operation.Therefore electronic control system is extremely stringent to the sealing requirements of high pressure oil, does not allow that there are any abnormal
Leakage phenomenon, but conventional diesel engine assembly technology can not ensure electronic control system installation leakproofness.
At present, usually detection electronic control system leakproofness method is at the trial, to be carried by common rail diesel engine
High pressure fuel is transported in electronic control system by shared-rail oil jetting pump, judges electronic control system leakproofness quality.
In the process of implementing the utility model, the utility model people has found at least to have a disadvantage that using the above method：
Firstly, since the limitation of diesel engine bulk, assembly method, electronic control system installation is usually relatively tighter
Gather, if after common rail diesel engine completes assembling, just finding that electronic control system has exception and leaks after carrying out starting test, leakage
Parts near point may dismount extremely, significantly increase the difficulty for excluding electronic control system leak source.
Secondly, only common rail diesel engine is started, and drives shared-rail oil jetting pump to rotate, high pressure fuel is transported to common rail pipe
It is interior, make to set up dynamic rail pressure in common rail pipe, could judge that electronic control system is leaked with the presence or absence of abnormal.If there are automatically controlled
High pressure co-rail system leaks, it usually needs multiple repeated disassembled and assembled and starting.The diesel oil owner oil leab in these starting process
Pressure is not completely set up, and the Guan Chong such as main bearing shell and connecting rod bearing shell surfaces do not form normal work oil film.Repeatedly starting can cause to lead
Bearing shell and connecting rod bearing shell damage, or even cylinder jacket of diesel engine occur and pull phenomenon.
Finally, establish maximum pressure when common rail diesel engine starts, in common rail pipe and be typically only 600bar, can not detect each
Electronic control system leakproofness under a pressure, seriously affects common rail diesel engine reliability.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of electronic control system device for detecting sealability.
The utility model completes its utility model task using following technical proposals：
A kind of electronic control system device for detecting sealability, the detection device has to be separated with common rail diesel engine
The shared-rail oil jetting pump of setting；The shared-rail oil jetting pump is by being supported and fixed on stent；The corresponding shared-rail oil jetting pump is set
It is equipped with the motor for driving it to act；The motor is fixed on stent, and is coaxially disposed with the shared-rail oil jetting pump；
The output terminal of the motor is by frequency converter, shaft coupling with being connected the shared-rail oil jetting pump；The low pressure of the shared-rail oil jetting pump
Convey pump inlet and oil water separator is connected by fuel pipe III；The import of the oil water separator is by fuel pipe V with connecting oil
Bucket；The low-pressure delivery pump discharge of the shared-rail oil jetting pump is connected by fuel pipe I with the fuel inlet of fuel filter；The combustion
The fuel outlet of oil rectifier is connected by fuel pipe II with the fuel inlet of shared-rail oil jetting pump；The high pressure fuel of shared-rail oil jetting pump
Outlet is connected by high-pressure oil pipe with electronic control system；It is connected with to export injection pump on the high-pressure oil pipe
The chovr body that high pressure fuel is shunted；The return flow oil hole of the shared-rail oil jetting pump is connected by fuel pipe IV with oil drum.
A kind of electronic control system device for detecting sealability described in the utility model, divides using with common rail diesel engine
From the shared-rail oil jetting pump of setting, and corresponding shared-rail oil jetting pump sets independent driving motor, in electronic control system part
After completing assembling, electronic control system seal tightness test is flexibly carried out, it is high by adjusting the rotating speed of shared-rail oil jetting pump, control
Compression ignition oil enters electronic control system flow so as to control pressure, and at this moment pressure gauge can intuitively show Electrocontrolled high-pressure common rail
System pressure numerical value, therefore rail pressure can be adjusted initially close to maximum functional operating pressure, verification electronic control system
Feng Xing；Compared with existing detection electronic control system leakproofness method, method that the utility model is mentioned has following several
Point advantage：First, electronic control system can be detected and seals situation under each pressure, ensure that common rail diesel engine is being tested
When reliability；Second, if electronic control system, there are leak source, row can reduce parts dismounting number when leaking, improve work
Make efficiency；Third, during electronic control system carries out seal tightness test, inside has been filled with fuel oil, by automatically controlled height
Press common rail system inner air to empty, avoid common rail diesel engine and repeatedly start phenomenon, ensure that common rail diesel engine parts are steady
It is fixed reliable.
Brief description of the drawings
Fig. 1 is the installation diagram of the utility model.
Fig. 2 is the structural front view of the utility model.
Fig. 3 is the structure top view of the utility model.
In figure：1st, oil water separator, 2, stent, 3, bolt I, 4, high-pressure hose, 5, bolt II, 6, motor, 7, shaft coupling,
8th, frequency converter, 9, bolt III, 10, bolt IV, 11, fuel filter, 12, bolt V, 13, shared-rail oil jetting pump, 14, support, 15,
Fuel pipe I, 16, fuel pipe II, 17, fuel pipe III, 18, high-pressure oil pipe, 19, fuel pipe IV, 20, fuel pipe V, 21, bolt
VI, 22, oil drum, 23, transition body, 24, chovr body, 25, pressure gauge, 26, bolt VII.
Embodiment
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, simultaneously with reference to Fig. 2, Fig. 3, a kind of electronic control system device for detecting sealability, the detection
Device has the shared-rail oil jetting pump 13 separately positioned with common rail diesel engine；The shared-rail oil jetting pump 13 is fixed on by support 14
On stent 2；Described 14 one end of support is connected with shared-rail oil jetting pump by bolt VI 21, and one end passes through bolt V 12 with stent 2
Connection；It is described to support 14 to prevent co-rail oil injection pump vibration from quality problems occur；The corresponding shared-rail oil jetting pump 13 is set
There is the motor 6 for driving it to act；The motor 6 is fixed on stent 2, and is coaxially set with the shared-rail oil jetting pump 13
Put；The output terminal of the motor 6 is by frequency converter 8, shaft coupling 7 with being connected the shared-rail oil jetting pump 13；The frequency converter 8 is logical
Bolt III 9 is crossed to be fixed on stent 2；The frequency converter 8 controls motor speed by adjusting frequency；The motor 6 is according to change
Frequency device output frequency rotates, while drives shared-rail oil jetting pump to rotate by shaft coupling 7, and motor 6 is synchronous with shared-rail oil jetting pump 13 to be turned
It is dynamic；The low-pressure delivery pump inlet of the shared-rail oil jetting pump 13 connects oil water separator 1 by fuel pipe III 17；The water-oil separating
The import of device 1 is by fuel pipe V 20 with connecting oil drum 22；The oil water separator 1 is fixed on stent 2 by bolt I 3；Oil
Separator 1 was mainly the moisture that oil filter barrel intermediate fuel oil contains, and avoided electronic control system from containing water, so as to cause electricity
Break down during control high pressure co-rail system operation；The low-pressure delivery pump discharge of the shared-rail oil jetting pump 13 by fuel pipe I 15 with
The fuel inlet connection of fuel filter 11；The fuel outlet of the fuel filter 11 passes through fuel pipe II 16 and co-rail oil injection
The fuel inlet connection of pump 13；The fuel filter 11 is fixed on stent 2 by bolt IV 10；The height of shared-rail oil jetting pump 13
Compression ignition oil export is connected by high-pressure oil pipe 18 with electronic control system；Chovr body is connected with the high-pressure oil pipe 18
14, injection pump output high pressure fuel is shunted, a part of high pressure fuel enters pressure gauge 25, to show access into automatically controlled height
Common rail system intermediate fuel oil pressure is pressed, another part high pressure fuel enters electronic control system；The shared-rail oil jetting pump 13
Fuel oil after fuel filter 11 filters is transported in shared-rail oil jetting pump high pressure chest by low-pressure delivery pump, high pressure in high pressure chest
Fuel oil is transported in electronic control system by high-pressure oil pipe 18, so as to control pressure in electronic control system；Institute
The return flow oil hole for stating shared-rail oil jetting pump 13 is connected by fuel pipe IV 19 with oil drum.
A kind of operation principle of electronic control system device for detecting sealability described in the utility model：Frequency converter 8
Power on, press firing switch, motor 6 is rotated according to frequency converter output frequency, and motor 6 is driven altogether by shaft coupling 9
Rail oil jetting pump is run, and shared-rail oil jetting pump carries low-pressure delivery pump and starts to work, and fuel oil enters oil water separator by fuel pipe 20,
Enter low-voltage fuel delivery pump by fuel pipe 17, enter fuel filter by fuel pipe 15, enter altogether by fuel pipe 16
Rail oil jetting pump, a part of fuel oil return to fuel tank by fuel pipe 20, and another part high pressure fuel is entered by high-pressure oil pipe 18 to be turned
Junctor, pressure gauge 25 is connected with chovr body can show pressure this moment, while high pressure fuel enters automatically controlled height by high-pressure oil pipe
Press common rail system.After completing aforesaid operations, if there are leakage phenomenon, pressure gauge 25 not to show pressure for electronic control system,
Naked eyes can be visually seen leakage point at the same time, and due to common rail diesel engine, other parts are not assembled, can quickly be excluded leak
Point, above-mentioned work may be repeated, until electronic control system pressure is maintained at certain numerical value；At the same time can be by adjusting
Co-rail oil injection revolution speed, control high pressure fuel enter electronic control system flow so as to control pressure, at this moment pressure gauge 25
It can intuitively show electronic control system pressure value, therefore rail pressure can be adjusted and initially pressed to maximum functional work
Power, verifies electronic control system leakproofness.Compared with existing detection electronic control system leakproofness method, this reality
There is some following advantage with the new method mentioned：First, electronic control system can be detected and seals feelings under each pressure
Condition, ensure that common rail diesel engine reliability at the trial；Second, if electronic control system can subtract there are leak source when arranging leakage
Few parts dismounting number, improves work efficiency；Third, during electronic control system carries out seal tightness test, it is internal
Fuel oil is had been filled with, empties electronic control system inner air, common rail diesel engine is avoided and repeatedly starts phenomenon,
It ensure that common rail diesel engine parts are reliable and stable.
Claims (1)
1. a kind of electronic control system device for detecting sealability, the detection device, which has to separate with common rail diesel engine, to be set
The shared-rail oil jetting pump put；The shared-rail oil jetting pump is by being supported and fixed on stent；The corresponding shared-rail oil jetting pump is set
There is the motor for driving it to act；The motor is fixed on stent, and is coaxially disposed with the shared-rail oil jetting pump；Institute
The output terminal of motor is stated by frequency converter, shaft coupling with being connected the shared-rail oil jetting pump；The low pressure of the shared-rail oil jetting pump is defeated
Pump inlet is sent to connect oil water separator by fuel pipe III；The import of the oil water separator is by fuel pipe V with connecting oil
Bucket；The low-pressure delivery pump discharge of the shared-rail oil jetting pump is connected by fuel pipe I with the fuel inlet of fuel filter；The combustion
The fuel outlet of oil rectifier is connected by fuel pipe II with the fuel inlet of shared-rail oil jetting pump；The high pressure fuel of shared-rail oil jetting pump
Outlet is connected by high-pressure oil pipe with electronic control system；It is connected with to export injection pump on the high-pressure oil pipe
The chovr body that high pressure fuel is shunted；The return flow oil hole of the shared-rail oil jetting pump is connected by fuel pipe IV with oil drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721121082.0U CN207261145U (en) | 2017-09-04 | 2017-09-04 | A kind of electronic control system device for detecting sealability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721121082.0U CN207261145U (en) | 2017-09-04 | 2017-09-04 | A kind of electronic control system device for detecting sealability |
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| CN207261145U true CN207261145U (en) | 2018-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387285A (en) * | 2017-09-04 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
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2017
- 2017-09-04 CN CN201721121082.0U patent/CN207261145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387285A (en) * | 2017-09-04 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
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