CN107387285A - A kind of electronic control system device for detecting sealability - Google Patents
A kind of electronic control system device for detecting sealability Download PDFInfo
- Publication number
- CN107387285A CN107387285A CN201710784082.7A CN201710784082A CN107387285A CN 107387285 A CN107387285 A CN 107387285A CN 201710784082 A CN201710784082 A CN 201710784082A CN 107387285 A CN107387285 A CN 107387285A
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- Prior art keywords
- oil
- fuel
- rail
- shared
- pressure
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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
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0265—Pumps feeding common rails
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0275—Arrangement of common rails
-
- 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
-
- 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
- F02M65/003—Measuring variation of fuel pressure in high pressure line
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention 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.This invention ensures that common rail diesel engine reliability at the trial；Improve operating efficiency.
Description
Technical field
The invention 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, it 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 be carried in the range of full working scope
The economy of high diesel engine, reduce 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, up to more than 160MPa substantially, if electronic control system
Micro-leakage be present, 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 strict to the sealing requirements of hydraulic oil, does not allow to exist any abnormal
Leakage phenomenon, but conventional diesel engine assembly technology can not ensure electronic control system installation sealing.
At present, generally detection electronic control system sealing 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 sealing quality.
During the present invention is realized, the inventors discovered that at least being had a disadvantage that using the above method：
Firstly, since the limitation of diesel engine bulk, assembly method, electronic control system installation is generally compact,
After if common rail diesel engine completes assembling, just find that electronic control system has exception and leaked after carrying out starting test, leak source
Neighbouring parts 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 into common rail pipe
It is interior, make to set up dynamic rail pressure in common rail pipe, could judge that electronic control system leaks with the presence or absence of abnormal.If exist 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 sealing under individual pressure, has a strong impact on common rail diesel engine reliability.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of electronic control system device for detecting sealability.
The present invention completes its invention task using following technical proposals：
A kind of electronic control system device for detecting sealability, described detection means have separately positioned with common rail diesel engine
Shared-rail oil jetting pump；Described shared-rail oil jetting pump is by being supported and fixed on support；It is described to support to prevent shared-rail oil jetting pump
There are quality problems in vibration；Corresponding described shared-rail oil jetting pump is provided with the motor for driving it to act；Described motor is consolidated
It is scheduled on support, and is coaxially disposed with described shared-rail oil jetting pump；The output end of the motor passes through frequency converter, shaft coupling and company
Connect described shared-rail oil jetting pump；The frequency converter is by adjusting frequency come controlled motor rotating speed；The motor is defeated according to frequency converter
Go out frequency rotation, while drive shared-rail oil jetting pump to rotate by shaft coupling, motor and shared-rail oil jetting pump synchronous axial system；The common rail
The low-pressure delivery pump inlet of injection pump connects oil water separator by fuel pipe III；The import of the oil water separator passes through fuel oil
Pipe V is with connecting oil drum；Oil water separator was mainly the moisture that oil filter barrel intermediate fuel oil contains, and avoided electronic control system
Containing water, so as to cause electronic control system to be broken down when running；The low-pressure delivery pump discharge of the shared-rail oil jetting pump
It is connected by fuel pipe I with the fuel inlet of fuel filter；The fuel outlet of the fuel filter by fuel pipe II with
The fuel inlet connection of shared-rail oil jetting pump；The high pressure fuel outlet of shared-rail oil jetting pump passes through high-pressure oil pipe and Electrocontrolled high-pressure common rail system
System connection；Chovr body is connected with the high-pressure oil pipe, injection pump output high pressure fuel is shunted, a part of high pressure fuel
Into pressure gauge, to show access into electronic control system intermediate fuel oil pressure, another part high pressure fuel enters automatically controlled height
Press common rail system；Fuel oil after fuel filter filters is transported to common rail spray by the low-pressure delivery pump of the shared-rail oil jetting pump
In oil pump high pressure chest, high pressure chest inner high voltage fuel oil is transported in electronic control system by high-pressure oil pipe, so as to control electricity
Control pressure in high pressure co-rail system；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 of the present invention, is set using being separated with common rail diesel engine
The shared-rail oil jetting pump put, and corresponding shared-rail oil jetting pump sets independent motor, is partially completed in electronic control system
After assembling, electronic control system seal tightness test is flexibly carried out, by adjusting the rotating speed of shared-rail oil jetting pump, controls high compression ignition
Oil enters electronic control system flow so as to control pressure, and at this moment pressure gauge can intuitively show electronic control system
Pressure value, therefore rail pressure can be adjusted and initially to maximum functional operating pressure, verifying electronic control system sealing；
Compared with existing detection electronic control system sealing method, the method that the present invention mentions has some following advantage：First,
Electronic control system can be detected and seal situation under each pressure, ensure that common rail diesel engine reliability at the trial；
Second, if electronic control system has leak source, row can reduce parts dismounting number, improve operating efficiency when leaking；Three
It is that inside has been filled with fuel oil, by Electrocontrolled high-pressure common rail system during electronic control system carries out seal tightness test
System inner air emptying, avoids common rail diesel engine and repeatedly starts phenomenon, ensure that common rail diesel engine parts are reliable and stable.
Brief description of the drawings
Fig. 1 is the installation diagram of the present invention.
Fig. 2 is the structural front view of the present invention.
Fig. 3 is the structure top view of the present invention.
In figure：1st, oil water separator, 2, support, 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
The embodiment of the present invention is further described below in conjunction with the accompanying drawings：
As shown in figure 1, simultaneously reference picture 2, Fig. 3, a kind of electronic control system device for detecting sealability, described detection means
With the shared-rail oil jetting pump 13 separately positioned with common rail diesel engine；Described shared-rail oil jetting pump 13 is fixed on support by support 14
On 2；Described one end of support 14 is connected with shared-rail oil jetting pump by bolt VI 21, and one end is connected with support 2 by bolt V 12；
It is described to support 14 to prevent co-rail oil injection pump vibration from quality problems occur；Corresponding described shared-rail oil jetting pump 13 be provided with to
The motor 6 for driving it to act；Described motor 6 is fixed on support 2, and is coaxially disposed with described shared-rail oil jetting pump 13；Institute
The output end of motor 6 is stated by frequency converter 8, shaft coupling 7 with being connected described shared-rail oil jetting pump 13；The frequency converter 8 passes through spiral shell
Bolt III 9 is fixed on support 2；The frequency converter 8 is by adjusting frequency come controlled motor rotating speed；The motor 6 is according to frequency converter
Output frequency rotates, while drives shared-rail oil jetting pump to rotate by shaft coupling 7, motor 6 and the synchronous axial system of shared-rail oil jetting pump 13；Institute
The low-pressure delivery pump inlet for stating shared-rail oil jetting pump 13 connects oil water separator 1 by fuel pipe III 17；The oil water separator 1
Import is by fuel pipe V 20 with connecting oil drum 22；The oil water separator 1 is fixed on support 2 by bolt I 3；Profit point
It was mainly the moisture that oil filter barrel intermediate fuel oil contains from device 1, and avoided electronic control system from containing water, so as to causes automatically controlled height
Broken down during pressure common rail system operation；The low-pressure delivery pump discharge of the shared-rail oil jetting pump 13 passes through fuel pipe I 15 and fuel oil
The fuel inlet connection of cleaner 11；The fuel outlet of the fuel filter 11 passes through fuel pipe II 16 and shared-rail oil jetting pump 13
Fuel inlet connection；The fuel filter 11 is fixed on support 2 by bolt IV 10；The high compression ignition of shared-rail oil jetting pump 13
Oil export is connected by high-pressure oil pipe 18 with electronic control system；Chovr body 14 is connected with the high-pressure oil pipe 18, will
Injection pump output high pressure fuel is shunted, and a part of high pressure fuel enters pressure gauge 25, is total to show access into Electrocontrolled high-pressure
Rail system intermediate fuel oil pressure, another part high pressure fuel enter electronic control system；The low pressure of 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 delivery pump, high pressure chest inner high voltage fuel oil
It is transported to by high-pressure oil pipe 18 in electronic control system, so as to control pressure in electronic control system；It is described common
The return flow oil hole of 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 of the present invention：Frequency converter 8 is connected
Power supply, firing switch is pressed, motor 6 is rotated according to frequency converter output frequency, and motor 6 drives common rail to spray by shaft coupling 9
Oil pump is run, and shared-rail oil jetting pump carries the start-up operation of low-pressure delivery pump, and fuel oil enters oil water separator by fuel pipe 20, passes through
Fuel pipe 17 enters low-voltage fuel delivery pump, enters fuel filter by fuel pipe 15, and entering common rail by fuel pipe 16 sprays
Oil pump, a part of fuel oil return to fuel tank by fuel pipe 20, and another part high pressure fuel enters chovr body by high-pressure oil pipe 18,
Pressure gauge 25 is connected with chovr body can show pressure this moment, while high pressure fuel enters Electrocontrolled high-pressure common rail by high-pressure oil pipe
System.After completing aforesaid operations, if electronic control system has leakage phenomenon, pressure gauge 25 does not show pressure, while meat
Eye can be visually seen leakage point, and due to common rail diesel engine, other parts are not assembled, can quickly exclude leak source, above-mentioned
Work may be repeated, until electronic control system pressure is maintained at certain numerical value；It can be sprayed simultaneously by adjusting common rail
Pump speed, control high pressure fuel enter electronic control system flow so as to control pressure, and at this moment pressure gauge 25 can be straight
See and show electronic control system pressure value, therefore rail pressure can be adjusted initially to maximum functional operating pressure, checking
Electronic control system sealing.Compared with existing detection electronic control system sealing method, the present invention mentions
Method have some following advantage：First, electronic control system can be detected and seals situation under each pressure, ensure that altogether
Rail diesel engine reliability at the trial；Second, if electronic control system has leak source, row can reduce parts when leaking and tear open
Number is filled, improves operating efficiency；Third, during electronic control system carries out seal tightness test, inside has been filled with
Fuel oil, by electronic control system inner air emptying, avoid common rail diesel engine and repeatedly start phenomenon, ensure that common rail
Parts and components of diesel engine is reliable and stable.
Claims (1)
1. a kind of electronic control system device for detecting sealability, described detection means, which has to separate with common rail diesel engine, to be set
The shared-rail oil jetting pump put；Described shared-rail oil jetting pump is by being supported and fixed on support；It is described to support to prevent co-rail oil injection
There are quality problems in pump vibration；Corresponding described shared-rail oil jetting pump is provided with the motor for driving it to act；Described motor
It is fixed on support, and is coaxially disposed with described shared-rail oil jetting pump；The output end of the motor by frequency converter, shaft coupling with
The described shared-rail oil jetting pump of connection；The frequency converter is by adjusting frequency come controlled motor rotating speed；The motor is according to frequency converter
Output frequency rotates, while drives shared-rail oil jetting pump to rotate by shaft coupling, motor and shared-rail oil jetting pump synchronous axial system；It is described common
The low-pressure delivery pump inlet of rail oil jetting pump connects oil water separator by fuel pipe III；The import of the oil water separator passes through combustion
Oil pipe V is with connecting oil drum；Oil water separator was mainly the moisture that oil filter barrel intermediate fuel oil contains, and avoided Electrocontrolled high-pressure common rail system
System contains water, so as to cause electronic control system to be broken down when running；The low-pressure delivery of the shared-rail oil jetting pump pumps out
Mouth is connected by fuel pipe I with the fuel inlet of fuel filter；The fuel outlet of the fuel filter passes through fuel pipe II
It is connected with the fuel inlet of shared-rail oil jetting pump；The high pressure fuel outlet of shared-rail oil jetting pump passes through high-pressure oil pipe and Electrocontrolled high-pressure common rail
System connects；Chovr body is connected with the high-pressure oil pipe, injection pump output high pressure fuel is shunted, a part of high compression ignition
Oil enters pressure gauge, and to show access into electronic control system intermediate fuel oil pressure, another part high pressure fuel enters automatically controlled
High pressure co-rail system；Fuel oil after fuel filter filters is transported to common rail by the low-pressure delivery pump of the shared-rail oil jetting pump
In injection pump high pressure chest, high pressure chest inner high voltage fuel oil is transported in electronic control system by high-pressure oil pipe, so as to control
Pressure in electronic control system；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 |
|---|---|---|---|
| CN201710784082.7A CN107387285A (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 |
|---|---|---|---|
| CN201710784082.7A CN107387285A (en) | 2017-09-04 | 2017-09-04 | A kind of electronic control system device for detecting sealability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107387285A true CN107387285A (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710784082.7A Pending CN107387285A (en) | 2017-09-04 | 2017-09-04 | A kind of electronic control system device for detecting sealability |
Country Status (1)
| Country | Link |
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| CN (1) | CN107387285A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529311A (en) * | 2019-10-09 | 2019-12-03 | 河南柴油机重工有限责任公司 | A kind of split type fuel oil supply system of single cylinder common rail diesel engine |
| CN111520268A (en) * | 2020-04-29 | 2020-08-11 | 河南柴油机重工有限责任公司 | Pre-pressurizing device, pressure building method and cleaning method of high-pressure common rail diesel engine |
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201412250Y (en) * | 2009-02-25 | 2010-02-24 | 无锡油泵油嘴研究所 | Oil supply pump performance test-bed of high-pressure common rail system of diesel engine |
| CN206234033U (en) * | 2016-12-09 | 2017-06-09 | 上海扬发动力有限公司 | A kind of Design of High Pressure Common Rail Diesel Engine |
| CN207261145U (en) * | 2017-09-04 | 2018-04-20 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
-
2017
- 2017-09-04 CN CN201710784082.7A patent/CN107387285A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201412250Y (en) * | 2009-02-25 | 2010-02-24 | 无锡油泵油嘴研究所 | Oil supply pump performance test-bed of high-pressure common rail system of diesel engine |
| CN206234033U (en) * | 2016-12-09 | 2017-06-09 | 上海扬发动力有限公司 | A kind of Design of High Pressure Common Rail Diesel Engine |
| CN207261145U (en) * | 2017-09-04 | 2018-04-20 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529311A (en) * | 2019-10-09 | 2019-12-03 | 河南柴油机重工有限责任公司 | A kind of split type fuel oil supply system of single cylinder common rail diesel engine |
| CN111520268A (en) * | 2020-04-29 | 2020-08-11 | 河南柴油机重工有限责任公司 | Pre-pressurizing device, pressure building method and cleaning method of high-pressure common rail diesel engine |
| CN112709655A (en) * | 2021-01-29 | 2021-04-27 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
| CN112709655B (en) * | 2021-01-29 | 2023-09-22 | 枝江市宁港物流有限公司 | Tightness detection device for electric control high-pressure common rail system |
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Application publication date: 20171124 |
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