CN101135608B - Single oilchannel fuel oil engines heat test oil return feeding system and method - Google Patents
Single oilchannel fuel oil engines heat test oil return feeding system and method Download PDFInfo
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- CN101135608B CN101135608B CN200710092801A CN200710092801A CN101135608B CN 101135608 B CN101135608 B CN 101135608B CN 200710092801 A CN200710092801 A CN 200710092801A CN 200710092801 A CN200710092801 A CN 200710092801A CN 101135608 B CN101135608 B CN 101135608B
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- 239000003921 oil Substances 0.000 title claims abstract description 141
- 239000000295 fuel oil Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 19
- 239000000446 fuel Substances 0.000 claims description 37
- 239000012530 fluid Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000010705 motor oil Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Lubrication Of Internal Combustion Engines (AREA)
Abstract
In the invention, its compressed air pipe system and its oil feeding in pipe system are connected to the air supply/oil supply end of the engine fuel oil pipe assembly via a shared air supply/oil supply pipe; a jet flow three-way is set on the air supply/oil supply pipe; the air supply/oil supply port and the vacuum intake of the air supply/oil supply pipe are respectively connected to the compressed air pipe system and the oil supply end of the fuel oil pipe; the feedback oil port is connected to the feedback pipe system. In the invention, the pressure from the compressed air is used to press the fuel oil back to the feedback oil pipe system; the vacuum formed in the cavity of the jet flow three-way is used to suck out the residual oil in the fuel oil pipe assembly and feed back the oil to the oil chamber.
Description
Technical field
The invention relates to and make a kind of method and the device that the excess oil of fuel engines after break-in (heat test) handled.Particularly, the present invention is used for single oil circuit fuel engines after finishing heat test remaining gasoline to be taked two a kind of method and devices that push back oil.
Background technology
Most of engine fuel pipe assemblies position is provided with the fuel oil input and output port, after engine is finished break-in, residual gasoline in engine and the input channel need be got rid of, usual way is directly to apply pressurized air by input end in the engine fuel pipe assembly, makes excess oil return total oil return line (promptly blowing oil) from output terminal.
The shortcoming of the method is not to be suitable for the fuel engines that only is provided with an input port, it is single oil circuit engine, as Europe III engine, this class engine is after heat test, in-engine Residual oil cannot return main oil return line, and behind the fuel oil hydraulic quick coupler that pulls out its input hydraulic fluid port, Residual oil can be imported oil port and the outflow of fuel oil hydraulic quick coupler from engine, high-concentration gasoline spreads on the running-in test stand, has constituted serious potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is at having the shortcoming that return oil system and method can not realize the oil return of single oil circuit fuel engines now, and design a kind of single oilchannel fuel oil engines heat test oil return feeding system and method, confession, the shared system of oil return, and the unique two intersection oil return methods of pressing of employing, simple in structure, easy to use, excess oil can all be back to total return line, eliminates safe hidden trouble.
Technical scheme of the present invention is as follows:
The present invention at first proposes a kind of single oilchannel fuel oil engines heat test oil return feeding system, and this system includes compressed air line system, oil feed line system and return line system.Wherein compressed air line system, oil feed line system are connected with the air feed of engine fuel pipe assembly/oil end by shared air feed/oil pipe, one jet threeway is set on this air feed/oil pipe, air feed/the hydraulic fluid port of jet threeway is connected with the compressed air line system, the vacuum port of jet threeway is connected with engine fuel pipe assembly fuel feeding end, and the oil return opening of jet threeway is connected with the return line system.
Wherein, the axis of the vacuum port of jet threeway and confession/oil gas mouth is and is in tilted layout, air supply opening and exhausr port are at same axis, its inner chamber is respectively negative pressure of vacuum chamber, air feed/oil pocket and oil back chamber, air feed/oily inner chamber inlet end has the through hole of a diameter of phi 2, the through hole end is 60 ° of chamferings, is horn-like from inside to outside.
Described return line system comprises oil return valve, ball valve and the oil sump on the scavenge pipe that is connected to jet threeway oil return opening in turn, and oil return valve adopts air operated reversing valve.Described compressed air line system by pressurized air, blow fuel tap, retaining valve and ball valve and connect and compose by pipeline successively, the oil feed line system is connected and composed by pipeline successively by delivery valve, retaining valve and ball valve, and two systems are connected to the air feed/hydraulic fluid port of jet threeway by shared ball valve; Blow fuel tap, delivery valve and all adopt air operated reversing valve.
The present invention carries out the single oilchannel fuel oil engines heat test oil return feeding method that a step proposes, and this method adopts and twoly pushes back oily mode, utilizes pressurized air to be power source, and its pressure (malleation) pushes back the return line system with the fuel oil in oil pipe.After simultaneously pressurized air reaches certain force value, hydraucone place at jet threeway air feed end inner chamber produces jet, because gas toughness, jet siphons away the gas in the negative pressure of vacuum chamber, in the chamber, form vacuum (being negative pressure), negative pressure then with the Residual oil sucking-off in this engine and the fuel rail assembly to the oil back chamber chamber.This method specifically may further comprise the steps:
(1) fuel feeding: the delivery valve of fuel oil by the oil feed line system is through tapping into the air feed/hydraulic fluid port of jet threeway with compressed air line system shared air feed/oil pipe, this moment, the oil return valve of jet threeway cut out, fuel oil enters the shared hydraulic fluid port of turnover of engine fuel pipe assembly by the vacuum port of jet threeway, gives engine oil;
(2) oil return: after heat test is finished, close the oil feed line system, open the return line system, then the compressed air line system is carried out the control at intermittence of one open-one close; At first open the compressed air line system, pressurized air is by blowing fuel tap through entering the air feed/hydraulic fluid port of jet threeway with oil feed line system shared air feed/oil pipe, fuel oil oil return opening by the jet threeway under the effect of malleation in the oil pipe pushes back the return line system, this moment, jet siphoned away the gas in the jet threeway negative pressure of vacuum chamber, produced negative pressure; The closes compression air pipe system with the Residual oil sucking-off in the engine fuel pipe assembly, is back to return line system through oil return opening by the negative pressure in the jet threeway then; By on-off repeatedly, form repeatedly pressures-suctions (being generally 5～8 times), produce the positive and negative pressure of intersection repeatedly, the oil return of the single oil circuit fuel engines of realization under two pressure effects, the oily full scale clearance in the engine fuel pipe assembly is clean.
Native system and method compared with prior art have following beneficial effect:
1, the Residual oil in the oil-in place of single oil circuit fuel engines energy sucking-off engine and the fuel oil assembly can all return main scavenge pipe with the residual fuel oil in the oil supply system, has effectively eliminated site safety hidden danger, has saved gasoline.
2, for an oil return shared system, system element is few, and the jet three-port structure is simple, manufacturing and operating cost are low, easy to operate.
Description of drawings
The structural drawing of Fig. 1 single oilchannel fuel oil engines heat test oil return feeding system
Fig. 2 jet three-port structure figure
Embodiment
The single oilchannel fuel oil engines heat test oil return feeding method realizes by single oilchannel fuel oil engines heat test oil return feeding system.Referring to Fig. 1, oil return feeding system includes compressed air line system, oil feed line system and return line system.The compressed air line system by compressed air gas source 1, blow fuel tap 2, retaining valve 3 and ball valve 6 and connect and compose by pipeline successively; The oil feed line system is connected and composed by pipeline successively by delivery valve 4, retaining valve 5 and ball valve 6; Two systems are connected with the air feed/oil end of engine fuel pipe assembly 10 with air feed/oil pipe by shared ball valve 6, this air feed/oil pipe is provided with a jet threeway 7, air feed/the hydraulic fluid port 71 of jet threeway 7 is connected with the compressed air line system by hydraulic quick coupler and flexible pipe, the vacuum port 72 of jet threeway is connected with fuel rail assembly fuel feeding end by hydraulic quick coupler and flexible pipe, and the oil return opening 73 of jet threeway is connected with the return line system by hydraulic quick coupler and flexible pipe.The return line system comprises oil return valve 8, the ball valve 9 on the scavenge pipe that is connected to jet threeway oil return opening 73 in turn, at last to the fuel oil pond.Above-mentioned blow fuel tap 2, delivery valve 4 and oil return valve 8 all adopt air operated reversing valve, respectively by 11 controls of three electromagnetic pneumatic reversal valves.
Structure such as Fig. 2 of jet threeway 7 show that there are three mouths that are threaded the outside of jet threeway, and are respectively air feed/hydraulic fluid port 71, vacuum port 72 and oil return opening 73; Corresponding three inner chambers that communicate are also arranged in the inside of jet threeway, be respectively negative pressure of vacuum chamber 712, air feed/oil pocket 711 and oil back chamber 713, the inlet end of air feed/oil pocket 711 has the through hole of a diameter of phi 2, and the through hole end is 60 ° of chamferings, is horn-like from inside to outside.The internal diameter in negative pressure of vacuum chamber 712 is Φ 6, and the internal diameter of oil back chamber 713 is Φ 5.
Adopt the as follows of said system realization for oil return method:
1, fuel feeding: close return oil system pipeline and compressed air line system, open the oil feed line system, delivery valve that fuel oil passes through is through tapping into the air feed/hydraulic fluid port of jet threeway with compressed air line system shared air feed/oil pipe, fuel oil is delivered to the oil inlet and outlet of engine fuel pipe assembly by the vacuum port of jet threeway, gives engine oil.
2, oil return: after heat test is finished, close the oil feed line system, open the return line system, then the compressed air line system is carried out the control at intermittence of one open-one close.
At first be to blow oil (pressing oil) process, open the compressed air line system, pressurized air is by blowing fuel tap through entering the air feed/hydraulic fluid port of jet threeway with oil feed line system shared air feed/oil pipe, fuel oil in oil pipe oil return opening by the jet threeway under the effect of malleation is pushed back the return line system that flows to, this moment, jet siphoned away the gas in the jet threeway negative pressure of vacuum chamber, produced negative pressure;
Be oil-absorbing process then, the closes compression air pipe system, the negative pressure by jet threeway negative pressure of vacuum chamber is got back to the return line system with the Residual oil sucking-off in the engine fuel pipe assembly by oil return opening;
By on-off repeatedly, form repeatedly pressure-suction, the oily full scale clearance in the engine fuel pipe assembly is clean.
Two operating procedure, activity time and gap number of times (frequency of operation) that push back oily process are by the PLC programmed control, and frequency of operation is set according to technological requirement.
Return oil system is in operation and must keeps unimpeded, the oil return flexible pipe is non-warping, the oil return metal tube is not pressed partially, jet threeway, scavenge pipe, oil return valve, ball valve position are arranged from high to low, particular location is determined at the scene, but whole return oil system must be starkly lower than the bottom of the engine on the break-in stand.
Claims (5)
1. a single oilchannel fuel oil engines heat test oil return feeding system includes compressed air line system and oil feed line system, and they are connected with the air feed of engine fuel pipe assembly/oil end by shared air feed/oil pipe; It is characterized in that: a jet threeway is set on air feed/oil pipe, and the air feed/hydraulic fluid port of jet threeway is connected with the compressed air line system, and the vacuum port of jet threeway is connected with fuel rail assembly fuel feeding end, and the oil return opening of jet threeway is connected with the return line system; Oil feed line system and compressed air line system are connected to the air feed/hydraulic fluid port of jet threeway by shared ball valve;
The vacuum port of described jet threeway and the axis of air feed/hydraulic fluid port are and are in tilted layout, and air feed/hydraulic fluid port and oil return opening have corresponding three inner chambers that communicate at same axis in the inside of jet threeway, be respectively negative pressure of vacuum chamber, air feed/oil pocket and oil back chamber.
2. single oilchannel fuel oil engines heat test oil return feeding system according to claim 1 is characterized in that: the inlet end of the air feed/oil pocket of described jet threeway has the through hole of a diameter of phi 2, and the through hole end is 60 ° of chamferings, is horn-like from inside to outside.
3. single oilchannel fuel oil engines heat test oil return feeding system according to claim 1 and 2, it is characterized in that: described return line system comprises oil return valve, ball valve and the fuel oil pond on the scavenge pipe that is connected to jet threeway oil return opening in turn, and oil return valve adopts air operated reversing valve.
4. single oilchannel fuel oil engines heat test oil return feeding method is characterized in that it may further comprise the steps:
(1) fuel feeding: close return oil system pipeline and compressed air line system, open the oil feed line system, fuel oil by delivery valve through tapping into the air feed/hydraulic fluid port of jet threeway with compressed air line system shared air feed/oil pipe, this moment, the oil return opening of jet threeway was closed, fuel oil enters to the oil inlet and outlet of engine fuel pipe assembly by the vacuum port of jet threeway, gives engine oil;
(2) oil return: after heat test is finished, close the oil feed line system, open the return line system, then the compressed air line system is carried out the control at intermittence of one open-one close; At first open the compressed air line system, pressurized air is by blowing fuel tap through entering the air feed/hydraulic fluid port of jet threeway with oil feed line system shared air feed/oil pipe, fuel oil in the oil pipe is pushed back the return line system through the oil return opening of jet threeway under the effect of malleation, this moment, jet siphoned away the gas in the jet threeway negative pressure of vacuum chamber, produced negative pressure; Closes compression air pipe system then, the negative pressure of vacuum by jet threeway vacuum port is back to the return line system with the Residual oil sucking-off in the engine fuel pipe assembly through oil return opening; By on-off repeatedly, form repeatedly " pressure-suction ", the oily full scale clearance in the engine fuel pipe assembly is clean;
The vacuum port of described jet threeway and the axis of air feed/hydraulic fluid port are and are in tilted layout, and air feed/hydraulic fluid port and oil return opening have corresponding three inner chambers that communicate at same axis in the inside of jet threeway, be respectively negative pressure of vacuum chamber, air feed/oil pocket and oil back chamber.
5. single oilchannel fuel oil engines heat test oil return feeding method according to claim 4 is characterized in that the air feed/oil pocket inlet end of described jet threeway has the through hole of a diameter of phi 2, and the through hole end is 60 ° of chamferings, is horn-like from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710092801A CN101135608B (en) | 2007-09-30 | 2007-09-30 | Single oilchannel fuel oil engines heat test oil return feeding system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710092801A CN101135608B (en) | 2007-09-30 | 2007-09-30 | Single oilchannel fuel oil engines heat test oil return feeding system and method |
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| Publication Number | Publication Date |
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| CN101135608A CN101135608A (en) | 2008-03-05 |
| CN101135608B true CN101135608B (en) | 2010-05-26 |
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| CN200710092801A Expired - Fee Related CN101135608B (en) | 2007-09-30 | 2007-09-30 | Single oilchannel fuel oil engines heat test oil return feeding system and method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103808514B (en) * | 2014-02-28 | 2016-06-29 | 重庆爱特佳自动化控制有限公司 | A kind of for automobile engine entrucking performance monitor analysis equipment |
| CN104713734B (en) * | 2015-04-07 | 2017-02-22 | 上海中船三井造船柴油机有限公司 | Automatic measurement system and method for return oil of low-speed diesel engine for test run platform |
| CN109163852B (en) * | 2018-10-23 | 2020-06-26 | 南通联荣集团有限公司 | Container bag oil valve testing equipment |
| CN113202602A (en) * | 2021-05-31 | 2021-08-03 | 东风商用车有限公司 | Diesel engine aftertreatment hydrocarbon injection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105583A (en) * | 1986-07-22 | 1988-02-17 | 贵州工学院 | Impact stationary mixer and application system thereof |
| CN2637751Y (en) * | 2003-07-22 | 2004-09-01 | 撒建安 | Fuel-saving device for diesel engine |
| CN2773657Y (en) * | 2004-08-18 | 2006-04-19 | 长安汽车（集团）有限责任公司 | Fuel-oil centralized supply system for thermal experiment |
| CN1268836C (en) * | 2001-02-28 | 2006-08-09 | 唐诗庆 | Quick ultraprecision reworking process of motorcycle engine on assembly line |
| CN2898007Y (en) * | 2006-03-17 | 2007-05-09 | 成都绿水科技有限公司 | Efficient fluid jetter |
| CN201083156Y (en) * | 2007-09-30 | 2008-07-09 | 重庆长安汽车股份有限公司 | Single oil way oil engine heat test oil feeding returning system |
-
2007
- 2007-09-30 CN CN200710092801A patent/CN101135608B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105583A (en) * | 1986-07-22 | 1988-02-17 | 贵州工学院 | Impact stationary mixer and application system thereof |
| CN1268836C (en) * | 2001-02-28 | 2006-08-09 | 唐诗庆 | Quick ultraprecision reworking process of motorcycle engine on assembly line |
| CN2637751Y (en) * | 2003-07-22 | 2004-09-01 | 撒建安 | Fuel-saving device for diesel engine |
| CN2773657Y (en) * | 2004-08-18 | 2006-04-19 | 长安汽车（集团）有限责任公司 | Fuel-oil centralized supply system for thermal experiment |
| CN2898007Y (en) * | 2006-03-17 | 2007-05-09 | 成都绿水科技有限公司 | Efficient fluid jetter |
| CN201083156Y (en) * | 2007-09-30 | 2008-07-09 | 重庆长安汽车股份有限公司 | Single oil way oil engine heat test oil feeding returning system |
Non-Patent Citations (5)
| Title |
|---|
| JP昭57-135224A 1982.08.20 |
| JP昭63-193000A 1988.08.10 |
| JP特开2002-347899A 2002.12.04 |
| 李明诚.发动机燃油系统回油装置的使用与维护.现代车用动力 3.2004,(3),54. |
| 李明诚.发动机燃油系统回油装置的使用与维护.现代车用动力 3.2004,(3),54. * |
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| CN101135608A (en) | 2008-03-05 |
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Granted publication date: 20100526 |