CN201650407U - Negative pressure aspirator for crankcase of 240 diesel engine - Google Patents
Negative pressure aspirator for crankcase of 240 diesel engine Download PDFInfo
- Publication number
- CN201650407U CN201650407U CN2010201677365U CN201020167736U CN201650407U CN 201650407 U CN201650407 U CN 201650407U CN 2010201677365 U CN2010201677365 U CN 2010201677365U CN 201020167736 U CN201020167736 U CN 201020167736U CN 201650407 U CN201650407 U CN 201650407U
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- China
- Prior art keywords
- crankcase
- negative pressure
- oil
- diesel engine
- filter device
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- Expired - Fee Related
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Abstract
The utility model relates to a negative pressure aspirator for a crankcase of a 240 diesel engine. An air inlet pipe (2) of an oil and gas filter (6) is connected with a breathing hole (1) of a crankcase (8); an exhaust pipe (3) of the oil and gas filter (6) is communicated with the environmental atmosphere; an oil return pipe (4) is also arranged between the oil and gas filter (6) and the crankcase (8); a blower (5) is arranged in front of the oil and gas filter (6); and a bypass adjusting butterfly valve (7) is arranged between the air inlet pipe (2) and the exhaust pipe (3). The negative pressure aspirator has the advantages that the bypass adjusting butterfly valve (7) is provided with a group of openness position and position locking devices so that suitable negative pressure can be generated in the crankcase (8). The air inlet pipe (2) in front of the blower (5) keeps ascending and has no oil storage bending pipes. The crankcase (8) completes the exhausting process under the negative pressure condition, ensures the successful completion of the exhausting process, and also protects certain low-pressure sealing places such as crankshaft oil seal in the crankcase (8) do not leak the engine oil.
Description
Technical field
The utility model relates to a kind of crank case of internal combustion engine resuscitation apparatus, relates in particular to a kind of 240 diesel engine crankcase resuscitation apparatuss.
Background technique
Reciprocating internal combustion engine in the course of the work, the high temperature and high pressure gas in the cylinder inevitably can leak in the crankcase, so crankcase must be provided with pneumostome and the external world carries out gas exchange, with balance crankshaft case pressure.The traditional crankcase breather design of 240 diesel engines is to rely on the malleation of gas formation in the crankcase to be discharged in the atmosphere by the hydrocarbon filter device at pneumostome place; its shortcoming is that crankcase formation malleation and hydrocarbon filter device efficient are not high; because the effective words crankcase pressure of filtering is just too high, can cause that machine oil is aging too fast, consequences such as some low pressure seals on the action of crankcase pressure protective switch and the diesel engine and lubrication failure.
The model utility content
Technical problem to be solved in the utility model is for the user provides a kind of 240 diesel engine crankcase negative pressure devices, makes crankcase finish exhaust process under the condition of negative pressure, makes the oil level that contains in the waste gas of discharge few.
For solving the problems of the technologies described above, the utility model has adopted following technological scheme: this 240 diesel engine crankcase negative pressure devices, the suction tude of hydrocarbon filter device is connected with the crankcase respiratory mouth, the outlet pipe of hydrocarbon filter device is connected with ambient atmosphere, also is provided with return tube between hydrocarbon filter device and the crankcase; Before the hydrocarbon filter device, be provided with blower fan, between suction tude and outlet pipe, be provided with bypass and regulate butterfly valve.It is negative pressure that said structure makes in the crankcase, changes the state that crankcase is worked under barotropic condition, and crankcase is worked under negative pressure state.
As improvement of the technical scheme; described bypass is regulated butterfly valve and is provided with one group of aperture position and position locking device thereof; make and produce suitable negative pressure in the crankcase; guaranteed that promptly exhaust process finishes smoothly, protected some low pressure seal places such as the crank shaft oil seal in the crankcase can the generator oil seepage again.
As improvement of the technical scheme, the position of air inlet is higher than the pneumostome of crankcase,, make the preceding suction tude of blower fan keep continuing to rise, no trapped fuel is curved.Can be not big because of mist of oil in the pipeline, it is curved to occur oil after the condensation, and blocking-up oil gas makes pneumostome lose the ventilation effect by resuscitation apparatus, reduces the content of machine oil in the waste gas.
As improvement of the technical scheme, hydrocarbon filter device and blower fan are rigidly connected, and take up room with minimizing.
The utility model compared with prior art has following advantage: make crank case of internal combustion engine remain on a suitable negative pressure working state, guarantee that exhaust is unobstructed.Overcome crankcase simultaneously and under the malleation working state, caused aging too fast, the crankcase pressure protective switch action of machine oil, and consequence such as machine oil too high levels in some low pressure seals on the diesel engine and lubrication failure and the exhaust.
After reading the detailed description of the utility model mode of execution in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Accompanying drawing is an embodiment's of the utility model 240 diesel engine crankcase negative pressure devices a structural representation.
Embodiment
Describe mode of execution of the present utility model in detail below in conjunction with accompanying drawing.
Select suitable little air quantity high-head motor driving blower fan 5, hydrocarbon filter device 6 is arranged in blower fan 5 outlets, and bypass is installed on pipeline regulates butterfly valve 7, guarantees that diesel engine also can produce suitable negative pressure in the crankcase 8 when full load.Negative pressure is unsuitable too high, generally be controlled within 10 column, the too high meeting of negative pressure makes the machine oil of condensation in the resuscitation apparatus suction tude 2 be difficult for refluxing, and also makes by the oil gas of resuscitation apparatus more simultaneously, it is bigger to filter the oil level that refluxes the back, the lost of life of hydrocarbon filter device 6 filter cores.The position of air inlet 10 must be higher than the pneumostome 1 of diesel engine, and strives for the maximum distance that exceeds as far as possible, guarantees what air inlet pipeline 2 continued to rise, and it is curved trapped fuel to occur.Mist of oil is big in the air inlet pipeline 2, and condensed machine oil will be along return line 4 crankcase 8 that refluxes back, if it is curved to occur trapped fuel in the pipeline; can pass through resuscitation apparatus by blocking-up oil gas; make the pneumostome of diesel engine lose the effect of ventilation, cause crankcase pressure more and more higher, until stoppage protection.
Though described mode of execution of the present utility model in conjunction with the accompanying drawings, those skilled in the art can make various distortion or modification within the scope of the appended claims.When the aperture position of valve 7 operates in the full load operating mode according to diesel engine, reach suitable crankcase 8 negative pressure by adjusting butterfly valve 7.The return line 4 of hydrocarbon filter device is connected to crankcase 8, should guarantee that oil return is unobstructed.
The present invention is on the basis of reasonable computation, select the suitable motor-driven blower fan 5 of little air quantity high-head, hydrocarbon filter device 6 is arranged in the blower fan outlet, and bypass is installed on pipeline regulates butterfly valve 7, guarantees that diesel engine also can produce suitable negative pressure in the crankcase when full load.Negative pressure is unsuitable too high, generally be controlled within 10 column, the too high meeting of negative pressure makes the machine oil of condensation in the preceding air inlet pipeline 2 of resuscitation apparatus be difficult for refluxing, and also makes by the oil gas of resuscitation apparatus more simultaneously, it is bigger to filter the oil level that refluxes the back, the lost of life of hydrocarbon filter device 6 filter cores.This programme is in concrete enforcement, and the position of air inlet 10 must be higher than the pneumostome 1 of diesel engine, and strives for the maximum distance that exceeds as far as possible, and the preceding air inlet pipeline 2 before the device that ensures respiration continues to rise, and it is curved trapped fuel to occur.Mist of oil is big in the preceding air inlet pipeline 2 before the resuscitation apparatus; condensed machine oil will be along return line 4 crankcase that refluxes back; if it is curved to occur trapped fuel in the pipeline; can pass through resuscitation apparatus by blocking-up oil gas; make the pneumostome of diesel engine lose the effect of ventilation; cause crankcase pressure more and more higher, move until stoppage protection.
Though described mode of execution of the present utility model in conjunction with the accompanying drawings, those skilled in the art can make various distortion or modification within the scope of the appended claims in related domain.
Claims (5)
1. diesel engine crankcase negative pressure device, the suction tude (2) of hydrocarbon filter device (6) is connected with the pneumostome (1) of crankcase (8), the outlet pipe (3) of hydrocarbon filter device (6) is connected with ambient atmosphere, also be provided with return line (4) between hydrocarbon filter device (6) and the crankcase (8), it is characterized in that:, between suction tude (2) and outlet pipe (3), be provided with bypass and regulate butterfly valve (7) at the preceding blower fan (5) that is provided with of hydrocarbon filter device (6).
2. 240 diesel engine crankcase negative pressure devices according to claim 1 is characterized in that: described bypass is regulated butterfly valve (7) and is provided with one group of aperture position and position locking device thereof.
3. 240 diesel engine crankcase negative pressure devices according to claim 1 is characterized in that: the preceding suction tude (2) of blower fan (5) will keep continuing to rise, and no trapped fuel is curved.
4. 240 diesel engine crankcase negative pressure devices according to claim 1 is characterized in that: the position of the intake grill (10) of blower fan (5) is higher than the pneumostome (1) of crankcase (8).
5. 240 diesel engine crankcase negative pressure devices according to claim 1 is characterized in that: hydrocarbon filter device (6) and blower fan (5) are rigidly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201677365U CN201650407U (en) | 2010-04-23 | 2010-04-23 | Negative pressure aspirator for crankcase of 240 diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201677365U CN201650407U (en) | 2010-04-23 | 2010-04-23 | Negative pressure aspirator for crankcase of 240 diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650407U true CN201650407U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201677365U Expired - Fee Related CN201650407U (en) | 2010-04-23 | 2010-04-23 | Negative pressure aspirator for crankcase of 240 diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650407U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733887A (en) * | 2012-06-29 | 2012-10-17 | 中国北车集团大连机车车辆有限公司 | Exhaust gas discharging device of diesel engine crankcase |
| CN103670599A (en) * | 2013-12-05 | 2014-03-26 | 中国北车集团大连机车车辆有限公司 | Diesel engine crank case negative pressure device |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN110332032A (en) * | 2019-07-22 | 2019-10-15 | 四川华气动力有限责任公司 | A kind of negative pressure formation device based on the application of natural gas engine crankcase |
-
2010
- 2010-04-23 CN CN2010201677365U patent/CN201650407U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733887A (en) * | 2012-06-29 | 2012-10-17 | 中国北车集团大连机车车辆有限公司 | Exhaust gas discharging device of diesel engine crankcase |
| CN103670599A (en) * | 2013-12-05 | 2014-03-26 | 中国北车集团大连机车车辆有限公司 | Diesel engine crank case negative pressure device |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN110332032A (en) * | 2019-07-22 | 2019-10-15 | 四川华气动力有限责任公司 | A kind of negative pressure formation device based on the application of natural gas engine crankcase |
| CN110332032B (en) * | 2019-07-22 | 2024-01-30 | 四川华气动力有限责任公司 | Negative pressure forming device based on natural gas engine crankcase is used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20170423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |