CN201747433U - Oil return device of crankcase ventilation system - Google Patents
Oil return device of crankcase ventilation system Download PDFInfo
- Publication number
- CN201747433U CN201747433U CN2010202968156U CN201020296815U CN201747433U CN 201747433 U CN201747433 U CN 201747433U CN 2010202968156 U CN2010202968156 U CN 2010202968156U CN 201020296815 U CN201020296815 U CN 201020296815U CN 201747433 U CN201747433 U CN 201747433U
- Authority
- CN
- China
- Prior art keywords
- oil return
- cavity
- oil
- ventilation system
- crankcase ventilation
- Prior art date
- 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 - Fee Related
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 20
- 239000003921 oil Substances 0.000 description 34
- 239000010721 machine oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
Images
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model aims at providing an oil return device of a crankcase ventilation system with low cost and reliable performance, which comprises a casing. The key point is that a cavity is arranged in the casing; an oil inlet pipeline communicated with the cavity is arranged at the top of the casing; an oil return pipeline communicated with the cavity is arranged at the bottom of the casing; an elastic diaphragm is fixed on the side wall of the cavity; and the free end of the elastic diaphragm is positioned below the oil inlet pipeline and closes the oil return pipeline by means of self elasticity. The oil return device of the crankcase ventilation system has simple structure and low cost, realizes the automatic control of the oil return pipeline by using the elastic diaphragm and ensures that the oil return is smoother and more reliable.
Description
Technical field
The utility model belongs to the crankcase ventilation system technical field of motor car engine, specially refers to the oil return apparatus of crankcase ventilation system.
Background technique
Along with the requirement of Abgasgesetz is more and more stricter, the crankcase ventilation system of present most of motors has all adopted closed type structure, and adopt external deaerator, its external return line stretches to below the machine oil liquid level of engine sump tank, to avoid air to enter return tube, influence oil return.The fluctuation that the oil return of this kind oil return apparatus is subjected to crankcase pressure limits, and when crankcase pressure hour, oil return is very smooth and easy; When crankcase pressure was big, the machine oil of separating in the triton can not be back to oil sump smoothly.In addition, when the motor immediate inclination, the mouth of pipe of return tube can break away from liquid level, and this moment, air can enter into return tube, influenced oil return.The external return line of above-mentioned oil return apparatus had both increased the layout difficulty in space, had increased cost again, and external pipeline leaks in air for a long time cruelly, was subjected to the thermal radiation of high ambient temperatures part, and was aging easily.
The model utility content
The purpose of this utility model is the oil return apparatus that proposes a kind of crankcase ventilation system of with low cost, reliable performance.
The oil return apparatus of crankcase ventilation system of the present utility model comprises a housing, key is to have a cavity in the described housing, the top of housing has the inflow pipeline that is communicated with cavity, the bottom of housing has the oil returning tube that is communicated with cavity, the sidewall of described cavity is fixed with a flexible sheet, and the free end of described flexible sheet is positioned at the below of inflow pipeline and relies on self enclosed elastic to live in oil-piping.
During the oil return apparatus oil return of above-mentioned crankcase ventilation system, because the sealing process of flexible sheet, machine oil can be put aside in inflow pipeline, when the oil level of savings in inflow pipeline gets more and more, when its weight surpasses the ability to bear of flexible sheet, the elastic membrane sector-meeting is curved downwards under the effect of engine oil pressure, inflow pipeline is communicated with cavity, thereby the machine oil of savings in inflow pipeline is released by cavity and oil returning tube successively.After draining was finished, flexible sheet can restore to the original state again, closes inflow pipeline.Therefore this oil return apparatus can not cause air to enter crankcase ventilation system and influence oil return, and it is more reliable to work; In addition, this oil return apparatus only need be installed in the engine crankcase and get final product, and need not external pipeline, thereby has saved cost.
For preventing that oil level is too big, make flexible sheet produce inelastic deformation and lost efficacy, the below of described flexible sheet preferably is provided with the stop bit post to flexible sheet direction projection, when the deformation of flexible sheet exceeds prespecified range, the stop bit post will form support flexible sheet, avoids the flexible sheet excessive deformation and loses efficacy.
For making things convenient for oil return, described oil returning tube preferably be positioned at inflow pipeline under.
Produce and install for convenient, described housing is preferably fastened by upper shell and lower shell body and forms.
The oil return apparatus of crankcase ventilation system of the present utility model is simple in structure, and is with low cost, utilizes flexible sheet to realize the automatic control of drainback passage, guarantees that oil return is more smooth and easy, reliable.
Description of drawings
Fig. 1 is the structural representation of the oil return apparatus of crankcase ventilation system of the present utility model.
Embodiment
Describe the utility model in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the oil return apparatus of the crankcase ventilation system of present embodiment comprises a housing that is formed by upper shell 1 and lower shell body 2 fastenings, has a cavity 3 in the housing, the top of housing has the inflow pipeline 4 that is communicated with cavity 3, the bottom of housing has the oil returning tube 5 that is communicated with cavity 3 over against the position of inflow pipeline 4, the sidewall of cavity 3 is fixed with a flexible sheet 6, the free end of flexible sheet 6 is positioned at the below of inflow pipeline 4 and relies on self enclosed elastic to live in oil-piping 4, and the below of flexible sheet 6 also is provided with the stop bit post 7 to flexible sheet 6 direction projectioies
The working principle of the oil return apparatus of above-mentioned crankcase ventilation system is as follows:
During oil return, because the sealing process of flexible sheet 6, machine oil can be put aside in inflow pipeline 4, when the oil level of savings in inflow pipeline 4 gets more and more, when its weight surpasses the ability to bear of flexible sheet 6, flexible sheet 6 can be curved downwards under the effect of engine oil pressure, inflow pipeline 4 is communicated with cavity 3, thereby the machine oil of savings in inflow pipeline 4 is released by cavity 3 and oil returning tube 5 successively.After draining was finished, flexible sheet 6 can restore to the original state again, closed inflow pipeline 4.When the deformation of flexible sheet 6 exceeded prespecified range, stop bit post 7 will form flexible sheet 6 and support, and avoided flexible sheet 6 excessive deformations and lost efficacy.
Influence oil return because above-mentioned oil return apparatus can not cause air to enter crankcase ventilation system, therefore work is more reliable; In addition, this oil return apparatus only need be installed in the engine crankcase and get final product, and need not external pipeline, thereby has saved cost.
Claims (4)
1. the oil return apparatus of a crankcase ventilation system, comprise a housing, it is characterized in that having a cavity in the described housing, the top of housing has the inflow pipeline that is communicated with cavity, the bottom of housing has the oil returning tube that is communicated with cavity, the sidewall of described cavity is fixed with a flexible sheet, and the free end of described flexible sheet is positioned at the below of inflow pipeline and relies on self enclosed elastic to live in oil-piping.
2. the oil return apparatus of crankcase ventilation system according to claim 1, the below that it is characterized in that described flexible sheet is provided with the stop bit post to flexible sheet direction projection.
3. the oil return apparatus of crankcase ventilation system according to claim 1 and 2, it is characterized in that described oil returning tube be positioned at inflow pipeline under.
4. the oil return apparatus of crankcase ventilation system according to claim 3 is characterized in that described housing is formed by upper shell and lower shell body fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202968156U CN201747433U (en) | 2010-08-17 | 2010-08-17 | Oil return device of crankcase ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202968156U CN201747433U (en) | 2010-08-17 | 2010-08-17 | Oil return device of crankcase ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747433U true CN201747433U (en) | 2011-02-16 |
Family
ID=43582116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202968156U Expired - Fee Related CN201747433U (en) | 2010-08-17 | 2010-08-17 | Oil return device of crankcase ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747433U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619589A (en) * | 2012-04-09 | 2012-08-01 | 奇瑞汽车股份有限公司 | Oil returning structure of ventilation system of engine crankcase and valve of oil returning structure thereof |
| CN103591339A (en) * | 2012-08-15 | 2014-02-19 | 保利达塑料德国有限两合公司 | Check vavle |
| CN103603706A (en) * | 2013-11-25 | 2014-02-26 | 广西玉柴机器股份有限公司 | Engine crankcase oil-gas separator |
| CN107420155A (en) * | 2017-07-21 | 2017-12-01 | 浙江吉利控股集团有限公司 | A kind of gs-oil separator oil-returning structure |
| CN109441590A (en) * | 2018-12-20 | 2019-03-08 | 芜湖钻石航空发动机有限公司 | A kind of aviation piston engine oil return apparatus and its oil return method |
-
2010
- 2010-08-17 CN CN2010202968156U patent/CN201747433U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619589A (en) * | 2012-04-09 | 2012-08-01 | 奇瑞汽车股份有限公司 | Oil returning structure of ventilation system of engine crankcase and valve of oil returning structure thereof |
| CN103591339A (en) * | 2012-08-15 | 2014-02-19 | 保利达塑料德国有限两合公司 | Check vavle |
| CN103603706A (en) * | 2013-11-25 | 2014-02-26 | 广西玉柴机器股份有限公司 | Engine crankcase oil-gas separator |
| CN107420155A (en) * | 2017-07-21 | 2017-12-01 | 浙江吉利控股集团有限公司 | A kind of gs-oil separator oil-returning structure |
| CN107420155B (en) * | 2017-07-21 | 2019-11-22 | 浙江吉利控股集团有限公司 | A kind of gs-oil separator oil-returning structure |
| CN109441590A (en) * | 2018-12-20 | 2019-03-08 | 芜湖钻石航空发动机有限公司 | A kind of aviation piston engine oil return apparatus and its oil return method |
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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: 20110216 Termination date: 20140817 |
|
| EXPY | Termination of patent right or utility model |