CN1924308A - Engine crankshaft ventilation system - Google Patents
Engine crankshaft ventilation system Download PDFInfo
- Publication number
- CN1924308A CN1924308A CN 200510094168 CN200510094168A CN1924308A CN 1924308 A CN1924308 A CN 1924308A CN 200510094168 CN200510094168 CN 200510094168 CN 200510094168 A CN200510094168 A CN 200510094168A CN 1924308 A CN1924308 A CN 1924308A
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- CN
- China
- Prior art keywords
- gas
- oil
- deaerator
- valve
- ventilation system
- 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.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 title claims description 18
- 238000000926 separation method Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 23
- 239000003921 oil Substances 0.000 description 17
- 239000010721 machine oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010002368 Anger Diseases 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Images
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
This invention discloses one motor curve shaft ventilating system, which comprises PCV valve, oil and gas isolator and pipe path, wherein, it leads out oil gas into oil and gas isolator from curve shaft case gas cover then through PCV valve into gas-in branch tube into oil bottom shell; the isolator and oil bottom tube path are set with single valve; at high speed of motor, gas enters pressure increasing device with one single valve fixed between gas tube and oil and gas isolator.
Description
Technical field
The present invention relates to a kind of engine crankshaft ventilation system, relate in particular to a kind of crankcase ventilation system that is particularly suitable for gasoline supercharging engine.
Background technique
Because the existence of piston air leakage, and the evaporation of the inner machine oil of oil sump along with the increase of engine operational cycle number of times, will raise gradually at crankcase gas inside pressure, will cause the inner oil gas of crankcase to leak befouling environment like this; And, will produce irascible danger along with the continuous rising of crankcase internal gas pressure; The crankcase internal pressure raises simultaneously, with increasing the resistance of descent of piston, influences the output of engine power.In valve chamber cover inside,, on its conduit place also can combustion gas, go here and there valve chamber cover inside because in-cylinder pressure is very big; In addition, the inner rising owing to temperature of valve cage produces machine oil steam, and the valve cage internal pressure is further raise.Adopted the ventilation system of open type in the past, directly the crankcase internal gas is communicated with atmosphere, but such on the one hand befouling environment also can cause outside foul to be seeped into engine interior on the one hand in addition and influences working life of the turbidity test and the related components of motor.Along with the further strictness that car discharging, environmental legislation require, in time discharge for the gas of combustion and the oil gas of crankcase is inner and valve chamber cover inside, reduce its internal pressure, prevent the pollution of the environment, design the crankcase ventilation system of a cover enclosed usually.The working principle of general seen engine crankshaft ventilation system is: crankcase is communicated with valve cage, by a gas and oil separating plant, and by pipeline gas is wherein led to intake manifold, burn to the firing chamber by air inlet then.
The characteristic of supercharged engine is: the degree of vacuum of inlet manifold inside is bigger behind the pressurized machine when low speed; The inlet manifold air pressure inside is very big during high speed, and the degree of vacuum of pressurized machine front is big relatively at this moment.Do not find as yet, be directed to baroque supercharged engine working principle, the crankcase ventilation system of design.
Summary of the invention
The present invention better separates, effectively controls this technical problem of crankcase pressure inside for solving supercharged engine crankcase ventilation system oil gas, a kind of engine crankshaft ventilation system is provided, this system not only has Oil-gas Separation, walks to become better, and has reliability height, rational in infrastructure, characteristic of simple.
The technical solution adopted for the present invention to solve the technical problems is that a kind of engine crankshaft ventilation system comprises PCV valve, deaerator and pipeline; The oil gas of drawing from crankcase valve chamber cover cap enters the deaerator separation, and the profit after the separation enters oil sump; It is characterized in that: the gas after the separation divides two circuits by three-way pipe, when low engine speed, since the degree of vacuum of inlet manifold inside greater than pressurized machine before degree of vacuum in the facial canal, gas enters inlet manifold inside, in order to prevent that pressurized machine front inner air tube from entering air pipeline, an one-way valve need be installed between pressurized machine front tracheae and deaerator simultaneously; When high engine speeds, the suction tude internal vacuum of pressurized machine front is greater than inlet manifold, gas enters pressurized machine front tracheae, simultaneously in order to prevent that the compression gas later in the inlet manifold from entering ventilation system, need install an one-way valve between inlet manifold and deaerator.In addition, the inlet manifold internal vacuum is very big during owing to low speed, is unlikely to low in order to control the crankcase pressure inside, between deaerator and inlet manifold a pressure controlled valve (PCV valve) is being installed.
For preventing when the PCV valve occur to lose efficacy, machine oil is gone into intake manifold by suck-back and is caused the damage of whole motor from oil sump.On deaerator and oil sump pipeline, one-way valve is set.
Good effect of the present invention is, owing to according to engine operating condition, adopt the system pipeline trend to be divided into two covers, oil gas enters inlet manifold (behind the pressurized machine) during low engine speed, and before oil gas entered pressurized machine during high speed, the oil gas trend was more reasonable.For machine oil steam is better separated, this system design deaerator.Increase pressure controlled valve (PCV valve), effectively controlled the crankcase pressure inside.In order to prevent that high-pressure air enters crankcase ventilation system under the different operating modes, two one-way valves have been designed.Owing on deaerator and oil sump pipeline, one-way valve is set, like this when losing efficacy appears in the PCV valve, can prevent that machine oil from being gone into intake manifold by suck-back and causing the damage of whole motor from oil sump.This crankcase ventilation system can effectively increase petrolic reliability, improves the car load Security to a certain extent.Simple in structure, easy accessibility is suitable for enforcement, and is with low cost.
Description of drawings
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a system construction schematic representation of the present invention.
Embodiment
In the embodiment shown in fig. 1, a kind of engine crankshaft ventilation system comprises PCV valve, deaerator and pipeline; The oil gas of drawing from crankcase valve chamber cover cap enters the deaerator separation, and the profit after the separation enters oil sump; It is characterized in that: the gas after the separation divides two circuits by three-way pipe, when low engine speed, since the degree of vacuum of inlet manifold inside greater than pressurized machine before degree of vacuum in the facial canal, gas enters inlet manifold inside, in order to prevent that pressurized machine front inner air tube from entering air pipeline, an one-way valve need be installed between pressurized machine front tracheae and deaerator simultaneously; When high engine speeds, the suction tude internal vacuum of pressurized machine front is greater than inlet manifold, gas enters pressurized machine front tracheae, simultaneously in order to prevent that the compression gas later in the inlet manifold from entering ventilation system, need install an one-way valve between inlet manifold and deaerator.In addition, the inlet manifold internal vacuum is very big during owing to low speed, is unlikely to low in order to control the crankcase pressure inside, between deaerator and inlet manifold a pressure controlled valve (PCV valve) is being installed.For preventing when the PCV valve occur to lose efficacy, machine oil is gone into intake manifold by suck-back and is caused the damage of whole motor from oil sump.On deaerator and oil sump pipeline, one-way valve is set.
Claims (2)
1, a kind of engine crankshaft ventilation system comprises PCV valve, deaerator and pipeline; The oil gas of drawing from crankcase valve chamber cover cap enters the deaerator separation, and the profit after the separation enters oil sump; It is characterized in that: the gas after the separation divides two circuits by three-way pipe, and when low engine speed, gas enters inlet manifold inside by the PCV valve, and an one-way valve is installed between inlet manifold and deaerator; When high engine speeds, gas enters pressurized machine front tracheae, and an one-way valve is installed between pressurized machine front tracheae and deaerator.
2, engine crankshaft ventilation system according to claim 1 is characterized in that: on deaerator and oil sump pipeline one-way valve is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094168 CN1924308A (en) | 2005-08-29 | 2005-08-29 | Engine crankshaft ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094168 CN1924308A (en) | 2005-08-29 | 2005-08-29 | Engine crankshaft ventilation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1924308A true CN1924308A (en) | 2007-03-07 |
Family
ID=37817089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510094168 Pending CN1924308A (en) | 2005-08-29 | 2005-08-29 | Engine crankshaft ventilation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1924308A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425474A (en) * | 2011-11-11 | 2012-04-25 | 天津鹏翎胶管股份有限公司 | Pipeline assembly of turbocharging automobile crankcase ventilation system |
| CN103256099A (en) * | 2013-02-22 | 2013-08-21 | 浙江吉利汽车研究院有限公司杭州分公司 | Electric crankcase ventilation system |
| CN103362597A (en) * | 2013-06-27 | 2013-10-23 | 奇瑞汽车股份有限公司 | Crankcase ventilation system of supercharged gasoline engine and work method of crankcase ventilation system |
| CN103790674A (en) * | 2012-10-31 | 2014-05-14 | 重庆长安汽车股份有限公司 | Oil-gas separator |
| CN102216574B (en) * | 2008-09-24 | 2015-09-09 | S·V·蒙罗斯 | Pollution control system |
| CN105464749A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Oil-gas separator for plateau simulation test |
| CN106194331A (en) * | 2016-09-30 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of engine with supercharger crankcase ventilation system |
| CN107605570A (en) * | 2017-07-21 | 2018-01-19 | 浙江吉利控股集团有限公司 | A kind of triton pipeline break-make monitoring of structures |
| CN109469531A (en) * | 2018-10-29 | 2019-03-15 | 台州吉利罗佑发动机有限公司 | A crankcase ventilation system oil and gas separator assembly and vehicle |
| CN110219715A (en) * | 2019-06-11 | 2019-09-10 | 潍柴动力股份有限公司 | A kind of closed cycle respiratory system and automobile |
| CN110219716A (en) * | 2019-06-28 | 2019-09-10 | 潍柴动力股份有限公司 | A kind of closed cycle respiratory system and engine assembly |
| CN112284747A (en) * | 2020-10-26 | 2021-01-29 | 无锡沃尔福汽车技术有限公司 | Function test equipment for engine crankcase ventilation system and arrangement method |
| CN115182804A (en) * | 2022-07-12 | 2022-10-14 | 东风康明斯发动机有限公司 | Engine closed crankcase breathing system and air-driven breathing method |
-
2005
- 2005-08-29 CN CN 200510094168 patent/CN1924308A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102216574B (en) * | 2008-09-24 | 2015-09-09 | S·V·蒙罗斯 | Pollution control system |
| CN102425474A (en) * | 2011-11-11 | 2012-04-25 | 天津鹏翎胶管股份有限公司 | Pipeline assembly of turbocharging automobile crankcase ventilation system |
| CN103790674A (en) * | 2012-10-31 | 2014-05-14 | 重庆长安汽车股份有限公司 | Oil-gas separator |
| CN103256099A (en) * | 2013-02-22 | 2013-08-21 | 浙江吉利汽车研究院有限公司杭州分公司 | Electric crankcase ventilation system |
| CN103362597A (en) * | 2013-06-27 | 2013-10-23 | 奇瑞汽车股份有限公司 | Crankcase ventilation system of supercharged gasoline engine and work method of crankcase ventilation system |
| CN103362597B (en) * | 2013-06-27 | 2016-01-13 | 奇瑞汽车股份有限公司 | A kind of gasoline supercharging engine crankcase ventilation system and method for work thereof |
| CN105464749A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Oil-gas separator for plateau simulation test |
| CN106194331A (en) * | 2016-09-30 | 2016-12-07 | 奇瑞汽车股份有限公司 | A kind of engine with supercharger crankcase ventilation system |
| CN107605570A (en) * | 2017-07-21 | 2018-01-19 | 浙江吉利控股集团有限公司 | A kind of triton pipeline break-make monitoring of structures |
| CN109469531A (en) * | 2018-10-29 | 2019-03-15 | 台州吉利罗佑发动机有限公司 | A crankcase ventilation system oil and gas separator assembly and vehicle |
| CN110219715A (en) * | 2019-06-11 | 2019-09-10 | 潍柴动力股份有限公司 | A kind of closed cycle respiratory system and automobile |
| CN110219716A (en) * | 2019-06-28 | 2019-09-10 | 潍柴动力股份有限公司 | A kind of closed cycle respiratory system and engine assembly |
| CN110219716B (en) * | 2019-06-28 | 2020-08-21 | 潍柴动力股份有限公司 | Closed circulation respiratory and engine assembly |
| CN112284747A (en) * | 2020-10-26 | 2021-01-29 | 无锡沃尔福汽车技术有限公司 | Function test equipment for engine crankcase ventilation system and arrangement method |
| CN115182804A (en) * | 2022-07-12 | 2022-10-14 | 东风康明斯发动机有限公司 | Engine closed crankcase breathing system and air-driven breathing method |
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