CN103397926A - Respiratory system of pressurization gasoline engine - Google Patents
Respiratory system of pressurization gasoline engine Download PDFInfo
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- CN103397926A CN103397926A CN2013103562858A CN201310356285A CN103397926A CN 103397926 A CN103397926 A CN 103397926A CN 2013103562858 A CN2013103562858 A CN 2013103562858A CN 201310356285 A CN201310356285 A CN 201310356285A CN 103397926 A CN103397926 A CN 103397926A
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Abstract
The invention relates to a respiratory system of a pressurization gasoline engine, which comprises a plastic cylinder cover shield component, a respirator ventilation hose I and a respirator ventilation hose II, wherein double oil-gas separators are integrated in the plastic cylinder cover shield component; one end of the respirator ventilation hose I is connected with a PCV (pollution-control valve) of a plastic cylinder cover shield, and the other end of the respirator ventilation hose I is communicated with an air inlet manifold; one end of the respirator ventilation hose II is connected with an air hole in the plastic cylinder cover shield, and the other end of the respirator ventilation hose II is communicated with the rear part of an air filter and the front end of a pressurizer; three gas blow-by holes are formed in the exhaust side of the cylinder cover of an engine cylinder; four oil return holes are formed in the air suction side of the cylinder cover of the engine cylinder. According to the respiratory system of the pressurization gasoline engine, the arrangements of an external oil-gas separator and a peripheral pipeline are eliminated, the number of rubber hoses is reduced to two, special parts are decreased, only one PCV is used, and the cost is reduced.
Description
Technical field
The invention belongs to field of internal combustion engine, belong to the deaerator field of internal-combustion engine, specifically refer to a kind of respiratory system of supercharging gasoline engine.
Background technique
Due to gapped between piston and cylinder hole, so when engine operation, the inflammable mixture and the gas of combustion that have few part creep in oil sump through the gap of piston and cylinder wall, in case it is many to enter the oil gas accumulation of oil sump, can't get rid of, will form air pressure, not only can dilute machine oil, cause the engine component insufficient lubrication, also can cause the serious consequence of machine oil abnormal consumption etc.The major function of respiratory system is that the oil gas in oil sump is sucked out, and allows it along with ozone enters cylinder together, burn and to be able to the contaminated solution problem, solves simultaneously the crankcase pressure balance.
Along with the increasingly stringent of Abgasgesetz, at present, the petrol engine mandatory requirement adopts PCV system.The external cyclone type oil-gas separator of the general employing of existing supercharging gasoline engine respiratory system, gas blowby enters into cyclone type oil-gas separator from the cylinder cap guard shield, High Rotation Speed by air-flow, mixer is through centrifugal action, oil after separation is got back to below the oil sump pasta through the oil return steel pipe along the internal chamber wall of deaerator, gas after separation flows into by another outlet of oily device separator the pipeline that leads to the PCV valve, by being further divided into two branch roads after PCV, article one, for being connected to intake manifold, other one be connected to supercharging before, an one-way valve is respectively arranged in two branch roads.When pressurized machine was not worked, clean air flowed to intake manifold, during pressurized machine work, before clean air flows to supercharging.
The external cyclone type oil-gas separator separating effect that now uses is not good, and its engine oil carrying quantity is much larger than 2g/h, and crankcase pressure can not be controlled effectively.When motor equipment turbosupercharger,, due to when pressurized machine is worked, be malleation in manifold, gas after separating can not enter in intake manifold again, before should entering another path-supercharging, the cyclone type oil-gas separator pressure loss is larger, and the pressure in crankcase is wayward.
The special purpose parts that the external deaerator needs is many, comprises 2 of cyclone type oil-gas separators, PCV valve, one-way valve, flexible pipe, and because special purpose parts is more, so cost is higher.
External cyclone type oil-gas separator is strict to position, and the cyclone type oil-gas separator pressure loss is larger, be arranged in the air inlet side.PCV valve position has requirement, and is as improper in position, and ponding freezes and causes PCV work not normal in arctic weather, the serious consequence of machine oil suck-back occurs.Height to oil return has strict demand, requires deaerator to arrange that height (apart from return opening) must be greater than 410mm.
The external deaerator needs the connection of many pipelines, and it is mainly the mode of clip that adds by rubber pipe that pipeline connects, and gas leakage has a big risk.
Summary of the invention
Require highly in order to overcome external cyclone type oil-gas separator arrangement space, special purpose parts is many, and line arrangement is complicated, and easily freeze winter, and the problem that cost is high has proposed the respiratory system technological scheme of a kind of supercharging gasoline engine of the application.
The present invention is achieved by the following technical solutions:
A kind of respiratory system of supercharging gasoline engine, comprise plastic cylinder cover assembly, resuscitation apparatus vent hose I and resuscitation apparatus vent hose II; Integrated pair of deaerator in described plastic cylinder cover assembly, an end of resuscitation apparatus vent hose I is connecting on the PCV valve of cylinder cap guard shield, and the other end is communicated with intake manifold; One end of resuscitation apparatus vent hose II connects the vent on the cylinder cap guard shield, and the other end is communicated with after air-strainer-the pressurized machine front end; Described engine cylinder-body cylinder cap exhaust side is provided with three gas blowby holes, and cylinder block and head air inlet side is provided with four spill ports; Bumping type+mazy gas and oil separating plant of the common composition of two deaerators and plastic cylinder guard shield.
Described deaerator includes crude separation chamber, labyrinth path and smart separation chamber, and the route of fuel-air mixture in deaerator is followed successively by crude separation chamber, labyrinth path and smart separation chamber.
Fuel-air mixture enters into the cylinder cap guard shield by three on the cylinder block and cylinder cover mouths of collaborating, wherein oarse-grained oil droplet drips by pre-separation, four spill ports by the air inlet side are got back in oil sump, passed labyrinth path baffle plate by the gas blowby of crude separation afterwards, pass through the aperture accelerating impact to smart separation chamber baffle plate, oil droplet is got back in oil sump by four spill ports of air inlet side more again.
Do not supplement fresh air at vent when the low-load turbosupercharger is not worked, collaborate and enter intake manifold from PCV valve side, directly burn; After the high load turbosupercharger was opened, PCV valve side can enter a small amount of fresh air of crankcase, collaborates and enters the air filter rear end by vent, then enters firing chamber and burns.
The invention has the beneficial effects as follows:
This respiratory system is integrated in two deaerators in the plastic cylinder guard shield, the two-stage of pre-separation chamber and smart separation chamber is separated and special labyrinth baffle design, make motor carry out Oil-gas Separation by different paths at low speed respectively during from high speed, the Oil-gas Separation mode of bumping type+mazy type combination has improved the efficiency of the Oil-gas Separation of supercharging type, the pressure loss is less, makes crank case pressure control arrive zone of reasonableness.Reduce the layout of external deaerator and peripheral pipeline, by many rubber pipes, reduced to two, reduced special purpose parts-only use a PVC valve, reduced cost.
Description of drawings
Fig. 1 is working principle structural drawing of the present invention;
Fig. 2 is respiratory system structural representation of the present invention;
Fig. 3 is integrated pair of deaerator schematic diagram in plastic cylinder cover assembly of the present invention;
Fig. 4 is the plan view of integrated pair of deaerator in plastic cylinder cover assembly of the present invention;
Fig. 5 is collaborate on cylinder body of the present invention hole and spill port schematic diagram;
Fig. 6 is collaborate on cylinder cap of the present invention hole and spill port schematic diagram;
Fig. 7 is gas blowby of the present invention and way to cycle oil schematic diagram.
The 1-PCV valve; The 2-ventilating hole; 3-respirator hose II; 4-cylinder cap guard shield; 5-resuscitation apparatus vent hose I; 6-pre-separation chamber; The 7-gas and oil separating plant; The 8-return opening; 9-essence separation chamber; 10-gas blowby mouth; The 11-return opening; 14-air inlet side; The 15-exhaust side; The 16-blow-by gas passage; The 17-drainback passage.
Embodiment
Below describe technological scheme of the present invention in detail by specific embodiment, should be understood that, following embodiment is only exemplary, only can be used for explaining and technological scheme of the present invention being described, and can not to be interpreted as is restriction to technical solution of the present invention.
As Fig. 1,2, this novel respiratory system comprises cylinder cap guard shield 4 assemblies, resuscitation apparatus vent hose I 5, resuscitation apparatus vent hose II 3; Integrated pair of gas and oil separating plant 7 in cylinder cap guard shield 4 assemblies, an end of resuscitation apparatus vent hose I 5 are connecting on PCV valve 1 on cylinder cap guard shield 4, and the other end is communicated with intake manifold; One end of resuscitation apparatus vent hose II 3 connects the vent 2 on the cylinder cap guard shield, and the other end is communicated with after air-strainer-the pressurized machine front end.
As Fig. 3,4, deaerator and the common gas and oil separating plant that forms a mazy type+bumping type of cylinder cap guard shield 4.Two deaerators are integrated on the plastic cylinder guard shield, deaerator is divided into pre-separation chamber 6 and also claims crude separation chamber and smart separation chamber 9, special labyrinth baffle plate via design, and the route of fuel-air mixture in deaerator is followed successively by crude separation chamber, labyrinth path and smart separation chamber.
Engine cylinder-body cylinder cap exhaust side 15 is provided with three gas blowby holes 10, and described gas blowby hole connects by blow-by gas passage 16; Cylinder block and head air inlet side 14 is provided with four return openings (8,11), and described return opening connects by drainback passage 17.
Oil-gas Separation is divided into two-stage carries out, the first order, and oarse-grained oil droplet drips and gets back in oil sump by pre-separation, the second level, passed the labyrinth baffle plate by the gas blowby of crude separation, then pass through the aperture accelerating impact to smart separation chamber baffle plate, oil droplet is got back in oil sump by four spill ports of air inlet side.Its illustrate into, fuel-air mixture enters into the cylinder cap guard shield by three on the cylinder block and cylinder cover mouths of collaborating, wherein oarse-grained oil droplet drips by pre-separation, four spill ports by the air inlet side are got back in oil sump, passed labyrinth path baffle plate by the gas blowby of crude separation afterwards, pass through the aperture accelerating impact to smart separation chamber baffle plate, oil droplet is got back in oil sump by four spill ports of air inlet side more again.
Do not supplement fresh air at vent 2 when the low-load turbosupercharger is not worked, collaborate and enter intake manifold from PCV valve 1 side, directly burn; After the high load turbosupercharger was opened, PCV valve side can enter a small amount of fresh air of crankcase, collaborates and enters the air filter rear end by vent 2, then enters firing chamber and burns.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present invention is by claims and be equal to and limit.
Claims (4)
1. the respiratory system of a supercharging gasoline engine, is characterized in that: comprise plastic cylinder cover assembly, resuscitation apparatus vent hose I and resuscitation apparatus vent hose II; Integrated pair of deaerator in described plastic cylinder cover assembly, an end of resuscitation apparatus vent hose I is connecting on the PCV valve of cylinder cap guard shield, and the other end is communicated with intake manifold; One end of resuscitation apparatus vent hose II connects the vent on the cylinder cap guard shield, and the other end is communicated with after air-strainer-the pressurized machine front end; Described engine cylinder-body cylinder cap exhaust side is provided with three gas blowby holes, and cylinder block and head air inlet side is provided with four spill ports; Bumping type+mazy gas and oil separating plant of the common composition of two deaerators and plastic cylinder guard shield.
2. the respiratory system of supercharging gasoline engine according to claim 1, it is characterized in that: described deaerator includes crude separation chamber, labyrinth path and smart separation chamber, and the route of fuel-air mixture in deaerator is followed successively by crude separation chamber, labyrinth path and smart separation chamber.
3. the respiratory system of supercharging gasoline engine according to claim 2, it is characterized in that: fuel-air mixture enters into the cylinder cap guard shield by three on the cylinder block and cylinder cover mouths of collaborating, wherein oarse-grained oil droplet drips by pre-separation, four spill ports by the air inlet side are got back in oil sump, passed labyrinth path baffle plate by the gas blowby of crude separation afterwards, pass through the aperture accelerating impact to smart separation chamber baffle plate, oil droplet is got back in oil sump by four spill ports of air inlet side more again.
4. the respiratory system of supercharging gasoline engine according to claim 1, is characterized in that: do not supplement fresh air at vent when the low-load turbosupercharger is not worked, collaborate and enter intake manifold from PCV valve side, directly burn; After the high load turbosupercharger was opened, PCV valve side can enter a small amount of fresh air of crankcase, collaborates and enters the air filter rear end by vent, then enters firing chamber and burns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103562858A CN103397926A (en) | 2013-08-15 | 2013-08-15 | Respiratory system of pressurization gasoline engine |
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| CN2013103562858A CN103397926A (en) | 2013-08-15 | 2013-08-15 | Respiratory system of pressurization gasoline engine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747252A (en) * | 2015-01-29 | 2015-07-01 | 重庆凯特动力科技有限公司 | Engine oil-gas separation device with good oil-gas separation effect |
| CN105003320A (en) * | 2015-08-12 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Improved structure of engine oil-gas separator |
| CN105003321A (en) * | 2015-08-12 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Improved structure for integrated oil-gas separator |
| CN106703998A (en) * | 2016-12-21 | 2017-05-24 | 中国燃气涡轮研究院 | Laminated restrictor |
| CN107524494A (en) * | 2017-10-24 | 2017-12-29 | 安徽江淮汽车集团股份有限公司 | A kind of engine crankshaft ventilation system |
| CN108223054A (en) * | 2017-12-29 | 2018-06-29 | 重庆小康工业集团股份有限公司 | The Pcv system of internal combustion engine |
| CN108223051A (en) * | 2017-12-30 | 2018-06-29 | 重庆小康工业集团股份有限公司 | Automobile integrated form cylinder head cover |
| CN109113833A (en) * | 2018-09-26 | 2019-01-01 | 绵阳新晨动力机械有限公司 | A kind of two-chamber independence gs-oil separator |
| CN113606037A (en) * | 2021-08-30 | 2021-11-05 | 安徽江淮汽车集团股份有限公司 | Open cylinder cap cleaning system |
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| US8122870B2 (en) * | 2008-06-17 | 2012-02-28 | Aisan Kogyo Kabushiki Kaisha | Blowby gas returning apparatus |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747252A (en) * | 2015-01-29 | 2015-07-01 | 重庆凯特动力科技有限公司 | Engine oil-gas separation device with good oil-gas separation effect |
| CN105003320A (en) * | 2015-08-12 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Improved structure of engine oil-gas separator |
| CN105003321A (en) * | 2015-08-12 | 2015-10-28 | 安徽江淮汽车股份有限公司 | Improved structure for integrated oil-gas separator |
| CN105003321B (en) * | 2015-08-12 | 2017-07-18 | 安徽江淮汽车集团股份有限公司 | A kind of integration type oil-gas separator improved structure |
| CN105003320B (en) * | 2015-08-12 | 2017-08-25 | 安徽江淮汽车集团股份有限公司 | A kind of oil-gas separating device for engine improved structure |
| CN106703998A (en) * | 2016-12-21 | 2017-05-24 | 中国燃气涡轮研究院 | Laminated restrictor |
| CN107524494A (en) * | 2017-10-24 | 2017-12-29 | 安徽江淮汽车集团股份有限公司 | A kind of engine crankshaft ventilation system |
| CN108223054A (en) * | 2017-12-29 | 2018-06-29 | 重庆小康工业集团股份有限公司 | The Pcv system of internal combustion engine |
| CN108223051A (en) * | 2017-12-30 | 2018-06-29 | 重庆小康工业集团股份有限公司 | Automobile integrated form cylinder head cover |
| CN109113833A (en) * | 2018-09-26 | 2019-01-01 | 绵阳新晨动力机械有限公司 | A kind of two-chamber independence gs-oil separator |
| CN109113833B (en) * | 2018-09-26 | 2024-02-13 | 绵阳新晨动力机械有限公司 | Dual-cavity independent oil-gas separator |
| CN113606037A (en) * | 2021-08-30 | 2021-11-05 | 安徽江淮汽车集团股份有限公司 | Open cylinder cap cleaning system |
| CN113606037B (en) * | 2021-08-30 | 2022-07-05 | 安徽江淮汽车集团股份有限公司 | Open cylinder cap cleaning system |
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Address after: Hefei City, Anhui Province, 230022 East Road No. 176 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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Application publication date: 20131120 |
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