CN203257558U - Supercharged engine air cylinder head cover of integrated crankcase ventilation system - Google Patents
Supercharged engine air cylinder head cover of integrated crankcase ventilation system Download PDFInfo
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- CN203257558U CN203257558U CN 201320227106 CN201320227106U CN203257558U CN 203257558 U CN203257558 U CN 203257558U CN 201320227106 CN201320227106 CN 201320227106 CN 201320227106 U CN201320227106 U CN 201320227106U CN 203257558 U CN203257558 U CN 203257558U
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Abstract
The utility model discloses a supercharged engine air cylinder head cover of an integrated crankcase ventilation system. The supercharged engine air cylinder head cover of the integrated crankcase ventilation system is used for improving oil-gas separation efficiency of a supercharged engine crankcase ventilation system and avoiding negative effects caused by increase of the number of engine external accessories. The supercharged engine air cylinder head cover of the integrated crankcase ventilation system is provided with a middle and high load oil-gas separation cavity and a low load oil-gas separation cavity, an air inlet end of the middle and high oil-gas separation cavity is communicated with an independent air-taking cavity in the air cylinder head cover, a V-groove grid plate type oil-gas separator and an air cylinder head cover plate are arranged in the middle and high load oil-gas separation cavity, the V-groove grid plate type oil-gas separator is arranged above the air cylinder head cover plate, and an independent oil returning cavity is arranged on the air cylinder head cover plate. The supercharged engine air cylinder head cover of the integrated crankcase ventilation system has the advantages that structure is compact, convenience is brought to arrangement of a whole engine, oil-gas separation efficiency of gas leakage in an engine crankcase is improved, the service life of engine oil is prolonged, abrasion and corrosion of machine parts are reduced, discharging of pollutants is reduced, and the economical performance of the engine is improved.
Description
Technical field
The utility model relates to a kind of cylinder cover for automobile engine, and especially a kind of supercharged engine valve mechanism cover of medley ventilation system for shaft box belongs to technical field of internal combustion engines.
Background technique
Along with motor in-cylinder direct injection, multi-stage booster, VVT/L(Variable Valve Time/lift) etc. the appearance of new technology, the power performance of motor constantly strengthens, the problem of also having brought engine piston air loss (being gas blowby) significantly to improve simultaneously.Inflammable mixture and waste gas have accelerated the corrosion of deterioration of lubricant and parts in piston ring leaks into crankcase, increased simultaneously the discharge amount of the harmful substances such as CH.The major function of Modern Automobile Engine crankcase ventilation system is that inflammable mixture and waste gas are extracted out in crankcase, and gas blowby in the engine crankcase carried out Oil-gas Separation, to reach the abrasion and corrosion that prolongs the machine oil life time, reduces parts, the purpose that reduces pollutant emission, raising motor economic performance, therefore, the reliability of Modern Automobile Engine crankcase ventilation system is particularly important, and multiple crankcase ventilation system with the engine performance coupling arranges and structural type arises at the historic moment.
At present, the crankcase ventilation system of supercharged engine is got gas by plug-in pipeline mostly, adopt the external oil-gas separator oil return apparatus, this oil return apparatus complex manufacturing technology needs integrated a plurality of three-way valve could realize high and low load condition Oil-gas Separation switching, and arranges many external pipelines, motor outer attachment quantity is increased, not only affect the complete machine productive temp, and be unfavorable for the improvement of complete machine NVH performance, also increased the difficulty of arrangement.The crankcase ventilation system of naturally aspirated engine adopts the cylinder head top to get gas, it arranges spill port and labyrinth, diaphragm type deaerator in valve mechanism cover, separate large molecule machine oil particle by the gas blowby impingement baffles, this crankcase ventilation system is conducive to the motor complete machine and arranges, but its oil-gas separation efficiency is lower, can not satisfy the requirement of supercharged engine crankcase ventilation system.This shows, for guaranteeing supercharged engine crankcase ventilation system oil-gas separation efficiency, the negative effect of avoiding simultaneously motor outer attachment quantity to increase, ingenious layout deaerator and get gas and oil-returning structure is the preferred version that addresses the above problem on engine air cylinder cap.
The model utility content
The purpose of this utility model is the drawback for prior art, a kind of compact structure is provided, is beneficial to the supercharged engine valve mechanism cover that the motor complete machine was arranged, can be improved engine crankcase gas blowby oil-gas separation efficiency, prolongation machine oil life time, reduces the medley ventilation system for shaft box of component wear and burn into reduction pollutant emission.
Problem described in the utility model realizes with following technical proposals:
A kind of supercharged engine valve mechanism cover of medley ventilation system for shaft box, it is provided with middle and high load oil-gas separation chamber and low-load oil-gas separation chamber, described middle and high load oil-gas separation chamber inlet end is communicated with the air cavity of independently getting on being arranged on valve mechanism cover, in middle and high load oil-gas separation chamber, be provided with V groove grated plate type deaerator and valve mechanism cover cover plate, described V groove grated plate type deaerator is installed in valve mechanism cover cover plate top, and described valve mechanism cover cover plate is provided with the independent oil return chamber.
The supercharged engine valve mechanism cover of above-mentioned medley ventilation system for shaft box is describedly independently got air cavity and engine body is independently got the gas channel connection, described independent oil return chamber and engine body independent oil return channel connection.
The supercharged engine valve mechanism cover of above-mentioned medley ventilation system for shaft box, V groove grated plate type deaerator quantity in the described middle and high load oil-gas separation chamber is no less than three groups, be provided with middle and high load spill port and baffle plate being positioned at first group of valve mechanism cover cover plate below the V groove grated plate type deaerator, described middle and high load spill port is communicated with drainback passage in the engine body, two-part before and after described baffle plate is divided into first group of V groove grated plate type deaerator.
The supercharged engine valve mechanism cover of above-mentioned medley ventilation system for shaft box also is provided with the crankcase ventilation mouth on the described middle and high load oil-gas separation chamber, and described crankcase ventilation mouth is communicated with the air filter of engine rear end.
The supercharged engine valve mechanism cover of above-mentioned medley ventilation system for shaft box, described low-load oil-gas separation chamber is provided with one group of V groove grated plate type deaerator, low-load oil-gas separation chamber air hatch, low-load spill port and positive crankcase ventilation (PCV) mouth, described low-load oil-gas separation chamber air hatch is arranged in engine cylinder and covers, described low-load spill port is communicated with drainback passage in the engine body, and described positive crankcase ventilation (PCV) mouth is communicated with engine intake manifold.
The supercharged engine valve mechanism cover of above-mentioned medley ventilation system for shaft box, it also is provided with the integrated sealing circle, and described integrated sealing circle is with valve mechanism cover seal ring, independent oil return chamber seal ring and independently get the air cavity seal ring formula structure that becomes one.
The passage that the utility model and engine cylinder-body, cylinder cap, camshaft bearing cover casting has formed the crankcase ventilation system of complete middle and high load, it is provided with middle and high load oil-gas separation chamber and low-load oil-gas separation chamber, at least three group V groove grated plate type deaerators are set in middle and high load oil-gas separation chamber, after the assembling of valve mechanism cover cover plate, utilize baffle arrangement to change the gas blowby route, make gas blowby through at least three effective separations; The utility model adopts and independently gets air cavity and independent oil return cavity configuration not affecting in the situation that the motor outer attachment arranges, effectively improved the highly oil return that causes of deficiency and spill port gas blowby smooth problem of oil return; The utility model adopts valve mechanism cover seal ring and independent oil return chamber seal ring integral structure, and self error-disable function when both having increased installation has reduced again the quantity of seal ring.In a word, the utlity model has compact structure, be beneficial to the characteristics that the motor complete machine is arranged, can not only improve oil-gas separation efficiency, prolongation machine oil life time, minimizing component wear and the corrosion of gas blowby in the engine crankcase, and reduced the discharging of pollutant, improved the economic performance of motor.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is that the utility model and engine assembly concern schematic representation;
Fig. 2 is the utility model structural representation;
Fig. 3 is the worm's eye view of Fig. 2;
Fig. 4 is the utility model internal structure schematic representation;
Fig. 5 is middle and high load oil-gas separation chamber cross-sectional view;
Fig. 6 is integrated sealing circle schematic representation.
Each list of reference numerals is among the figure: 1, engine body is independently got the gas passage, 2, engine body independent oil return passage, 3, valve mechanism cover, 4, the valve mechanism cover cover plate, 5, in, the high load oil-gas separation chamber, 6, the low-load oil-gas separation chamber, 7, low-load oil-gas separation chamber air hatch, 8, the low-load spill port, 9, the crankcase ventilation mouth, 10, the positive crankcase ventilation (PCV) mouth, 11, independently get air cavity, 12, in, the high load spill port, 13, baffle plate, 14, the independent oil return chamber, 15, V groove grated plate type deaerator, 16, the integrated sealing circle, 16-1, the valve mechanism cover seal ring, 16-2, independent oil return chamber seal ring, 16-3, independently get the air cavity seal ring.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model is the valve mechanism cover 3 that a kind of and safe and reliable crankcase ventilation system mates, during it is provided with, high load oil-gas separation chamber 5 and low-load oil-gas separation chamber 6, in described, be provided with V groove grated plate type deaerator 15 and valve mechanism cover cover plate 4 in the high load oil-gas separation chamber 5, described V groove grated plate type deaerator 15 is installed in valve mechanism cover cover plate 4 tops, described valve mechanism cover cover plate 4 is provided with and independently gets air cavity 11 and independent oil return chamber 14, the described air cavity 11 of independently getting is independently got gas passage 1 with engine body and is communicated with, and described independent oil return chamber 14 is communicated with engine body independent oil return passage 2.
Referring to Fig. 4, Fig. 5, V groove grated plate type deaerator 15 quantity in the middle and high load oil-gas separation chamber 5 of the present utility model are no less than three groups, be provided with middle and high load spill port 12 and baffle plate 13 being positioned at first group of valve mechanism cover cover plate below the V groove grated plate type deaerator, described middle and high load spill port 12 is communicated with drainback passage in the engine body, two-part before and after described baffle plate 13 is divided into first group of V groove grated plate type deaerator; Also be provided with crankcase ventilation mouth 9 on middle and high load oil-gas separation chamber 5, described crankcase ventilation mouth 9 is communicated with the air filter of engine rear end.
Referring to Fig. 3, Fig. 4, low-load oil-gas separation chamber 6 of the present utility model is provided with low-load oil-gas separation chamber air hatch 7, one group of V groove grated plate type deaerator 15, low-load spill port 8 and positive crankcase ventilation (PCV) mouth 10, described low-load oil-gas separation chamber air hatch 7 is communicated with crankcase, described low-load spill port 8 is communicated with drainback passage in the engine body, and described positive crankcase ventilation (PCV) mouth 10 is communicated with engine intake manifold.
Referring to Fig. 3, Fig. 4, Fig. 6, the utility model also is provided with integrated sealing circle 16, and described integrated sealing circle 16 is with valve mechanism cover seal ring 16-1, independent oil return chamber seal ring 16-2 and independently get the air cavity seal ring 16-3 formula structure that becomes one.
Referring to Fig. 1～Fig. 6, gas passage 1 independently got by engine body and engine body independent oil return passage 2 connects whole engine interior, forms complete middle and high load crankcase ventilation system with valve mechanism cover 3; Valve mechanism cover 3 is main bodys of Oil-gas Separation, the crankcase ventilation mouth 9 that end face arranges outside it and positive crankcase ventilation (PCV) mouth 10 export as the gas blowby of middle and high load oil-gas separation chamber 5 and low-load oil-gas separation chamber 6 respectively, its inner valve mechanism cover cover plate that arranges 4 adopts the vibration friction welding to be connected with the valve mechanism cover body, arrange independent oil return chamber 14 and middle and high load spill port 12 at valve mechanism cover cover plate 4, they are the minimum point after the valve mechanism cover assembling, and avoided the gas blowby exit position, prevented that gas blowby from taking away separated machine oil particle; Present embodiment according to 5.5 ° of motor hypsokinesis, to the exhaust side inclination angle 20 ° the gradient of characteristics designs valve mechanism cover cover plate 4, be convenient to smooth oil return; The very little oil droplet of diameter in the V groove grated plate type deaerator 15 separable gas blowbies of the present utility model, this deaerator separation effect is high, and the pressure loss is little, can realize the effective separation to gas blowby; Integrated sealing circle 16 in the utility model structure not only is used for valve mechanism cover 3 and camshaft bearing lid junction plane are sealed, and realized independently getting the sealing of gas, oil back chamber by integrated sealing circle 16, further improved the reliability of crankcase ventilation.
Under the middle and high load condition of motor, pressurized machine work, gas blowby carries out Oil-gas Separation in middle and high load oil-gas separation chamber 5; In independently getting air cavity 11 and being, the import of high load operating mode lower crankcase gas blowby, gas blowby is by the cylinder body crude separation, in this entrance enters, in the high load oil-gas separation chamber 5, in the present embodiment, high load oil-gas separation chamber 5 built-in three groups of V groove grated plate type deaerators 15, as in, the gas and oil separating plant of high load operating mode, baffle plate 13 on the valve mechanism cover cover plate 4 separates first group of deaerator, up the finishing for the first time of gas blowby separated, isolated machine oil along in, high load spill port 12 flow to oil sump by drainback passage in the engine body, gas blowby is descending finish separate for the second time after, finish last separation through the 3rd group of deaerator is up again, then enter the air filter rear end by crankcase ventilation mouth 9, isolated machine oil flows to independent oil return chamber 14 along valve mechanism cover cover plate 4, flows back to oil sump by engine body independent oil return passage 2 again.
Under the engine low load operating mode, pressurized machine is not worked, gas blowby enters 6, one groups of V grooves of low-load oil-gas separation chamber grated plate type deaerator, 15 gas and oil separating plants as the low-load oil-gas separation chamber by low-load oil-gas separation chamber air hatch 7, and the machine oil that carries in the gas blowby is separated; The machine oil that is separated is got back to oil sump by low-load spill port 8, gas blowby directly imports in the intake manifold by positive crankcase ventilation (PCV) mouth 10, fresh air in the air filter enters in the crankcase by crankcase ventilation mouth 9 and realizes the low-load tonifying Qi, makes crankcase pressure remain on 1 to-5kPa scope.
Claims (6)
1. the supercharged engine valve mechanism cover of a medley ventilation system for shaft box, it is characterized in that, during it is provided with, high load oil-gas separation chamber (5) and low-load oil-gas separation chamber (6), in described, high load oil-gas separation chamber (5) inlet end is communicated with the air cavity (11) of independently getting on being arranged on valve mechanism cover, in, be provided with V groove grated plate type deaerator (15) and valve mechanism cover cover plate (4) in the high load oil-gas separation chamber, described V groove grated plate type deaerator (15) is installed in valve mechanism cover cover plate (4) top, and described valve mechanism cover cover plate (4) is provided with independent oil return chamber (14).
2. the supercharged engine valve mechanism cover of a kind of medley ventilation system for shaft box according to claim 1, it is characterized in that, the described air cavity (11) of independently getting is independently got gas passage (1) with engine body and is communicated with, and described independent oil return chamber (14) is communicated with engine body independent oil return passage (2).
3. the supercharged engine valve mechanism cover of a kind of medley ventilation system for shaft box according to claim 2, it is characterized in that, in described, V groove grated plate type deaerator (15) quantity in the high load oil-gas separation chamber (5) is no less than three groups, be provided with being arranged in first group of valve mechanism cover cover plate below the V groove grated plate type deaerator, high load spill port (12) and baffle plate (13), in described, high load spill port (12) is communicated with drainback passage in the engine body, two-part before and after described baffle plate (13) is divided into first group of V groove grated plate type deaerator.
4. the supercharged engine valve mechanism cover of a kind of medley ventilation system for shaft box according to claim 3, it is characterized in that, also be provided with crankcase ventilation mouth (9) on the described middle and high load oil-gas separation chamber (5), described crankcase ventilation mouth (9) is communicated with the air filter of engine rear end.
5. the supercharged engine valve mechanism cover of a kind of medley ventilation system for shaft box according to claim 4, it is characterized in that, described low-load oil-gas separation chamber (6) is provided with low-load oil-gas separation chamber air hatch (7), one group of V groove grated plate type deaerator (15), low-load spill port (8) and positive crankcase ventilation (PCV) mouth (10), described low-load oil-gas separation chamber air hatch (7) is communicated with crankcase, described low-load spill port (8) is communicated with drainback passage in the engine body, and described positive crankcase ventilation (PCV) mouth (10) is communicated with engine intake manifold.
6. according to claim 1 and 2 or the supercharged engine valve mechanism cover of 3 or 4 or 5 described a kind of medley ventilation system for shaft boxes, it is characterized in that, it also is provided with integrated sealing circle (16), and described integrated sealing circle (16) is with valve mechanism cover seal ring (16-1), independent oil return chamber seal ring (16-2) and independently get air cavity (16-3) the formula structure that becomes one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320227106 CN203257558U (en) | 2013-04-28 | 2013-04-28 | Supercharged engine air cylinder head cover of integrated crankcase ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320227106 CN203257558U (en) | 2013-04-28 | 2013-04-28 | Supercharged engine air cylinder head cover of integrated crankcase ventilation system |
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| Publication Number | Publication Date |
|---|---|
| CN203257558U true CN203257558U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320227106 Expired - Lifetime CN203257558U (en) | 2013-04-28 | 2013-04-28 | Supercharged engine air cylinder head cover of integrated crankcase ventilation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948262A (en) * | 2015-07-16 | 2015-09-30 | 金春夫 | Oil-gas separator |
| CN105089741A (en) * | 2014-04-18 | 2015-11-25 | 比亚迪股份有限公司 | Engine and cylinder head cover assembly thereof |
| CN105275540A (en) * | 2015-11-18 | 2016-01-27 | 金春夫 | Oil-gas separator |
| CN106246289A (en) * | 2015-06-04 | 2016-12-21 | 福特环球技术公司 | Internal pressurization air feed from the rocker cover being integrated into flow channel |
| CN113236395A (en) * | 2021-05-19 | 2021-08-10 | 重庆长安汽车股份有限公司 | Actuator mounting structure of variable valve lift system |
-
2013
- 2013-04-28 CN CN 201320227106 patent/CN203257558U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089741A (en) * | 2014-04-18 | 2015-11-25 | 比亚迪股份有限公司 | Engine and cylinder head cover assembly thereof |
| CN106246289A (en) * | 2015-06-04 | 2016-12-21 | 福特环球技术公司 | Internal pressurization air feed from the rocker cover being integrated into flow channel |
| CN106246289B (en) * | 2015-06-04 | 2020-04-14 | 福特环球技术公司 | High-pressure charge air feeding device of internal combustion engine and engine system |
| CN104948262A (en) * | 2015-07-16 | 2015-09-30 | 金春夫 | Oil-gas separator |
| CN105275540A (en) * | 2015-11-18 | 2016-01-27 | 金春夫 | Oil-gas separator |
| CN113236395A (en) * | 2021-05-19 | 2021-08-10 | 重庆长安汽车股份有限公司 | Actuator mounting structure of variable valve lift system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |