CN101270683A - Gas oil separation structure of internal combustion engine crankcase ventilation system - Google Patents
Gas oil separation structure of internal combustion engine crankcase ventilation system Download PDFInfo
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- CN101270683A CN101270683A CNA2007100929200A CN200710092920A CN101270683A CN 101270683 A CN101270683 A CN 101270683A CN A2007100929200 A CNA2007100929200 A CN A2007100929200A CN 200710092920 A CN200710092920 A CN 200710092920A CN 101270683 A CN101270683 A CN 101270683A
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Abstract
The invention relates to gas-oil dissociation structure of a ventilating system of an internal-combustion engine crankcase, comprising a cylinder head, a camshaft cover and a camshaft. One end of the camshaft extends and outstretches the cylinder head that is covered by an end cap. The end cap and the cylinder head are fixed to form an impact dissociation chamber with the cylinder head and the camshaft. The bottom of the end cap is provided with an impact slot. The upper and the lower sides of the end cap are provided with a gas vent and an oil-returning opening. The gas vent upwards goes through an air channel and enters a PCV valve. The oil-returning opening downwards goes through an oil-returning pipe and is connected with the engine oil chamber of the crankcase. The structure of the camshaft is hollow with a rotary dissociation chamber formed in middle. The end of the rotary dissociation chamber facing one end of the end cap is an air outlet and the other end of the rotary dissociation chamber is an air inlet. A plurality of pores are distributed among the middle part of the camshaft that are communicated with the rotary dissociation chamber and a valve chamber. The gas-oil dissociation structure leads the inter-combustion engine to higher efficiency of gas-oil dissociation. On the premise that the pressure of the crankcase is ensured to be in line with state rules, the consumption of lubricant is lower.
Description
Technical field
The present invention is a kind of crankcase ventilation structure of internal-combustion engine, relates to the lubrication system of internal-combustion engine.
Background technique
When internal combustion engine, because the gap of casing wall, piston and piston ring, cause a part of mixed gas, contain fuel oil, machine oil, water vapour and other condensation products and enter crankcase, because environmental regulation requires crankcase pressure should be lower than atmospheric pressure, so generally adopt the intake manifold assurance negative pressure of bleeding, but also can cause the consumption of I. C. engine oil to increase.
In prior art, general ventilation and separation structure are arranged in the valve mechanism cover, separate more in the small-sized Oil-gas Separation chambeies of adopting, this passive separation structure separation effect is not high, very low for little oil droplet separation effect less than 3um, and need to increase ventilation cover plate, bolt and separation rib, and cause the valve mechanism cover complex structure, can not satisfy the motor lightweight requirements.
Summary of the invention
The object of the invention provides a kind of simple in structure, gas oil separation structure of internal combustion engine crankcase ventilation system efficiently, solve crankcase owing to the big problem of consumption of lubricating oil of ventilating and bringing, make internal-combustion engine obtain higher Oil-gas Separation efficient, when guaranteeing that crankcase pressure meets national legislation, obtain lower lubricating oil consumption.
Technological scheme of the present invention is as follows:
A kind of gas oil separation structure of crankcase ventilation system comprises valve mechanism cover, camshaft cover, end cap and camshaft.Wherein, the one end prolongation of camshaft stretches out in outside the valve mechanism cover, cover by end cap, end cap and valve mechanism cover are fixed, surround one with valve mechanism cover and camshaft cover and impact the separation chamber, the punching groove that has rotation to be symmetrically distributed at the bottom of the lid of end cap has ventilating hole and return opening up and down, upwards enter the PCV valve, connect the oil pan of crankcase downwards by oil returning tube by venting channels.Camshaft is a hollow structure, in be formed centrally the rotation separation chamber, rotation separation chamber subtend end cap one end is the air outlet, the logical separation chamber that impacts, the other end is a suction port, communicates with the venting cavity of internal-combustion engine, some apertures are arranged in the middle of the camshaft, be communicated with rotation separation chamber and valve cage.
The present invention has made full use of the structure of internal-combustion engine self, by camshaft is carried out structure of modification, and increase an end cap, just obtain a rotation separation and impacted separation structure, mixed oil and gas is carried out fully effectively separating, make internal-combustion engine obtain higher Oil-gas Separation efficient, the lubricating oil consumption of reduction.Compact structure of the present invention, it is simple and reliable to work, and it is few to increase part.
Structure of the present invention is through the crankcase ventilation experiment, and is respond well, and machine oil ejection phenomenon does not take place, and the above oil droplet separation effect of diameter 10um is higher than 95%, and 3um-10um oil droplet separation effect is higher than 60%, can reach designing requirement fully.
Description of drawings
Fig. 1 is the ventilation system circuti diagram of crank case of internal combustion engine
Fig. 2 is the gas oil separation structure figure of this internal combustion engine crankcase ventilation system
Fig. 3 is the sectional drawing of the gas oil separation structure of this internal combustion engine crankcase ventilation system
Fig. 4 is the plane structure chart of end cap.
Embodiment
Referring to Fig. 1, common body of the internal-combustion engine structure is made up of crankcase 3, bent axle 5, connecting rod 6, piston 7 camshafts 10, distribution device element 9, cylinder head 8 and valve mechanism cover 12, oil pan 1, sump strainer 2, PCV valve 25 etc.Wherein, oil pan 1 and machine oil refecting cover 4 are formed machine oil chamber 20, and the gas channel 19 that passes through the machine oil refecting cover is arranged.Form crankshaft room 18 by crankcase 3, bent axle 5, connecting rod 6, piston 7, the big venting cavity 17 of young end opening on crankcase 3 edges have.In cylinder head 8 venting cavity 15 is arranged also equally,, form valve cage 14 by distribution device element 9, valve mechanism cover 12, filler cap 13 on cylinder head 8 tops.
In conjunction with Fig. 2 and Fig. 3 as seen, this crankcase ventilation structure is arranged on valve mechanism cover 12, on camshaft cover 11 and the camshaft, one end of camshaft is extended and stretches out in outside the valve mechanism cover 12, cover by an end cap 23, end cap 23 is fixing with valve mechanism cover 12, surround one with valve mechanism cover 12 and camshaft cover 11 and impact separation chamber 26, referring to Fig. 4, the punching groove 28 that has rotation to be symmetrically distributed at the bottom of the lid of end cap 23, end cap 23 have ventilating hole and return opening up and down, ventilating hole upwards enters PCV valve 25 by venting channels 24, and return opening connects the machine oil chamber 20 of crankcase downwards by oil returning tube 16.Camshaft 10 is designed to hollow structure, in be formed centrally rotation separation chamber 29, rotation separation chamber 29 subtend end caps, 23 1 ends are the air outlet, the other end is a suction port, there are some apertures 30 that communicate with valve cage 14 centre.
Referring to the oil gas moving line among Fig. 1, when internal combustion engine operation, piston 7 to-and-fro motion drive bent axles 5 rotations by connecting rod 6. and from crankcase 3 casing walls, the bleed mixed gas of part high temperature of piston 7 and the gap of piston ring enters crankshaft room 18; Machine oil refecting cover 4 prevents that high-temperature gas mixture machine oil direct and in the oil pan 1 from contacting, and prevents too much machine oil evaporation, produces a part of machine oil evaporant but also return in the machine oil chamber 20, and they enter crankshaft room 18 by a gas channel 19 on the machine oil refecting cover 4; Two-part gas enters venting cavity 17 after mixing, after enter valve cage 14 through venting cavity 15, because valve cage 14 does not have other passage, be mixed into the camshaft 10 of hollow, enter rotation disengagement chamber 29, because the turning effort of camshaft 10, the oil droplet that air is heavy slightly is to the camshaft radial motion relatively, get rid of into valve cage 14 by the some apertures 30 on the rotation disengagement chamber 29, get back to machine oil chamber 20 through the drainback passage of internal combustion engines; Mixed gas enters after by camshaft 10 and impacts separation chamber 26, oil droplet in the mixed gas impacts on the punching groove 28 on the end cap 23, because end cap 23 is in the internal-combustion engine end, temperature is lower, help oil droplet cohesion and the return opening 27 by the bottom enters drainback passage 16, after enter the machine oil liquid level of machine oil chamber 20 below 21; Mixed gas is after overbump is separated, and light slightly air is walked around punching groove 28 and entered breather line 24, enters combustion chambers burn through PCV valve 25 backs by pipeline 22.
Claims (2)
1. the gas oil separation structure of an internal combustion engine crankcase ventilation system, comprise valve mechanism cover, camshaft cover and camshaft, it is characterized in that: an end of camshaft prolongs and stretches out in outside the valve mechanism cover, cover by an end cap, end cap and valve mechanism cover are fixed, surround one with valve mechanism cover and camshaft cover and impact the separation chamber, be distributed with punching groove at the bottom of the lid of end cap, end cap have ventilating hole and return opening up and down, ventilating hole upwards enters the PCV valve by venting channels, and return opening connects the machine oil chamber of crankcase downwards by oil returning tube; Camshaft is a hollow structure, in be formed centrally the rotation separation chamber, rotation separation chamber subtend end cap one end is the air outlet, the other end is a suction port, the camshaft intermediate section is furnished with some apertures, is communicated with rotation separation chamber and valve cage.
2. the gas oil separation structure of internal combustion engine crankcase ventilation system according to claim 1 is characterized in that: the punching groove of end cap is symmetrically distributed at the lid bottom perimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100929200A CN101270683A (en) | 2007-10-30 | 2007-10-30 | Gas oil separation structure of internal combustion engine crankcase ventilation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100929200A CN101270683A (en) | 2007-10-30 | 2007-10-30 | Gas oil separation structure of internal combustion engine crankcase ventilation system |
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|---|---|
| CN101270683A true CN101270683A (en) | 2008-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100929200A Pending CN101270683A (en) | 2007-10-30 | 2007-10-30 | Gas oil separation structure of internal combustion engine crankcase ventilation system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865006A (en) * | 2010-05-19 | 2010-10-20 | 北汽福田汽车股份有限公司 | Engine liquid-gas separation device, engine and automobile |
| CN101886585A (en) * | 2010-06-24 | 2010-11-17 | 重庆长安汽车股份有限公司 | Connecting structure of engine camshaft cover and cylinder cover |
| CN102434250A (en) * | 2011-11-23 | 2012-05-02 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| CN102782265A (en) * | 2010-03-02 | 2012-11-14 | 戴姆勒股份公司 | Internal combustion engine |
| CN103061850A (en) * | 2012-12-26 | 2013-04-24 | 重庆长安汽车股份有限公司 | Crankcase ventilation oil returning structure |
| CN103362595A (en) * | 2013-07-04 | 2013-10-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Cam shaft component with function of oil-gas separation |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN104863666A (en) * | 2014-07-10 | 2015-08-26 | 北汽福田汽车股份有限公司 | Oil and gas separation channel structure of crank case as well as crank case assembly comprising structure |
| CN103422941B (en) * | 2012-05-17 | 2016-01-27 | 通用汽车环球科技运作有限责任公司 | PCV system |
| CN105927310A (en) * | 2016-04-21 | 2016-09-07 | 湖北三江船艇科技有限公司 | Engine double-pump lubricating system |
| CN106224057A (en) * | 2016-10-08 | 2016-12-14 | 湖南大学 | A kind of rebreather of engine system |
| EP3033499B1 (en) | 2013-08-13 | 2017-05-10 | Thyssenkrupp Presta Teccenter Ag | Camshaft assembly and camshaft arrangement |
| CN107489485A (en) * | 2016-08-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Oil-gas separating device of engine and there is its engine |
| CN115419481A (en) * | 2022-07-29 | 2022-12-02 | 东风柳州汽车有限公司 | Crankcase ventilation system air supplement unit |
-
2007
- 2007-10-30 CN CNA2007100929200A patent/CN101270683A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782265A (en) * | 2010-03-02 | 2012-11-14 | 戴姆勒股份公司 | Internal combustion engine |
| CN101865006B (en) * | 2010-05-19 | 2012-05-02 | 北汽福田汽车股份有限公司 | Engine liquid-gas separation device |
| CN101865006A (en) * | 2010-05-19 | 2010-10-20 | 北汽福田汽车股份有限公司 | Engine liquid-gas separation device, engine and automobile |
| CN101886585A (en) * | 2010-06-24 | 2010-11-17 | 重庆长安汽车股份有限公司 | Connecting structure of engine camshaft cover and cylinder cover |
| CN102434250A (en) * | 2011-11-23 | 2012-05-02 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| CN102434250B (en) * | 2011-11-23 | 2013-11-20 | 奇瑞汽车股份有限公司 | Gas-oil separation structure with crankcase for ventilation and operation method thereof |
| CN103422941B (en) * | 2012-05-17 | 2016-01-27 | 通用汽车环球科技运作有限责任公司 | PCV system |
| CN103061850A (en) * | 2012-12-26 | 2013-04-24 | 重庆长安汽车股份有限公司 | Crankcase ventilation oil returning structure |
| CN103362595A (en) * | 2013-07-04 | 2013-10-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Cam shaft component with function of oil-gas separation |
| CN103362595B (en) * | 2013-07-04 | 2016-08-10 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of cam assembly having Oil-gas Separation function |
| EP3033499B1 (en) | 2013-08-13 | 2017-05-10 | Thyssenkrupp Presta Teccenter Ag | Camshaft assembly and camshaft arrangement |
| CN103790663B (en) * | 2013-12-31 | 2017-01-25 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| CN103790663A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Integrated camshaft |
| WO2016004750A1 (en) * | 2014-07-10 | 2016-01-14 | 北汽福田汽车股份有限公司 | Oil-gas separation channel structure for crankcase, and crankcase assembly provided with same |
| CN104863666A (en) * | 2014-07-10 | 2015-08-26 | 北汽福田汽车股份有限公司 | Oil and gas separation channel structure of crank case as well as crank case assembly comprising structure |
| CN104863666B (en) * | 2014-07-10 | 2017-08-04 | 北汽福田汽车股份有限公司 | A kind of crankcase Oil-gas Separation channel design and the crankcase assembly with it |
| DE112015003205B4 (en) | 2014-07-10 | 2022-10-06 | Beiqi Foton Motor Co., Ltd. | Crankcase oil separation duct structure and crankcase assembly with the same |
| CN105927310A (en) * | 2016-04-21 | 2016-09-07 | 湖北三江船艇科技有限公司 | Engine double-pump lubricating system |
| CN107489485A (en) * | 2016-08-22 | 2017-12-19 | 宝沃汽车（中国）有限公司 | Oil-gas separating device of engine and there is its engine |
| CN106224057A (en) * | 2016-10-08 | 2016-12-14 | 湖南大学 | A kind of rebreather of engine system |
| CN115419481A (en) * | 2022-07-29 | 2022-12-02 | 东风柳州汽车有限公司 | Crankcase ventilation system air supplement unit |
| CN115419481B (en) * | 2022-07-29 | 2023-07-25 | 东风柳州汽车有限公司 | Air supplementing device of crankcase ventilation system |
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Open date: 20080924 |