CN208885361U - Crankcase ventilation structure and engine - Google Patents

Crankcase ventilation structure and engine Download PDF

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Publication number
CN208885361U
CN208885361U CN201821360693.5U CN201821360693U CN208885361U CN 208885361 U CN208885361 U CN 208885361U CN 201821360693 U CN201821360693 U CN 201821360693U CN 208885361 U CN208885361 U CN 208885361U
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China
Prior art keywords
ventilation
air pipeline
pipeline
air
cylinder
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CN201821360693.5U
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Chinese (zh)
Inventor
孟庆宇
赵波
叶镇
周武明
刘�东
赵福成
王瑞平
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Aurora Bay Ningbo Intelligent Technology Co ltd
Aurobay Technology Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Ningbo Geely Royal Engine Components Co Ltd
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Abstract

The utility model provides a kind of crankcase ventilation structure, including air pipeline, valve mechanism cover, cylinder cap, cylinder and gs-oil separator, air pipeline is arranged inside valve mechanism cover, and including the first air pipeline and the second air pipeline, the inlet end of first air pipeline and the second air pipeline is connected with gs-oil separator, first air pipeline is set to valve mechanism cover, complete built-in closing pipe line is formed in cylinder cap and together with gs-oil separator, second air pipeline is integrated in inside valve mechanism cover, first air pipeline is connected with cylinder respectively with the outlet side of the second air pipeline.The utility model additionally provides a kind of engine.The crankcase ventilation structure of the utility model can effectively avoid the problem that vapor condensation freezes and blocks in air pipeline, provide good basis for engine reliable operation.

Description

Crankcase ventilation structure and engine
Technical field
The utility model relates to automobile technical field, especially a kind of crankcase ventilation structure and engine.
Background technique
When the engine is working, a part burnt in indoor high pressure mixed gas can be by between piston and cylinder Gas blowby is caused in clearance leakage to crankcase, therefore, engine all needs setting crankshaft ventilation tube road, this portion gas is exported Crankcase, and make it through inlet manifold and enter in cylinder and burn.
Currently, common engine crankshaft ventilation tube road is directly installed in ventilation Oil-gas Separation module, by being arranged in hair Rubber hose outside motivation is connected to after air throttle or is introduced directly into inlet manifold, and pipeline is longer and is exposed to cabin Outside, due to containing large quantity of moisture in the exhaust gas that is discharged in crankcase, cold district work vehicle when in air temperature compared with When the gas that low gas and crankcase is separated meets, the gas that crankcase is separated is because inlet manifold and air inlet are soft Tube wall and ambient temperature at pipe pipe fitting is lower, and the vapor in oil gas often will appear cold in crankshaft ventilation tube road The case where condensation ice, especially the operating condition of short distance Reusability but will cause air pipeline to block, keeps engine operation abnormal.
Utility model content
The purpose of the utility model is to provide a kind of crankcase ventilation structure and engines, can effectively avoid in air pipeline The problem of vapor condensation freezes and blocks provides good basis for engine reliable operation.
The utility model provides a kind of crankcase ventilation structure, including air pipeline, valve mechanism cover, cylinder cap, cylinder and Gs-oil separator, the air pipeline are arranged inside the valve mechanism cover, and including the first air pipeline and the second ventilation duct The inlet end of road, first air pipeline and second air pipeline is connected with the gs-oil separator, and described first Air pipeline forms complete built-in sealed tube in the valve mechanism cover, the cylinder cap and together with the gs-oil separator Road, second air pipeline are integrated in inside the valve mechanism cover, and first air pipeline and the second air pipeline go out Gas end is connected with cylinder respectively.
Further, the outlet side of first air pipeline is connected with the air intake duct of the cylinder, and described second is logical The outlet side of air pipe line is connected to the position between air cleaner and compressor.
Further, the outlet side of second air pipeline is equipped with pipe fitting, the pipe fitting connection and described second The hose that air pipeline is connected with the air cleaner.
Further, first air pipeline is arranged in a vertical direction, and second air pipeline is substantially along level side To arrangement.
Further, the outlet side of second air pipeline is located above the valve mechanism cover exhaust side, and described second Air pipeline is obliquely installed, and the outlet side of second air pipeline is made to be higher than inlet end.
Further, first air pipeline is fastenedly connected by bolt and the gs-oil separator.
The utility model also provides a kind of engine, including above-mentioned crankcase ventilation structure.
The crankcase ventilation structure of the utility model is avoided starting by being arranged air pipeline inside valve mechanism cover The moving air of machine cabin brushes, to realize that pipeline is rapidly heated, effectively prevents vapor condensation in air pipeline and freezes And the problem of blocking, good basis is provided for engine reliable operation.
Detailed description of the invention
Fig. 1 is crankcase ventilation structure schematic diagram provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the second air pipeline shown in FIG. 1.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined purpose is taken, below in conjunction with attached drawing And preferred embodiment, to according to the utility model proposes crankcase ventilation structure and the specific embodiment of engine, structure, Feature and its effect, detailed description is as follows.
As shown in Figure 1, the utility model provides a kind of crankcase ventilation structure, including air pipeline 1, valve mechanism cover 2, cylinder Lid 3, cylinder 4 and gs-oil separator 5, air pipeline 1 are arranged inside valve mechanism cover 2, and including the first air pipeline 11 and the The inlet end of two air pipelines 12, the first air pipeline 11 and the second air pipeline 12 is connected with gs-oil separator 5, and first is logical Air pipe line 11 forms complete built-in closing pipe line together in valve mechanism cover 2, cylinder cap 3 and with gs-oil separator 5, and second is logical Air pipe line 12 is integrated in inside valve mechanism cover 2, the outlet side of the first air pipeline 11 and the second air pipeline 12 respectively with cylinder 4 It is connected.In the present embodiment, the second air pipeline 12 is integrated in inside valve mechanism cover 2, is referred to and is directly opened up in valve mechanism cover 2 It slots and forms the second air pipeline 12.
In the present embodiment, in 2 air inlet side of valve mechanism cover, inlet end and 5 phase of gs-oil separator of the first air pipeline 11 Connection, the outlet side of the first air pipeline 11 is connected with the air intake duct of cylinder 4, and the first air pipeline 11 is along the vertical direction Arrangement.Cooperated according to engine operating condition difference and crankcase ventilation function is realized with different air pipelines 1, when engine operating condition is When low speed and load, the exhaust gas being discharged out of crankcase ventilation gas blowby pipeline 6, after the separation of gs-oil separator 5, in Oil-gas Separation It is directly entered first air pipeline 11 in 2 inner vertical direction of valve mechanism cover inside device 5, saves length of pipe, the row of improving Gas efficiency, prevent as pipeline is longer and it is exposed caused by low temperature icing phenomenon.By the first air pipeline 11 and cylinder 4 into Exhaust gas is discharged into cylinder 4 and burnt by air flue connection, avoids the pollution to inlet manifold (not shown).
On the top of valve mechanism cover 2, the second air pipeline 12 is formed by way of core pulling in die casting, the second ventilation duct The inlet end on road 12 is connected with gs-oil separator 5, and the outlet side of second air pipeline 12 is located on 2 exhaust side of valve mechanism cover Side, and the outlet side of the second air pipeline is connected to the position between air cleaner and compressor (not shown).Further The outlet side on ground, the second pipeline 12 is equipped with pipe fitting 121, the connection of pipe fitting 121 being pressed by interference and the second air pipeline 12 and air cleaner hose (not shown), the pipe fitting 121 above exhaust side is conducive to the heating of hose, to keep away Exempting from the icing of the second air pipeline 12 causes to block.When engine is sub-load and high load working condition, altered from crankcase ventilation The exhaust gas being discharged in air pipe 6 is directly entered in valve mechanism cover 2 after the separation of gs-oil separator 5 inside gs-oil separator 5 Second air pipeline 12 in portion, after the exhaust gas being separated mixes with air, through compressor pressure enter cylinder 4 carry out it is secondary Burning.As shown in Fig. 2, the second air pipeline 12 is arranged in the horizontal direction substantially, in conjunction with the practical Arrangement of Engine-room angle of engine, Two air pipelines are obliquely installed, and the outlet side of the second air pipeline 12 is made to be higher than inlet end, and the second air pipeline of adjustment 12 is slight It has a down dip, is affected by gravity towards gs-oil separator 5, to guarantee separating through gs-oil separator 5 for the second air pipeline 12 carrying Liquid machine oil out, which can take advantage of a situation, flows out the second air pipeline 12, flows back in oil sump through oil return line 7, machine oil is avoided to stockpile Influence 12 normal use of the second air pipeline.
Cooperated according to engine operating condition difference and crankcase ventilation function is realized with different air pipelines 1, realized more accurate Crankcase pressure regulatory function, to guarantee normal operation of the engine under different operating conditions.
In addition, first air pipeline 11 is fastenedly connected by bolt with gs-oil separator 5, it can be used for six method of applicant country Advise the immunity to ventilation sensor.
The utility model embodiment also provides a kind of engine (not shown), which includes the utility model embodiment The crankcase ventilation structure of offer.
The crankcase ventilation structure of the utility model is by being arranged air pipeline 1 inside valve mechanism cover 2, instead of exposed In the pipeline of external engine, the moving air for avoiding engine nacelle brushes, simultaneously because valve mechanism cover 2 is aluminium alloy material Matter is the good conductor characteristic of heat using aluminium alloy, and after engine operation or stopping, the residual temperature of valve mechanism cover 2 can be to entire Air pipeline 1 plays insulation effect, to realize that pipeline is rapidly heated, avoid well cold district winter ventilation pipeline 1 because The problem of vapor condensation freezes and air pipeline 1 is caused to block provides good basis for engine reliable operation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, any to be familiar with this profession Technical staff, it is without departing from the scope of the present invention, a little when being made using above-mentioned revealed technology contents Change or modification etc., any modification, equivalent replacement or improvement done within the spirit and principles of the present invention etc., should all wrap Containing within protection scope of the present invention.

Claims (7)

1.一种曲轴箱通风结构，包括通风管路(1)、气缸盖罩(2)、缸盖(3)、气缸(4)及油气分离器(5)，其特征在于，所述通风管路(1)设置在所述气缸盖罩(2)内部，并包括第一通风管路(11)和第二通风管路(12)，所述第一通风管路(11)和所述第二通风管路(12)的进气端与所述油气分离器(5)相连通，所述第一通风管路(11)设于所述气缸盖罩(2)、所述缸盖(3)内并与所述油气分离器(5)一起组成完整的内置封闭管路，所述第二通风管路(12)集成于所述气缸盖罩(2)内部，所述第一通风管路(11)与所述第二通风管路(12)的出气端分别与所述气缸(4)相连通。1. A crankcase ventilation structure, comprising a ventilation pipeline (1), a cylinder head cover (2), a cylinder head (3), a cylinder (4) and an oil-gas separator (5), characterized in that the ventilation pipe A road (1) is arranged inside the cylinder head cover (2), and includes a first ventilation line (11) and a second ventilation line (12), the first ventilation line (11) and the first ventilation line (11) and the second ventilation line (12). The intake end of the second ventilation pipeline (12) is communicated with the oil-gas separator (5), and the first ventilation pipeline (11) is provided on the cylinder head cover (2), the cylinder head (3) ) and together with the oil and gas separator (5) to form a complete built-in closed pipeline, the second ventilation pipeline (12) is integrated inside the cylinder head cover (2), the first ventilation pipeline (11) The air outlet ends of the second ventilation pipeline (12) are respectively communicated with the air cylinder (4). 2.如权利要求1所述的曲轴箱通风结构，其特征在于，所述第一通风管路(11)的出气端与所述气缸(4)的进气道相连通，所述第二通风管路(12)的出气端连接于空气滤清器和压气机之间的位置。2. The crankcase ventilation structure according to claim 1, characterized in that the outlet end of the first ventilation pipeline (11) is communicated with the air inlet of the cylinder (4), and the second ventilation The outlet end of the pipeline (12) is connected to the position between the air cleaner and the compressor. 3.如权利要求2所述的曲轴箱通风结构，其特征在于，所述第二通风管路(12)的出气端设有管接头(121)，所述管接头(121)连接与所述第二通风管路(12)和所述空气滤清器连接的软管。3. The crankcase ventilation structure according to claim 2, characterized in that, a pipe joint (121) is provided at the outlet end of the second ventilation pipeline (12), and the pipe joint (121) is connected to the The second ventilation line (12) is connected with the hose of the air cleaner. 4.如权利要求2所述的曲轴箱通风结构，其特征在于，所述第一通风管路(11)沿竖直方向布置，所述第二通风管路(12)基本沿水平方向布置。4. The crankcase ventilation structure according to claim 2, wherein the first ventilation pipeline (11) is arranged in a vertical direction, and the second ventilation pipeline (12) is arranged in a substantially horizontal direction. 5.如权利要求4所述的曲轴箱通风结构，其特征在于，所述第二通风管路(12)的出气端位于所述气缸盖罩(2)排气侧上方，所述第二通风管路(12)倾斜设置，使所述第二通风管路(12)的出气端高于进气端。5. The crankcase ventilation structure according to claim 4, characterized in that the outlet end of the second ventilation pipeline (12) is located above the exhaust side of the cylinder head cover (2), and the second ventilation line (12) is located above the exhaust side of the cylinder head cover (2). The pipeline (12) is arranged obliquely, so that the air outlet end of the second ventilation pipeline (12) is higher than the air intake end. 6.如权利要求1所述的曲轴箱通风结构，其特征在于，所述第一通风管路(11)通过螺栓与所述油气分离器(5)紧固连接。6 . The crankcase ventilation structure according to claim 1 , wherein the first ventilation pipeline ( 11 ) is fastened to the oil-gas separator ( 5 ) through bolts. 7 . 7.一种发动机，包括如权利要求1至6中任一项所述的曲轴箱通风结构。7. An engine comprising a crankcase ventilation structure as claimed in any one of claims 1 to 6.
CN201821360693.5U 2018-08-22 2018-08-22 Crankcase ventilation structure and engine Active CN208885361U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821360693.5U CN208885361U (en) 2018-08-22 2018-08-22 Crankcase ventilation structure and engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821360693.5U CN208885361U (en) 2018-08-22 2018-08-22 Crankcase ventilation structure and engine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111636949A (en) * 2020-06-17 2020-09-08 浙江吉利新能源商用车集团有限公司 Closed Crankcase Ventilation Systems for Heavy Duty Engine Systems and Heavy Duty Engine Systems
CN112282891A (en) * 2019-07-25 2021-01-29 长城汽车股份有限公司 Crankcase ventilation control method and crankcase ventilation system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112282891A (en) * 2019-07-25 2021-01-29 长城汽车股份有限公司 Crankcase ventilation control method and crankcase ventilation system
CN112282891B (en) * 2019-07-25 2022-02-22 长城汽车股份有限公司 Crankcase ventilation control method and crankcase ventilation system
CN111636949A (en) * 2020-06-17 2020-09-08 浙江吉利新能源商用车集团有限公司 Closed Crankcase Ventilation Systems for Heavy Duty Engine Systems and Heavy Duty Engine Systems
CN111636949B (en) * 2020-06-17 2021-08-13 浙江吉利新能源商用车集团有限公司 Closed Crankcase Ventilation Systems for Heavy Duty Engine Systems and Heavy Duty Engine Systems

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Address after: 315336 Binhai New Area, Hangzhou Bay, Zhejiang, No. two, No. 818 Road, No.

Patentee after: Aurora Bay (Ningbo) Intelligent Technology Co., Ltd.

Country or region after: China

Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd.

Address before: 315336 Binhai New Area, Hangzhou Bay, Zhejiang, No. two, No. 818 Road, No.

Patentee before: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd.

Country or region before: China

Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd.

TR01 Transfer of patent right
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Effective date of registration: 20260206

Address after: 315336 Binhai New Area, Hangzhou Bay, Zhejiang, No. two, No. 818 Road, No.

Patentee after: Aurora Bay (Ningbo) Intelligent Technology Co.,Ltd.

Country or region after: China

Patentee after: Aurobay Technology Co.,Ltd.

Address before: 315336 Binhai New Area, Hangzhou Bay, Zhejiang, No. two, No. 818 Road, No.

Patentee before: Aurora Bay (Ningbo) Intelligent Technology Co.,Ltd.

Country or region before: China

Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd.