EP1686245A2 - Blowby gas passage construction - Google Patents
Blowby gas passage construction Download PDFInfo
- Publication number
- EP1686245A2 EP1686245A2 EP06250260A EP06250260A EP1686245A2 EP 1686245 A2 EP1686245 A2 EP 1686245A2 EP 06250260 A EP06250260 A EP 06250260A EP 06250260 A EP06250260 A EP 06250260A EP 1686245 A2 EP1686245 A2 EP 1686245A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blowby gas
- cylinder head
- head cover
- discharge port
- port
- 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.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/0011—Breather valves
Definitions
- the present invention relates to the construction of a blowby gas passage in an internal combustion engine.
- a positive crankcase ventilation (PCV) valve which is provided in the outlet of an oil separator on a cylinder head cover, and an intake manifold are connected by a hose composing a blowby gas passage, wherein blowby gas is circulated through the hose located outside the engine.
- PCV positive crankcase ventilation
- a hose composing the blowby gas passage is plumbed outside the engine, so that in a very low temperature area such as a cold district there is a drawback that the blowby gas is cooled down inside the hose, and the moisture in the blowby gas is frozen to block the blowby gas passage.
- a blowby gas passage is extending to intake ports 6, 6 of a cylinder head 5, a part of the passage being included within a cylinder head cover 1.
- a doubled-tube hose 52 connects a connector 51 and a PCV valve 2 projecting out of a rear end wall 1a of the cylinder head cover 1.
- the doubled-tube hose 52 needs a space to keep bending angle, so that the arrangement of parts around the periphery of the hose is difficult. This is a factor of obstructing an engine to be made in a compact type.
- the present invention is worked out in view of the above-described problems in the prior art. It is an object of the present invention to provide a blowby gas passage construction that is capable of preventing the moisture in blowby gas from freezing and capable of reducing numbers of engine parts to make an engine in a compact type.
- Another object of the present invention is to provide a blowby gas passage construction having the advantage that an outside pipeline of an engine becomes useless, and thereby the engine can be designed into a compact type, and the degree of freedom for arrangement of parts is improved.
- a further object of the present invention is to provide a blowby gas passage construction including a rear cover composing a blowby gas passage, inside of which the blowby gas is warmed up to prevent the moisture in the blowby gas from freezing.
- a further object of the present invention is to provide a blowby gas passage construction including a deep recess formed in a rear end wall of a cylinder head cover, inside of which recess the blowby gas is warmed up to prevent the moisture in the blowby gas from freezing.
- a still further object of the present invention is to provide a blowby gas passage construction including a blowby gas introductory port positioned below the level of a discharge port in a recess, wherein the oil and moisture in the blowby gas are hard to accumulate in the recess, prevented from becoming sludge by oxidization and degradation to block the discharge port.
- a blowby gas passage construction comprises a cylinder head cover mounted on a cylinder head of an engine, which cylinder head cover has an internal portion wherein a blowby gas inside passage is formed for leading the blowby gas into the intake ports of the cylinder head, and has a rear end wall provided on the surface thereof with a blowby gas introductory port communicating with the blowby gas inside passage and a discharge port for discharging the blowby gas out of a PCV valve; and a rear cover attached to the rear end wall for covering the blowby gas introductory port and the discharge port and for making communication between both the ports.
- the second subject matter is that in the above blowby gas passage construction the blowby gas introductory port and the discharge port are provided within a recess formed in the wall surface of the cylinder head cover, both the ports are positioned under the wall surface, and the rear cover is made in a flat board for covering the recess.
- the third subject matter is that in the above blowby gas passage construction the blowby gas introductory port is positioned below the level of the discharge port.
- FIG.1 there is shown a rear end portion of a cylinder head cover 1 in accordance with the first embodiment of the present invention.
- a blowby gas inside passage 3 (not shown), in the same way as shown in FIG.9.
- the cylinder head cover 1 that is mounted on a cylinder head 5 is provided with flange portions 1c, 1c which are fixed by bolts to mounting flange surfaces 5a, 5a of the cylinder head 5.
- the blowby gas inside passage 3 is formed within the cylinder head cover 1 along a side wall 1b in the direction of a row of cylinders.
- the blowby gas inside passage 3 communicates with introductory passages 4, 4 provided vertically in the flange portions 1c, 1c.
- introductory passages 4, 4 communicating with the introductory passages 4, 4 of the cylinder head cover 1.
- Each of the introductory passages 4, 4 communicates with each of intake ports 6, 6 of the cylinders in the cylinder head 5.
- a shallow recess 7 in which is provided a discharge port 2a of a PCV valve 2, the tip end of which slightly projects from the surface of the rear end wall 1a. Also, in the recess 7 is provided a blowby gas introductory port 3a at a position below the level of the discharge port 2a, which port 3a communicates with the blowby gas inside passage 3 (not shown) that is formed in the cylinder head cover 1.
- a rear cover 10 for covering the recess 7.
- a flange portion 10a with through holes 10c, 10c for a screw 11 respectively.
- the rear cover 10 is integrally formed with a cover-inside passage portion 10b on the inside of the flange portion 10a.
- the cover-inside passage portion 10b has a shape agreeing with that of the recess 7 and projects outward, of which the hollow inside is a communication space S.
- the rear end wall 1a is provided with screw holes 8, 8 in the periphery of the recess 7 to attach the rear cover 10 by screws 11, 11.
- FIG.2 is a front view of the rear cover 10 fixed by screw 11 to the rear end wall 1a of the cylinder head cover 1;
- FIG.3 is a section taken on line X-X in FIG.2;
- FIG.4 is a section taken on line Y-Y in FIG.2;
- FIG.5 is a section taken on line Z-Z in FIG.2; and
- FIG.6 is a section taken on line W-W in FIG.3.
- a baffle plate 12 in FIG.4 and 5
- a vapor-liquid separation chamber 13 in FIG.5 and 6) in the position possible to communicate with the PCV valve 2.
- the vapor-liquid separation chamber 13 is provided for purpose of separating oil out of blowby gas.
- Blowby gas (unburned gas) generated in a crankcase includes engine oil in mist, vapor or liquid condition.
- the blowby gas including oil adheres to the inside of the intake passage and is carbonized to become carbon by heat generated in the engine. To avoid such a problem, the oil is separated in the vapor-liquid separation chamber 13.
- blowby gas in which the oil is removed in the vapor-liquid separation chamber 13, is blown out of the discharge port 2a of PCV valve 2 into the communication space S within the rear cover 10. Further, the blowby gas is introduced from the blowby gas introductory port 3a into the blowby gas inside passage 3, and then from the introductory passage 4 into the intake port 6.
- the inside of the communication space S is warmed by heat of an engine.
- the distance between the discharge port 2a and the blowby gas introductory port 3a is very short, so that the time is short that the flow of blowby gas keeps in contact with the side of the open air.
- the moisture in the blowby gas is prevented from freezing.
- the blowby gas flows through the blowby gas inside passage 3 in the cylinder head cover 1 that is warmed up by heat of the engine, the moisture in the blowby gas is prevented from freezing. Therefore, it can be avoided that the blowby gas passage is obstructed.
- the rear cover 10 made of aluminum is warmed by generation of heat in an engine, so that the inside of the communication space S can be well warmed up.
- blowby gas introductory port 3a is positioned below the level of the discharge port 2a, it is avoided that the discharge port 2a of PCV valve 2 is obstructed by oil and moisture in the blowby gas accumulated in the communication space S. That is, the oil and moisture in the blowby gas are drained away from the blowby gas introductory port 3a positioned at a lower level to the lower course smoothly. As a result, the oil and moisture in the blowby gas are difficult to accumulate in the communication space S.
- the rear end wall 1a of the cylinder head cover 1 is directly provided with a PCV valve 2 and a discharge port 2a which are projecting outward from the surface of the rear end wall 1a. Also, the rear end wall 1a is provided with a blowby gas introductory port 3a.
- the rear cover 10 comprises a flange portion 10a and a cover-inside passage portion 10b inside of which is formed a communication space S with sufficient depth for covering the PCV valve 2, the discharge port 2a and the blowby gas introductory port 3a.
- This type of cylinder head cover 1 in FIG.7 is easy to manufacture because of its simple construction that there is no need to form a recess 7 in the rear end wall 1a.
- FIG.8 an exploded view of another variation according to this invention, there is an inverse relationship with the case of FIG.7.
- the rear end wall 1a of the cylinder head cover 1 is provided with a deep recess 7, in which are formed a discharge port 2a of PCV valve 2 that is not projecting outside of the recess 7.
- a blowby gas introductory port 3a is provided in the bottom of the recess 7 in the bottom of the recess 7 .
- the discharge port 2a does not project out of the surface of the rear end wall 1a. Therefore, it becomes possible to favorably form a communication space S within the recess 7 by covering it with a board rear cover 10 attached to the rear end surface 1a. As a result, it becomes possible to simplify the shape of the rear cover 10. Moreover, the inside of the recess 7 is favorably warmed up by the heat of the cylinder head cover 1 during engine operation, so that the moisture in the blowby gas is more surely prevented from freezing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
- The present invention relates to the construction of a blowby gas passage in an internal combustion engine.
- In an internal combustion engine of the prior art, as disclosed in the following
Patent document 1, a positive crankcase ventilation (PCV) valve, which is provided in the outlet of an oil separator on a cylinder head cover, and an intake manifold are connected by a hose composing a blowby gas passage, wherein blowby gas is circulated through the hose located outside the engine. - Concerning the hose, there is used a double-tube hose comprising an external and an internal tube as disclosed in the following
Patent document 2. - Patent document 1: Japanese Patent Publication No.H08-93436
- Patent document 2: Japanese Utility Model Publication No.H05-30410
- In the construction as disclosed in
Patent document 1, a hose composing the blowby gas passage is plumbed outside the engine, so that in a very low temperature area such as a cold district there is a drawback that the blowby gas is cooled down inside the hose, and the moisture in the blowby gas is frozen to block the blowby gas passage. - Even in case that a doubled-tube hose such as disclosed in
Patent document 2 is used, there is a problem that the moisture in the blowby gas is frozen during flowing within the outside tube in contact with the open air. - Further, in the prior art construction, there is a problem that the degree of freedom for arrangement of engine parts is insufficient, because it is obliged to arrange the engine parts considering the arrangement of the outside hose and keeping away from the periphery of the hose.
- Further, in the prior art of FIG.9, a blowby gas passage is extending to
intake ports cylinder head 5, a part of the passage being included within acylinder head cover 1. In this construction, a doubled-tube hose 52 connects aconnector 51 and aPCV valve 2 projecting out of arear end wall 1a of thecylinder head cover 1. The doubled-tube hose 52 needs a space to keep bending angle, so that the arrangement of parts around the periphery of the hose is difficult. This is a factor of obstructing an engine to be made in a compact type. - The present invention is worked out in view of the above-described problems in the prior art. It is an object of the present invention to provide a blowby gas passage construction that is capable of preventing the moisture in blowby gas from freezing and capable of reducing numbers of engine parts to make an engine in a compact type.
- Another object of the present invention is to provide a blowby gas passage construction having the advantage that an outside pipeline of an engine becomes useless, and thereby the engine can be designed into a compact type, and the degree of freedom for arrangement of parts is improved.
- A further object of the present invention is to provide a blowby gas passage construction including a rear cover composing a blowby gas passage, inside of which the blowby gas is warmed up to prevent the moisture in the blowby gas from freezing.
- A further object of the present invention is to provide a blowby gas passage construction including a deep recess formed in a rear end wall of a cylinder head cover, inside of which recess the blowby gas is warmed up to prevent the moisture in the blowby gas from freezing.
- A still further object of the present invention is to provide a blowby gas passage construction including a blowby gas introductory port positioned below the level of a discharge port in a recess, wherein the oil and moisture in the blowby gas are hard to accumulate in the recess, prevented from becoming sludge by oxidization and degradation to block the discharge port.
- The subject matter of the present invention is that a blowby gas passage construction comprises a cylinder head cover mounted on a cylinder head of an engine, which cylinder head cover has an internal portion wherein a blowby gas inside passage is formed for leading the blowby gas into the intake ports of the cylinder head, and has a rear end wall provided on the surface thereof with a blowby gas introductory port communicating with the blowby gas inside passage and a discharge port for discharging the blowby gas out of a PCV valve; and a rear cover attached to the rear end wall for covering the blowby gas introductory port and the discharge port and for making communication between both the ports.
- The second subject matter is that in the above blowby gas passage construction the blowby gas introductory port and the discharge port are provided within a recess formed in the wall surface of the cylinder head cover, both the ports are positioned under the wall surface, and the rear cover is made in a flat board for covering the recess.
- The third subject matter is that in the above blowby gas passage construction the blowby gas introductory port is positioned below the level of the discharge port.
- In the drawings:
- FIG.1 is an exploded view in perspective of the rear end portion of a cylinder head cover and the elements of a rear cover in accordance with the first embodiment;
- FIG.2 is a front view of the rear cover of FIG.1 in attached condition;
- FIG.3 is a cross-sectional view taken on line X-X of FIG.2;
- FIG.4 is a cross-sectional view taken on line Y-Y of FIG.2;
- FIG.5 is a cross-sectional view taken on line Z-Z of FIG.2;
- FIG.6 is a cross-sectional view taken on line W-W of FIG.3;
- FIG.7 is an exploded view in perspective of a cylinder head cover and a rear cover in accordance with the second embodiment as a modified form;
- FIG.8 is an exploded view in perspective of a cylinder head cover and a rear cover in accordance with the third embodiment as another modified form; and
- FIG.9 is an exploded view in perspective of a conventional construction of a cylinder head cover inside of which is formed a blowby gas inside passage.
- Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
- Referring to FIG.1, there is shown a rear end portion of a
cylinder head cover 1 in accordance with the first embodiment of the present invention. Within thecylinder head cover 1 is formed a blowby gas inside passage 3 (not shown), in the same way as shown in FIG.9. Referring to FIG.9, thecylinder head cover 1 that is mounted on acylinder head 5 is provided withflange portions flange surfaces cylinder head 5. The blowby gas insidepassage 3 is formed within thecylinder head cover 1 along aside wall 1b in the direction of a row of cylinders. The blowby gas insidepassage 3 communicates withintroductory passages flange portions - Further, in the
mounting flange surfaces cylinder head 5 are formedintroductory passages introductory passages cylinder head cover 1. Each of theintroductory passages intake ports cylinder head 5. - As shown enlarged in FIG.1, in the
rear end wall 1a of thecylinder head cover 1 is hollowed out ashallow recess 7, in which is provided adischarge port 2a of aPCV valve 2, the tip end of which slightly projects from the surface of therear end wall 1a. Also, in therecess 7 is provided a blowby gasintroductory port 3a at a position below the level of thedischarge port 2a, whichport 3a communicates with the blowby gas inside passage 3 (not shown) that is formed in thecylinder head cover 1. - On the outside surface of the
rear end wall 1a is attached arear cover 10 for covering therecess 7. Around the periphery of therear cover 10 is formed aflange portion 10a with throughholes screw 11 respectively. Also, therear cover 10 is integrally formed with a cover-insidepassage portion 10b on the inside of theflange portion 10a. The cover-inside passage portion 10b has a shape agreeing with that of therecess 7 and projects outward, of which the hollow inside is a communication space S. Incidentally, therear end wall 1a is provided withscrew holes recess 7 to attach therear cover 10 byscrews - FIG.2 is a front view of the
rear cover 10 fixed byscrew 11 to therear end wall 1a of thecylinder head cover 1; FIG.3 is a section taken on line X-X in FIG.2; FIG.4 is a section taken on line Y-Y in FIG.2; FIG.5 is a section taken on line Z-Z in FIG.2; and FIG.6 is a section taken on line W-W in FIG.3. - In the bottom portion of the
cylinder head cover 1 is disposed a baffle plate 12 (in FIG.4 and 5), over which is formed a vapor-liquid separation chamber 13 (in FIG.5 and 6) in the position possible to communicate with thePCV valve 2. - The vapor-
liquid separation chamber 13 is provided for purpose of separating oil out of blowby gas. Blowby gas (unburned gas) generated in a crankcase includes engine oil in mist, vapor or liquid condition. When the blowby gas is introduced into an intake side of an engine, the blowby gas including oil adheres to the inside of the intake passage and is carbonized to become carbon by heat generated in the engine. To avoid such a problem, the oil is separated in the vapor-liquid separation chamber 13. - The blowby gas, in which the oil is removed in the vapor-
liquid separation chamber 13, is blown out of thedischarge port 2a ofPCV valve 2 into the communication space S within therear cover 10. Further, the blowby gas is introduced from the blowby gasintroductory port 3a into the blowby gas insidepassage 3, and then from theintroductory passage 4 into theintake port 6. - In case the
rear cover 10 is made of aluminum or made of synthetic resin that has the adiabatic effect, the inside of the communication space S is warmed by heat of an engine. Besides, in the communication space S, the distance between thedischarge port 2a and the blowby gasintroductory port 3a is very short, so that the time is short that the flow of blowby gas keeps in contact with the side of the open air. As a result, the moisture in the blowby gas is prevented from freezing. Moreover, since the blowby gas flows through the blowby gas insidepassage 3 in thecylinder head cover 1 that is warmed up by heat of the engine, the moisture in the blowby gas is prevented from freezing. Therefore, it can be avoided that the blowby gas passage is obstructed. - In particular, the
rear cover 10 made of aluminum is warmed by generation of heat in an engine, so that the inside of the communication space S can be well warmed up. - Since the blowby gas
introductory port 3a is positioned below the level of thedischarge port 2a, it is avoided that thedischarge port 2a ofPCV valve 2 is obstructed by oil and moisture in the blowby gas accumulated in the communication space S. That is, the oil and moisture in the blowby gas are drained away from the blowby gasintroductory port 3a positioned at a lower level to the lower course smoothly. As a result, the oil and moisture in the blowby gas are difficult to accumulate in the communication space S. - Referring to FIG.7, an exploded view of a variation according to this invention, the
rear end wall 1a of thecylinder head cover 1 is directly provided with aPCV valve 2 and adischarge port 2a which are projecting outward from the surface of therear end wall 1a. Also, therear end wall 1a is provided with a blowby gasintroductory port 3a. Therear cover 10 comprises aflange portion 10a and a cover-inside passage portion 10b inside of which is formed a communication space S with sufficient depth for covering thePCV valve 2, thedischarge port 2a and the blowby gasintroductory port 3a. - This type of
cylinder head cover 1 in FIG.7 is easy to manufacture because of its simple construction that there is no need to form arecess 7 in therear end wall 1a. - Referring to FIG.8, an exploded view of another variation according to this invention, there is an inverse relationship with the case of FIG.7. Namely, the
rear end wall 1a of thecylinder head cover 1 is provided with adeep recess 7, in which are formed adischarge port 2a ofPCV valve 2 that is not projecting outside of therecess 7. Further, in the bottom of therecess 7 is provided a blowby gasintroductory port 3a. - Accordingly, in the construction of the
cylinder head cover 1 in FIG.8 thedischarge port 2a does not project out of the surface of therear end wall 1a. Therefore, it becomes possible to favorably form a communication space S within therecess 7 by covering it with a boardrear cover 10 attached to therear end surface 1a. As a result, it becomes possible to simplify the shape of therear cover 10. Moreover, the inside of therecess 7 is favorably warmed up by the heat of thecylinder head cover 1 during engine operation, so that the moisture in the blowby gas is more surely prevented from freezing. - Besides, it becomes possible to make the whole of the
cylinder head cover 1 in a smaller size corresponding to the reduction of the outwardly projected length of therear cover 10. Further, the conventional outside pipeline such as blowby gas hose becomes useless and does not project outward, so that other engine parts become easy to arrangement, numbers of parts are capable of reducing to make the engine in a compact type, and the degree of freedom for parts arrangement is improved. - Having described the invention in detail and by reference to the preferred embodiment thereof, it will be apparent that other modifications and variations are possible without departing from the scope of the invention defined in the appended claims.
Claims (3)
- A blowby gas passage construction in an internal combustion engine, comprising:a cylinder head cover mounted on a cylinder head of the engine;said cylinder head cover having an internal portion wherein a blowby gas inside passage is formed for leading the blowby gas into the intake ports of said cylinder head;said cylinder head cover having a rear end wall provided on the surface thereof with a blowby gas introductory port communicating with said blowby gas inside passage and a discharge port for discharging the blowby gas out of a positive crankcase ventilation valve; anda rear cover attached to said rear end wall for covering said blowby gas introductory port and said discharge port and for making communication between both said ports.
- A blowby gas passage construction as claimed in claim 1, wherein said blowby gas introductory port and said discharge port are provided within a recess formed in said wall surface of said cylinder head cover, both said ports are positioned under said wall surface, and said rear cover is made in a flat board for covering said recess.
- A blowby gas passage construction as claimed in claim 1 or 2, wherein said blowby gas introductory port is positioned below the level of said discharge port.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005018990A JP2006207437A (en) | 2005-01-26 | 2005-01-26 | Structure of blowby gas passage for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1686245A2 true EP1686245A2 (en) | 2006-08-02 |
EP1686245A3 EP1686245A3 (en) | 2010-06-02 |
Family
ID=36371769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06250260A Withdrawn EP1686245A3 (en) | 2005-01-26 | 2006-01-18 | Blowby gas passage construction |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1686245A3 (en) |
JP (1) | JP2006207437A (en) |
CN (1) | CN100532795C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111022148A (en) * | 2018-10-10 | 2020-04-17 | 现代自动车株式会社 | Blow-by gas purifying apparatus for engine and port adapter |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4730279B2 (en) * | 2006-10-23 | 2011-07-20 | マツダ株式会社 | Engine intake system |
JP4954114B2 (en) | 2008-02-18 | 2012-06-13 | 愛知機械工業株式会社 | Blowby gas recirculation structure and internal combustion engine having the same |
JP5277000B2 (en) * | 2009-01-19 | 2013-08-28 | 本田技研工業株式会社 | PCV passage |
JP5536578B2 (en) * | 2010-07-22 | 2014-07-02 | 株式会社マキタ | 4-cycle engine lubrication system |
JP5335880B2 (en) * | 2011-11-25 | 2013-11-06 | 本田技研工業株式会社 | Blow-by passage structure of an internal combustion engine |
JP6135102B2 (en) * | 2012-11-22 | 2017-05-31 | アイシン精機株式会社 | Blow-by gas reduction device |
JP6365310B2 (en) * | 2015-01-07 | 2018-08-01 | スズキ株式会社 | Internal combustion engine |
CN114151221B (en) * | 2021-12-07 | 2023-08-08 | 青岛再特模具有限公司 | Integrated press-fitting structure of engine cylinder head cover built-in PCV valve |
CN115788618B (en) * | 2022-11-29 | 2024-04-23 | 重庆长安汽车股份有限公司 | Built-in PCV valve mounting structure, internal combustion engine and vehicle |
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JPH0530410U (en) | 1991-09-27 | 1993-04-23 | 日産デイーゼル工業株式会社 | Blow-by gas circulation hose |
JPH068714B2 (en) * | 1985-04-10 | 1994-02-02 | 松下冷機株式会社 | Refrigerator with high-frequency defroster |
JPH0893436A (en) | 1994-09-20 | 1996-04-09 | Nissan Motor Co Ltd | Blow-by gas ventilation device for internal combustion engine |
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JPS5759U (en) * | 1980-05-30 | 1982-01-05 | ||
JPS6018564Y2 (en) * | 1980-10-02 | 1985-06-05 | ヤンマーディーゼル株式会社 | Breather device for overhead valve type internal combustion engine |
US4602607A (en) * | 1985-02-25 | 1986-07-29 | General Motors Corporation | Internal crankcase ventilation system with easily accessible PCV valve |
IT1221426B (en) * | 1988-05-13 | 1990-07-06 | Lombardini Fabbr Ital Motori S | VALVE VALVE COMPARTMENT COVER FOR INTERNAL COMBUSTION ENGINES, WITH LUBRICANT OIL SUCTION DEVICE |
JP3307507B2 (en) * | 1994-06-23 | 2002-07-24 | 東京瓦斯株式会社 | Fluid flow meter |
JPH08200033A (en) * | 1995-01-24 | 1996-08-06 | Aichi Mach Ind Co Ltd | Crankcase emission control system |
US6065457A (en) * | 1998-06-30 | 2000-05-23 | Harley-Davidson Motor Company | Breather assembly for an internal combustion engine |
JP3861560B2 (en) * | 2000-04-21 | 2006-12-20 | 日産自動車株式会社 | engine |
JP4042951B2 (en) * | 2001-06-29 | 2008-02-06 | 本田技研工業株式会社 | Blow-by gas reduction device |
JP2003090207A (en) * | 2001-09-18 | 2003-03-28 | Yanmar Co Ltd | Breather device for engine |
-
2005
- 2005-01-26 JP JP2005018990A patent/JP2006207437A/en active Pending
-
2006
- 2006-01-18 EP EP06250260A patent/EP1686245A3/en not_active Withdrawn
- 2006-01-19 CN CNB2006100061405A patent/CN100532795C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH068714B2 (en) * | 1985-04-10 | 1994-02-02 | 松下冷機株式会社 | Refrigerator with high-frequency defroster |
JPH0530410U (en) | 1991-09-27 | 1993-04-23 | 日産デイーゼル工業株式会社 | Blow-by gas circulation hose |
JPH0893436A (en) | 1994-09-20 | 1996-04-09 | Nissan Motor Co Ltd | Blow-by gas ventilation device for internal combustion engine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111022148A (en) * | 2018-10-10 | 2020-04-17 | 现代自动车株式会社 | Blow-by gas purifying apparatus for engine and port adapter |
Also Published As
Publication number | Publication date |
---|---|
JP2006207437A (en) | 2006-08-10 |
CN100532795C (en) | 2009-08-26 |
CN1811138A (en) | 2006-08-02 |
EP1686245A3 (en) | 2010-06-02 |
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