EP1995418B1 - Breather device of crankcase for 4-cycle engine - Google Patents
Breather device of crankcase for 4-cycle engine Download PDFInfo
- Publication number
- EP1995418B1 EP1995418B1 EP07702208A EP07702208A EP1995418B1 EP 1995418 B1 EP1995418 B1 EP 1995418B1 EP 07702208 A EP07702208 A EP 07702208A EP 07702208 A EP07702208 A EP 07702208A EP 1995418 B1 EP1995418 B1 EP 1995418B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder head
- oil
- crankcase
- gas
- way valve
- 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.)
- Not-in-force
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Classifications
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- 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
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- 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
- F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
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- 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
- F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
Definitions
- the present invention relates to a crankcase scavenging mechanism for a four-stroke engine in the technical field of power device, in particular to a crankcase scavenging mechanism which can effectively prevent the lubricating oil from entering the suction system while oil mist separation effect is well during the operation of the engine.
- the scavenging mechanism should effectively expel the exhaust gases and separate the oil mist well to prevent the lubricating oil from entering into the suction system.
- the scavenging mechanism is located such that it is well separated from the lubricating oil during the operation of the engine.
- the scavenging mechanism tends to have no good effect of oil-returning; furthermore, the one-way valve is of wafer type, which the one-way valve is not opened or can not be reset due to occurrence of abrasion, aging, deformation or losing elasticity, so that the leakage of the engine oil is caused.
- EP 0341770 discloses a cover for the valve rocker compartment of internal combustion engines.
- the cover comprises a hollow shaped casing for closing the compartment containing the rockers which operate the engine intake and exhaust valves, and a duct system which connects said shaped casing to the engine air intake manifold.
- the duct system is intercepted by a valving member which is kept in the open position by an elastic member of predetermined load, but closes said duct system when the vacuum in the manifold reaches an undesirable value.
- the internal combustion engine has an auxiliary equipment mounted on side wall of the cylinder block through a reinforcement bracket so that a breather chamber is formed between the side wall of the cylinder block and the reinforcement bracket.
- the auxiliary equipment would cause the increasing of parts number and the complexity of structure, which is not advantageous to light-weight design.
- an objective of the present invention is to provide a compact and reliable scavenging mechanism for an engine, in which the remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion during the operation of the engine, while the lubricating oil can be prevented from entering the suction system by air-fuel separation and oil-returning effect is well.
- the scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, while ensuring weight-reducing of the four-stroke engine with the scavenging mechanism.
- a main body 1 according to the present invention of the engine comprises a casing 7, a cylinder sleeve 8 and a cylinder head 9; wherein a crankcase 6 of the engine is assembled from the casing 7 and a crankcase cover 2, the crankcase 6 being provided with a rotatable support crankshaft 4 therein and containing lubricating oil 35; a valve operating chamber 5 is assembled from the cylinder head 9 and a cylinder head cover 3 and is communicated with the crankcase 6; a piston 10 is connected to a crankpin of the crankshaft 4 via a connecting rod 11; the cylinder head 9 is communicated with a combustion chamber 19; a suction system 20 is held on the cylinder head 9 to communicate with a gas inlet 17 of the cylinder head 9; the cylinder head cover 3 is arranged on the cylinder head 9; the present invention is characterized in that the cylinder head cover 3 is provided with a gas-oil separating cavity 23 on the top thereof, the gas-oil separating cavity 23 being of labyrin
- the present invention has the following advantages:
- the crankcase scavenging mechanism for a four-stroke engine in the present invention has a simple, compact and reasonable structure. Secondly, the remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion during the operation of the engine, while the lubricating oil can be prevented from entering the suction system by air-fuel separation and oil-returning effect is well. Finally, the scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, while ensuring light-weight of the four-stroke engine with the scavenging mechanism.
- the present invention comprises a main body 1 of the engine, a crankcase cover 2, a cylinder head cover 3, a crankshaft 4, a valve operating chamber 5, a crankcase 6, an engine casing 7, a cylinder sleeve 8, a cylinder head 9, a piston 10, a connecting rod 11, a connecting-rod cap 12 for big-end of the connecting rod, an oil-scattering needle 13, ball bearings 15 and 16, a gas inlet 17, a gas outlet 18, a combustion chamber 19, a suction system 20, an air filter 21, a carburetor 22, a gas-oil separating cavity 23, a bolt 24, a partition plate 25, an oil-gas separation chamber 26, a one-way valve 27, a one-way valve hole 28, a valve seat 29, a plastic ball 30, a cylindrical pin 31, a seal ring 32, a cylinder head cover passage 33, an oil-returning hole 34, lubricating oil 35, labyrinth-forming walls 36, a passage 37, an inclined orifice 38, a plug 39, a
- the present invention is directed to a four-stroke engine.
- the main body 1 of the engine comprises the casing 7, the cylinder sleeve 8 and the cylinder head 9.
- the crankcase 6 of the engine is assembled from the casing 7 and the crankcase cover 2.
- the crankcase 6 contains lubricating oil 35 and is provided with a rotatable support crankshaft 4 therein which is oriented horizontally during the operation of the engine.
- the valve operating chamber 5 is assembled from the cylinder head 9 and the cylinder head cover 3 and is communicated with the crankcase 6.
- the piston 10 is connected to the crankpin of the crankshaft 4 via the connecting rod 11.
- the oil-scattering needle 13 integrally formed on the connecting-rod cap 12 for big-end of the connecting rod is used for scattering the lubricating oil 35 in the crankcase 6. Both ends of the crankshaft 4 are supported by the ball bearing 15 and bearing block 16.
- the cylinder head 9 comprises the gas inlet 17 and the gas outlet 18 which are communicating with the combustion chamber 19.
- the suction system 20 comprises the air filter 21 and the carburetor 22 and is held on the cylinder head 9 to communicate with the gas inlet 17.
- the cylinder head cover 3 is arranged on the cylinder head 9 and is provided with the gas-oil separating cavity 23 on the top thereof.
- the gas-oil separating cavity 23 is of labyrinth formed by three labyrinth-forming walls 36 and is communicated with the valve operating chamber 5 via the passage 37; furthermore, the gas-oil separating cavity 23 is connected to the partition plate 25 by the bolt 24 to form the oil-gas separation chamber 26.
- the one-way valve 27 is provided on the oil-gas separation chamber 26 and installed in the one-way valve hole 28.
- the one-way valve 27 comprises the valve seat 29, the plastic ball 30 within the valve seat 29, the cylindrical pin 31 and the seal ring 32.
- the cylinder head cover passage 33 is located above the one-way valve 27.
- a portion of the passage 33 is in a form of the inclined orifice 38, one end of which is blocked by the plug 39, the other end of which communicates with the cylinder head 9 through the hollow pin 40 and further communicates with suction tube 14 through the cylinder head communication passage 41.
- the oil-returning hole 34 is formed between the inclined orifice 38 of the passage 33 and the oil-gas separation chamber 26 so as to separate the lubricating oil and thereby prevent the lubricating oil from entering into the suction system.
- the oil-scattering needle 13 on the connecting-rod cap 12 for big-end of the connecting rod scatters the lubricating oil 35 and then the lubricating oil 35 in a form of oil mist reaches the valve operating room 5 via the crankcase 6.
- the scavenging gas appeared in the crankcase 6 also enters into the valve operating room 5 and further into the oil-gas separation chamber 26 via the passage 37.
- the plastic ball 30 of the one-way valve 27 is pushed out so that the scavenging gas enters into the cylinder head cover passage 33 and then into the suction tube 14 through the hollow pin 40 and the cylinder head communication passage 41 and finally into the combustion chamber 19 via an intake valve.
- the scavenging gas goes through the gas-oil separating cavity 23, the oil mist is separated from the oil gas mixture by the labyrinth-forming walls 36 and then returns to the crankcase 6 via the passage 37.
- the oil mist will be separated again and returns to the oil-gas separation chamber 26 via the oil-returning hole 34, thereby enhancing the capability of oil mist separation. Additionally, when the one-way valve 27 installed in the one-way valve hole 28 is closed, the seal ring 32 of the one-way valve 27 can reliably prevent the oil mist from entering into the cylinder head cover passage 33.
- the plastic ball 30 can move freely in the valve seat 29 and can self-return due to its gravity so as to prevent the redundant gas sucked by the suction system 20 from entering into the crankcase 6.
- the scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, which can also be utilized for any four-stroke engine.
- the remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion, while the lubricating oil can be prevented from entering the suction system by oil mist separation and oil-returning effect is well.
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 a crankcase scavenging mechanism for a four-stroke engine in the technical field of power device, in particular to a crankcase scavenging mechanism which can effectively prevent the lubricating oil from entering the suction system while oil mist separation effect is well during the operation of the engine.
- During the operation of the engine, a portion of air/fuel mixture and exhaust gases in the cylinder enters into the crankcase via a gap between the piston ring and the cylinder wall, wherein the engine oil will be diluted with shorten life-span due to the condense of the fuel steam and the abrasion of parts in the engine will be caused due to the strong corrosion action of the exhaust gases to the parts, while the leakage of the engine oil occurs due to the higher pressure. Accordingly, in order to prolong the life-span of the engine oil, reduce the abrasion of the parts and prevent the leakage of the engine oil, it is necessary to provide a scavenging mechanism for expelling the exhaust gases from the cylinder of the engine. The scavenging mechanism should effectively expel the exhaust gases and separate the oil mist well to prevent the lubricating oil from entering into the suction system. The scavenging mechanism is located such that it is well separated from the lubricating oil during the operation of the engine. In the general engine, the scavenging mechanism tends to have no good effect of oil-returning; furthermore, the one-way valve is of wafer type, which the one-way valve is not opened or can not be reset due to occurrence of abrasion, aging, deformation or losing elasticity, so that the leakage of the engine oil is caused.
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EP 0341770 discloses a cover for the valve rocker compartment of internal combustion engines. The cover comprises a hollow shaped casing for closing the compartment containing the rockers which operate the engine intake and exhaust valves, and a duct system which connects said shaped casing to the engine air intake manifold. The duct system is intercepted by a valving member which is kept in the open position by an elastic member of predetermined load, but closes said duct system when the vacuum in the manifold reaches an undesirable value. - In the prior art, the internal combustion engine has an auxiliary equipment mounted on side wall of the cylinder block through a reinforcement bracket so that a breather chamber is formed between the side wall of the cylinder block and the reinforcement bracket. However, the auxiliary equipment would cause the increasing of parts number and the complexity of structure, which is not advantageous to light-weight design.
- For overcoming the above-mentioned deficiencies in the prior art, an objective of the present invention is to provide a compact and reliable scavenging mechanism for an engine, in which the remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion during the operation of the engine, while the lubricating oil can be prevented from entering the suction system by air-fuel separation and oil-returning effect is well. The scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, while ensuring weight-reducing of the four-stroke engine with the scavenging mechanism.
- To achieve the above mentioned objective, the technical solution of the present invention is as follows:
- A main body 1 according to the present invention of the engine comprises a
casing 7, acylinder sleeve 8 and acylinder head 9; wherein acrankcase 6 of the engine is assembled from thecasing 7 and acrankcase cover 2, thecrankcase 6 being provided with arotatable support crankshaft 4 therein and containing lubricatingoil 35; avalve operating chamber 5 is assembled from thecylinder head 9 and acylinder head cover 3 and is communicated with thecrankcase 6; apiston 10 is connected to a crankpin of thecrankshaft 4 via a connectingrod 11; thecylinder head 9 is communicated with acombustion chamber 19; asuction system 20 is held on thecylinder head 9 to communicate with agas inlet 17 of thecylinder head 9; thecylinder head cover 3 is arranged on thecylinder head 9; the present invention is characterized in that thecylinder head cover 3 is provided with a gas-oil separating cavity 23 on the top thereof, the gas-oil separating cavity 23 being of labyrinth formed by three labyrinth-formingwalls 36, being communicated with thevalve operating chamber 5 via apassage 37 and being connected with apartition plate 25 to form the oil-gas separation chamber 26; the oil-gas separation chamber 26 is provided with a one-way valve 27 thereon, the one-way valve 27 being installed in a one-way valve hole 28; apassage 33 above the one-way valve 27 is provided with aninclined orifice 38, one end of which is blocked by a plug 39, the other end of which is communicated with thecylinder head 9 and is further communicated with asuction tube 14 through a cylinderhead communication passage 41; an oil-returninghole 34 is formed between theinclined orifice 38 of thepassage 33 and the oil-gas separation chamber 26. - In comparison with the prior art, the present invention has the following advantages:
- The crankcase scavenging mechanism for a four-stroke engine in the present invention has a simple, compact and reasonable structure. Secondly, the remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion during the operation of the engine, while the lubricating oil can be prevented from entering the suction system by air-fuel separation and oil-returning effect is well. Finally, the scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, while ensuring light-weight of the four-stroke engine with the scavenging mechanism.
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FIG. 1 is a longitudinal sectional view of the structure of the present invention; -
FIG. 2 is a transversal sectional view of the structure of the present invention; -
FIG. 3 is a bottom view at portion A shown inFIG. 2 ; -
FIG. 4 is a section view along line A-A shown inFIG. 3 . - The present invention will be further described with reference to the embodiment shown in the drawings.
- The present invention comprises a main body 1 of the engine, a
crankcase cover 2, acylinder head cover 3, acrankshaft 4, avalve operating chamber 5, acrankcase 6, anengine casing 7, acylinder sleeve 8, acylinder head 9, apiston 10, a connectingrod 11, a connecting-rod cap 12 for big-end of the connecting rod, an oil-scatteringneedle 13,ball bearings gas inlet 17, agas outlet 18, acombustion chamber 19, asuction system 20, anair filter 21, acarburetor 22, a gas-oil separatingcavity 23, abolt 24, apartition plate 25, an oil-gas separation chamber 26, a one-way valve 27, a one-way valve hole 28, avalve seat 29, aplastic ball 30, acylindrical pin 31, aseal ring 32, a cylinderhead cover passage 33, an oil-returninghole 34, lubricatingoil 35, labyrinth-formingwalls 36, apassage 37, aninclined orifice 38, a plug 39, ahollow pin 40, a cylinderhead communication passage 41 and asuction tube 14, etc. - The present invention is directed to a four-stroke engine. The main body 1 of the engine comprises the
casing 7, thecylinder sleeve 8 and thecylinder head 9. Thecrankcase 6 of the engine is assembled from thecasing 7 and thecrankcase cover 2. Thecrankcase 6 contains lubricatingoil 35 and is provided with arotatable support crankshaft 4 therein which is oriented horizontally during the operation of the engine. Thevalve operating chamber 5 is assembled from thecylinder head 9 and thecylinder head cover 3 and is communicated with thecrankcase 6. Thepiston 10 is connected to the crankpin of thecrankshaft 4 via the connectingrod 11. The oil-scatteringneedle 13 integrally formed on the connecting-rod cap 12 for big-end of the connecting rod is used for scattering the lubricatingoil 35 in thecrankcase 6. Both ends of thecrankshaft 4 are supported by the ball bearing 15 and bearingblock 16. Thecylinder head 9 comprises thegas inlet 17 and thegas outlet 18 which are communicating with thecombustion chamber 19. Thesuction system 20 comprises theair filter 21 and thecarburetor 22 and is held on thecylinder head 9 to communicate with thegas inlet 17. Thecylinder head cover 3 is arranged on thecylinder head 9 and is provided with the gas-oil separatingcavity 23 on the top thereof. The gas-oil separatingcavity 23 is of labyrinth formed by three labyrinth-formingwalls 36 and is communicated with thevalve operating chamber 5 via thepassage 37; furthermore, the gas-oil separatingcavity 23 is connected to thepartition plate 25 by thebolt 24 to form the oil-gas separation chamber 26. The one-way valve 27 is provided on the oil-gas separation chamber 26 and installed in the one-way valve hole 28. The one-way valve 27 comprises thevalve seat 29, theplastic ball 30 within thevalve seat 29, thecylindrical pin 31 and theseal ring 32. The cylinderhead cover passage 33 is located above the one-way valve 27. A portion of thepassage 33 is in a form of theinclined orifice 38, one end of which is blocked by the plug 39, the other end of which communicates with thecylinder head 9 through thehollow pin 40 and further communicates withsuction tube 14 through the cylinderhead communication passage 41. The oil-returninghole 34 is formed between theinclined orifice 38 of thepassage 33 and the oil-gas separation chamber 26 so as to separate the lubricating oil and thereby prevent the lubricating oil from entering into the suction system. - The operation principle and process of the present invention is described hereinafter:
- When the
piston 10 drives thecrankshaft 4 to rotate, the oil-scatteringneedle 13 on the connecting-rod cap 12 for big-end of the connecting rod scatters the lubricatingoil 35 and then the lubricatingoil 35 in a form of oil mist reaches thevalve operating room 5 via thecrankcase 6. At the same time, the scavenging gas appeared in thecrankcase 6 also enters into thevalve operating room 5 and further into the oil-gas separation chamber 26 via thepassage 37. Due to the pressure pulse appeared in thecrankcase 6 with reciprocation movement of thepiston 10, theplastic ball 30 of the one-way valve 27 is pushed out so that the scavenging gas enters into the cylinderhead cover passage 33 and then into thesuction tube 14 through thehollow pin 40 and the cylinderhead communication passage 41 and finally into thecombustion chamber 19 via an intake valve. When the scavenging gas goes through the gas-oil separatingcavity 23, the oil mist is separated from the oil gas mixture by the labyrinth-formingwalls 36 and then returns to thecrankcase 6 via thepassage 37. After the scavenging gas enters into the cylinderhead cover passage 33, the oil mist will be separated again and returns to the oil-gas separation chamber 26 via the oil-returninghole 34, thereby enhancing the capability of oil mist separation. Additionally, when the one-way valve 27 installed in the one-way valve hole 28 is closed, theseal ring 32 of the one-way valve 27 can reliably prevent the oil mist from entering into the cylinderhead cover passage 33. Theplastic ball 30 can move freely in thevalve seat 29 and can self-return due to its gravity so as to prevent the redundant gas sucked by thesuction system 20 from entering into thecrankcase 6. - In conclusion, the scavenging mechanism is totally arranged inside the engine with better space utilization efficiency so as not to enlarge dimensions of the engine, which can also be utilized for any four-stroke engine. The remained gases in the crankcase can be sucked into the suction tube via a communication passage and then enter into the combustion chamber for combustion, while the lubricating oil can be prevented from entering the suction system by oil mist separation and oil-returning effect is well.
Claims (3)
- A four-stroke engine with a crankcase scavenging mechanism comprising
a main body (1) with a casing (7), a cylinder sleeve (8) and a cylinder head (9);
a crankcase (6) being assembled from the casing (7) and a crankcase cover (2), wherein the crankcase (6) is provided with a crankshaft (4) therein and having lubricating oil (35);
a valve operating chamber (5) being assembled from the cylinder head (9) and a cylinder head cover (3) and communicating with the crankcase (6);
a piston (10) being connected to a crankpin of the crankshaft (4) via a connecting rod (11); wherein the cylinder head (9) is communicating with a combustion chamber (19);
a suction system (20) being held on the cylinder head (9) to communicate with a gas inlet (17); wherein the cylinder head cover (3) is arranged on the cylinder head (9);
wherein the cylinder head cover (3) is provided with a gas-oil separating cavity (23) thereon,
wherein the gas-oil separating cavity (23) is communicated with the valve operating chamber (5) via a passage (37) and is connected with a partition plate (25) to form the oil-gas separation chamber (26);
wherein the oil-gas separation chamber (26) is provided with a one-way valve (27) thereon, wherein the one-way valve (27) is placed in a one-way valve hole (28);
wherein a passage (33) above the one-way valve (27) is provided with an inclined orifice (38),
characterized in that one end of the inclined orifice (38) is blocked by a plug (39), the other end of the inclined orifice (38) is communicated with the cylinder head (9) and is further communicated with a suction tube (14) through a cylinder head communication passage (41); and
wherein an oil-returning hole (34) is formed between the inclined orifice (38) of the passage (33) and the oil-gas separation chamber (26). - The crankcase scavenging mechanism for the four-stroke engine according to claim 1, being characterized in that the gas-oil separating cavity (23) is of labyrinth formed by three labyrinth-forming walls (36).
- The crankcase scavenging mechanism for the four-stroke engine according to claim 1 or 2, being characterized in that; the one-way valve (27) comprises a valve seat (29), a plastic ball (30) a cylindrical pin (31), and a seal ring (32);
wherein the plastic ball (30) and the seal ring are placed in the valve seat (29).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2006100386981A CN100383365C (en) | 2006-03-08 | 2006-03-08 | Air-exchanging structure of crank case of four-stroke engine |
PCT/CN2007/000290 WO2007101387A1 (en) | 2006-03-08 | 2007-01-25 | Breather device of crankcase for 4-cycle engine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1995418A1 EP1995418A1 (en) | 2008-11-26 |
EP1995418A4 EP1995418A4 (en) | 2011-01-05 |
EP1995418B1 true EP1995418B1 (en) | 2012-04-25 |
Family
ID=36918522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07702208A Not-in-force EP1995418B1 (en) | 2006-03-08 | 2007-01-25 | Breather device of crankcase for 4-cycle engine |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090084342A1 (en) |
EP (1) | EP1995418B1 (en) |
CN (1) | CN100383365C (en) |
AT (1) | ATE555277T1 (en) |
AU (1) | AU2007222812B2 (en) |
ES (1) | ES2386019T3 (en) |
TR (1) | TR200806687T1 (en) |
WO (1) | WO2007101387A1 (en) |
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CN101280704B (en) * | 2008-05-06 | 2013-07-31 | 孙鹤鸣 | Arbitrary overturn four-stroke cycle engine |
JP5463111B2 (en) * | 2009-09-24 | 2014-04-09 | 株式会社マキタ | Lubricating device for portable 4-cycle engine |
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CN102192041B (en) * | 2010-12-31 | 2016-08-17 | 宁波易能动力科技有限公司 | Handheld tool quartastroke engine |
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CN104500176A (en) * | 2014-12-29 | 2015-04-08 | 无锡华源凯马发动机有限公司 | Breather structure of cylinder cover hood of single-cylinder air-cooled diesel engine |
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CN109763875A (en) * | 2019-01-04 | 2019-05-17 | 山东华盛农业药械有限责任公司 | The gas and oil separating plant of gasoline engine lubricating system |
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2006
- 2006-03-08 CN CNB2006100386981A patent/CN100383365C/en active Active
-
2007
- 2007-01-25 AU AU2007222812A patent/AU2007222812B2/en not_active Ceased
- 2007-01-25 EP EP07702208A patent/EP1995418B1/en not_active Not-in-force
- 2007-01-25 AT AT07702208T patent/ATE555277T1/en active
- 2007-01-25 TR TR2008/06687T patent/TR200806687T1/en unknown
- 2007-01-25 ES ES07702208T patent/ES2386019T3/en active Active
- 2007-01-25 US US12/281,800 patent/US20090084342A1/en not_active Abandoned
- 2007-01-25 WO PCT/CN2007/000290 patent/WO2007101387A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP1995418A4 (en) | 2011-01-05 |
WO2007101387A1 (en) | 2007-09-13 |
ATE555277T1 (en) | 2012-05-15 |
US20090084342A1 (en) | 2009-04-02 |
CN1818355A (en) | 2006-08-16 |
EP1995418A1 (en) | 2008-11-26 |
CN100383365C (en) | 2008-04-23 |
AU2007222812A1 (en) | 2007-09-13 |
AU2007222812B2 (en) | 2011-06-30 |
ES2386019T3 (en) | 2012-08-07 |
TR200806687T1 (en) | 2009-01-21 |
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