CN100383365C - Air-exchanging structure of crank case of four-stroke engine - Google Patents
Air-exchanging structure of crank case of four-stroke engine Download PDFInfo
- Publication number
- CN100383365C CN100383365C CNB2006100386981A CN200610038698A CN100383365C CN 100383365 C CN100383365 C CN 100383365C CN B2006100386981 A CNB2006100386981 A CN B2006100386981A CN 200610038698 A CN200610038698 A CN 200610038698A CN 100383365 C CN100383365 C CN 100383365C
- Authority
- CN
- China
- Prior art keywords
- oil
- gas
- valve
- cylinder head
- crankcase
- 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.)
- Active
Links
Images
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
- F01M13/04—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
-
- 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
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
The present invention relates to a gas exchanging structure of a crankshaft case of a four-stroke engine, which belongs to the technical field of power devices. The gas exchanging structure has the main structure that the top of a cylinder cover cap is provided with an oil and gas separating cavity which is communicated with a gas valve operating chamber by a communicating path. The oil and gas separating cavity is connected with a baffle to form an oil and gas separating chamber. The upper part of the oil and gas separating chamber is provided with a one-way valve. The communicating path is positioned on the upper part of the one-way valve. The communicating path has an inclined hole, the other end of the communicating path is communicated with a cylinder cover and enters a gas inlet pipe by the communicating path of the cylinder cover. An oil returning hole is arranged between the inclined hole of the communicating path and the oil and gas separating chamber. The present invention has the advantage of simple, compact and reasonable structure. When the engine operates, the residual gas in the crankshaft case can be sucked into the gas inlet pipe by the communicating path to enter a combustion chamber for combustion. Meanwhile, the effect of separating the oil and the mist to prevent lubricating oil from entering a gas sucking system and an excellent oil returning effect are obtained. The integral structure is arranged in the engine. No size is increased, and space efficiency is excellent. The light weight of the engine is guaranteed.
Description
Technical field
The present invention relates to a kind of air-exchanging structure of crank case of four stroke engine, specifically when motor moves, can stop lubricant oil to enter suction system effectively, played good mist of oil separating effect again simultaneously, belong to field of power equipment technology.
Background technique
During engine operation, bleed in the crankcase in a part of mixed air in the cylinder and the gap of waste gas between piston ring and cylinder wall, to make machine oil thinning after wherein fuel-steam condenses, shorten the life time of machine oil, waste gas can play strong corrosive action to part, cause the wearing and tearing of part, pressure raises and causes engine oil leakage; In order to prolong the life time of machine oil, reduce the wearing and tearing of part, prevent engine oil leakage, must displacement gas mechanism be discharged by waste gas.Air-exchanging structure must be discharged waste gas effectively and can well mist of oil be separated again, prevents that lubricant oil from entering suction system; Lubricant oil will have good isolation effect when this structure present position and motor operation, ventilation mechanism does not often have good oil return effect in general motor, and one-way valve adopts sheet type, this one-way valve often weares and teares when long-term the use, and is aging, distortion, or follow the string, appearance is not opened, or does not reset, and causes engine oil leakage.
In prior art, in the common ventilation chamber structure, internal-combustion engine is installed subsidiary engine by the subsidiary engine carriage at the sidewall of cylinder block, forms ventilation chamber between the sidewall of cylinder block and subsidiary engine carriage.This structure need increase component, and complex structure is difficult for realizing lightweight.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby provide a kind of and can provide a compactness to motor, reliable air-exchanging structure, when motor moves, can be with residual gas in the crankcase through communication passage, the suction suction tude enters the firing chamber and burns, and has played the mist of oil separation simultaneously again and has stoped lubricant oil to advance people's suction system and good oil return effect; Integral arrangement is at engine interior, and no virtually any size increases, and space efficiency is good, has guaranteed the air-exchanging structure of crank case of the light-weighted four stroke engine of motor.
Main solution of the present invention is achieved in that
The body of motor of the present invention is combined by casing and cylinder liner and cylinder head, engine crankcase is to be combined by engine housing and crankcase cover, rotatable support bent axle is set in crankcase, lubricant oil is housed in the crankcase, the valve control cab is to be combined by cylinder head and valve mechanism cover, valve control cab and crankcase UNICOM, piston is connected on the crank pin of bent axle by connecting rod, cylinder head and firing chamber UNICOM, suction system is bearing on the cylinder head and carries out UNICOM with suction port, valve mechanism cover is positioned at cylinder head top, the valve mechanism cover top is provided with the Oil-gas Separation chamber, the Oil-gas Separation chamber surrounds the labyrinth by three labyrinth shape wall-formings, by through channel UNICOM valve control cab, the Oil-gas Separation chamber connects dividing plate, form the Oil-gas Separation chamber, top, Oil-gas Separation chamber is provided with one-way valve, one-way valve is installed in the unidirectional valve opening, feature is the top that passage is positioned at one-way valve, passage is provided with slope hole, and slope hole is sealed its end the other end and cylinder head UNICOM by stopping up, enter suction tude by the cylinder head communication passage, be provided with spill port between slope hole on the passage and Oil-gas Separation chamber.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; When motor moves, can be with residual gas in the crankcase through communication passage, the suction suction tude enters the firing chamber and burns, and has played the mist of oil separation simultaneously again and has stoped lubricant oil to advance people's suction system and good oil return effect; Integral arrangement is at engine interior, and no virtually any size increases, and space efficiency is good, has guaranteed the motor lightweight.
Description of drawings
Fig. 1 is a structure longitudinal section of the present invention.
Fig. 2 is the cross-sectional figure of structure of the present invention.
Fig. 3 be the cross-sectional position A of structure of the present invention to worm's eye view.
Fig. 4 is a structure position A-A sectional view of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention is mainly by the body 1 of motor, crankcase cover 2, valve mechanism cover 3, bent axle 4, valve control cab 5, crankcase 6, engine housing 7, cylinder liner 8, cylinder head 9, piston 10, connecting rod 11, connnecting rod big end connecting rod cap 12, spindle 13, ball bearing 15,16, suction port 17, relief opening 18, firing chamber 19, suction system 20, air-strainer 21, Carburetor 22, Oil-gas Separation chamber 23, screw 24, dividing plate 25, Oil-gas Separation chamber 26, one-way valve 27, unidirectional valve opening 28, valve seat 29, baton round 30, straight pin 31, seal ring 32, valve mechanism cover passage 33, spill port 34, lubricant oil 35, labyrinth shape wall-forming 36, passage 37, slope hole 38, stop up 39, hollow locating stud 40, cylinder head communication passage 41, suction tude 14 compositions such as grade.
The invention provides a kind of four stroke engine, the body 1 of motor is combined by casing 7 and cylinder liner 8 and cylinder head 9.This engine crankcase 6 is to be combined by engine housing 7 and crankcase cover 2, and rotatable support bent axle 4 is set in this crankcase 6, in this crankcase 6 lubricant oil 35 is housed.When engine operation, this bent axle 4 is in level, and valve control cab 5 is to be combined by cylinder head 9 and valve mechanism cover 3, this valve control cab 5 and crankcase 6 UNICOMs, and piston 10 is connected on the crank pin of bent axle 4 by connecting rod 11.Get rid of spindle 13 on the connnecting rod big end connecting rod cap 12 and be used for disperseing lubricant oil 35 in crankcase 6, it and connecting rod cap 12 integral body are made.The two ends of bent axle 4 are supported by ball bearing 15 and bearing support 16.Cylinder head 9 comprises suction port 17 and relief opening 18, they can with firing chamber 19 UNICOMs.Suction system 20 comprises air-strainer 21 and Carburetor 22, and suction system 20 is supported on the cylinder head 9, in order to carry out UNICOM with suction port 17.Valve mechanism cover 3 is positioned at cylinder head 9 tops, these valve mechanism cover 3 tops are provided with an Oil-gas Separation chamber 23, and this chamber surrounds the labyrinth by three labyrinth shape wall-formings 36, and by through channel 37 UNICOM's valve control cabs 5, this Oil-gas Separation chamber 23 connects dividing plate 25 through screw 24, forms Oil-gas Separation chamber 26.One-way valve 27 is equipped with on these 26 tops, Oil-gas Separation chamber, and this one-way valve 27 is installed in the unidirectional valve opening 28, and one-way valve 27 is by valve seat 29, baton round 30, and straight pin 31 and seal ring 32 are formed.Baton round 30 is contained in the valve seat 29, passage 33 is positioned at the top of one-way valve 27, passage is a slope hole 38 for 33 1 sections, this slope hole one end is sealed its end by stopping up 39, the other end enters suction tude 14 by a hollow locating stud 40 and cylinder head 9 UNICOMs by cylinder head communication passage 41, and a spill port 34 is bored in 26 of passage 33 slope holes 37 and Oil-gas Separation chambers, these spill port 34 separable lubricant oil prevent that lubricant oil from entering suction system.
Working principle of the present invention and working procedure:
When the present invention drives bent axle 4 rotations when engine piston 10, getting rid of spindle 13 by connecting rod splashes out parts of lubricating oil 35, arrive air door operation chamber 5 with the mist of oil form through crankcase 6, ventilation gas appears in the crankcase 6 simultaneously, this ventilation gas enters valve control cab 5 by crankcase 6, enter Oil-gas Separation chamber 26 through through channel 37, along with piston 10 to-and-fro motion, produce pressure pulse in the crankcase 6, the baton round 30 of one-way valve 27 is opened, ventilation gas enters valve mechanism cover communication passage 33, enters cylinder head communication passage 41 through valve mechanism cover communication passage 33 by hollow locating stud 40 and sucks suction tude 14, enters firing chamber 19 through intake valve.When the ventilation gas through the Oil-gas Separation chamber, labyrinth shape wall-forming 36 carries out the mist of oil separation with oil gas in it, again through through channel 37 to returning crankcase 6, ventilation gas enters and carries out a mist of oil after the valve mechanism cover communication passage 33 again and separate and return Oil-gas Separation chamber 26 through spill port 34, thereby has strengthened the mist of oil separating property; One-way valve 27 is installed in the unidirectional valve opening 28 in addition, seal ring 32 can stop mist of oil to enter valve mechanism cover communication passage 33 reliably when one-way valve 27 is closed, baton round 30 is the energy flexible motion in valve seat 29, and can prevent that sucking too much gas by suction system 20 enters crankcase 6 at self-return under the action of gravity.
In a word, this structural configuration is at engine interior, and no virtually any size increases, and residual gas in the crankcase can be sucked suction tude through communication passage on the one hand, enters the firing chamber and burns.Played simultaneously the mist of oil separation again and stoped lubricant oil to advance people's suction system and good oil return effect, space efficiency is good, can be applicable to any four stroke engine.
Claims (3)
1. the air-exchanging structure of crank case of a four stroke engine, engine body (1) comprises casing (7) and cylinder liner (8) and cylinder head (9), engine crankcase (6) is combined by engine housing (7) and crankcase cover (2), bent axle (4) is set in crankcase (6), lubricant oil (35) is housed in the crankcase (6), valve control cab (5) is made up of cylinder head (9) and valve mechanism cover (3), valve control cab (5) and crankcase (6) UNICOM, piston (10) is connected on the crank pin of bent axle (4) by connecting rod (11), cylinder head (9) and firing chamber (19) UNICOM, suction system (20) is bearing in cylinder head (9) and goes up and suction port (17) UNICOM, valve mechanism cover (3) is positioned at cylinder head (9) top, valve mechanism cover (3) top is provided with Oil-gas Separation chamber (23), passage (37) UNICOM's valve control cab (5), Oil-gas Separation chamber (23) connects dividing plate (25), form Oil-gas Separation chamber (26), top, Oil-gas Separation chamber (26) is provided with one-way valve (27), one-way valve (27) is installed in the unidirectional valve opening (28), it is characterized in that passage (33) is positioned at the top of one-way valve (27), passage (33) is provided with slope hole (38), slope hole (38) is sealed its end by stopping up (39), the other end and cylinder head (9) UNICOM, enter suction tude (14) by cylinder head communication passage (41), be provided with spill port (34) between the slope hole (38) on the passage (33) and Oil-gas Separation chamber (26).
2. the air-exchanging structure of crank case of four stroke engine according to claim 1 is characterized in that described Oil-gas Separation chamber (23) surrounds the labyrinth by three labyrinth shape wall-formings (36).
3. the air-exchanging structure of crank case of four stroke engine according to claim 1, it is characterized in that described one-way valve (27) is made up of valve seat (29), baton round (30), straight pin (31) and seal ring (32), baton round (30), seal ring (32) are contained in the valve seat (29).
Priority Applications (8)
| 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 |
| EP07702208A EP1995418B1 (en) | 2006-03-08 | 2007-01-25 | Breather device of crankcase for 4-cycle engine |
| AT07702208T ATE555277T1 (en) | 2006-03-08 | 2007-01-25 | BREATHER DEVICE FOR THE CRANKCASE OF A FOUR-STROKE ENGINE |
| AU2007222812A AU2007222812B2 (en) | 2006-03-08 | 2007-01-25 | Breather device of crankcase for 4-cycle engine |
| PCT/CN2007/000290 WO2007101387A1 (en) | 2006-03-08 | 2007-01-25 | Breather device of crankcase for 4-cycle engine |
| US12/281,800 US20090084342A1 (en) | 2006-03-08 | 2007-01-25 | Crankcase Scavenging Mechanism for a Four-Stroke Engine |
| TR2008/06687T TR200806687T1 (en) | 2006-03-08 | 2007-01-25 | Crank box cleaning mechanism for a four-stroke engine |
| ES07702208T ES2386019T3 (en) | 2006-03-08 | 2007-01-25 | Crankcase ventilation device for a four-stroke engine |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1818355A CN1818355A (en) | 2006-08-16 |
| CN100383365C true CN100383365C (en) | 2008-04-23 |
Family
ID=36918522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100386981A Active CN100383365C (en) | 2006-03-08 | 2006-03-08 | Air-exchanging structure of crank case of four-stroke 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280704B (en) * | 2008-05-06 | 2013-07-31 | 孙鹤鸣 | Arbitrary overturn four-stroke cycle engine |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE529496C2 (en) * | 2006-11-27 | 2007-08-28 | Atlas Copco Constr Tools Ab | Two-stroke internal combustion (IC) engine for use in e.g. hand-held power tool, has air duct, which is connected to air intake on cylinder and to crankcase via separator for cleaning air from lubricating oil and fuel from crankcase |
| JP5463111B2 (en) * | 2009-09-24 | 2014-04-09 | 株式会社マキタ | Lubricating device for portable 4-cycle engine |
| CN101943078A (en) * | 2010-08-24 | 2011-01-12 | 重庆长安汽车股份有限公司 | Cylinder head of internal combustion engine |
| CN102192041B (en) * | 2010-12-31 | 2016-08-17 | 宁波易能动力科技有限公司 | Handheld tool quartastroke engine |
| JP2013104357A (en) * | 2011-11-14 | 2013-05-30 | Makita Corp | Lubrication apparatus for four-stroke engine |
| EP2937533B1 (en) * | 2014-04-24 | 2017-12-20 | BRUSS Sealing Systems GmbH | Ventilation module for a combustion engine |
| 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 |
| CN104791048A (en) * | 2015-03-17 | 2015-07-22 | 浙江亚特电器有限公司 | Residual gas utilization device for engine lubricating system |
| 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 |
| CN114542239A (en) * | 2022-03-09 | 2022-05-27 | 广西玉柴机器股份有限公司 | Engine with respirator low in engine oil content |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499581Y (en) * | 2001-10-12 | 2002-07-10 | 常柴股份有限公司 | Aspirator of diesel engine gear room |
| CN1607320A (en) * | 2003-10-15 | 2005-04-20 | 马勒-特耐株式会社 | Oil separator combined with cylinder head cover |
| JP2005201080A (en) * | 2004-01-13 | 2005-07-28 | Toyota Industries Corp | Cylinder head cover |
| CN2727405Y (en) * | 2004-09-15 | 2005-09-21 | 重庆宗申技术开发研究有限公司 | Breathing device for internal combustion engine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60192821A (en) * | 1984-03-15 | 1985-10-01 | Honda Motor Co Ltd | Crank case ventilation device for internal-combustion engine |
| US5183075A (en) * | 1986-04-12 | 1993-02-02 | Stein Guenter | Check 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 |
| US5129371A (en) * | 1991-09-03 | 1992-07-14 | Saturn Corporation | Cam cover oil separator for crankcase ventilation |
| US5829952A (en) * | 1995-05-19 | 1998-11-03 | Shadden; Darrel W. | Check valve with a reversible valve ball and seat |
| JP3143777B2 (en) * | 1996-03-19 | 2001-03-07 | 本田技研工業株式会社 | Work four-stroke engine |
| JP3866394B2 (en) * | 1997-10-22 | 2007-01-10 | 本田技研工業株式会社 | Engine breather equipment |
| US6412478B1 (en) * | 2001-01-02 | 2002-07-02 | Generac Power Systems, Inc. | Breather for internal combustion engine |
| JP3967552B2 (en) * | 2001-02-19 | 2007-08-29 | 本田技研工業株式会社 | Gas-liquid separator for engines |
| ATE531954T1 (en) * | 2005-05-20 | 2011-11-15 | Yamaha Motor Co Ltd | CONNECTING ROD WITH A SPLIT CONNECTING ROD HEAD |
| US7789077B2 (en) * | 2006-04-11 | 2010-09-07 | Honda Motor Co., Ltd. | Crankcase of internal combustion engine |
| US7699029B2 (en) * | 2007-07-26 | 2010-04-20 | Cummins Filtration Ip, Inc. | Crankcase ventilation system with pumped scavenged oil |
-
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 TR TR2008/06687T patent/TR200806687T1/en unknown
- 2007-01-25 ES ES07702208T patent/ES2386019T3/en active Active
- 2007-01-25 WO PCT/CN2007/000290 patent/WO2007101387A1/en active Application Filing
- 2007-01-25 AT AT07702208T patent/ATE555277T1/en active
- 2007-01-25 US US12/281,800 patent/US20090084342A1/en not_active Abandoned
- 2007-01-25 EP EP07702208A patent/EP1995418B1/en not_active Not-in-force
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2499581Y (en) * | 2001-10-12 | 2002-07-10 | 常柴股份有限公司 | Aspirator of diesel engine gear room |
| CN1607320A (en) * | 2003-10-15 | 2005-04-20 | 马勒-特耐株式会社 | Oil separator combined with cylinder head cover |
| JP2005201080A (en) * | 2004-01-13 | 2005-07-28 | Toyota Industries Corp | Cylinder head cover |
| CN2727405Y (en) * | 2004-09-15 | 2005-09-21 | 重庆宗申技术开发研究有限公司 | Breathing device for internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280704B (en) * | 2008-05-06 | 2013-07-31 | 孙鹤鸣 | Arbitrary overturn four-stroke cycle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1995418A1 (en) | 2008-11-26 |
| EP1995418B1 (en) | 2012-04-25 |
| ES2386019T3 (en) | 2012-08-07 |
| EP1995418A4 (en) | 2011-01-05 |
| AU2007222812B2 (en) | 2011-06-30 |
| AU2007222812A1 (en) | 2007-09-13 |
| TR200806687T1 (en) | 2009-01-21 |
| US20090084342A1 (en) | 2009-04-02 |
| WO2007101387A1 (en) | 2007-09-13 |
| ATE555277T1 (en) | 2012-05-15 |
| CN1818355A (en) | 2006-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100383365C (en) | Air-exchanging structure of crank case of four-stroke engine | |
| JP5997790B2 (en) | Lubricating device for internal combustion engine | |
| CN101270683A (en) | Gas oil separation structure of internal combustion engine crankcase ventilation system | |
| CN2898317Y (en) | Ventilating mechanism of four-stroke engine | |
| CN101865008B (en) | Pressure control valve type engine crankcase ventilator | |
| US6769391B1 (en) | Four-stroke engine with an oil spray generating assembly for lubrication | |
| CN201610778U (en) | Structure of air exchange device of engine | |
| CN200999639Y (en) | Crankshaft case air changing structure of four-stroke cycle engine | |
| CN201635791U (en) | Small-sized four-stroke gasoline engine | |
| CN101280704B (en) | Arbitrary overturn four-stroke cycle engine | |
| CN201963396U (en) | Four-stroke internal combustion engine for handheld tool | |
| CN201635790U (en) | Portable-type four-stroke gasoline engine | |
| JPH11107734A (en) | Blow-by gas recirculation device for outboard engine | |
| KR101512925B1 (en) | Handheld four-stroke engine lubricating system | |
| CN201496119U (en) | Diaphragm pump lubricating four-stroke-cycle 360-degree turning gasoline engine | |
| CN203081525U (en) | Handheld engine oil lubricating system for four-stroke gasoline engine | |
| TWI407008B (en) | Intake and exhaust disc piston two-stroke three-cylinder petrol engine | |
| CN215057746U (en) | Four-stroke engine containing novel oil way structure | |
| CN201092872Y (en) | Gas oil separation structure for internal combustion engine crankcase ventilation system | |
| CN112555022B (en) | Four-to-two moving cylinder two-stroke engine | |
| ITMI20011625A1 (en) | TWO STROKE ENGINE WITH INTERNAL COMBUSTION AND DIRECT INJECTION PNEUMATICALLY ASSISTED | |
| CN113374576A (en) | Four-stroke engine containing novel oil way structure | |
| WO2008092295A1 (en) | A lubricating system for a free rotation small-size four-stroke gasoline engine | |
| CN105332761B (en) | The lubricating system of hand four stroke engine | |
| JPH0247212Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Air-exchanging structure of crank case of four-stroke engine Effective date of registration: 20190426 Granted publication date: 20080423 Pledgee: Bank of Communications Ltd Wuxi branch Pledgor: Kaipu Power Co., Ltd.,Wuxi Registration number: 2019320010018 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191011 Granted publication date: 20080423 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20201120 Granted publication date: 20080423 |