WO2007101387A1 - Ventilateur de carter pour moteur à 4 temps - Google Patents

Ventilateur de carter pour moteur à 4 temps Download PDF

Info

Publication number
WO2007101387A1
WO2007101387A1 PCT/CN2007/000290 CN2007000290W WO2007101387A1 WO 2007101387 A1 WO2007101387 A1 WO 2007101387A1 CN 2007000290 W CN2007000290 W CN 2007000290W WO 2007101387 A1 WO2007101387 A1 WO 2007101387A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
crankcase
oil
passage
chamber
Prior art date
Application number
PCT/CN2007/000290
Other languages
English (en)
Chinese (zh)
Inventor
Henglin Xiao
Original Assignee
Wuxi Kipor Power Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Kipor Power Co., Ltd. filed Critical Wuxi Kipor Power Co., Ltd.
Priority to AU2007222812A priority Critical patent/AU2007222812B2/en
Priority to EP07702208A priority patent/EP1995418B1/fr
Priority to AT07702208T priority patent/ATE555277T1/de
Priority to US12/281,800 priority patent/US20090084342A1/en
Priority to ES07702208T priority patent/ES2386019T3/es
Publication of WO2007101387A1 publication Critical patent/WO2007101387A1/fr

Links

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

Definitions

  • the invention relates to a crankcase ventilation structure of a four-stroke engine, in particular, when the engine is running, the lubricant can be effectively prevented from entering the suction system, and at the same time, a good oil mist separation effect is obtained, belonging to the power device.
  • Technical field when the engine is running, the lubricant can be effectively prevented from entering the suction system, and at the same time, a good oil mist separation effect is obtained, belonging to the power device.
  • the ventilation structure must be able to effectively discharge the exhaust gas and separate the oil mist well to prevent the lubricating oil from entering the suction system; the position of the structure and the lubricating oil of the engine should have good isolation effect.
  • the ventilating mechanism in the engine often does not have a good oil returning effect, and the one-way valve adopts a thin-plate type. This one-way valve often wears, ages, deforms, or loses elasticity when it is used for a long time, and cannot be opened, or It is not reset, causing the engine to leak oil.
  • the internal combustion engine is mounted with an auxiliary machine on the side wall of the cylinder block through the auxiliary machine bracket, and a venting chamber is formed between the side wall of the cylinder block and the auxiliary machine bracket.
  • This type of structure requires additional components, and the structure is complicated, making it difficult to achieve weight reduction.
  • the object of the present invention is to overcome the above-mentioned deficiencies, thereby providing a compact and reliable ventilation structure for the engine.
  • the residual gas in the crankcase can be sucked into the intake pipe through the communication passage, and enters the combustion.
  • the chamber is burned, and at the same time, the oil mist separation prevents the lubricating oil from entering the suction system and has a good oil returning effect; the overall structure is arranged inside the engine, without any increase in size, space efficiency is good, and the engine is lightened.
  • the crankcase ventilation structure of the stroke engine is provided.
  • the body 1 of the engine of the present invention is composed of a casing 7 and a cylinder liner 8 and a cylinder head 9 which are combined by an engine casing 7 and a crankcase cover 2, and are rotatable in the crankcase 6.
  • the crankcase 6 is filled with lubricating oil 35
  • the valve operating chamber 5 is composed of a cylinder head 9 and a cylinder head cover 3
  • the valve operating chamber 5 is in communication with the crankcase 6
  • the piston 10 is passed
  • the connecting rod 11 is connected to the crank pin of the crankshaft 4
  • the cylinder head 9 is in communication with the combustion chamber 19
  • the air suction system 20 is supported on the cylinder head 9 in communication with the air inlet port 17, and the cylinder head cover 3 is located at the upper portion of the cylinder head 9, characteristic
  • the top of the cylinder head cover 3 is provided with an oil and gas separation chamber 23, and the oil and gas separation chamber 23 is surrounded by three labyrinth forming walls 36 to form a labyrinth.
  • the through passage 37 is connected to the damper operating chamber 5, and the oil and gas separation chamber 23 is connected to the partition 25 to form an oil and gas separation chamber.
  • the upper part of the oil and gas separation chamber 26 is provided with a unidirectional width 27
  • the check valve 27 is installed in the check valve hole 28
  • the passage 33 is located at the upper portion of the check valve 27, and the passage 33 is provided with an inclined hole 38, and the inclined hole 38 is passed
  • the plug 39 closes its end, and the other end communicates with the cylinder head, and enters the intake pipe 14 through the cylinder head communication passage 41.
  • the oil return hole 34 is formed between the inclined hole 38 in the passage 33 and the oil separation chamber 26.
  • the invention has the advantages of simple structure, compactness and reasonableness; when the engine is running, the residual gas in the crankcase can be sucked into the intake pipe through the communication passage, and enters the combustion chamber for combustion, and at the same time acts as an oil mist separation to prevent the lubricating oil from entering the suction system. And a good oil return effect; the overall structure is arranged inside the engine, without any increase in size, space efficiency is good, to ensure the weight of the engine.
  • Figure 1 is a longitudinal sectional view showing the structure of the present invention
  • Figure 2 is a cross-sectional view showing the structure of the present invention
  • Figure 3 is a bottom plan view of the cross-sectional portion A of the structure of the present invention.
  • Figure 4 is a cross-sectional view showing a structural portion A - A of the present invention.
  • the invention mainly consists of an engine body 1, a crankcase cover 2, a cylinder head cover 3, a crankshaft 4, a valve operating room 5, a crankcase 6, an engine casing 7, a cylinder liner 8, a cylinder head 9, a piston 10, and a connecting rod 11 , connecting rod big head connecting rod cover 12, oil needle 13, ball bearing 15, 16 , air inlet 17, exhaust port 18, combustion chamber 19, suction system 20, air filter 21, carburetor 22, oil and gas Separation chamber 23, screw 24, partition 25, oil separation chamber 26, check valve 27, check valve hole 28, valve seat 29, plastic ball 30, cylindrical pin 31, seal ring 32, cylinder head cover passage 33, back
  • the oil hole 34, the lubricating oil 35, the labyrinth forming wall 36, the passage 37, the inclined hole 38, the clogging 39, the hollow positioning pin 40, the cylinder head communication passage 41, the intake pipe 14, and the like are composed.
  • the present invention provides a four-stroke engine in which the body 1 of the engine is assembled from a casing 7 and a cylinder liner 8 and a cylinder head 9.
  • the engine crankcase 6 is composed of an engine casing 7 and a crankcase cover 2 Combinedly, the crankcase 6 is provided with a rotatable supporting crankshaft 4, and the crankcase 6 is provided with a lubricating oil 35.
  • the crankshaft 4 is in a horizontal state
  • the valve operating chamber 5 is composed of a cylinder head 9 and a cylinder head cover 3
  • the valve operating chamber 5 is in communication with the crankcase 6, and the piston 10 is connected to the crankshaft through the connecting rod 11. 4 on the crank pin.
  • the squeegee needle 13 on the connecting rod head connecting rod cover 12 is used to disperse the lubricating oil 35 in the crankcase 6, which is integrally formed with the connecting rod cover 12. Both ends of the crankshaft 4 are supported by the ball bearing 15 and the bearing housing 16.
  • the cylinder head 9 includes an air inlet 17 and an exhaust port 18 which are in communication with the combustion chamber 19.
  • the air suction system 20 includes an air cleaner 21 and a carburetor 22, and the air suction system 20 is supported on the cylinder head 9 for communicating with the air inlet port 17.
  • the cylinder head cover 3 is located at the upper part of the cylinder head cover 9.
  • the top of the cylinder head cover 3 is provided with an oil and gas separation chamber 23, which is surrounded by three labyrinth forming walls 36 to form a labyrinth, and is connected by a through passage 37 to the damper operating chamber 5, the oil and gas separation chamber 23 is connected to the partition plate 25 via the screw 24 to form the oil and gas separation chamber 26.
  • the upper portion of the oil separation chamber 26 is provided with a check valve 27 which is installed in the check valve hole 28, and the check valve 27 is composed of a valve seat 29, a plastic ball 30, a cylindrical pin 31 and a seal ring 32.
  • the plastic ball 30 is mounted in the valve seat 29, the passage 33 is located at the upper portion of the one-way valve 27, and the passage 33-section is an inclined hole 38.
  • the pin 40 is in communication with the cylinder head 9, and enters the intake pipe 14 through the cylinder head communication passage 41.
  • the oil hole 34 is drilled between the inclined hole 37 of the passage 33 and the oil separation chamber 26, and the oil return hole 34 can separate the lubricating oil to prevent lubricating oil. Enter the inhalation system.
  • the inner labyrinth forming wall 36 separates the oil and gas into oil mist, passes through the through passage 37 to return to the crankcase 6, and the ventilation gas enters the cylinder head cover communication passage 33, and then performs oil mist separation. Returning to the oil separation chamber 26 via the oil return hole 34, thereby enhancing the oil mist separation performance; further, the check valve 27 is installed in the check valve hole 28, and the seal ring 32 can reliably prevent the oil mist from entering when the check valve 27 is closed.
  • the cylinder head cover communicates with the passage 33, and the plastic ball 30 can flexibly move in the valve seat 29, and can automatically return to the position under the action of gravity, preventing excessive gas from being sucked into the crankcase 6 by the suction system 20.
  • N2007/000290 the structure is arranged inside the engine without any increase in size.
  • the residual gas in the crankcase can be sucked into the intake pipe through the communication passage and enter the combustion chamber for combustion.
  • the oil mist separation prevents the lubricating oil from entering the suction system and has a good oil returning effect.
  • the space efficiency is good and can be applied to any four-stroke engine.

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

L'invention porte sur un ventilateur de carter pour moteur à 4 temps. Une chambre de distribution (5) est définie par une tête de cylindre et une calotte de cylindre (3) et communique avec un carter (6). La calotte de cylindre (3) est placée sur la partie supérieure de la tête de cylindre (9). Une cavité (23) séparant le gaz de l'huile est formée dans la partie supérieure de la tête de cylindre (9). Un passage (37) communique avec la chambre de distribution (5). Une plaque de séparation (25) est placée dans la cavité (25) de façon à former une chambre de séparation du gaz et de l'huile (26). Une soupape unidirectionnelle (27), placée au-dessus de la chambre de séparation (26), est montée dans un orifice (28) de celle-ci. Un passage (33), formé au-dessus de la soupape undirectionnelle (27), comporte un orifice incliné (38). Cet orifice incliné (38) est bloqué à l'une de ses extrémités par un bouchon (39) et à son autre extrémité est relié par un passage de liaison (41) formé dans la tête de cylindre (9). La passage de liaison (41) communique avec une tubulure d'admission (14). Un orifice de retour d'huile (34) est formé entre l'orifice incliné (38) du passage (33) et la chambre de séparation du gaz et de l'huile (26),
PCT/CN2007/000290 2006-03-08 2007-01-25 Ventilateur de carter pour moteur à 4 temps WO2007101387A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2007222812A AU2007222812B2 (en) 2006-03-08 2007-01-25 Breather device of crankcase for 4-cycle engine
EP07702208A EP1995418B1 (fr) 2006-03-08 2007-01-25 Ventilateur de carter pour moteur à 4 temps
AT07702208T ATE555277T1 (de) 2006-03-08 2007-01-25 Entlüftervorrichtung für das kurbelgehäuse eines viertaktmotors
US12/281,800 US20090084342A1 (en) 2006-03-08 2007-01-25 Crankcase Scavenging Mechanism for a Four-Stroke Engine
ES07702208T ES2386019T3 (es) 2006-03-08 2007-01-25 Dispositivo de ventilación de cárter para un motor de cuatro tiempos

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006100386981A CN100383365C (zh) 2006-03-08 2006-03-08 四冲程发动机的曲轴箱换气结构
CN200610038698.1 2006-03-08

Publications (1)

Publication Number Publication Date
WO2007101387A1 true WO2007101387A1 (fr) 2007-09-13

Family

ID=36918522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/000290 WO2007101387A1 (fr) 2006-03-08 2007-01-25 Ventilateur de carter pour moteur à 4 temps

Country Status (8)

Country Link
US (1) US20090084342A1 (fr)
EP (1) EP1995418B1 (fr)
CN (1) CN100383365C (fr)
AT (1) ATE555277T1 (fr)
AU (1) AU2007222812B2 (fr)
ES (1) ES2386019T3 (fr)
TR (1) TR200806687T1 (fr)
WO (1) WO2007101387A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE529496C2 (sv) * 2006-11-27 2007-08-28 Atlas Copco Constr Tools Ab Tvåtaktsförbränningsmotor
CN101280704B (zh) * 2008-05-06 2013-07-31 孙鹤鸣 任意翻转四冲程发动机
JP5463111B2 (ja) * 2009-09-24 2014-04-09 株式会社マキタ 携帯型４サイクルエンジンの潤滑装置
CN101943078A (zh) * 2010-08-24 2011-01-12 重庆长安汽车股份有限公司 一种内燃机的气缸盖
CN102192041B (zh) * 2010-12-31 2016-08-17 宁波易能动力科技有限公司 手持工具用四冲程内燃机
JP2013104357A (ja) * 2011-11-14 2013-05-30 Makita Corp ４ストロークエンジンの潤滑装置
EP2937533B1 (fr) * 2014-04-24 2017-12-20 BRUSS Sealing Systems GmbH Module de purge pour un moteur à combustion
CN104500176A (zh) * 2014-12-29 2015-04-08 无锡华源凯马发动机有限公司 一种单缸风冷柴油机气缸盖罩呼吸器结构
CN104791048A (zh) * 2015-03-17 2015-07-22 浙江亚特电器有限公司 一种发动机润滑系统余气利用装置
CN109763875A (zh) * 2019-01-04 2019-05-17 山东华盛农业药械有限责任公司 汽油机润滑系统的油气分离装置

Citations (7)

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Publication number Priority date Publication date Assignee Title
US4667647A (en) * 1984-03-15 1987-05-26 Honda Giken Kogyo Kabushiki Kaisha Crankcase ventilating system and method of removing oil mist from gas in the system
EP0341770A2 (fr) 1988-05-13 1989-11-15 LOMBARDINI Fabbrica Italiana Motori S.p.A. Cache-culbuteurs de moteur à combustion interne avec un dispositif d'anti-aspiration de l'huile de graissage
US5129371A (en) * 1991-09-03 1992-07-14 Saturn Corporation Cam cover oil separator for crankcase ventilation
EP0911496A1 (fr) * 1997-10-22 1999-04-28 Honda Giken Kogyo Kabushiki Kaisha Dispositif d'aération pour un moteur à combustion interne
US20020083934A1 (en) * 2001-01-02 2002-07-04 Ruehlow Gerald C. Breather for internal combustion engine
EP1233155A1 (fr) * 2001-02-19 2002-08-21 Honda Giken Kogyo Kabushiki Kaisha Separateur air/huile pour moteur à combustion
EP1524414A2 (fr) * 2003-10-15 2005-04-20 Mahle Tennex Corporation Séparateur d'huile intégré dans le couvre culasse

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US5183075A (en) * 1986-04-12 1993-02-02 Stein Guenter Check valve
US5829952A (en) * 1995-05-19 1998-11-03 Shadden; Darrel W. Check valve with a reversible valve ball and seat
JP3143777B2 (ja) * 1996-03-19 2001-03-07 本田技研工業株式会社 作業用四サイクルエンジン
CN2499581Y (zh) * 2001-10-12 2002-07-10 常柴股份有限公司 柴油机齿轮室的呼吸器
JP2005201080A (ja) * 2004-01-13 2005-07-28 Toyota Industries Corp シリンダヘッドカバー
CN2727405Y (zh) * 2004-09-15 2005-09-21 重庆宗申技术开发研究有限公司 内燃机呼吸装置
US7757584B2 (en) * 2005-05-20 2010-07-20 Yamaha Hatsudoki Kabushiki Kaisha Connecting rod and internal combustion engine and automotive vehicle incorporating the same
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667647A (en) * 1984-03-15 1987-05-26 Honda Giken Kogyo Kabushiki Kaisha Crankcase ventilating system and method of removing oil mist from gas in the system
EP0341770A2 (fr) 1988-05-13 1989-11-15 LOMBARDINI Fabbrica Italiana Motori S.p.A. Cache-culbuteurs de moteur à combustion interne avec un dispositif d'anti-aspiration de l'huile de graissage
US5129371A (en) * 1991-09-03 1992-07-14 Saturn Corporation Cam cover oil separator for crankcase ventilation
EP0911496A1 (fr) * 1997-10-22 1999-04-28 Honda Giken Kogyo Kabushiki Kaisha Dispositif d'aération pour un moteur à combustion interne
US20020083934A1 (en) * 2001-01-02 2002-07-04 Ruehlow Gerald C. Breather for internal combustion engine
EP1233155A1 (fr) * 2001-02-19 2002-08-21 Honda Giken Kogyo Kabushiki Kaisha Separateur air/huile pour moteur à combustion
EP1524414A2 (fr) * 2003-10-15 2005-04-20 Mahle Tennex Corporation Séparateur d'huile intégré dans le couvre culasse

Also Published As

Publication number Publication date
CN100383365C (zh) 2008-04-23
EP1995418B1 (fr) 2012-04-25
EP1995418A1 (fr) 2008-11-26
ES2386019T3 (es) 2012-08-07
US20090084342A1 (en) 2009-04-02
AU2007222812A1 (en) 2007-09-13
AU2007222812B2 (en) 2011-06-30
CN1818355A (zh) 2006-08-16
TR200806687T1 (tr) 2009-01-21
ATE555277T1 (de) 2012-05-15
EP1995418A4 (fr) 2011-01-05

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