WO2013185471A1 - 发动机喷油系统 - Google Patents

发动机喷油系统 Download PDF

Info

Publication number
WO2013185471A1
WO2013185471A1 PCT/CN2013/000615 CN2013000615W WO2013185471A1 WO 2013185471 A1 WO2013185471 A1 WO 2013185471A1 CN 2013000615 W CN2013000615 W CN 2013000615W WO 2013185471 A1 WO2013185471 A1 WO 2013185471A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
engine
fuel injection
cylinder
passage
Prior art date
Application number
PCT/CN2013/000615
Other languages
English (en)
French (fr)
Inventor
孔钊
郭宁
陈干
冯可亚
Original Assignee
苏州科瓴精密机械科技有限公司
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 苏州科瓴精密机械科技有限公司 filed Critical 苏州科瓴精密机械科技有限公司
Publication of WO2013185471A1 publication Critical patent/WO2013185471A1/zh

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
    • F01M1/00—Pressure lubrication
    • F01M1/04—Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant feeding devices
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/126—Dry-sumps

Definitions

  • the invention relates to an engine fuel injection system.
  • the technology uses a special oil IT [spinning the rotating blade on the crankshaft to create an oil mist, but in this way the engine is designed to be wider, 3 ⁇ 4 weight, and more expensive.
  • IT spinner the rotating blade on the crankshaft
  • the fuel injection port is usually provided on the crankshaft, resulting in insufficient lubrication of the inner wall of the upper cylinder I of the crankshaft, which affects the lubrication effect.
  • the motive oil is usually stored in the lubricating shovel. After the engine is driven, the lubricating oil enters the crankcase from the lubricating oil tank for lubrication.
  • the current engine is usually equipped with a squirting U on the lltj shaft, and the lubricating oil is injected into the crankshaft through the fuel injection hopper.
  • the defect of the box is that the curve is located at the lower part of the cylinder, and the oil sprayed from the fuel injection port on the crankshaft is insufficient to sufficiently lubricate the cylinder wall.
  • the path from the oil along the oil to the crankcase is complicated, and the processing is inconvenient.
  • the present invention provides an engine fuel injection system capable of lubricating the engine cylinder wall and the crankcase, and simplifying the passage from the lubricating oil tank to the crankshaft, which is convenient for processing and manufacturing, and is realized by the following technical solutions:
  • the - 1' engine fuel injection system including the oil supply passage connecting the oil pan and the crankcase, the lubricating oil enters the crankcase through the oil supply passage, one end of the oil supply passage is the injection II, and the injection oil is 1:1 disposed on the side wall of the cylinder Upper, and below the bottom dead center of the piston.
  • the fuel injection system further includes a cam chamber cover, and the oil supply passage is at least partially disposed on the cam chamber cover.
  • the oil supply passage comprises a - 'check valve.
  • the cam chamber cover is provided with a cavity, and the first-way valve is disposed in the cavity.
  • the oil supply passage is formed by at least a part of the cylinder and the cylinder.
  • the channel formed by the cylinder and the cylinder block is an annular channel.
  • the annular passages on the cylinder and the cylinder bore are respectively provided with an upper slot and a lower slot.
  • the fuel injection system of the present disclosure has a simple structure and at the same time makes the engine have excellent lubrication effect.
  • Figure b is a cross-sectional view of an embodiment of the present invention.
  • Figure 2 is a bottom plan view of the cylinder of the embodiment of the present invention.
  • Fig. 5 i A plan view of the cylinder of the invention of the wood invention.
  • Figure 2 is a bottom plan view of the cylinder block of the embodiment of the present invention.
  • a stroke engine includes a crankcase 1, an oil pan 2, a cam chamber 3, a rocker chamber 4i, and an air filter 6.
  • the oil pan 2 is used for storing lubricating oil.
  • a crankcase 1 which is disposed in the crankcase 1 and is engaged with a piston 7 in the cylinder 8, and the chute 2 and the crankcase 1 are connected through an oil supply passage 21.
  • a distribution chamber 5 is disposed below the crankcase 1. The crankcase and the distribution chamber are connected through the first oil passage 15, and the distribution chamber 5 can perform oil and gas separation. The separated liquid lubricating oil flows into the oil pan 2 through the small hole at the bottom of the separation chamber.
  • the remaining gaseous lubricating oil passes through, and the second oil delivery passage 3 enters the cam chamber 3.
  • the upper part of the cylinder 8 is provided with a rocker chamber 4, and the lubricating oil in the cam chamber 3 passes through the second oil passage: M enters the rocking chamber to lubricate the components in the rocker chamber 4.
  • the lubricating oil in the rocker chamber 4 is returned to the curve m'i through the oil passage 41, and the gas in the rocker '3 ⁇ 4 4 is introduced into the filter 6 through the air passage 46.
  • the lubricating oil in the air filter 6 enters the crankshaft ⁇ 1 through the oil return passage 61.
  • the engine lubrication system (such as the cabinet 2) of the embodiment uses the movement of the piston 7 to alternately change the force production in the crankcase, so that the lubricating oil is in the oil supply passage 21, the first oil passage 15, and the second oil passage. 53.
  • the third oil delivery passage 34, the oil passage 41, the air passage 46, and the return passage 61 circulate to supply lubricating oil to relevant parts of the engine.
  • the fuel injection system 3 ⁇ 4 introduces the lubricating oil stored in the oil pan into the crankcase
  • the fuel injection system includes an oil supply passage 21, and the oil supply passage 21 is provided with an oil suction portion 215 at the end of the oil pan 2 ( As shown in FIG. 1), the oil suction portion 215 can roll in the direction in which the engine is tilted or inverted, and the oil suction portion 215 can suck the lubricating oil in the oil pan 2 at any position.
  • the other end of the supply passage 21 has a fuel injection port 210, and the fuel injection port 210 is on the side wall of the cylinder 8 and is located at the piston 7.
  • crankcase 1 When the pressure in the crankcase 1 is less than the pressure in the oil pan 2, the lubricating oil in the oil pan 2 is injected into the crankcase through the fuel injection port.
  • the oil supply passage 21 includes an annular passage 21 1 , and the annular passage 21 1 is respectively formed by splicing grooves formed on the cylinder 8 and the cylinder block 9 .
  • An upper slot 214 is defined in the groove of the annular passage 1 1 on the cylinder 8, and a lower slot 213 is formed in the 1" slot of the annular passage 21 1 on the cylinder 9, and the oil in the oil passage 21 passes under
  • the slot 213 enters the annular passage 21 1, flows around the annular passage to the upper slot 214, and the lubricating oil flows from the upper slot 214 into the cam cover passage 216, the cam cover passage 216 being a part of the supply passage 21, and the cam cover passage 21 6 S is disposed on the cam chamber cover 31 (shown in FIG. 3), the cam chamber cover 31 covers a cover plate on the cam chamber 3, and the lubricating oil passing through the cam cover passage 216 passes through the cam shaft 502.
  • the hole 1 12 is injected into the crankcase through the fuel injection port.
  • the oil supply passage 21 is further provided with a first check valve 212, and the first direction valve 212 is opened when the crankcase 1 is under a negative pressure, and when the crankcase 1 is under positive pressure.
  • the first check valve 212 is disposed in a cavity 302 coaxial with the through hole 1 12, the cavity 3 () 2 is on the cam chamber cover 1, and the cavity 302 and the through hole 1 12 are both cylindrical. Shaped holes, their diameters are approximately equal. Therefore, when the through hole 1 12 is machined, it is slightly processed to form a cavity 302, and then the first single can be The valve 212 is placed in the cavity 02 ⁇ , which reduces the processing difficulty and facilitates manufacturing.
  • the fuel injection system disclosed by the invention has a low oil cost and can produce a good lubricating effect for the engine cylinder wall and the crankcase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

一种发动机喷油系统包括连通油盘（2）和曲轴箱（1）的供油通道（21），润滑油通过供油通道（21）进入曲轴箱（1），所述供油通道（21）一端为喷油口（210），喷油口（210）设置在气缸（8）侧壁上，且位于活塞（7）下死点下方。该发动机喷油系统能够使发动机气缸壁和曲轴箱得到充分润滑，同时简化从润滑油箱到曲轴的通道，便于加工制造。

Description

发动机喷油系统
技术领
发明涉及一种发动机喷油系统。
背景技
以草木为对象的手提式割草机 （剪切机） 和背负式作业机， 作为驱动作业人员 A已 ^提或 背负宥进行作业的作业机的发动机已经广泛使用传统的二冲程和四冲程小型通用发 动机。 I山于污染物排放规定变的越来越严格， 所以将驱动源从二冲程更换为四冲程发动机的 求^ |¾提 ， 然而， 四冲程发动机具有更复杂的润滑系统， 这使得发动机在以倾斜角度运 行时不^起作用。 润滑成为每个发动机厂商的主耍设计问题， 现在仅有本 ffl公司按 专利技 用于批量生产的可在各种倾斜角度下工作的 W冲程发动机。 该技术采用特殊油 IT [闱 绕安装 曲轴上的旋转刀片以产生油雾， 但是按此方式设计发动机更宽， ¾重， 成本更高。 还有的 动机采用喷出润滑油的方式润滑曲轴箱， 但是喷油口通常设在曲轴上， 导致曲轴上 部气缸 I内壁没有得到充分的润滑汕， 影响润滑效 ¾。
动机润滑油通常储 在润滑汕筘内， 动发动机后， 润滑油从润滑油箱进入曲轴箱 进行润 ， 现冇的发动机通常在 lltj轴上设冇喷汕 U， 润滑油通过喷油 Π喷入曲轴箱， 其缺陷 在于曲 位于气缸下部， 曲轴上的喷油口喷出的油不足以使气缸壁得到充分的润滑。 同时从 润沿油 ^到曲轴箱的路径复杂， 加工不方便。
发明内
本 明为了解决上述问题， 提供了一种发动机喷油系统， 能够使发动机气缸壁和曲轴箱 得到充 润滑， 同时简化从润滑油箱到曲轴的通道， 便于加工制造， 其通过如下技术方案实 现：
- 1'发动机喷油系统， 包括连通油盘和曲轴箱的供油通道， 润滑油通过供油通道进入曲 轴箱， 述供油通道一端为喷油 I I， 喷油 1:1设置在气缸侧壁上， 且位于活塞下死点下方。
优 t¾的， 所述喷油系统还包括凸轮室盖， 所述供油通道至少有部分设置在凸轮室盖上。 优 的， 所述供油通道 括第- '单向阀。
优阵的， 凸轮室盖上设有空腔， 所述第- -单向阀置于空腔内。
优 的， 所述供油通道至少部分巾气缸和气缸^拼接形成。 优 的， 所述气缸和气缸座拼接而成的通道为环形通道。
优 的， 所述气缸和气缸庵上的环形通道分别设有上槽孔和下槽孔。
本 明公幵的喷油系统结构简 ， 同时使发动机 优良的润滑效果。
附图说明
[¾ |J ^：本发明实施例的剖视图。
图 足本发明实施例润滑系统的示意图。
图 b是本发明实施例的剖视图。
图 ^本发明实施例气缸的仰视图。
图 5 i :木发明实施例气缸^的俯视阁。
图 ^是本发明实施例气缸座的仰视图。
具体 施方式
下 tei 'i合具体实施例来对本发明做进一歩说明。
如 S所示为本发明优选实施方式的 冲程发动机， 包括曲轴箱 1、 油盘 2、 凸轮室 3、 摇 臂室 4 i和空滤器 6。 油盘 2用于储存润滑油, 油盘 2上方为曲轴箱 1 , 曲轴 10设置在曲轴箱 1 内并与气缸 8中的活塞 7接合， ，汕盘 2和曲轴箱 1通过供油通道 21连通。 曲轴箱 1 的下 方设有分配室 5， 曲轴箱与分配室通过第一输油通道 15连通， 分配室 5可以进行油气分离， 分离出来的液态润滑油通过分离室底部小孔流入油盘 2， 剩余的气态润滑油通过， 第二输油 通道 3进入凸轮室 3。 气缸 8上部设有摇臂室 4， 凸轮室 3中的润滑油通过第二输油通道: M 进入摇 ¾ 4， 对摇臂室 4内的部件进行润滑。 摇臂室 4内的润滑油通过冋油通道 41回到曲m ' i, 摇臂' ¾ 4内的气体通过通气路 46进入^滤器 6。 空滤器 6中的润滑油通过返油通道 61进入曲轴筘 1。 本实施例的发动机润滑系统 （如阁 2 )， 利用活塞 7的运动使曲轴箱内的 力产^交替变换， 使润滑油在供油通道 21、 第一输油通道 15、 第二输油通道 53、 第三输油 通道 34、 冋油通道 41、 通气路 46、 返油通道 61中循环， 给发动机的相关部位提供润滑油。
发动机的润滑系统中， 喷油系统 ¾将油盘中储存的润滑油引入曲轴箱中， 喷油系统包括 供油通道 21 , 供油通道 21 在油盘 2内的端部设有吸油部 215 (如图 1 ) , 所述吸油部 215能 随着发动机倾斜或倒置的方向滚动， 保证发动机在任何位置吸油部 215都能吸到油盘 2中的 润滑油。 供汕通道 21另一端足喷油口 210 , 喷油 Π 21 0在气缸 8的侧壁上且位于活塞 7下死 点的下方， 也就是说， 活塞 7的上下运动并不会遮挡住喷油口 210， 喷油 U 210—直处于开 I J状态， 从油盘 2中吸取的润滑油从喷油口 210喷入曲轴箱 1。 ¾曲轴箱 1 内的压力小于油 盘 2内的压力时， 油盘 2内的润滑油通过喷油口喷入曲轴箱。 因为喷油口 2 1 ()在气缸 8的侧 壁较高的位置， 同时高于曲轴的位置， 因此喷油口 210喷出的油使气缸 8内壁上具有更大面 积的润滑油， 同时， 使曲轴上相关部件具有1 £多润滑油。所述供油通道 21包括环形通道 21 1， 环形通道 21 1分别 h设置在气缸 8和气缸座 9上的凹槽拼接而成。 气缸 8上的环形通道 1 1 的凹槽上设有上槽孔 214， 气缸 9上的环形通道 21 1 的 1"1槽上设冇下槽孔 213， 供油通逍 21 中的油通过下槽孔 213进入环形通道 21 1， 绕环形通道流动到上槽孔 214， 润滑油从上槽 孔 214流入凸轮盖通道 216， 所述凸轮盖通道 216为供汕通道 21的一部分， 凸轮盖通道 21 6 设 S在凸轮室盖 31上（如图 3所示）， 所述凸轮室盖 31 覆盖在凸轮室 3上的 -个盖板， 经 过凸轮盖通道 216的润滑油通过凸轮轴 502上的通孔 1 12经喷油口喷入曲轴箱。 供油通道 21 还设有第一单向阀 212 , 第一 向阀 212在曲轴箱 1 内为负压时打开， 曲轴箱 1 内为正压时 关闭。 述第一单向阀 212设在与通孔 1 12同轴的空腔 302中， 所述空腔 3()2在凸轮室盖 1 上， 空腔 302与通孔 1 12都为圆柱形孔， 它们的 径大致相等。 因此， 在加工通孔 1 12时， 要稍微加工得深一点, 就可以形成空腔 302 , 然后可以将第一单向阀 212置于空腔 02屮， 降低了加工难度， 方便制造。
本发明揭示的喷油系统， 油路简 Φ·， 制造成本低， 能够给发动机气缸壁和曲轴箱带来 31 好的润滑效果。 上述实施方式只是本发明的优选实施方式， 任何不脱离本发明精神的变换或 ^换都 木发明的保护范園内。

Claims

权 利 要 求 书
1、 一种发动机喷汕系统， 包括连通油盘 （2) 和曲轴筘 （1 ) 的供油通道 （21 )， 润滑油通过 供油通道 （21 ) 进入曲轴筘 （1)， 其特征在于： 所述供油通道 （21) —端为喷油口 （210)， 喷汕 1:1 〔210) 设 S在气缸 （8) 侧壁上， 且位于活塞 （7) 下死点下方。
2、 如权利嬰求 1所述的发动机喷油系统， ¾特征在于： 所述喷油系统还包括凸轮室盖 （31 )， 所述 ^油通逍 (21 ) 至少有部分设置在凸轮室盖 （31 ) J二。
3、 如 K利耍求 2所述的发动机喷油系统， 其特征在于： 所述供油通道 （21 ) 包括第一单向阀 (212〕。
4、 如权利要求 3所述的发动机喷油系统， K特征在于： 凸轮室盖 (31) 上设有空腔 (302), 所述第- 向阀 〔212) S于空腔 （302) 内。
5、 利耍求 1所述的发动机喷油系统， JL:特征在 ： 所述供油通道 （21) 至少部分 气缸 (8) 和气缸座 (9) 拼接形成。
6、 如鞭利要求 5所述的发动机喷汕系统， 其特征在于： 所述气缸 （8) 和气缸座 （9) 拼接而 成的通道为环形通道 （211)。
7、 如 ¾利要求 6所述的发动机喷油系统， 其特征在于： 所述气缸 （8) 和气缸座 （9) 上的环 形通道分别设有上槽孔 （214) 和下槽孔 （213)。
PCT/CN2013/000615 2012-06-15 2013-05-27 发动机喷油系统 WO2013185471A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210198802.9 2012-06-15
CN201210198802.9A CN103511115B (zh) 2012-06-15 2012-06-15 发动机喷油系统

Publications (1)

Publication Number Publication Date
WO2013185471A1 true WO2013185471A1 (zh) 2013-12-19

Family

ID=49757476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/000615 WO2013185471A1 (zh) 2012-06-15 2013-05-27 发动机喷油系统

Country Status (2)

Country Link
CN (1) CN103511115B (zh)
WO (1) WO2013185471A1 (zh)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1617976A (zh) * 2002-01-30 2005-05-18 电气联合股份有限公司 曲轴箱扫气式内燃机
US20080083392A1 (en) * 2005-08-03 2008-04-10 Etg Limited Engine lubrication method
US20090013959A1 (en) * 2007-07-14 2009-01-15 Szu Liang Lin lubrication system for an engine
JP2011074833A (ja) * 2009-09-30 2011-04-14 Makita Corp ４サイクルエンジンの潤滑装置
CN102032016A (zh) * 2009-09-24 2011-04-27 株式会社牧田 便携式四冲程发动机的润滑装置
CN202732021U (zh) * 2012-06-15 2013-02-13 苏州科瓴精密机械科技有限公司 发动机喷油系统
CN202788988U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 发动机油盘
CN202788976U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 四冲程发动机润滑系统
CN202788973U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 发动机
CN202788974U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 油泵供油系统
CN202900436U (zh) * 2012-06-15 2013-04-24 苏州科瓴精密机械科技有限公司 发动机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004346766A (ja) * 2003-05-20 2004-12-09 Toyota Motor Corp 内燃機関のオイル供給装置
DE602006002450D1 (de) * 2005-08-03 2008-10-09 Etg Ltd Schmiervorrichtung für eine Viertaktbrennkraftmaschine eines Kraftwerkzeugs
CN101956587A (zh) * 2009-07-15 2011-01-26 江苏苏美达五金工具有限公司 任意翻转四冲程小型汽油机

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1617976A (zh) * 2002-01-30 2005-05-18 电气联合股份有限公司 曲轴箱扫气式内燃机
US20080083392A1 (en) * 2005-08-03 2008-04-10 Etg Limited Engine lubrication method
US20090013959A1 (en) * 2007-07-14 2009-01-15 Szu Liang Lin lubrication system for an engine
CN102032016A (zh) * 2009-09-24 2011-04-27 株式会社牧田 便携式四冲程发动机的润滑装置
JP2011074833A (ja) * 2009-09-30 2011-04-14 Makita Corp ４サイクルエンジンの潤滑装置
CN202732021U (zh) * 2012-06-15 2013-02-13 苏州科瓴精密机械科技有限公司 发动机喷油系统
CN202788988U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 发动机油盘
CN202788976U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 四冲程发动机润滑系统
CN202788973U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 发动机
CN202788974U (zh) * 2012-06-15 2013-03-13 苏州科瓴精密机械科技有限公司 油泵供油系统
CN202900436U (zh) * 2012-06-15 2013-04-24 苏州科瓴精密机械科技有限公司 发动机

Also Published As

Publication number Publication date
CN103511115A (zh) 2014-01-15
CN103511115B (zh) 2017-12-29

Similar Documents

Publication Publication Date Title
CN103321709B (zh) 四冲程发动机的润滑系统
US8701622B2 (en) Lubrication system for portable four-stroke engine
EP2153030B1 (en) Lubrication system for a four-stroke engine
US10221732B2 (en) Lubrication system for internal combustion engine
CN202788976U (zh) 四冲程发动机润滑系统
CN202788974U (zh) 油泵供油系统
CN101598046A (zh) 风冷式通用发动机的润滑装置
US20150096527A1 (en) Engine oil pan
US8627809B2 (en) Engine lubrication method
US8387595B2 (en) Lubricating device for four-stroke engine
CN201354657Y (zh) 一种引擎润滑装置
WO2013185471A1 (zh) 发动机喷油系统
WO2016066143A1 (zh) 四冲程发动机的润滑系统
CN202788973U (zh) 发动机
CN201354658Y (zh) 引擎润滑装置
CN202732021U (zh) 发动机喷油系统
WO2008150222A1 (en) Lubrication system for a four-stroke engine
CN103511017B (zh) 油泵供油系统
CN204961078U (zh) 一种小型风冷四冲程汽油机
US9797338B2 (en) Engine with rocker chamber
CN103511121B (zh) 发动机
CN209293883U (zh) 一种摩托车发动机迷宫油气分离机构
CN201176887Y (zh) 引擎润滑装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13804167

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 04-08-2015)

122 Ep: pct application non-entry in european phase

Ref document number: 13804167

Country of ref document: EP

Kind code of ref document: A1