WO2015109642A1 - 连杆活塞式组合燃烧室无死点往复型内燃机 - Google Patents

连杆活塞式组合燃烧室无死点往复型内燃机 Download PDF

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WO2015109642A1
WO2015109642A1 PCT/CN2014/073348 CN2014073348W WO2015109642A1 WO 2015109642 A1 WO2015109642 A1 WO 2015109642A1 CN 2014073348 W CN2014073348 W CN 2014073348W WO 2015109642 A1 WO2015109642 A1 WO 2015109642A1
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piston
connecting rod
internal combustion
combustion engine
gas chamber
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PCT/CN2014/073348
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English (en)
French (fr)
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尹建
尹佳琳
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尹建
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    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders

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  • the present invention relates to an internal combustion engine, and more particularly to a connecting rod piston type combined combustion chamber dead fly reciprocating internal combustion engine.
  • the existing piston reciprocating internal combustion engine has a problem that the piston has a dead point when it is descending from the top dead center in the power stroke.
  • the main reason is that the thrust direction of the conventional internal combustion engine piston can only be the downward direction of the piston, that is, the piston cannot transmit the thrust in multiple directions.
  • the thrust not only does not work but also directly acts on the crankshaft, increasing the load on the crankshaft, causing different degrees of damage to the crankshaft and the entire internal combustion engine, thereby shortening the service life of the internal combustion engine.
  • the object of the present invention is to provide a rod-and-piston combined combustion chamber dead-end reciprocating internal combustion engine, which can eliminate the problem of the dead point of the piston in the working stroke of the conventional reciprocating internal combustion engine when the piston is descending from the top dead center, and can effectively extend the problem.
  • a connecting rod piston type combined combustion chamber dead fly reciprocating internal combustion engine including a casing, a connecting rod, a crank, a crankshaft, a cylinder in the casing, a piston head mounted in the cylinder, and a piston
  • the inner cavity and the piston pin hole are opened in the head, the piston head is hinged with the connecting rod through the piston pin, the piston pin is matched with the piston pin hole, the connecting rod is located in the inner cavity, the air inlet hole is opened at the end of the piston head, and the crown is opened in the piston head a gas chamber and an air passage, the air passage is connected to the air cylinder, and one end of the connecting rod and the piston pin is provided with a piston block, the piston block is matched with the crown gas chamber, and the piston block can be driven by the connecting rod in the crown gas chamber Reciprocating swing; a sealing piece is arranged on the piston block, and the sealing piece is always sealed with the inner wall of the crown gas chamber during the reciprocating
  • the inner wall of the inner cavity is provided with an annular sealing groove
  • the axis of the annular sealing groove is perpendicular to the axis of the pin hole of the piston
  • the connecting ring of the connecting ring is arranged in the annular sealing groove.
  • the positive effect of the invention is that the piston can transmit thrust in multiple directions, and the thrust is directly applied to the connecting rod, and the connecting rod is forced to swing at the top dead center position to prevent the piston from standing at the top dead center, thereby It can effectively improve the smoothness of the internal machine and prolong the service life of the internal combustion engine. It utilizes the dead center distance of the original internal combustion engine at the top dead center position of about 15-25 ,, which lengthens the work stroke of the original conventional piston, and at the same time increases the thrust area of the piston, thereby ensuring that the internal combustion engine outputs power when the pressure is maximum. In order to improve work efficiency, reduce energy consumption, and effectively improve the dynamics and economy of the internal combustion engine.
  • the piston head, the piston pin and the connecting rod can perform an output power of more than 180 degrees.
  • the upper and lower dead points of the piston are the crankshaft 180 ⁇ + the piston block output thrust angle is the crank angle 90 ⁇ equal to the crank angle 180 ⁇ power output eliminates dead spots.
  • the invention also has the advantages of simple structure and convenient manufacture.
  • FIG. 1 is a schematic structural view of a dead-end reciprocating internal combustion engine of a connecting rod piston type combustor according to the present invention.
  • the piston is at a top dead center position, and the a, b, c collinear internal combustion engine is prone to a dead point here
  • 3 is a schematic view of the piston of FIG. 1 at a bottom dead center position
  • FIGS. 2 and 4 are respectively a schematic view of the piston of FIG. 1 descending to the middle of the cylinder and up to the middle of the cylinder
  • FIG. 5 is a schematic structural view of the piston head
  • Figure 6 is a top plan view of Figure 5.
  • the connecting rod piston type combined combustion chamber of the present invention has a dead point reciprocating internal combustion engine, and includes a casing, a connecting rod 4, a crank 5, and a crankshaft 6 as shown in FIG.
  • a cylinder 1 is provided in the housing.
  • a piston head 2 is mounted in the cylinder 1.
  • An inner chamber 13 and a piston pin hole 17 are formed in the piston head 2.
  • the piston head 2 is hinged to the connecting rod 4 via a piston pin 3.
  • the piston pin 3 cooperates with a piston pin hole 17 which is located in the inner chamber 13.
  • the end portion of the piston head 2 is provided with an intake hole 9.
  • a crown gas chamber 8 and an air passage 11 are formed in the piston head 2.
  • the air passage 11 communicates with the crankcase 16 of the cylinder 1.
  • a piston block 7 is provided at one end of the connecting rod 4 which is hinged to the piston pin 3. As shown in FIGS. 1 to 4, the piston block 7 is engaged with the crown gas chamber 8, and the piston block 7 can be reciprocally oscillated in the crown gas chamber 8 by the drive of the link 4.
  • the piston block 7 is provided with a sealing piece 10 which is always sealed with the inner wall of the crown gas chamber 8 during the reciprocating oscillation of the piston block 7.
  • the piston block 7 divides the crown gas chamber 8 into a first air chamber 14 and a second air chamber 15.
  • the first air chamber 14 and the second air chamber 15 are independent of each other.
  • the first air chamber 14 communicates with the air passage 11 and the second air chamber 15 communicates with the air inlet 9.
  • the sealing sheet 10 may be integrally formed with the piston block 7 or separately from the piston block 7.
  • the intake port 9 can also be referred to as an airway shaped combustion chamber.
  • the position of the airway shaped combustion chamber depends on the direction of rotation of the internal combustion engine.
  • the airway shaped combustion chamber shown in the figure of the present invention is located on the right side, that is, the right air passage type, and the internal combustion engine is a right-handed internal combustion engine.
  • the left-hand internal combustion engine is a left-handed internal combustion engine.
  • the piston block 7 is preferably a crown piston as shown in FIG.
  • the working principle and process of the internal combustion engine are the same as those of the existing internal combustion engine. The difference is that, as shown in FIG. 1 , when the piston head 2 is in the down position of the top dead center, the combustible gas is burned and expanded, and on the other hand, acts on the end surface of the piston head 2, The thrust of the piston head 2 descending along the cylinder 1; on the other hand, the combustible gas enters the second air chamber 15 via the air inlet 9 to directly act on the left side of the piston block 7, and a torque is applied to the connecting rod 4 through the piston block 7. , so that the connecting rod 4 swings smoothly through the top dead center position, thereby preventing the dead point from occurring.
  • the gas in the first air chamber 14 can be discharged into the crankcase 16 through the air passage 11.
  • the air passage 11 prevents air cushion or negative pressure from occurring in the first air chamber 14, ensuring that the piston block 7 normally swings within the crown gas chamber 8.
  • the internal combustion engine of the present invention may be the following reciprocating piston internal combustion engine:
  • the inner wall of the inner chamber 13 is provided with an annular sealing groove 12, and the axis of the annular sealing groove 12 is perpendicular to the axis of the piston pin hole 17.
  • a ring-shaped connecting ring is installed in the annular sealing groove 12, and the connecting rod sealing ring is matched with the connecting rod 4 to prevent leakage of the combustible gas from the second gas chamber 15 through the connecting rod 4 and the piston head 2, so as to ensure that the combustible gas is fully workable.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

连杆活塞式组合燃烧室无死点往复型内燃机包括壳体、连杆（4）、曲柄（5）、曲轴（6），壳体内设有气缸（1），气缸内安装活塞头（2），活塞头内开设内腔（13）和活塞销孔（17），活塞头通过活塞销（3）与连杆铰接，活塞销与活塞销孔配合，连杆位于内腔内。活塞头的端部开设进气孔（9），活塞头内开设冠形燃气室（8）和通气道（11）。这种内燃机结构简单，制造方便。

Description

连杆活塞式组合燃烧室无死点往复型内燃机 技术领域
　　　本发明涉及一种内燃机，确切地说是一种连杆活塞式组合燃烧室无死点往复型内燃机。
背景技术
　　现有的活塞往复式内燃机存在做功行程中活塞在上止点下行时存在死点的问题。其主要原因是，传统内燃机活塞的推力方向只能是活塞的下行方向，即活塞无法向多个方向传递推力。当活塞行至上止点时，推力不仅不做功还会直接作用于曲轴上，增加了曲轴的负荷，对曲轴及整个内燃机都会造成不同程度的损坏，从而，缩短了内燃机的使用寿命。
发明内容
　　　本发明的目的，是提供一种连杆活塞式组合燃烧室无死点往复型内燃机，它可消除传统往复式内燃机做功行程中活塞在上止点下行时存在的死点的问题，可有效延长活塞的做功行程，并减轻曲轴的负荷，延长曲轴及整个内燃机的使用寿命。
　　　本发明的目的是通过以下技术方案实现的：连杆活塞式组合燃烧室无死点往复型内燃机，包括壳体、连杆、曲柄、曲轴，壳体内设有气缸，气缸内安装活塞头，活塞头内开设内腔和活塞销孔，活塞头通过活塞销与连杆铰接，活塞销与活塞销孔配合，连杆位于内腔内，活塞头的端部开设进气孔，活塞头内开设冠形燃气室和通气道，通气道与气缸相通，连杆与活塞销铰接的一端设有活塞块，活塞块与冠形燃气室配合，并且活塞块能在连杆的驱动下在冠形燃气室内往复摆动；活塞块上设有密封片，密封片随活塞块往复摆动动过程中始终与冠形燃气室的内壁配合密封，活塞块将冠形燃气室分为第一气室和第二气室，第一气室与通气道相通，第二气室与进气孔相通。
　　　为进一步实现本发明的目的，还可以采用以下技术方案实现：所述内腔内壁上设有环形密封槽，环形密封槽的轴线与活塞销孔的轴线垂直，环形密封槽内安装连杆密环，连杆密封环与连杆配合密封。
　　　本发明的积极效果在于：它的活塞可实现多方向传递推力，并将推力直接作用于连杆上，在上止点位置处迫使连杆摆动，以防止活塞在上止点出现死点，从而，能有效提高内然机的平顺性，延长内燃机的使用寿命。它利用了原内燃机上止点位置约15－25゜的死点距离，加长了原传统活塞的做功行程，同时，增加了活塞的推力面积，从而，确保所述内燃机在压力最大时输出动力，以提高做功效率，降低能耗，并可有效地提高了内燃机的动力性及经济性。活塞头、活塞销和连杆可做大于180度角的输出动力的动作，具体地说是活塞运行上、下止点为曲轴180゜+活塞块输出推力角为曲轴转角90゜等于大于曲轴转角180゜的动力输出，消除了死点。本发明还具有结构简单、制造方便的优点。
附图说明
　　　图1为本发明所述连杆活塞式组合燃烧室无死点往复型内燃机的结构示意图，图中活塞处于上止点位置，a、b、c共线内燃机在此处易出现死点；图3是图1中的活塞处于下止点位置的示意图；图2和图4分别是图1中的活塞下行至气缸中部和上行至气缸中部的示意图；图5是所述活塞头的结构示意图；图6是图5的俯视结构示意图。
　　　附图标记：1气缸　2活塞头　3活塞销　4连杆　5曲柄　6曲轴　7活塞块　8冠形燃气室　9进气孔　10密封片　11通气道　12环形密封槽　13内腔　14第一气室　15第二气室　16曲轴箱　17活塞销孔　a活塞头与连杆铰接点　b连杆与曲柄的铰接点　c曲轴端面圆心。
具体实施方式
　　　本发明所述的连杆活塞式组合燃烧室无死点往复型内燃机，如图1所示包括壳体、连杆4、曲柄5、曲轴6。壳体内设有气缸1。气缸1内安装活塞头2。活塞头2内开设内腔13和活塞销孔17。活塞头2通过活塞销3与连杆4铰接。活塞销3与活塞销孔17配合，连杆4位于内腔13内。如图5所示，活塞头2的端部开设进气孔9。活塞头2内开设冠形燃气室8和通气道11。通气道11与气缸1的曲轴箱16相通。连杆4与活塞销3铰接的一端设有活塞块7。如图1至4所示，活塞块7与冠形燃气室8配合，并且活塞块7能在连杆4的驱动下在冠形燃气室8内往复摆动。活塞块7上设有密封片10，密封片10随活塞块7往复摆动过程中始终与冠形燃气室8的内壁配合密封。活塞块7将冠形燃气室8分为第一气室14和第二气室15。第一气室14和第二气室15相互独立不通。第一气室14与通气道11相通，第二气室15与进气孔9相通。所述密封片10可与活塞块7制成一体，也可与活塞块7分别单独制作。进气孔9也可称为气道形燃烧室。气道形燃烧室的位置取决于内燃机的旋转方向。本发明图中所示气道形燃烧室位于右侧，即为右气道式，其内燃机为右旋内燃机。反之，左方向内燃机为左旋内燃机。所述活塞块7最好为如图1所示的冠形活塞。
　　　所述内燃机的工作原理和过程与现有内燃机相同，区别在于，如图1所示，当活塞头2处于上止点下行位置时，可燃气体燃烧膨胀，一方面作用于活塞头2的端面，给活塞头2沿气缸1下行的推力；另一方面，可燃气体经进气孔9进入第二气室15内直接作用于活塞块7的左侧，通过活塞块7对连杆4施加一个扭矩，使连杆4摆动顺利通过上止点位置，从而，防止死点发生。活塞块7向左摆动过程中，第一气室14内的气体可经通气道11排入曲轴箱16内。通气道11可防止第一气室14内出现气垫或负压，确保活塞块7在冠形燃气室8内正常摆动。
　　　本发明所述内燃机可以是以下往复活塞内燃机：
　　　1、用于汽油柴油二冲程及四冲程往复式活塞内燃机的发展。
　　　2、用于单缸及多缸型号内燃机的发展。
　　　3、用于强制式及自燃式点燃内燃机。
　　　4、用于顶置式及倒置式气门内燃机。
　　　5、用于左旋转及右旋转的内燃机。
　　　6、用于各种启动方式的内燃机。
　　　7、用于各种冷却方式的内燃机。
　　　8、用于各种润滑方式的内燃机。
　　　9、用于I、Y、V、一等各种排列式内燃机。
　　　如图5所示，所述内腔13内壁上设有环形密封槽12，环形密封槽12的轴线与活塞销孔17的轴线垂直。环形密封槽12内安装连杆密环，连杆密封环与连杆4配合密封，可防止可燃气体由第二气室15经连杆4与活塞头2之间泄漏，以确保可燃气体充分做功。
　　　本发明所述的技术方案并不限制于本发明所述的实施例的范围内。本发明未详尽描述的技术内容均为公知技术。

Claims (2)

  1. 连杆活塞式组合燃烧室无死点往复型内燃机，包括壳体、连杆（4）、曲柄（5）、曲轴（6），壳体内设有气缸（1），气缸（1）内安装活塞头（2），活塞头（2）内开设内腔（13）和活塞销孔（17），活塞头（2）通过活塞销（3）与连杆（4）铰接，活塞销（3）与活塞销孔（17）配合，连杆（4）位于内腔（13）内，其特征在于：活塞头（2）的端部开设进气孔（9），活塞头（2）内开设冠形燃气室（8）和通气道（11），通气道（11）与气缸（1）相通，连杆（4）与活塞销（3）铰接的一端设有活塞块（7），活塞块（7）与冠形燃气室（8）配合，并且活塞块（7）能在连杆（4）的驱动下在冠形燃气室（8）内往复摆动；活塞块（7）上设有密封片（10），密封片（10）随活塞块（7）往复摆动动过程中始终与冠形燃气室（8）的内壁配合密封，活塞块（7）将冠形燃气室（8）分为第一气室（14）和第二气室（15），第一气室（14）与通气道（11）相通，第二气室（15）与进气孔（9）相通。
  2. 据权利要求1所述的连杆活塞式组合燃烧室无死点往复型内燃机，其特征在于：所述内腔（13）内壁上设有环形密封槽（12），环形密封槽（12）的轴线与活塞销孔（17）的轴线垂直，环形密封槽（12）内安装连杆密环，连杆密封环与连杆（4）配合密封。
PCT/CN2014/073348 2014-01-26 2014-03-13 连杆活塞式组合燃烧室无死点往复型内燃机 WO2015109642A1 (zh)

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CN2561942Y (zh) * 2002-08-05 2003-07-23 马宜辉 直流换气直喷式二冲程内燃机
CN101042068A (zh) * 2006-03-26 2007-09-26 贡晓婷 组合式转缸发动机
CN203702338U (zh) * 2014-01-26 2014-07-09 尹建 连杆活塞式组合燃烧室无死点往复型内燃机

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