WO2019041715A1 - 偶件组合活塞环与活塞总成 - Google Patents

偶件组合活塞环与活塞总成 Download PDF

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WO2019041715A1
WO2019041715A1 PCT/CN2018/000299 CN2018000299W WO2019041715A1 WO 2019041715 A1 WO2019041715 A1 WO 2019041715A1 CN 2018000299 W CN2018000299 W CN 2018000299W WO 2019041715 A1 WO2019041715 A1 WO 2019041715A1
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piston ring
piston
ring
main
primary
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PCT/CN2018/000299
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English (en)
French (fr)
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张细辉
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张细辉
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 

Definitions

  • the present invention relates to the technical field of internal combustion engine accessories, and in particular to a coupling assembly piston ring and piston assembly.
  • the piston ring is a metal ring for breaking into the inside of the piston groove.
  • the piston ring is a metal elastic ring with large outward expansion deformation, which is assembled into the section and its corresponding annular groove, and reciprocating and rotating motion.
  • the piston ring relies on the pressure difference of gas or liquid to form a seal between the outer circumferential surface of the ring and the cylinder and a side of the ring and the ring groove.
  • the piston ring is the core component inside the fuel engine, and the cylinder, the piston and the cylinder wall Wait for the fuel gas to seal together.
  • Piston ring functions include sealing, adjusting oil (oil control), heat conduction (heat transfer), and guiding (supporting).
  • Sealing means sealing the gas, preventing the gas in the combustion chamber from leaking to the crankcase, keeping the leakage of the gas to a minimum and improving the thermal efficiency. Air leakage will not only reduce the power of the engine, but also degrade the oil, which is the main task of the air ring;
  • Adjusting the oil (oil control) scrape off the excess oil on the cylinder wall, and at the same time make a thin oil film on the cylinder wall to ensure the normal lubrication of the cylinder and piston and ring. This is the main task of the oil ring. On modern high-speed engines, special attention is paid to the role of the piston ring to control the oil film;
  • Heat conduction The heat of the piston is transmitted to the cylinder liner through the piston ring, which is to cool. According to reliable data, 70-80% of the heat received by the top of the piston is dissipated through the piston ring to the cylinder wall;
  • the piston ring keeps the piston in the cylinder to prevent the piston from directly contacting the cylinder wall, ensuring smooth movement of the piston, reducing frictional resistance, and preventing the piston from knocking on the cylinder.
  • the existing piston rings on the market are annular metal rings with notches.
  • the structure of the piston rings can also be directly understood by Baidu. Generally speaking, four such piston rings and four pistons need to be installed on the piston rod of one cylinder. The rings are spaced along the length of the piston rod.
  • the piston ring cannot completely close the gas in the cylinder, and a small amount of gas flows into the crankcase through the notch of the piston ring, thereby causing power leakage of the internal combustion engine;
  • the present invention provides a coupling assembly piston ring and piston assembly to achieve complete closure of the gas in the cylinder to increase power, extend the service life of the piston ring and cylinder, and reduce oil turbidity to internal parts.
  • the purpose of wear and tear is to extend the service life of the oil and parts. It solves the problem that the existing piston ring can not achieve complete sealing of the gas in the cylinder, resulting in leakage of the internal combustion engine, greatly reducing the service life of the piston ring and the cylinder and the turbidity of the oil. Wear of internal parts causes losses that can affect the life of the oil and parts.
  • a coupling assembly piston ring and piston assembly includes a piston, a coupling assembly piston ring mounted on the piston, the coupling assembly piston ring including a primary piston ring and a secondary piston ring, the primary piston ring and the secondary piston
  • the rings are each provided with an opening, and the opening of the main piston ring is misaligned with the opening of the secondary piston ring;
  • the main piston ring has a stepped shape, and the step surface of the main piston ring is located at the main piston ring a side of the outer circumference;
  • the secondary piston ring has a rectangular cross section, and the secondary piston ring is fitted to the main piston ring;
  • the piston is provided with an annular groove for assembling the coupling piston ring of the coupling member.
  • the side wall of the annular groove is provided with a pressing groove concentric therewith and the pressing groove is located on a side where the large end surface of the main piston ring is located, and the inside of the pressing groove is equipped with a pressure ring spring.
  • the distance between the step surface of the main piston ring and the large end surface of the main piston ring is equal to the distance between the step surface of the main piston ring and the small end surface of the main piston ring.
  • the radial width of the small end face of the primary piston ring is a quarter of the radial width of the large end face of the primary piston ring.
  • an opening of the main piston ring is offset from the opening of the secondary piston ring by 180°.
  • a main piston ring inside the annular groove is fitted above the secondary piston ring, and the pressure ring spring abuts above the main piston ring.
  • the piston ring of the invention only needs one to achieve complete sealing, so that the contact area between the piston ring and the inner wall of the cylinder is greatly reduced, the wear between the two is reduced, the service life of the two is greatly improved, and the exhaust emission can be reduced. ;
  • the invention is composed of a special piston, a pressure ring spring, a main piston ring and a secondary piston ring to form a combined assembly, the wear of the assembly on the internal combustion engine, power, fuel consumption, cylinder and crankcase, especially the loss of oil, for the country
  • the promotion of energy conservation and emission reduction has a qualitative improvement.
  • FIG. 1 is a schematic view showing the assembly structure of a coupling part piston ring and a piston assembly provided by the present invention
  • Figure 2 is a partially enlarged schematic view of Figure 1;
  • FIG. 3 is a schematic view showing the assembly structure of a coupling piston ring of a coupling part and a coupling piston ring of a piston assembly provided by the present invention
  • FIG. 4 is a schematic structural view of a coupling piston ring and a main piston ring in a piston assembly provided by the present invention
  • FIG. 5 is a schematic structural view of a coupling piston ring and a piston ring of a piston assembly provided by the present invention
  • FIG. 6 is a schematic structural view of a coupling ring piston ring and a piston assembly intermediate pressure ring spring provided by the present invention
  • Figure 7 is a schematic view showing the structure of a piston in a coupling piston ring and a piston assembly provided by the present invention.
  • a coupling member piston ring and piston assembly including a piston 3, a coupling member piston ring 7 mounted on the piston 3, the piston 3
  • the outer sleeve is provided with a cylinder 5, and the outer wall of the piston 3 is provided with a piston pin hole 9, and the coupling member piston ring 7 includes a main piston ring 1 and a sub-piston ring 2, and the main piston ring 1 and the sub-piston ring 2
  • An opening is provided, and the opening of the main piston ring 1 and the opening of the secondary piston ring 2 are misaligned;
  • the main piston ring 1 has a stepped shape, and the step surface of the main piston ring 1 is located at the main The outer circumference side of the piston ring 1;
  • the sub piston ring 2 has a rectangular cross section, and the sub piston ring 2 is fitted to the main piston ring 1, that is, the sub piston ring 2 is sleeved on the step surface of the main piston
  • the opening of the main piston ring 1 is offset from the opening of the secondary piston ring 2 by 180°; the piston 3 is provided for assembly
  • the coupling member combines the annular groove 8 of the piston ring 7, and the side wall of the annular groove 8 is provided with a pressing groove 6 concentric therewith.
  • the pressing groove 6 is located on the side where the large end surface of the main piston ring 1 is located, the inside of the pressing groove 6 is fitted with the pressure ring spring 4 and the pressure ring spring 4 is in the shape of a ring; the top of the pressure ring spring 4 slightly protrudes from the The open end face of the pressing groove 6 is described, and the top of the pressure ring spring 4 directly abuts against the large end face of the main piston ring 1.
  • the function of the pressure ring spring 4 is that when the piston 3 descends, the piston ring 7 can be tightly pressed and brought into close contact with the ring groove surface to isolate the oil from entering the combustion chamber.
  • the step surface on the main piston ring 1 defines a limiting slot in a radial direction
  • the end surface of the secondary piston ring 2 is provided with a limiting block matched with the limiting slot.
  • the limiting block is fitted into the limiting slot for limiting relative rotation between the primary piston ring 1 and the secondary piston ring 2 to maintain a misaligned assembly between the opening of the primary piston ring 1 and the opening of the secondary piston ring 2.
  • the state is fitted in the piston 3 described.
  • the main piston ring 1 further includes a small end surface of the main piston ring 1 and a large end surface of the main piston ring 1 respectively located on both sides of the step surface of the main piston ring 1, and the large end surface of the main piston ring 1 is a main piston ring 1
  • the large-diameter end surface, the small end surface of the main piston ring 1 is the small-diameter end surface of the main piston ring 1, and the distance between the step surface of the main piston ring 1 and the small end surface of the main piston ring 1 is equal to the main piston ring 1
  • the distance between the step surface and the large end surface of the main piston ring 1; the radial width of the small end surface of the main piston ring 1 is a quarter of the radial width of the large end surface of the main piston ring 1;
  • the piston ring 2 is mounted on the step surface of the main piston ring 1, and the end surface of the sub-piston ring 2 is flush with the small end surface of the main piston ring 1, that
  • the end surface of the secondary piston ring 2 includes an upper end surface of the secondary piston ring 2 and a lower end surface of the secondary piston ring 2, and a lower end surface of the secondary piston ring 2 is fitted with a step surface of the primary piston ring 1.
  • the primary piston ring 1 further includes an inner circumference of the primary piston ring 1, a first outer circumference of the primary piston ring 1, and a second outer circumference of the primary piston ring 1; the first outer circumference of the primary piston ring 1 is a small diameter
  • the outer circumference, the second outer circumference of the primary piston ring 1 is a large diameter outer circumference;
  • the secondary piston ring 2 further includes an outer circumference of the secondary piston ring 2 and an inner circumference of the secondary piston ring 2, the outer side of the secondary piston ring 2
  • the circumferential diameter is equal to the second outer circumferential diameter of the primary piston ring 1, and the inner circumferential diameter of the secondary piston ring 2 is equal to the first outer circumferential diameter of the primary piston ring 1.
  • the primary piston ring 1 of the coupling member piston ring 7 is fitted above the secondary piston ring 2, and the secondary piston ring 2 is located below the primary piston ring 1, which ensures the inner circumference of the primary piston ring 1.
  • the ring spring 4 pairs the piston ring 7 provides an elastic pressing force in the axial direction to prevent loosening of the cooperation between the main piston ring 1 and the sub-piston ring 2 during the movement of the piston of the coupling member, and the main piston can be ensured.
  • the assembled gap side of the ring 1 and the secondary piston ring 2 is located on the outer wall of the piston 3 and is in contact with the inside of the cylinder which is sleeved outside the piston 3, so that the coupling part of the piston ring 7 has better sealing performance to the cylinder. .

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

Abstract

一种偶件组合活塞环（7）与活塞总成，包括活塞（3）、安装于活塞（3）上的偶件组合活塞环（7），偶件组合活塞环（7）包括主活塞环（1）和副活塞环（2），主活塞环（1）的开口与副活塞环（2）的开口呈错位装配；主活塞环（1）的截面为阶梯型，主活塞环（1）的阶梯面位于主活塞环（1）的外圆周一侧：副活塞环（2）的截面为矩形，且副活塞环（2）适配安装于主活塞环（1）上；活塞（3）上开设有用于装配偶件组合活塞环（7）的环形凹槽（8），且环形凹槽（8）上开设有与其同心的压紧槽（6），压紧槽（6）的内部装配有压环弹簧（4）。

Description

偶件组合活塞环与活塞总成
本发明所属技术领域
本发明涉及内燃机配件的技术领域，具体地，涉及一种偶件组合活塞环与活塞总成。
本发明之前的现有技术
活塞环是用于崁入活塞槽沟内部的金属环，活塞环是一种具有较大向外扩张变形的金属弹性环，它被装配到剖面与其相应的环形凹槽内，且往复和旋转运动的活塞环，依靠气体或液体的压力差，在环外圆面和气缸以及环和环槽的一个侧面之间形成密封，活塞环是燃油发动机内部的核心部件，它和汽缸，活塞，汽缸壁等一起完成燃油气体的密封。
活塞环作用包括密封、调节机油(控油)、导热(传热)、导向(支承)四个作用。
密封：指密封燃气，不让燃烧室的气体漏到曲轴箱，把气体的泄漏量控制在最低限度，提高热效率。漏气不仅会使发动机的动力下降，而且会使机油变质，这是气环的主要任务；
调节机油(控油)：把气缸壁上多余的润滑油刮下，同时又使缸壁上布有薄薄的油膜，保证气缸和活塞及环的正常润滑，这是油环的主要任务。在现代高速发动机上，特别重视活塞环控制油膜的作用；
导热：通过活塞环将活塞的热量传导给缸套，即起冷却作用。据可靠资料认为，活塞顶所受的的热量中有70～80％是通过活塞环传给缸壁而散掉的；
支承：活塞环将活塞保持在气缸中，防止活塞与气缸壁直接接触，保证活塞平顺运动，降低摩擦阻力，而且防止活塞敲缸。
现有市面上的活塞环均是带有缺口的环形金属环，活塞环的结构也可直接百度进行了解，一般来说，一个气缸的活塞杆上需要安装4个这样的活塞环，4个活塞环沿活塞杆的长度方向间隔排列。
现有的活塞环存在如下缺陷：
1、活塞环无法实现气缸内气体的完全封闭，还有会有少量气体经活塞环的缺口流到曲轴箱内，从而导致内燃机动力泄露；
2、由于就是活塞环大概需要四个，使得活塞环与气缸内壁的接触面积很大，导致两者之间的磨损很大，大大降低了活塞环和气缸的使用寿命；
3、曲轴箱内的温度过高，从而影响机油的润滑粘稠度；
4、因油的燃烧产生微小颗粒形成颗粒累积，机油浑浊对内部零件的磨损造成损耗，影响机油和零件的使用寿命。
本发明目的
为解决上述技术问题，本发明提供了一种偶件组合活塞环与活塞总成以达到实现气缸内气体的完全封闭以提高动力、延长活塞环和气缸的使用寿命以及降低机油浑浊对内部零件的磨损造成损耗以延长机油和零件的使用寿命的目的，解决了现有的活塞环无法实现气缸内气体的完全封闭导致内燃机动力泄露、磨损很大降低了活塞环和气缸的使用寿命以及机油浑浊对内部零件的磨损造成损耗会影响机油和零件的使用寿命的问题。
本发明采用的技术方案
本发明所提供的技术方案是：
一种偶件组合活塞环与活塞总成，包括活塞、安装于活塞上的偶件组合活塞环，所述偶件组合活塞环包括主活塞环和副活塞环，所述主活塞环和副活塞环均设有开口，且所述主活塞环的开口与所述副活塞环的开口之间呈错位装配；所述主活塞环的截面为阶梯型，主活塞环的阶梯面位于主活塞环的外圆周一侧；所述副活塞环的截面为矩形，且副活塞环适配安装于所述主活塞环上；所述活塞上开设有用于装配所述偶件组合活塞环的环形凹槽，且环形凹槽的侧壁上开设有与其同心的压紧槽且压紧槽位于主活塞环大端面所在的一侧，压紧槽的内部装配有压环弹簧。
进一步地，所述主活塞环的阶梯面与主活塞环的大端面之间的距离等于主活塞环的阶梯面与主活塞环的小端面之间的距离。
进一步地，所述主活塞环的小端面的径向宽度为主活塞环的大端面的径向宽度的四分之一。
进一步地，所述主活塞环的开口与所述副活塞环的开口之间呈错开180°设置。
进一步地，所述环形凹槽内部的主活塞环装配于副活塞环的上方，且所述压环弹簧抵紧于所述主活塞环的上方。
相比于现有技术，本发明的有益效果是：
1、可阻断燃烧气体，使得其无法进入曲轴箱，提高动力，减少油耗；
2、可降低曲轴箱的温度，从而增加机油的润滑粘稠度；
3、可阻断气体中的微小颗粒进入曲轴箱，基本杜绝了微小颗粒的堆积，增加了机油和发动机的使用寿命；
4、本发明的活塞环只需要一个就可实现完全密封，使得活塞环与气缸内壁的接触面积大大减少，减少了两者之间的磨损，大大提高了两者的使用寿命，可以减少尾气排放；
5、本发明由专用活塞、压环弹簧、主活塞环和副活塞环配套形成组合总成，本总成对内燃机、动力、油耗、气缸以及曲轴箱的磨损，特别是机油的损耗，对于国家提倡的节能减排有质的提升。
附图说明
图1是本发明提供的偶件组合活塞环与活塞总成的装配结构示意图；
图2是图1的局部放大结构示意图；
图3是本发明提供的偶件组合活塞环与活塞总成中偶件组合活塞环的装配结构示意图；
图4是本发明提供的偶件组合活塞环与活塞总成中主活塞环的结构示意图；
图5是本发明提供的偶件组合活塞环与活塞总成中副活塞环的结构示意图；
图6是本发明提供的偶件组合活塞环与活塞总成中压环弹簧的结构示意图；
图7是本发明提供的偶件组合活塞环与活塞总成中活塞的结构示意图。
实施例
下面结合具体实施例对本发明作进一步详细介绍，以下文字的目的在于说明本发明，而非限制本发明的保护范围。
如图1-图7所示，本发明可按照如下方式实施，一种偶件组合活塞环与活塞总成，包括活塞3、安装于活塞3上的偶件组合活塞环7，所述活塞3的外部套设有气缸5，活塞3的外壁上设有活塞销孔9，所述偶件组合活塞环7包括主活塞环1和副活塞环2，所述主活塞环1和副活塞环2均设有开口，且所述主活塞环1的开口与所述副活塞环2的开口之间呈错位装配；所述主活塞环1的截面为阶梯型，主活塞环1的阶梯面位于主活塞环1的外圆周一侧；所述副活塞环2的截面为矩形，副活塞环2适配安装于所述主活塞环1上，即副活塞环2套于主 活塞环1的阶梯面上，以构成完整的偶件组合活塞环7，作为优选的，将所述主活塞环1的开口与所述副活塞环2的开口呈错开180°设置；所述活塞3上开设有用于装配所述偶件组合活塞环7的环形凹槽8，环形凹槽8的侧壁上开设有与其同心的压紧槽6且压紧槽6位于主活塞环1的大端面所在的一侧，压紧槽6的内部装配有压环弹簧4且压环弹簧4为环形状；所述压环弹簧4的顶部略突出于所述压紧槽6的开口端面，压环弹簧4的顶部直接抵紧在所述主活塞环1的大端面上。其中，所述压环弹簧4的作用在于：用于活塞3下行时，可紧压偶件组合活塞环7并使其紧贴环槽面，隔绝机油进入燃烧室。
作为优选的，所述主活塞环1上的阶梯面沿径向方向开设有限位槽口，所述副活塞环2的端面上设有与所述限位槽口相匹配的限位块。所述限位块装配至限位槽口内，用于限制主活塞环1和副活塞环2之间的相对转动，以保持主活塞环1的开口与副活塞环2的开口之间呈错位装配的状态装配于所述的活塞3中。
所述主活塞环1还包括分别位于主活塞环1的阶梯面两侧的主活塞环1的小端面和主活塞环1的大端面，所述主活塞环1的大端面为主活塞环1的大直径端端面，主活塞环1的小端面为主活塞环1的小直径端端面，所述主活塞环1的阶梯面与主活塞环1的小端面之间的距离等于主活塞环1的阶梯面与主活塞环1的大端面之间的距离；所述主活塞环1的小端面的径向宽度为主活塞环1的大端面的径向宽度的四分之一；所述副活塞环2装配于主活塞环1的阶梯面上，副活塞环2的端面与所述主活塞环1的小端面相平齐，即所述副活塞环2的轴向高度等于主活塞环1的阶梯面与主活塞环1的小端面之间的距离。
所述副活塞环2的端面包括副活塞环2上端面和副活塞环2下端面，副活塞环2下端面与主活塞环1的阶梯面相适配。所述主活塞环1还包括主活塞环1的内圆周、主活塞环1的第一外圆周以及主活塞环1的第二外圆周；所述主活塞环1的第一外圆周为小直径外圆周，主活塞环1的第二外圆周为大直径外圆周；所述副活塞环2还包括副活塞环2的外圆周和副活塞环2的内圆周，所述副活塞环2的外圆周直径等于主活塞环1的第二外圆周直径，副活塞环2的内圆周直径等于主活塞环1的第一外圆周直径。
作为优选方式，所述偶件组合活塞环7中的主活塞环1装配于副活塞环2的上方，副活塞环2位于所述主活塞环1的下方，能够保证主活塞环1的内圆周与环形凹槽8的底部相适配，且所述压环弹簧4抵紧于所述主活塞环1的上方，即压紧槽6的开口端朝向所述主活塞环1的大端面，压环弹簧4对偶件组合活塞环 7提供轴线方向的弹性压紧力，防止偶件组合活塞环7在活塞的运动过程中主活塞环1和副活塞环2之间的配合松动，可保证主活塞环1和副活塞环2的装配后的间隙一侧位于所述活塞3的外壁上且与套于活塞3外部的气缸内部相接触，实现偶件组合活塞环7对气缸具有更好的密封性。
任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求所述的保护范围为准。

Claims (5)

  1. 一种偶件组合活塞环与活塞总成，其特征在于，包括活塞、安装于活塞上的偶件组合活塞环，所述偶件组合活塞环包括主活塞环和副活塞环，所述主活塞环和副活塞环均设有开口，且所述主活塞环的开口与所述副活塞环的开口之间呈错位装配；所述主活塞环的截面为阶梯型，主活塞环的阶梯面位于主活塞环的外圆周一侧；所述副活塞环的截面为矩形，且副活塞环适配安装于所述主活塞环上；所述活塞上开设有用于装配所述偶件组合活塞环的环形凹槽，且环形凹槽的侧壁上开设有与其同心的压紧槽且压紧槽位于主活塞环的大端面所在一侧，压紧槽的内部装配有压环弹簧。
  2. 根据权利要求1所述的偶件组合活塞环与活塞总成，其特征在于，所述主活塞环的阶梯面与主活塞环的大端面之间的距离等于主活塞环的阶梯面与主活塞环的小端面之间的距离。
  3. 根据权利要求2所述的偶件组合活塞环与活塞总成，其特征在于，所述主活塞环的小端面的径向宽度为主活塞环的大端面的径向宽度的四分之一。
  4. 根据权利要求1所述的偶件组合活塞环与活塞总成，其特征在于，所述主活塞环的开口与所述副活塞环的开口之间呈错开180°设置。
  5. 根据权利要求1所述的偶件组合活塞环与活塞总成，其特征在于，所述环形凹槽内部的主活塞环装配于副活塞环的上方，且所述压环弹簧抵紧于所述主活塞环的上方。
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