WO2017128510A1 - 一种组合式气缸套 - Google Patents

一种组合式气缸套 Download PDF

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Publication number
WO2017128510A1
WO2017128510A1 PCT/CN2016/077421 CN2016077421W WO2017128510A1 WO 2017128510 A1 WO2017128510 A1 WO 2017128510A1 CN 2016077421 W CN2016077421 W CN 2016077421W WO 2017128510 A1 WO2017128510 A1 WO 2017128510A1
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Prior art keywords
cylinder liner
ring
outer ring
cylinder
wall
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PCT/CN2016/077421
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English (en)
French (fr)
Inventor
唐文献
徐欣宏
张建
周伟中
张猛
周通
晏飞
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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Publication of WO2017128510A1 publication Critical patent/WO2017128510A1/zh
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    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/004—Cylinder liners
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/16—Cylinder liners of wet type
    • 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
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • F16J10/04—Running faces; Liners

Definitions

  • the invention relates to a combined cylinder liner, belonging to the field of internal combustion engines.
  • the cylinder liner is one of the important components of the piston internal combustion engine.
  • the cylinder liner is subjected to complex loads such as bolt preload, gas explosion pressure, piston side thrust and periodic thermal load. Under these severe loads.
  • the damage easily caused by the cylinder liner affects the normal operation of the internal combustion engine; therefore, the life of the cylinder liner has a great influence on whether the internal combustion engine can work reliably and stably.
  • the traditional cylinder liner is a monolithic structural part, that is, the cylinder liner is obtained by integral casting.
  • the cylinder liner needs sufficient strength, high temperature resistance and wear resistance, so the cylinder liner is manufactured.
  • the material requirements are higher, which increases the cost of the cylinder liner.
  • the patent CN202165169U proposes a wear-resistant cylinder liner, that is, a layer of nano ceramic particles resistant to high temperature and wear is provided on the inner wall surface of the cylinder liner, and the method is only improved.
  • the angle of the material of the inner wall surface of the cylinder liner improves the wear resistance of the cylinder liner, and ignores the influence of the high temperature environment on the lubrication performance of the cylinder liner when the cylinder liner is working;
  • the patent CN104632450A and the patent CN204458065U respectively propose a cylinder with a scraping carbon ring
  • the method only improves the lubrication performance of the cylinder liner from the perspective of reducing the carbon deposit in the cylinder, thereby improving the wear resistance of the cylinder liner, but ignoring the wear resistance of the cylinder liner material itself, and the high temperature environment of the cylinder liner when working on the cylinder
  • patent CN2603854 proposes a composite cylinder liner.
  • This method only improves the high temperature and wear resistance of the cylinder liner from the perspective of improving the material strength of the inner surface of the cylinder liner, ignoring the high temperature environment of the cylinder liner during operation.
  • the influence of the lubrication performance of the cylinder liner, and the working environment of the inner wall of the lower end portion of the cylinder liner is better, and the upper end is used. Wear-resistant materials will increase costs.
  • the present invention provides a combined cylinder liner capable of reducing the operating temperature of the cylinder liner, improving the wear resistance of the cylinder liner, improving the life of the cylinder liner, and reducing the manufacture of the cylinder liner. cost.
  • the combined cylinder liner of the present invention comprises a machine body, a cylinder liner outer ring and a cylinder liner inner ring, wherein the cylinder sleeve outer ring is located in the machine body, and the cylinder sleeve inner ring is inserted into the cylinder liner outer ring.
  • the inner wall and the outer wall of the outer ring of the cylinder liner are provided with spiral cooling grooves, and the two ends of the spiral cooling groove of the inner wall of the outer ring of the cylinder sleeve are respectively connected with the inner coolant inlet pipe and the inner coolant outlet pipe, outside the cylinder liner
  • the spiral cooling grooves of the outer wall of the ring are respectively connected with the outer coolant inlet pipe and the outer coolant outlet pipe, and the inner wall spiral cooling groove is made of high-strength material.
  • the length of the inner ring of the cylinder liner is 0.4-0.6 of the length of the outer ring of the cylinder liner, and the inner ring of the cylinder liner and the upper end of the outer ring of the cylinder liner are flush.
  • the lower end of the inner ring of the cylinder liner is in the shape of a truncated cone, and the outer ring of the cylinder liner is provided with a tapered hole that fits in a frustum shape.
  • the upper end of the inner ring of the cylinder liner is provided with a step.
  • the inner wall of the cylinder liner outer ring and the cylinder liner inner ring contacting the piston is provided with a plurality of uniformly distributed dimples.
  • the combined cylinder liner of the present invention has the following advantages:
  • the combined cylinder liner is provided with two spiral cooling grooves inside and outside, and the coolant flows spirally from the high temperature region of the cylinder liner to the low temperature region, which can effectively improve the heat dissipation efficiency of the cylinder liner and reduce the temperature during operation of the cylinder liner, thereby improving Piston, cylinder liner working environment.
  • the combined cylinder liner is provided with two inner and outer cooling slots.
  • the temperature of the outer cooling tank is lower than that of the inner layer, and it is not easy to cause cave erosion; although the inner cooling tank has a higher temperature, the high temperature part where the inner side is prone to cavitation is adopted. It is a high-strength material, which is resistant to the impact of blister rupture, and is less prone to cavitation, thereby improving the cavitation resistance of the cylinder liner.
  • the combined cylinder liner is provided with a replaceable inner cylinder liner in the easy-to-wear and vulnerable area of the cylinder liner;
  • the inner ring of the cylinder liner is made of high temperature resistant, wear-resistant and high-strength material, which can significantly improve the wear resistance of the cylinder liner.
  • Performance the outer ring of the cylinder liner is made of ordinary materials, which can reduce the material cost and processing cost of the cylinder liner.
  • the combined cylinder liner is provided with a small step at the inner end of the cylinder liner close to the cylinder head, which can facilitate the disassembly and replacement of the inner ring of the cylinder liner, and at the same time scrape off the carbon deposit on the piston ring, thereby reducing the piston and The wear of the cylinder liner.
  • the combined cylinder liner is provided with uniform fine pits on the inner surface of the frictional contact with the piston, which can store the lubricating fluid, so that the surface of the cylinder sleeve and the piston frictionally contact is easy to form an oil film, thereby improving the lubrication of the cylinder liner and the piston. Performance, reducing the friction between the cylinder liner and the piston, thereby reducing the friction loss of the engine.
  • Figure 1 is a schematic view of the structure of the present invention.
  • the combined cylinder liner of the present invention comprises a body 1, a cylinder liner outer ring 2 and a cylinder liner inner ring 3, the cylinder liner outer ring 2 is located in the body 1, and the cylinder liner outer ring 2 is close to the piston.
  • One end is provided with a stepped hole for installing the inner ring 3 of the cylinder liner, and the inner ring 3 of the cylinder liner is inserted into the outer ring 2 of the cylinder liner, and the inner ring 3 of the cylinder liner is fixed through the stepped hole.
  • the outer ring of the cylinder liner 2 is made of general material, and the inner ring of the cylinder liner 3
  • the utility model adopts a high-temperature resistant, wear-resistant and high-strength material, and the inner wall and the outer wall of the outer ring 2 of the cylinder liner are provided with a spiral cooling groove, and the two ends of the spiral cooling groove of the inner wall of the outer ring 2 of the cylinder liner are respectively connected with the inner coolant inlet pipe and
  • the inner coolant outlet pipe 4 is in communication, and the outer wall spiral cooling grooves of the cylinder liner outer ring 2 are respectively communicated with the outer layer coolant inlet pipe 5 and the outer layer coolant outlet pipe.
  • the length of the inner ring 3 of the cylinder liner is 0.4 to 0.6 of the length of the outer ring 2 of the cylinder liner, and the inner ring of the cylinder liner 3 and the upper end of the outer ring 2 of the cylinder liner is flush, the lower end of the inner ring 3 of the cylinder liner is a truncated cone shape, and the outer ring 2 of the cylinder liner is provided with a conical hole matched with a frustum shape, the inner ring of the cylinder liner and the outer ring of the cylinder liner For interference fit.
  • the upper end of the cylinder liner inner ring 3 is provided with a step for disassembling the carbon deposit on the cylinder liner inner ring 3 and the scraping piston ring.
  • the cylinder sleeve outer ring 2 and the inner wall of the cylinder liner inner ring 3 contacting the piston are provided with a plurality of evenly distributed dimples for storing lubricating fluid, so that the surface of the cylinder sleeve in frictional contact with the piston is likely to form an oil film.
  • the temperature of the outer cooling tank is lower than that of the inner layer, and it is not easy to cause cavitation; although the inner cooling tank has a relatively high temperature, the high temperature portion which is prone to cavitation on the inner side is a high-strength material, that is, it can resist blister rupture. The impact is not easy to produce cavitation, which improves the cavitation resistance of the cylinder liner.

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

Abstract

一种组合式气缸套，包括机体（1）、气缸套外圈（2）和气缸套内圈（3），气缸套外圈（2）位于机体（1）内，气缸套内圈（3）插入气缸套外圈（2）内，气缸套外圈（2）的内壁和外壁均设有螺旋形冷却槽，气缸套外圈（2）的内壁螺旋形冷却槽两端分别与内层冷却液进管和内层冷却液出管（4）连通，气缸套外圈（2）的外壁螺旋形冷却槽分别与外层冷却液进管（5）和外层冷却液出管连通。该组合式气缸套设有内外两个螺旋形冷却槽，冷却液由气缸套高温区域流向低温区域，能够有效地提高气缸套的散热效率，降低气缸套工作时的温度，进而改善活塞、气缸套工作环境。

Description

一种组合式气缸套 技术领域
本发明涉及一种组合式气缸套，属于内燃机领域。
背景技术
气缸套是活塞式内燃机的重要零部件之一，在内燃机工作时，气缸套承受螺栓预紧力、燃气爆压力、活塞侧推力以及周期性的热载荷等复杂载荷，在这些恶劣载荷的作用下，气缸套容易产生的损坏而影响内燃机正常工作；因此，气缸套的寿命对内燃机能否可靠稳定工作有很大的影响。
传统的气缸套为整体结构件，即气缸套由整体铸造后加工得到，为了保证气缸套的使用寿命，需要气缸套有足够的强度、耐高温性能和耐磨损性能，故而对制造气缸套的材料要求较高，从而加大了气缸套的成本。为了提高气缸套的性能，减少气缸套的成本，专利CN202165169U提出了一种耐磨缸套，即在气缸套内壁表面设有耐高温、耐磨损的纳米陶瓷颗粒层，该方法仅从提高了气缸套内壁表面材料的角度来提高气缸套的耐磨性能，而忽略了气缸套工作时高温环境对气缸套润滑性能的影响；专利CN104632450A和专利CN204458065U分别提出了一种带有刮碳环的气缸套，该方法仅从减少气缸内积碳的角度来提高气缸套的润滑性能，进而提高气缸套的耐磨性能，但忽略了气缸套材料本身耐磨性能，以及气缸套工作时高温环境对气缸套润滑性能的影响；专利CN2603854提出了一种复合气缸套，该方法仅从提高气缸套内表面材料强度的角度来提高气缸套的耐高温、耐磨性能，忽略了气缸套工作时高温环境对气缸套润滑性能的影响，而且气缸套下端部分的内壁工作环境较好，采用与上端一样的耐磨材料会加大成本。
发明内容
发明目的：为了克服现有技术中存在的不足，本发明提供一种组合式气缸套，能够降低气缸套的工作温度，提高气缸套的耐磨性能，提高气缸套的寿命，减少气缸套的制造成本。
技术方案：为实现上述目的，本发明的组合式气缸套，包括机体、气缸套外圈和气缸套内圈，所述气缸套外圈位于机体内，所述气缸套内圈插入气缸套外圈内，气缸套外圈的内壁和外壁均设有螺旋形冷却槽，气缸套外圈的内壁螺旋形冷却槽两端分别与内层冷却液进管和内层冷却液出管连通，气缸套外圈的外壁螺旋形冷却槽分别与外层冷却液进管和外层冷却液出管连通，内壁螺旋形冷却槽采用高强度材料。
作为优选，所述气缸套内圈的长度为气缸套外圈长度的0.4～0.6，气缸套内圈和气缸套外圈上端平齐。
作为优选，所述气缸套内圈的下端为锥台状，气缸套外圈设有与锥台状配合的圆锥孔。
作为优选，所述气缸套内圈的上端设有台阶。
作为优选，所述气缸套外圈和气缸套内圈与活塞接触的内壁设有若干个均匀分布的凹坑。
有益效果：本发明的组合式气缸套，具有以下优点：
(1)本组合式气缸套设有内外两个螺旋形冷却槽，冷却液由气缸套高温区域螺旋流向低温区域，能够有效地提高气缸套的散热效率，降低气缸套工作时的温度，进而改善活塞、气缸套工作环境。
(2)本组合式气缸套设有内外两个冷却槽，外层冷却槽的温度比内层低，不易产生穴蚀；内层冷却槽虽然温度较高，但内侧易发生穴蚀的高温部分采用的是高强度材料，即能抵抗水泡破裂的冲击，不易产生穴蚀，从而提高了气缸套的抗穴蚀性能。
(3)本组合式气缸套在气缸套易磨损、易破坏区域设有可更换的气缸套内圈；气缸套内圈采用耐高温、耐磨、高强度材料，可以显著提高气缸套的耐磨性能；气缸套外圈采用普通材料，可以减少了气缸套的材料成本和加工成本。
(4)本组合式气缸套在气缸套内圈靠近气缸盖的一端设有一圈小台阶，能够方便气缸套内圈的拆卸和更换，同时可以刮掉活塞环上的积碳，从而减少活塞与缸套的磨损。
(5)本组合式气缸套在与活塞摩擦接触的内表面设有均匀的细小凹坑，能够储存润滑液，从而使气缸套与活塞摩擦接触的表面易形成油膜，提高气缸套与活塞的润滑性能，减少气缸套与活塞的摩擦，进而减少发动机的摩擦损耗。
附图说明
图1为本发明的结构示意图。
具体实施方式
下面结合附图对本发明作更进一步的说明。
如图1所示，本发明的组合式气缸套，包括机体1、气缸套外圈2和气缸套内圈3，所述气缸套外圈2位于机体1内，气缸套外圈2靠近活塞的一端设有用来安装气缸套内圈3的阶梯孔，气缸套内圈3插入气缸套外圈2内通过阶梯孔固定气缸套内圈3，气缸套外圈2采用一般材料，气缸套内圈3采用耐高温、耐磨、高强度材料，气缸套外圈2的内壁和外壁均设有螺旋形冷却槽，气缸套外圈2的内壁螺旋形冷却槽两端分别与内层冷却液进管和内层冷却液出管4连通，气缸套外圈2的外壁螺旋形冷却槽分别与外层冷却液进管5和外层冷却液出管连通。
在本发明中，所述气缸套内圈3的长度为气缸套外圈2长度的0.4～0.6，气缸套内圈 3和气缸套外圈2上端平齐，所述气缸套内圈3的下端为锥台状，气缸套外圈2设有与锥台状配合的圆锥孔，气缸套内圈与气缸套外圈为过盈配合。
在本发明中，所述气缸套内圈3的上端设有台阶，用于拆卸气缸套内圈3和刮活塞环上的积碳。所述气缸套外圈2和气缸套内圈3与活塞接触的内壁设有若干个均匀分布的凹坑，储存润滑液，从而使气缸套与活塞摩擦接触的表面易形成油膜。
在本发明中，外层冷却槽的温度比内层低，不易产生穴蚀；内层冷却槽虽然温度较高，但内侧易发生穴蚀的高温部分采用的是高强度材料，即能抵抗水泡破裂的冲击，不易产生穴蚀，从而提高了气缸套的抗穴蚀性能。
以上所述仅是本发明的优选实施方式，应当指出：对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (5)

  1. 一种组合式气缸套，其特征在于：包括机体、气缸套外圈和气缸套内圈，所述气缸套外圈位于机体内，所述气缸套内圈插入气缸套外圈内，气缸套外圈的内壁和外壁均设有螺旋形冷却槽，气缸套外圈的内壁螺旋形冷却槽两端分别与内层冷却液进管和内层冷却液出管连通，气缸套外圈的外壁螺旋形冷却槽分别与外层冷却液进管和外层冷却液出管连通。
  2. 根据权利要求1所述的组合式气缸套，其特征在于：所述气缸套内圈的长度为气缸套外圈长度的0.4～0.6，气缸套内圈和气缸套外圈上端平齐。
  3. 根据权利要求2所述的组合式气缸套，其特征在于：所述气缸套内圈的下端为锥台状，气缸套外圈设有与锥台状配合的圆锥孔，气缸套内圈与气缸套外圈为过盈配合。
  4. 根据权利要求1所述的组合式气缸套，其特征在于：所述气缸套内圈的上端设有台阶。
  5. 根据权利要求1所述的组合式气缸套，其特征在于：所述气缸套外圈和气缸套内圈与活塞接触的内壁设有若干个均匀分布的凹坑。
PCT/CN2016/077421 2016-01-28 2016-03-25 一种组合式气缸套 Ceased WO2017128510A1 (zh)

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CN201610060683.9 2016-01-28

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CN112081680B (zh) * 2020-10-20 2022-03-15 安庆中船柴油机有限公司 一种单缸卧式柴油机湿式缸套
CN114320643A (zh) * 2021-12-31 2022-04-12 江苏紫金动力股份有限公司 一种柴油机基体缸套及其生产工艺
CN117345729A (zh) * 2023-12-04 2024-01-05 四川力能超高压设备有限公司 缸体及温等静压机

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