WO2009132507A1 - 一种发动机机油限压阀 - Google Patents

一种发动机机油限压阀 Download PDF

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Publication number
WO2009132507A1
WO2009132507A1 PCT/CN2009/000188 CN2009000188W WO2009132507A1 WO 2009132507 A1 WO2009132507 A1 WO 2009132507A1 CN 2009000188 W CN2009000188 W CN 2009000188W WO 2009132507 A1 WO2009132507 A1 WO 2009132507A1
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WO
WIPO (PCT)
Prior art keywords
limiting valve
pressure limiting
oil
engine
pressure
Prior art date
Application number
PCT/CN2009/000188
Other languages
English (en)
French (fr)
Inventor
肖亨琳
Original Assignee
无锡开普机械有限公司
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 无锡开普机械有限公司 filed Critical 无锡开普机械有限公司
Publication of WO2009132507A1 publication Critical patent/WO2009132507A1/zh

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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
    • F01M1/16—Controlling lubricant pressure or quantity

Definitions

  • This invention relates to an engine oil pressure limiting valve, and more particularly to a pressure limiting valve installed in a main oil passage of an engine gear compartment cover, which functions to limit the maximum pressure of the oil.
  • the pump oil pressure of the oil pump is increased as the engine speed increases, and when the oil line is blocked in the lubrication system: if the bearing clearance is too small or the viscosity of the used oil is too large, Increase the oil supply pressure. Therefore, the maximum pressure of the oil in the main oil passage of the engine must be limited to ensure safety.
  • the traditional pressure limiting device is in the oil pump.
  • a pressure limiting valve is provided in order to limit the oil pressure on the oil discharge side to the set pressure.
  • the pressure limiting valve drain hole is opened too large to discharge the overflow oil to the outside of the oil pump, and the overflow oil is sharply adjusted during pressure regulation. Exhaust, self-excited vibration occurs, and some oil that returns the overflow oil to the oil pump of the oil pump. Between the oil inlet side and the oil outlet side of the oil pump, the temperature of the lubricating oil rises sharply.
  • the object of the present invention is to overcome the above-mentioned deficiencies, thereby providing an engine oil pressure limiting valve, which can avoid the self-excited vibration phenomenon caused by the oil pump pressure limiting and the adverse effect of the oil temperature rise; and can effectively control the oil main oil
  • the pressure in the middle makes the engine work normally.
  • the main solution of the present invention is achieved as follows - the main features of the present invention include a pressure limiting valve body, a pressure limiting valve plunger, a pressure limiting valve spring, a sealing gasket and a pressure limiting valve screw plug in the pressure limiting valve body Install the pressure limiting valve plunger, pressure limiting valve spring, ferrule, and pressure limiting valve plug in sequence.
  • the pressure limiting valve screw plug extends out of the pressure limiting valve body, and the pressure limiting valve screw plug extends outside the gear chamber cover.
  • a plurality of oil return holes are disposed in the pressure limiting wide plunger.
  • the pressure limiting valve body is provided with a plurality of pressure limiting valve drain holes.
  • the oil return hole is aligned with the pressure limiting wide oil drain hole.
  • the pressure limiting valve body is provided with a plurality of pressure limiting valve drain holes, and the total passage area of the plurality of pressure limiting valve drain holes is equal to the opening area of the pressure limiting valve.
  • the invention has the following advantages compared with the prior art - the invention is simple, compact and reasonable in structure; since the pressure limiting valve is directly mounted on the gear chamber cover In the main oil passage of the oil, a plurality of oil drain holes for discharging the overflow oil generated during the pressure limiting are disposed in the pressure limiting valve, and the total passage area of the plurality of oil drain holes is equal to the opening area of the oil pressure limiting valve. Therefore, the self-excited vibration phenomenon generated by the oil pump pressure limiting and the adverse effect of the oil temperature rise are avoided. Since the pressure limiting valve screw plug of the pressure limiting valve is disposed outside the gear chamber cover, the pressure limiting valve is convenient to process, install, debug and maintain.
  • FIG. 1 is a perspective view of the overall machine of the present invention.
  • Fig. 2 is a view showing the outline of main parts of the lubrication system in the state of use of the present invention.
  • Figure 3 is a partial view, partly in the direction of use of the pressure limiting valve of the present invention.
  • Figure 4 is a cross-sectional view taken along line B to B of the state in which the pressure limiting valve of the present invention is used.
  • Figure 5 is a cross-sectional view taken along line F to F of the pressure limiting port of the pressure limiting valve of the present invention.
  • the invention mainly comprises an engine room gear cover 1, a gear chamber cover oil main oil passage 2, an oil pump high pressure oil chamber 3, a pressure limiting valve plunger 4, a pressure limiting ⁇ spring 5, a pressure limiting valve screw plug 6, a sealing washer 7.
  • a pressure limiting valve is installed in the main oil passage 2 of the gear chamber cover of the engine, and the main oil passage 2 of the gear chamber cover oil is directly connected to the high pressure oil chamber 3 of the oil pump.
  • the pressure limiting valve of the present invention is composed of a pressure limiting ⁇ plunger 4, a pressure limiting valve spring 5, a sealing gasket 7 and a pressure limiting valve screw 6.
  • a pressure limiting valve plunger 4, a pressure limiting valve spring 5, a sealing gasket 7, and a pressure limiting valve screw plug 6 are sequentially installed in the pressure limiting valve body 11, and the pressure limiting valve screw plug 4 extends out of the pressure limiting valve body 11.
  • the pressure limiting valve damper 4 is outside the gear chamber cover 1.
  • a plurality of pressure limiting valve drain holes 8 and 9 a plurality of pressure limiting valve drain holes 8 and 9 have a total passage area equal to the port area of the pressure limiting valve.
  • a plurality of oil return holes 14 are provided in the pressure limiting valve plunger 4, and the oil return holes 14 in the pressure limiting valve plunger 4 are just aligned with the pressure limiting valve drain holes 8, 9 during installation.
  • the pressure limiting valve of the present invention can effectively control the pressure in the main oil of the oil to make the engine operate normally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Description

一种发动机机油限压阀
技术领域
本发明涉及一种发动机机油限压阀， 具体地说是安装在发动机齿轮室盖 机油主油道中的一个限压阔， 其作用是限制机油的最高压力。
背景技术
在已有技术中， 发动机工作时， 机油泵的泵油压力是随发动机转速增加 而升高的， 并且当润滑系中油路淤塞： 如轴承间隙过小或使用的机油粘度过 大时， 也会使供油压力升高。 因此， 必须限制发动机主油道中机油的最高压 力， 以确保安全。 传统的限压装置是在机油泵中。 为了将出油侧的机油压力 限制到所设定压力而设置限压阀， 有的为了将溢流油排到油泵外部而将限压 阀泄油孔开过大， 调压时溢流油急剧排出， 发生自激振动现象， 还有的将溢 流油返回到机油泵的进油 这样润滑油.就在机油泵进油侧和出油侧之间循 i , 造成润滑油温度急剧升高。
发明内容
本发明的目的在于克服上述不足之处，从而提供一种发动机机油限压阀， 能避免机油泵限压时产生的自激振动现象和机油温升高的不利影响； 能有效 的控制机油主油到中的压力， 使发动机正常工作。
. 本发明的主要解决方案是这样实现的- 本发明主要特征是包括限压阀阀体、 限压阀柱塞、 限压阀弹簧、 密封垫 圈和限压阀螺塞， 在限压阀阀体内依次安装限压阀柱塞、 限压阀弹簧、 密封 垫圈、 及限压阀螺塞。
所述的限压阀螺塞伸出限压阀阀体， 且限压阀螺塞伸在齿轮室盖外面。 所述的限压阔柱塞中设置多个回油孔。
所述的限压阀阀体中设有多个限压阀泄油孔。
所述的回油孔与限压阔泄油孔对齐。 所述的限压阀阀体中设有多个限压 阀泄油孔， 且多千个限压阀泄油孔的通道总面积等于限压阀的开口面积。
本发明与已有技术相比具有以下优点- 本发明结构简单、 紧凑， 合理； 由于限压阀是直接安装在齿轮室盖上机 油主油道中， 并在限压阀中设置了若干个将限压时产生的溢流油排出的泄油 孔， 若干个泄油孔的通道总面积等于机油限压阀阀门的开口面积。 因此避免 了机油泵限压时产生的自激振动现象和机油温升高的不利影响。 由于限压阀 的限压阀螺塞设置在齿轮室盖外面， 因此限压阀加工， 安装， 调试， 维护都 十分方便。
附图说明
图 1是本发明使用状态整机外形图。
图 2是本发明使用状态下润滑系统主要部件外形图。
图 3是本发明限压阀使用状态的 P向局部视图。
图 4是本发明限压阀使用状态的 B〜B剖视图。
图 5是本发明限压阀泄油孔的 F〜F剖视图。
具体实施方式
下面本发明将结合附图中的实施例作进一步描述：
. 本发明主要包括发动机的齿轮室盖 1、齿轮室盖机油主油道 2、机油泵高 压油腔 3、 限压阀柱塞 4、 限压阓弹簧 5、 限压阀螺塞 6、 密封垫圈 7、 泄油 孔 8、泄油孔 9、 齿轮室 10、 限压阀阀体 11、机油泵 12、机体主油道 13、 限 压阀柱塞回油孔 14等。
如图 1〜图 4所示： 在发动机的齿轮室盖机油主油道 2中安装一个限压 阀， 此齿轮室盖机油主油道 2与机油泵高压油腔 3直接相通。
本发明限压阀由限压闳柱塞 4、 限压阀弹簧 5、 密封垫圈 7和限压阀螺 塞 6组成。在限压阀阀体 11内依次安装限压阀柱塞 4、 限压阀弹簧 5、密封 垫圈 7、 及限压阀螺塞 6, 限压阀螺塞 4伸出限压阀阀体 11。 且限压阀蟪塞 4仲在齿轮室盖 1外面。 在限压阀阀体 11中， 设置若干个限压阀泄油孔 8 和 9, 若干个限压阀泄油孔 8和 9的通道总面积等于限压阀的幵口面积。 在 限压阀柱塞 4中设置若干个回油孔 14， 安装时此限压阀柱塞 4中的回油孔 14刚好与限压阀泄油孔 8、 9对齐。
当机油泵 12高速运转时机油迅速从机油泵高压油腔 3中流出进入齿轮室 盖板机油主油道 2中， 机油压力随着发动机转速的增加而不断增加， 当齿轮 室盖板机油油道 2中的机油压力超过设定的预定上限时， 克服了限压阀弹簧 5的压紧力， 推动限压阀柱塞 4, 将逐渐的打开限压阀泄油孔 8和 9, 机油 从限压阀泄油孔 8和 9中全部排到齿轮室 10中， 使机体主油道 13中的机油 卸压，待机体主油道 13中的机油压力下降到设定的正常值后限压阀关闭。此 时限压阀柱塞 4中的遗留机油通过限压阀柱塞回油孔 14排到齿轮室 10中。
如上所述， 本发明的限压阀能有效的控制机油主油中的压力， 使发动机 正常工作。

Claims

权 利 要 求
1、 一种发动机机油限压阀， 其特征是包括限压阀阀体 （11 )、 限压阔柱 塞 （4)、 限压阀弹簧 （5)、 密封垫圈 （7)、 和限压阀螺塞 （6)， 在限压阀阀 体（11 ) 内依次安装限压阀柱塞（4)、 限压阀弹簧（5)、 密封垫圈 （7)及限 压阀螺塞 （6)。
2、根据权利要求 1所述的一种发动机机油限压阀，其特征在于所述的限 压阀螺塞 （4)伸出限压阀阀体（11 )， 且限压阀螺塞（4)伸在齿轮室盖（1 ) 外面。
3、根据权利要求 1或 2所述的一种发动机机油限压阀，其特征在于所述 的限压阀柱塞 （4) 中设置多个回油孔 （14)。
4、根据权利要求 1所述的一种发动机机油限压阀，其特征在于所述的限 压阀阀体 （11 ) 中设有多个限压阀泄油孔。
5、根据权利要求 3所述的一种发动机机油限压阀，其特征在于所述的回 油孔 （14) 与限压阔泄油孔对齐。
PCT/CN2009/000188 2008-04-30 2009-02-23 一种发动机机油限压阀 WO2009132507A1 (zh)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114673916A (zh) * 2022-03-17 2022-06-28 芜湖钻石航空发动机有限公司 一种航空发动机机油泵的限压阀

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101280735A (zh) * 2008-04-30 2008-10-08 无锡开普机械有限公司 一种发动机的齿轮室盖
CN101270681A (zh) * 2008-04-30 2008-09-24 无锡开普机械有限公司 一种发动机机油限压阀
CN102966408A (zh) * 2012-11-05 2013-03-13 浙江新柴股份有限公司 活塞式机油限压阀装置
CN103133080A (zh) * 2013-02-16 2013-06-05 洛阳拖拉机研究所有限公司 发动机机油泵限压阀及其润滑系统
CN103644039B (zh) * 2013-11-07 2016-11-09 山西新天地发动机制造有限公司 发动机机油限压泄压回油系统
CN108488608A (zh) * 2018-05-24 2018-09-04 湖南机油泵股份有限公司 一种限压阀柱塞以及改进的机油泵限压阀

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CN2549182Y (zh) * 2002-06-22 2003-05-07 郑国璋 发动机机油限压回油装置
CN2854292Y (zh) * 2005-12-27 2007-01-03 浙江平柴泵业有限公司 一种新颖发动机机油泵
CN101270681A (zh) * 2008-04-30 2008-09-24 无锡开普机械有限公司 一种发动机机油限压阀
CN201198774Y (zh) * 2008-04-30 2009-02-25 无锡开普机械有限公司 一种发动机机油限压阀

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CN2095031U (zh) * 1991-04-04 1992-02-05 杭州汽车发动机厂 一种内含调压阀的机油滤清器
CN1065410A (zh) * 1991-04-04 1992-10-21 杭州汽车发动机厂 一种内含调压阀的机油滤清器
CN2549182Y (zh) * 2002-06-22 2003-05-07 郑国璋 发动机机油限压回油装置
CN2854292Y (zh) * 2005-12-27 2007-01-03 浙江平柴泵业有限公司 一种新颖发动机机油泵
CN101270681A (zh) * 2008-04-30 2008-09-24 无锡开普机械有限公司 一种发动机机油限压阀
CN201198774Y (zh) * 2008-04-30 2009-02-25 无锡开普机械有限公司 一种发动机机油限压阀

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114673916A (zh) * 2022-03-17 2022-06-28 芜湖钻石航空发动机有限公司 一种航空发动机机油泵的限压阀

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