WO2014107824A1 - Forced lubrication roller tappet of high-pressure common rail pump - Google Patents

Forced lubrication roller tappet of high-pressure common rail pump Download PDF

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Publication number
WO2014107824A1
WO2014107824A1 PCT/CN2013/001116 CN2013001116W WO2014107824A1 WO 2014107824 A1 WO2014107824 A1 WO 2014107824A1 CN 2013001116 W CN2013001116 W CN 2013001116W WO 2014107824 A1 WO2014107824 A1 WO 2014107824A1
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Prior art keywords
tappet
roller
passage
common rail
notch
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PCT/CN2013/001116
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French (fr)
Chinese (zh)
Inventor
肖亨琳
陶佳
Original Assignee
无锡开普机械有限公司
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Publication of WO2014107824A1 publication Critical patent/WO2014107824A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston

Definitions

  • the invention relates to the technical field of in-line high pressure common rail pumps, in particular to a forced lubrication type roller tappet of a high pressure common rail pump.
  • the in-line high-pressure common rail pump adopts the mechanism of the cam-driven roller tappet, so that the sliding friction between the pump body and the tappet body, the tappet body and the roller pin, the roller pin and the roller is generated, and the lubricating oil is surrounded by the cam.
  • the lubrication chamber is slid onto the tappet with the rotation of the cam, and the friction surface is obtained by the matching clearance of the sliding parts, thereby achieving lubrication.
  • This mechanism can not effectively make the lubricating oil enter the matching gap, which is likely to cause uneven distribution of the lubricating oil. As a result, the lubrication is insufficient, causing burns and wear of the parts, which seriously affects the service life of the fuel injection pump.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a forced lubrication type roller tappet of a high pressure common rail pump with simple structure, ingenious and reasonable, lubricating oil entering the friction surface through the lubricating oil passage, under pressure Under the action, the fitting clearance of the part enters, and then flows into the lubrication cavity, and the lubricating oil can be distributed on all the friction surfaces, thereby effectively improving the lubrication effect.
  • a forced lubrication type roller tappet of a high pressure common rail pump a plurality of tappets are arranged side by side on the pump body, and a rotatable roller pin is arranged in each of the tappet bodies.
  • the roller pin is provided with a roller bushing and a roller in sequence, and is characterized in that: a notch and a ring groove are respectively arranged on the two end faces of the tappet body, and an oil passage is arranged on the pump body between the two adjacent tappet bodies.
  • the oil inlet passage communicates with the notch, the notch communicates with the ring groove, the lubricating oil passage is disposed on the roller pin, and the oil inlet passage and the oil outlet passage are connected to the lubricating oil passage.
  • the oil inlet is also connected to the lack of
  • the lubricating oil passage includes a threaded groove, and a first annular circular groove and a second annular circular groove disposed at two ends of the roller pin, and the two ends of the threaded groove respectively communicate with the first annular circular groove, Two circular circular grooves.
  • the first annular circular groove communicates with the oil passage
  • the second annular circular groove communicates with the oil passage
  • the invention has the advantages that: the forced lubrication type roller tappet of the high pressure common rail pump of the invention is improved by the prior art, and the lubricating oil channel is arranged on the roller pin, and the lubricating body is arranged on the holding body.
  • the oil inlet and the oil outlet which are matched with the lubricating oil passage can be distributed to all the friction surfaces with other related technical means, and the contact shape of the pump body parts is improved, so that the lubricating oil is evenly distributed and effective. Improved lubrication.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Fig. 1 including camshaft 1, pump body 2, ring groove 3, oil outlet 4, first annular groove 5, threaded groove 6, oil inlet 7, notch 8, oil passage 9, and The living body 10, the roller 11, the roller bushing 12, the roller pin 13, the end face 14, the lubricating oil passage 15, the second annular circular groove 16, and the like.
  • the present invention is a forced lubrication type roller tappet of a high pressure common rail pump.
  • a plurality of tappet bodies 10 are arranged side by side on the pump body 2, and each of the tappet bodies 10 is provided with a rotatable
  • the roller pin 13 and the roller pin 13 are provided with a roller bushing 12 and a roller 11 in sequence, and a notch 8 and a ring groove 3 are respectively disposed on the two end faces of the tappet body 10, between the adjacent two tappet bodies 10
  • the pump body 2 is provided with an oil inlet passage 9, the oil inlet passage 9 communicates with the notch 8, the notch 8 communicates with the annular groove 3, the lubricating oil passage 15 is disposed on the roller pin 13, and the tappet body 10 is provided with the lubricating oil passage 15
  • the oil inlet 7, the oil outlet 4, and the oil inlet 7 are also connected to the gap 8.
  • the lubricating oil passage 15 includes a threaded groove 6 and a first annular circular groove 5 and a second annular circular groove 16 disposed at two ends of the roller pin 13.
  • the two ends of the threaded groove 6 respectively communicate with the first annular circular groove 5 and the second annular ring.
  • the circular groove 16, the first annular circular groove 5 communicates with the oil passage 4, and the second annular circular groove 16 communicates with the oil inlet 7.
  • the tappet is mounted in the tappet hole of the pump body 2 and is located on the camshaft 1.
  • the tappet includes a roller pin 13, a roller 11, a tappet 10, a roller bushing 12, and a roller pin.
  • the end faces 14 of the 13 are set to be spherical, and the total length L of the roller pin 13, the width h of the cam of the camshaft 1, and the diameter of the cavity of the pump body 2 on which the tappet is mounted 4>d must satisfy h ⁇ L ⁇ d.
  • the working process of the present invention is as follows:
  • the camshaft 1 drives the parallel column to move up and down, and simultaneously drives the roller 11 to rotate in the tappet body 10 to drive the roller bushing 12 and the roller pin 13.
  • the notch 8 is always in communication with the oil inlet passage 9.
  • the lubricating oil passes through the notch 8, a part of which enters the ring groove 3 for lubricating the contact surface of the pump body 2 with the tappet body 10, and the other part enters the lubricating oil passage 15 of the roller pin 13 through the oil inlet 7 from the second annular circular groove 16
  • the inlet is injected into the threaded groove 6 and then enters the first annular circular groove 5.
  • the lubricating oil passes through the oil outlet 4, enters the lubrication chamber, and works on the roller pin 13.
  • the lubricating oil is distributed to form a lubricating oil film, so that the roller bushing 12 and the roller pin 13 are in contact with each other. Effectively lubricates and effectively reduces wear. Lubricants can also be squeezed into the fit clearance under pressure to effectively lubricate the moving mechanism. Excess lubricant will be returned to the engine from the lubrication chamber.
  • the forced lubrication type roller tappet of the high pressure common rail pump of the invention is improved by the prior art, and the lubricating oil passage is arranged on the roller pin, and the oil inlet passage and the oil outlet which are matched with the lubricating oil passage are arranged on the holding body.
  • Road combined with other related technical means, can achieve the distribution of lubricating oil to all the friction surfaces, improve the contact shape of the pump parts, make the distribution of lubricating oil uniform, and effectively improve the lubrication effect.

Abstract

A forced lubrication roller tappet of a high-pressure common rail pump. A rotatable roller shaft (13) is arranged within a tappet body (10). A roller sleeve (12) and a roller (11) are sequentially sleeved onto the roller shaft (13). A notch (8) and a circular groove (3) respectively are provided on two end surfaces of the tappet body (10). An oil inlet passage (9) is provided on a pump body (2) between two adjacent tappet bodies (10). The oil inlet passage (9) is in communication with the notch (8). The notch (8) is in communication with the circular groove (3). A lubricating oil passage (15) is provided on the roller shaft (13). An oil inlet passage (7) and an oil outlet passage (4) that are in communication with the lubricating oil passage (15) are provided on the tappet body (10). The apparatus allows a lubricating oil to be distributed to all friction surfaces, thus increasing lubrication effects.

Description

说 明 书 高压共轨泵的强制润滑式滚子挺柱  Description Forced Lubrication Roller Tappet for High Pressure Common Rail Pumps
技术领域 Technical field
本发明涉及直列式高压共轨泵技术领域， 具体地说是一种高压共轨泵的 强制润滑式滚子挺柱。  The invention relates to the technical field of in-line high pressure common rail pumps, in particular to a forced lubrication type roller tappet of a high pressure common rail pump.
背景技术 Background technique
直列式高压共轨泵均采用凸轮驱动滚子挺柱这种机构， 从而使泵体与挺 柱体、 挺柱体与滚轮销、 滚轮销与滚轮之间都产生滑动摩擦， 润滑油由凸轮 周围的润滑腔， 随凸轮的旋转甩到挺柱上， 通过相对滑动零件的配合间隙进 入摩擦面， 从而实现润滑， 这种机构不能有效地使润滑油进入配合间隙中， 容易造成润滑油分布不均匀而导致润滑不足，造成零件的烧伤和磨损等故障， 严重影响喷油泵的使用寿命。  The in-line high-pressure common rail pump adopts the mechanism of the cam-driven roller tappet, so that the sliding friction between the pump body and the tappet body, the tappet body and the roller pin, the roller pin and the roller is generated, and the lubricating oil is surrounded by the cam. The lubrication chamber is slid onto the tappet with the rotation of the cam, and the friction surface is obtained by the matching clearance of the sliding parts, thereby achieving lubrication. This mechanism can not effectively make the lubricating oil enter the matching gap, which is likely to cause uneven distribution of the lubricating oil. As a result, the lubrication is insufficient, causing burns and wear of the parts, which seriously affects the service life of the fuel injection pump.
发明内容 Summary of the invention
本发明的目的在于克服现有技术中存在的不足， 提供一种结构简单、 巧 妙、 合理的高压共轨泵的强制润滑式滚子挺柱， 润滑油通过润滑油道进入摩 擦面， 在压力的作用下进入零件的配合间隙， 然后流入润滑腔， 润滑油能够 在所有的摩擦面分布， 有效地提高了润滑效果。  The object of the present invention is to overcome the deficiencies in the prior art, and to provide a forced lubrication type roller tappet of a high pressure common rail pump with simple structure, ingenious and reasonable, lubricating oil entering the friction surface through the lubricating oil passage, under pressure Under the action, the fitting clearance of the part enters, and then flows into the lubrication cavity, and the lubricating oil can be distributed on all the friction surfaces, thereby effectively improving the lubrication effect.
按照本发明提供的技术方案： 一种高压共轨泵的强制润滑式滚子挺柱， 在泵体上并列安装多个挺柱体， 在每个挺柱体内设置有可以转动的滚轮销， 所述滚轮销上依次套装滚轮衬套、 滚轮， 其特征在于： 在挺柱体的两个端面 上分别设置缺口、 圈槽， 在相邻两个挺柱体之间的泵体上设置进油通道， 所 述进油通道连通缺口， 所述缺口与圈槽连通， 滚轮销上设置润滑油道， 挺柱 体上设置有与所述润滑油道相连通的进油道、 出油道， 所述进油道还连通缺 According to the technical solution provided by the present invention: a forced lubrication type roller tappet of a high pressure common rail pump, a plurality of tappets are arranged side by side on the pump body, and a rotatable roller pin is arranged in each of the tappet bodies. The roller pin is provided with a roller bushing and a roller in sequence, and is characterized in that: a notch and a ring groove are respectively arranged on the two end faces of the tappet body, and an oil passage is arranged on the pump body between the two adjacent tappet bodies. The oil inlet passage communicates with the notch, the notch communicates with the ring groove, the lubricating oil passage is disposed on the roller pin, and the oil inlet passage and the oil outlet passage are connected to the lubricating oil passage. The oil inlet is also connected to the lack of
P。 P.
作为本发明的进一步改进， 所述润滑油道包括螺纹型槽、 及设置于滚轮 销两端的第一环形圆槽、 第二环形圆槽， 螺纹型槽两端分别连通第一环形圆 槽、 第二环形圆槽。  As a further improvement of the present invention, the lubricating oil passage includes a threaded groove, and a first annular circular groove and a second annular circular groove disposed at two ends of the roller pin, and the two ends of the threaded groove respectively communicate with the first annular circular groove, Two circular circular grooves.
作为本发明的进一步改进， 所述第一环形圆槽连通出油道， 所述第二环 形圆槽连通进油道。  As a further improvement of the present invention, the first annular circular groove communicates with the oil passage, and the second annular circular groove communicates with the oil passage.
本发明与现有技术相比， 优点在于： 本发明高压共轨泵的强制润滑式滚 子挺柱通过对现有技术进行改进， 在滚轮销上设置润滑油道、 在挺住体上设 置与润滑油道相配合的进油道和出油道， 配合其他相关技术手段， 可以实现 润滑油能够分布到所有的摩擦面， 改善了泵体部件的接触形态， 使得润滑油 分布均匀， 有效提高了润滑效果。 Compared with the prior art, the invention has the advantages that: the forced lubrication type roller tappet of the high pressure common rail pump of the invention is improved by the prior art, and the lubricating oil channel is arranged on the roller pin, and the lubricating body is arranged on the holding body. The oil inlet and the oil outlet which are matched with the lubricating oil passage can be distributed to all the friction surfaces with other related technical means, and the contact shape of the pump body parts is improved, so that the lubricating oil is evenly distributed and effective. Improved lubrication.
附图说明 DRAWINGS
图 1为本发明的结构示意图。  Figure 1 is a schematic view of the structure of the present invention.
具体实施方式 detailed description
下面结合具体附图和实施例对本发明作进一步说明。  The invention will now be further described with reference to the specific drawings and embodiments.
如图 1所示， 包括凸轮轴 1、 泵体 2、 圈槽 3、 出油道 4、 第一环形圆槽 5、 螺紋型槽 6、 进油道 7、 缺口 8、 进油通道 9、 挺住体 10、 滚轮 11、 滚轮 衬套 12、 滚轮销 13、 端面 14、 润滑油道 15、 第二环形圆槽 16等。  As shown in Fig. 1, including camshaft 1, pump body 2, ring groove 3, oil outlet 4, first annular groove 5, threaded groove 6, oil inlet 7, notch 8, oil passage 9, and The living body 10, the roller 11, the roller bushing 12, the roller pin 13, the end face 14, the lubricating oil passage 15, the second annular circular groove 16, and the like.
如图 1所示， 本发明是一种高压共轨泵的强制润滑式滚子挺柱， 在泵体 2上并列安装多个挺柱体 10， 在每个挺柱体 10 内设置有可以转动的滚轮销 13, 滚轮销 13上依次套装滚轮衬套 12、滚轮 11， 在挺柱体 10的两个端面上 分别设置缺口 8、 圈槽 3， 在相邻两个挺柱体 10之间的泵体 2上设置进油通 道 9， 进油通道 9连通缺口 8， 缺口 8与圈槽 3连通， 滚轮销 13上设置润滑 油道 15， 挺柱体 10上设置有与润滑油道 15相连通的进油道 7、 出油道 4， 进油道 7还连通缺口 8。 润滑油道 15包括螺紋型槽 6、 及设置于滚轮销 13 两端的第一环形圆槽 5、 第二环形圆槽 16， 螺紋型槽 6两端分别连通第一环 形圆槽 5、 第二环形圆槽 16， 第一环形圆槽 5连通出油道 4， 第二环形圆槽 16连通进油道 7。  As shown in FIG. 1, the present invention is a forced lubrication type roller tappet of a high pressure common rail pump. A plurality of tappet bodies 10 are arranged side by side on the pump body 2, and each of the tappet bodies 10 is provided with a rotatable The roller pin 13 and the roller pin 13 are provided with a roller bushing 12 and a roller 11 in sequence, and a notch 8 and a ring groove 3 are respectively disposed on the two end faces of the tappet body 10, between the adjacent two tappet bodies 10 The pump body 2 is provided with an oil inlet passage 9, the oil inlet passage 9 communicates with the notch 8, the notch 8 communicates with the annular groove 3, the lubricating oil passage 15 is disposed on the roller pin 13, and the tappet body 10 is provided with the lubricating oil passage 15 The oil inlet 7, the oil outlet 4, and the oil inlet 7 are also connected to the gap 8. The lubricating oil passage 15 includes a threaded groove 6 and a first annular circular groove 5 and a second annular circular groove 16 disposed at two ends of the roller pin 13. The two ends of the threaded groove 6 respectively communicate with the first annular circular groove 5 and the second annular ring. The circular groove 16, the first annular circular groove 5 communicates with the oil passage 4, and the second annular circular groove 16 communicates with the oil inlet 7.
本发明在使用过程中， 挺柱装在泵体 2上挺柱孔中， 并坐落在凸轮轴 1 上， 挺柱包括滚轮销 13、 滚轮 11、 挺柱体 10、 滚轮衬套 12， 滚轮销 13的两 端面 14设置为球面， 并且滚轮销 13的总长度 L， 凸轮轴 1凸轮的宽度 h， 以 及泵体 2安装挺柱的腔体直径 4> d, 必须满足 h< L< d。  In the process of use, the tappet is mounted in the tappet hole of the pump body 2 and is located on the camshaft 1. The tappet includes a roller pin 13, a roller 11, a tappet 10, a roller bushing 12, and a roller pin. The end faces 14 of the 13 are set to be spherical, and the total length L of the roller pin 13, the width h of the cam of the camshaft 1, and the diameter of the cavity of the pump body 2 on which the tappet is mounted 4>d must satisfy h<L<d.
如图 1所示， 本发明工作过程如下： 凸轮轴 1带动并列安装的挺柱上下 运动， 同时带动滚轮 11在挺柱体 10内转动， 带动滚轮衬套 12、 滚轮销 13。 挺柱体 10在泵体 2内做上下运动的时候，缺口 8始终与进油通道 9相通。润 滑油通过缺口 8， 一部分进入圈槽 3， 用来润滑泵体 2与挺柱体 10接触面， 另一部分通过进油道 7进入滚轮销 13的润滑油道 15，从第二环形圆槽 16进 入， 注入到螺紋型槽 6 , 再进入第一环形圆槽 5， 由于出油道 4与第一环形圆 槽 5相连， 使得润滑油通过出油道 4， 进入润滑腔， 在滚轮销 13工作的时候 分布润滑油， 形成润滑油膜， 从而使滚轮衬套 12与滚轮销 13接触面得到有 效地润滑， 有效减少磨损， 润滑油还可以在压力的作用下挤到配合间隙内， 有效地润滑运动机构， 多余的润滑油会由润滑腔再返回发动机。 As shown in FIG. 1, the working process of the present invention is as follows: The camshaft 1 drives the parallel column to move up and down, and simultaneously drives the roller 11 to rotate in the tappet body 10 to drive the roller bushing 12 and the roller pin 13. When the tappet 10 is moved up and down in the pump body 2, the notch 8 is always in communication with the oil inlet passage 9. The lubricating oil passes through the notch 8, a part of which enters the ring groove 3 for lubricating the contact surface of the pump body 2 with the tappet body 10, and the other part enters the lubricating oil passage 15 of the roller pin 13 through the oil inlet 7 from the second annular circular groove 16 The inlet is injected into the threaded groove 6 and then enters the first annular circular groove 5. Since the oil outlet 4 is connected to the first annular circular groove 5, the lubricating oil passes through the oil outlet 4, enters the lubrication chamber, and works on the roller pin 13. The lubricating oil is distributed to form a lubricating oil film, so that the roller bushing 12 and the roller pin 13 are in contact with each other. Effectively lubricates and effectively reduces wear. Lubricants can also be squeezed into the fit clearance under pressure to effectively lubricate the moving mechanism. Excess lubricant will be returned to the engine from the lubrication chamber.
本发明高压共轨泵的强制润滑式滚子挺柱通过对现有技术进行改进， 在 滚轮销上设置润滑油道、 在挺住体上设置与润滑油道相配合的进油道和出油 道， 配合其他相关技术手段， 可以实现润滑油能够分布到所有的摩擦面， 改 善了泵体部件的接触形态， 使得润滑油分布均匀， 有效提高了润滑效果。  The forced lubrication type roller tappet of the high pressure common rail pump of the invention is improved by the prior art, and the lubricating oil passage is arranged on the roller pin, and the oil inlet passage and the oil outlet which are matched with the lubricating oil passage are arranged on the holding body. Road, combined with other related technical means, can achieve the distribution of lubricating oil to all the friction surfaces, improve the contact shape of the pump parts, make the distribution of lubricating oil uniform, and effectively improve the lubrication effect.

Claims

权 利 要 求 书 Claims
1、 一种高压共轨泵的强制润滑式滚子挺柱， 在泵体 （2) 上并列安装多 个挺柱体 （10)， 在每个挺柱体 （10) 内设置有可以转动的滚轮销 （13)， 所 述滚轮销 （13) 上依次套装滚轮衬套 （12)、 滚轮 （11), 其特征在于： 在挺 柱体 （10) 的两个端面上分别设置缺口 （8)、 圈槽 （3)， 在相邻两个挺柱体1. A forced lubrication type roller tappet of a high pressure common rail pump, wherein a plurality of tappets (10) are arranged side by side on the pump body (2), and each of the tappet bodies (10) is provided with a rotatable a roller pin (13), the roller pin (13) is provided with a roller bushing (12) and a roller (11) in sequence, and is characterized in that: a notch (8) is respectively arranged on both end faces of the tappet body (10) , circle groove (3), adjacent two tappets
(10) 之间的泵体 （2) 上设置进油通道 （9)， 所述进油通道 （9) 连通缺口 (8)， 所述缺口 （8)与圈槽（3)连通， 滚轮销（13)上设置润滑油道（15)， 挺柱体 （10) 上设置有与所述润滑油道 （15) 相连通的进油道 （7)、 出油道 (4)， 所述进油道 （7) 还连通缺口 （8)。 (10) An oil inlet passage (9) is disposed between the pump body (2), the oil inlet passage (9) communicates with the notch (8), and the notch (8) communicates with the ring groove (3), the roller pin (13) a lubricating oil passage (15) is disposed on the tappet body (10), and an oil inlet passage (7) and an oil outlet passage (4) communicating with the lubricating oil passage (15) are disposed, the The oil passage (7) is also connected to the notch (8).
2、如权利要求 1所述的高压共轨泵的强制润滑式滚子挺柱，其特征在于: 所述润滑油道 （15) 包括螺纹型槽 （6)、 及设置于滚轮销 （13) 两端的第一 环形圆槽 （5)、 第二环形圆槽 （16)， 螺紋型槽 （6) 两端分别连通第一环形 圆槽 （5)、 第二环形圆槽 （16)。  2. A forced lubrication roller tappet for a high pressure common rail pump according to claim 1, wherein: said lubricating oil passage (15) comprises a threaded groove (6) and is disposed on the roller pin (13) The first annular circular groove (5) and the second annular circular groove (16) at both ends, the two ends of the threaded groove (6) respectively communicate with the first annular circular groove (5) and the second annular circular groove (16).
3、如权利要求 1所述的高压共轨泵的强制润滑式滚子挺柱，其特征在于: 所述第一环形圆槽 （5)连通出油道（4)， 所述第二环形圆槽（16)连通进油 道 （7)。  A forced lubrication type roller tappet of a high pressure common rail pump according to claim 1, wherein: said first annular circular groove (5) communicates with an oil passage (4), said second circular circle The tank (16) communicates with the oil inlet passage (7).
4、如权利要求 1所述的高压共轨泵的强制润滑式滚子挺柱，其特征在于: 滚轮销 13的两端面 设置为球面， 并且滚轮销 13的总长度 L, 凸轮轴 1凸 轮的宽度 h， 以及泵体 2安装挺柱的腔体直径 j>d， 必须满足 h<L<d。  A forced lubrication type roller tappet of a high pressure common rail pump according to claim 1, wherein: both end faces of the roller pin 13 are provided as a spherical surface, and the total length L of the roller pin 13 is cam cam 1 The width h, and the cavity diameter j>d of the pump body 2 mounting the tappet, must satisfy h<L<d.
PCT/CN2013/001116 2013-01-10 2013-09-22 Forced lubrication roller tappet of high-pressure common rail pump WO2014107824A1 (en)

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