CN111749826A - Roller tappet for high-pressure fuel pump - Google Patents
Roller tappet for high-pressure fuel pump Download PDFInfo
- Publication number
- CN111749826A CN111749826A CN201910232684.0A CN201910232684A CN111749826A CN 111749826 A CN111749826 A CN 111749826A CN 201910232684 A CN201910232684 A CN 201910232684A CN 111749826 A CN111749826 A CN 111749826A
- Authority
- CN
- China
- Prior art keywords
- roller
- roller lifter
- lifter body
- bearing bolt
- fuel pump
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
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- 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
-
- 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
- F02M59/48—Assembling; Disassembling; Replacing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
A roller tappet (10) for a high-pressure fuel pump is described. The roller lifter (10) includes a roller lifter body (12) and a roller (14) located within the roller lifter body (12). The bearing bolts (16) are located within the rollers (14). A retainer ring (18) surrounds the bearing bolt (16) and the roller lifter body (12) for securing the bearing bolt (16) to the roller lifter body (12). The retainer ring (18) is oriented along a longitudinal axis of the bearing bolt (16) and perpendicular to a longitudinal axis of the roller lifter body (12).
Description
Technical Field
The present invention relates to roller tappets and, more particularly, to a retainer ring (retainer ring) for securing a bearing bolt to a roller tappet body of a roller tappet.
Background
US 2006/288974 a describes a connection of a bearing bolt in a cylindrical housing of a roller tappet, which is actuated in the direction of a longitudinal axis (Z), in particular for tappet rod valve drives of internal combustion engines. The bearing bolt is supported in a bore hole of the housing which extends in a transverse plane (XY) perpendicular to the longitudinal axis (Z) into the roller tappet and is connected to the housing by material deformation with a positive fit and/or a non-positive fit. The material deformation is provided as one or more segments, wherein at least one segment completely surrounds the radial load region of the bearing bolt and the section of the bearing bolt extending around the transverse plane (XY) is free of material deformation.
Drawings
FIG. 1 illustrates a schematic diagram of a roller tappet for a high pressure fuel pump; and
fig. 2 illustrates a side view of the roller tappet for the high-pressure fuel pump.
Detailed Description
Fig. 1 illustrates a roller tappet 10 for a high-pressure fuel pump. Roller lifter 10 includes a roller lifter body 12 and a roller 14 located within roller lifter body 12. Bearing bolts 16 are located within the rollers 14. A retainer ring 18 surrounds bearing bolt 16 and roller lifter body 12 for securing bearing bolt 16 to roller lifter body 12. Retainer ring 18 is oriented along the longitudinal axis of bearing bolt 16 and perpendicular to the longitudinal axis of roller lifter body 12.
Fig. 2 illustrates a side view of the roller tappet 10 for the high-pressure fuel pump. Roller lifter 10 also includes a groove 21 defined on roller lifter body 12 such that groove 21 surrounds the entire roller lifter body 12 in a transverse plane perpendicular to the longitudinal axis of roller lifter body 12.
In the exemplary embodiment, retainer ring 18 is inserted into a groove 21 defined on roller lifter body 12 such that retainer ring 18 extends circumferentially around groove 21 of roller lifter body 12 to form a tight fit within groove 21 of roller lifter body 12. Additionally, a retaining ring 18 extends around bearing bolt 16 to help secure bearing bolt 16 to roller lifter body 12. In the embodiment shown in fig. 1, retainer ring 18 is oriented along a longitudinal axis of bearing bolt 16 and perpendicular to a longitudinal axis of roller lifter body 12.
Retaining ring 18 exerts a restraining force on bearing bolt 16 to help secure bearing bolt 16 to roller lifter body 12. The applied restraining force prevents bearing bolt 16 from disengaging from roller lifter body 12. When it is desired to disengage bearing bolt 16 from roller lifter body 12, the ends of retainer ring 18 are pried apart and retainer ring 18 is removed from groove 21. Once retainer ring 18 is removed from roller lifter body 12, bearing bolt 16 may be disengaged from roller lifter body 12.
It must be understood that the above explained embodiments are only illustrative and do not limit the scope of the present disclosure. Many modifications of the embodiments are contemplated and form part of the present invention with respect to leverage and dimensions of the various components. The scope of the invention is limited only by the scope of the claims.
Claims (2)
1. A roller lifter (10) for a high pressure fuel pump, the roller lifter (10) comprising:
a roller tappet body (12);
a roller (14) located within the roller lifter body (12);
a bearing bolt (16) located within the roller (14); it is characterized in that the preparation method is characterized in that,
a retainer ring (18) encircling the bearing bolt (16) and the roller lifter body (12) for securing the bearing bolt (16) to the roller lifter body (12), the retainer ring (18) being oriented along a longitudinal axis of the bearing bolt (16) and perpendicular to a longitudinal axis of the roller lifter body (12).
2. The roller lifter (10) for a high-pressure fuel pump according to claim 1, further comprising a groove (21) defined in the roller lifter body (12), wherein the retainer ring (18) is inserted onto the groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232684.0A CN111749826A (en) | 2019-03-26 | 2019-03-26 | Roller tappet for high-pressure fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232684.0A CN111749826A (en) | 2019-03-26 | 2019-03-26 | Roller tappet for high-pressure fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111749826A true CN111749826A (en) | 2020-10-09 |
Family
ID=72671308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910232684.0A Pending CN111749826A (en) | 2019-03-26 | 2019-03-26 | Roller tappet for high-pressure fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111749826A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385124A (en) * | 1994-05-31 | 1995-01-31 | Eaton Corporation | Roller follower axle |
| US6405698B1 (en) * | 1998-12-12 | 2002-06-18 | Mahle Ventiltrieb Gmbh | Roller tappet |
| CN103573607A (en) * | 2012-08-06 | 2014-02-12 | 现代自动车株式会社 | Roller structure for high pressure pump |
| CN104514657A (en) * | 2013-09-27 | 2015-04-15 | Skf公司 | Cam follower, injection pump and valve actuator comprising such a cam follower and manufacturing method |
| CN204804893U (en) * | 2014-01-12 | 2015-11-25 | 伊顿公司 | A engine roller tappet for among explosive motor's valve timing mechanism |
| WO2016078881A1 (en) * | 2014-11-21 | 2016-05-26 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
| DE102017103483B3 (en) * | 2017-02-21 | 2018-01-04 | Schaeffler Technologies AG & Co. KG | roller plunger |
-
2019
- 2019-03-26 CN CN201910232684.0A patent/CN111749826A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385124A (en) * | 1994-05-31 | 1995-01-31 | Eaton Corporation | Roller follower axle |
| US6405698B1 (en) * | 1998-12-12 | 2002-06-18 | Mahle Ventiltrieb Gmbh | Roller tappet |
| CN103573607A (en) * | 2012-08-06 | 2014-02-12 | 现代自动车株式会社 | Roller structure for high pressure pump |
| CN104514657A (en) * | 2013-09-27 | 2015-04-15 | Skf公司 | Cam follower, injection pump and valve actuator comprising such a cam follower and manufacturing method |
| CN204804893U (en) * | 2014-01-12 | 2015-11-25 | 伊顿公司 | A engine roller tappet for among explosive motor's valve timing mechanism |
| WO2016078881A1 (en) * | 2014-11-21 | 2016-05-26 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
| DE102017103483B3 (en) * | 2017-02-21 | 2018-01-04 | Schaeffler Technologies AG & Co. KG | roller plunger |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |