CN2893192Y - Fuel injection pump plunger coupling parts - Google Patents
Fuel injection pump plunger coupling parts Download PDFInfo
- Publication number
- CN2893192Y CN2893192Y CN 200620082264 CN200620082264U CN2893192Y CN 2893192 Y CN2893192 Y CN 2893192Y CN 200620082264 CN200620082264 CN 200620082264 CN 200620082264 U CN200620082264 U CN 200620082264U CN 2893192 Y CN2893192 Y CN 2893192Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- oilhole
- injection pump
- bushing
- crescent
- 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.)
- Expired - Fee Related
Links
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- Fuel-Injection Apparatus (AREA)
Abstract
A new jet pump plunger bushing is comprised of plunger case (1) and plunger (2) and is characterized in that an oil orifice (K) and a positioning crescent groove (C) are opened in the column surface of the large end in the plunger case (1) and the oil orifice (K) and the positioning crescent groove (C) shapes 180. Set against each other, the oil orifice (K) is a radial through hole and the positioning crescent groove (C) is not communicated with the plunger case (1). Compared with the original double-hole plunger case (4), the positioning crescent groove (C) in the utility model does not have oil orifice, so the workmanship is improved, deformed processing is reduced, the assembly quality of the plunger bushing is enhanced, the assembly conformity rate of the jet pump plunger is enhanced by 20%, the fuel oil leakage is effectively reduced, the diameter sealing time is increased by 6-8 times and the service life is prolonged by 3 times.
Description
Technical field
The utility model relates to single cylinder diesel, particularly the Injection Pump plunger coupled parts.
Background technique
At present domestic is the supporting plunger coupled parts of single cylinder diesel Injection Pump, adopts the structure of establishing two oilholes and a crescent on the plunger bushing, and one of them oilhole is arranged in crescent.Though this structural type can satisfy the supporting requirement of general Injection Pump, and obvious deficiency is also arranged: establish two oilholes on the plunger bushing, make the fuel leakage phenomenon many, so that the envelope decline of the footpath of whole plunger coupled parts, supporting working life is shorter.Oilhole and crescent intersection area easily produce machining deformation in addition, make that plunger and plunger bushing block herein in the assembly process, influence plunger coupled parts matching performance and efficiency of assembling.
Summary of the invention
The purpose of this utility model just provides a kind of novel plunger coupled parts, can reduce machining deformation, improve assembly quality, can increase the footpath envelope time again, increases the service life.
Task of the present utility model is finished like this: improve on former plunger coupled parts architecture basics, form a kind of novel plunger and bare of injection pump, form by plunger bushing and plunger, the periphery of the big end of plunger bushing has an oilhole, the opposite has the location crescent, oilhole and location crescent be 180 ° relative and establish, oilhole φ is a radial direction through hole, locatees crescent and does not communicate with the endoporus of plunger bushing.Compare with former pair of oilhole plunger bushing,, improved manufacturability, reduced machining deformation, the plunger coupled parts assembly quality is improved greatly, thereby make Injection Pump assembling up-to-standard rate improve 20% owing to do not open oilhole in the crescent of location of the present utility model.Plunger bushing is only established an oilhole simultaneously, has effectively reduced fuel leakage, makes former pair of oilhole plunger coupled parts of footpath envelope time ratio of the present utility model increase by 6～8 times, has prolonged 3 times working life, has reached scheduled target preferably.
Description of drawings
Fig. 1 is the utility model structure sectional view;
Fig. 2 is a former pair of oilhole plunger coupled parts sectional view.
Among the figure, the 1-plunger bushing, the 2-plunger, the 3-regulating arm, the former plunger bushing of 4-, the K-oilhole, C-locatees crescent, oilhole in the former groove of T-.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.Adopt the 45# steel to make plunger bushing 1, plunger 2, radially have an oilhole K on the periphery of the big end of plunger bushing 1, the opposite has a location crescent C, oilhole K with locate crescent C be 180 ° relative and establish, oilhole K is a through hole, and location crescent C does not communicate with the endoporus of plunger bushing 1.Plunger 2 is identical with plunger 2 structures of former pair of oilhole plunger coupled parts, is fitted to one pair of even part with plunger bushing 1, can be assembled in the Injection Pump supporting with single cylinder diesel.Because plunger bushing 1 of the present utility model is only established an oilhole K, manufacturability is improved, and plunger bushing 1 is better with the matching of plunger 2, assembly quality improves, prolong working life, thereby make Injection Pump improve the final assembly quality until single cylinder diesel, and then prolonged working life.
Claims (1)
1, a kind of novel plunger and bare of injection pump, form by plunger bushing (1), plunger (2), the periphery that it is characterized in that the big end of plunger bushing (1) has an oilhole (K) and location crescent (C), oilhole (K) and location crescent (C) be 180 ° relative and establish, oilhole (K) is a radial direction through hole, and location crescent (C) does not communicate with the endoporus of plunger bushing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082264 CN2893192Y (en) | 2006-03-28 | 2006-03-28 | Fuel injection pump plunger coupling parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082264 CN2893192Y (en) | 2006-03-28 | 2006-03-28 | Fuel injection pump plunger coupling parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893192Y true CN2893192Y (en) | 2007-04-25 |
Family
ID=38061356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620082264 Expired - Fee Related CN2893192Y (en) | 2006-03-28 | 2006-03-28 | Fuel injection pump plunger coupling parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893192Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694194B (en) * | 2009-08-20 | 2012-09-05 | 余姚市舒春机械有限公司 | Plunger couple of oil injection pump of high-power diesel engine |
-
2006
- 2006-03-28 CN CN 200620082264 patent/CN2893192Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694194B (en) * | 2009-08-20 | 2012-09-05 | 余姚市舒春机械有限公司 | Plunger couple of oil injection pump of high-power diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20130328 |