CN2547890Y - High-pressure fuel injection pump plunger - Google Patents
High-pressure fuel injection pump plunger Download PDFInfo
- Publication number
- CN2547890Y CN2547890Y CN 02267642 CN02267642U CN2547890Y CN 2547890 Y CN2547890 Y CN 2547890Y CN 02267642 CN02267642 CN 02267642 CN 02267642 U CN02267642 U CN 02267642U CN 2547890 Y CN2547890 Y CN 2547890Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- injection pump
- groove
- return
- oil
- 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
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
A high pressure fuel injection pump plunger of the utility model is a fitting for a diesel injection pump and mainly comprises a plunger piston body, the outer side of the upper part of the plunger piston body is provided with a return chute and a flume communicated with the return chute. The utility model is characterized in that an idle groove is also arranged on the edge of the top part of the plunger piston body, and the idle groove is communicated with the return chute. The superface of the plunger piston body is of a step shape, which shortens effective delivery stroke at the idle position of the plunger piston with early return time and much return volume on the condition that feeding time and feeding volume are consistent. The oil mass requirements of full load and start-up position can also be met. The utility model has the advantages of simple structure, easily realized technology and strong commonality.
Description
Technical field
The utility model relates to diesel engine high-pressure Injection Pump parts, is a kind of novel Injection Pump plunger coupled parts specifically.
Background technique
Plunger coupled parts is one pair of precision pair in the diesel engine high-pressure Injection Pump, is made up of plunger and plunger bushing, and plunger is the high speed to-and-fro motion in plunger bushing, finishes oil suction, the pump functional oil of Injection Pump.Existing plunger all is made up of the cylindrical pillars cock body, the skewed slot that plunger body is provided with oil-return groove and communicates with it, the end face of plunger body is a plane, realizes the different demands of diesel engine to oil mass by changing skewed slot with the relative position between the plunger bushing spill port during work.But the plunger of this kind structure can not solve the overproof problem of idling effectively, causes idling height, fuel consumption big.As reducing idling, then can influence the oil mass of diesel engine full load and starting position by the methods such as parameter of adjusting the diesel engine outlet valve.
Technology contents
The purpose of this utility model is to provide a kind of novel high-pressure Injection Pump plunger that can effectively reduce the diesel engine idling.
The utility model is achieved in that
The high-pressure injection pump plunger mainly is made up of plunger body, and the skewed slot that the upper outside of plunger body is provided with oil-return groove and communicates with it is characterized in that: also have an idling groove at the edge at plunger body top, this idling groove communicates with above-mentioned oil-return groove.
After the utility model adopts said structure, owing to set up an idling groove that communicates with oil-return groove at the top of plunger body, make the end face of plunger body form step-like, thereby reduced the fuel feeding effective travel of plunger idle position, under the situation of oil-feed time and oil inlet quantity unanimity, the oil return time early, recirculating oil quantity is many.Can reduce the fuel delivery and the rotating speed of idle position, reach the purpose that reduces idling.Simultaneously can satisfy the oil mass requirement of full load and starting position again, have that simple in structure, technology is easy to realize, the effect of highly versatile.Idle position can be adjusted as required flexibly, in the parameter that does not change the diesel engine outlet valve, do not change plunger diameter and not changing under the situation at plunger skewed slot inclination angle, can adjust idling, and total has no effect to other operating mode of diesel engine.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Fig. 1 is a kind of structural representation of the present utility model, and Fig. 2 is the plan structure schematic representation of Fig. 1.
Embodiment
In the accompanying drawing, 1 is that plunger body, 2 is that oil-return groove, 3 is that skewed slot, 4 is the idling groove.
As shown in drawings, the utility model mainly is made up of the plunger body 1 of former high pressure fuel injector pump plunger, and plunger body 1 is cylindrical, at an upper portion thereof the outer side surface skewed slot 3 that is provided with oil-return groove 2 and communicates with it.When Injection Pump and diesel engine coupling idling was higher, the idling groove 4 that communicates with above-mentioned oil-return groove 2 was left at the edge at plunger body 1 top again, and this idling groove 4 is a stepped slot that grinds at the top of plunger body 1, makes the end face of plunger body 1 form step-like.When plunger body 1 reaches tip position and moves downward in plunger bushing like this, because the existence of idling groove 4, effectively reduce the fuel feeding effective travel of idle position, thereby reduced with plunger bushing on spill port be communicated with the time, under the situation of oil-feed time and oil inlet quantity unanimity, the connection time early, recirculating oil quantity is many, thereby reduced the fuel delivery of idle position, reaches the purpose that reduces idling.
Above-mentioned idling groove 4 is perpendicular to oil-return groove 2, and oil-return groove 2 is positioned at the neutral position of idling groove 4.The size of idling groove 4 and size can be adjusted according to actual needs flexibly.
Claims (3)
1, high-pressure injection pump plunger, mainly form by plunger body (1), the skewed slot (3) that the upper outside of plunger body (1) is provided with oil-return groove (2) and communicates with it, it is characterized in that: the edge at plunger body (1) top also has an idling groove (4), and this idling groove (4) communicates with above-mentioned oil-return groove (2).
2, high-pressure injection pump plunger according to claim 1 is characterized in that: above-mentioned idling groove (4) is a stepped slot.
3, high-pressure injection pump plunger according to claim 1 and 2 is characterized in that: above-mentioned idling groove (4) is perpendicular to oil-return groove (2), and oil-return groove (2) is positioned at the neutral position of idling groove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267642 CN2547890Y (en) | 2002-06-17 | 2002-06-17 | High-pressure fuel injection pump plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267642 CN2547890Y (en) | 2002-06-17 | 2002-06-17 | High-pressure fuel injection pump plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2547890Y true CN2547890Y (en) | 2003-04-30 |
Family
ID=33733201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267642 Expired - Fee Related CN2547890Y (en) | 2002-06-17 | 2002-06-17 | High-pressure fuel injection pump plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2547890Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010127613A1 (en) * | 2009-05-04 | 2010-11-11 | Hong Xuanmin | In-line fuel pump plunger for diesel engine |
| CN103835852A (en) * | 2012-11-24 | 2014-06-04 | 韩行夫 | High-pressure oil pump plunger |
| CN108223205A (en) * | 2016-10-15 | 2018-06-29 | 宋德伍 | High-pressure oil pump and the single cylinder diesel suitable for EGR exhaust recycling |
-
2002
- 2002-06-17 CN CN 02267642 patent/CN2547890Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010127613A1 (en) * | 2009-05-04 | 2010-11-11 | Hong Xuanmin | In-line fuel pump plunger for diesel engine |
| CN103835852A (en) * | 2012-11-24 | 2014-06-04 | 韩行夫 | High-pressure oil pump plunger |
| CN103835852B (en) * | 2012-11-24 | 2017-02-08 | 韩行夫 | High-pressure oil pump plunger |
| CN108223205A (en) * | 2016-10-15 | 2018-06-29 | 宋德伍 | High-pressure oil pump and the single cylinder diesel suitable for EGR exhaust recycling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110748446A (en) | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump | |
| CN2547890Y (en) | High-pressure fuel injection pump plunger | |
| CN107489572A (en) | Integrated high pressure fuel feeding oil pump | |
| CN100392236C (en) | Generation system for adjusting fuel injection pressure in hyperpressure for diesel engine | |
| CN104061099A (en) | Energy-saving engine fuel injection pump plunger | |
| CN201972825U (en) | Diesel engine oil spraying pump assembly | |
| CN207945032U (en) | A kind of injection pump | |
| CN2720158Y (en) | Constant power and constant pressure variable pump | |
| CN1664350A (en) | Electric control common-rail valve-nozzle injection system | |
| CN201818411U (en) | Fuel injection pump | |
| CN102392771A (en) | High-pressure common-rail diesel engine rail-pressure reinforcement principle and device | |
| CN203962260U (en) | Energy-saving injection pump of engine plunger | |
| CN201141335Y (en) | Two-stage lift range oil ejector for high power diesel engine | |
| CN2861534Y (en) | Plunger pump for jetting machine | |
| CN208106620U (en) | A kind of adjustable capacity injection pump | |
| CN100354519C (en) | Double-plunger oil supplying pump | |
| CN2723713Y (en) | Single pump type synthetic in-line pump | |
| CN2911225Y (en) | Flexible regulatable superhigh pressure fuel jetting unit | |
| CN2583378Y (en) | Fuel oil injector for diesel engine | |
| CN204610043U (en) | Energy-saving multicylinder engine | |
| CN210948964U (en) | Common rail high-pressure oil inlet and outlet valve assembly and common rail high-pressure oil supply pump | |
| CN2707991Y (en) | Intensified injection pump for diesel engine | |
| CN101451455A (en) | Electronic control cylinder fuel-injection pump system | |
| CN2775329Y (en) | Electric control combined pump assembly | |
| CN214403834U (en) | High-pressure common-rail oil injection pump |
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: 20030430 Termination date: 20110617 |