CN202531327U - Fuel injection pump plunger - Google Patents
Fuel injection pump plunger Download PDFInfo
- Publication number
- CN202531327U CN202531327U CN2012201410298U CN201220141029U CN202531327U CN 202531327 U CN202531327 U CN 202531327U CN 2012201410298 U CN2012201410298 U CN 2012201410298U CN 201220141029 U CN201220141029 U CN 201220141029U CN 202531327 U CN202531327 U CN 202531327U
- Authority
- CN
- China
- Prior art keywords
- plunger
- injection pump
- groove
- fuel
- control 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
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a fuel injection pump plunger which comprises a plunger body matched with a plunger, wherein the plunder body is cylindrical, the side wall of the plunger body is provided with a fuel control groove and a secondary groove, the fuel control groove is arranged in an inclined manner, an angle of 50-55 degrees is formed between the fuel control groove and the radial position of a plunder pump body, and the secondary groove is a straight groove. According to the fuel injection pump plunger, the fuel control groove has a 50-55 degrees inclined angle; under the condition that cylinder distance and assembly dimension of a fuel injection pump are not changed, the unit volume fuel supply and effective stroke of the fuel injection pump can be increased only if the inclination degree of the fuel control groove, and thus the fuel supply capacity can be increased after the cooperation of the plunger and the pump body.
Description
Technical field
The utility model relates to the fitting field of motor car engine oil pump, is specifically related to a kind of injection pump plunger.
Background technique
Plunger coupled parts is made up of plunger and plunger bushing, is one of the most accurate even part of oil pump nozzle.Plunger is reciprocating in plunger bushing, realizes the function of Injection Pump oil suction and pump oil.The head of plunger is provided with the control oil groove and starts groove, to satisfy the demand of different motors.After plunger stretched in the plunger bushing, with plunger bushing stroke hyperbaric chamber, the outer environment facies of plunger were low pressure chamber to hyperbaric chamber, and plunger bushing is provided with oil inlet hole, and oil inlet hole is communicated with hyperbaric chamber and low pressure chamber.The control oil groove is generally spiral chute or skewed slot, is used to regulate the every fuel delivery per cycle of oil pump.At present, the control oil groove is that the plunger skewed slot of skewed slot generally becomes 45 with plunger radial, behind this plunger installation and the Injection Pump, can not increase the fuel delivery of Injection Pump biglyyer.If will increase the fuel delivery of the per unit volume of Injection Pump, will change the fitted position of Injection Pump, very inconvenience.
Summary of the invention
The purpose of the utility model is: to the deficiency of existing technology, the utility model provides a kind of fuel feeding injection pump plunger effective, simple in structure.
In order to realize above-mentioned technological scheme, the technological scheme below the utility model has adopted:
A kind of injection pump plunger; Comprise the plunger body that is equipped with plunger bushing; Described plunger body is cylindric, and the sidewall of described plunger body is provided with control oil groove and secondary groove, and described control oil groove is obliquely installed; The control oil groove becomes 50～55 ° of angles with the plunges pump body radial position, described secondary groove is a straight trough.
As preferably, the periphery at the top of described plunger body is provided with short slot, and the side that described short slot relies on plunger body is a straight flange.After adopting above-mentioned preferred version, can make the plunger supply time in advance, and rotating speed is high more, supply time just more in advance.Top end can work respectively when high and low rotating speed, and its advance angle can replace advancing device with the obvious overgauge plunger of scope of change in rotational speed, saves component, has reduced the mounting process step, has reduced cost of production.
As preferably, described short slot is provided with in pairs, and described two short slots are parallel to each other.After adopting above-mentioned preferred version, the injection pump plunger of the utility model is easier, and short slot is controlled the better effects if of oil time in advance.
As preferably, the control oil groove on the described control plunger body sidewall is provided with in pairs.After adopting above-mentioned preferred version, structure is more compact, controls oily better effects if.
As preferably, described plunger body is provided with lip portions away from an end of short slot, and described lip portions is equipped with corresponding plunger bushing.After adopting above-mentioned preferred version, the fiting effect of plunger body and plunger bushing is better.
The control oil groove of the injection pump plunger of the utility model is 50～55 °; Under the situation of pumping element spacing and fitted position inconvenience; Only increase the fuel delivery and the effective travel of Injection Pump per unit volume, the supply capability after having improved plunger and the pump housing cooperating through the gradient that changes the control oil groove.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the structural representation that the utility model embodiment injection pump plunger cooperates with plunger bushing;
Fig. 3 is the plan view of the utility model embodiment plunger body top end.
Embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, the specific embodiment of the utility model is a kind of injection pump plunger, comprises the plunger body 1 that is equipped with plunger bushing 2; Plunger body 1 is cylindric, and the sidewall of plunger body 1 is provided with control oil groove 11 and secondary groove 12, and the sidewall of plunger body 1 is provided with two control oil grooves 11; On the two control oil grooves 11 a secondary groove 12 is set respectively; Control oil groove 11 is obliquely installed, and the control oil groove becomes 50 ° of angles with the plunges pump body radial position, and the control oil groove also can become 55 ° of angles with the plunges pump body radial position; Secondary groove 12 is a straight trough; Secondary groove 12 is communicated with control oil groove 11, and secondary groove 12 extends to the top end 13 of plunger body 1 away from an end of controlling oil groove 11, and is provided with opening 121 in plunger body 1 top end 13.The top end 13 of plunger body 1 is the small end face of plunger body 1.The periphery of the top end 13 of plunger body 1 is provided with short slot 14, and the side that short slot 14 relies on plunger body 1 is a straight flange.Short slot 14 is provided with in pairs, and two short slots 14 are parallel to each other.
The working principle of the working principle of the injection pump plunger of the utility model and the injection pump plunger of existing technology is basic identical; Difference is: the injection pump plunger of the utility model has increased the become angle of plunger control skewed slot with plunger radial; Under the fitted position that does not change Injection Pump; The fuel delivery and the effective travel of Injection Pump per unit volume have been increased, the supply capability after having improved plunger and the pump housing cooperating.
Claims (5)
1. Injection Pump crack plunger; Comprise the plunger body that is equipped with plunger bushing; Described plunger body is cylindric, and the sidewall of described plunger body is provided with control oil groove and secondary groove, and it is characterized in that: described control oil groove is obliquely installed; The control oil groove becomes 50～55 ° of angles with the plunges pump body radial position, described secondary groove is a straight trough.
2. injection pump plunger according to claim 1 is characterized in that: the periphery at the top of described plunger body is provided with short slot, and the side that described short slot relies on plunger body is a straight flange.
3. injection pump plunger according to claim 2 is characterized in that: described short slot is provided with in pairs, and described two short slots are parallel to each other.
4. injection pump plunger according to claim 1 is characterized in that: the control oil groove on the described control plunger body sidewall is provided with in pairs.
5. injection pump plunger according to claim 1 is characterized in that: described plunger body is provided with lip portions away from an end of short slot, and described lip portions is equipped with corresponding plunger bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201410298U CN202531327U (en) | 2012-04-05 | 2012-04-05 | Fuel injection pump plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201410298U CN202531327U (en) | 2012-04-05 | 2012-04-05 | Fuel injection pump plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531327U true CN202531327U (en) | 2012-11-14 |
Family
ID=47132516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201410298U Expired - Fee Related CN202531327U (en) | 2012-04-05 | 2012-04-05 | Fuel injection pump plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061099A (en) * | 2014-06-25 | 2014-09-24 | 洪宝童 | Energy-saving engine fuel injection pump plunger |
-
2012
- 2012-04-05 CN CN2012201410298U patent/CN202531327U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061099A (en) * | 2014-06-25 | 2014-09-24 | 洪宝童 | Energy-saving engine fuel injection pump plunger |
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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: 20121114 Termination date: 20140405 |