CN2846769Y - Oil jet pump oil saving corrector - Google Patents
Oil jet pump oil saving corrector Download PDFInfo
- Publication number
- CN2846769Y CN2846769Y CN 200520114533 CN200520114533U CN2846769Y CN 2846769 Y CN2846769 Y CN 2846769Y CN 200520114533 CN200520114533 CN 200520114533 CN 200520114533 U CN200520114533 U CN 200520114533U CN 2846769 Y CN2846769 Y CN 2846769Y
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- CN
- China
- Prior art keywords
- corrector
- fuel
- economizing
- oil
- delivery valve
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- 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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Abstract
The utility model belongs to an oil saving corrector for an oil jet pump. The oil saving corrector is a drum body with the upper end edge bending inwards; the upper end surface of the oil saving corrector is a clamping plane, and the middle of the upper end surface of the oil saving corrector is provided with a trepan boring for a peripheral body at the upper end of a valve base to penetrate; the clamping plane of the oil saving corrector is positioned at the lower end of a delivery valve holder. The lower end of the oil saving corrector is positioned on an L-shaped card edge which is recessed inward from the upper end of a plunger sleeve corresponding to the circumference of the lower end; the oil saving corrector under the clamping plane is provided with a sealing liner group. The utility model which is matched with the traditional sealing structure can keep the exact fit of coupling members permanently. The utility model has the advantage of prolonging the service life of the oil jet pump.
Description
Technical field
The utility model belongs to a kind of Injection Pump fuel-economizing corrector.
Background technique
As depicted in figs. 1 and 2, the function of Injection Pump is according to the operating conditions of diesel engine and cylinder working order, with certain rules in good time, carry high pressure fuel to oil sprayer quantitatively.Traditional Injection Pump is made up of parts such as pump oil mechanism, fuel delivery controlling mechanism, driving mechanism and fuel injection pump housings.Pump oil mechanism comprises plunger bushing 7, plunger 10, piston spring 14, parts such as piston spring seat 13 and 15, oil outlet valve spring 4 and delivery valve holder 3 up and down.Plunger bushing and plunger constitute the most accurate even part in the Injection Pump, just because of the precision-fit of plunger coupled parts and the high-speed motion of plunger, just are achieved the supercharging to fuel oil, require its matching gap in 0.0015～0.0025mm scope, excesssive gap, leakage of oil easily causes oil pressure to descend; The gap is too small, and mating plate is lubricated unfavorable, and stuck easily, and plunger coupled parts in use can not exchange.Plunger bushing is installed in the seat hole of fuel injection pump housing 22, and the low pressure oil pocket 8 in the oilhole on the plunger bushing and the Injection Pump communicates, and rotates for preventing plunger bushing, fixes with positioning screwn 9.Make plunger be pressed on fuel feeding on the tappet 17 all the time regularly on the adjusting screw 16 by the pretightening force of piston spring, make simultaneously by roller pin 18 and the fixing roller 19 of tappet, all the time with fuel injection camshaft 20 on cam 21 keep in touch.Outlet valve 5 and delivery valve seat 6 are even parts of another precision in the Injection Pump, weigh up valve matching parts, delivery valve matching parts is positioned at the plunger coupled parts top, the lower end surface of delivery valve seat contacts with the upper-end surface sealing of plunger bushing by the liner group, keeps driving fit by tightening the surface of contact that delivery valve holder makes both by the liner group.Being enclosed within the oil outlet valve spring that subtracts on the container 23 simultaneously is pressed on outlet valve on the delivery valve seat.The bakelite diaphragm seal 26 that the liner group is established by two pads 25 and their therebetween constitutes.
The fuel delivery controlling mechanism comprises that gear ring 1, gear ring clamping screw 11, oily regulating sleeve 12, fuel feeding regulate parts such as ratch 2, guide surface 27, for conventional construction and the present invention put irrelevant, so be not repeated.
Obviously, delivery valve seat and plunger bushing are shaken the influence of part outlet valve and plunger respectively, be in for a long time under the vibrations operating mode, the precision-fit of even part can not keep lastingly, and especially jolt-squeezing of delivery valve seat and plunger bushing very easily caused the damage of liner group, make both surface of contact can not keep driving fit, cause plunger to hit partially, block oil spray, can not the pump oil spout, cause the function forfeiture of Injection Pump, the working life of Injection Pump is short.
Summary of the invention
The purpose of this utility model is a kind of Injection Pump fuel-economizing corrector of design, makes it cooperate traditional driving fit structure that the precision-fit of even part is kept lastingly, and the advantage in the working life that prolongs Injection Pump is arranged.For this reason, it is that garden staving is into inwardly bent on the limit, upper end that the utility model adopts the fuel-economizing corrector, the upper-end surface of fuel-economizing corrector is a clamping plane, the middle part, upper-end surface of fuel-economizing corrector is provided with the trepanning that penetrates for valve seat upper end periphery body, the clamping plane of fuel-economizing corrector is positioned at the delivery valve holder lower end, the lower end of fuel-economizing corrector is positioned on the inside recessed L shaped edge in plunger bushing upper end that end periphery is corresponding down with it, and the fuel-economizing corrector bag under the clamping plane is established the liner group.The said structure design has reached the purpose of this utility model.
The utility model has the advantages that having traditional driving fit structure of cooperation can make the precision-fit of even part keep lastingly, prolong the working life of Injection Pump significantly, can make the Injection Pump life-span prolong 10 times according to test the utility model.Owing to can make the precision-fit of even part keep lasting, make the Injection Pump operating mode be in the Injection Pump fuel-economizing about 60% of the more traditional non-precision-fit of the best, also have simple in structure, repacking is propped up and is taken conveniently flexibly, adapts to wide, can accelerate repair progress, reduce mistake and repair misjudgement, it is promptly good to have repaiied, and reduces repair material input and the good advantage of using effect.
Description of drawings
Fig. 1 is traditional Injection Pump structural representation
Fig. 2 is traditional Injection Pump partial structurtes schematic representation
Fig. 3 is a user mode structural representation of the present utility model
Fig. 4 is a structural representation of the present utility model
Specific embodiments
Extremely shown in Figure 2 as Fig. 1, for traditional Injection Pump structure was described in background technique, so be not repeated.
To shown in Figure 4, a kind of Injection Pump fuel-economizing corrector is made up of plunger 10, delivery valve holder 3, delivery valve seat 6, liner group 24 and plunger bushing 7 as Fig. 3.Fuel-economizing corrector 28 is that garden staving is into inwardly bent on the limit, upper end, the upper-end surface of fuel-economizing corrector is a clamping plane 281, the middle part, upper-end surface of fuel-economizing corrector is provided with the trepanning 282 that penetrates for valve seat upper end periphery body 62, the clamping plane of fuel-economizing corrector is positioned at the delivery valve holder lower end, and the lower end of fuel-economizing corrector is positioned on the inside recessed L shaped edge 30 in plunger bushing upper end that end periphery is corresponding down with it.Fuel-economizing corrector bag under the clamping plane is established the liner group.The bakelite diaphragm seal 26 that the liner group is established by two pads 25 and their therebetween constitutes.The fuel-economizing corrector becomes with steel or copper.
The internal diameter of described fuel-economizing corrector is identical with the external diameter of the L shaped edge of delivery valve seat lower outer diameter and delivery valve seat top.Described plunger bushing upper end inwardly recessed L shaped edge card is established, is located in the lower end of fuel-economizing corrector.
During use, tightening the delivery valve holder front and back, the lower end surface of fuel-economizing corrector and L shaped edge bottom surface compress gap 29.The lower end jacket delivery valve seat and the liner group of fuel-economizing corrector are structure as a whole, are beneficial to conduction and the precision-fit and the driving fit of closing force.And the fuel-economizing corrector on average conducts delivery valve holder pressure, and balanced pressure to the liner group makes the liner group be in the optimal seal state, and permanent the maintenance.
In a word, the utlity model has the traditional driving fit structure of cooperation the precision-fit of even part is kept lastingly, prolong the working life of Injection Pump significantly, can promote the use of.
Claims (3)
1, a kind of Injection Pump fuel-economizing corrector, by plunger, delivery valve holder, delivery valve seat, liner group and plunger bushing are formed, it is characterized in that: the fuel-economizing corrector is that garden staving is into inwardly bent on the limit, upper end, the upper-end surface of fuel-economizing corrector is a clamping plane, the middle part, upper-end surface of fuel-economizing corrector is provided with the trepanning that penetrates for valve seat upper end periphery body, the clamping plane of fuel-economizing corrector is positioned at the delivery valve holder lower end, the lower end of fuel-economizing corrector is positioned on the inside recessed L shaped edge in plunger bushing upper end that end periphery is corresponding down with it, and the fuel-economizing corrector bag under the clamping plane is established the liner group.
2, by the described Injection Pump fuel-economizing of claim 1 corrector, it is characterized in that: the internal diameter of described fuel-economizing corrector is identical with the external diameter of the L shaped edge of delivery valve seat lower outer diameter and delivery valve seat top.
3, by the described Injection Pump fuel-economizing of claim 1 corrector, it is characterized in that: described plunger bushing upper end inwardly recessed L shaped edge card is established, is located in the lower end of fuel-economizing corrector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114533 CN2846769Y (en) | 2005-09-30 | 2005-09-30 | Oil jet pump oil saving corrector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114533 CN2846769Y (en) | 2005-09-30 | 2005-09-30 | Oil jet pump oil saving corrector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846769Y true CN2846769Y (en) | 2006-12-13 |
Family
ID=37512192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520114533 Expired - Fee Related CN2846769Y (en) | 2005-09-30 | 2005-09-30 | Oil jet pump oil saving corrector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846769Y (en) |
-
2005
- 2005-09-30 CN CN 200520114533 patent/CN2846769Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |