CN104612874B - Automatic fine-adjustment mechanism for fuel capacity control over fuel injection pump - Google Patents
Automatic fine-adjustment mechanism for fuel capacity control over fuel injection pump Download PDFInfo
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- CN104612874B CN104612874B CN201410751598.8A CN201410751598A CN104612874B CN 104612874 B CN104612874 B CN 104612874B CN 201410751598 A CN201410751598 A CN 201410751598A CN 104612874 B CN104612874 B CN 104612874B
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- spring
- hollow bolt
- spring base
- jet needle
- enriching
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Abstract
The invention discloses an automatic fine-adjustment mechanism for fuel capacity control over a fuel injection pump. A fuel capacity control pin (2) is a steel cylinder and is arranged in a hollow bolt (1) in a penetrating mode. The hollow bolt (1) is of a two-segment type step structure. The small-diameter segment of the hollow bolt (1) is sleeved with a fastening nut (7). A correcting spring (3) is arranged between a spring seat (4) and the fuel capacity control pin (2). A starting enriching spring (5) is arranged outside the spring seat (4). The automatic fine-adjustment mechanism can automatically play a role in fine adjustment of the fuel pumping capacity of a diesel when the load of the diesel changes; in addition, automatic adjustment is good in reliability and small in fluctuation, the fuel consumption of the diesel can be lowered, and the service life of the diesel is guaranteed; moreover, the automatic fine-adjustment mechanism has the advantages of being ingenious in design, simple in structure, easy to assemble and reconstruct, low in reconstruction cost, high in universality and the like; the compression amount of the starting enrichment spring can be adjusted by adjusting the position of a screw to adapt to requirements of different situations, and adjustment is easy and convenient.
Description
Technical field
The invention belongs to technical field of engines, specifically, it is used for diesel injection pump oil mass control particularly to a kind of
The governor motion of system.
Background technology
At present, the fuel-flow control of diesel injection pump to be automatically adjusted by special mechanism.Existing fuel-flow control is adjusted
Mechanism is made up of although relatively simple for structure spring, jet needle etc., but stability is poor, the less effective automatically adjusting；With
When, fluctuation when automatically adjusting is larger, can increase the oil consumption of diesel engine, makes diesel engine easily produce carbon distribution, thus causing diesel oil
The use cost of machine increases, and can affect the service life of diesel engine.
Content of the invention
The technical problem to be solved is to provide a kind of injection pump fuel-flow control automatic fine tuning of good stability
Mechanism.
Technical scheme is as follows: a kind of injection pump fuel-flow control automatic fine tuning mechanism, including jet needle
(2), it is critical only that: described jet needle (2) is steel cylinder, and is located in hollow bolt (1), hollow bolt
(1) be two-part ledge structure, on the reduced diameter section of hollow bolt (1) suit clamp nut (7), this clamp nut (7) with
Hollow bolt (1) screw thread coordinates；Hollow bolt (1) is stretched out outward in one end of described jet needle (2), and jet needle (2) should
The end face at end is sphere, and in other end pocketed springs seat (4) of jet needle (2), spring base (4) is tubular structure, and position
In the enlarged diameter section of hollow bolt (1), the inwall at this spring base (4) cylinder bottom is abutted with jet needle (2), spring base (4)
Nozzle be flaring structure, be provided with correcting spring (3) between spring base (4) and jet needle (2), correcting spring (3)
One end is offseted with the inwall at spring base (4) cylinder bottom, the annular boss on the other end of correcting spring (3) and jet needle (2)
(2a) offset, annular boss (2a) is spacing by the step surface in hollow bolt (1)；The setting in the outside of described spring base (4) is opened
Dynamic enriching spring (5), this startup enriching spring (5) is located on spring base (4) outward, starts one end and the spring of enriching spring (5)
The step surface at seat (4) nozzle end offsets, and the other end starting enriching spring (5) is offseted with plug (6), and starts enriching spring
(5) locating dowel (6a) of plug (6) end is inserted in, described plug (6) is screw, this screw screws in the end of hollow bolt (1)
In mouthful.
Using above technical scheme, between plug and spring base, there is certain interval, make jet needle in its axial direction
There is activity surplus, start enriching spring and pretightning force is applied with to spring base and jet needle, make jet needle according to bavin
The load variations of oil machine can carry out fine motion automatically, is controlled with realizing the regulation to injection pump oil mass.Correction bullet in spring base
Spring matches with starting enriching spring, so that jet needle is only moved in its axial direction, will not glance off, so effectively improve
The stability adjusting, reduces fluctuation during regulation, so that diesel engine is operated under the relatively inexpensive oil consumption all the time, decreases bavin
The carbon distribution situation of oil machine, had both reduced use cost, substantially prolongs the service life of diesel engine again.
Hollow bolt is two-part ledge structure, and structure is simple, and processing and fabricating is easy；The reduced diameter section processing of hollow bolt
There is external screw thread, hollow bolt is inserted on the body of diesel engine by reduced diameter section, and is locked by clamp nut, install and both facilitated
Again quick, and the fixing that hollow bolt is connected with body is good, will not occur to loosen or come off.
Start the outside that enriching spring is located on spring base, structure is simpler, compact；The nozzle of spring base is tied for enlarging
Structure, forms step surface in the outer wall of its enlarging, for starting enriching spring retainer, making startup enriching spring well-located；Stifled
Head is screw, easy accessibility, and it is firm to be connected with hollow bolt, and can adjust startup enriching spring as needed by screw
Decrement, adjust operation very convenient；The end of screw is formed with locating dowel, and this locating dowel stretches into startup enriching spring
In, play positioning, the effect guiding to starting enriching spring.
Jet needle is steel cylinder, not only selection convenient it is easy to processing and fabricating, and structural strength and corrosion-resistant
Property is good, will not deform or corrosion.One end that jet needle is matched with speed regulating control panel is sphere, and contact performance is more
Good, be conducive to improving the service life of jet needle.
Preferably, described hollow bolt (1), jet needle (2), correcting spring (3), spring base (4) and startup add
The axial line of dense spring (5) five is point-blank.
It is ensured that structural strength, described spring base (4) is steel stamping parts to processing and fabricating for convenience.
Beneficial effect: the present invention can automatically play fine setting effect to the pump oil amount of diesel engine when diesel load changes,
And the good reliability automatically adjusting, fluctuate little, the oil consumption of diesel engine can be reduced it is ensured that the service life of diesel engine, have and set
The ingenious, structure of meter is simple, be easily assembled, transform easily, improvement cost is low, highly versatile the features such as；By the position of adjusting screw
Put and can adjust the decrement starting enriching spring, to adapt to the needs of different situations, adjust simple, convenient.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples:
As shown in figure 1, hollow bolt 1 is two-part ledge structure, outer spiral shell is machined with the reduced diameter section of hollow bolt 1
Stricture of vagina, the reduced diameter section of hollow bolt 1 is set with clamp nut 7, clamp nut 7 and the cooperation of hollow bolt 1 screw thread.Above-mentioned hollow spiral shell
Bolt 1 is inserted on the body of diesel engine by reduced diameter section, and is locked by clamp nut 7.
As shown in figure 1, wearing jet needle 2 in hollow bolt 1, jet needle 2 is steel cylinder, this oil mass
Control pin 2 and the cooperation of hollow bolt 1 gap, the axial line of the axial line of jet needle 2 and hollow bolt 1 is in straight line
On.Jet needle 2 right-hand member as shown stretches out outside hollow bolt 1, and the right side of jet needle 2 is sphere, this sphere
It is connected with speed regulating control panel (in figure is not drawn into).The left end of jet needle 2 is located in the enlarged diameter section of hollow bolt 1,
The left end pocketed springs seat 4 of jet needle 2, spring base 4 is the cylinder-like structure towards right for the nozzle, and is preferably steel punching
Casting die.The nozzle of spring base 4 is flaring structure, is formed with step surface on the outer wall of spring base 4 nozzle.4 bottoms of spring base
Inwall is abutted with the left side of jet needle 2, is provided with correcting spring 3 between spring base 4 and jet needle 2, corrects bullet
Spring 3 ring set in the outside of jet needle 2 left end, the axial line of the axial line of correcting spring 3 and spring base 4 and fuel-flow control
The axial line of pin 2 is point-blank.The left end of correcting spring 3 is offseted with the inwall at 4 bottoms of spring base, the right side of correcting spring 3
End is offseted with annular boss 2a integral part of on jet needle 2, and annular boss 2a is to the right by the step surface in hollow bolt 1
Spacing.
As shown in figure 1, arrange in the outside of spring base 4 starting enriching spring 5, this startup enriching spring 5 is located at hollow spiral shell
In bolt 1, the axial line of startup enriching spring 5 is with the axial line of jet needle 2 point-blank.Above-mentioned startup enriching spring
5 are located on outside spring base 4, and the right-hand member starting enriching spring 5 is offseted with the step surface at spring base 4 nozzle end, start enriching spring 5
Left end offset with plug 6, and start the left end of enriching spring 5 integral part of for plug 6 end locating dowel 6a be inserted in, fixed
Between position post 6a and spring base 4, there is gap, the size in this gap determines according to actual needs.Plug 6 is preferably screw, this spiral shell
Nail screws in the port of hollow bolt 1, and screw is coordinated with hollow bolt 1 screw thread.
Although being described to the preferred embodiments of the present invention above in association with accompanying drawing, the invention is not restricted to above-mentioned concrete
Embodiment, above-mentioned specific embodiment is only exemplary rather than determinate, and those of ordinary skill in the art exists
Under the enlightenment of the present invention, represent as multiple types without prejudice on the premise of present inventive concept and claim, can be made, such as
The moulding of change hollow bolt, or change the material of component, or change structure and mounting means of plug etc., such change
Change and each fall within protection scope of the present invention.
Claims (3)
1. a kind of injection pump fuel-flow control automatic fine tuning mechanism, including jet needle (2) it is characterised in that: described oil mass control
Pin (2) processed is steel cylinder, and is located in hollow bolt (1), and hollow bolt (1) is two-part ledge structure, hollow
Suit clamp nut (7) on the reduced diameter section of bolt (1), this clamp nut (7) is coordinated with hollow bolt (1) screw thread；Described oil
Amount controls one end of pin (2) to stretch out hollow bolt (1) outward, and the end face at jet needle (2) this end is sphere, in jet needle
(2) other end pocketed springs seat (4), spring base (4) is tubular structure, and is located in the enlarged diameter section of hollow bolt (1), should
The inwall at spring base (4) cylinder bottom is abutted with jet needle (2), and the nozzle of spring base (4) is flaring structure, in spring base (4)
It is provided with correcting spring (3) and jet needle (2) between, the inwall phase at one end of correcting spring (3) and spring base (4) cylinder bottom
Support, the other end of correcting spring (3) is offseted with the annular boss (2a) on jet needle (2), and annular boss (2a) is by hollow
Step surface in bolt (1) is spacing；Arrange in the outside of described spring base (4) and start enriching spring (5), this startup enriching spring
(5) it is located on spring base (4) outward, the one end starting enriching spring (5) is offseted with the step surface at spring base (4) nozzle end, start
The other end of enriching spring (5) is offseted with plug (6), and starts enriching spring (5) by the locating dowel (6a) of plug (6) end
It is inserted in, described plug (6) is screw, this screw screws in the port of hollow bolt (1).
2. injection pump fuel-flow control automatic fine tuning mechanism according to claim 1 it is characterised in that: described hollow bolt
(1), jet needle (2), correcting spring (3), spring base (4) and start enriching spring (5) five axial line straight at one
On line.
3. injection pump fuel-flow control automatic fine tuning mechanism according to claim 1 and 2 it is characterised in that: described spring base
(4) it is steel stamping parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410751598.8A CN104612874B (en) | 2014-12-10 | 2014-12-10 | Automatic fine-adjustment mechanism for fuel capacity control over fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410751598.8A CN104612874B (en) | 2014-12-10 | 2014-12-10 | Automatic fine-adjustment mechanism for fuel capacity control over fuel injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104612874A CN104612874A (en) | 2015-05-13 |
| CN104612874B true CN104612874B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410751598.8A Active CN104612874B (en) | 2014-12-10 | 2014-12-10 | Automatic fine-adjustment mechanism for fuel capacity control over fuel injection pump |
Country Status (1)
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| CN (1) | CN104612874B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524613A (en) * | 1982-12-13 | 1985-06-25 | Diesel Kiki Co., Ltd. | Adjusting device for adjusting initial injection lift of a double injection type fuel injection valve |
| EP0597249A1 (en) * | 1992-11-07 | 1994-05-18 | Robert Bosch Gmbh | Fuel injection arrangement, especially unit injector for an internal combustion engine |
| CN201757004U (en) * | 2010-08-04 | 2011-03-09 | 山东华盛中天动力机械有限公司 | Diesel engine oil quantity control device |
| CN204419363U (en) * | 2014-12-10 | 2015-06-24 | 重庆福欧机械有限公司 | Injection Pump fuel-flow control Automatic Fine Tuning mechanism |
-
2014
- 2014-12-10 CN CN201410751598.8A patent/CN104612874B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524613A (en) * | 1982-12-13 | 1985-06-25 | Diesel Kiki Co., Ltd. | Adjusting device for adjusting initial injection lift of a double injection type fuel injection valve |
| EP0597249A1 (en) * | 1992-11-07 | 1994-05-18 | Robert Bosch Gmbh | Fuel injection arrangement, especially unit injector for an internal combustion engine |
| CN201757004U (en) * | 2010-08-04 | 2011-03-09 | 山东华盛中天动力机械有限公司 | Diesel engine oil quantity control device |
| CN204419363U (en) * | 2014-12-10 | 2015-06-24 | 重庆福欧机械有限公司 | Injection Pump fuel-flow control Automatic Fine Tuning mechanism |
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| Publication number | Publication date |
|---|---|
| CN104612874A (en) | 2015-05-13 |
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Effective date of registration: 20190212 Address after: 402772 168 Wenxing Street, Bishan Road Street, Bishan County, Chongqing Patentee after: Chongqing Longji Machinery Manufacturing Co., Ltd. Address before: 402772 168 Wenxing street, Bishan Road, Chongqing Patentee before: CHONGQING FUOU MACHINERY CO., LTD. |
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