CN103912387B - Mechanical fuel injection pump fuel amount adjusting device - Google Patents
Mechanical fuel injection pump fuel amount adjusting device Download PDFInfo
- Publication number
- CN103912387B CN103912387B CN201310006879.6A CN201310006879A CN103912387B CN 103912387 B CN103912387 B CN 103912387B CN 201310006879 A CN201310006879 A CN 201310006879A CN 103912387 B CN103912387 B CN 103912387B
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- injection pump
- camshaft
- oil
- limited block
- cover plate
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- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a mechanical fuel injection pump fuel amount adjusting device. The mechanical fuel injection pump fuel amount adjusting device comprises a cover plate, a cam shaft, a supporting sleeve, a fuel amount limit block and a pressure spring; the cover plate and the supporting sleeve support the cam shaft to rotate at two ends; the fuel amount limit block which is arranged on the cam shaft in a penetration mode can arranged on the supporting sleeve in a slidable mode; the pressure spring is arranged between the cover plate and the fuel amount limit block in a pressure mode. According to the mechanical fuel injection pump fuel amount adjusting device, the structure is simple and reasonable, axial rotation of the cam shaft is converted into horizontal positional movement through cam circular arc radius central position shift due to rotation of the cam shaft which is arranged inside the fuel amount limit block in the penetration mode, accordingly the fuel injection pump fuel amount can be adjusted according to actual operation working conditions, applicable working conditions of an engine which is provided the mechanical fuel injection pump are wide, and the costs are low.
Description
Technical field
The present invention relates to engine art, particularly to a kind of hydraulic injection pump oil quantity regulating device.
Background technology
Electromotor mechanical type injection pump has the advantages that easy to maintenance, use cost is low.This injection pump is widely used in
On the supporting electromotor of automobile, non-road machinery.
But this mechanical type injection pump controls fuel supply system not as with electronic governor or by ECU ECU
System, specified distributive value is adjustable；, through bench test before electromotor dispatches from the factory, the position of oil mass limited block is solid for mechanical type injection pump
Fix, its nominal oil level is non-adjustable, for the user that working condition is complicated, the performance of electromotor cannot become according to manipulating object
More, so there is problems that：If pressing severe duty adjustment injection pump of engine fuel delivery, when electromotor is in light duty
Under, the power too excessive fuel consumption greatly of electromotor output；Conversely, when by light duty adjustment injection pump of engine fuel delivery, heavily loaded work
During condition, electromotor is powerless.As loader, its manipulating object is probably the coal yard of shovel dress bulk material, or the stone that shovel dress is difficult
?.For many years, in order to adapt to different manipulating objects, each loader supplier develops special dress for this segmenting market
Carrier aircraft, but most user, after it buys loader, are not to be only limited in certain occasion operation, electromotor output performance
Can not be changed according to manipulating object, the highly desirable engine output of loader manufacturer is adjustable.
Solve the problems, such as above, can by using electrical control oil spray pump, or using having electronic speed regulator traditional machine
Tool formula injection pump, but both of which brings the problems such as use cost is high, maintenance technique is complicated, seriously limits practical application；?
Can be in order to ensure dynamic property, vehicle manufacturers require electromotor producer to dispatch from the factory performance by severe duty debugging electromotor, but this
Sample is high using electromotor specific fuel consumption under underloading, the operating mode of middle load, uneconomical.
Content of the invention
The present invention is to overcome defect in above-mentioned prior art, there is provided a kind of simple and reasonable, nominal oil level can
Tune, applicable working condition are extensive, the hydraulic injection pump oil quantity regulating device of low cost.
For reaching above-mentioned purpose, according to the invention provides a kind of hydraulic injection pump oil quantity regulating device, including：Cover plate,
Camshaft, support set, oil mass limited block and holddown spring, cover plate and support set rotate from two ends supporting cam wheel axle, and oil mass is spacing
Block is located on camshaft, and is slidably disposed on support set, and holddown spring is pressed between cover plate and oil mass limited block.
In technique scheme, cover plate offers coaxial oil sealing counterbore and camshaft perforation, oil sealing from top to bottom successively
Oil sealing is installed in counterbore.
In technique scheme, camshaft includes：Axostylus axostyle, and be inserted into the handle at axostylus axostyle top and be located in the middle part of axostylus axostyle
Cam.
In technique scheme, cam has two circular arcs of round and smooth connection, and large circular arc radius are the twice of roundlet arc radius.
In technique scheme, support set top surface offers camshaft support blind hole and is located at camshaft support blind hole both sides
Oil mass limited block chute, the bottom surface of oil mass limited block offer be adapted to oil mass limited block chute slide guide rail.
Compared with prior art, the present invention has the advantages that：This hydraulic injection pump oil quantity regulating device structure letter
Single reasonable, it is located in the camshaft in oil mass limited block by rotation, using camshaft overhead cam arc radius center location difference
The lateral attitude that the axial-rotation of camshaft is converted into oil mass limited block is moved, and then according to actual job Operating condition adjustment oil spout
Pump oil amount so that the electromotor applicable working condition with this mechanical spray oil pump extensively, low cost.
Brief description
Fig. 1 is the structural representation of the hydraulic injection pump oil quantity regulating device of the present invention；
Fig. 2 is the A-A direction cross section structure diagram of Fig. 1；
Fig. 3 is the B-B direction cross section structure diagram of Fig. 1；
Description of reference numerals：
1- cover plate, 11- oil sealing, 2- camshaft, 21- axostylus axostyle, 22- handle, 23- cam, 3- support set, 31- camshaft props up
Support blind hole, 32- oil mass limited block chute, 4- oil mass limited block, 41- cam hole, 42- guide rail, 5- holddown spring.
Specific embodiment
Below in conjunction with the accompanying drawings, a specific embodiment of the present invention is described in detail, it is to be understood that the present invention
Protection domain do not limited by specific embodiment.It is to be appreciated that it is mentioned in the implementation below of the present invention
" on ", D score, "left", "right", on the basis of " front " and " reverse side " direction shown in all by each figure, these are used for limiting direction
Word be intended merely to facilitate explanation, do not represent the restriction to concrete technical scheme of the present invention.
The hydraulic injection pump oil quantity regulating device of the present invention passes through the camshaft that rotation is located in oil mass limited block, utilizes
The lateral attitude that the axial rotation of camshaft is converted into oil mass limited block is moved by camshaft overhead cam arc radius center location difference
Dynamic, and then according to actual job Operating condition adjustment injection pump oil mass.
As shown in figure 1, the concrete structure of this hydraulic injection pump oil quantity regulating device includes：Cover plate 1, camshaft 2, support set
3rd, oil mass limited block 4 and holddown spring 5, wherein, cover plate 1 and support set 3 rotate from two ends supporting cam wheel axle 2, oil mass limited block 4
It is located on camshaft 2, and be slidably disposed on support set 3.
The transverse slat of cover plate 1 offers coaxial oil sealing counterbore and camshaft perforation from top to bottom successively.During assembling, oil sealing sinks
In the hole installs oil sealing 11, makes the machine oil in oil pump non-leakage and dustproof effect, the depth of oil sealing counterbore and diameter are according to standard oil
The size design of envelope；Camshaft is bored a hole as unthreaded hole, plays the effect of supporting cam wheel axle top half, it is than the axostylus axostyle of camshaft 2
The big 0.04-0.1mm of diameter, the diameter of the axostylus axostyle of camshaft 2 is fixed according to the hole size of oil sealing 11, with using there being the outside framework oil seal to be
Good, The concrete specification is selected with reference to the countries concerned's standard.
Camshaft 2 includes：Axostylus axostyle 21, and it is inserted into the handle 22 at axostylus axostyle 21 top and the cam being located at axostylus axostyle 21 middle part
23, operator can by push rod from driver's cabin joystick 22, to control the position of rotation of cam 23, realize light, in, weight
The fuel-flow control of three kinds of different loads operating modes（As shown in Figure 3）.Cam 23 has two circular arcs of round and smooth connection, and large circular arc radius are big
It is about the twice of roundlet arc radius.Liang Ge center of arc alternate position spike（Centre-to-centre spacing）Correspond to the oil of severe duty and light duty
Amount is poor, need just to can determine that after bench test wherein the heart away from.Camshaft 2 adopts No. 45 steel, and carries out modifier treatment, to protect
Card contact surface has certain degree of hardness.
In conjunction with Fig. 2 as can be seen that support set 3 top surface offer camshaft support blind hole 31 and be located at this camshaft support blind
The oil mass limited block chute 32 of hole 31 both sides, camshaft support blind hole 31 depth 10mm, diameter 0.04- bigger than the diameter of axostylus axostyle 21
0.1mm.The big 0.04-0.1mm of width of width ratio oil mass limited block 4 contact surface of oil mass limited block chute 32.In order to ensure to cover
The installation site precision of plate 1 and support set 3, the camshaft in the camshaft perforation being mainly to ensure that on cover plate and support set 3 props up
Support blind hole 31 is coaxial, by the finger setting of two positioning between cover plate 1 and support set 3（In figure is not shown）.
Cam hole 41 and guide rail 42 offered on oil mass limited block 4, cam hole 41 with diameter greater than the maximum circular arc of cam 23
Diameter 0.04-0.1mm, cam 23 is placed in cam hole 41 so that when camshaft 2 rotates, cam 23 can move the amount of stirring limited block 4
Dynamic, to realize the variation of oil mass position.Guide rail 42 is two, is opened in the bottom surface of oil mass limited block 4, and is located at cam hole 41
Both sides, are adapted to oil mass limited block chute 32 so that oil mass limited block 4 is under the stirring of cam 23, can slide along oil mass limited block
Groove 32 increase and decrease oil mass position is moved, to determine the size of fuel delivery.
The left end of holddown spring 5 pushes against the riser of cover plate 1, and right-hand member pushes against oil mass limited block 4, to ensure cam 23 and cam
The side wall in hole 41 is in close contact at any time, facilitates cam 23 to stir oil mass limited block 4.Common spring selected by holddown spring 5,
The pressure of offer about 20N when its rigidity can ensure that decrement is maximum in the present case.The height of holddown spring 5 is big according to position
Little selected.
This hydraulic injection pump oil quantity regulating device is simple and reasonable, is located in the cam in oil mass limited block by rotation
The axial-rotation of camshaft is converted into the horizontal of oil mass limited block using camshaft overhead cam arc radius center location difference by axle
Position is moved, and then according to actual job Operating condition adjustment injection pump oil mass so that the electromotor with this mechanical spray oil pump is suitable for
Operating mode is extensive, low cost.
The several specific embodiments being only the present invention disclosed above, but, the present invention is not limited to this, any ability
What the technical staff in domain can think change all should fall into protection scope of the present invention.
Claims (3)
1. a kind of hydraulic injection pump oil quantity regulating device is it is characterised in that include：Cover plate, camshaft, support set, oil mass are spacing
Block and holddown spring, described cover plate and support set support described camshaft rotation from two ends, and described oil mass limited block is located in convex
On wheel shaft, and be slidably disposed on described support set, described holddown spring be pressed on described cover plate and oil mass limited block it
Between；Described cover plate offers coaxial oil sealing counterbore and camshaft perforation from top to bottom successively, installs oil in described oil sealing counterbore
Envelope；Described camshaft includes：Axostylus axostyle, and be inserted into the handle at described axostylus axostyle top and be located at the cam in the middle part of described axostylus axostyle.
2. hydraulic injection pump oil quantity regulating device according to claim 1 it is characterised in that：Described cam has round and smooth company
Connect two circular arcs, large circular arc radius are the twice of roundlet arc radius.
3. hydraulic injection pump oil quantity regulating device according to claim 1 it is characterised in that：Described support set top surface opens up
The oil mass limited block chute having camshaft support blind hole and being located at described camshaft support blind hole both sides, described oil mass limited block
Bottom surface is offered and is adapted to the guide rail sliding with described oil mass limited block chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006879.6A CN103912387B (en) | 2013-01-09 | 2013-01-09 | Mechanical fuel injection pump fuel amount adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006879.6A CN103912387B (en) | 2013-01-09 | 2013-01-09 | Mechanical fuel injection pump fuel amount adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912387A CN103912387A (en) | 2014-07-09 |
| CN103912387B true CN103912387B (en) | 2017-02-08 |
Family
ID=51038334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310006879.6A Active CN103912387B (en) | 2013-01-09 | 2013-01-09 | Mechanical fuel injection pump fuel amount adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103912387B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02161136A (en) * | 1988-12-12 | 1990-06-21 | Nippondenso Co Ltd | Fuel injection device |
| CN201284739Y (en) * | 2008-09-18 | 2009-08-05 | 广西玉柴机器股份有限公司 | Mounting structure for camshaft of mono-block pump |
| DE102009002534A1 (en) * | 2009-04-21 | 2010-10-28 | Robert Bosch Gmbh | Injection pump for diesel engine of motor vehicle, has piston providing on side of cam shaft, and bracket spring enclosing cam in radial distance to side of shaft and springily connects two roller shoes with each other |
| CN102777299A (en) * | 2012-08-13 | 2012-11-14 | 杭州电子科技大学 | Diesel engine variable injection timing oil injection pump |
| CN203098056U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | Oil mass controller of mechanical fuel injection pump |
-
2013
- 2013-01-09 CN CN201310006879.6A patent/CN103912387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02161136A (en) * | 1988-12-12 | 1990-06-21 | Nippondenso Co Ltd | Fuel injection device |
| CN201284739Y (en) * | 2008-09-18 | 2009-08-05 | 广西玉柴机器股份有限公司 | Mounting structure for camshaft of mono-block pump |
| DE102009002534A1 (en) * | 2009-04-21 | 2010-10-28 | Robert Bosch Gmbh | Injection pump for diesel engine of motor vehicle, has piston providing on side of cam shaft, and bracket spring enclosing cam in radial distance to side of shaft and springily connects two roller shoes with each other |
| CN102777299A (en) * | 2012-08-13 | 2012-11-14 | 杭州电子科技大学 | Diesel engine variable injection timing oil injection pump |
| CN203098056U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | Oil mass controller of mechanical fuel injection pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103912387A (en) | 2014-07-09 |
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