CN207777001U - Advancing device for diesel engine array jet pump - Google Patents
Advancing device for diesel engine array jet pump Download PDFInfo
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- CN207777001U CN207777001U CN201820040061.4U CN201820040061U CN207777001U CN 207777001 U CN207777001 U CN 207777001U CN 201820040061 U CN201820040061 U CN 201820040061U CN 207777001 U CN207777001 U CN 207777001U
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- driven disc
- accommodating hole
- flyball
- advancing device
- eccentricity wheel
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Abstract
The utility model provides a kind of advancing device for diesel engine array jet pump.Advancing device includes driving gear, driven disc, flyball and cam propeller boss.Driven disc is connected to the inside of driving gear, and driven disc is equipped with top accommodating hole and bottom accommodating hole.Top accommodating hole and determine to be equipped with small eccentricity wheel and large eccentricity wheel in portion's accommodating hole, driving gear and the drive connection of small eccentricity wheel.Accommodating cavity is additionally provided on driven disc.Flyball is set in accommodating cavity, and spring shaft is equipped in flyball, and spring is arranged on spring shaft, and flyball is sequentially connected with large eccentricity wheel.Cam propeller boss is for being connected to camshaft, cam propeller boss is arranged in driven disc along the axis direction of driven disc, the internal face of cam propeller boss is equipped with keyway, line between the center of top accommodating hole and the center of driven disc is reference line, ranging from 111 ° 40 '~113 ° 55 ' of the angle between the direction of the center line of keyway and the direction of the reference line.The advancing device can reduce the shake of engine.
Description
Technical field
The utility model is related to a kind of advancing devices for diesel engine array jet pump.
Background technology
Diesel engine array jet pump is mainly used for matching diesel engine, and is installed to the public vapour using diesel oil as fuel
On the power assemblies such as vehicle, truck.Diesel engine array jet pump is by several big component groups such as advancing device, the pump housing, oil transfer pump, governor
At.Using the equilibrium relation of flyball centrifugal force and spring force in advancing device, change angle of the camshaft relative to timing gears, with
Reach injection advance angle with rotating speed to rise and increased requirement.
Advancing device carries out a cycle, and engine carries out two cycles.That is, 1 ° of the advance angle of advancing device is suitable
In 2 ° of the advance angle of engine.In the prior art, for the advancing device for 4D33 diesel engines, make turning for diesel engine
Highest advance angle between speed and injection timing is 7 °, and under the operating mode to run at high speed, advance angle is close to 6 °, correspondingly, starts
The advance angle of machine will reach 12 °.To which the degree of advance of engine is excessive, the state labile when running at high speed operating mode, is easy
It shakes.
To which advancing device in the prior art has the defect for making engine be easy shake.
Utility model content
The technical problems to be solved in the utility model is so that engine is held in order to overcome advancing device in the prior art to have
The defect easily shaken provides a kind of advancing device for diesel engine array jet pump.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of advancing device for diesel engine array jet pump, diesel engine array jet pump includes camshaft, and feature exists
In advancing device includes：
Drive gear；
Driven disc, the driven disc are connected to the inside of the driving gear, and the top of the driven disc holds equipped with top
Set hole, bottom is equipped with bottom accommodating hole, the central shaft of the top accommodating hole and the bottom accommodating hole about the driven disc
Line is symmetrical, the top accommodating hole and described determines in portion's accommodating hole to be equipped with small eccentricity wheel and large eccentricity wheel, institute successively from inside to outside
Driving gear is stated to be sequentially connected with the small eccentricity wheel；It is additionally provided with accommodating cavity on the driven disc；
Flyball, the flyball are set in the accommodating cavity, and spring shaft is equipped in the flyball, is arranged on the spring shaft
Spring, the flyball are sequentially connected with the large eccentricity wheel；
Cam propeller boss, the cam propeller boss is for being connected to the camshaft, and the cam propeller boss is along the driven disc
Axis direction is arranged in the driven disc, and the internal face of the cam propeller boss is equipped with keyway, the center of the top accommodating hole
Line between the center of the driven disc is reference line, the direction in the direction of the center line of the keyway and the reference line
Between ranging from 111 ° 40 '~113 ° 55 ' of angle.
In the present solution, flyball overcomes the active force of spring to fly to open outward, when flyball is winged outside, flyball stirs large eccentricity
Wheel movement, due to the effect of small eccentricity wheel, the existing rotation of large eccentricity wheel has revolution again, due to the result of eccentric motion so that from
Moving plate generates phase difference with driving gear.Angle between the direction of the center line of keyway and the direction of reference line is larger, favorably
In giving engine one preset advance angle, the full aduance of engine is reduced, the change procedure of advance angle is shortened, has
Conducive to the operation for making engine relatively stable, so as to reduce the shake of engine.
Preferably, the angle between the direction of the center line of the keyway and the direction of the reference line is 112 ° 25 '.
When angle is excessive, fuel feeding can be influenced；When angle is too small, to the improvement unobvious of engine shake.In the present solution, angle uses
112 ° 25 ', it can either realize reliable fuel feeding, and more can reliably reduce the shake of engine.
Preferably, passing through bayonet connection between the driving gear and the driven disc.
Preferably, the driving gear is sequentially connected by the first trundle in the small eccentricity wheel, wherein described first
Trundle is arranged in the top accommodating hole, the bottom accommodating hole, and the small eccentricity wheel is sheathed on first trundle.
Preferably, the flyball is sequentially connected by the second trundle and the large eccentricity wheel.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can arbitrarily combine to get the utility model respectively compared with
Good example.
The positive effect of the utility model is：
For the advancing device, the angle between the direction of the center line of keyway and the direction of reference line is larger, be conducive to
One preset advance angle of engine, reduces the full aduance of engine, shortens the change procedure of advance angle, be conducive to
So that the operation that engine is relatively stable, so as to reduce the shake of engine.
Description of the drawings
Fig. 1 is that the part-structure of the advancing device for diesel engine array jet pump of one preferred embodiment of the utility model shows
It is intended to.
Fig. 2 is the decomposed knot of the advancing device for diesel engine array jet pump of one preferred embodiment of the utility model
Structure schematic diagram.
Reference sign：
10 driving gears
20 driven discs
201 top accommodating holes
202 bottom accommodating holes
30 cam propeller boss
301 keyways
40 small eccentricity wheels
50 large eccentricity wheels
60 bayonets
α angles
Specific implementation mode
A preferred embodiment is named, and completely illustrates the utility model in conjunction with attached drawing to become apparent from.
The present embodiment discloses a kind of advancing device for diesel engine array jet pump, and diesel engine array jet pump includes cam
Axis.- 2 are understood referring to Fig.1, and advancing device includes driving gear 10, driven disc 20, flyball (not shown) and camshaft
Hub.Driven disc 20 is connected to the inside of driving gear 10, and the top of driven disc 20 is equipped with top accommodating hole 201, bottom is equipped with bottom
Portion's accommodating hole 202, top accommodating hole 201 and bottom accommodating hole 202 are symmetrical about the central axis of driven disc 20, and top is accommodating
Hole 201 and determine in portion's accommodating hole to be equipped with small eccentricity wheel 40 and large eccentricity wheel 50 (referring to Fig. 2) successively from inside to outside, driving gear 10
It is sequentially connected with small eccentricity wheel 40.It is additionally provided with accommodating cavity on driven disc 20.Flyball is set in accommodating cavity, and spring shaft is equipped in flyball
(not shown), spring (not shown) is arranged on spring shaft, and flyball is sequentially connected with large eccentricity wheel 50.Cam propeller boss
For being connected to camshaft, cam propeller boss is arranged in driven disc 20, the internal face of cam propeller boss along the axis direction of driven disc 20
It is equipped with keyway 301, the line between the center and the center of driven disc 20 of top accommodating hole 201 is reference line, keyway 301
The direction of center line and the direction of reference line between ranging from 111 ° 40 '~113 ° 55 ' of angle α.Wherein, in this implementation
In mode, angle α is 112 ° 25 '.In other alternative implementations, any other number during α is 111 ° 40 '~113 ° 55 ' desirable
Value.
Flyball overcomes the active force of spring to fly to open outward, and when flyball is winged outside, flyball stirs the movement of large eccentricity wheel 50,
Due to the effect of small eccentricity wheel 40, the 50 existing rotation of large eccentricity wheel has revolution again, due to the result of eccentric motion so that driven disc
20 generate phase difference with driving gear 10.Angle between the direction of the center line of keyway 301 and the direction of reference line is larger, has
Conducive to giving engine one preset advance angle, the full aduance of engine is reduced, the change procedure of advance angle is shortened,
The relatively stable operation of engine is advantageously allowed, so as to reduce the shake of engine.
When angle is excessive, fuel feeding can be influenced；When angle is too small, to the improvement unobvious of engine shake.In this embodiment party
In formula, angle uses 112 ° 25 ', can either realize reliable fuel feeding, and more can reliably reduce the shake of engine.
In an alternative embodiment, drives and connected by bayonet 60 between gear 10 and driven disc 20.Another
In alternative embodiment, driving gear 10 is sequentially connected by the first trundle (not shown) in small eccentricity wheel 40,
Wherein, the first trundle is arranged in top accommodating hole 201, bottom accommodating hole 202, and small eccentricity wheel 40 is sheathed on the first trundle.
In another alternative embodiment, flyball is sequentially connected by the second trundle (not shown) and large eccentricity wheel 50.
For the advancing device in present embodiment, flyball overcomes the active force of spring to fly to open outward, when flyball is winged outside,
Flyball stirs the movement of large eccentricity wheel 50, and due to the effect of small eccentricity wheel 40, the 50 existing rotation of large eccentricity wheel has revolution again, due to inclined
The result of heart movement so that driven disc 20 generates phase difference with driving gear 10.The direction of the center line of keyway 301 and reference
Angle between the direction of line is larger, is conducive to give engine one preset advance angle, the maximum for reducing engine shifts to an earlier date
Angle shortens the change procedure of advance angle, the relatively stable operation of engine is advantageously allowed, so as to reduce engine
Shake.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the scope of protection of the utility model.
Claims (5)
1. a kind of advancing device for diesel engine array jet pump, diesel engine array jet pump includes camshaft, which is characterized in that
Advancing device includes：
Drive gear；
Driven disc, the driven disc are connected to the inside of the driving gear, the top of the driven disc be equipped with top accommodating hole,
Bottom is equipped with bottom accommodating hole, the central axis pair of the top accommodating hole and the bottom accommodating hole about the driven disc
Claim, the top accommodating hole and described determine in portion's accommodating hole from inside to outside successively equipped with small eccentricity wheel and large eccentricity wheel, the drive
Moving gear is sequentially connected with the small eccentricity wheel；It is additionally provided with accommodating cavity on the driven disc；
Flyball, the flyball are set in the accommodating cavity, and spring shaft is equipped in the flyball, bullet is arranged on the spring shaft
Spring, the flyball are sequentially connected with the large eccentricity wheel；
Cam propeller boss, the cam propeller boss is for being connected to the camshaft, axis of the cam propeller boss along the driven disc
Direction is arranged in the driven disc, and the internal face of the cam propeller boss is equipped with keyway, the center of the top accommodating hole and institute
The line stated between the center of driven disc is reference line, between the direction of the center line of the keyway and the direction of the reference line
Ranging from 111 ° 40 '~113 ° 55 ' of angle.
2. being used for the advancing device of diesel engine array jet pump as described in claim 1, which is characterized in that the center of the keyway
Angle between the direction of line and the direction of the reference line is 112 ° 25 '.
3. as described in claim 1 be used for diesel engine array jet pump advancing device, which is characterized in that the driving gear with
Pass through bayonet connection between the driven disc.
4. being used for the advancing device of diesel engine array jet pump as described in claim 1, which is characterized in that the driving gear is logical
It crosses the first trundle to be sequentially connected in the small eccentricity wheel, wherein first trundle is arranged in the top accommodating hole, institute
Bottom accommodating hole is stated, the small eccentricity wheel is sheathed on first trundle.
5. the advancing device for diesel engine array jet pump as described in any one of claim 1-4, which is characterized in that institute
Flyball is stated to be sequentially connected by the second trundle and the large eccentricity wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040061.4U CN207777001U (en) | 2018-01-10 | 2018-01-10 | Advancing device for diesel engine array jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040061.4U CN207777001U (en) | 2018-01-10 | 2018-01-10 | Advancing device for diesel engine array jet pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207777001U true CN207777001U (en) | 2018-08-28 |
Family
ID=63224131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820040061.4U Active CN207777001U (en) | 2018-01-10 | 2018-01-10 | Advancing device for diesel engine array jet pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207777001U (en) |
-
2018
- 2018-01-10 CN CN201820040061.4U patent/CN207777001U/en active Active
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