CN87216146U - Negative correcting device for diesel centrifugal governor - Google Patents
Negative correcting device for diesel centrifugal governor Download PDFInfo
- Publication number
- CN87216146U CN87216146U CN 87216146 CN87216146U CN87216146U CN 87216146 U CN87216146 U CN 87216146U CN 87216146 CN87216146 CN 87216146 CN 87216146 U CN87216146 U CN 87216146U CN 87216146 U CN87216146 U CN 87216146U
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- China
- Prior art keywords
- negative correction
- speed
- negative
- spring
- stroke
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- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
The utility model provides an improved negative corrected device for a centrifugal governor of a diesel engine, in particular to a supporting point changing fuel delivery negative corrected device controlled by the speed of the engine and used for an in-line fuel injection pump. The utility model is characterized in that a negative corrected frame is arranged, one end is hinged with a governor rod through a lower supporting shaft, and the other end is installed on the main supporting shaft. The parts of the negative corrected device are contained in the negative corrected frame. The utility model has the advantages of simple structure, compactness, convenient adjustment and small friction force.
Description
The utility model relates to a kind of diesel engine centrifugal speed governor negative correction device, particularly a kind of change fulcrum fuel delivery negative correction device that supplies in-line fuel injection pump to use.It is applicable to the characteristic of fuel delivery curve of proofreading and correct diesel engine full throttle low speed segment, solves the problem that diesel engine low speed segment full load is smoldered.
Close with the utility model in the prior art is 7～9 pages of Russian magazine " д в и г а т e л e с т р о-e н и e " 2 phases of nineteen eighty-three, 23～25 pages of 1984 7 phases, the change fulcrum fuel delivery negative correction device of the Soviet Union н д 22/6B4 type distributor type fuel injection pump of 1984 6 phases, 18～19 pages of introductions.The structure of this negative correction device is when the negative correction section is worked an additional fulcrum to be arranged, and makes oil amount regulating mechanism do reversing motion.In this negative correction device, speed-regulating arm supports and adds the same side that fulcrum is positioned at speed regulator transmission shaft and sliding sleeve axis.
The purpose of this utility model provides a kind of improved centrifugal speed governor negative correction device, particularly a kind of simple in structure, compact dimensions, the change fulcrum fuel delivery negative correction device that supplies in-line fuel injection pump to use, it is controlled by engine speed, and can use negative correction spring, adjustment pad, the negative correction stroke adjustmenting screw is adjusted the negative correction characteristic of fuel delivery easily.
Major technique content of the present utility model is: sliding sleeve (2) and centrifugal fly-weight (3) are housed as the rotating speed sense cell on Injection Pump regulator transmission shaft (1), during engine start, because the centrifugal force of flyball is less than the pretightening force of negative correction spring (6), be close on the negative correction framework (15) at speed control rod (5) under the effect of this pretightening force, the two becomes an accurate rigid body.Sell (4) by the sliding sleeve thrust that flyball centrifugal force produces through sphere T shape, speed control rod (5), negative correction spring (6), negative correction stroke shelves nails (11), negative correction stroke adjustmenting screw (12) acts on the negative correction framework (15), and compression primer spring (14), speed control rod (5) and negative correction framework (15) are rotated around middle axle sleeve (10) together, driving connecting rod (8) makes injection pump rack (7) move to the direction that reduces fuel delivery, contact with speed-regulating arm (16) until negative correction framework end face, the starting stroke finishes (see figure 3), engine speed continues to rise, flyball centrifugal force increases, when the sliding sleeve thrust that produces by flyball centrifugal force during greater than the pretightening force of negative correction spring (6), the negative correction active section begins, at this moment sliding sleeve (2) is through sphere T shape pin (4) compression negative correction spring (6), speed control rod (5) is moved in the direction of the clock around lower support axle (17), and drive connecting rod (8) makes injection pump rack (7) move to the direction that increases fuel delivery, contact until the end face of sphere T shape pin (4) with negative correction stroke retaining nail (11), the negative correction process finishes (see figure 4).In the negative correction process, negative correction framework (15) and speed-regulating arm (16) are motionless, and speed control rod (5) rotates around lower support axle (17) (promptly additional fulcrum), at this moment speed control rod (5) breaks away from the end face of negative correction framework (15), therefore speed control rod (5) is gone up the hole that is connected with middle axle sleeve (10) and should be made beans shape hole or the diameter circular hole greater than middle axle sleeve external diameter, in the negative correction process, fuel delivery increases with the rising of rotating speed, in negative correction section working speed scope, fuel delivery is littler than the fuel delivery under the corresponding rotating speed of the diesel engine that is unkitted the negative correction device, therefore can improve the exhaust smoke of diesel engine full throttle low speed segment, reduce oil consumption.
Sphere T shape pin (4) and negative correction stroke retaining were followed closely the distance, delta between (11) end face when the available negative correction stroke adjustmenting screw of the negative correction device that the utility model provides (12) change negative correction process began, and promptly adjusted the size of negative correction stroke.Simultaneously can also be by selecting different negative correction springs (6) for use and adjusting rigidity and the pretightening force that pad (13) changes spring, to satisfy the required characteristic of fuel delivery coupling requirement of various diesel engines.
The advantage that the utility model is compared with prior art had is: owing to adopt the negative correction frame structure that is sleeved on speed-regulating arm supporting axle (9) and the middle axle sleeve (10), parts such as speed control rod, speed-regulating arm, sphere T shape pin, negative correction stroke retaining nail, negative correction spring, negative correction stroke adjustmenting screw all are included in the negative correction framework.While is the transmission shaft of sphere T shape pin, negative correction spring, negative correction stroke retaining nail, negative correction stroke adjustmenting screw and speed regulator wherein.Sliding sleeve is positioned on the same axis, and speed-regulating arm supporting axle and lower support axle lay respectively at the both sides of above-mentioned axis, so this negative correction apparatus structure is simple, and compact dimensions, another advantage of the present utility model is easy to adjust.When needs are changed the negative correction spring or are adjusted pad, only need the negative correction stroke adjustmenting screw is back-outed and will not disintegrate by speed regulator, therefore can on diesel engine, adjust.
Below in conjunction with the description of drawings specific embodiment of the utility model.
Fig. 1 is a kind of longitudinal section of in-line fuel injection pump centrifugal speed governor negative correction device.
Fig. 2 is that the B of this negative correction device is to view.
Fig. 3 is that state of starting operating finishes the partial sectional view of negative correction device when the negative correction section begins.
The partial sectional view of negative correction device when Fig. 4 is the end of negative correction section.
In Fig. 1, sliding sleeve (2) and centrifugal fly-weight (3) are housed on the in-line fuel injection pump speed regulator transmission shaft (1) as the rotating speed sense cell.Negative correction framework (15) is a punching press weldment, and its lower end is hinged through lower support axle (17) and speed control rod (5), and its upper end is contained on the speed-regulating arm supporting axle (9) through middle axle sleeve (10).Can see by Fig. 1 and Fig. 2, the sphere T shape pin (4) of negative correction device, speed control rod (5), negative correction spring (6), middle axle sleeve (10), negative correction stroke retaining nail (11), negative correction stroke adjustmenting screw (12), speed-regulating arm (16), lower support axle (17) all is included in the negative correction framework (15), sphere T shape pin (4) in this negative correction device, negative correction spring (6), negative correction stroke retaining nail (11), the transmission shaft (1) of negative correction stroke adjustmenting screw (12) and speed regulator, sliding sleeve (2) is positioned on the same axis, and speed-regulating arm supporting axle (9) and lower support axle (17) lay respectively at the both sides of above-mentioned axis, negative correction framework (15) and speed-regulating arm (16) are contained on the speed-regulating arm supporting axle (9) through middle axle sleeve (10), and the fixed-site of supporting axle (9) is on governor housing (20).Speed control rod (5) is the stamping part of a bending forming, and its upper end becomes rod, links to each other with injection pump rack (7) through connecting rod (8).Its Lower Half bends to channel steel shape, and the lower end is hinged through lower support axle (17) and negative correction framework (15), and the hole that the speed control rod middle part is connected with middle axle sleeve (10) is a beans shape hole.Sphere T shape pin (4) is contained in the hole of speed control rod bottom, fixes its axial position by pad (18) and circlip for shaft (19).The adjustment pad (13) of adjusting negative correction initial tension of spring is housed between negative correction stroke retaining nail (11) and negative correction spring (6), the position at each part place when Figure 1 shows that diesel engine unstart still.Fig. 3 finishes the position when the negative correction section begins for state of starting operating.At this moment the distance, delta between sphere T shape pin (4) and negative correction stroke retaining nail (11) end face is exactly the negative correction stroke.The position of negative correction device when Fig. 4 finishes for the negative correction section.At this moment the thrust of sliding sleeve is pressed on speed control rod (5) on the negative correction framework (15) through sphere T shape pin (4) and negative correction stroke retaining nail (11) again, become an accurate rigid body, so only in the negative correction section, speed control rod (5) just rotates around additional fulcrum (lower support axle).Under state of starting operating and all the other operating modes, speed control rod (5) all is combined into an accurate rigid body with negative correction framework (15), rotate around main fulcrum (speed-regulating arm supporting axle (9)) together, therefore, this speed regulator has only a supporting axle to play hinge effect under any adjusting operating mode, can reduce to inferior limit to frictional force, help improving the performance of speed regulator.In addition, when needs are changed the negative correction spring or are adjusted pad, only need unclamp locking nut, negative correction stroke adjustmenting screw (12) is back-outed from negative correction framework (15), and needn't dismantle speed regulator, just can adjust the rigidity and the pretightening force of negative correction spring easily, satisfy the requirement of diesel engine characteristic of fuel delivery.
Claims (3)
1, diesel engine centrifugal speed governor negative correction device, particularly a kind of change fulcrum fuel delivery negative correction device, comprise sphere T shape pin [4], speed control rod [5], negative correction spring [6], speed-regulating arm supporting axle [9], middle axle sleeve [10], negative correction stroke retaining nail [11], negative correction stroke adjustmenting screw [12], speed-regulating arm [16], lower support axle [17], it is characterized in that:
A. have a negative correction framework [15], its lower end hinged through supporting axle [17] and speed control rod [5], its upper end is contained on the speed-regulating arm supporting axle [9] through middle axle sleeve [10],
Sphere T shape pin [4], the speed control rod [5] of b, negative correction device, negative correction spring [6], middle axle sleeve [10], negative correction stroke retaining nail [11], negative correction stroke adjustmenting screw [12], speed-regulating arm [16], lower support axle [17] all are included in the negative correction framework [15]
The sphere T shape of c, negative correction device pin [4], negative correction spring [6], negative correction stroke retaining nail [11], negative correction stroke adjustmenting screw [12] and speed regulator transmission shaft [12] and speed regulator transmission shaft [1], sliding sleeve [2] are positioned on the same axis, and speed-regulating arm supporting axle [9], lower support axle [17] lay respectively at the both sides of above-mentioned axis.
2, negative correction device according to claim 1 is characterized in that being equipped with the adjustment pad (13) of regulating the negative correction initial tension of spring between negative correction stroke retaining nail (11) and negative correction spring (6).
3, negative correction device according to claim 1 is characterized in that hole that speed control rod (5) is connected with middle axle sleeve (10) is a beans shape hole or greater than the circular hole of middle axle sleeve external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87216146 CN87216146U (en) | 1987-12-05 | 1987-12-05 | Negative correcting device for diesel centrifugal governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87216146 CN87216146U (en) | 1987-12-05 | 1987-12-05 | Negative correcting device for diesel centrifugal governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87216146U true CN87216146U (en) | 1988-11-02 |
Family
ID=4830144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87216146 Withdrawn CN87216146U (en) | 1987-12-05 | 1987-12-05 | Negative correcting device for diesel centrifugal governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87216146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089448A (en) * | 2016-08-16 | 2016-11-09 | 无锡威孚高科技集团股份有限公司 | Negative correction mechanism for diesel engine of forklift truck high-pressure oil pump speed regulator |
-
1987
- 1987-12-05 CN CN 87216146 patent/CN87216146U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089448A (en) * | 2016-08-16 | 2016-11-09 | 无锡威孚高科技集团股份有限公司 | Negative correction mechanism for diesel engine of forklift truck high-pressure oil pump speed regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |