CN102705084B - Negative correction device for high-pressure fuel injection pump speed governor of fuel injection system - Google Patents
Negative correction device for high-pressure fuel injection pump speed governor of fuel injection system Download PDFInfo
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- CN102705084B CN102705084B CN201210181502.XA CN201210181502A CN102705084B CN 102705084 B CN102705084 B CN 102705084B CN 201210181502 A CN201210181502 A CN 201210181502A CN 102705084 B CN102705084 B CN 102705084B
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Abstract
The invention discloses a negative correction device applied to a high-pressure fuel injection pump speed governor of a fuel injection system. The negative correction device comprises a tension lever, a bracket part, a correction bracket part, a leaf spring, a correcting value regulation component, a corrector component, a swinging arm, a rocker arm, a rack bar connecting rod, a stirring pin, a T-shaped supporting block and a speed governing sliding sleeve, wherein the tension lever is hinged to a speed governor cover; the bracket part is hinged with the tension lever; the correction bracket part is hinged to the bracket part through a leaf spring shaft; the leaf spring is wound on the leaf spring shaft; the correcting value regulation component and the corrector component are arranged on the tension lever; the swinging arm and the rocker arm are hinged with the correction bracket part; the rack bar connecting rod is hinged with the swinging arm; the stirring pin for stirring a stirring fork is arranged on the rocker arm; the other end of the stirring fork is movably connected with a lever shaft; the T-shaped supporting block is arranged at the lower end of the bracket part through a shaft; and the speed governing sliding sleeve is arranged on the speed governor cover. A required correcting value is regulated by the correcting value regulation component; a required correction working rotating speed, namely a low-speed working condition range, and is regulated by the corrector; and the oil supply of each cycle under a low-speed working condition can be reduced by the regulation, so that torque, oil consumption and exhaust temperature under the low-speed working condition are reduced.
Description
Technical field
The present invention relates to a kind of high-pressure injection pump technical field of diesel engine, particularly a kind of negative correction device being applied to the high pressure oil pump speed regulator of fuel injection system.
Background technique
Existing non-rice habitats mid low speed diesel fuel engine high pressure Injection Pump variable speed governor speed characteristics determine motor and cannot reduce at speed operation moment of torsion, and temperature is high, oil consumption is high to cause motor to be arranged.
The centrifugal governor of diesel engines at present high pressure oil pump generally only has oil mass positive correction device.In order to solve the smoke intensity problem of diesel engine low velocity discharge, those skilled in the art is devoted to the developmental research of new fuel correction device one after another, and has developed oil quantity correction mechanism that several comprise negative correction mechanism, that improve.But; due to these mechanisms structure and adjustment mode perfect not; cause can not obviously and reliably to obtain during diesel engine low cruise and subtract functional oil to meet smoke intensity standard; the composite structure more complicated of the positive and negative aligning gear of prior art simultaneously, also usually can affect the delivery volume starting oil mass.
Chinese patent Authorization Notice No. CN2241779 discloses a kind of external regulation type oil mass check plus minus device of diesel injection pump speed regulator, its pull bar is arranged two position limit pins, pull bar driver plate side is provided with supporting member, also comprise the oil quantity limited seat sleeve stretched out outside rear wall, wear soft pivot screw wherein, be positioned at the leverage and Returnning spring etc. of driver plate side, leverage comprises lever, swivel joint and eccentric lever fulcrum etc., swivel joint is located at supporting member respectively and is connected lever one end, on pull bar between lever the other end supporting position limit pin, can level and turning round up and down, correcting spring is set on the soft pivot screw in cover for seat.
Chinese patent Authorization Notice No. CN2368982 discloses a kind of diesel injection pump speed regulator good fortune negative correction device, be support adjustable stem by speed-regulating arm, governor lever, T word, negative correction spring, negative correction bar, micrometer adjusting screw, primer spring, startup push rod form, the micrometer adjusting screw that T word supports adjustable stem upper end is by micrometer adjusting screw, negative correction bar and fly block sliding sleeve and connect.The lower end that T word supports adjustable stem is by with startup push rod with start spring and connect with governor lever.
The negative correction device of the BQ pump speed regulator of China Patent No. 200420019825X, lower end and the speed-regulating arm of its negative correction support are hinged, middle part is connected with governor lever by negative correction connecting pin, because negative correction support and governor lever are without making both become as a whole object when low speed as reduction torsion spring and so on, so both are loosely organized, especially, when Injection Pump adjusts, ratch zero-bit changes, the difficulty that the adjustment of these oil feed pumps and use bring with the adjustment of negative correction device.
The negative correction of jetting pump speed regulating machine disclosed in Chinese patent Authorization Notice No. CN201106491 and supercharging compensate apparatus, the control speed lever part of its negative correction device is made up of governor lever, negative correction support, negative correction connecting pin and negative correction reduction torsion spring etc., and they can around swings such as the jack shafts through speed-regulating arm lining.
Summary of the invention
The problem that technical problem to be solved by this invention is large for existing high-pressure fuel-feed pump speed regulator RSUV low speed torque, row's temperature is high, oil consumption is high and the above-mentioned technical problem existing for existing negative correction mechanism and a kind of negative correction device being applied to the high pressure oil pump speed regulator of fuel injection system is provided.This check plus minus device can reduce the fuel delivery per cycle under speed operation, and make the reduction of speed operation moment of torsion, oil consumption reduces, row's temperature drop is low, speed operation can save oil mass 15% ~ 20%.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
Be applied to a negative correction device for the high pressure oil pump speed regulator of fuel injection system, comprise governor housing and governor cover, described governor cover is arranged on governor housing, it is characterized in that, also comprises:
One to be hinged on the pulling force lever on described governor cover by supporting lever axle, described supporting lever axle is positioned at described pulling force lever position on the upper side and described pulling force lever swings around described supporting lever axle;
Upper end is by the bracket component of lever shaft together with the upper end thereof of described pulling force lever;
Be hinged on the correcting bracket parts on described bracket component by described spring axle, described correcting bracket parts are provided with a catch spring component, described correcting bracket parts swing around described spring axle;
Sheet spring on described spring axle, one end of described spring is fixed on described bracket component, and the other end of sheet spring leans against on described catch spring component;
One is arranged on the correcting value adjustment component on described pulling force lever neutral position;
One is arranged on the corrector parts on described pulling force lever lower end position; Described corrector component settings plays the rotating speed of corrective function;
One lower end and the hinged swing arm of described correcting bracket component upper ends;
The ratch connecting rod of one end and described swing arm upper end thereof, the other end of described ratch connecting rod is provided with ratch connecting pin;
One upper end and the hinged rocking arm of described correcting bracket component upper ends, the lower end of described rocking arm is provided with finger;
One to be bearing in the shift fork on governor cover by fork support member, described shift fork one end is provided with prong, and the other end is flexibly connected with described lever shaft, and described finger is inserted in described prong, and described finger stirs shift fork, and described shift fork swings around described lever shaft;
Be located in the T-shaped anchor plate of described bracket component lower end;
One is arranged on the speed governing sliding sleeve on T-shaped anchor plate.
The present invention also comprises the lever adjusting screw that is arranged on described governor cover, the spiral shell head interior edge face of described lever adjusting screw and the lower end in contact of described pulling force lever.
In another preferred embodiment of the invention, described catch spring component is a sheet spring pivot pin being arranged on described correcting bracket parts, described correcting value adjustment component comprise be threadedly connected to correcting value adjustment screw on described pulling force lever and and fastening screw nut on described correcting value adjustment screw and the correcting value regulator plate that is fixed on described correcting value adjustment screw; Described correcting bracket parts are when described spring axle swings, and described spring pivot pin can be inconsistent with described correcting value regulator plate.
In another preferred embodiment of the invention, the upper end of described correcting bracket parts is provided with a swing arm sleeve, in described swing arm sleeve, axle is provided with a pitman arm shaft, and described swing arm lower end is articulated with one end of described pitman arm shaft, and the upper end thereof of described rocking arm is in the other end of described pitman arm shaft.
The other end of described shift fork is provided with waist shaped hole; Described lever shaft inserts in described waist shaped hole.
Described fork support member comprises one end by supporting lever axle sleeve and the support lever of support lever supporting on governor cover, the other end of described support lever is provided with one in order to support the declutch shift shaft of shift fork, and the neutral position axle of described shift fork is located on described declutch shift shaft.
Owing to have employed technological scheme as above, speed operation rack position of the present invention is little, and every fuel delivery per cycle is few, reduces speed operation moment of torsion.The present invention can reduce the fuel delivery per cycle under speed operation, and make the reduction of speed operation moment of torsion, oil consumption reduces, row's temperature drop is low, speed operation can save oil mass 15% ~ 20%.
Accompanying drawing explanation
Fig. 1 is the structural representation of negative correction device of the present invention.
Fig. 2 is the rear view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the plan view of Fig. 1.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See Fig. 1 to Fig. 4, the negative correction device being applied to the high pressure oil pump speed regulator of fuel injection system provided in figure, comprises governor housing and governor cover, and governor cover is arranged on governor housing and (is in figure and illustrates).
The position on the lower side of the pulling force lever 100 of this negative correction device is provided with lever shaft 110, pulling force lever 100 is extended in one end of lever shaft 110, and being located in governor cover (not shown) by lever axle sleeve 120 axle, such pulling force lever 100 just can swing around lever shaft 110.The other end of lever shaft 110 equally also extends pulling force lever 100, as the center of circle that fork 200 swings.
One correcting value adjustment component 140 is installed in the neutral position of pulling force lever 100.Correcting value adjustment component 140 comprises the correcting value be threadedly connected on pulling force lever 100 and adjusts screw 141 and and adjust the fastening screw nut 142 on screw 141 at correcting value.
At the lower end position of pulling force lever 100, corrector parts 150 are installed.Corrector parts 150 are identical with existing corrector modular construction, do not repeat them here.These corrector parts 150 are mainly used to set the rotating speed worked.
Separately a lever adjusting screw 160 is installed on governor cover, the spiral shell head interior edge face of this lever adjusting screw 160 and the lower end in contact of pulling force lever 100.When adjustment (adjusting) lever adjusting screw 160, the lower end of pulling force lever 100 can be made with supporting lever axle 130 for a spot wobble.
The upper end thereof of bracket component 300 is on supporting lever axle 130, and bracket component 300 can swing around supporting lever axle 130.A T-shaped anchor plate 310 is provided with at the lower end axle of bracket component 300.
The lower end of correcting bracket parts 400 is hinged on the neutral position of bracket component 300 by sheet spring axle 410, and correcting bracket parts 400 are center of circle reciprocally swinging with sheet spring axle 410.Be provided with a catch spring component in the neutral position of correcting bracket parts 400, its catch spring component is a sheet spring pivot pin 420 being arranged on correcting bracket parts 400.
Sheet spring 430 is around on sheet spring axle 410, and one end of this sheet spring 430 is fixed on bracket component 300 by support attachment pegs 440, and the other end of sheet spring 430 leans against on sheet spring pivot pin 420.Sheet spring 430 makes correcting bracket parts 400 reset by sheet spring pivot pin 420.
Be provided with a swing arm sleeve 450 in the upper end of correcting bracket parts 400, in swing arm sleeve 450, axle is provided with a pitman arm shaft 460, and swing arm 500 lower end is articulated with one end of pitman arm shaft 460, and the upper end thereof of rocking arm 600 is in the other end of pitman arm shaft 460.The axle head of this one end pitman arm shaft 460 being hinged with rocking arm 600 is rotary with lock nut 470 and locking nut 480.
One end of ratch connecting rod 700 is by the upper end thereof of connecting pin 710 with swing arm 500, and the other end is hinged by ratch connecting pin 720 and ratch.
A finger 610 is provided with in the lower end of rocking arm 600.This finger 610 is inserted in the prong 210 of shift fork 200 lower end, offers a waist shaped hole 220 in the upper end of shift fork 200, and the other end of lever shaft 110 is inserted in this waist shaped hole 220.
Shift fork 200 is bearing on governor cover by fork support member, this fork support member comprises one end by supporting lever axle sleeve 230 with support that lever 240 is bearing in the support lever 250 on governor cover, support that the other end of lever 250 is provided with one in order to support the declutch shift shaft 260 of shift fork 200, shift fork 200 axle is located on declutch shift shaft 260.
The working principle of negative correction device of the present invention is as follows: first adjust at the beginning of pull bar and establish stroke, adjustment negative correcting quantity, bracket component 300 and swing arm 500 translation is simultaneously promoted by screw 140 contact spring shaft pin 420, T-shaped block is made to depart from pulling force lever 100 certain distance, the negative correcting quantity size that the size of this distance is setting is determined, regulate corrector parts 150 again, set the rotating speed correcting and work.Overdrive gear unit drives flyball parts speedup to rotate by motor-driven gear motivational drive, and flyball rotates the centrifugal force produced makes flyball movable block promote the axial motion of speed governing sliding sleeve 800, promotes T-shaped anchor plate 310 and also moves vertically.T-shaped anchor plate 310 contacts corrector parts 150, corrector parts 150 medi-spring works, when rotating speed rises to the rotating speed that the correction set by corrector parts 150 works, the lower end that T-shaped anchor plate 310 promotes bracket component 300 under flyball centrifugal action is moved backward, bracket component 300 drives correcting bracket parts 400 lower end synchronously to move backward, when the correcting value regulator plate 143 in correcting value adjustment component 140 encountered by the sheet spring pivot pin 420 on correcting bracket parts 400, if flyball rotating speed is also in rising, centrifugal force continues to increase, the lower end that T-shaped anchor plate 310 promotes bracket component 300 under flyball centrifugal action continues to move backward, bracket component 300 drives correcting bracket parts 400 lower end synchronously to continue to move backward, this time slice spring pivot pin 420 is as a motion fulcrum, correcting bracket parts 400 upper end drives pitman arm shaft 460 to be that the center of circle outwards swings around the axle center of sheet spring pivot pin 420, pitman arm shaft 460 is in the outside swing process in the center of circle around the axle center of sheet spring pivot pin 420, outwards move for floating fulcrum with finger 610 in the upper end that Timing Belt shakes arm 600, in the outside movement process in lower end of swing arm 500, by connecting pin 710, ratch connecting rod 700, ratch connecting pin 720 is moved forward, rack position is caused to increase, now Injection Pump fuel delivery increases, otherwise Injection Pump fuel delivery reduces, complete negative correction process.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates structural principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain has appending claims and equivalent thereof to define.
Claims (6)
1. be applied to a negative correction device for non-rice habitats mid low speed diesel fuel engine high pressure Injection Pump, comprise governor housing and governor cover, described governor cover is arranged on governor housing, it is characterized in that, also comprises:
One to be hinged on the pulling force lever on described governor cover by supporting lever axle, described supporting lever axle is positioned at described pulling force lever position on the lower side and described pulling force lever swings around described supporting lever axle;
Upper end is by the bracket component of lever shaft together with the upper end thereof of described pulling force lever;
Be hinged on the correcting bracket parts on described bracket component by sheet spring axle, described correcting bracket parts are provided with a catch spring component, described correcting bracket parts swing around described spring axle;
Sheet spring on described spring axle, one end of described spring is fixed on described bracket component, and the other end of sheet spring leans against on described catch spring component;
One is arranged on the correcting value adjustment component on described pulling force lever neutral position;
One is arranged on the corrector parts on described pulling force lever lower end position; Described corrector component settings plays the rotating speed of corrective function;
One lower end and the hinged swing arm of described correcting bracket component upper ends;
The ratch connecting rod of one end and described swing arm upper end thereof, the other end of described ratch connecting rod is provided with ratch connecting pin;
One upper end and the hinged rocking arm of described correcting bracket component upper ends, the lower end of described rocking arm is provided with finger;
One to be bearing in the shift fork on governor cover by shift fork support member, described shift fork one end is provided with prong, and the other end is flexibly connected with described lever shaft, and described finger is inserted in described prong, and described finger stirs shift fork, and described shift fork swings around described lever shaft.
2. negative correction device as claimed in claim 1, is characterized in that, also comprise the lever adjusting screw that is arranged on described governor cover, the spiral shell head interior edge face of described lever adjusting screw and the lower end in contact of described pulling force lever.
3. negative correction device as claimed in claim 1 or 2, it is characterized in that, described catch spring component is a sheet spring pivot pin being arranged on described correcting bracket parts, described correcting value adjustment component comprise be threadedly connected to correcting value adjustment screw on described pulling force lever and and fastening screw nut on described correcting value adjustment screw and the correcting value regulator plate that is fixed on described correcting value adjustment screw; Described correcting bracket parts are when described spring axle swings, and described spring pivot pin can be inconsistent with described correcting value regulator plate.
4. negative correction device as claimed in claim 1 or 2, it is characterized in that, the upper end of described correcting bracket parts is provided with a swing arm sleeve, in described swing arm sleeve, axle is provided with a pitman arm shaft, described swing arm lower end is articulated with one end of described pitman arm shaft, and the upper end thereof of described rocking arm is in the other end of described pitman arm shaft.
5. negative correction device as claimed in claim 1 or 2, is characterized in that, the other end of described shift fork is provided with waist shaped hole; Described lever shaft inserts in described waist shaped hole.
6. negative correction device as claimed in claim 1 or 2, it is characterized in that, described fork support member comprises one end by supporting lever axle sleeve and the support lever of support lever supporting on governor cover, the other end of described support lever is provided with one in order to support the declutch shift shaft of shift fork, and the neutral position axle of described shift fork is located on described declutch shift shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181502.XA CN102705084B (en) | 2012-06-04 | 2012-06-04 | Negative correction device for high-pressure fuel injection pump speed governor of fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181502.XA CN102705084B (en) | 2012-06-04 | 2012-06-04 | Negative correction device for high-pressure fuel injection pump speed governor of fuel injection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705084A CN102705084A (en) | 2012-10-03 |
| CN102705084B true CN102705084B (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210181502.XA Active CN102705084B (en) | 2012-06-04 | 2012-06-04 | Negative correction device for high-pressure fuel injection pump speed governor of fuel injection system |
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| CN (1) | CN102705084B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089448B (en) * | 2016-08-16 | 2022-05-31 | 无锡威孚高科技集团股份有限公司 | Negative correction mechanism for high-pressure oil pump speed regulator of forklift diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067303A (en) * | 1974-12-19 | 1978-01-10 | Diesel Kiki Co., Ltd. | Fuel injection pump governor |
| CN2793346Y (en) * | 2005-06-01 | 2006-07-05 | 天津内燃机研究所 | Operating mechanism of speed-adjuster of oil-jetting pump |
| CN201106491Y (en) * | 2007-09-14 | 2008-08-27 | 江西汇尔油泵油嘴有限公司 | Negative correction and supercharging compensator apparatus of fuel injection pump speed regulator |
| CN101349198A (en) * | 2008-08-11 | 2009-01-21 | 无锡开普动力有限公司 | Stabilizing device of diesel engine oil jetting pump speed regulating machine |
| CN202611881U (en) * | 2012-06-04 | 2012-12-19 | 南岳电控(衡阳)工业技术有限公司 | Negative correcting device for high-pressure fuel injection pump governor of fuel injection system |
-
2012
- 2012-06-04 CN CN201210181502.XA patent/CN102705084B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4067303A (en) * | 1974-12-19 | 1978-01-10 | Diesel Kiki Co., Ltd. | Fuel injection pump governor |
| CN2793346Y (en) * | 2005-06-01 | 2006-07-05 | 天津内燃机研究所 | Operating mechanism of speed-adjuster of oil-jetting pump |
| CN201106491Y (en) * | 2007-09-14 | 2008-08-27 | 江西汇尔油泵油嘴有限公司 | Negative correction and supercharging compensator apparatus of fuel injection pump speed regulator |
| CN101349198A (en) * | 2008-08-11 | 2009-01-21 | 无锡开普动力有限公司 | Stabilizing device of diesel engine oil jetting pump speed regulating machine |
| CN202611881U (en) * | 2012-06-04 | 2012-12-19 | 南岳电控(衡阳)工业技术有限公司 | Negative correcting device for high-pressure fuel injection pump governor of fuel injection system |
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| Publication number | Publication date |
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| CN102705084A (en) | 2012-10-03 |
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Address after: 421007 Hunan province Hengyang City Baishazhou Yanfeng District No. 10 mailbox Patentee after: The electronic (Hengyang) industrial technology Limited by Share Ltd Address before: 421007 Hunan province Hengyang City Baishazhou Yanfeng District No. 10 mailbox Patentee before: Nanyue Electronic Control (Hengyang) Industry Technology Co., Ltd. |