CN2528948Y - Singel plunger-type injection pump and diesel engine installed with the injection pump - Google Patents
Singel plunger-type injection pump and diesel engine installed with the injection pump Download PDFInfo
- Publication number
- CN2528948Y CN2528948Y CN 02208650 CN02208650U CN2528948Y CN 2528948 Y CN2528948 Y CN 2528948Y CN 02208650 CN02208650 CN 02208650 CN 02208650 U CN02208650 U CN 02208650U CN 2528948 Y CN2528948 Y CN 2528948Y
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- China
- Prior art keywords
- pump housing
- plunger
- finger
- torsion spring
- ratch
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Abstract
The utility model discloses a single plunger-typed fuel injection pump and a diesel engine equipped with the fuel injection pump. The pump body is provided with an oil outlet valve matching parts and a plunger piston matching parts, a plunger piston of the plunger piston matching parts is driven by a tappet body component with rolling wheel and conducts periodic reciprocating movement in a plunger piston sleeve of the plunger piston matching parts, a regulating sleeve is arranged out of the plunger piston sleeve and can conduct rotation relative to the plunger piston sleeve, the regulating sleeve is provided with a gear ring, the gear ring is engaged with a rack bar arranged in a slide channel on one side of the pump body, one side of the rack bar is provided with a taper extending outward, a flexible device is arranged between the taper and the pump body and the flexible device gives voltage bias on the taper, therefore, sudden increasing of delivery capacity of the fuel pump and black smoke in discharge can be avoided.
Description
Technical field:
The utility model relates to a kind of monomer jerk fuel injection pump, more specifically says, relates to the monomer jerk fuel injection pump that the diesel engine fuel oil supply system is used, and the diesel engine of this Injection Pump is installed.
Background technique:
The monomer jerk fuel injection pump utilizes the camshaft actuated of diesel engine, and to the oil sprayer supply pressure oil of fuel oil supply system, plunger is rotated by ratch-gear ring type controlling mechanism or pull bar-fork type controlling mechanism, changes effective travel, the size of control fuel injection quantity.Existing various types of diesel engines, in startup or the speed regulation process, because ratch or shift fork do not have damping mechanism, plunger stroke increases suddenly, excessive oil spout can not fully be burnt, and produces dense black smoke in diesel exhaust gas, not only befouling environment, waste fuel oil, and cause the outlet valve carbon distribution, bring the degradation adverse effect of exerting oneself down.CN2320810Y China utility model patent specification discloses the adjustable smoke evacuation fuel economizer of a kind of use for diesel engine, outside the gear chamber of diesel engine, said smoke evacuation fuel economizer is set, by leaning the pull bar on ratch and the effect of damping spring, the speed that the control plunger stroke increases is to solve the above-mentioned technical problem that prior art exists.During installation, need unload the high pressure oil pump inspection cover of gear chamber cover, after this smoke evacuation fuel economizer is installed, to pull out pull bar earlier, after starting diesel engine, pull bar is sent back in the groove of opening adjustment screw mandrel outer end, adjust screw mandrel more inwards or outwards, till the required idling of diesel engine, adjust more loaded down with trivial details.In addition, CN2410432Y China utility model patent specification, a kind of internal combustion (IC) engine oil-jetting pump control rack elasticity locker is disclosed, it has a locker body, by screw rod, interior spring abutment, interior spring, adjustment nut, the locker body is sleeved on the oil pump ratch, screw rod and oil pump ratch are screwed into one, need be on the ratch of typing oil pump processing screw hole, its structure is complicated, processes and assemble cumbersome.
The model utility content:
The utility model is intended to overcome the deficiency of above-mentioned prior art, provide a kind of at monomer jerk fuel injection pump controlling mechanism the ratch finger and the pump housing between the novel Injection Pump of damping device directly is set, and the diesel engine that this Injection Pump is installed, its structure is simple than prior art.
According to monomer jerk fuel injection pump of the present utility model, comprise a pump housing, be provided with an oil inlet passage and an oil discharge passage in the pump housing, the filler opening of oil inlet passage can be communicated with inlet connector, be provided with a delivery valve matching parts in the oil discharge passage, also be provided with a plunger coupled parts in the pump housing, its filler opening is communicated with the oil inlet passage fluid, its oil outlet is communicated with the delivery valve matching parts fluid, the plunger of plunger coupled parts is driven by the tappet body component of a band roller, in the plunger bushing of plunger coupled parts, do periodically to-and-fro motion, plunger bushing is provided with an adjustment sleeve that can rotate to it outward, and adjustment sleeve is provided with a gear ring, this gear ring and the ratch engagement that is arranged in the pump housing one sideslip road, ratch one side is provided with outward extending finger, is provided with one between the described finger and the described pump housing and executes the elastic device of bias voltage to described finger.
The diesel engine that provides according to the utility model, the monomer jerk fuel injection pump of its fuel oil supply system, comprise a pump housing, be provided with an oil inlet passage and an oil discharge passage in the pump housing, the filler opening of oil inlet passage can be communicated with inlet connector, be provided with a delivery valve matching parts in the oil discharge passage, also be provided with a plunger coupled parts in the pump housing, its filler opening is communicated with the oil inlet passage fluid, its oil outlet is communicated with the delivery valve matching parts fluid, the plunger of plunger coupled parts is driven by the tappet body component of a band roller, does periodically to-and-fro motion in the plunger bushing of plunger coupled parts, and plunger bushing is provided with an adjustment sleeve that can rotate to it outward, adjustment sleeve is provided with a gear ring, this gear ring meshes with a ratch that is arranged in the pump housing the one sideslip road in, and ratch one side is provided with outward extending finger, is provided with one between the described finger and the described pump housing and executes the elastic device of bias voltage to described finger.
According to jerk fuel injection pump of the present utility model and the diesel engine that this Injection Pump is installed, execute the elastic device of bias voltage owing between the described finger and the described pump housing, be provided with one to described finger, only need on the pump housing of existing like product, a small amount of member to be set, just can prevent effectively that plunger stroke from increasing suddenly, solve in the exhaust and produce black smoke, cause the pollution of environment and the technical problem of waste fuel oil.Its structure is simple than prior art, can finish processing, assembling and adjustment in Injection Pump manufactory, to satisfy the demand of all types of user, helps the standardization and the seriation of product, guarantees the product quality and performances index.
Description of drawings:
Fig. 1 is the monomer jerk fuel injection pump structural representation of prior art;
Fig. 2 is the scheme of installation of monomer jerk fuel injection pump of the present utility model and diesel engine speed regulation mechanism;
Fig. 3 is a kind of preferred embodiment of monomer jerk fuel injection pump of the present utility model;
Fig. 4 is that the A of Fig. 3 is to partial view;
Fig. 5 is the another kind of embodiment of monomer jerk fuel injection pump of the present utility model;
Fig. 6 is the partial sectional view along B-B section among Fig. 4;
Fig. 7 is another embodiment of monomer jerk fuel injection pump of the present utility model;
Embodiment:
Referring to Fig. 1, wherein provide a kind of typical structure of monomer jerk fuel injection pump of prior art, it has a pump housing 1, be provided with an oil inlet passage 2 and an oil discharge passage 3 in the pump housing 1, the filler opening of oil inlet passage 2 can be communicated with the inlet connector shown in the figure, be provided with a delivery valve matching parts 4 in the oil discharge passage, also be provided with a plunger coupled parts 5 in the pump housing, its filler opening is communicated with oil inlet passage 2 fluids, its oil outlet is communicated with delivery valve matching parts 4 fluids, the plunger 51 of plunger coupled parts 5 is driven by the tappet body component 6 of a band roller 61, in the plunger bushing 52 of plunger coupled parts 5, do periodically to-and-fro motion, the plunger bushing 52 outer adjustment sleeves that can rotate to it 7 that are provided with, adjustment sleeve 7 tops are provided with a gear ring 71, the bottom is provided with two vertical guide grooves 72, the flange 511 that is arranged on plunger 51 lower ends is embedded in two vertical guide grooves 72, and can slide along guide groove 72, described gear ring 71 and a ratch 8 engagements that are arranged in the pump housing one sideslip road 11, ratch 8 one sides are formed with outward extending finger 81, when ratch 8 under diesel engine speed regulation mechanism drives, when slideway 11 moves, rotate simultaneously with the gear ring 71 of its engagement, thereby drive adjustment sleeve 7 and plunger 51 rotations, the effective travel of plunger, that is the oil spout pump delivery, change thereupon, realize starting or the speed governing purpose.Its further CONSTRUCTED SPECIFICATION, since irrelevant with the utility model, repeat no more herein.
Referring to Fig. 2, the scheme of installation of monomer jerk fuel injection pump of the present utility model shown in it and diesel engine speed regulation mechanism 10 (representing with double dot dash line among the figure), shift fork 101 as the actuator of diesel engine speed regulation mechanism 10, can be around a rotating center, clockwise or inhour rotation (double-head arrow W in as figure in certain angular range
1Shown in), thus drive finger 81 on the ratch 8 along slideway 11 to-and-fro motion (as double-head arrow W among the figure
2Shown in), when the finger on the ratch 8 81 is driven when for example moving from right to left by shift fork 101, with the gear ring 71 of ratch 8 engagement rotate simultaneously (referring to Fig. 1), thereby drive adjustment sleeve 7 and plunger 51 rotations, the effective travel of plunger 51 and oil spout pump delivery increase thereupon, realize the purpose that starts or quicken.The significant difference of the utility model and prior art is between the finger 81 and the pump housing 1 of ratch 8, is provided with one and stops finger 81 to the elastic device of executing bias voltage 9 that increases the motion of oil pump capacity direction.
Referring to Fig. 3 and 4, wherein provide a kind of preferred embodiment of monomer jerk fuel injection pump of the present utility model, wherein execute the elastic device of bias voltage, always represent with code name 9, comprise a pressing plate 91, it can rotate around a rotating shaft 92 that is fixed on the pump housing 1, and has a working surface 911 that can contact with the finger 81 on the ratch 8, one torsion spring 93 is nested with in this rotating shaft 92, one end of torsion spring 93 is formed with a crotch 931 (referring to Fig. 4), it is hooked in the breach 912 that is formed on the pressing plate 91, the other end of torsion spring 93 is formed with an arc crotch 932, it is hooked on the bearing pin 94 that is fixed on the pump housing 1, also be formed with the rectangular block 913 that limits its rotation on the pressing plate 91, stirred by finger 81, when going to the limit position (shown in double dot dash line among the figure) corresponding to the oil pump maximum pump discharge when pressing plate 91, a side of this rectangular block 914 contacts with bearing pin 94, the slewing area of restriction pressing plate 91.The design of torsion spring 93 and pressing plate 91 should guarantee to make pressing plate 91 to produce the trend that clockwise rotates, and before guaranteeing pump start, the working surface 911 of pressing plate 91 can contact the outer surface of finger 81.
Referring to Fig. 2 and 3, to start operating mode is example, the working procedure of monomer jerk fuel injection pump of the present utility model is described: under operator's manipulation, the shift fork 101 of diesel engine speed regulation mechanism 10 rotates around inhour, the finger 81 that drives on the ratch 8 moves from right to left along slideway 11, rotate simultaneously with the gear ring 71 of ratch 8 engagements, drive adjustment sleeve 7 and plunger 51 rotations, the effective travel of plunger 51 and oil spout pump delivery increase thereupon.Under the effect of the torsion spring 93 in the above-mentioned elastic device 9 of executing bias voltage, the active force of pressing plate 91 on finger 81 is along the component of slideway 11 directions, has the trend that stops ratch 8 to move from right to left, the movement velocity of ratch 8 can not increased suddenly, gear ring 71 with ratch 8 engagements, that is the rotational velocity of adjustment sleeve 7 is restricted, and guarantees that the effective travel and the oil spout pump delivery of plunger 51 can not increase suddenly.According to the diesel engine different load, can select the stiffness coefficient of suitable torsion spring 93 by test, just the displacement variation of Injection Pump can be controlled in the suitable scope, can be after startup, occur insufficient because of burning, the problem of over-emitting black exhaust in exhaust.
Referring to Fig. 5 and 6, the another kind of embodiment of monomer jerk fuel injection pump of the present utility model shown in it, wherein execute the elastic device 9 of bias voltage, comprise a torsion spring 93 that is nested with on a pivot pin 95 that is fixed on the pump housing 1, one end 931 of torsion spring 93 inserts in the aperture 951 that is arranged on this pivot pin 95 (referring to Fig. 6), the other end of the torsion spring 93 arc elbow 932 that is shaped, it is hooked in (not shown) in the annular groove that is arranged on appropriate location on the finger 81.Compare with last embodiment, the structure of product can further be simplified.
Referring to Fig. 7, a kind of embodiment's in back replacement pattern, be adopt a slice spring 93 ', its end insert a groove 951 of the pivot pin 95 that is fixed on the pump housing 1 ' interior ' in, the other end be shaped an arc elbow 932 ', it is pressed against on the outer surface of finger 81 appropriate locations.
The those of ordinary skill in relevant field needs only the diesel engine that monomer jerk fuel injection pump of the present utility model is applied to have jerk fuel injection pump fuel oil supply system in upright arrangement, the performance of diesel engine is improved, and need not transform the remaining part of diesel engine.
The foregoing description is only for the usefulness that the utility model is described; and be not to be to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technological schemes that are equal to also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (8)
1, a kind of monomer jerk fuel injection pump, comprise a pump housing, be provided with an oil inlet passage and an oil discharge passage in the pump housing, the filler opening of oil inlet passage can be communicated with inlet connector, be provided with a delivery valve matching parts in the oil discharge passage, also be provided with a plunger coupled parts in the pump housing, its filler opening is communicated with the oil inlet passage fluid, its oil outlet is communicated with the delivery valve matching parts fluid, the plunger of plunger coupled parts is driven by the tappet body component of a band roller, in the plunger bushing of plunger coupled parts, do periodically to-and-fro motion, plunger bushing is provided with an adjustment sleeve that can rotate to it outward, and adjustment sleeve is provided with a gear ring, this gear ring and the ratch engagement that is arranged in the pump housing one sideslip road, ratch one side is provided with outward extending finger, it is characterized in that: be provided with one between the described finger and the described pump housing and execute the elastic device of bias voltage to described finger.
2, jerk fuel injection pump according to claim 1, it is characterized in that: described elastic device comprises a pressing plate, pressing plate can rotate around a rotating shaft that is fixed on the pump housing, and has a working surface that can contact with the ratch finger, one torsion spring is nested with in this rotating shaft, one end of torsion spring is fixed on the pressing plate, and the other end of torsion spring links to each other with a bearing pin on being fixed on the pump housing, also is formed with the block that limits its rotation on the pressing plate.
3, jerk fuel injection pump according to claim 1 is characterized in that: described elastic device comprises a torsion spring that is nested with on a pivot pin that is fixed on the pump housing, and an end of torsion spring is connected with this pivot pin, and the other end of torsion spring is connected with the ratch finger.
4, jerk fuel injection pump according to claim 1 is characterized in that: described elastic device comprises a slice spring, and its end is fixed on the pivot pin that is arranged on the pump housing, and the other end is pressed against on the outer surface of finger appropriate location.
5, a kind of diesel engine, the monomer jerk fuel injection pump of its fuel oil supply system comprises a pump housing, be provided with an oil inlet passage and an oil discharge passage in the pump housing, the filler opening of oil inlet passage can be communicated with inlet connector, be provided with a delivery valve matching parts in the oil discharge passage, also be provided with a plunger coupled parts in the pump housing, its filler opening is communicated with the oil inlet passage fluid, its oil outlet is communicated with the delivery valve matching parts fluid, the plunger of plunger coupled parts is driven by the tappet body component of a band roller, in the plunger bushing of plunger coupled parts, do periodically to-and-fro motion, plunger bushing is provided with an adjustment sleeve that can rotate to it outward, and adjustment sleeve is provided with a gear ring, this gear ring and the ratch engagement that is arranged in the pump housing one sideslip road, ratch one side is provided with outward extending finger, it is characterized in that: be provided with one between the described finger and the described pump housing and execute the elastic device of bias voltage to described finger.
6, diesel engine according to claim 5, it is characterized in that: described elastic device comprises a pressing plate, pressing plate can rotate around a rotating shaft that is fixed on the pump housing, and has a working surface that can contact with the ratch finger, one torsion spring is nested with in this rotating shaft, one end of torsion spring is fixed on the pressing plate, and the other end of torsion spring links to each other with a bearing pin on being fixed on the pump housing, also is formed with the block that limits its rotation on the pressing plate.
7, diesel engine according to claim 5 is characterized in that: described elastic device comprises a torsion spring that is nested with on a pivot pin that is fixed on the pump housing, and an end of torsion spring is connected with this pivot pin, and the other end of torsion spring is connected with the ratch finger.
8, diesel engine according to claim 5 is characterized in that: described elastic device comprises a slice spring, and its end is fixed on the pivot pin that is arranged on the pump housing, and the other end is pressed against on the outer surface of finger appropriate location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208650 CN2528948Y (en) | 2002-04-08 | 2002-04-08 | Singel plunger-type injection pump and diesel engine installed with the injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208650 CN2528948Y (en) | 2002-04-08 | 2002-04-08 | Singel plunger-type injection pump and diesel engine installed with the injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2528948Y true CN2528948Y (en) | 2003-01-01 |
Family
ID=33689276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208650 Expired - Fee Related CN2528948Y (en) | 2002-04-08 | 2002-04-08 | Singel plunger-type injection pump and diesel engine installed with the injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2528948Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209713A (en) * | 2018-11-14 | 2019-01-15 | 上海华羿汽车系统集成有限公司 | A kind of plunger device and internal combustion engine |
| CN109209710A (en) * | 2018-11-14 | 2019-01-15 | 上海华羿汽车系统集成有限公司 | A kind of plunger fuel injector and internal combustion engine |
-
2002
- 2002-04-08 CN CN 02208650 patent/CN2528948Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209713A (en) * | 2018-11-14 | 2019-01-15 | 上海华羿汽车系统集成有限公司 | A kind of plunger device and internal combustion engine |
| CN109209710A (en) * | 2018-11-14 | 2019-01-15 | 上海华羿汽车系统集成有限公司 | A kind of plunger fuel injector and internal combustion engine |
| CN109209713B (en) * | 2018-11-14 | 2024-03-19 | 上海华羿汽车系统集成有限公司 | Plunger device and internal combustion engine |
| CN109209710B (en) * | 2018-11-14 | 2024-05-28 | 上海华羿汽车系统集成有限公司 | Plunger oil sprayer and internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGFA INDUSTRY GROUP CO., LTD., JANGSU Free format text: FORMER OWNER: JIANGSU CHANGFA GROUP Effective date: 20070105 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070105 Address after: 213176 Chang FA Industrial Park, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee after: Changfa Industrial Group Co., Ltd., Jiangsu Prov. Address before: 213022 New District Road, hi tech Development Zone, Jiangsu, Changzhou Patentee before: Jiangsu Changfu Group |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030101 Termination date: 20110408 |