CN87202952U - Oil pump for internal combustion engine - Google Patents
Oil pump for internal combustion engine Download PDFInfo
- Publication number
- CN87202952U CN87202952U CN 87202952 CN87202952U CN87202952U CN 87202952 U CN87202952 U CN 87202952U CN 87202952 CN87202952 CN 87202952 CN 87202952 U CN87202952 U CN 87202952U CN 87202952 U CN87202952 U CN 87202952U
- Authority
- CN
- China
- Prior art keywords
- pump housing
- spring
- tappet body
- plunger
- lower seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model relates to a fuel injection pump for internal combustion engines, in particular to a totally enclosed fuel injection pump using an integral pump body. The utility model is characterized in that the lower seat of a spring is provided with a flat hole used for the axial positioning of a plunger and a convex tongue used for the positioning of the lower seat of the spring and a tappet body. A positioning screw on the pump body is also used as a hole to assemble and disassemble a screw. The fuel injection pump does not need special disassembling tools when plunger matching parts are replaced, a cam shaft does not need to be disassembled, and the utility model has the advantages of simple structure and convenient maintenance.
Description
The utility model relates to internal combustion (IC) engine oil-jetting pump, particularly relates to a kind of diesel engine jerk fuel injection pump.
In the existing internal combustion (IC) engine oil-jetting pump, particularly in the totally enclosed type Injection Pump that adopts the integrated type pump housing, the pump that has adopts ratch, tooth shell type oil amount regulating mechanism, P7 pump (austrian patent AT256555 as Austrian FM company, AT291679), tappet body component, piston spring and spring seat, plunger and regulating tooth cover etc. are all packed into from pump housing upper end, need special-purpose dismantling device when changing piston spring, spring seat and tappet body component.Tappet body opening diameter on this oil jet pump body is identical with the hole of dress plunger flange cover.The pump that has adopts not toothed control sleeve, permitted P type pump (" MTZ " 1980 the 1st phase 23 pages) the integrated type pump housing lower ending opening of company (Robert Bosch GmbH) as West Germany's ripple, use covering palte seal, tappet body component, piston spring and spring seat, plunger and control sleeve etc. are all packed into from pump housing lower end, must dismantle camshaft when changing plunger coupled parts.Existing internal combustion (IC) engine oil-jetting pump can only move up and down in order to make the tappet body, can not rotate, and makes an elongated guiding groove usually on the external circle of tappet, and adorn a positioning screwn in the screw of the pump housing, and the positioning screwn front end is inserted in the elongated guiding groove.The screw that also has another mounting or dismounting cartridge screw to use simultaneously on the pump housing, in assembly process, the cylinder head of dismounting screw promptly passes this elongated guiding groove the tappet body component is held up, so that the mounting or dismounting camshaft parts.After the assembling dismounting screw is taken off, and the dismounting screw hole is blocked with plug screw.
The purpose of this utility model provides the whole jerk fuel injection pump of a kind of improved internal-combustion engine, the spring seat of honour, piston spring, spring lower seat and tappet body are packed into from the pump housing lower end during assembling, and plunger coupled parts and control sleeve are packed into from pump housing upper end, do not need special-purpose dismantling device when changing plunger coupled parts, needn't dismantle camshaft yet.
Technological points of the present utility model is: jerk fuel injection pump adopts the integrated type pump housing of bottom opening, and pump housing bottom surface covering palte seal, the spring seat of honour, piston spring, spring lower seat and tappet body component all can be packed into from the opening of pump housing bottom.Plunger and control sleeve etc. are packed into from pump housing upper end.Control sleeve can adopt tooth cover or not toothed control sleeve, a confession flat hole of plunger lower end flat-square shaped of packing into is arranged on the spring lower seat, and a protruding tongue is arranged, and there is a flat-square shaped plunger lower end.Pack into the elongated slot of the protruding tongue of spring lower seat of a confession is arranged on the external circle of tappet, spring lower seat can not be rotated after assembling.In addition, also have another to be used for the elongated guiding groove of positioning screwn on the external circle of tappet.Spring lower seat available metal cutting working method is made, and also can adopt precision stamping spare or powder metallurgy process manufacturing.During the assembling plunger, the flat-square shaped with the plunger lower end inserts in the flat hole of spring lower seat earlier.Then plunger is rotated an angle, take a turn for the better 90 ° most, plunger just is stuck in the groove between spring lower seat and the tappet body.The axial fit up gap of plunger is by the relevant axial dimension control of plunger, three parts of spring lower seat and tappet body.The screw of dress tappet body positioning screwn is used as the screw of mounting or dismounting cartridge screw again when assembling on the fuel injection pump housing.
The advantage that the utility model is compared with prior art had is: jerk fuel injection pump adopts the totally enclosed integrated type pump housing, pump housing bottom opening, and the spring seat of honour, piston spring, spring lower seat and tappet body are packed into by the bottom, and mounting or dismounting are convenient.Change the easily damaged parts of Injection Pump, during plunger coupled parts, do not need special tool, can change by single wheel cylinder.During the dismounting camshaft parts, Injection Pump also needn't all disintegrate.Pump housing bottom opening, anufacturability is good, helps organizing a large amount of productions, is convenient to guarantee accuracy of manufacturing, can reduce manufacture cost.Tappet body opening diameter on the pump housing can be bigger than plunger flange trepanning, can adopt the bigger tappet body of diameter, helps strengthening roller widths, reduce the contact stress of roller cam pair, perhaps under the condition that keeps identical stress level, strengthen the diameter of plunger, enlarge the ability to work of Injection Pump.Employing is rotated the structure that an angle realizes the location behind the flat hole with the flat-square shaped insertion spring lower seat of plunger lower end protrusion, reliable operation, and anufacturability is good.Simultaneously, owing to adopted the protruding tongue of spring lower seat and the position structure that the elongated slot on the external circle of tappet cooperates, make spring lower seat can be arranged in tappet body inside, so under the situation that does not strengthen the Injection Pump total height, can strengthen the guiding length of tappet body, can prevent the tappet body because of guiding curtailment double swerve, thereby can reduce the wearing and tearing of part, prolong the working life of Injection Pump.In addition and since on the pump housing screw of dress tappet body positioning screwn when assembling again as mounting or dismounting cartridge screw usefulness, so can reduce by a screw on the pump housing, and can save the plug screw that the dismounting screw hole is blocked.
Below in conjunction with description of drawings a kind of embodiment of the present utility model.
Fig. 1 is the sectional elevation of Injection Pump.
Fig. 2 is the Injection Pump sectional elevation in the assembly process.
Fig. 3 is the oblique drawing of spring lower seat.
Fig. 4 is the longitudinal section of spring lower seat and plunger and tappet body component.
Fig. 5 represents that the elongated slot shape A of the following protruding tongue of shock mount on the external circle of tappet is to view.
In-line fuel injection pump embodiment among Fig. 1 comprises the pump housing (2), cover plate (19), camshaft parts (1), tappet body component (3), a secondary or how secondary plunger coupled parts (7), and the oil amount regulating mechanism of being made up of ratch (9), fuel-flow control tooth cover (8).Part among Fig. 1 (4) is a spring lower seat, and part (5) is a piston spring.The front end of tappet body positioning screwn (10) is inserted in the elongated guiding groove of tappet body, and part (11) is a plunger flange cover.
In Fig. 2 and Fig. 3, pack into the flat hole (14) of plunger (12) lower end flat-square shaped (16) (see figure 4) of a confession is arranged on the spring lower seat (4).There is a protruding tongue (15) side of spring lower seat (4).Spring lower seat adopts precision stamping spare.
In Fig. 4 and Fig. 5, there is the flat-square shaped (16) of a protrusion plunger (12) lower end, and flat-square shaped (16) inserts the back, flat hole (14) of spring lower seat changes 90 ° of angles, and the axial position of plunger has just been determined.An elongated slot (18) is arranged on the cylindrical of tappet body (17), and the protruding tongue (15) of spring lower seat is contained in this elongated slot, and spring lower seat can not be rotated.
During the assembling Injection Pump, the spring seat of honour (6), piston spring (5), spring lower seat (4) and tappet body component (3) are packed into from the bottom of the pump housing (2) successively, overcome piston spring power then and push the tappet body component inwards and load onto dismounting screw (13), make the cylindrical head of dismounting screw pass elongated guiding groove (Fig. 2) on the external circle of tappet.When unclamping the power of pushing tappet body component, the cylindrical head of dismounting screw holds up the tappet body, is fixed on the rigging position.At this moment just camshaft parts can be packed in the pump housing.At last, take off dismounting screw (13), in same screw, load onto positioning screwn (10) again.Undertaken by the order opposite during the dismounting Injection Pump with said procedure.
Claims (3)
1, a kind of whole internal-combustion engine jerk fuel injection pump, comprising the pump housing, pump housing bottom surface cover plate, camshaft parts, the tappet body component, piston spring, spring lower seat, the spring seat of honour, secondary or a how secondary plunger coupled parts and an oil amount regulating mechanism, camshaft parts is contained in pump housing bottom, the tappet body is contained in the pump housing of cam top, plunger coupled parts is contained in the pump housing of tappet body top, and the plunger lower end contacts with the tappet body component, and the roller in the tappet body component contacts with cam, thereby plunger is passed in the motion of cam, it is characterized in that: described piston spring, the spring seat of honour, spring lower seat and tappet body component are from the opening of pump housing bottom is packed the pump housing of cam top into, and plunger coupled parts and the control sleeve pump housing of packing into from the aperture of pump housing top has a flat hole on the described spring lower seat, there is a protruding tongue side, this protruding tongue is contained in the elongated slot on the external circle of tappet, and there is a flat-square shaped described plunger lower end, and this flat-square shaped is packed in the flat hole of described spring lower seat.
2, Injection Pump according to claim 1 is characterized in that spring lower seat adopts precision stamping spare.
3, Injection Pump according to claim 1 is characterized in that the screw of dress tappet body positioning screwn on the pump housing is used as the screw of mounting or dismounting cartridge screw again when assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202952 CN87202952U (en) | 1987-03-06 | 1987-03-06 | Oil pump for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87202952 CN87202952U (en) | 1987-03-06 | 1987-03-06 | Oil pump for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87202952U true CN87202952U (en) | 1988-03-23 |
Family
ID=4819006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87202952 Expired - Lifetime CN87202952U (en) | 1987-03-06 | 1987-03-06 | Oil pump for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87202952U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN103206283A (en) * | 2013-01-30 | 2013-07-17 | 祥天控股（集团）有限公司 | Plunger type fuel injection pump of miniature aerodynamic engine |
| CN107002664A (en) * | 2014-12-30 | 2017-08-01 | 固瑞克明尼苏达有限公司 | Reduce the pump rod and drive link of construction with side loading |
| US11300112B2 (en) | 2020-03-31 | 2022-04-12 | Graco Minnesota Inc. | Pump drive system |
| US11512694B2 (en) | 2017-02-21 | 2022-11-29 | Graco Minnesota Inc. | Piston rod assembly for a fluid pump |
-
1987
- 1987-03-06 CN CN 87202952 patent/CN87202952U/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536568A (en) * | 2012-02-08 | 2012-07-04 | 武汉科技大学 | In-line diaphragm-type pressurizing pump for dimethyl-ether engine |
| CN103206283A (en) * | 2013-01-30 | 2013-07-17 | 祥天控股（集团）有限公司 | Plunger type fuel injection pump of miniature aerodynamic engine |
| CN103206283B (en) * | 2013-01-30 | 2015-11-25 | 祥天控股（集团）有限公司 | The jerk fuel injection pump of miniature air power engine |
| US11873809B2 (en) | 2014-12-30 | 2024-01-16 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US10502206B2 (en) | 2014-12-30 | 2019-12-10 | Graco Minnesota Inc. | Pump rod and driving link with side-load reducing configuration |
| CN107002664B (en) * | 2014-12-30 | 2020-06-19 | 固瑞克明尼苏达有限公司 | Pump rod and drive link with side load reduction features |
| US11035359B2 (en) | 2014-12-30 | 2021-06-15 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11286926B2 (en) | 2014-12-30 | 2022-03-29 | Graco Minnesota Inc. | Pump rod and driving link with side-load reducing configuration |
| US11927183B2 (en) | 2014-12-30 | 2024-03-12 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11396871B1 (en) | 2014-12-30 | 2022-07-26 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11927184B2 (en) | 2014-12-30 | 2024-03-12 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11530697B2 (en) | 2014-12-30 | 2022-12-20 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11732708B2 (en) | 2014-12-30 | 2023-08-22 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11891991B2 (en) | 2014-12-30 | 2024-02-06 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| US11873810B2 (en) | 2014-12-30 | 2024-01-16 | Graco Minnesota Inc. | Displacement pump mounting and retention |
| CN107002664A (en) * | 2014-12-30 | 2017-08-01 | 固瑞克明尼苏达有限公司 | Reduce the pump rod and drive link of construction with side loading |
| US11891992B2 (en) | 2017-02-21 | 2024-02-06 | Graco Minnesota Inc. | Piston with sleeve for fluid pump |
| US11773842B2 (en) | 2017-02-21 | 2023-10-03 | Graco Minnesota Inc. | Removable piston rod sleeve for fluid pump |
| US11512694B2 (en) | 2017-02-21 | 2022-11-29 | Graco Minnesota Inc. | Piston rod assembly for a fluid pump |
| US11300112B2 (en) | 2020-03-31 | 2022-04-12 | Graco Minnesota Inc. | Pump drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |