CN201041117Y - High speed diesel oil engine fuel injection pump - Google Patents
High speed diesel oil engine fuel injection pump Download PDFInfo
- Publication number
- CN201041117Y CN201041117Y CNU2007200629979U CN200720062997U CN201041117Y CN 201041117 Y CN201041117 Y CN 201041117Y CN U2007200629979 U CNU2007200629979 U CN U2007200629979U CN 200720062997 U CN200720062997 U CN 200720062997U CN 201041117 Y CN201041117 Y CN 201041117Y
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- Prior art keywords
- plunger
- compensator
- bolt
- injection pump
- diesel engine
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Abstract
The utility model discloses a high-speed diesel pump, comprising a multi-cylinder inline arrangement injection device, a speeder and a boost compensator. The total length of the pump body L of the high-speed diesel pump is 136 mm, the cylinder centre distance L is 26 mm, the plunger diameter d is 9.5 mm and the cam lift H is 10 mm. The prier plunger diameter of the PM pump and the size of the cam lift are kept so that the stiffness of the PM injection pump is kept and the injection pressure that can bear reaches 100 MPA. The utility model is especially suitable for low emission injection pump of high speed diesel engine.
Description
Technical field
The utility model relates to a kind of diesel engine parts, particularly a kind of high-speed diesel engine Injection Pump.
Background technique
At present, existing high-speed diesel engine BQ, W Injection Pump, owing to be subjected to the restriction of structure and principle, Injection Pump pump end pressure is low, boost compensator is adjusted difficulty, can't satisfy national GB17691-1999 pattern and prove the B stage requirement of (being equivalent to No. 2 standards in Europe), be difficult to adapt to the need of work of high-speed diesel engine.Chinese patent CN2610108 discloses a kind of light vehicle diesel engine in-line fuel injection pump, and its major character is: a, plunger bushing wherein adopt integral (type) flange formula structure, and will prevent that oil deflector that cavitation pitting is used is directly installed in the oil duct on the fuel injection pump housing; B, its structural parameter cylinder core distance L=27～30mm, ratio d/L=37%～38% of plunger diameter d and cylinder core distance L, ratio H/L=37%～40% of cam lift and cylinder core distance; And roller has wherein adopted not the overall structure with roller bush, ratio B/L 〉=48.2% of roller widths B and cylinder core distance L; Plunger wherein and plunger bushing have adopted the two spill port structures of double spiral groove; The admissible pump pressure of the PM type Injection Pump that it provided reaches more than the 100Mpa (equaling 1000bar); Can reach the requirement of No. 2 Abgasgesetzs in Europe, and have simple in structure, reliable operation, easy to maintenance and advantage such as reduce cost, but its cylinder core distance L=27～30mm is excessive, on the limited space of motor, install and use and be not very desirable.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of high-speed diesel engine Injection Pump is provided, it can satisfy the condition that diesel engine is strict with Injection Pump profile installation dimension, also have higher admissible pump pressure and ability to work, can make the requirement of No. 2 Abgasgesetzs in the satisfied Europe of diesel engine, better adapt to the need of work of high-speed diesel engine.
The technical solution of the utility model is: a kind of high-speed diesel engine Injection Pump, and it comprises multi-cylinder in-line arrangement fueling injection equipment, arrangements for speed regulation and boost compensator; Multi-cylinder in-line arrangement fueling injection equipment mainly comprises the pump housing, camshaft, roller body parts, following of piston spring, piston spring, plunger control cover, the piston spring seat of honour, regulating tie bar, plunger coupled parts, flinger ring, seal ring, delivery valve matching parts, oil outlet valve spring, the oil outlet valve spring seat of honour and the tight cap of outlet valve; Described plunger coupled parts comprises plunger and plunger bushing, and plunger bushing is pressed on the pump housing by double-screw bolt and nut; Delivery valve matching parts is pressed on the plunger bushing by the tight cap of outlet valve; The flat side of plunger bottom matches with the flat side of plunger control cover, and the steel ball in the plunger control cover is stuck in the restraining groove of regulating tie bar.
Main structure parameters feature of the present utility model is: pump housing length overall L1 is 136-146mm, and cylinder core distance L is greater than or equal to 26mm and less than 27mm.
The further technological scheme of the utility model is: described roller body parts comprise roller pin, roller and roller body, and the roller working surface is a cydariform.
The utility model further technological scheme is: described arrangements for speed regulation comprise governor housing, governor cover, oiling handle, buoyant beam, limiting stopper, arm and pull bar connecting rod float; Governor housing is installed on the pump housing by bolt, limiting stopper is installed on the governor housing by bolt and can adjusts position, the left and right sides, governor housing is connected with the speed regulator cover bolt, oiling handle and buoyant beam are movably arranged on the governor cover, the handle that refuels is movably connected by rocker arm body and buoyant beam, buoyant beam is movably connected with the pull bar connecting rod again, unsteady arm is installed on the buoyant beam, on the unsteady arm adjusting screw is installed, upper-lower position before and after unsteady arm can be adjusted by adjusting screw; The pull bar connecting rod links to each other with regulating tie bar by a cross bar.
The further again technological scheme of the utility model is: boost compensator is installed on the governor housing by bolt and can adjusts position, the left and right sides, and it comprises compensation body, compensator lower body, compensator upper body, plug screw, locking nut, air input joint, adjustment screw, epithelium, spring, spring seat ratchet, drive link, lever, eccentric shaft, eccentric adjustment plate; Compensator upper body, compensator lower body and compensation body link into an integrated entity by bolt; Eccentric lever is movably arranged on the compensation body by eccentric shaft, and the one end is connected with drive link, and its other end faces unsteady arm.
The utility model has following beneficial effect owing to adopt above design than prior art:
1, the utility model compact structure can adapt to littler installing space, and diameter, the cam lift of plunger diameter, cam lift and existing P M pump plunger are measure-alike, still can keep the rigidity of original PM Injection Pump, and the injection pressure that can bear can reach 100MPa.
2, the roller working surface in the roller body parts of Injection Pump provided by the utility model has adopted cydariform (circular arc), area of contact than common column working roller is little, can improve the distribution of contact between roller and cam, more can adapt to high injection pressure, reliability improves greatly.
3, Injection Pump provided by the utility model utilizes the position of the direct regulating and controlling pull bar of pull bar connecting rod parts, fuel injection quantity with direct adjusting Injection Pump, regulate more convenient, and utilize the float front and back upper-lower position of arm of screw adjustment, more can intuitive and convenient find the torque point position that diesel engine requires (promptly certain moment of torsion rotating speed float downward the contact position of swing arm and limiting stopper) accurately.
4, Injection Pump provided by the utility model rotates by eccentric shaft lever is moved up and down, the adjustment of supercharging compensation is proofreaied and correct flexibly, acceleration performance is better, acceleration can better be controlled, can make the stable requirement that reaches No. 2 Abgasgesetzs in Europe of exhaust index of diesel engine, more can adapt to the job requirement of diesel engine.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the A-A sectional view of accompanying drawing 1;
Accompanying drawing 3 is the structural representation of the utility model boost compensator;
Accompanying drawing 4 is the cross-sectional view of the utility model roller;
Accompanying drawing 5 is the structural representation of the utility model arrangements for speed regulation and boost compensator.
Embodiment
As shown in drawings: a kind of high-speed diesel engine Injection Pump, it comprises multi-cylinder in-line arrangement fueling injection equipment, arrangements for speed regulation 3 and boost compensator 4; Multi-cylinder in-line arrangement fuel injector cartridge is equipped with four ejection cylinders, and it mainly comprises the pump housing 11, camshaft 12, roller body parts, following 14 of piston spring, piston spring 15, plunger control cover 16, the piston spring seat of honour 17, regulating tie bar 18, plunger coupled parts, flinger ring 20, seal ring 21, delivery valve matching parts 22, oil outlet valve spring 23, the oil outlet valve spring seat of honour 24 and the tight cap 25 of outlet valve; Described roller body parts comprise roller pin 131, roller 132 and roller body 133, and roller 132 working surfaces are cydariform (as shown in Figure 4); Described plunger coupled parts comprises plunger 191 and plunger bushing 192, and plunger bushing 192 is pressed on the pump housing 11 by double-screw bolt 193 and nut 194; Delivery valve matching parts 22 is pressed on the plunger bushing 192 by the tight cap 25 of outlet valve; The flat side of plunger 191 bottoms matches with plunger control cover 16 flat sides, and the steel ball in the plunger control cover 16 is stuck in the restraining groove of regulating tie bar 18.
The working principle of in-line fuel injection pump device is (as shown in Figure 2): when entering cam profile during the ascent stage, plunger 191 moves upward under the driving of camshaft 12, fuel oil in the compression plunger chamber 195, fuel pressure raises, high pressure fuel is opened delivery valve matching parts 22 backs and is sprayed into cylinder of diesel engine by high-pressure oil pipe, after the fuel oil of the quantity that meets the requirements sprays into cylinder, pressure in the high-pressure oil pipe descends, the spool of delivery valve matching parts 22 moves downward under the effect of oil outlet valve spring 23 and closes oil sprayer, end of injection.When entering the cam profile descending branch, plunger 191 moves downward under the effect of piston spring 15, by the oil duct oil suction of oil inlet and oil return hole from flinger ring 20, makes in the plunger cavity 195 to be full of fuel oil, for next oil spout is got ready.
Arrangements for speed regulation 3 comprise governor housing 31, governor cover 32, oiling handle 33, buoyant beam 34, limiting stopper 35, arm 36 and pull bar connecting rod 37 float; Governor housing 31 is installed on the pump housing 11 by bolt, limiting stopper 35 is installed on the governor housing 31 by bolt and can regulates position, the left and right sides, governor housing 31 is connected with governor cover 32 usefulness bolts, oiling handle 33 and buoyant beam 34 are movably arranged on the governor cover 32, the handle 33 that refuels is movably connected by rocker arm body and buoyant beam 34, buoyant beam 34 is movably connected with pull bar connecting rod 37 again, the arm 36 that floats is installed on the buoyant beam 34, on the unsteady arm 36 adjusting screw 38 is installed, upper-lower position before and after the arm 36 that floats can be adjusted by adjusting screw 38; Pull bar connecting rod 37 links to each other with regulating tie bar 18 by a cross bar.
The working principle of arrangements for speed regulation is (as shown in Figure 1): can make float arm 36 contacts or disengaging limiting stopper 35 by rotating oiling handle 33, make pull bar connecting rod 37 corresponding mobile and drive regulating tie bar 18 and move, can drive plunger control cover 16 and plunger 191 rotating certain angle when regulating tie bar 18 moves, thereby realize regulating the oil mass size.
The working principle of boost compensator is: diesel engine is when the work of certain low speed operating mode, and eccentric lever 52 is to contact with unsteady arm 36 in the arrangements for speed regulation.After the pressurized air of certain pressure enters damping chamber by air input joint 46, if the power on the epithelium 48 of acting on is during greater than the power of spring 49,48 of epitheliums promote drive link 51 motions, lever 52 is moved, thereby drive arm 36 corresponding the moving of floating, can make regulating tie bar 18 corresponding moving, the realization oil mass changes, further raise if enter the charge-air pressure of damping chamber, the power that acts on the epithelium 48 makes drive link 51 continue to move left, up to just stopping to move with spring 49 force balance.
Main structure parameters feature of the present utility model is: pump housing length overall L1 is 136-146mm, and cylinder core distance L is greater than or equal to 26mm and less than 27mm, plunger diameter d is 9.5-10.5mm, and cam lift H is 10-11mm.
Claims (5)
1. high-speed diesel engine Injection Pump, it comprises multi-cylinder in-line arrangement fueling injection equipment, arrangements for speed regulation and boost compensator; Multi-cylinder in-line arrangement fueling injection equipment mainly comprises the pump housing, camshaft, roller body parts, following of piston spring, piston spring, plunger control cover, the piston spring seat of honour, regulating tie bar, plunger coupled parts, flinger ring, seal ring, delivery valve matching parts, oil outlet valve spring, the oil outlet valve spring seat of honour and the tight cap of outlet valve; Plunger coupled parts comprises plunger and plunger bushing, and plunger bushing is pressed on the pump housing by double-screw bolt and nut; Delivery valve matching parts is pressed on the plunger bushing by the tight cap of outlet valve; The flat side of plunger bottom matches with the flat side of plunger control cover, and the steel ball in the plunger control cover is stuck in the restraining groove of regulating tie bar; It is characterized in that: the pump housing length overall L1 of high-speed diesel engine Injection Pump is 136-146mm, and cylinder core distance L is greater than or equal to 26mm and less than 27mm.
2. high-speed diesel engine Injection Pump according to claim 1 is characterized in that: described roller body parts comprise roller pin, roller and roller body, and the roller working surface is a cydariform.
3. high-speed diesel engine Injection Pump according to claim 1 and 2 is characterized in that: described arrangements for speed regulation comprise governor housing, governor cover, oiling handle, buoyant beam, limiting stopper, arm and pull bar connecting rod float; Governor housing is installed on the pump housing by bolt, limiting stopper is installed on the governor housing by bolt and can adjusts position, the left and right sides, governor housing is connected with the speed regulator cover bolt, oiling handle and buoyant beam are movably arranged on the governor cover, the handle that refuels is movably connected by rocker arm body and buoyant beam, buoyant beam is movably connected with the pull bar connecting rod again, unsteady arm is installed on the buoyant beam, on the unsteady arm adjusting screw is installed, upper-lower position before and after unsteady arm can be adjusted by adjusting screw; The pull bar connecting rod links to each other with regulating tie bar by a cross bar.
4. high-speed diesel engine Injection Pump according to claim 1 and 2, it is characterized in that: boost compensator is installed on the governor housing by bolt and can adjusts position, the left and right sides, and it comprises compensation body, compensator lower body, compensator upper body, plug screw, locking nut, air input joint, adjustment screw, epithelium, spring, spring seat ratchet, drive link, lever, eccentric shaft, eccentric adjustment plate; Compensator upper body, compensator lower body and compensation body link into an integrated entity by bolt; Eccentric lever is movably arranged on the compensation body by eccentric shaft, and the one end is connected with drive link, and its other end faces unsteady arm.
5. high-speed diesel engine Injection Pump according to claim 3, it is characterized in that: boost compensator is installed on the governor housing by bolt and can adjusts position, the left and right sides, and it comprises compensation body, compensator lower body, compensator upper body, plug screw, locking nut, air input joint, adjustment screw, epithelium, spring, spring seat ratchet, drive link, lever, eccentric shaft, eccentric adjustment plate; Compensator upper body, compensator lower body and compensation body link into an integrated entity by bolt; Eccentric lever is movably arranged on the compensation body by eccentric shaft, and the one end is connected with drive link, and its other end faces unsteady arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200629979U CN201041117Y (en) | 2007-04-18 | 2007-04-18 | High speed diesel oil engine fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200629979U CN201041117Y (en) | 2007-04-18 | 2007-04-18 | High speed diesel oil engine fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041117Y true CN201041117Y (en) | 2008-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200629979U Expired - Fee Related CN201041117Y (en) | 2007-04-18 | 2007-04-18 | High speed diesel oil engine fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041117Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372823A (en) * | 2018-12-29 | 2019-02-22 | 王斌 | Internal-circulation type hydraulically extensible cylinder |
| CN112502840A (en) * | 2020-12-18 | 2021-03-16 | 中船动力有限公司 | Diesel engine fuel timing hydraulic adjusting device |
-
2007
- 2007-04-18 CN CNU2007200629979U patent/CN201041117Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372823A (en) * | 2018-12-29 | 2019-02-22 | 王斌 | Internal-circulation type hydraulically extensible cylinder |
| CN109372823B (en) * | 2018-12-29 | 2020-05-05 | 王斌 | Internal circulation type hydraulic telescopic cylinder |
| CN112502840A (en) * | 2020-12-18 | 2021-03-16 | 中船动力有限公司 | Diesel engine fuel timing hydraulic adjusting device |
| CN112502840B (en) * | 2020-12-18 | 2022-09-16 | 中船动力有限公司 | Diesel engine fuel timing hydraulic adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20160418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |