CN205089513U - Common rail fuel injection nozzle idol piece of little sealed diameter - Google Patents
Common rail fuel injection nozzle idol piece of little sealed diameter Download PDFInfo
- Publication number
- CN205089513U CN205089513U CN201520912576.5U CN201520912576U CN205089513U CN 205089513 U CN205089513 U CN 205089513U CN 201520912576 U CN201520912576 U CN 201520912576U CN 205089513 U CN205089513 U CN 205089513U
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- Prior art keywords
- needle
- valve
- pressure chamber
- sealed
- valve body
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- Expired - Fee Related
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Abstract
The utility model provides a common rail fuel injection nozzle idol piece of little sealed diameter, including the nozzle valve needle valve interior with locating nozzle valve, be equipped with flourishing oil groove in the nozzle valve, nozzle valve's upper end is equipped with the oil feed passageway of the flourishing oil groove of intercommunication, the nozzle valve bottom is equipped with the seal receptacle face of slope, the bottom of needle valve is equipped with the needle valve conical surface, the lower part branch of the needle valve conical surface is equipped with personally submits the sealed loop -line of sealed complex with the seal receptacle, be equipped with the pressure chamber between sealed loop -line and the nozzle valve bottom, nozzle valve's bottom be equipped with with the communicating nozzle opening of pressure chamber. The utility model discloses because the diameter of sealed loop -line reduces for sealing line moves down, just makes the volume of pressure chamber very reduce, is favorable to the emission standard of diesel engine up to standard more. The pressure chamber volume reduces besides, has avoided avoiding under high temperature high pressure condition during remaining fuel persists the pressure chamber, and fuel sprayer head and orifice department form the carbon deposit, have prolonged life greatly.
Description
Technical field
The utility model relates to P type series Oil-Spray Match Parts, and the co-rail oil injection particularly relating to a kind of little sealed diameter chews couple.
Background technique
At present, oil injection coupling is the vitals of diesel fuel system, and it is made up of needle-valve and needle-valve body.The oil-fired system of diesel engine realize automatically controlled before, complete air inlet, compression, work done, for a fuel oil in the cyclic process of exhaust four stroke, and achieves automatically controlled at the diesel fuel system of state 3 and above emission standard, in an On The Cycle Working Process of diesel engine, fuel feeding number of times reaches 4 ~ 5 times, and special pre-spray, idling operation are not fuel feeding under full lift situation, is easy to because needle-valve opening speed is slow, dam and cause for shortage of oil in seat surface place.Face of needle seating on current needle-valve and the sealed seat surface sealing contact surface on needle-valve body are comparatively large, and still can meet at declared working condition, and at pre-spray, idling operation fuel delivery then differs greatly, it has had a strong impact on the performance of diesel engine.
Model utility content
The utility model will solve above-mentioned prior art Problems existing, the Oil-Spray Match Parts of the little sealed diameter (Φ 1.80mm-Φ 1.90mm) providing a kind of sealed diameter to be less than traditional standard size, supplies the defect of shortage of oil when solving the middle and slow speed of revolution such as idling.
The utility model solves the technological scheme that its technical problem adopts: the co-rail oil injection of this little sealed diameter chews couple, comprise needle-valve body and be located at the needle-valve in needle-valve body, oil holding slot is provided with in needle-valve body, the upper end of needle-valve body is provided with the oil inlet passage being communicated with oil holding slot, the sealed seat surface of inclination is provided with bottom needle-valve body, the bottom of needle-valve is provided with face of needle seating, the lower part of face of needle seating is provided with sealed seat surface in the sealing loop wire be sealed and matched, be provided with pressure chamber between sealing bottom loop wire and needle-valve body, the bottom of needle-valve body is provided with the nozzle opening communicated with pressure chamber.
In order to perfect further, the diameter of sealing loop wire is Φ 1.80mm-Φ 1.90mm.
Perfect further, the part that needle-valve is positioned at oil holding slot is provided with about one group compensating groove spaced apart.
Perfect further, nozzle opening has several to be also evenly distributed on the bottom of needle-valve body in interval.
This structure at P type series Oil-Spray Match Parts basis reformed AHP, Applicable scope various types of vehicles, engineering machinery, generator set etc.Be provided with sealing cone bottom needle-valve body, seal band just at conical surface place, then is exactly down pressure chamber, and pressure chamber's sidewall is provided with the nozzle opening that quantity does not wait.Needle valve bottom end is the conical surface, and ring packing line is located at conical surface place, and it and needle-valve body inner conical surface altogether, just form a complete seal band.The advantage of such design improvement: needle-valve sealed diameter reduces, increase needle-valve upwards hydraulic coupling, needle-valve opening speed accelerates, under identical lift, sealing loop wire conical surface place flow resistance, in the trend reduced, namely reduces damming of fuel sealing line place, particularly starts the low operating mode of locomotive, under the state that needle lift is not opened completely, effect is obvious especially.Through test at pre-spray, during idling, fuel injection quantity can increase by 18%, and declared working condition is substantially constant or increment is very little.
The effect that the utility model is useful is: the utility model is owing to sealing the diameter reduction of loop wire, and potted line is moved down, and just make the volume of pressure chamber greatly reduce, the emission standard advantageously in diesel engine is up to standard.Pressure chamber's volume reduces besides, avoids residual fuel oil and retains in pressure chamber, avoid under high-temperature and high-pressure conditions, and oil nozzle head and spray orifice form carbon distribution, substantially prolongs working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged diagram of part A in Fig. 1.
Description of reference numerals: needle-valve body 1, needle-valve 2, oil holding slot 3, oil inlet passage 4, sealed seat surface 5, face of needle seating 6, sealing loop wire 7, pressure chamber 8, nozzle opening 9, compensating groove 10.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing: the co-rail oil injection of the medium and small sealed diameter of the present embodiment chews couple, the needle-valve 2 comprising needle-valve body 1 and be located in needle-valve body 1, oil holding slot 3 is provided with in needle-valve body 1, the upper end of needle-valve body 1 is provided with the oil inlet passage 4 being communicated with oil holding slot 3, the sealed seat surface 5 of inclination is provided with bottom needle-valve body 1, the bottom of needle-valve 2 is provided with face of needle seating 6, the lower part of face of needle seating 6 is provided with sealed seat surface 5 in the sealing loop wire 7 be sealed and matched, be provided with pressure chamber 8 between sealing bottom loop wire 7 and needle-valve body 1, the bottom of needle-valve body 1 is provided with the nozzle opening 9 communicated with pressure chamber 8.The diameter of sealing loop wire 7 is Φ 1.80mm-Φ 1.90mm.
The part that wherein needle-valve 2 is positioned at oil holding slot 3 is provided with about one group compensating groove 10 spaced apart.Nozzle opening 9 has several to be also evenly distributed on the bottom of needle-valve body 1 in interval.
Although the utility model has illustrated by reference to preferred embodiment and has described, those skilled in the art should understand, and in the scope of claims, can do the various change in form and details.
Claims (4)
1. the co-rail oil injection of a little sealed diameter chews couple, comprise needle-valve body (1) and be located at the needle-valve (2) in needle-valve body (1), oil holding slot (3) is provided with in needle-valve body (1), the upper end of needle-valve body (1) is provided with the oil inlet passage (4) being communicated with oil holding slot (3), it is characterized in that: described needle-valve body (1) bottom is provided with the sealed seat surface (5) of inclination, the bottom of needle-valve (2) is provided with face of needle seating (6), the lower part of face of needle seating (6) is provided with sealed seat surface (5) in the sealing loop wire (7) be sealed and matched, pressure chamber (8) is provided with between sealing loop wire (7) and needle-valve body (1) bottom, the bottom of needle-valve body (1) is provided with the nozzle opening (9) communicated with pressure chamber (8).
2. the co-rail oil injection of little sealed diameter according to claim 1 chews couple, it is characterized in that: the diameter of described sealing loop wire (7) is Φ 1.80mm-Φ 1.90mm.
3. the co-rail oil injection of little sealed diameter according to claim 1 chews couple, it is characterized in that: the part that described needle-valve (2) is positioned at oil holding slot (3) is provided with about one group compensating groove (10) spaced apart.
4. the co-rail oil injection of little sealed diameter according to claim 1 chews couple, it is characterized in that: described nozzle opening (9) has several to be also evenly distributed on the bottom of needle-valve body (1) in interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912576.5U CN205089513U (en) | 2015-11-16 | 2015-11-16 | Common rail fuel injection nozzle idol piece of little sealed diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912576.5U CN205089513U (en) | 2015-11-16 | 2015-11-16 | Common rail fuel injection nozzle idol piece of little sealed diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089513U true CN205089513U (en) | 2016-03-16 |
Family
ID=55480206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520912576.5U Expired - Fee Related CN205089513U (en) | 2015-11-16 | 2015-11-16 | Common rail fuel injection nozzle idol piece of little sealed diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089513U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626049A (en) * | 2018-05-03 | 2018-10-09 | 哈尔滨工程大学 | The double oil pocket pintle nozzle match-ing parts of low speed machine |
| RU190852U1 (en) * | 2019-03-29 | 2019-07-15 | Евгений Викторович Горбачевский | Diesel Injector Sprayer |
| RU190851U1 (en) * | 2019-03-29 | 2019-07-15 | Евгений Викторович Горбачевский | Electro-Hydraulic Spray Nozzle |
-
2015
- 2015-11-16 CN CN201520912576.5U patent/CN205089513U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626049A (en) * | 2018-05-03 | 2018-10-09 | 哈尔滨工程大学 | The double oil pocket pintle nozzle match-ing parts of low speed machine |
| RU190852U1 (en) * | 2019-03-29 | 2019-07-15 | Евгений Викторович Горбачевский | Diesel Injector Sprayer |
| RU190851U1 (en) * | 2019-03-29 | 2019-07-15 | Евгений Викторович Горбачевский | Electro-Hydraulic Spray Nozzle |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20171116 |