CN203730192U - Diesel engine oil nozzle needle valve coupling member capable of prolonging service life - Google Patents
Diesel engine oil nozzle needle valve coupling member capable of prolonging service life Download PDFInfo
- Publication number
- CN203730192U CN203730192U CN201420081930.XU CN201420081930U CN203730192U CN 203730192 U CN203730192 U CN 203730192U CN 201420081930 U CN201420081930 U CN 201420081930U CN 203730192 U CN203730192 U CN 203730192U
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- China
- Prior art keywords
- needle valve
- oil
- diesel engine
- needle
- valve body
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- Expired - Fee Related
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Abstract
The utility model discloses a diesel engine oil nozzle needle valve coupling member capable of prolonging service life. The technical scheme includes that the diesel engine oil nozzle needle valve coupling member comprises a needle valve body and a needle valve positioned in a cavity of the needle valve body, and a guide column in sliding fit with the needle valve body is arranged at the upper end of the needle valve. The diesel engine oil nozzle needle valve coupling member is characterized in that oil grooves are arranged on the guide column and distributed in a rhombic-grid-shaped manner, and an oil storage pool is arranged at an X-shaped intersection of each two oil grooves. The diesel engine oil nozzle needle valve coupling member has the advantages that due to a rhombic-grid-shaped distribution mode of the oil grooves, lateral force when the needle valve moves can be balanced, eccentric wearing can be effectively prevented, and moving stability of the needle valve can be improved; comparing the rhombic-grid-shaped distribution mode of the oil grooves with a mode of annular oil grooves, reducing of moving resistance is facilitated, and convenience is brought to cleaning of impurities in the oil grooves; by arranging the oil storage pools, much oil can be stored, the needle valve body and the needle valve moving at high speed can be cooled and lubricated better, and many impurities can be stored in the oil storage pools, so that jamming is avoided, and service life of an oil nozzle is prolonged.
Description
Technical field
The utility model relates to a kind of diesel engine part, the Fuel Injector for Diesel Engine couple that particularly can reduce wearing and tearing, force balance, increases the service life.
Background technique
Injector nozzle matching parts is the important composition parts of diesel engine fuel-firing supply system, and the quality of injector nozzle matching parts service behaviour directly affects power character, Economy and the reliability of diesel engine.Injector nozzle matching parts comprises needle-valve and needle-valve body, and needle-valve body end is provided with spray orifice, and needle-valve top is provided with the cylindrical guide surface being slidably matched with needle-valve body.When oil nozzle work, needle-valve is reciprocal high-speed motion in the chamber of needle-valve body, fuel oil is extruded to spray orifice and form vaporific oil droplet, and fuel oil can fully be burnt.The guide surface of needle-valve and the matching gap of needle-valve body are very little, and needle-valve guide surface and needle-valve body in the reciprocating process of high speed are easy to because of wear out failure, reduce the working life of pintle nozzle match-ing parts.For head it off, there is technology that annular groove or one section of spiral groove are set on guide surface, utilize trench storage part fuel oil, the needle-valve of high-speed motion is played to the effect of Cooling and Lubricator, improve the working life of oil nozzle.But the set-up mode of prior art groove has following problems: 1, annular ditch groove is vertical with axis arranges, and resistance to motion is larger, not easy to clean of the foreign material that accumulate in groove, when foreign material accumulate when more, groove place can form source of wear, the wearing and tearing of aggravation to needle-valve body; 2, spiral grooves can make needle-valve in movement process, produce unbalanced lateral force, and lateral force easily makes needle-valve or needle-valve body produce eccentric wear, causes the wearing and tearing too early of needle-valve or needle-valve body and even produces permanent damage.
Model utility content
The purpose of this utility model is the drawback for prior art, and the Fuel Injector for Diesel Engine couple increasing the service life of a kind of stress equalization, high lubricating effect is provided.
Problem described in the utility model realizes with following technical proposals:
A kind of Fuel Injector for Diesel Engine couple increasing the service life, it comprises needle-valve body and is positioned at the needle-valve of needle-valve body chamber, needle-valve upper end is provided with the directional post being slidably matched with needle-valve body, specialization is: described directional post is provided with oil groove, the oil groove distributed in grid that assumes diamond in shape, is provided with oil storage pool in the "×" shape intersection of every two oil grooves.
The above-mentioned Fuel Injector for Diesel Engine couple increasing the service life, the depth dimensions of described oil storage pool is 0.06-0.08 millimeter, the depth dimensions of described oil groove is 0.03-0.05 millimeter; Oil storage pool caliber size is greater than oil groove width dimensions.
The above-mentioned Fuel Injector for Diesel Engine couple increasing the service life, the inclination angle of described oil groove relative level direction is 20 °.
The above-mentioned Fuel Injector for Diesel Engine couple increasing the service life, described oil groove arranges three roads, and three road oil grooves are spacedly distributed.
The utility model arranges the oil groove of the symmetrical distributed in grid that assumes diamond in shape on the guide surface of injector valve, the position that crosses at oil groove arranges oil storage pool, said structure compared with prior art its advantage is: 1, oil groove rhombus net trellis distribution mode can balanced needle valve lateral force when motion, effectively prevent eccentric wear phenomenon, improve the stability of needle valve movement; 2, oil groove net distribution mode is compared annular oil groove and is conducive to reduce resistance to motion, and is convenient to clear up the impurity in oil groove; 3, arranging of oil storage pool can be stored more fluid, and the needle-valve of needle-valve body and high-speed motion is played to better Cooling and Lubricator effect, simultaneously can in oil storage tank, accumulate more impurity thing, avoids stuck phenomenon, extends oil nozzle working life.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of needle-valve;
Fig. 3 is the left view of Fig. 2.
In figure, each list of reference numerals is: 1, needle-valve, 2, directional post, 3, oil groove, 4, oil storage pool, 5, needle-valve body.
Embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises needle-valve body 5 and needle-valve 1, and needle-valve body is provided with chamber, and needle-valve is positioned at chamber, and needle-valve upper end is provided with the directional post 2 being slidably matched with needle-valve body.Needle-valve and needle-valve body are the couples of precision-fit, and the matching gap of directional post and needle-valve body is very little.For reducing the surface friction drag between needle-valve and needle-valve body surface of contact, extend the working life of injector valve couple, the utility model has carried out following improvement:
Referring to Fig. 2, Fig. 3, oil groove 3 is set on the cylndrical surface of directional post 2, the oil groove distributed in grid that assumes diamond in shape, oil groove depth dimensions is 0.03-0.05 millimeter; And be provided with oil storage pool 4 in the "×" shape intersection of every two oil grooves.Due to the symmetry properties of rhombus net trellis oil groove, make needle-valve stress balance in movement process, do not produce lateral force, therefore eliminate eccentric wear hidden danger.In oil groove, can store fluid, play lubrication and cooling effect, improve needle-valve working state.Further, be provided with oil storage pool 4 in the "×" shape intersection of every two oil grooves, the depth dimensions of oil storage pool is 0.06-0.08 millimeter.Oil storage pool is deeper than oil groove and oil storage pool bore is greater than oil groove width, can more store fluid on the one hand, improve lubrication effect, also there is on the other hand the function of holding minute impurities, combustion well cuts flows into oil storage pool with fluid, and be deposited in oil storage pool, effectively prevent that needle-valve is stuck at movement process, improve the operating life of injector valve couple.Another advantage of oil groove that rhombus net trellis distributes is to communicate between oil groove, is easy to clear up impurity.
Still, referring to Fig. 2, Fig. 3, consider the requirement that reduces resistance to motion and keep fluid two aspects, the inclination angle of oil groove 3 relative level directions is set to 20 ° (positive 20 ° or negative 20 °).Oil groove arranges three roads on directional post, and three road oil grooves are spacedly distributed, to reach the object of uniform stressed and sufficient lubrication.
Claims (4)
1. the Fuel Injector for Diesel Engine couple that can increase the service life, it comprises needle-valve body (5) and is positioned at the needle-valve (1) of needle-valve body chamber, needle-valve upper end is provided with the directional post (2) being slidably matched with needle-valve body, it is characterized in that: described directional post is provided with oil groove (3), the oil groove distributed in grid that assumes diamond in shape, is provided with oil storage pool (4) in the "×" shape intersection of every two oil grooves.
2. the Fuel Injector for Diesel Engine couple increasing the service life according to claim 1, is characterized in that, the depth dimensions of described oil storage pool (4) is 0.06-0.08 millimeter, and the depth dimensions of described oil groove (3) is 0.03-0.05 millimeter; Oil storage pool caliber size is greater than oil groove width dimensions.
3. the Fuel Injector for Diesel Engine couple increasing the service life according to claim 2, is characterized in that, the inclination angle of described oil groove relative level direction is 20 °.
4. the Fuel Injector for Diesel Engine couple increasing the service life according to claim 3, is characterized in that, described oil groove arranges three roads, and three road oil grooves are spacedly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081930.XU CN203730192U (en) | 2014-02-26 | 2014-02-26 | Diesel engine oil nozzle needle valve coupling member capable of prolonging service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081930.XU CN203730192U (en) | 2014-02-26 | 2014-02-26 | Diesel engine oil nozzle needle valve coupling member capable of prolonging service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730192U true CN203730192U (en) | 2014-07-23 |
Family
ID=51200271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420081930.XU Expired - Fee Related CN203730192U (en) | 2014-02-26 | 2014-02-26 | Diesel engine oil nozzle needle valve coupling member capable of prolonging service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065166A (en) * | 2015-08-12 | 2015-11-18 | 江苏大学 | Needle valve of diesel engine oil nozzle , needle valve coupling piece and needle valve machining method |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
-
2014
- 2014-02-26 CN CN201420081930.XU patent/CN203730192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065166A (en) * | 2015-08-12 | 2015-11-18 | 江苏大学 | Needle valve of diesel engine oil nozzle , needle valve coupling piece and needle valve machining method |
| CN105065166B (en) * | 2015-08-12 | 2018-02-23 | 江苏大学 | Needle-valve, pintle nozzle match-ing parts and the needle-valve processing method of diesel injector |
| CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
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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: 20140723 Termination date: 20150226 |
|
| EXPY | Termination of patent right or utility model |