CN201546860U - Oil-way detection connecting device of diesel high-pressure common-rail oil injector - Google Patents
Oil-way detection connecting device of diesel high-pressure common-rail oil injector Download PDFInfo
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- CN201546860U CN201546860U CN2009202510198U CN200920251019U CN201546860U CN 201546860 U CN201546860 U CN 201546860U CN 2009202510198 U CN2009202510198 U CN 2009202510198U CN 200920251019 U CN200920251019 U CN 200920251019U CN 201546860 U CN201546860 U CN 201546860U
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- tapered sleeve
- joint
- hole
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Abstract
The utility model discloses an oil-way detection connection device of a diesel high-pressure common-rail oil injector, in particular to a connecting device for detecting a BOSCH oil injector matched in a similar Yuchai (YC) 6J-30 engine. The oil-way detection connection device comprises a connecting sleeve which is internally provided with a step surface; a first radial hole and a second radial hole are communicated with the connecting sleeve; the first radial hole is internally provided with an oil supply joint component, and the second radial hole is internally provided with an oil return port joint; the oil supply connector component comprises a conical sleeve and a conical sleeve pressing connector; an axial hole inserting and connecting structure is adopted radially between the conical sleeve and the conical sleeve pressing connector; the axial upper end surfaces are tightly contacted; one end of the conical sleeve pressing connector is connected with the second radial hole by threads, and the other end thereof is provided with an inner conical hole and an outer thread; and thread connection is adopted between the second radial hole and the oil return port joint. In the oil-way detection connection device, main wear parts can be replaced independently, and most parts can adopt standard parts; and the oil-way detection connection device has low requirement for processing accuracy, simple assembly and disassembly and operation, good sealing property and no leakage and can bear the pressure of 160MPa.
Description
Technical field
The utility model relates to a kind of oil sprayer detection coupling, the coupling of the external oil circuit of particularly a kind of oil sprayer.
Background technique
Along with adding of China's automobile emission regulation is tight, the application of high-pressure common rail oil-fired system in diesel engine will be more extensive, the most normal appearance of failure condition of oil sprayer and Injection Pump in the diesel common rail system, when oil sprayer needs repairing, at first oil sprayer is removed from motor, and then be installed to and detect maintenance on the test stand, oil sprayer needs to be connected reliably with test stand in the installation process, at present, being connected between the high pressure oil import of some oil sprayer and the high-pressure oil pipe is to adopt conical surface contact to be threaded, insert the high pressure oil provide to the oil sprayer with this linkage structure except that motor and realize than being easier to, common employing will directly be connected with the high-pressure oil pipe that the connection part of this oil sprayer mates and get final product; But in some oil sprayer, the high pressure oil import and the Placement between the high-pressure oil pipe of oil sprayer are comparatively special, for example: supporting BOSCH oil sprayer in the common Yuchai YC6J-30 motor on the market, this oil sprayer high pressure oil ingress does not have screw thread, oil sprayer high pressure oil inlet is by a taper hole form that is arranged on the oil injector body, this taper hole bottom is the high-pressure oil duct for leading to oil sprayer inside both, usually utilize the supporting spindle parts of original system to connect for oil sprayer with this structure high pressure oil inlet, that is: by taper hole centering location on the spindle conical surface and the oil sprayer, but the once mounting success rate is not high in the installation process, and can not guarantee to have between the taper hole on the spindle conical surface and the oil sprayer and compress sealing reliably, spindle being is repeatedly is being installed and used its conical surface serious wear of back, occur the leakage of high pressure fuel easily, and cost is higher; In addition, because the sealing to the oil return annular groove is comparatively difficult outside motor, therefore, also difficult to the collection of oil return.
The model utility content
At being similar to existing technical problem in outer high pressure oil supply of diesel oil high pressure common rail injector machine supporting in the YC6J-30 motor of Yuchai and the oil return circuit connection in the prior art, the utility model provides a kind of detection oil circuit connection set of diesel oil high pressure common rail injector, adopt the utility model connection set to connect oil sprayer and high-pressure oil pipe, the high pressure oil of pressure stability can be inserted oil sprayer, and the return opening joint that connects with the oil injector body annular groove in the utilized device is collected oil return easily.
In order to solve the problems of the technologies described above, the technological scheme that the detection oil circuit connection set of the utility model diesel oil high pressure common rail injector is achieved is: this connection set comprises connecting sleeve, be provided with step surface in the described connecting sleeve, be provided with first radial hole and second radial hole with described connecting sleeve connects, be provided with the fuel-intake connection parts in described first radial hole, be provided with the return opening joint in described second radial hole; Described fuel-intake connection parts comprise tapered sleeve and tapered sleeve pressed joint, and the axis hole plug in structure is upwards adopted in the footpath between described tapered sleeve and the described tapered sleeve pressed joint, and the upper axial end face closely contacts; One end of described tapered sleeve pressed joint is threaded with second radial hole, and its other end is provided with internal taper hole and outside thread; Adopt between described second radial hole and the described return opening joint and be threaded.
The detection oil circuit connection set of the utility model diesel oil high pressure common rail injector, wherein, the angle between described first radial hole and described second radial hole is 100 degree.Be provided with copper backing between described tapered sleeve and the described tapered sleeve pressed joint.Described return opening joint interior edge face is provided with seal washer.
Compared with prior art, the beneficial effects of the utility model are:
Because supporting diesel oil high pressure common rail injector is that BOSCH (Bosch) company produces in the YC6J-30 motor of Yuchai, its high pressure oil supply structure is comparatively special, do not adopt and be threaded, be cone structure centering and the location that utilizes recessed oil injector body, in the annular groove of oil sprayer return opening design on oil injector body.When installing on motor, a kind of conical surface spindle formula structure is adopted in fuel delivery, and the spindle front end conical surface is provided with the high pressure oilhole, and the spindle conical surface and the oil sprayer conical surface compress, and high pressure fuel carries out oil spout, and oil return enters the oil injector body annular groove after the oil duct in the cylinder cap refluxes.It is more that the machines of above-mentioned oil sprayer connects the problem of existence outward, such as: the centering location of the spindle conical surface and oil sprayer taper hole is difficulty, and the once mounting success rate is not high; Spindle is repeatedly installed the rear cone serious wear, and the high pressure fuel leakage phenomenon takes place; Compressing of the spindle conical surface and oil sprayer is difficult for realizing; Spindle belongs to BOSCH oil-fired system matching parts, and cost is higher; The sealing of oil return annular groove is unreliable, and difficulty is collected in oil return.The utility model connection set has special-purpose return opening joint and split type fuel-intake connection parts in conjunction with the needs design that the outer oil sprayer of machine detects, and it is simple and reasonable for structure, is convenient to loading and unloading, once mounting success rate height; Can bear the pressure of 160MPa after the installation, the repetition dismounting does not influence bears the pressure effect, and main vulnerable part can independently be changed, and, each component requirement on machining accuracy is low, but assembles back reliability height, can adapt to the detection needs of oil sprayer production, maintenance company.
Description of drawings
Fig. 1 is installed on vertical profile schematic representation on the oil sprayer with the utility model connection set;
Fig. 2 is the cross-sectional schematic representation of connection set shown in Figure 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done to describe in further detail.
The utility model main parts size and specification specified: 1. oil sprayer, 2. tapered sleeve pressed joint, 3. copper backing, 4. tapered sleeve, 5. connecting sleeve, 51. step surfaces, 6. fuel-intake connection parts, 7. return opening joint, 8. O-ring seal.
As shown in Figure 1, the detection oil circuit connection set of the utility model diesel oil high pressure common rail injector comprises connecting sleeve 5, be provided with step surface 51 in the described connecting sleeve 5, as shown in Figure 2, be provided with first radial hole and second radial hole with described connecting sleeve 5 connects, as shown in Figure 2, the angle between described first radial hole and described second radial hole is 100 degree.Be provided with fuel-intake connection parts 6 in described first radial hole, be provided with return opening joint 7 in described second radial hole; Described fuel-intake connection parts 6 as shown in Figure 1, comprise tapered sleeve 4 and tapered sleeve pressed joint 2, in order to reduce cost, described vertebra cover pressed joint 2 can adopt standard piece, the cone match of taper hole on the male cone (strobilus masculinus) of described tapered sleeve 4 and the oil sprayer 1, adopt the axis hole plug in structure diametrically between described tapered sleeve 4 and the described tapered sleeve pressed joint 2, both rely on end face closely to contact in the axial direction and locate, because described fuel-intake connection parts are adopted as the branch body structure, in order further to guarantee the sealing of these fuel-intake connection parts, between described tapered sleeve 4 and described tapered sleeve pressed joint 2 contacted end faces, preferably be provided with rubber-like copper backing 3; One end of described tapered sleeve pressed joint 2 adopts with second radial hole and is threaded, and its other end is provided with the internal taper hole and the outside thread that is connected usefulness that is used for external high-pressure oil pipe cooperation; Adopt between described second radial hole and the described return opening joint 7 and be threaded, in order to save cost, this return opening joint 7 can adopt standard piece, in order to guarantee the sealing at return opening place, as shown in Figure 2, be preferably in return opening joint 7 and be provided with seal washer 8 with the interior edge face that oil sprayer oil return annular groove contacts, sealing packing ring 8 adopts rubber washer, and this rubber washer is a standard piece.
The process that the utility model connection set is installed on the oil sprayer is: earlier oil sprayer 1 is inserted in the connecting sleeve 5, and with the interior step surface of connecting sleeve 5 with the oil sprayer axially locating; Again with in the tapered sleeve 4 of fuel-intake connection parts 6, first radial hole that copper backing 3 is put into connecting sleeve 5, the conical surface of tapered sleeve 4 and the taper hole on the oil sprayer 1 are aligned, compress this tapered sleeve 4 with tapered sleeve pressed joint 2 again, at this moment, the conical surface automatic centering of the conical surface of tapered sleeve 4 and oil sprayer 1, along with screwing of tapered sleeve pressed joint 2, under the pressure effect that screws screw thread, with 6 sealings of fuel-intake connection parts, in addition, owing between the contact end face of tapered sleeve pressed joint 2 and tapered sleeve 4, be provided with the sealing that relative softer copper backing 3 more can guarantee split type fuel-intake connection parts 6.As shown in Figure 2, O-ring seal 8 is put in second radial hole on the oil sprayer 1, in return opening joint 7 precession connecting sleeves 1, and held out against.At last, tapered sleeve pressed joint 2 is connected with external high-pressure oil pipe, return opening joint 7 is connected with external return tube, so far, the utility model connection set is installed.
After utilizing the utility model connection set that oil sprayer and the external oil circuit of detection are connected, its fuel feeding working procedure is: high pressure oil enters tapered sleeve pressed joint 2 from high-pressure oil pipe, the tapered sleeve of using by fuel feeding 4 enters into oil sprayer 1, thereby provides high pressure fuel for oil sprayer.The oil return process of oil sprayer 1 is: after high pressure oil moves in oil sprayer, its redundance becomes low pressure oil, this low pressure oil flows into external return tube through the O-ring seal 8 and the return opening joint 7 of the oil return annular groove on the oil sprayer, this back oil ring notch successively, thereby has realized the collection to oil return.
Although in conjunction with figure the utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the present utility model.
Claims (4)
1. the detection oil circuit connection set of a diesel oil high pressure common rail injector, comprise connecting sleeve, it is characterized in that, be provided with step surface in the described connecting sleeve, be provided with first radial hole and second radial hole with described connecting sleeve connects, be provided with the fuel-intake connection parts in described first radial hole, be provided with the return opening joint in described second radial hole; Described fuel-intake connection parts comprise tapered sleeve and tapered sleeve pressed joint, and the axis hole plug in structure is upwards adopted in the footpath between described tapered sleeve and the described tapered sleeve pressed joint, and the upper axial end face closely contacts; One end of described tapered sleeve pressed joint is threaded with second radial hole, and its other end is provided with internal taper hole and outside thread; Adopt between described second radial hole and the described return opening joint and be threaded.
2. the detection oil circuit connection set of diesel oil high pressure common rail injector according to claim 1 is characterized in that, the angle between described first radial hole and described second radial hole is 100 degree.
3. the detection oil circuit connection set of diesel oil high pressure common rail injector according to claim 1 is characterized in that, is provided with copper backing between described tapered sleeve and the described tapered sleeve pressed joint.
4. the detection oil circuit connection set of diesel oil high pressure common rail injector according to claim 1 is characterized in that, described return opening joint interior edge face is provided with seal washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202510198U CN201546860U (en) | 2009-11-27 | 2009-11-27 | Oil-way detection connecting device of diesel high-pressure common-rail oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202510198U CN201546860U (en) | 2009-11-27 | 2009-11-27 | Oil-way detection connecting device of diesel high-pressure common-rail oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546860U true CN201546860U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202510198U Expired - Fee Related CN201546860U (en) | 2009-11-27 | 2009-11-27 | Oil-way detection connecting device of diesel high-pressure common-rail oil injector |
Country Status (1)
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|---|---|
| CN (1) | CN201546860U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877995A (en) * | 2012-10-12 | 2013-01-16 | 福建省莆田市中涵机动力有限公司 | Combined common-rail oil atomizer body |
| CN104454275A (en) * | 2014-12-22 | 2015-03-25 | 常州博瑞油泵油嘴有限公司 | Synchronous oil supply and hold-down device for detecting high-pressure common-rail oil sprayer online and application method thereof |
| CN109356760A (en) * | 2018-12-13 | 2019-02-19 | 黑龙江省农业机械维修研究所 | Piezo-electric crystal fuel injector tests chucking device |
| CN111765026A (en) * | 2020-06-24 | 2020-10-13 | 河南柴油机重工有限责任公司 | Test device and test method for detecting oil injection rule of high-pressure common rail system |
| GB2584716A (en) * | 2019-06-13 | 2020-12-16 | Delphi Tech Ip Ltd | Injector diagnostic tools |
| CN112523911A (en) * | 2021-01-14 | 2021-03-19 | 河南柴油机重工有限责任公司 | High-reliability oil injector oil return connection adjusting structure |
-
2009
- 2009-11-27 CN CN2009202510198U patent/CN201546860U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877995A (en) * | 2012-10-12 | 2013-01-16 | 福建省莆田市中涵机动力有限公司 | Combined common-rail oil atomizer body |
| CN104454275A (en) * | 2014-12-22 | 2015-03-25 | 常州博瑞油泵油嘴有限公司 | Synchronous oil supply and hold-down device for detecting high-pressure common-rail oil sprayer online and application method thereof |
| CN104454275B (en) * | 2014-12-22 | 2019-08-02 | 常州博瑞油泵油嘴有限公司 | A kind of synchronous fuel feeding of high pressure common rail injector on-line checking and pressing device and its application method |
| CN109356760A (en) * | 2018-12-13 | 2019-02-19 | 黑龙江省农业机械维修研究所 | Piezo-electric crystal fuel injector tests chucking device |
| CN109356760B (en) * | 2018-12-13 | 2023-09-05 | 黑龙江省农业机械维修研究所 | Test clamping device for piezoelectric crystal fuel injector |
| GB2584716A (en) * | 2019-06-13 | 2020-12-16 | Delphi Tech Ip Ltd | Injector diagnostic tools |
| GB2584716B (en) * | 2019-06-13 | 2022-03-02 | Delphi Tech Ip Ltd | Injector diagnostic tools |
| CN111765026A (en) * | 2020-06-24 | 2020-10-13 | 河南柴油机重工有限责任公司 | Test device and test method for detecting oil injection rule of high-pressure common rail system |
| CN112523911A (en) * | 2021-01-14 | 2021-03-19 | 河南柴油机重工有限责任公司 | High-reliability oil injector oil return connection adjusting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20131127 |