CN2775330Y

CN2775330Y - Multiple jet hole pencil type oil sprayer capable of connecting various oil inlet tube joint

Info

Publication number: CN2775330Y
Application number: CN 200520100235
Authority: CN
Inventors: 周书田
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-26
Filing date: 2005-01-26
Publication date: 2006-04-26
Anticipated expiration: 2015-01-26

Abstract

The utility model discloses a multiple jet hole pencil type oil sprayer capable of connecting various oil inlet tube joints, which comprises an oil sprayer body which is welded with the oil inlet tube joints and is provided with an internal chamber, the oil inlet tube joints which are pressed with filtering cores, a needle valve, and a nozzle, wherein the oil sprayer body is in a slim pencil holder-shaped structure; the needle valve which is matched with the internal chamber of the oil sprayer body is in a slim rod-shaped structure; the nozzle is embedded in a front end chamber of the oil sprayer body; the back end of a guide sleeve which is arranged on a convex wall in the back chamber of the oil sprayer body is sequentially provided with a spring seat, a pressure adjusting spring, and a lift adjusting screw which is sheathed with a shim; the pressure adjusting screw which is sheathed with the lift adjusting screw is butted with the shim; the pressure adjusting screw is sheathed with a screw cap; the screw nut which is arranged on the back end of the pressure adjusting screw is sheathed with the lift adjusting screw; an embedded cover of a peripheral groove on the front end of the oil sprayer body is provided with an anti-charcoal ring. The utility model has the characteristics of novel structure, small size, favorable performance, low fuel consumption, little discharge, good reliability and long service life.

Description

Can connect the multi-orifice pencil-style fuel injectors of multiple inlet connector

Technical field

The utility model relates to oil sprayer, specifically relates to connect the multi-orifice pencil-style fuel injectors of multiple inlet connector.

Background technique

The porous type oil nozzle is the accurate device on the motor, and quality of fit is higher, and the quality of quality nozzle will directly influence normal use of motor and life-span.Existing porous type oil injector body structural design: the one, adopt short injector valve, the guiding position that makes needle-valve is near engine chamber, and needle-valve guiding position is subject to heat, the oil nozzle stuck phenomenon often occurs; Assembly has the more number of spare parts and the sealing surface of Assembly part, has reduced the sealing of assembly, and adopts higher cracking pressure, has increased the impact force of needle-valve to the oil nozzle seat surface, causes fault to increase, and reliability reduces; The 2nd, injection hole on injection nozzle quantity is few, and the aperture is big, so the atomizing of fuel oil is insufficient, is unfavorable for burning, increases oil consumption, increases the discharging of CO and HC, is difficult for reaching environment protection requirement.

The applying date is that " a kind of rotation needle-valve hole nozzle " (notification number is CN2413041Y) of the Chinese utility model patent ZL00206288.7 on March 22nd, 2000 just belongs to the oil sprayer of this class formation; It comprises plunger, plunger body, guide finger, rotary spool, valve body, oil pocket and spring, the tapering, lower end of valve body is provided with nozzle opening, spring is arranged on the plunger upper end, plunger body and valve body are located with locating stud, the convex body of plunger lower end is arranged in " bucket " shape structure of rotary spool upper end, is provided with oil duct in tapering, rotary spool lower end.It can't overcome the problems referred to above.

Summary of the invention

Technical problem to be solved in the utility model is at above-mentioned deficiency, provide that volume is little, oil consumption is low, discharging less, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector of easy for installation, long service life.

The utility model solves the problems of the technologies described above the technological scheme that is adopted:

Can connect the multi-orifice pencil-style fuel injectors of multiple inlet connector, comprise the oil injector body that welds and have inner chamber with inlet connector mutually, be pressed with the inlet connector of filter core, needle-valve, nozzle; The technical measures of taking comprise:

A. described oil injector body is elongated penholder type structure, and the needle-valve that is complementary with this oil injector body inner chamber is elongated rod shaped structure, and described nozzle is inlaid in the front end chamber of oil injector body;

B. be positioned at the lift adjusting screw that rear end of conducting sleeve on the described oil injector body back cavity convex wall is equipped with spring seat, pressure adjusting spring in proper order and is set with pad, the described pad of pressure regulating screw butt of the described lift adjusting screw of suit, described pressure regulating screw is set with nut; Be positioned at the described lift adjusting screw of nut suit of described pressure regulating screw rear end;

C. described oil injector body front end peripheral groove inner-embedded cover is equipped with anti-carbon ring.

For optimizing technique scheme, the measure of being taked also comprises:

For the guide portion distance of positions that makes needle-valve from the engine chamber better position, improved the situation of being heated at needle-valve guiding position better, stopped the oil nozzle stuck phenomenon, above-mentioned oil injector body physical dimension diameter is 9.5mm ± 0.25mm, longly is 125mm ± 2mm; The needle valve structure size diameter is 3.5mm～3.6mm, and long is 98.5mm～99.5mm.

For circulation area in making obtains maximum value, augmented flow, the tilt angle is 15 ° between the common centreline of above-mentioned nozzle spray orifice and needle-valve axis; For effectively controlling delayed injection endurance and fuel injection quantity, reduce the impact force of working procedure; Described needle-valve seat surface diameter is 2.0mm～2.1mm, and needle lift is 0.34 ± 0.03mm.

For more effectively guaranteeing the atomization quality of fuel oil, be beneficial to burning, reduce oil consumption, reduce the discharging of CO and HC, the equal radian of above-mentioned nozzle periphery is shaped on 4 spray orifices, and the spray orifice aperture is 0.25mm～0.30mm, and the injection cone angle that constitutes between spray orifice in the plane is 151 ° ± 3 °; On the described nozzle between spray orifice medial axis and nozzle medial axis angle be respectively 63.37 ° ± 2 ° in 63.37 ° ± 2 °, No. 4 holes, 84.17 ° ± 2 °, No. 3 holes, 84.17 ° ± 2 °, No. 2 holes, No. 1 hole in proper order.

For more equipped, above-mentioned oil injector body front end periphery also is inserted in packing ring, rear portion and also is with positioning plate.

For reaching the atomizing effect of better fuel oil, above-mentioned nozzle injection diameter is 0.29mm.

Compared with prior art, the utility model is that the oil injector body structural design adopts elongated penholder type by one, and adopts elongated injector valve, and the guiding position that makes needle-valve is away from engine chamber, improve the situation of being heated at needle-valve guiding position, stopped the oil nozzle stuck phenomenon; The 2nd, oil injector body adopts the minor diameter structure, is convenient to oil sprayer like this and is installed in the optimum position, firing chamber, is beneficial to burning, reduces oil consumption, reduces the discharging of CO and HC, reaches environment protection requirement.It has novel structure, volume is little, performance good, oil consumption is low, discharging less, the characteristics of good reliability and long service life.

Description of drawings

Fig. 1 is the utility model vertical profile structural representation;

Fig. 2 is a locating stud parts position vertical profile structural representation among Fig. 1;

Fig. 3 is a spray orifice distribution schematic diagram among Fig. 1;

Fig. 4 is an oil nozzle enlarged diagram among Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.The utility model is seen Fig. 1～Fig. 4.

Fig. 1 is the utility model vertical profile structural representation; As shown in Figure 1, can connect the multi-orifice pencil-style fuel injectors of multiple inlet connector, comprise the oil injector body 12 that welds and have inner chamber with inlet connector 15 mutually, can connect multiplely, also can use the oil pipe of complex angles shape as inlet connectors such as bend pipe, inclined tubes; Be pressed with the inlet connector 15 of filter core 16, needle-valve 11, nozzle 14; Oil injector body 12 is elongated penholder type structure, for the guide portion distance of positions that makes needle-valve from the engine chamber better position, improved the situation of being heated at needle-valve guiding position better, stopped the oil nozzle stuck phenomenon, oil injector body 12 physical dimension diameters are 9.5mm ± 0.25mm, and long is 125mm ± 2mm; Needle-valve 11 physical dimension diameters are 3.5mm～3.6mm, and long is 98.5mm～99.5mm; The needle-valve 11 that is complementary with these oil injector body 12 inner chambers is elongated rod shaped structure, for circulation area in making obtains maximum value, and augmented flow, the tilt angle is 15 ° between the common centreline of nozzle 14 spray orifice 14a and needle-valve 11 axis; For effectively controlling delayed injection endurance and fuel injection quantity, reduce the impact force of working procedure; Needle-valve 11 seat surface diameters are 2.0mm～2.1mm, and needle lift is 0.34 ± 0.03mm; Nozzle 14 is inlaid in the front end chamber of oil injector body 12; For more effectively guaranteeing the atomization quality of fuel oil, be beneficial to burning, reduce oil consumption, reduce the discharging of CO and HC, nozzle 14 peripheries all radian are shaped on 4 spray orifice 14a, and spray orifice 14a aperture is 0.25mm～0.30mm, for reaching the atomizing effect of better fuel oil, nozzle 14 spray orifice 14a diameters are 0.29mm; And the injection cone angle that constitutes between spray orifice in the plane is 151 ° ± 3 °; On the nozzle 14 between spray orifice 14a medial axis and nozzle 14 medial axis angle be respectively 63.37 ° ± 2 ° in 63.37 ° ± 2 °, No. 4 holes, 84.17 ° ± 2 °, No. 3 holes, 84.17 ° ± 2 °, No. 2 holes, No. 1 hole in proper order.Be positioned at the lift adjusting screw 1 that guide pin bushing 9 rear ends on the oil injector body 12 back cavity convex walls are equipped with spring seat 7, pressure adjusting spring 6 in proper order and are set with pad 5, the pressure regulating screw 4 butt pads 5 of suit lift adjusting screw 1, pressure regulating screw 4 is set with nut 3; Be positioned at the nut 2 suit lift adjusting screw 1 of pressure regulating screw 4 rear ends;

Oil injector body 12 front end peripheral groove inner-embedded covers are equipped with anti-carbon ring 13; For more equipped, oil injector body 12 front end peripheries also are inserted in packing ring 10, rear portion and also are with positioning plate 8.

The utility model assembly working principle is as follows:

The utility model assembly is used for diesel engine with direct injection, during work the high pressure fuel of diesel injection pump with compression, enter oil sprayer fuel inlet fitting oil duct through high-pressure oil pipe and enter the oil injector body high-voltage oil cavity, the final needle-valve sealing cone position that arrives, when pressure surpasses needle opening pressure, needle-valve rises fuel oil and sprays from spray orifice, needle-valve is taken a seat when the pressure in the high-pressure oil passage is lower than needle opening pressure, end of injection, Injection Pump revolution moving one changes i.e. once high-pressure oil feed, and oil sprayer is promptly finished once with the fuel feeding of Injection Pump and sprayed.

The technical measures that the processing of the utility model assembly critical piece should be taked:

1. should improve the accuracy to shape of inlet connector 15 conical surfaces, surface roughness, sealing, reliability when guaranteeing assembly installation use;

2. oil nozzle 14 spray orifice 14a are carried out numerical control machine tool processing; Divide spray orifice three process disposable processing, promptly feel relieved, boring, reaming.Pore size and angular orientation have been guaranteed; Carry out crush and grind processing after the heat treatment again, the flow and the uniformity conformity thereof of raising and stable injection hole on injection nozzle; Improve the emission performance of diesel engine, reduce engine fuel consumption;

3. oil injector body 12 materials adopt superior alloy steel, and its advantage is that cutting ability is good, and the temper resistance height can simplified processing process, can guarantee quality of product again;

4. injector valve 11 adopts and rolls the chromium Bearing Steel, and its seat surface and seat surface sealed diameter people having a common goal working procedure processing make needle-valve seat surface and seat surface sealed diameter coaxality obtain fine assurance, and spraying sealing up-to-standard rate is played a role during to assembling; Processing is carried out grinding after adopting belt pulley to drive the needle-valve rotation to seat surface;

The utility model is that the oil injector body structural design adopts elongated penholder type by one, and adopts elongated injector valve, and the situation of being heated at needle-valve guiding position has been improved away from engine chamber in the guiding position that makes needle-valve, has stopped the oil nozzle stuck phenomenon; The 2nd, oil injector body adopts the minor diameter structure, is convenient to oil sprayer like this and is installed in the optimum position, firing chamber, is beneficial to burning, reduces oil consumption, reduces the discharging of CO and HC, reaches environment protection requirement.It has novel structure, volume is little, performance good, oil consumption is low, discharging less, the characteristics of good reliability and long service life.

Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims

1, can connect the multi-orifice pencil-style fuel injectors of multiple inlet connector, comprise the oil injector body (12) that welds and have inner chamber with inlet connector (15) mutually, be pressed with the inlet connector (15) of filter core (16), needle-valve (11), nozzle (14); It is characterized in that:

A. described oil injector body (12) is elongated penholder type structure, and the needle-valve (11) that is complementary with this oil injector body (12) inner chamber is elongated rod shaped structure, and described nozzle (14) is inlaid in the front end chamber of oil injector body (12);

B. (guide pin bushing (9) rear end on the 12 back cavity convex walls is equipped with spring seat (7), pressure adjusting spring (6) in proper order and is set with the lift adjusting screw (1) of pad (5) to be positioned at described oil injector body, the described pad of pressure regulating screw (4) butt (5) of the described lift adjusting screw of suit (1), described pressure regulating screw (4) is set with nut (3); Be positioned at nut (2) the described lift adjusting screw of suit (1) of described pressure regulating screw (4) rear end;

C. described oil injector body (12) front end peripheral groove inner-embedded cover is equipped with anti-carbon ring (13).

2, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector according to claim 1 is characterized in that: described oil injector body (12) physical dimension diameter is 9.5mm ± 0.25mm, and long is 125mm ± 2mm; Needle-valve (11) physical dimension diameter is 3.5mm～3.6mm, and long is 98.5mm～99.5mm.

3, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector according to claim 1 is characterized in that: the tilt angle is 15 ° between the common centreline of described nozzle (14) spray orifice (14a) and needle-valve (11) axis; Described needle-valve (11) seat surface diameter is 2.0mm～2.1mm, and needle-valve (11) lift is 0.34 ± 0.03mm.

4, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector according to claim 2 is characterized in that: the tilt angle is 15 ° between the common centreline of described nozzle (14) spray orifice (14a) and needle-valve (11) axis; Described needle-valve (11) seat surface diameter is 2.0mm～2.1mm, and needle-valve (11) lift is 0.34 ± 0.03mm.

5, according to the described multi-orifice pencil-style fuel injectors that connects multiple inlet connector of the arbitrary claim of claim 1 to 4, it is characterized in that: described nozzle (14) periphery all radian is shaped on 4 spray orifices (14a), spray orifice (14a) aperture is 0.25mm～0.30mm, and the injection cone angle that constitutes between spray orifice in the plane is 151 ° ± 3 °; Angle is respectively 63.37 ° ± 2 ° in 63.37 ° ± 2 °, No. 4 holes, 84.17 ° ± 2 °, No. 3 holes, 84.17 ° ± 2 °, No. 2 holes, No. 1 hole in proper order between last spray orifice (14a) medial axis of described nozzle (14) and nozzle (14) medial axis.

6, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector according to claim 5 is characterized in that: described oil injector body (12) front end periphery also is inserted in packing ring (10), the rear portion also is with positioning plate (8).

7, the multi-orifice pencil-style fuel injectors that connects multiple inlet connector according to claim 5 is characterized in that: described nozzle (14) spray orifice (14a) diameter is 0.29mm.