CN202659397U

CN202659397U - Disturbance nozzle oil sprayer

Info

Publication number: CN202659397U
Application number: CN 201220328403
Authority: CN
Inventors: 傅琳; 靖海国
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2013-01-09
Anticipated expiration: 2022-07-09

Abstract

The utility model discloses a disturbance nozzle oil sprayer which is characterized in that at least three main spray holes are arrayed in a needle valve body, more than four even number of auxiliary spray holes are formed in the main spray holes, the auxiliary spray holes are communicated with the main spray holes and are forked at the same positions in the main spray holes to form left half groups and right half groups, and the left half groups and the right half groups are distributed on the left and right sides with the main spray holes as the centerlines; the conical surfaces of the conical oil mists ejected by the two adjacent auxiliary spray holes of the left half group and the right half group between the two adjacent main spray holes are mutually tangent, the conical surfaces of the conical oil mists ejected by the auxiliary spray holes corresponding to the left half groups and the right half groups arranged on the two sides of the adjacent main spray holes one by one are mutually tangent in sequence, and the cross sectional areas of the main spray holes re smaller than the sum of the cross sectional areas of the auxiliary spray holes; and the fuel oil is ejected by the auxiliary spray holes after generating strong vortex at the forked sites of the auxiliary spray holes due to the change of movement direction, and the conical cylindrical oil mists are respectively mutually tangent to form strong disturbance in different directions, so that the atomization strength of the fuel oil is reinforced.

Description

Disturbance spout oil sprayer

Technical field

The utility model relates to a kind of in-cylinder direct injection fuel injection device for I. C. Engine, and particularly a kind of disturbance spout oil sprayer sprays for fuel oil disturbance after realizing eddy current.

Background technique

Progress along with science and technology, the birth of internal-combustion engine has driven the flourish of society, present internal-combustion engine recoverable amount enormous amount but also in swift and violent increase, when offering convenience to the mankind, also aggravated environmental pollution and energy shortage, the discharging and the raising fuel utilization ratio that therefore reduce internal-combustion engine seem particularly important.The fogging degree of fuel of internal combustion engine has larger impact to Economy and the discharging of motor, the method that improves atomizing intensity mainly contains and improves jet pressure and organize two kinds of methods of fuel oil eddy current, the high-pressure common rail technology of diesel engine can make jet pressure to 2000bar at present, but the again raising of fuel pressure is subject to the restriction of material and machining accuracy, organizing the fuel oil eddy current is a kind of method with broad prospects for development, this organizes the fuel oil eddy-current technique still to be at present the stage early stage of development, await technological innovation, improve the energy-saving and emission-reduction of atomizing intensity.

Summary of the invention

The utility model is in order to improve the atomizing intensity of injected fuel, and the utility model provides a kind of disturbance spout oil sprayer, by the sub-spray orifice of out of phase is set, can realize that multi-angle is sprayed behind the fuel oil eddy current.

The technical solution adopted in the utility model is: a kind of disturbance spout oil sprayer, comprise needle-valve and needle-valve body, it is characterized in that along its center line one all uniform array at least three main jet holes being arranged in the needle-valve body, corresponding each main jet hole is provided with four above even numbers spray orifice at needle-valve body, sub-spray orifice and main jet hole UNICOM, and same position bifurcated in the main jet hole, sub-spray orifice on each main jet hole is equally divided into left half group and right half group, and left half group and right half group distributes about take the main jet centerline hole as center line; Half group on a left side between the adjacent two main jet holes is tangent with the conical surface of the taper mist of oil of right half group of adjacent two sub-spray orifices ejection, the conical surface of the taper mist of oil of sub-spray orifice ejection is tangent respectively successively one to one to half group on the left side of arranged on both sides and right half group by adjacent sub-spray orifice, and main jet hole cross-section area is less than sub-spout cross-section area sum.

Half group on a described left side or right half group of interior two adjacent sub-orifice center line are not at grade.

Described each main jet hole upper left half group and right sub-spray orifice in half group are divergent shape and arrange centered by bifurcation site in the main jet hole.

Sub-spray orifice bifurcation site is provided with the vortex space in the described main jet hole, and cross section, vortex space is greater than sub-spray orifice cross section sum, a side and main jet hole UNICOM, opposite side and sub-spray orifice UNICOM.

The utility model arranges some sub-spray orifices at the main jet bore end, fuel oil is sprayed by sub-spray orifice behind the stronger eddy current of change generation of sub-spray orifice crotch owing to moving direction, strengthen fuel-oil atmozation intensity, the cone tubular mist of oil of sub-spray orifice ejection is tangent and mistake in twos respectively, the stronger disturbance of the different formation of direction, further strengthen the atomizing intensity of fuel oil, be conducive to air-fuel mixture; This is simple in structure, and is easy to implement, and atomizing intensity is higher, and air-fuel mixture is more even, and it is more abundant to burn, and is conducive to energy-saving and emission-reduction, and economic benefit and social benefit are obvious, and the market space is huge to be suitable for large scale application.

Description of drawings

Fig. 1 looks the visible perspective structure schematic representation of hidden line on the utility model embodiment;

Fig. 2 is the visible perspective structure schematic representation of the utility model embodiment side-looking hidden line.

Number in the figure title: 1 needle-valve; 2 needle-valve bodies; 3 main jet holes; 4 sub-spray orifices.

Embodiment

The utility model embodiment such as Fig. 1, shown in Figure 2, this disturbance spout oil sprayer, comprise needle-valve 1 and needle-valve body 2, it is characterized in that needle-valve body 2 is interior has at least five main jet holes 3 along its center line one all uniform array, corresponding each main jet hole 3 is provided with four sub-spray orifices 4 at needle-valve body 2, sub-spray orifice 4 and main jet hole 3 UNICOMs, and the 3 interior same position bifurcateds in the main jet hole, 4 two one group of sub-spray orifice on each main jet hole 3 is equally divided into left half group and right half group, left half group and right half group distributes as about center line take main jet hole 3 center lines, sub-spray orifice 4 in left half group and right half group is arranged to be divergent shape centered by the 3 interior bifurcation site of main jet hole, main jet hole 3 cross-section areas are less than sub-spout cross-section area sum, and 3 interior flow velocitys are higher than sub-spout 4 interior flow velocitys to fuel oil in the main jet hole; Half group on a left side between the adjacent two main jet holes 3 is tangent with the conical surface of the taper mist of oil of right half group of adjacent two sub-spray orifices 4 ejection, and the conical surface of the in addition taper mist of oil of two sub-spray orifices 4 ejections of adjacent sub-spray orifice 4 both sides is tangent equally; During work, by sub-spout 4 ejections, fuel oil changes at crotch change direction flow velocity and produces stronger eddy current high pressure fuel after main jet hole 3 arrives sub-spray orifice 4 bifurcation site at a high speed, and the fuel-oil atmozation intensity after the ejection is larger; The cone tubular mist of oil of the sub-spray orifices 4 in half group two on the left side that adjacent main jet hole is 3 and right half group two sub-spray orifices 4 ejections is tangent and mistake in twos respectively, and direction is different to form stronger disturbance, thereby further strengthens the atomizing intensity of fuel oil, and being conducive to oil gas fully mixes; This is simple in structure, and is easy to implement, and atomizing intensity is higher, and air-fuel mixture is more even, and it is more abundant to burn, and is conducive to energy-saving and emission-reduction, and economic benefit and social benefit are obvious, and the market space is huge to be suitable for large scale application.

Can also the vortex space be set sub-spray orifice bifurcation site in the main jet hole when the utility model is implemented, cross section, vortex space is greater than sub-spray orifice cross section sum, a side and main jet hole UNICOM, and opposite side and sub-spray orifice UNICOM are used for adding maelstrom and the intensity that atomizes; Half group on a left side or right half group two sub-orifice center lines can also be separately positioned on two planes that certain angle arranged, be used for enlarging jet space.

Claims

1. disturbance spout oil sprayer, comprise needle-valve (1) and needle-valve body (2), it is characterized in that along its center line one all uniform array at least three main jet holes (3) being arranged in the needle-valve body (2), corresponding each main jet hole (3) is provided with four above even numbers spray orifice (4) at needle-valve body (2), sub-spray orifice (4) and main jet hole (3) UNICOM, and same position bifurcated in main jet hole (3), sub-spray orifice (4) on each main jet hole (3) is equally divided into left half group and right half group, and left half group and right half group distributes as about center line take main jet hole (3) center line; Half group on a left side between the adjacent two main jet holes (3) is tangent with the conical surface of the taper mist of oil of right half group of adjacent two sub-spray orifices (4) ejection, tangent respectively successively to the conical surface of the taper mist of oil of half group on the left side of arranged on both sides and right half group of one to one sub-spray orifice (4) ejection by adjacent sub-spray orifice (4), main jet hole (3) cross-section area is less than sub-spout cross-section area sum.

2. disturbance spout oil sprayer according to claim 1 is characterized in that half group on a described left side or right half group of interior adjacent two sub-spray orifices (4) center line not at grade.

3. disturbance spout oil sprayer according to claim 1 is characterized in that sub-spray orifice (4) in upper left half group and right half group of described each main jet hole (3) is divergent shape and arranges centered by bifurcation site in main jet hole (3).

4. according to claim 1 to 3 arbitrary described disturbance spout oil sprayers, it is characterized in that sub-spray orifice (4) bifurcation site is provided with the vortex space in the described main jet hole (3), cross section, vortex space is greater than sub-spray orifice (4) cross section sum, one side and main jet hole (3) UNICOM, opposite side and sub-spray orifice (4) UNICOM.