Abstract:
The present invention provides an electromagnetic fuel injection valve, is capable of lowering fuel consumption and reducing emissions by promoting the mixing of injected fuel with air, and, in addition, is capable of obtaining numerous variations in spray or injection quantity, as the result of reduced emissions by promoting combustion via the atomization of injected fuel. It is a novel electromagnetic fuel injection valve, which has been designed, focusing on devising specifications for injection orifices  14, 15,  for example, the attitude or angle of inclination, shape, and number thereof, and is constituted such that jets of fuel injected from injection orifices  14, 15  are made to impinge upon one another, and are injected as a flat-shaped spray  17,  being characterized in that the angles of inclination θ of the injection orifices  14, 15  relative to the axis  5 C of a needle valve  5  are made to differ from one another.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to an electromagnetic fuel injection valve, and more particularly to an electromagnetic fuel injection valve for in-cylinder direct fuel injection in a system, which directly injects gasoline and other such fuels into a combustion chamber.  
           [0003]    2. Description of the Related Art  
           [0004]    As for the spray configuration in a conventional electromagnetic fuel injection valve for in-cylinder direct fuel injection, there is a cone shaped configuration that makes use of the swirling flow of a fuel, but this configuration is limited when it comes to enhancing fuel atomization and the state of an air/fuel mixture.  
           [0005]    Accordingly, as in Japanese Utility Model Application Laid-open No. S59-172276, Japanese Utility Model Application Laid-open No. H5-83366, Japanese Patent application Laid-open No. H8-144762, and Japanese Patent Application Laid-open No. H8-177499, for example, there are cases in which a high-pressure fuel is injected by either changing the spray shape or as a flat-shaped spray (fan spray), by causing fuel jets to impinge on one another after being injected from at least a pair of injection orifices.  
           [0006]    That is, a spray spreads out uniformly in an oval shape or flat shape, and the atomization of a fuel is achieved via the impinging of the above-mentioned high-pressure jets, and, in addition, the mixing of the air and fuel inside a combustion chamber is performed satisfactorily. Since the shape or configuration of this spray is thin and wide, the adherence of fuel to the top surface of a piston at compression, when a piston rises up inside a combustion chamber, is held in check, making it possible to prevent worsening emissions.  
           [0007]    However, the problem is that it is difficult to obtain numerous variations in spray or injection quantity via an electromagnetic fuel injection valve in accordance with spray shape or configuration, the cylinder head mounting structure, or the combustion characteristics of an internal combustion engine and so forth.  
         SUMMARY OF THE INVENTION  
         [0008]    With the foregoing problems in view, it is an object of the present invention to provide an electromagnetic fuel injection valve capable of improving the atomization of injected fuel and air/fuel mixability.  
           [0009]    Further, an object of the present invention is to provide an electromagnetic fuel injection valve, which reduces emissions by promoting combustion via the atomization of injected fuel, and, in addition, is capable of lowering fuel consumption and reducing emissions by promoting the mixing of injected fuel with air.  
           [0010]    Further, an object of the present invention is to provide an electromagnetic fuel injection valve capable of readily executing the specifications of a spray injected from an injection orifice and flow specifications, and the characteristic control thereof.  
           [0011]    Further, an object of the present invention is to provide an electromagnetic fuel injection valve capable of achieving numerous variations of a spray and injection quantity.  
           [0012]    In other words, the present invention devises specifications for an injection orifice, for example, the attitude or angle of inclination, shape, and number thereof, and more specifically, focuses on changing the angle of inclination of each injection orifice, using at least two pairs of injection orifices, changing the cross-sectional shape of the aperture of each injection orifice of a pair of injection orifices, and adding a third injection orifice. A first invention is an electromagnetic fuel injection valve having an electromagnetic coil; a nozzle body, in which at least a pair of injection orifices are formed such that jets of injected fuel from these injection orifices impinge upon one another inside a combustion chamber; and a needle valve, which sits on the seat portion of this nozzle body, and, in addition, is capable of opening and closing the above-mentioned injection orifices by exciting the above-mentioned electromagnetic coil, being constituted such that the above-mentioned jets resulting from fuel injected from the above-mentioned injection orifices are made to impinge upon one another, and are injected as a flat-shaped spray, this electromagnetic fuel injection valve being such that the respective angles of inclination of the above-mentioned injection orifices relative to the axis of the above-mentioned needle valve are made to differ from one another.  
           [0013]    As for the above-mentioned injection orifice of the one side, this can be formed parallel to the above-mentioned axis of the above-mentioned needle valve, and as for the above-mentioned injection orifice of the other side, this can be formed so as having a predetermined angle of inclination relative to the above-mentioned axis of the above-mentioned needle valve.  
           [0014]    A second invention is an electromagnetic fuel injection valve, having an electromagnetic coil; a nozzle body, in which forms at least a pair of injection orifices are formed such that jets of injected fuel from the injection orifices impinge upon one another inside a combustion chamber; and a needle valve, which sits on the seat portion of this nozzle body, and which is capable of opening and closing the above-mentioned injection orifices by exciting the above-mentioned electromagnetic coil, said electromagnetic fuel injection valve being constituted such that the above-mentioned jets of fuel injected from the above-mentioned injection orifices are made to impinge upon one another, and are injected as a flat-shaped spray, wherein at least two pairs of the above-mentioned injection orifices are formed.  
           [0015]    The jet direction, toward which the above-mentioned jet of each of the above-mentioned injection orifices is facing, is a direction in which these jets will impinge, and has a predetermined jet angle relative to a plane in the impinging direction comprising the axis of the above-mentioned needle valve, and, same is a direction in which the above-mentioned spray is formed, and faces toward a plane in the flat direction comprising the axis of the above-mentioned needle valve.  
           [0016]    A third invention is an electromagnetic fuel injection valve, having an electromagnetic coil; a nozzle body, in which at least a pair of injection orifices are formed such that jets of injected fuel from the injection orifices impinge upon one another inside a combustion chamber; and a needle valve, which sits on the seat portion of this nozzle body, and which is capable of opening and closing the above-mentioned injection orifices by exciting the above-mentioned electromagnetic coil, the electromagnetic fuel injection valve being constituted such that the above-mentioned jets of fuel injected from the above-mentioned injection orifices are made to impinge upon one another, and are injected as a flat-shaped spray, wherein apertures of the above-mentioned injection orifices have cross-sectional shapes that differs from one another.  
           [0017]    The aperture of one of the above-mentioned injection orifices can be formed to have an elliptical cross-sectional shape, while the aperture of the other of the above-mentioned injection orifices can be formed to have a circular cross-sectional shape.  
           [0018]    A fourth invention is an electromagnetic fuel injection valve, having an electromagnetic coil; a nozzle body, in which forms at least a pair of injection orifices are formed such that jets of injected fuel from the above-mentioned injection orifices impinges upon one another inside a combustion chamber, a needle valve which sits on the seat portion of this nozzle body, and which is capable of opening and closing the above-mentioned injection orifices by exciting the above-mentioned electromagnetic coil, being constituted such that the above-mentioned jets resulting from fuel injected from the above-mentioned injection orifices are made to impinge upon one another, and are injected as a flat-shaped spray, this electromagnetic fuel injection valve being such that, in addition to the above-mentioned pair of injection orifices, a third injection orifice is formed therebetween.  
           [0019]    As for the above-mentioned third injection orifice, this can be formed along the axis of the above-mentioned needle valve.  
           [0020]    In an electromagnetic fuel injection valve according to the present invention, by applying various measures to an injection orifice, it is possible to give variation to the specifications of a spray produced as a flat shape, and flow specifications.  
           [0021]    For example, in the first invention, since the angle of inclination of each of the injection orifices is made to differ from one to the other relative to the axis of the needle valve, by adjusting the relative angle of inclination thereof, it becomes possible to inject a flat-shaped spray having an arbitrary angle of deflection into a combustion chamber, and when the cylinder head or other such mounting part of an electromagnetic fuel injection valve is restricted, it is possible to aim a spray in an arbitrary direction in a combustion chamber, enabling this limitation to be dealt with precisely.  
           [0022]    In the second invention, since at least two pairs of injection orifices are used, the wide angle (in a flat-shaped spray, the spreading angle of the side that spreads wider) of a spray resulting from a pair of injection orifices is determined by the angle and position of impingement, and by appropriately positioning the respective flat-shaped sprays achieved by the two pairs of jets thereof, it is possible to combine these sprays and to handle them as a single wide spray. Further, it is also possible to obtain a high injection quantity.  
           [0023]    In the third invention, by forming injection orifices into aperture cross-sectional shapes that differ from one another, for example, by forming the injection orifice of the one side into a cross-sectional elliptical shape, and the injection orifice of the other side into a cross-sectional circular shape, in addition to ensuring the flow and spread of a fuel with the injection orifice of the one side, it is possible to achieve a flat-shaped spray.  
           [0024]    In the fourth invention, in addition to a pair of injection orifices, since a third injection orifice is formed therebetween, it is possible to expand the wide angle so as to spread a flat-shaped spray resulting from a pair of injection orifices even wider, and, in addition, it is possible to increase the penetration of a spray. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0025]    [0025]FIG. 1 is a longitudinal cross-sectional view of the principal portion of an electromagnetic fuel injection valve  1  according to a first embodiment (first invention) of the present invention;  
         [0026]    [0026]FIG. 2 is a bottom view, as seen from the combustion chamber  13  side, of an orifice plate  11  according to the first embodiment;  
         [0027]    [0027]FIG. 3 is a side view of the wide angle side (side that spreads out wider) of a spray  17  according to the first embodiment;  
         [0028]    [0028]FIG. 4 is a side view of the narrow angle side (side that becomes thinner and flatter) of a spray  17  according to the first embodiment;  
         [0029]    [0029]FIG. 5 is a bottom view, as seen from the combustion chamber  13  side, of an orifice plate  11  in an electromagnetic fuel injection valve  20  according to a second embodiment (second invention) of the present invention;  
         [0030]    [0030]FIG. 6 is a bottom view showing a flat-shaped spray resulting from a jet of injected fuel according to the second embodiment;  
         [0031]    [0031]FIG. 7 is a bottom view, as seen from the combustion chamber  13  side, of an orifice plate  11  in an electromagnetic fuel injection valve  40  according to a third embodiment (third invention) of the present invention; and  
         [0032]    [0032]FIG. 8 is a bottom view, as seen from the combustion chamber  13  side, of an orifice plate  11  in an electromagnetic fuel injection valve  50  according to a fourth embodiment (fourth invention) of the present invention. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0033]    Next, an electromagnetic fuel injection valve  1  according to a first embodiment (first invention) of the present invention will be explained on the basis of FIG. 1 through FIG. 4.  
         [0034]    [0034]FIG. 1 is a longitudinal cross-sectional view of the principal portion of an electromagnetic fuel injection valve  1 , electromagnetic fuel injection valve  1  having an electromagnetic coil  2 , an armature  3 , a nozzle body  4 , a needle valve  5 , and a return spring  6 .  
         [0035]    A seat portion  7  of the needle valve  5  is formed on the nozzle body  4 , and a fuel reservoir chamber  8  is formed on the upstream side thereof, and, in addition, an injection orifice upstream side space portion  9  is formed on the downstream side thereof, and a circular plate fastening space portion  10  is also formed on the downstream side, and the orifice plate  11  is fastened to this plate fastening space portion  10  via welding (weld portion  12 ) or the like. This orifice plate  11  part faces the combustion chamber  13 .  
         [0036]    [0036]FIG. 2 is a bottom view of an orifice plate  11  as seen from the combustion chamber  13  side.  
         [0037]    This orifice plate  11  is a circular plate material with a rectangular shape longitudinal cross section thereof, and employs, for example, SUS304 or the like, which has excellent processability, and in the center portion thereof, a pair of injection orifices (a first injection orifice  14  and a second injection orifice  15 ) are facing each other. As for the nozzle body  4 , it is generally necessary to constitute this using, for example, SUS440C or some other quenching material that has relatively high hardness, and the problem is that the processing of an injection orifice is difficult, but since the structure is such that an easy-to-process orifice plate  11  is fastened to the nozzle body  4 , the processing of the first injection orifice  14  and the second injection orifice  15  can be accomplished more easily, and, in addition, the fastened structure thereof is also simple and reliable.  
         [0038]    The first injection orifice  14  is parallel to the axis  5 C of the needle valve  5  (an angle of inclination of zero), and the second injection orifice  15  is through-formed at a predetermined angle of inclination relative to the axis  5 C. Furthermore, the first injection orifice  14  and the second injection orifice  15  have a relative spacing (pitch P), and open into a combustion chamber  13 .  
         [0039]    On the upstream surface  11 A side of the injection orifice upstream side space portion  9  side of the orifice plate  11  there is formed a circular injection orifice introducing space portion  16 , which faces the upstream side aperture portion  14 A of the first injection orifice  14  and the upstream side aperture portion  15 A of the second injection orifice  15 .  
         [0040]    This injection orifice introducing space portion  16  comprises on the inside thereof the upstream side aperture portion  14 A of the first injection orifice  14  and the upstream side aperture portion  15 A of the second injection orifice  15 , and a high-pressure fuel is introduced into the inside of the first injection orifice  14  and the second injection orifice  15  via the injection orifice introducing space portion  16 . Therefore, irrespective of the expansion, especially in the direction of the right and left sides in FIG. 1, or the capacity of the injection orifice upstream side space portion  9 , that is, without changing the size of the injection orifice upstream side space portion  9  from the existing size, it is possible to form a first injection orifice  14  and a second injection orifice  15  at an arbitrary state of inclination in an arbitrary part of the orifice plate  11 .  
         [0041]    Furthermore, as the shape of the injection orifice introducing space portion  16 , this shape is not limited to the above-mentioned circular shape, and if the upstream side aperture portion  14 A of the first injection orifice  14  and the upstream side aperture portion  15 A of the second injection orifice  15  are comprised on the inside thereof, for example, the minimum required channel is ensured, and, in addition, it is possible to employ an elliptical shape, or other arbitrary shape capable of reducing the dead volume thereof.  
         [0042]    In an electromagnetic fuel injection valve of such a constitution, by exciting the electromagnetic coil  2 , the armature  3  is driven in opposition to the biasing force of the return spring  6 , the needle valve  5 , which is integrally driven with this armature  3 , is lifted from the seat portion  7 , high-pressure fuel from the fuel reservoir chamber  8  is injected inside a combustion chamber  13  via the injection orifice upstream side space portion  9 , the injection orifice introducing space portion  16 , and also the first injection orifice  14  and the second injection orifice  15 , and here, in accordance with the jets impinging upon each other, a flat-shaped spray  17  (fan spray) is formed.  
         [0043]    A flat-shaped spray  17  (fan spray) is formed by the respective jets of injected fuel, which are injected from the pair of a first injection orifice  14  and a second injection orifice  15 , impinging upon one another inside the combustion chamber  13 .  
         [0044]    More specifically, a pair of high-pressure jets from the pair of a first injection orifice  14  and a second injection orifice  15  spread out in a perpendicular direction in a plane comprising these jets from the impinging part thereof. That is, a spray  17  spreads out uniformly in an overall oval shape or flat shape such that the front side of the impinging direction of the jets becomes wide, and the side sides become narrow, and atomization of the fuel is achieved by the impinging of the jets, and, in addition, the mixing of the air and fuel inside the combustion chamber  13  is performed favorably.  
         [0045]    Because the shape or configuration of this spray  17  is narrow and wide, the adherence of fuel to the top surface of a piston  18  at compression when the piston  18  rises up inside the combustion chamber  13  can be held in check, enabling the prevention of worsening emissions.  
         [0046]    [0046]FIG. 3 is a side view of the wide-angle side of the spray  17  thereof (the side that spreads out further), and FIG. 4 is a side view of the narrow-angle side of the spray  17  thereof (the side that is thinner and flatter), and with a spray  17  of a shape such as this, the atomization of the fuel is promoted uniformly, and, in addition, the air/fuel mixture state inside the combustion chamber  13  can be made favorable.  
         [0047]    However, since the first injection orifice  14  is parallel to the axis  5 C of the needle valve  5 , and the second injection orifice  15  has an angle of inclination θ relative to the axis  5 C, in other words, since the injection orifices have attitudes that differ from one another, as shown in FIG. 4 in particular, a spray  17  comes to have an angle of deflection α, and is injected in a direction, which deviates from the direction from the axis  5 C to the combustion chamber  13 . Therefore, even when an electromagnetic fuel injection valve  1  is restricted by the mounting position of a cylinder head (not shown in the figures), a spray  17  can be deflected in an arbitrary direction, enabling a degree of freedom to be provided to the mounting position of an electromagnetic fuel injection valve  1 .  
         [0048]    Furthermore, a thin, wide spray configuration is maintained even under a back pressure environment resulting from piston  18  compression. Further, as for the penetration (penetrating force) of a spray  17 , the control thereof can be performed by the fuel pressure.  
         [0049]    Since an injection orifice introducing space portion  16  is formed on the upstream side surface  11 A of the orifice plate  11 , by ensuring the size or spread of the injection orifice introducing space portion  16  thereof, it is possible to control the position and size of the upstream side aperture portion  14 A of the first injection orifice  14  and the upstream side aperture portion  15 A of the second injection orifice  15 , which are positioned on the inside thereof, the diameter, angle of inclination θ, and the pitch P of the first injection orifice  14  and the second injection orifice  15  can be selected with an arbitrary degree of freedom, and arbitrary spray specifications of a spray  17  and arbitrary flow specifications, such as a high injection quantity, can be achieved.  
         [0050]    Thus, in accordance with the impingement of jets from the first injection orifice  14  and the second injection orifice  15 , it is possible to form a flat-shaped spray  17 , and, in addition, it is possible to increase the degree of freedom of injection into a combustion chamber  13  by atomizing the fuel and maintaining a thin, wide spray  17  configuration within a back pressure environment inside the combustion chamber  13 .  
         [0051]    Next, FIG. 5 is a bottom view, as seen from the side of the combustion chamber  13 , of the orifice plate  11  in an electromagnetic fuel injection valve  20  according to a second embodiment (second invention) of the present invention, and two pairs of injection orifices (a first pair  21  and a second pair  22 ) are formed in the orifice plate  11 .  
         [0052]    The first pair  21  has a first injection orifice  23  and a second injection orifice  24 , and the second pair  22  has a first injection orifice  25  and a second injection orifice  26 .  
         [0053]    The first pair  21  and second pair  22  are centered around the axis  5 C of the needle valve  5 , and are grouped top and bottom in FIG. 5 by a plane in the impinging direction  27 , which passes through the axis  5 C, causing the respective first injection orifice  23  and second injection orifice  24 , and also the first injection orifice  25  and second injection orifice  26  to achieve plane symmetry relative to a plane in the flat direction  28  that is perpendicular to the plane in the impinging direction  27  thereof. Further, the first injection orifice  23  and second injection orifice  24 , and also the first injection orifice  25  and second injection orifice  26  achieve plane symmetry relative to the plane in the impinging direction  27  as well.  
         [0054]    [0054]FIG. 6 is a bottom view similar to FIG. 5, which shows a flat-shaped spray resulting from jets of injected fuel, and the respective jet directions (first jet direction  23 A and second jet direction  24 A) of the first injection orifice  23  and second injection orifice  24  in the first pair  21  have a predetermined jet angle β relative to the plane in the impinging direction  27 , which is different from the above-mentioned angle of inclination θ. Therefore, there is also a predetermined jet angle (90−β) relative to the plane in the flat direction  28 .  
         [0055]    The respective jet directions (first jet direction  25 A and second jet direction  26 A) of the first injection orifice  25  and second injection orifice  26  in the second pair  22  have a predetermined jet angle β relative to the plane in the impinging direction  27 , which is different from the above-mentioned angle of inclination θ. Therefore, there is also a predetermined jet angle (90−β) relative to the plane in the flat direction  28 .  
         [0056]    Thus, the plane of symmetry comprises the axis  5 C of the needle valve  5 , and, in addition, fuel injection is performed such that the jets of the first pair  21  drift apart from one another relative to the jets of the second pair  22  in the direction of the plane of symmetry (plane in the flat direction  28 ) of each of the first pair  21  and the second pair  22 . In other words, the first pair  21  and the second pair  22  are constituted so as to carry out fuel injection such that the jets thereof drift apart from one another.  
         [0057]    In an electromagnetic fuel injection valve  20  of such a constitution, as shown in FIG. 6, the jets resulting from the first pair  21  and the second pair  22  combine on the plane in the flat direction  28  and become a flat-shaped spray  29  (fan spray), but the spray  29  comprises a center spray  30  resulting from the combined jets of the first pair  21  and the second pair  22 , a first spray  31  resulting mainly from the first pair  21 , and a second spray  32  resulting mainly from the second pair  22 .  
         [0058]    Therefore, it is possible to achieve a spray  29  having an arbitrary size and spread in accordance with two pairs of a first pair  21  and a second pair  22  in place of the pair of a first injection orifice  14  and a second injection orifice  15  in the electromagnetic fuel injection valve of FIG. 1, and an arbitrary required quantity can be ensured for the injection quantity as well.  
         [0059]    Of course, pairs of injection orifices are not limited to two pairs, and can be constituted so as to cope with the requirements of a prescribed internal combustion engine by providing pairs of a number in excess thereof.  
         [0060]    Furthermore, if another injection orifice (a central injection orifice, not shown in the figures) is formed in the position of the axis  5 C of the needle valve  5 , that is, along the axis  5 C in the center portion of the first injection orifice  23  and second injection orifice  24  of the first pair  21 , as well as the first injection orifice  25  and second injection orifice  26  of the second pair  22 , the spread of a spray  29  will increase even further according to a jet from this central injection orifice, and, in addition, it is possible to increase the penetration of the tip portion of the center spray  30  thereof by extending same further forward, and it is possible to make the cross-sectional shape at the tip part of a spray  29  less bumpy, and smoother.  
         [0061]    [0061]FIG. 7 is a bottom view, as seen from the side of the combustion chamber  13 , of the orifice plate  11  in an electromagnetic fuel injection valve  40  according to a third embodiment (third invention) of the present invention, and shows in the orifice plate  11  a pair of injection orifices (a first injection orifice  41  and a second injection orifice  42 ), the aperture cross-sectional shapes of which differ from one another.  
         [0062]    That is, as for the first injection orifice  41 , the aperture cross-sectional shape thereof is an elliptical shape, and as for the second injection orifice  42 , the aperture cross-sectional shape thereof is a circular shape.  
         [0063]    A plane in the impinging direction  43  is formed passing through the center of the first injection orifice  41  and the second injection orifice  42 , as well as through the axis  5 C of the needle valve  5 , a plane in the flat direction  44 , which is orthogonal to this plane in the impinging direction  43  at the axis  5 C, is formed, and the major axis of the first injection orifice  41  is positioned parallel to the plane in the flat direction  44 .  
         [0064]    Even in an electromagnetic fuel injection valve  40  of such a constitution, it is possible to achieve a flat-shaped spray in accordance with the jets from the first injection orifice  41  and the second injection orifice  42 , and since it is possible to make the effective cross section of the channel of the first injection orifice  41  larger by forming the first injection orifice  41  inside the above-mentioned injection orifice introducing space portion  16  (FIG. 1) so as to be longer in the major axis direction thereof, a high flow rate spray can be achieved.  
         [0065]    Furthermore, as the first injection orifice  41  and the second injection orifice  42 , it is also possible to form these not in an elliptical shape and a circular shape, but rather as an injection orifice of a rectangular shape or a square shape.  
         [0066]    [0066]FIG. 8 is a bottom view, as seen from the side of the combustion chamber  13 , of the orifice plate  11  in an electromagnetic fuel injection valve  50  according to a fourth embodiment (fourth invention) of the present invention, and in the orifice plate  11 , there are formed the first injection orifice  14  and the second injection orifice  15  of the electromagnetic fuel injection valve  1  of FIG. 1, and a third injection orifice  51 , which is positioned in a position central thereto.  
         [0067]    The third injection orifice  51  is made to correspond to the axis  5 C of the needle valve  5 , and is formed so as to pass therethrough, and the first injection orifice  14 , the third injection orifice  51  and the second injection orifice  15  are positioned in a straight line on a plane in the impinging direction  52 .  
         [0068]    In an electromagnetic fuel injection valve  50  of such a constitution, in addition to a flat-shaped spray in accordance with the first injection orifice  14  and the second injection orifice  15 , because a linear jet from the third injection orifice  51  passes through the center of the spray thereof, and is injected into a combustion chamber  13 , it is possible to spread out the spray in a wide angle, and, in addition, to strengthen the penetration thereof.  
         [0069]    Further, by changing the formation position thereof along a plane in the flat direction  53 , which is orthogonal to the plane in the impinging direction  52 , as indicated by the virtual line in FIG. 8, it is possible to arbitrarily change the generation position of the penetration of a flat-shaped spray.  
         [0070]    As described hereinabove, according to the present invention, it is possible to arbitrarily adjust the specifications of a flat-shaped spray, and flow specifications in accordance with the attitude, number, shape, and additional formation of injection orifices, and it is possible to increase the degree of freedom of functionality of an electromagnetic fuel injection valve for in-cylinder direct fuel injection, such as in an in-cylinder gasoline injection system.