Abstract: An electromagnetic fuel injection valve wherein a movable core disposed opposing an attracting face of a fixed core is slidably fitted onto a stem forming a valve body together with a valve part operating in cooperation with a valve seat, a valve-open side stopper is fixed to the stem so that, by making the movable core, that is attracted to the face when energizing a coil, abut against this stopper, the body is operated to open, and a valve-closed side stopper is fixed to the stem further on the seat side than the other stopper so as to restrict a stroke of the movable core between these stoppers. At least an end part of one of the valve-closed side stopper and the movable core, the end part being on a side of the other one thereof, is formed to gradually decreasing its cross-sectional area in going toward the other one.

Abstract: A glass sheet has one surface and the other surface facing the one surface in a thickness direction, wherein a fluorine concentration (average fluorine concentration by SIMS at a depth of 1 to 24 ?m) in the one surface is higher than that in the other surface. The following expression is satisfied: 0.07??F/?H2O. ?F (mol %) is a value obtained by subtracting an average fluorine concentration in the surface having the lower fluorine concentration from that in the surface having the higher fluorine concentration, and ?H2O (mol %) is an absolute value of a value obtained by subtracting an average H2O concentration in the surface having the higher fluorine concentration from that in the surface having the lower fluorine concentration.

Abstract: An electromagnetic fuel injection valve wherein a movable core disposed opposing an attracting face of a fixed core is slidably fitted onto a stem forming a valve body together with a valve part operating in cooperation with a valve seat, a valve-open side stopper is fixed to the stem so that, by making the movable core, that is attracted to the face when energizing a coil, abut against this stopper, the body is operated to open, and a valve-closed side stopper is fixed to the stem further on the seat side than the other stopper so as to restrict a stroke of the movable core between these stoppers. At least an end part of one of the valve-closed side stopper and the movable core, the end part being on a side of the other one thereof, is formed to gradually decreasing its cross-sectional area in going toward the other one.

Abstract: In a support structure of a direct fuel injection valve capable of supporting a fuel injection valve stably for a long period of time, a valve housing is made of a metal and is provided with a first load bearing portion which is to be supported by an engine in an axial direction of the valve housing, a rear end portion of the fixed core is provided with a second load bearing portion which is to be supported by a resilient holding member in the axial direction, and the first and second load bearing portions are held between the engine and the resilient holding members with a forward set load applied to the resilient holding member by a fuel distribution pipe fitted to a fuel inlet tube and fixed to the engine.

Abstract: A control device includes a difference calculating unit configured to generate a difference waveform composed of the difference between a normal operation waveform, which is a voltage waveform of the fuel injection valve at a time that the fuel injection valve is operating, and a non-operation waveform, which is a voltage waveform of the fuel injection valve at a time that the fuel injection valve is not operating, a derivative calculating unit configured to generate a differentiated waveform obtained by differentiating the difference waveform, and an operating state determining unit configured to determine the operating state of the fuel injection valve based on the differentiated waveform.

Abstract: In a vibration insulating structure of a fuel injection valve in an internal combustion engine, a vibration insulating device installed between an annular step portion of a valve installation hole provided in a cylinder head and an outer peripheral step portion of the valve fitted in the hole is formed from a ring laminated body including an upper ring engaged with the outer peripheral step portion, and at least two vibration insulating rings clamped between the upper ring and the annular step portion and superposed on each other. Multiple dents and projections each having a fine and uneven shape are formed on at least an abutment surface of each of the vibration insulating rings which abuts against an opposed one of the vibration insulating rings. Accordingly, such device can be easily obtained from a simple structure and inhibit vibration of the valve effectively, reducing vibration noise and manufacturing cost.

Abstract: An area S (m2) of a facing surface of each of injectors which faces a glass ribbon is set so as to satisfy: S?(0.0116×P×Cg×T)/{?×F×?(Tgla4?Tinj4)}, wherein P is an output (ton/day) of the glass ribbon; Cg is a specific heat (J/(kg·° C.)) of the glass; T is an acceptable temperature drop (° C.); ? is radiation factor; F is a surface-to-surface view factor; ? is Boltzmann's constant; Tgla is a temperature (K) of the glass ribbon represented by K=(Tin+Tout)/2 where Tin and Tout are measured values of the glass ribbon at the inlet and outlet of the injector, respectively; and Tinj is a temperature (K) of the facing surface of the injector.

Abstract: A glass sheet has one surface and the other surface facing the one surface in a thickness direction, wherein a fluorine concentration (average fluorine concentration by SIMS at a depth of 1 to 24 ?m) in the one surface is higher than that in the other surface. The following expression is satisfied: 0.07??F/?H2O. ?F (mol %) is a value obtained by subtracting an average fluorine concentration in the surface having the lower fluorine concentration from that in the surface having the higher fluorine concentration, and ?H2O (mol %) is an absolute value of a value obtained by subtracting an average H2O concentration in the surface having the higher fluorine concentration from that in the surface having the lower fluorine concentration.

Abstract: A glass sheet includes 4 mol % or more of Al2O3. In the glass sheet, a surface Na2O amount in one surface of the glass sheet is lower than the surface Na2O amount in the other surface of the glass sheet by 0.2 mass % to 1.2 mass %.

Abstract: An area S (m2) of a facing surface of each of injectors which faces a glass ribbon is set so as to satisfy: S?(0.0116×P×Cg×T)/{?×F×?(Tgla4?Tinj4)}, wherein P is an output (ton/day) of the glass ribbon; Cg is a specific heat (J/(kg·° C.)) of the glass; T is an acceptable temperature drop (° C.); ? is radiation factor; F is a surface-to-surface view factor; ? is Boltzmann's constant; Tgla is a temperature (K) of the glass ribbon represented by K=(Tin+Tout)/2 where Tin and Tout are measured values of the glass ribbon at the inlet and outlet of the injector, respectively; and Tinj is a temperature (K) of the facing surface of the injector.

Abstract: A method for manufacturing a laminated film-coated glass substrate in which a laminated film is formed on a glass ribbon by a CVD method by means of a plurality of injectors disposed in an annealing furnace and the glass ribbon is cut, wherein the laminated film is formed at Tg+50° C. or lower and at least two layers of the laminated film are formed in a temperature range of Tg+50° C. to Tg. In addition, a temperature drop K1 per unit length of the glass ribbon in a temperature range where all layers of the laminated film are formed is 0° C./m<K1<10° C./m.

Abstract: In a support structure of a direct fuel injection valve capable of supporting a fuel injection valve stably for a long period of time, a valve housing is made of a metal and is provided with a first load bearing portion which is to be supported by an engine in an axial direction of the valve housing, a rear end portion of the fixed core is provided with a second load bearing portion which is to be supported by a resilient holding member in the axial direction, and the first and second load bearing portions are held between the engine and the resilient holding members with a forward set load applied to the resilient holding member by a fuel distribution pipe fitted to a fuel inlet tube and fixed to the engine.

Abstract: A method for manufacturing a laminated film-coated glass substrate in which a laminated film is formed on a glass ribbon by a CVD method by means of a plurality of injectors disposed in the annealing furnace, wherein: the laminated film is formed at Tg+50° C. or lower; and in each of the injectors, if a quantity of heat exchanged between the injector and the glass ribbon is expressed by Q1 (kW), a quantity of heat exchanged between a heater paired with the injector and the glass ribbon is expressed by Q2 (kW), and an output of the glass is expressed by P (tons/day), then the relational expression |Q1|?P×0.116?|Q2|?|Q1| is satisfied.

Abstract: In an electromagnetic fuel injection valve, a valve housing includes: a cylinder-shaped valve seat member having a valve seat in its front end portion; a magnetic cylindrical body coaxially connected to a rear end portion of the valve seat member; a nonmagnetic cylindrical body coaxially and liquid-tightly welded to a rear end of the magnetic cylindrical body; and a hollow cylindrical stationary core coaxially and liquid-tightly welded to a rear end of the nonmagnetic cylindrical body. A valve assembly is housed in the valve housing and includes: a valve body capable of being seated on the valve seat; and a movable core connected to a rear end of the valve body and opposed to a front end of the stationary core. The valve body and the valve seat member are respectively made of different martensitic stainless steels so that a hardness of the valve body is higher than that of the valve seat member.

Abstract: A valve assembly including a valve element and a movable core is housed in a valve housing including a valve seat member, a magnetic cylinder, a nonmagnetic collar and a stationary core. A coil assembly is disposed on an outer periphery of the stationary core, and housed in a coil housing. The coil housing has a front end wall part which is formed such that a thickness thereof in an axial direction is larger than a thickness of its shell part in a radial direction. A magnetic path forming part is formed by the front end wall part and a rear-side cylinder part of the magnetic cylinder which is fitted to an inner peripheral surface of the front end wall part. The magnetic path forming part surrounds the movable core substantially by the entirety of its inner peripheral surface to magnetically connect the movable core and the shell part to each other. A positioning step part is formed at a rear end of the magnetic cylinder so as to support a front end of the magnetic assembly.

Abstract: In an electromagnetic fuel injection valve, a valve housing includes: a cylinder-shaped valve seat member having a valve seat in its front end portion; a magnetic cylindrical body coaxially connected to a rear end portion of the valve seat member; a nonmagnetic cylindrical body coaxially and liquid-tightly welded to a rear end of the magnetic cylindrical body; and a hollow cylindrical stationary core coaxially and liquid-tightly welded to a rear end of the nonmagnetic cylindrical body. A valve assembly is housed in the valve housing and includes: a valve body capable of being seated on the valve seat; and a movable core connected to a rear end of the valve body and opposed to a front end of the stationary core. The valve body and the valve seat member are respectively made of different martensitic stainless steels so that a hardness of the valve body is higher than that of the valve seat member.

Abstract: A valve assembly including a valve element and a movable core is housed in a valve housing including a valve seat member, a magnetic cylinder, a nonmagnetic collar and a stationary core. A coil assembly is disposed on an outer periphery of the stationary core, and housed in a coil housing. The coil housing has a front end wall part which is formed such that a thickness thereof in an axial direction is larger than a thickness of its shell part in a radial direction. A magnetic path forming part is formed by the front end wall part and a rear-side cylinder part of the magnetic cylinder which is fitted to an inner peripheral surface of the front end wall part. The magnetic path forming part surrounds the movable core substantially by the entirety of its inner peripheral surface to magnetically connect the movable core and the shell part to each other. A positioning step part is formed at a rear end of the magnetic cylinder so as to support a front end of the magnetic assembly.