摘要:
A laminated fuel swirl element is employed, in which a strong swirl force flow is imparted to the fuel at a remote position relative to an injection hole, while on the other hand, at a position near the fuel injection hole, a weak swirl force is imparted to the fuel. A complex solid cone spray can be obtained in this way, which spray has a superior dispersion characteristic obtained by attracting small diameter droplets, which are generated at an outer peripheral portion of the spray, through a spray portion which is generated in the vicinity of a central area of the spray and has a large velocity.
摘要:
In an electromagnetic fuel injection valve for injecting fuel by opening/closing a fuel flowing path, including a valve seat, a valve element for opening/closing the fuel flowing path formed between the valve seat and the valve element, and a drive unit having at least one coil, for driving the valve element. The drive unit includes a first magnetomotive force generating device using the at least one coil and a second magnetomotive force generating device, the first magnetomotive force generating device and the second magnetomotive force generating device being composed so that the first magnetomotive force generating device generates and raises magnetomotive force at a larger rate of change in time in comparison with the second magnetomotive force generating device. A valve opening hold state is held by the second magnetomotive force generating device which uses a smaller current flow in comparison with the first magnetomotive force generating device.
摘要:
A laminated fuel swirl element is employed, in which a strong swirl force flow is imparted to the fuel at a remote position relative to an injection hole, while on the other hand, at a position near the fuel injection hole, a weak swirl force is imparted to the fuel. A complex solid cone spray can be obtained in this way, which spray has a superior dispersion characteristic obtained by attracting small diameter droplets, which are generated at an outer peripheral portion of the spray, through a spray portion which is generated in the vicinity of a central area of the spray and has a large velocity. As to the spray characteristics in an electromagnetic fuel injector of the direct injection type for use in a gasoline engine, a complex solid cone spray can be obtained, and, as a result a good ignitability of the engine can be obtained by a spray portion having a small spreading angle produced by making the inertia force strong, and the amount of the unburned gas components of the combustion can be reduced by a spray portion having a short distance or extent of travel and a large spreading angle produced by making the inertia force weak.
摘要:
An electromagnetic fuel injection valve for injecting fuel by opening/closing a fuel flow path, includes a valve seat, a valve element for opening/closing the fuel flow path formed between the valve seat and the valve element, and a drive unit having at least one coil for driving the valve element. The drive unit includes a first magnetomotive force generating device using the at least one coil and a second magnetomotive force generating device, the first magnetomotive force generating device and the second magnetomotive force generating device being composed so that the first magnetomotive force generating device generates and raises its magnetomotive force at a larger rate of change in time in comparison with the second magnetomotive force generating device. A valve open state is held by the second magnetomotive force generating device which uses a smaller current flow in comparison with the first magnetomotive force generating device.
摘要:
An electromagnetic relay for low acoustic noise in operation including a body having an insulating inner base, an electromagnet having an iron core, a moving spring contact having an armature, and a fixed spring contact for making an on/off action between the moving and fixed spring contacts by actuating the electromagnet, wherein the insulating inner base supports other members of the body, a plurality of L shaped conducting suspenders suspend the insulating inner base by each vertical arm, a plurality of U shaped blade springs support each horizontal arm of the L shaped conducting suspenders, and an insulating outer base having a plurality of outer terminal leads, each of which is gaplessly continuous to the corresponding one of the U shaped blade springs, support the body above the insulating outer base by each of the outer terminal leads, the U shaped blade springs, and the L shaped conducting suspenders in series connection.
摘要:
Provided is a novel polysaccharide derivative having a main structure of the following formula (1) in which a polysaccharide or its derivative has been chemically bonded to the inner and outer surfaces of the pores of a porous carrier at the reducing terminal of the polysaccharide or polysaccharide derivative: ##STR1## Also provided are a method of producing the novel polysaccharide derivative in which a silane agent is chemically bonded to a porous carrier and thereafter a polysaccharide having a degree of polymerization from 11 to 500 or its derivative is further chemically bonded to surface treated carrier at the reducing terminal of the polysaccharide or its derivative, and a method of producing the novel polysaccharide derivative in which a polysaccharide having a degree of polymerization from 11 to 500 or its derivative is chemically bonded to a silane agent at the reducing terminal of the polysaccharide or its derivative and thereafter the polysaccharide derivative is further chemically bonded to a porous carrier. Further provided is a separating agent for chromatography containing the novel polysaccharide derivative. The novel polysaccharide derivative has excellent solvent resistance and is useful as a separating agent for chiral resolution of chiral compounds by chromatography. The methods of the present invention efficiently give the novel polysaccharide derivative.
摘要:
A polysaccharide substance having the following formula is provided: ##STR1## Also provided is a method of producing the polysaccharide substance in which an oligosaccharide having a degree of polymerization from 3 to 10 is chemically bonded to a silane agent at the reducing terminal of the resultant oligosaccharide, the oligosaccharide compound is then polymerized to an average degree of polymerization from 11 to 500 in the presence of an enzyme. Another method for producing the polysaccharide substance is provided in which an aldehyde group at the reducing terminal of an oligosaccharide having a degree of polymerization from 3 to 10 is oxidized with an oxidizing agent, and the saccharide chain of the oxidized product is polymerized to a degree of polymerization from 11 to 500 in the presence of an enzyme, followed by the addition of an acid. The polysaccharide substance has excellent solvent resistance and is useful as a separating agent for chromatography, especially for the separation of chiral compounds.
摘要:
In a seesaw balance type microminiature electoromagnetic relay including an armature unit composed of two movable contact springs having a pivot arm formed at the center thereof and contacts formed at every end thereof, an armature having a protrusion on the back side for a pivotal movement, and an insert-molded insulator, a substrate unit composed of a common terminal for mounting the pivot arm electrically connected to a common terminal pin, a pair of switching terminals having fixed contacts for connecting the contacts of the springs electrically connected to terminal pins, and an electromagnet unit composed of a yoke, an exciter coil wound thereon, a flat shape permanent magnet provided between both ends of the yoke and two terminal pins electrically connected to the start and the end of the exciter coil, respectively; a hoop member is formed in an integrated configuration of a plurality of groups by a press blanking procedure, each group including a pair of movable contact springs, two non-magnetizing plates and two connecting bars connecting both ends of the springs and one end of the non-magnetizing plate; the armature is piled on the free edge of the non-magnetizing plate and at least one end thereof is welded; an insulator is formed by an insert-mold procedure to cover the movable contact springs and the armature, and the armature unit is formed by cutting boundary portions between the connecting bars and the movable contact springs and non-magnetizing plate. The pivot arm extended from the center part of the movable contact spring is U-shaped and a positioning member is provided at the free edge thereof or at the common terminal for mounting the pivot arm.
摘要:
A spin coating apparatus for use in applying a coating solution in film form to an upper surface of a substrate. This apparatus includes a rotary table for spinning the substrate as supported thereon in horizontal posture, the rotary table having a size larger than an outline contour of the substrate, and an upper rotary plate disposed parallel to and slightly spaced from the upper surface of the substrate supported on the rotary table. The rotary table and upper rotary plate define a flat treating space therebetween, which treating space has peripheral openings for allowing superfluous part of the coating solution to scatter outwardly therefrom. A nozzle plate is disposed between the rotary table and the substrate supported thereon. The nozzle plate receives cleaning liquid supplied through a rotary shaft of the rotary table, and directs the liquid to the lower surface of the substrate.
摘要:
A polymerizable polymer is obtained by the anionic polymerization and termination by use of a vinyl monomer. It produces a graft copolymer by co-polymerization with another monomer. The process produces a new, polymerizable, optically active polymer and a graft copolymer thereof.