Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Otics Corporation

Kabushiki Kaisha Toyota Jidoshokki

Masaaki Tani

Yoshiaki Fukushima

Daisuke Okamoto

Akane Okada

Naoki Hiramatsu

Takeshi Hattori

Koki Yamaguchi

Shin Tajima

Hiroshi Hohjo

Naoki Nishikawa

Shinjiro Saigusa

Motohiro Yuge

Kohei Ishii

Masashi Ohtsubo

Masakazu Murase

Arimitsu Usuki

Toshihisa Shimo

Hitotoshi Murase

Naoki Hasegawa

Daisuke Ichigozaki

Masaya Kawasumi

Masatoshi Sugiura

Fumio Shimizu

Shinichiro Kikuoka

Hidefumi Kishimoto

Yoshifumi Wakisaka

Toshimitsu Takahashi

Masahide Sakurai

Kazuhisa Yano

Toshio Horie

Eisuke Hoshina

Takayuki Maezako

Jung Hwan Hwang

Kazuo Okamoto

Kiyotaka Onodera

Reona Takagishi

Naoki Iwata

Junghwan Hwang

Fuminori Hosoda

Masashi Hara

Katsuya Mizutani

A powder magnetic core having excellent specific resistance or strength. The powder magnetic core has soft magnetic particles, first coating layers that coat the surfaces of the soft magnetic particles and include aluminum nitride, and second coating layers that coat at least a part of the surfaces of the first coating layers and include a low-melting-point glass having a softening point lower than an annealing temperature for the soft magnetic particles. The first coating layers including aluminum nitride are excellent in the wettability to the low-melting-point glass which constitutes the second coating layers and suppress diffusion of constitutional elements between the soft magnetic particles and the low-melting-point glass of the second coating layers. The powder magnetic core can stably exhibit a higher specific resistance and higher strength than the prior art owing to such a synergistic action of the first coating layers and second coating layers.

Powder magnetic core, powder for magnetic cores, and methods of manufacturing them

A forming method of a thermal insulation film includes a first step of forming an anode oxidation coating film on an aluminum-based wall surface, the anode oxidation coating film including micro-pores each having a diameter of micrometer-scale and nano-pores each having a diameter of nanometer-scale; and a second step of coating a surface of the anode oxidation coating film with a sealant containing filler to seal at least part of the micro-pores and the nano-pores by the sealant so as to form the thermal insulation film.

Forming method of thermal insulation film and internal combustion engine

The present invention provides a variable valve mechanism of an internal combustion engine, which includes an input member, an output member, a slider and a variable device. The output member has internal space formed therein and has a first cutout and a second cutout which are formed at two positions separated from each other in the swing direction so as to extend from an outer periphery of the output member to the internal space, and the input member is mounted in the internal space so as to extend through both inner sides of the first and second cutouts, and is brought into contact with inner side surfaces of the cutouts from both sides in the thrust direction, whereby relative displacement of the input member together with the slider in the thrust direction with respect to the output member is restricted at two positions by the first and second cutouts.

Variable valve mechanism of internal combustion engine

A soft magnetic member is formed such that, when a differential relative permeability in an applied magnetic field of 100 A/m is represented by a first differential relative permeability &#x3bc;'L, and when a differential relative permeability in an applied magnetic field of 40 kA/m is represented by a second differential relative permeability &#x3bc;&#x2032;H, a ratio of the first differential relative permeability &#x3bc;&#x2032;L to the second differential relative permeability &#x3bc;&#x2032;H satisfies a relationship of &#x3bc;&#x2032;L/&#x3bc;&#x2032;H&#x2264;10, and a magnetic flux density in an applied magnetic field of 60 kA/m is 1.15 T or higher.

Soft magnetic member, reactor, powder for dust core, and method of producing dust core

A variable valve mechanism of an internal combustion engine includes a plurality of swing members and a variable device that displaces a control shaft to displace a plurality of slider gears of the swing members at a time, thereby changing valve lifts of the plurality of swing members at a time by meshing of helical splines. The swing members include a first swing member for a predetermined cylinder of a plurality of cylinders and a second swing member for a cylinder other than the predetermined cylinder, and a helix angle of the helical splines varies between the first and the second swing members. The variable device displaces the control shaft to a predetermined normal position to perform a normal operation, and displaces the control shaft to a predetermined cylinder cutoff position to perform a cylinder cutoff operation in which the second swing member does not drive a valve.

A forming method of a thermal insulation film, including: a first step of forming an anode oxidation coating film on an aluminum-based wall surface, the anode oxidation coating film including micro-pores each having a diameter of micrometer-scale and nano-pores each having a diameter of nanometer-scale; a second step of abrading a surface of the anode oxidation coating film with abrasive powders and bringing the abrasive powders into the micro-pores located at the formed abraded surface; and a third step of forming a protection film on the abraded surface to produce a thermal insulation film including the anode oxidation coating film and the protection film.

Forming method of thermal insulation film

A valve mechanism for an internal combustion engine is provided with a cam that rotates in conjunction with rotation of a crankshaft, an engine valve that is lifted and opened along with rotation of the cam, a variable lift amount mechanism that is arranged between the cam and the engine valve and varies the maximum amount of lift of the engine valve, and a lost motion mechanism that is arranged between the cam and the engine valve and absorbs the amount of lift of the engine valve by contracting when drive force is received from the cam to maintain a closed state of the engine valve. The maximum amount of contraction of the lost motion mechanism is set to such a value that the lost motion mechanism absorbs the minimum value of the maximum lift amount of the engine valve.

Valve mechanism for internal combustion engine and control device for valve mechanism

A powder for a powder magnetic core, a powder magnetic core, and methods of producing those products are provided, so that mechanical strength of a powder magnetic core can be enhanced by hydrosilylation reaction between vinylsilane and hydrosilane without degrading magnetic properties. The powder for a powder magnetic core is composed of magnetic particleshaving a surfacecoated with an insulating layer, wherein the insulating layerincludes a polymer resin insulating layercomprising vinylsilaneand hydrosilane.

Powder for powder magnetic core, powder magnetic core, and methods for producing those products

The present invention is characterized in that it is a process for synthesizing an organic/inorganic composite that not only comprises an oxide of silicon and metal, oxide which includes a bond being expressed by 'M-O-M' (where 'M' independently represents silicon atom or metal atom), but also possesses an organic group which is bonded to a part of silicone atoms at least; and it includes: a preparation step of preparing a raw-material solution by dissolving an organo alkoxysilane, which possesses one or more alkoxy groups and has the silicon atom that is bonded with the organic group by covalent bond, and a metallic compound, which includes the metal atom, in a first solvent, which is a polar solvent; a reaction step of synthesizing the organic/inorganic composite by not only hydrolyzing the organo alkoxysilane and the metallic compound but also condensing them by means of dehydration; and a removal step of adding a second solvent, which does not dissolve compatibly with a solution that has undergone the reaction step, to the solution, thereby dissolving the organic/inorganic composite in the second solvent, and thereafter removing another solution, which does not dissolve compatibly with the second solvent. It is possible to recover the organic/inorganic composite readily by means of the present synthesizing process.

Process for synthesizing organic/inorganic composite

A paint composition includes a layer organic-inorganic composite, and titanium alkoxide in an amount of from 1 to 50 parts by weight with respect to the layer organic-inorganic composite taken as 100 parts by weight. The layer organic-inorganic composite is composed of a laminated substance. The laminated substance includes a tetrahedral structural layer and an octahedral structural layer. The tetrahedral structural layer is made of tetrahedral structures whose central atom M' is Si or a first metallic atom substituting for a part the Si, at least a part of the central atom M&#x2032; covalent-bonded to an organic group R involving or free from a polymerizable functional group. The octahedral structural layer is made of octahedral structures whose central atom M is a second metallic atom.

Paint composition, proces for producing wear-resistant coating film using the same, and wear-resistant coating film comprising the same

This invention provides liquid crystal compositions for light controlling materials of light scattering type having both memory and high speed response characteristics. The composition neither needs a temperature controlling device nor a device for imparting a shear stress as a memory erasing device, because the composition comprises a two-frequency addressing liquid crystal or such liquid crystal with an ionic component. The two-frequency addressing liquid crystal responds to an electric field and exhibits a positive dielectric anisotropy or a negative dielectric anisotropy depending on the frequency region of the electric field. Because the flat shaped particles of the present invention exhibit an affinity with the liquid crystal, the particles are dispersed in the liquid crystal and form liquid crystal domains effectively.

Liquid crystal composition

The present invention provides an inorganic-organic hybrid material having both the characteristics of the inorganic material and the characteristics of the organic material. The material has a lamellar structure formed by piling a sheet of silicon tetrahedrons upon a sheet of titanium octahedrons. In this lamellar structure, an organic group is bonded to a center atom of a tetrahedron via a covalent bond. The organic group can be polymerized to make the organic phyllotitanosilicate a tough and hard coating material. The hybrid material of the present invention thus has both the characteristics, such as high hardness and heat resistance, of the constitutive inorganic material and the characteristics, such as flexibility and filmability at room temperature, of the constitutive organic material, and further has an excellent UV-blocking property.

Organic phyllotitanosilicate, shaped body thereof, and method for

A hybrid material includes a layer containing an octahedral sheet comprising octahedra linked with each other to provide a sheet-like structure and a tetrahedral sheet comprising tetrahedra linked with each other to provide a sheet-like structure; and an organic portion bonded by covalent bond to an element located at the tetrahedral site of the tetrahedra constituting the layer; each of the octahedra having an element at the octahedral site thereof with a valence in the range of from 3.5 to 4.5 on average over the entire octahedral sheet, and each of the tetrahedra having an element at the tetrahedral site thereof with a valence in the range of from 4.5 to 5.5 on average over the entire tetrahedral sheet. A process for fabricating the hybrid material and a process for controlling the content of the organic and inorganic components of the hybrid material are also provided. Any type of organic component is allowed to be incorporated in the hybrid material.

Hybrid material and process for producing the same

A layered inorganic-organic polymer having the features of both inorganic and organic materials and a coating material produced therefrom. The former is produced, for example, by reacting an organoalkoxysilane having alkoxyl groups and organic groups with a metal salt or alkoxide in an alkaline solution. This reaction yields a layered inorganic-organic polymer composed of one or two sheets of tetrahedrons with a central atom of Si or a metal and a sheet of octahedrons with a central atom of a metal, part or all of the central atoms of the tetrahedrons being covalently bonded to organic groups. If the organic group is one which contains a functional group capable of polymerization, the resulting layered inorganic-organic polymer may be polymerized with a functional group to give a firm coating material. The functional group of the organic group may be bonded to an organic compound. The layered inorganic-organic polymer has both the features of inorganic materials such as high hardness and good heat resistance and the features of organic materials such as flexibility and sheet formability at room temperature. In addition, it has good affinity for organic solvents and organic substances.

Layered inorganic-organic polymer shaped article thereof and process for

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Nagakute, Japan

Masaaki Tani