Nissan Motor Company Limited

Nifco Inc.

Hiroshi Kumagai

Katsumi Morohoshi

Atsuhiro Shinoda

Masami Honma

Seiji Kamada

Mitsuo Yamada

Kenji Kikuchi

Tsuyoshi Kato

Yutaka Mabuchi

Kazumasa Kurihara

Yasutomo Kobayashi

Akihisa Hori

Takahiro Nakahigashi

Toshihide Kimisawa

Katsunori Ozaki

Takumaru Sagawa

Tatsunobu Takeda

Tomoyuki Satou

Tetsuya Enomoto

Midori Kondou

Yasuyuki Katsumata

There is provided a magnesium alloy member that includes an aluminum-containing magnesium alloy material. The magnesium alloy material has a modified layer formed at a surface thereof in such a manner that at least a surface of the modified layer has a higher aluminum content than that of any unmodified base portion of the magnesium alloy material.

Magnesium alloy member

A multi-layer hose () of a laminated layer structure having laminated an intermediate layer () including a resin containing a polyester or a polyamide, an inner layer () disposed on an inner periphery of the intermediate layer (), and an outer layer () disposed on an outer periphery of the intermediate layer () and containing a rubber, the inner layer () containing epichlorohydrin rubber or hydrin rubber and directly laminated to the intermediate layer () by a vulcanized adhesion.

Multi-layer hose

A fuel hose () includes a laminated layer structure including: an intermediate layer () containing polyvinyl alcohol and/or an ethylene-vinylalcohol copolymer; an inner layer () disposed on an inner periphery of the intermediate layer; and an outer layer () disposed on an outer periphery of the intermediate layer and containing a rubber. The inner layer () includes: a first component containing nitrile rubber; and cross-linked chains formed of carbon-carbon single bond, and is directly laminated to the intermediate layer ().

Fuel hose

There is provided a multilayer article suitable for use as a fuel hose in an automotive fuel system and the like, which has an inner rubber layer, an outer rubber layer and an inter-mediate resin layer formed of polyamine-based resin between the inner and outer rubber layers.

Multilayer article

A multi-layer hose usable for a fuel hose of an automotive vehicle. The multi-layer hose includes an intermediate layer formed of a resin whose main component includes polyester. An outer layer is provided formed of rubber and disposed outside the intermediate layer. Additionally, an inner layer is provided formed of fluoroelastomer and disposed inside the intermediate layer to be laminated directly on the intermediate layer.

A pulsation absorber is provided in a fluid channel formed in a body of a fluid coupling. Fluid flows through the fluid channel in an assembled state. The pulsation absorber is arranged to deform in a same direction as the fluid to flow in the fluid channel pulsates. The pulsation absorber thereby absorbs pulsation of the fluid.

Fluid coupling

A member for an internal combustion engine, such as a piston, a valve and a fuel injection valve. The member includes a substrate. A carbon-based coating film is formed on the substrate to cover at least a part of a region of the substrate to which region fuel for the internal combustion engine is contactable. The carbon-based coating film contains fluorine and has a thickness of 10 &#x3bc;m or less.

Member for internal combustion engine and production method thereof

A resinous tube which has a low permeability for alcohol-contained fuel in addition to usual gasoline and is sufficiently high in adhesiveness between a barrier layer (permeation-interrupting layer) and a protecting layer (layer covering the permeation-interrupting layer), is easy in reuse of marginal materials and the like, and is a low cost material arrangement is furnished. This resinous tube is formed by laminating pipe-shaped resin layers, in which a main component of at least one layer of layers constituting the tube is a resin such as PBT, PBN, PET, PEN or the like, and a main component of a layer other than the above-mentioned layer is PBT copolymer. The PBT copolymer contains an acid component and a glycol component.

Resinous tube

A fuel tank connector for connecting a fuel tank and a pipe in communicating fashion includes a gas barrier member made of a synthetic resin and having a gas barrier property. The gas barrier member includes a tubular portion and a flanged portion provided on a peripheral side of the tubular portion, which extends beyond an opening of the fuel tank. The gas barrier member is made of a liquid crystal polymer, aromatic polyamide, a blended polymer of an ethylene-vinyl alcohol copolymer and high-density polyethylene, a blended polymer of polyamide and polyethylene, or a blended polymer of polyamide and high-density polyethylene.

Fuel tank connector

A fuel hose for an automotive vehicle has an end section to which a connection-partner member is to be fitted. The fuel hose comprises an innermost layer formed of rubber or synthetic resin. The innermost layer has an inner surface defining an opening through which fuel flows and has an end section corresponding to the end section of the fuel hose. An outer layer is formed outside the innermost layer and formed of a material lower in fuel permeability coefficient than the innermost layer. Additionally, an end covering material is formed covering a surface region of the innermost layer which surface region includes the inner surface at a part extending from a sealing position to an end face of the innermost layer and the end face of the innermost layer. The end covering material is lower in fuel permeability coefficient than the innermost layer.

Fuel hose and producing method therefor

A welded structure constituted of a fuel filling container having an opening, and a welded part including a pipe-shaped section whose one end is disposed in the opening of the fuel filling container. A welding section is fixedly disposed around the outer periphery of the pipe-shaped section. The welding section is welded through a welding surface to the outer surface of the fuel filling container. In the welded structure, the welding section of the welded part includes a welding strength providing layer and a fuel permeation resistance layer which are coaxial with the pipe-shaped section of the welded part and radially laminated to define the annular welding surface. Additionally, at least an inner peripheral surface portion of the pipe-shaped section and an outer peripheral surface portion of the other end portion of the pipe-shaped section are formed of a fuel permeation resisting material.

Welded structure of fuel filling container and welded part, and welding method therefor

A tubular resin connection structure is disclosed that includes a resin connector and a resin tube. The resin tube is fixedly coupled to one of the first and second ends of the resin connector in a fluid-tight manner by a weld disposed between the resin connector and the resin tube. Preferably, one end of the resin tube is inserted into a molding die and a portion of the resin connector is welded to the resin tube by overmolding the resin of the resin connector during injection molding. In other words, the weld between the resin connector and the resin tube is formed overmolding a resin of the resin connector over the resin tube to simultaneously mold the resin connector and form the weld between the resin connector and the resin tube.

Growing community of inventors

Yamato, Japan

Hiroshi Kumagai