Toyota Jidosha Kabushiki Kaisha

Teikoku Piston Ring Co., Ltd.

Teipi Industry Co., Ltd.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Masaki Hirano

Satoshi Yamada

Nobuyuki Yamashita

Noritaka Miyamoto

Toshihiro Takami

Giichiro Saito

Takashi Sato

Masami Horigome

Kouhei Shibata

Toshihiro Mihara

Yukinori Ohta

Takeshi Tsukahara

Kouhei Hori

Takeshi Hattori

Daisuke Okamoto

Tomonari Kogure

Hitoshi Tanino

Yoshio Naruse

Masaki Sugiyama

Yusuke Oishi

Tomoko Kozaki

Junghwan Hwang

Hidenari Yamamoto

Isao Katou

Daichi Miyazaki

The present embodiment is a fuel cell including a stacked body of single cells each of which includes a power generating unit and separators disposed on both surfaces of the power generating unit, in which the separators each include a metal base material, a carbon layer made of carbon and formed on a first surface of the metal base material on a power generating unit side, and a titanium nitride layer made of titanium nitride and formed on a second surface of the metal base material opposite to the first surface.

Fuel cell

Provided is a method for producing a fuel cell separator, capable of easily roughening the surface of a sheet-like metal substrate to become a fuel cell separator and thus reducing the contact resistance of the resulting fuel cell separator. Specifically, the method is a method for producing a fuel cell separator from a sheet-like metal substrate, including pulling the metal substrate at least in one direction to plastically deform the metal substrate, thereby increasing the arithmetic average roughness Ra of the surface of the metal substrate after being pulled compared to that before being pulled.

Method for producing fuel cell separator

A method for forming an iron sprayed coating on a substrate with droplets of a wire molten by an electric arc includes: a step of forming a first iron sprayed coating on the substrate, the wire for arc spraying being a first wire containing iron and 0.03 to 0.10% by mass of carbon and the compressed gas being inert gas; and a step of forming a second iron sprayed coating on the first iron sprayed coating, the wire for arc spraying being a second wire containing iron and 0.03 to 0.10% by mass of carbon and the compressed gas containing 10 to 21% by volume of oxygen gas.

Method of forming a sprayed iron coating and coated member

The invention includes: powder preparation step of obtaining magnetic core powders by mixing, of magnetic powders with thermosetting resin powders in hot state; powder filling step of filling the obtained magnetic core powders into a die; a compaction step of compacting magnetic core powders; and compact heating step of heating, compacts to the elevated temperature state at which the thermosetting resin hardens after compaction.

Method of producing powder magnetic core and method of producing magnetic core powder

A cylinder liner has an upper portion and a lower portion with respect to an axial direction of the cylinder liner. A high thermal conductive film is provided on an outer circumferential surface of the upper portion. A low thermal conductive film is provided on an outer circumferential surface of the lower portion. The cylinder liner reduces temperature difference of a cylinder along its axial direction.

Cylinder liner and engine

The present invention provides a bearing material coated slide member manufactured by coating a bearing material on a sliding surface of a slide member, and a method for manufacturing the same, in which the bearing material is composed of an Sn containing alloy powder, and is forced to impact on the sliding surface while being maintained in a solid phase, to thereby form a bearing material coated layer.

Bearing material coated slide member and method for manufacturing the same

A cylinder liner for insert casting used in a cylinder block is provided. The cylinder liner includes an outer circumferential surface having a plurality of projections. Each projection has a constricted shape. A film of a metal material is formed on the outer circumferential surface and the surfaces of the projections. As a result, the cylinder liner ensures sufficient bond strength with the casting material of a cylinder block, and sufficient thermal conductivity with the cylinder block.

A cylinder lineris enveloped in a cylinder block through insert casting. The cylinder linerincludes a cylinder liner bodyand a metal coating layerformed on the bodythrough a cold spraying method. Since the metal coating layeris formed in a non-molten and oxygen free state, few oxygen films or oxygen layers are formed on the surface of or in the interior of the metal coating layer. Thus, the thermal conductivity of the metal coating layeris sufficiently high. As a result, the thermal conductivity from the metal coating layerto the cylinder block is sufficiently high.

Component for insert casting, cylinder block, and method for manufacturing cylinder liner

A cylinder liner has an outer circumferential surface on which a film is formed. The film functions to form gaps between the cylinder block and the cylinder liner. Alternatively, the film functions to reduce adhesion of the cylinder liner to the cylinder block. The cylinder liner suppresses excessive decreases in the temperature of a cylinder.

Cylinder liner and method for manufacturing the same

A cylinder liner for insert casting used in a cylinder block is disclosed. The cylinder liner has an outer circumferential surface, and upper, middle, and lower portions with respect to an axial direction of the cylinder liner. A high thermal conductive film is formed in a section of the outer circumferential surface that corresponds to the upper portion, and a low thermal conductive film is formed in a section of the outer circumferential surface that corresponds to the lower portion. The high thermal conductive film and the low thermal conductive film are laminated in a section of the outer circumferential surface that corresponds to the middle portion, thereby forming a laminated film portion. As a result, temperature difference along the axial direction of the cylinder is reduced.

A cylinder liner for an engine cylinder block. A roughening process is performed only on an upper region of the outer surface of the cylinder liner. This increases adhesiveness with a sprayed layer at the upper region compared to a lower region of the liner outer surface. Therefore, difference in thermal conductance is produced in the axial direction of the cylinder liner. This maintains the wall temperature of the cylinder bore in an appropriate temperature range. Even if adhesiveness at the lower region of the liner outer surface is low, bottleneck-shaped projections are distributed on the liner outer surface. Thus, the bonding strength between the cylinder liner and the sprayed layer and the cylinder liner and the cylinder block via the sprayed layer is sufficient. This maintains the roundness of the cylinder bore and prevents fuel efficiency from being lowered by exhaust gas loss and mechanical loss.

Cylinder liner, cylinder block, and method for manufacturing cylinder liner

A liner outer surface is coated by a sprayed layer or a heterogeneous metal layer including a base metal phase and dispersed metal phases. During casting, liquid metal enters the sprayed layer from the dispersed metal phases and solidifies in a virtual vegetation root state. The surface of the cylinder block is thus rigidly fixed to the surface of the cylinder liner. In this case, a strong bonding force is produced between the cylinder block and the cylinder liner and high thermal conductivity is obtained compared to the prior art in which the liquid metal merely contacts a surface layer.

Growing community of inventors

Toyota, Japan

Masaki Hirano