Honda Giken Kogyo Kabushiki Kaisha

Kabushiki Kaisha Teisan Industries

Kogyo Kabushiki Kaisha

Art Kinzoku Honda Giken Kogyo Kabushiki Kaisha

Keisuke Ban

Akimasa Daimaru

Takeo Arai

Masakazu Sato

Noriaki Miyake

Bakugo Fujito

Toshihiro Oikawa

Seiichi Koike

Yasuo Muraoka

Yasuo Ohashi

Tatsuo Sakakibara

Kousuke Kikuchi

Michio Konishi

Proposed is a method and an apparatus for controlling stress applied to a fastener member or the like by a fastening tool by detecting an elastic wave generated in the member as the stress, for instance in the form of an axial force, is applied thereto and by activating the fastening tool according to the detection results. Since the elastic wave or the acoustic wave accurately reflects the internal state of stress in the fastener member, a very precise control of the stress in the fastener member is made possible. If a plurality of vibration sensors are used, an exact identification of the source of elastic wave can be made and the measurement accuracy can be improved. When an indicator member having a property to emit a pronounced elastic wave is attached to the fastener, it is possible to freely adjust the target axial force as desired.

Method and an apparatus for controlling stress in a member and a

A method for casting a rocker arm made of light alloy for use in an overhead cam shaft type valve operating mechanism of an internal combustion engine, which rocker arm includes a thick-walled bearing section to be fitted on a rocker arm shaft and is integrally provided with a wear-resistive piece having a protrusion on its rear surface and adapted to abut a cam. After molten metal has been injected under pressure into a metallic mold for the rocker arm, a secondary pressurizing force directed in the direction of an imaginary center axis of a rocker arm shaft is exerted by means of a pressurizing rod. In the metallic mold for the rocker arm, a sprue is provided close to the position where the wear-resistive piece is disposed with respect to the position where the bearing section is formed, and the direction of the sprue is directed towards the position where the wear-resistive place is disposed.

Method for producing a rocker arm for use in an internal combustion

Method of making a cast reinforced article, such as a connecting rod which includes preparing a bundle of uni-directional inorganic fibers, at least some of which are metallic or metal coated by placing the bundle into a shaping container and heating it to partially fuse the metallic or metal coated fibers to each other. The partially fused bundle is positioned in a mold with a fixed minimum gap surrounding it. A molten light metal alloy is squeeze cast into the mold forming a matrix of the alloy and the bundle. In the case of a connecting rod, the bundle should be shaped elliptically and positioned in the mold such that (I(c) y&lt;I(c) x).

Method for making a reinforced article for an internal combustion engine

A method for controlling implements by means of a hydraulic pressure. A hydraulic pressure is fed from an accumulator to a first hydraulic circuit, after the operating pressure has been once lowered any arbitrary operating pressure or variation of the operating pressure is detected in the course of restoration to an initial set pressure, and a second hydraulic circuit is triggered by a detection signal based on this detection. In a secondary pressurization casting process to which this hydraulic control method is applied, when molten metal within an injection sleeve is filled under pressure within a cavity of a casting mold by means of an injection ram driven by an operating pressure of an accumulator, the injection ram is made to advance initially at a low speed and subsequently at a high speed, and while the introduction of the accumulator operation pressure to a hydraulic cylinder for driving the injection ram is sustained, a pressurizing rod is actuated after completion of filling of molten metal to make a secondary pressurizing force exert upon the molten metal. The operating pressure of the accumulator continues to lower in the course of advancing of the injection ram, and it begins to restore after the filling of molten metal into the cavity of the mold has been completed. Any arbitrary operating pressure or variation of the operating pressure in the course of restoration of the operating pressure is detected, and a hydraulic circuit for driving the pressurizing rod is triggered on the basis of the detection signal to make the pressurizing rod advance into the cavity.

Hydraulic control method for implements

A secondary pressurization casting method, in which molten metal is injected into and filled in a cavity of a mold and then a secondary pressurizing force is exerted upon the filled molten metal by making a secondary pressurization pin advance within a through-hole formed in the wall of the mold. After commencement of filling of the molten metal in the cavity, the secondary pressurization pin placed at an initial set position is once retreated, and subsequently it is made to advance to pressurize the molten metal. A casting fin produced around the outer circumference of the tip end of the secondary pressurization pin during the period when the molten metal is being injected and filled, is integrated with the molten metal entered into the through-hole as a result of the retreat of the secondary pressurization pin, and subsequently it is pushed into the cavity by the secondary pressurization pin. Accordingly, it would never occur that the movement of the secondary pressurization pin is prevented by a wedge effect of a casting film.

Secondary pressurization casting method

A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter less than 100 mesh in an amount of not more than 10 weight percent with respect to the total amount of fiber used, and a light alloy matrix fills and is combined with the molded body of inorganic fiber.

Fiber-reinforced piston for internal combustion engines and associated

A method of producing a fiber-reinforced composite material in which a fiber body is mounted on mounting surfaces in a mold cavity, which mounting surfaces are in fluid communication with the outside of the mold through air relief passages. A molten matrix metal is poured into the mold cavity and then subjected to a high hydrostatic pressure so as to be filled into the fiber body while expelling the air from the fiber body to the outside of the mold through the air relief passages. The molten metal is thereafter filled into the air relief passages and solidifies immediately to seal the mold cavity from the ambient atmosphere whereby the molten matrix in the mold cavity is rapidly solidified under high pressure to form a fiber-reinforced composite material of high quality with inclusion of substantially reduced voids or cavities.

Method of producing fiber-reinforced composite material

A method of making a connecting rod for an internal combustion engine which includes shaping a bundle of unidirectional inorganic fibers, placing the bundle into a shaping container and heating it partially in order to fuse the fibers to each other. The partially fused bundle is positioned in a mold in such a manner to produce an extra gap for a predetermined machining allowance between the bundles and cavities. A molten light metal alloy is squeeze cast into the mold under high pressure, i.e., 500-2000 kg/cm.sup.3, forming a matrix annular layer around the bundle. The rod portion of the obtained connecting rod is machined to remove defects in casting, such as a fatigue crack, a blow-hole or mixing of oxidated substances and takes the shape of a circular or elliptical cross-section.

Method of making a connecting rod

A method for producing a fiber reinforced composite body, wherein a shaped body of inorganic fiber or a sintered body of metal or ceramic material is placed in a metal mold, and a melt of a metal alloy as a matrix is caused to be penetrated or impregnated into the shaped body by a high pressure solidification casting method so that the matrix may perfectly fill in the voids or pores of the shaped body and solidify to be a desired composite body.

Method for production of fiber-reinforced composite material

Method of constructing a fiber-reinforced piston for internal combustion

A connecting rod of an internal combustion engine, formed from a light alloy such as aluminum, has a rod portion which is selectively and locally reinforced with bundle of inorganic fibers such as stainless steel fibers. The fiber-reinforced part of the connecting rod is suitably selected in accordance with the shape and function of the connecting rod. Assuming that the axis parallel to the axis of piston pin is represented by Y and the axis orthogonal to the axis Y by X, the second moment of inertia around the Y axis is smaller than that around the X axis at any cross-section of the rod portion. At the same time, in the fiber-concentrated part of the rod portion, the second moment of inertia around the Y-axis is selected to be equal to or greater than that around the X axis.

Connecting rod of internal combustion engine

A method of producing a fiber reinforced composite article comprising forming a shaped fiber body of predetermined configuration from inorganic fibers, placing a tubular member in the shaped fiber body, the tubular member having an opened end and a plurality of communication ports therein and charging a molten matrix alloy by squeeze casting from the outside of the shaped fiber body and, additionally, from the inside of the shaped fiber body through the tubular member. The article can be a connecting rod of an internal combustion engine and the shaped fiber body can be located at a position corresponding to a rib for reinforcing the connecting rod.

Method of producing a fiber-reinforced composite article

A connecting rod for an internal combustion engine comprising a rod body having a fiber bundle reinforcement integrated therein. The fiber bundle reinforcement extends longitudinally in a central rod portion of the connecting rod and is exposed at the peripheral surface at a small end portion of the rod where a bore is provided for connection with a piston pin. The fiber bundle reinforcement is exposed in the region of the bore adjacent the central rod portion.

Connecting rod of an internal combustion engine

Disclosed in this specification is a method for casting, in which a shaped body of an inorganic fiber material is fixedly secured on a chill member, then the chill member together with the shaped body of inorganic fiber is incorporated in a predetermined part of a cast article through a fiber-reinforced composite layer to be brought about at the time of casting under high pressure solidification casting techniques.

Growing community of inventors

Fujimi, Japan

Keisuke Ban