Class / Patent application number | Description | Number of patent applications / Date published |
029888400 | Poppet or I.C. engine valve or valve seat making | 19 |
20090144979 | METHOD OF MANUFACTURING AND CONTROLLING A BUTTERFLY VALVE FOR AN INTERNAL COMBUSTION ENGINE - A method of manufacturing and controlling a butterfly valve for an internal combustion engine; the manufacturing and control method includes the steps of: establishing a maximum gaseous flow rate value which may flow through the feeding pipe when the butterfly plate is in the closing position; determining a conventional closing position at which the gaseous flow rate which flows through the feeding pipe is essentially equal to the maximum gaseous flow rate value; driving an actuator device so as not to normally pass the conventional closing position; and dimensioning the position of a catch element, so that when a rotational shaft abuts against the catch element the gaseous flow rate which flows through the feeding pipe is essentially lower than the maximum gaseous flow rate value. | 06-11-2009 |
20090282675 | METHOD OF MAKING TITANIUM-BASED AUTOMOTIVE ENGINE VALVES USING A POWDER METALLURGY PROCESS - An automotive engine valve stem, engine valve and method of producing both. The valve includes a head and a stem joined to the head. Lightweight, high-temperature materials, such as titanium-based materials may be used to make up at least a the majority of the valve. These materials are combined with fabrication techniques that may vary between the head and the stem, where at least a part of the valve is made by dynamic magnetic compaction. While a majority of the stem may be made from a titanium-based powder material, its tip may be made of a high strength hardened material, such as a steel alloy. The valve head may be made by single press and sintering, double press and sintering, forging and machining, forging and sintering, and dynamic magnetic compaction and sintering. | 11-19-2009 |
20090293275 | Intake valve structure and method of manufacture - A method of manufacturing an intake vallve for an internal combustion engine is disclosed. The method comprises providing a valve base comprising an elongated stem and an enlarged portion. A floating peripheral ring is provided and is positioned on the valve base. The floating peripheral ring is locked into place with an annular locking component. The locking component defines a range of motion of the floating peripheral ring with respect to the valve base. | 12-03-2009 |
20090320284 | Method of Forming Injection Hole for Injector - In a method for boring injection holes of an injector | 12-31-2009 |
20100229385 | Method of Processing Orifice - Disclosed herein is a method for processing an orifice capable of processing recessed portions and orifices, each having a unique hole diameter different from each other, to high positioning accuracy and in a short time. | 09-16-2010 |
20130232790 | TOOL FOR ATTACHING VALVE KEYS TO THE VALVE OF THE ENGINE - A tool for attaching valve keys to a valve stem includes an elongated holder with a longitudinal axis, an inner hollow space and an end opening. An elongated core is arranged in the hollow space of the holder coaxially to the longitudinal axis. An elongated recess for receiving a substantial upper portion of the valve stem is provided in the end region of the core coaxially to the longitudinal axis. The recess of the core issues into the end opening and has a depth which is greater than or at least equal to the axial distance between the end and the annular groove of the valve stem. The core at least partially covers the annular groove, such that the valve keys can be supplied to the lateral surface of a valve stem underneath the annular groove and incorrect engagement can be avoided. | 09-12-2013 |
20140041222 | METHOD FOR MANUFACTURING VALVE TRAIN PARTS USING METAL POWDER INJECTION MOLDING - Disclosed is a method for manufacturing a plurality of valve train parts using metal powder injection molding, comprising: obtaining a raw material for injection molding by mixing a metal powder and a binder; forming a formed body by injecting the obtained raw material for injection molding into a mold of a valve train part shape; solvent extracting the formed body; forming a sintered body by debinding and sintering the solvent extracted formed body; sizing processing the sintered body; vacuum carburizing the sizing processed sintered body; and polishing the vacuum carburized sintered body. | 02-13-2014 |
20150337694 | EXHAUST VALVE SPINDLE FOR AN EXHAUST VALVE IN AN INTERNAL COMBUSTION ENGINE - An exhaust valve spindle for an exhaust valve in an internal combustion engine has a shaft and a valve disc at the lower end of the shaft, which valve disc at its upper surface has a seat area. The seat area is of a seat material comprising at least from 34.0 to 44.0% Cr, an aggregate amount of Nb and Ta in the range from at least 2.8 to 6.1%, from 0.3 to 2.0% Ti, at the most 0.2% Al, at the most 0.04% B, at the most 0.8% Fe, at the most 0.04% C, at the most 0.4% Si, and a balance of Ni, where the amount of Ti+Nb+0.5×Ta is in the range from 3.4 to 6.6%, and where the amount of Nb+0.5×Ta is less than 3.0% if the amount of Ti is larger than 1.5%. | 11-26-2015 |
029888410 | Valve guide making | 1 |
20150135532 | LOW LEAKAGE SEAT VALVE GUIDE - An apparatus for setting a clearance has a movable body and a valve guide. A valve body is disposed along the axis of the movable body, and a bore hole is formed in the movable body. The bore hole is formed on the axis and includes a first bore with a first diameter, a receiving surface, and a second bore. A tool having a forward surface is inserted into the bore hole and pressed against the receiving surface. The flow of a fluid between the guide cylinder and the movable body is determined and compared against a standard. If it does not meet the criteria, the force is adjusted and reapplied until it meets the desired value. | 05-21-2015 |
029888420 | Repairing, converting, servicing or salvaging | 1 |
20090113707 | METHOD FOR REFURBISHING A VALVE SEAT IN A FUEL INJECTOR ASSEMBLY - A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto. | 05-07-2009 |
029888450 | Composite or hollow valve stem or head making | 8 |
20090094830 | Valve for Controlling Gas Exchange, Especially in Internal Combustion Engines - A valve for controlling gas exchange, especially in internal combustion engines, comprises, at a valve stem, a stem end and at the other end thereof a valve cone. The valve cone and/or the valve stem are configured as hollow metal elements in such a manner that the hollow elements are entirely or partially filled with a metal foam. The interfaces between the metal and the metal foam are interlinked on the molecular level. | 04-16-2009 |
20120255175 | METHOD FOR PRODUCING HOLLOW ENGINE VALVE - A method for producing a hollow engine valve is disclosed which involves gradually reducing the size of the outer diameter and inner diameter of a hollow shaft of a semi-finished product sequentially inserting the hollow shaft into a plurality of molding holes having different hole shapes so as to gradually extend the length of the hollow shaft, and forming the hollow shaft into a predetermined shape by sequentially performing a drawing process. The semi-finished product is subjected to heat treatment such that the hardness thereof is equal to or less than a predetermined hardness, and the maximum thickness between the hollow shaft and an umbrella portion connected to the bottom edge of the hollow shaft is formed to be thicker than the thickness of the hollow shaft by means of a molding hole of a die which is adjusted to have a specific length and maximum inner diameter. | 10-11-2012 |
20120304464 | METHOD FOR MANUFACTURING HOLLOW ENGINE VALVE - A method for manufacturing a hollow engine valve includes inserting a half-finished hollow shaft section in sequence into die holes which have different hole shapes, and sequentially drawing so as to reduce the outer diameter and the inner diameter of the hollow shaft section and stretch its length in stages. The half-finished product is subjected to heat treatment so that the hardness thereof is lower than or equal to a predetermined level. A shaft end sealing section is formed by increasing the wall thickness of the opening end of the hollow shaft section toward the inside of the opening and the gap in the shaft end sealing section is welded. | 12-06-2012 |
20130019474 | METHOD FOR PRODUCING ENGINE VALVE IN WHICH SODIUM METAL IS SEALED - Provided is a method for producing an engine valve by subjecting a stem portion having a hollow part to a drawing treatment using a series of dies such that the outer diameter and inner diameter of the stem portion become smaller in steps and the stem portion is thereby molded to the desired size, whereby, after the stem portion has been subjected to the drawing treatment until the inner diameter of the hollow part of the stem portion has reached a specific size, sodium metal in the form of a solid block is introduced to the hollow part of the stem portion, and a protective agent made from solid paraffin or naphthalene is also introduced to the hollow part of the stem portion such as to foam a barrier between the sodium metal and the atmosphere, after which the stem portion is further subjected to a cold drawing treatment. | 01-24-2013 |
20140360014 | METHOD FOR PRODUCING A BUILT HOLLOW VALVE OF AN INTERNAL COMBUSTION ENGINE - A method for producing a hollow valve of an internal combustion engine may include providing a valve stem and a valve disc having a valve bottom and a valve cone; placing the valve bottom centrally in a mounting of an assembly device; holding the valve stem via a holding device; concentrically placing the valve stem onto the valve bottom and rotating the valve stem together with the valve bottom; welding the valve stem to the valve bottom; pushing the valve cone over the valve stem until the valve stem contacts the valve bottom; welding the valve cone together with the valve bottom; and welding the valve cone together with the valve stem. | 12-11-2014 |
029888451 | Including forging | 2 |
20140283384 | METHOD OF MANUFACTURING A VALVE FOR AN INTERNAL COMBUSTION ENGINE - A method of manufacturing a valve for an internal combustion engine, comprises: (i) a primary step of forging a bulging portion at one end of a rod material to form a generally disk-shape valve head of the valve having a tapered periphery; (ii) an thickness adjustment step of machining an excessively thick portion of the valve head; and (iii) a secondary step of forging a peripheral region of the valve head to create radial slip deformations therein to form a valve face of the valve head. In the step of thickness adjustment, only the front end of the disk-shape valve head is machined without harming dense grain flow lines induced in the tapered face ( | 09-25-2014 |
20140366373 | METHOD FOR PRODUCING A HOLLOW ENGINE VALVE - The present invention provides a method for producing a hollow engine valve, with which the production process can be simplified and the processing precision can be improved. To this end, the present invention provides a method for producing a hollow engine valve ( | 12-18-2014 |
029888453 | Including casting | 1 |
20080313898 | Magnesium throttle body and method of manufacturing the same - A magnesium-based throttle body is disclosed. The throttle body is manufactured by using a mold for manufacture of a throttle body. The throttle body includes a cooling water tube fixing portion into which a cooling water tube is press-inserted, the cooling water tube fixing portion being formed integrally with the throttle body. | 12-25-2008 |
029888460 | With assembly or composite article making | 1 |
20120285015 | RETAINER ASSEMBLING APPARATUS AND RETAINER ASSEMBLING METHOD - This invention provides a retainer assembling apparatus which assembles a retainer to a valve stem via a cotter which engage with an engaging groove formed on the valve stem. The cotter comprises a pair of cotter segments. The apparatus includes a cylindrical body, a holding portion which holds the retainer contacting a lower end of the cylindrical body, a push-up shaft which pushes up the pair of cotter segments into the cylindrical body, and an axial body which is arranged in the cylindrical body to be coaxial with the push-up shaft and to be coaxially movable. The cylindrical body includes a tapered inner circumferential portion on an inner circumferential wall lower portion thereof. | 11-15-2012 |