Port Huron, MI, United States
Port Huron, MI, United States

Time filter

Source Type

Patent
Federal Mogul Corporation | Date: 2016-11-11

A power cylinder assembly for an internal combustion engine includes a cylinder wall that surrounds a cylinder bore that extends along an axis. A piston assembly is positioned in the cylinder bore, and the piston assembly has a combustion surface that divides the cylinder bore into a combustion chamber on one axial side of the combustion surface and a crank case on an opposite axial side of the combustion surface. The combustion surface is partially defined by a first upper surface of a first piece and partially defined by a second upper surface of a second piece. The second piece is moveable relative to the piston body during operation of the power cylinder assembly to change a compression ratio of the power cylinder assembly.


Patent
Federal Mogul Corporation | Date: 2017-01-23

A sliding element, such as a piston ring, including a substrate, base coating, and relatively thin sliding coating is provided. The base coating is typically applied to a running surface of the substrate by PVD, CVD, galvanic deposition, electrodeposition, or a thermal spray process. The sliding coating includes a polymer matrix and hard particles disposed throughout the matrix. The sliding coating is applied to the base coating when the base coating is still in its as-applied condition and has a surface roughness of at least 4.0 m. During use of the sliding element, the thin sliding coating acts as a sacrificial run-in layer. In addition, as the polymer matrix of the sliding coating wears away, the hard particles polish the rough surface of the base coating. Thus, polishing or lapping of the as-applied base coating prior to use of the sliding element is not required.


A powder metal steel alloy composition for high wear and temperature applications is made by water atomizing a molten steel alloy composition containing C in an amount of at least 3.0 wt %; at least one carbide-forming alloy element selected from the group consisting of: Cr, V, Mo or W; an O content less than about 0.5 wt %, and the balance comprising essentially Fe apart from incidental impurities. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming element(s) to oxidize during water atomization. The alloy elements are thus not tied up as oxides and are available to rapidly and readily form carbides in a subsequent sintering stage. The carbon, present in excess, is also available for diffusing into one or more other admixed powders that may be added to the prealloyed powder during sintering to control microstructure and properties of the final part.


Patent
Federal Mogul Corporation | Date: 2016-09-26

A method for roll-forming a tubular member is provided. The method includes providing a roll-forming machine having a pair of rollers and a forming roller adjacent the pair of rollers. Further, cutting a strip of sheet metal to form a segment having free leading and trailing ends extending between a predetermined length; feeding the segment between the pair rollers; calculating the thickness of the segment via feedback from the pair of rollers; automatically adjusting the position of the forming roller in response to the determined thickness of the segment; advancing the segment between the pair of rollers and against the forming roller to form an annulus; and forming a weld joint between the free ends.


Patent
Federal Mogul Corporation | Date: 2016-12-23

The cylinder head gasket includes a gasket layer which presents an inner periphery that surrounds an opening. The gasket layer has a first thickness adjacent the inner periphery. A combustion seal is positioned in the opening and extends circumferentially around an axis. The combustion seal is joined with the inner periphery of the gasket layer. The combustion seal has a height that is greater than the first thickness of the gasket layer. The combustion seal includes at least one seal body which is generally C-shaped as viewed in cross-section and is resiliently flexible for maintaining fluid tight seals with the cylinder head and the engine block. The C-shaped seal body presents a pocket which faces away from the inner periphery of the of the gasket layer for receiving combustion gasses during use to improve the fluid tight seals established with the cylinder head and the engine block.


A piston for a high temperature internal combustion engine is provided. The piston includes an upper wall, base wall, outer rib, and inner rib defining a cooling chamber therebetween, and a plurality of ring grooves formed in the outer rib. Only the second ring groove is formed with the keystone cross-section, and all of the other ring grooves are formed with the conventional rectangular cross-section. Thus, the piston can be formed with low manufacturing costs and can also provide exceptional performance when used in high temperature combustion engines, wherein the temperature at the first ring groove is greater than 280s C, and thus prevents carbon from depositing or bums off any carbon deposits, but the temperature at the second ring groove is between 200 C and 280 C, in which case carbon deposits can form and cause the piston ring to stick.


Patent
Federal Mogul Corporation | Date: 2016-11-15

A steel piston achieving increased thermal brake efficiency in an internal combustion engine is provided. The piston includes a crown presenting a combustion surface, an outer side wall depending from the combustion surface, an outer cooling gallery, and an undercrown cooling gallery. The outer cooling gallery extends circumferentially along the outer side wall beneath the combustion surface. According to one embodiment, the outer cooling gallery is sealed and filled with air, argon, helium, xenon, or carbon dioxide as a cooling media. In this embodiment, the undercrown cooling gallery is filled with air as a cooling media and includes an open inlet hole having a diameter being from 2% to 4% of an outer diameter of the piston. Alternatively, the undercrown cooling gallery is filled with air, argon, helium, xenon, or carbon dioxide as a cooling media, and the inlet hole is sealed.


Patent
Federal Mogul Corporation | Date: 2017-01-26

A method of manufacturing a spark plug (20) for being threaded into a cylinder head (28) of an internal combustion engine is provided. The spark plug (20) includes a shell (24) with threads (26) disposed at a predetermined rotational position (a) relative to a shell outer surface (64) and ground electrode (34). The position of the threads (26) relative to the ground electrode (34) places the ground electrode (34) in a desired position in the combustion chamber (22) and relative to components of the engine, thus allowing the ground electrode (34) to provide a robust and reliable ignition. When multiple spark plugs (20) are formed, the threads (26) in each of the shells (24) are repeatedly and accurately formed at the predetermined rotational position (a) by locating the ground electrode (34), threads (26), and dies (76) of a thread forming apparatus (102) in specific locations.


A component for exposure to a combustion chamber of a diesel engine and/or exhaust gas, such as a cylinder liner or valve face, is provided. The component includes a thermal barrier coating applied to a body portion formed of steel. A layer of a metal bond material is first applied, followed by a gradient structure including a mixture of the metal bond material and a ceramic material, followed by a layer of the ceramic material. The ceramic material includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by thermal spray or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/mK.


A piston for a diesel engine is provided. The piston includes a thermal barrier coating applied to a crown formed of steel. A layer of a metal bond material is first applied to a combustion surface of the crown, followed by a gradient structure including a mixture of the metal bond material and a ceramic material, followed by a layer of the ceramic material. The ceramic material includes at least one of ceria, ceria stabilized zirconia, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by a thermal spray process or HVOF. The thermal barrier coating has a porosity of 2% by vol. to 25% vol., based on the total volume of the thermal barrier coating, a thickness of less than 1 mm, and a thermal conductivity of less than 1.00 W/mK.

Loading Federal Mogul Corporation collaborators
Loading Federal Mogul Corporation collaborators