With Means For Mounting Coating Or Liner Patents (Class 123/669)
  • Patent number: 10302013
    Abstract: A composite thermal barrier and methods of applying the composite thermal barrier to a metallic surface within a combustion chamber of an engine. The composite thermal barrier includes at least one metallic support structure, a metallic skin, and an insulation material. The metallic support structure is connected to a metallic surface within the combustion chamber of the engine. The metallic skin is disposed adjacent to the metallic support structure to define a void space between the metallic skin and the metallic surface. The insulation material is contained within the volume to form the composite thermal barrier.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: May 28, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Dana Craig Bookbinder, Roy Joseph Bourcier, William Edward Lock, Richard Curwood Peterson, Irene Marjorie Slater, Pushkar Tandon, Christopher John Warren
  • Patent number: 9926866
    Abstract: An exhaust gas recirculation (EGR) flow correction system and method are disclosed for an engine air system with air and EGR inputs to a mixer. The system includes three temperature sensors to measure temperatures of the air input, EGR input, and mixer output; and an air system model computing EGR flow corrections using the three temperatures. Air system can include intake manifold, charge air cooler (CAC), air throttle, EGR cooler and EGR valve, with first sensor between CAC and air throttle, second sensor between EGR cooler and EGR valve, third sensor in intake manifold. Air system model can estimate mass flows through air and EGR inputs, estimate intake manifold temperature at third sensor, estimate intake manifold temperature error, and compute EGR corrections based on temperature error. Air system model can estimate CAC and EGR cooler outlet temperatures, and mixer input temperature.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: March 27, 2018
    Assignee: Deere & Company
    Inventors: John L. Lahti, Michael J. Maney, Dustin W. Ridenour, Michael J. Pipho
  • Patent number: 9587740
    Abstract: A repaired piston includes a crown composed of base and welding filler materials, and having an annular rim extending around a combustion bowl. A finite number of repaired defects are within the annular rim, and have a spatial distribution limited by a multidirectional spacing parameter, and a size distribution limited by a unidirectional sizing parameter.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: March 7, 2017
    Assignee: Caterpillar Inc.
    Inventors: Kegan Luick, Thomas Parnell, Aaron Claver, Jon Shumaker, Donald Clark
  • Patent number: 9581104
    Abstract: A steel piston for an internal combustion engine may include a piston crown and a protective layer disposed on the piston crown. The protective layer may include an adhesion layer of Cr or CrN, which is present on a surface of the piston crown. The protective layer may include a functional layer, which is present on the adhesion layer. The functional layer may have at least one of (i) at least one layer (A) of CrN and (ii) at least one layer (B) of CrOn in the form of [(A)/(B)]a, and a may represent 1 to 100.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: February 28, 2017
    Assignees: Mahle International GmbH, Oerlikon Surface Solutions AG, Pfäffikon
    Inventors: Monika Lehnert, Reinhard Rose, Juergen Ramm, Beno Widrig
  • Patent number: 9506420
    Abstract: An engine control system for a vehicle includes an exhaust gas recirculation (EGR) rate-estimation module and a control module. The EGR rate-estimation module receives a first signal indicating a first relative humidity of a flow of air and a second signal indicating a second relative humidity of a mixed flow of air and exhaust gas. The EGR rate-estimation module determines an estimated EGR rate based on the first relative humidity and the second relative humidity, wherein the estimated EGR rate corresponds to a flow rate of a flow of exhaust gas to an engine. The control module selectively adjusts an engine operating parameter based on the estimated EGR rate.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: November 29, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Vijay Ramappan, Darrell W. Burleigh, Gerald W. Fly
  • Patent number: 9476450
    Abstract: A bearing block assembly in an engine is provided. The bearing block assembly includes at least one bearing block to rotatably support an oil lubricated shaft and fastening apparatus to attach the at least one bearing block to a flat mounting surface on a large engine component and a thermal barrier positioned between the shaft and the flat mounting surface configured to reduce the loss of heat to the large engine component from oil used to lubricate the shaft.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: October 25, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Ian Graham Pegg, Robert Helle-Lorentzen, Nigel Philip Harold Fawcett, Roland Paul Stark
  • Patent number: 8978620
    Abstract: An apparatus includes an internal combustion engine with an engine block and a cylinder liner housing a piston. The engine block includes at least one cylinder cavity and at least one replaceable cylinder liner positioned within the cylinder cavity. At least two press fit areas create an interference fit between the engine block and the replaceable cylinder liner. One press fit area is located proximate to the top surface of the engine block and the other press fit area is located in the engine block at the opposite end of the cylinder liner. A storage volume is formed between the press fit areas by the outer surface of the cylinder liner and the surface of the engine block defining the cylinder cavity.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: March 17, 2015
    Assignee: Cummins Inc.
    Inventors: Aaron S. Quinton, Jerl J. Purcell, Nathaniel Hassall, Steven M. Chapman, Jim D. Kahlenbeck
  • Publication number: 20130206124
    Abstract: An apparatus includes an internal combustion engine with an engine block and a cylinder liner housing a piston. The engine block includes at least one cylinder cavity and at least one replaceable cylinder liner positioned within the cylinder cavity. At least two press fit areas create an interference fit between the engine block and the replaceable cylinder liner. One press fit area is located proximate to the top surface of the engine block and the other press fit area is located in the engine block at the opposite end of the cylinder liner. A storage volume is formed between the press fit areas by the outer surface of the cylinder liner and the surface of the engine block defining the cylinder cavity.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Inventors: Aaron S. Quinton, Jerl J. Purcell, Nathaniel Hassall, Steven M. Chapman, Jim D. Kahlenbeck
  • Patent number: 8091537
    Abstract: An apparatus and method for improving performance in an internal combustion engine includes texturing on an inner surface of at least a portion of an engine head. The texturing may include elongated raised portions extending in one or more directions that may aid in controlling and directing pre-combustion and/or combustion gases in a combustion chamber for a more unified combustion. The result is improved power and/or efficiency.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: January 10, 2012
    Inventors: Kelsey Manning, James Rex Larsen
  • Patent number: 7753023
    Abstract: 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.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: July 13, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Toshihiro Takami, Kouhei Hori, Takeshi Tsukahara, Noritaka Miyamoto, Masaki Hirano, Yukinori Ohta, Satoshi Yamada, Kouhei Shibata, Nobuyuki Yamashita, Toshihiro Mihara, Giichiro Saito, Masami Horigome, Takashi Sato
  • Patent number: 7191770
    Abstract: An engine is made by providing a layer of material between the outer surface of a cylinder liner and the inner surface of the cylinder opening within an engine block. The material can be a polymer or a ceramic. Polyether ether ketone or polyethylene terephthalate can be a polymer used for these purposes. Zirconia or yttria can be ceramic used for these purposes. An electro-deposited paint can serve as the layer of thermally insulative material.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: March 20, 2007
    Assignee: Brunswick Corporation
    Inventors: Kevin R. Anderson, Eric S. Mueller, Christopher J. Misorski, Mitesh B. Sheth
  • Patent number: 7073492
    Abstract: A light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: July 11, 2006
    Assignees: Atz-Evus Applikations-Und Technikzentrum, Hyrdro Aluminium Deutschland GmbH
    Inventors: Dietmar Hoffmann, Josef Steibl, Frank Dornenburg, Markus Nolte, Achim Sach, Berthold Aumuller, Klaus Dotzler
  • Patent number: 6886548
    Abstract: An internal combustion engine having a cylinder and a piston movable in the cylinder, the cylinder and piston defining a combustion chamber enclosed by the cylinder and the piston, a surface of at least one of at least one component of the combustion chamber and an adjoining space that comes into contact with at least one of a fuel-air mixture to be combusted and with motor oil has, at least in certain areas, a catalytic coating for oxidizing carbonization residues, the coating consists of a ternary vanadium oxide compound and at least one other compound of at least one metal oxide, the metal oxide is at least one of the group consisting of a cerium oxide, an oxide of another rare-earth metal, an oxide of lanthanum (La), and an oxide of a transition metal.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: May 3, 2005
    Assignees: Volkswagen AG, O.M.T. GmbH
    Inventors: Gerrit Suck, Günter Söhlke, Detlev Repenning
  • Patent number: 6866031
    Abstract: An internal combustion engine, especially an Otto engine, with intake valves and with a fuel injector, which is arranged and designed so that it injects the fuel directly into a combustion chamber of working cylinders of the internal combustion engine. At least in the region of the neck, the intake valves have a surface that is designed to counteract the formation of carbon deposits.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: March 15, 2005
    Assignee: Volkswagen, AG
    Inventors: Leo Spiegel, Günter Sōhlke, Gerrit Suck
  • Patent number: 6655369
    Abstract: A coating and coating process to improve the efficiency of hydrocarbon fueled engines, wherein the coating includes a high percentage of nickel to create a reaction which improves the combustion efficiency of the hydrocarbon fuel. The coating may also include chromium, iron, and other constituents and is applied to combustion surfaces with a sufficient bonding strength to allow the coating to function in the combustion chamber, while providing a surface having sufficient surface roughness to promote the chemical reaction underlying the combustion efficiency improvement. The nickel causes a catalytic cracking reaction to ease the combustibility of hydrocarbon molecules in the fuel.
    Type: Grant
    Filed: August 1, 2001
    Date of Patent: December 2, 2003
    Assignee: Diesel Engine Transformations LLC
    Inventors: Lionel M. Gillston, Ronald P. Pacitti, Richard D. Pacitti
  • Patent number: 6585832
    Abstract: The present invention relates to an improved method for the manufacture of aircraft engine cylinder barrels to prevent their premature failure due to hairline cracks or specks thought to be caused by caustic stress corrosion cracking during black oxide treatment. Machined aircraft cylinder barrels immersed into a black oxide chemical bath composed of a solution containing about 60% sodium hydroxide, about 0% sodium nitrate, and about 40% sodium nitrite most effectively prevents specks and hairline cracks. Since residual stresses from machining also contribute to the probability that specks or hairline cracks will occur during black oxide treatment, the maximum selected number of cylinder barrels essentially free of detectible specks or hairline cracks determines the maximum number of cylinder barrels to be machined on a given set of tool bits.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: July 1, 2003
    Assignee: Textron Limited
    Inventor: Yoon Sam Kim
  • Patent number: 6286210
    Abstract: Surface activation is intended to ensure that a cylinder liner can be anchored in the casting material of a light-metal crankcase with greater bonding. For surface activation, the surface of the cylinder liner is roughened mechanically. Advantageously, copper particles are also implanted into the treated surface. It is necessary to ensure that the time span between surface activation and casting-in is short. Moreover, the activated surface, as far as possible, should not be touched by hand.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: September 11, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Franz Rückert, Peter Stocker
  • Patent number: 5404639
    Abstract: Engine components are thermally insulated with composite layers for improved engine efficiency. A metallic insulation layer is affixed to the metallic substrate of each component, and a layer of heat and corrosion resistant metal overlies and is bonded to the insulation layer. One preferred embodiment incorporates a preformed sheet layer of stainless steel sintered to a layer of metallic insulation attached to the component body substrate. An alternate embodiment incorporates a plasma-sprayed stainless steel layer over the insulation layer. A preferred process for making the engine component includes casting the component body in a mold containing a preformed insulation composite formed of a layer of stainless steel sheet sintered to a layer of metallic insulation.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: April 11, 1995
    Assignee: Dana Corporation
    Inventor: William D. Guenther
  • Patent number: 5371944
    Abstract: Engine components are thermally insulated with composite layers for improved engine efficiency. A metallic insulation layer is affixed to the metallic substrate of each component, and a layer of heat and corrosion resistant metal overlies and is bonded to the insulation layer. One preferred embodiment incorporates a preformed sheet layer of stainless steel sintered to a layer of metallic insulation attached to the component body substrate. An alternate embodiment incorporates a plasma-sprayed stainless steel layer over the insulation layer. A preferred process for making the engine component includes casting the component body in a mold containing a preformed insulation composite formed of a layer of stainless steel sheet sintered to a layer of metallic insulation.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: December 13, 1994
    Assignee: Dana Corporation
    Inventor: William D. Guenther
  • Patent number: 5260116
    Abstract: Ceramic materials to be insert-cast are disclosed, which each contain not less than 65% by volume of aluminum titanate as a crystalline phase, and have an average particle diameter of crystals thereof being not less than 10 .mu.m, Young's modulus of 50 to 2,000 kgf/mm.sup.2, compression strength of 5 to 40 kgf/mm.sup.2, and porosity of 5 to 35%. Ceramic port liners are also disclosed, which are free from cracking due to compression force during insert-casting, peeling-off during use, and facilitate insert-casting. To attain this, a reinforcement which meets either one or both of requirements that differences in coefficient of thermal expansion at 800.degree. C. and Young's modulus between the reinforcement and a material constituting the port liner body are in a range of .+-.0.1% and in a range of .+-.1,000 kgf/mm.sup.2, respectively, is filled into a depressed portion at an outer peripheral surface of the port liner body to form an integrated structure with a flat or swelled surface.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: November 9, 1993
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshiyuki Hamanaka, Takashi Harada, Fumio Hattori
  • Patent number: 5222295
    Abstract: A method and apparatus for restoring the dimensions of a worn engine cylinder block (11) to "as new" condition by the selective removal of spaced portions (20) and (30) of the cylinder block (11) followed by the replacement of the removed portions by specially contoured inserts (40) and (50) by an insert tool (70) that disposes the inserts (40) and (50) in a press-fit relationship in the cavities (20) and (30) formed by the removal process.
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: June 29, 1993
    Inventor: John W. Dorris, Jr.
  • Patent number: 5183025
    Abstract: An engine block for an internal combustion engine including at least one bore, and a cylindrical liner that is pressed into the bore to define the inner cylindrical surface along which the piston reciprocates. The inner surface of the bore and the outer surface of the liner are each coated with a zinc or zinc alloy coating that is metallurgically bonded to the respective surfaces to form intermetallic bonds. The liner is pressed into the bore while the liner and bore are at an elevated temperature approximately corresponding to the melting temperature of zinc, in order to unite the liner and block by means of a metallurgical bond. The metallurgical bond is substantially continuous to provide a continuous metallic path for improved heat transfer and structural strength between the liner and the block material. The liner can be formed either from cast iron or from an aluminum alloy, and the engine block is preferably cast from an aluminum alloy.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: February 2, 1993
    Assignee: Reynolds Metals Company
    Inventors: John L. Jorstad, Richard A. Morely, William H. Overbagh
  • Patent number: 4986230
    Abstract: Method of bonding cylinder liners to cylinder bore walls, comprising: (a) inserting a cylindrical work hardenable liner into a complementary sized cylindrical bore wall of the block, with a uniform annular radial spacing therebetween of about 0.005 inch; and (b) forcing a nondeformable mandrel throughout the interior length of the cylindrical liner to uniformly circumferentially expand the radially outer surface of the liner into full annular surface-to-surface heat exchange relationship with the interior surface of the bore wall, the mandrel having a cross-sectional radius greater than the interior radius of the liner by a dimension which is at least 0.001 inch in excess of such radial spacing. Preferably, the cylindrical liner is comprised of steel having a ductility of at least 30%, a hardness of at least 35 HRB, and a wall thickness in the range of 0.050-0.250.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: January 22, 1991
    Assignee: Ford Motor Company
    Inventors: James R. Panyard, Benjamin P. Winter
  • Patent number: 4941439
    Abstract: An arrangement in combustion chamber surfaces of an internal combustion engine, wherein these surfaces exhibit at least partially a thin surface layer (2) which will influence the octane/cetane rating requirement of the engine in a manner to limit the knocking tendency of the engine. The surface layer (2) comprises a material of low reflectivity and high absorptivity in respect of electromagnetic waves having a wavelength of up to at least 7 .mu.m. The surace layer (2) has located therebeneath a layer (3) which functions as a transient heat buffer and alternately absorbs heat from and emits heat to the surface layer (2).
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: July 17, 1990
    Assignee: Oktan AB
    Inventor: Jan Wicen
  • Patent number: 4862865
    Abstract: A thermal insulating material for combustion engine components, which are subjected to combustion gases, e.g. pistons. The insulation consists of a metal layer sintered under low pressure so as to have a porosity of about 25-50% and which is bonded to the engine component by casting of the component onto the porous sintered layer. The exposed or wear-receiving surface of the sintered layer is machined, which not only achieves accurate dimensioning but also closes the pores of the surface.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: September 5, 1989
    Assignee: AB Volvo
    Inventors: Lars M. G. Dahlen, Lars E. Larsson, Bo L. A. Othzen
  • Patent number: 4791896
    Abstract: In an internal combustion type engine having a piston disposed within a cylinder, a plurality of ceramic cylinder inner surface sections are provided for covering surfaces of the cylinder chamber and the piston which are directly exposed to the ignited combustion gases as the piston travels through its stroke. Same are for the protection of the metal structure of the engine from exposure to the heat generated within the cylinder.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: December 20, 1988
    Inventor: Howard Bidwell
  • Patent number: 4776309
    Abstract: In a spark-ignition internal combustion engine of the type having a combustion chamber which presents at least one surface area on which there is applied at least one layer which presents to the combustion chamber a layer defining surface having very low reflectivity to electromagnetic waves in the wavelength range of about 0.2-7.0 microns. The layer reflects non-absorbed incident waves in a diffuse fashion, thereby to reduce the octane number requirement of the engine. The total surface area thus treated for each combustion chamber of the engine is equal to at least 10% of the top surface area of the piston in said chamber. The overall efficiency of the engine can be further improved when at least one of the layers has an underlying defining surface distal from the combustion chamber which reflects substantially all incoming electromagnetic waves in the wavelength range above 2.5 microns in a diffuse fashion.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: October 11, 1988
    Assignee: Oktan AB
    Inventors: Jan Wicen, Lennart Forslund, Raoul Niklasson
  • Patent number: 4774917
    Abstract: An internal combustion engine includes a cylinder block, a piston and a piston ring. The cylinder block includes at least one cylinder bore which includes a cylinder bore surface. The piston is located within the cylinder bore of the cylinder block so as to be displaceable upwardly and downwardly in the longitudinal direction of the cylinder bore. The piston includes at least one annular groove which has at least one inclined surface such that a bottom of the annular groove is located lower than an outer edge of the annular groove. The piston ring includes an outer peripheral portion and an inner peripheral portion. The inner peripheral portion of the piston ring is located within the annular groove of the piston for sliding engagement with the inclined surface of the annular groove of the piston.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: October 4, 1988
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Noriyuki Tokoro
  • Patent number: 4711208
    Abstract: In a piston for internal combustion engines the piston head is formed with a combustion chamber recess and is provided with a heat-insulating layer of ceramic material. To minimize the heat to be dissipated to the coolant, one part of the heat-insulating layer consists of a solid ceramic insert and the other part consists of a ceramic coating.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: December 8, 1987
    Assignee: Kolbenschmidt AG
    Inventors: Wilfried Sander, Siegfried Mielke
  • Patent number: 4662331
    Abstract: A precombustion chamber construction of an internal combustion engine includes an upper ceramic body and a lower ceramic body abutting thereagainst to form a precombustion chamber communicating through an injection hole with a main combustion chamber. According to the invention at least a portion of abutting surfaces of the upper and lower ceramic bodies is inclined relative to a plane perpendicular to a longitudinal axis of the precombustion chamber, thereby preventing any relative rotative movement of the upper and lower ceramic bodies even if they are subjected to rotating forces caused by vibrations of the engine or explosion of fuel.
    Type: Grant
    Filed: October 10, 1985
    Date of Patent: May 5, 1987
    Assignee: NGK Insulators, Ltd.
    Inventors: Yutaka Ogawa, Takayuki Ogasawara, Shigeru Hanzawa
  • Patent number: 4649806
    Abstract: An integrally cast composite piston assembly is disclosed which is effective to carry a ceramic plate in an iron based cap. The assembly comprises a cylindrical piston body, preferably of aluminum, having a crown top, an annular crown side wall with an upper edge, and an annular undercut surface terminating the crown side wall. The undercut surface must make an angle with a plane extending perpendicular to the axis of the piston, the angle being substantially equal to the arc tangent of H/R where H is the median distance of the undercut surface from the plane and R is the median radius of the undercut surface from the axis of the piston.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: March 17, 1987
    Assignee: Ford Motor Company
    Inventor: Dale L. Hartsock
  • Patent number: 4646692
    Abstract: The invention concerns components for internal combustion engines with heat resistant combustion chamber inserts, especially components made of light metal with casted porous ceramic inserts positioned by casting around the basic material, in which in order to lower the gas pressure which builds up under said inserts (3), at least one gas pressure release bore hole (4,5) is provided in the basic material of the component (1) which leads to the bottom of said insert. The invention further describes a process for the production of these components in which the insert is first fixed in its position relative to the basic element and thereafter the bore holes are produced in the basic material.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: March 3, 1987
    Assignee: Alcan Aluminiumwerk Nurnberg GmbH
    Inventors: Andreas Deuber, Edmund Siegl
  • Patent number: 4612880
    Abstract: The control of the octane requirement increase phenomenon in an internal combustion engine is achieved by introducing into an internal combustion engine, having manifold and/or combustion surfaces which inhibit the formation of engine deposits, along with the combustion charge, a fuel composition containing an octane requirement increase-inhibiting amount of (a) an oil-soluble iron compound and (b) carboxylic acids and/or ester derivatives thereof. In particular the esters of a tertiary alcohol and an unsubstituted, mono-carboxylic acid having at least two carbon atoms, e.g., t-butylacetate, in combination with dicyclopentadienyl iron provides an effective octane requirement increase-inhibiting additive for said internal combustion engine. Preferably the manifold and combustion surfaces of said internal combustion engine are coated with a low density alumina or zirconia coating. More preferably said alumina or zirconia coating further comprises a carbon gasification catalyst, e.g.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: September 23, 1986
    Assignee: Union Oil Company of California
    Inventors: Stephen Brass, Michael C. Croudace, Timothy Wusz
  • Patent number: 4590901
    Abstract: A heat insulated reciprocating component, such as a piston or a valve, for an internal combustion engine comprises a main component body and a ceramic member secured to the body by interference fit with a metal connector which is brazed to the body. In one embodiment, the main body of a piston has an outwardly opening cavity, a ceramic member in the cavity having an annular groove, and a ring seated in the groove and brazed to side of the cavity. In another embodiment, the combustion wall defining face of the valve has a ceramic member mounted thereon, and metal ring in overlapping engagement with the periphery of the member and brazed to the body of the valve. The invention also comprehends the method of making such a component by applying a metal ring in overlapping engagement with the periphery of a ceramic member, mounting a brazing alloy shim on the ring, assembling these parts on the combustion chamber end of the component, and brazing the ring to the component.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: May 27, 1986
    Assignee: GTE Products Corporation
    Inventor: Howard Mizuhara
  • Patent number: 4577611
    Abstract: In a reciprocating internal-combustion engine of a low-temperature catalytic-combustion type, catalyst layers which act at low catalyst temperatures of about 500.degree. C. or downwards to permit combustion of a gaseous air-fuel mixture are formed or secured on the inner wall surfaces of each combustion chamber of the engine, whereby low-temperature catalytic combustion of the air-fuel mixture is made possible in quench layer formed along the inner wall surfaces of each combustion chamber separate from its piston-sliding region, whereby incomplete combustion is prevented, a regular operation is made possible even with a dilute gas mixture having air-fuel ratio exceeding the limit of misfire in the conventional engines, the fuel efficiency is enhanced and the reduction in hydrocarbon, CO and NOx in exhaust gas is attained as well.
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: March 25, 1986
    Inventor: Shigeo Hagino
  • Patent number: 4550707
    Abstract: A method and apparatus for improving the performance of an internal combustion engine in which a piston (10) has a hollow head (11) within the cavity of which there is mounted an open topped frusto-conical bulbous casing (13), the opening of which is covered with a mesh (14) preferably welded to its rim (15). The casing-mesh unit is attached by means of spacers (16) preferably comprising pins (17) and (21) in such a way that a space is formed between the convex exterior walls of the casing (13) and the concave interior walls of the cavity (12) of the piston head (11).
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: November 5, 1985
    Inventor: Alain Kervagoret
  • Patent number: 4538562
    Abstract: The disclosed engine part uses an integral combination of a ceramic member and a metallic member, which ceramic member has a metallized layer formed on one side surface thereof, and a metallic buffer is bonded to the metallized layer so as to be disposed between the ceramic member and the metallic member.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: September 3, 1985
    Assignee: NGK Insulators, Ltd.
    Inventors: Minoru Matsui, Nobuo Tsuno
  • Patent number: 4530341
    Abstract: Improved heat insulating of a combustion chamber in an internal combustion engine is obtained by providing a heat-resistant body in at least one surface, which is intended to at least partly limit a combustion chamber. A support body supports the heat-resistant body, said bodies each having facing mantle surfaces. Between said bodies there is a heat-insulating element of a material having a lower coefficient of thermal expansion and a lower modulus of elasticity than the material in either one of said bodies. The bodies and the element are held together at the mantle surfaces by means of a shrink fit.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: July 23, 1985
    Assignee: Saab-Scania Aktiebolag
    Inventor: Bengt N. J. Palm
  • Patent number: 4530340
    Abstract: The combustion zone of an internal combustion engine is provided with a catalyst which is incorporated in the combustion zone as a thin layer placed on the internal cylinder walls and/or the top surface of the piston and/or on surfaces of the spark plug which are exposed to the combustion zone of the cylinder for the purpose of cracking the carbon-carbon bonds in the heavier fuel molecules immediately prior to combustion within the combustion zone of the cylinder. The light fuel molecules produced during fuel contact with the catalyst yields a more complete combustion and extraction of the exothermic energy, thereby increasing fuel economy and decreasing the amounts of incomplete combustion products leaving the exhaust. The catalysts for use in the present invention include acidic metal oxide mixtures.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: July 23, 1985
    Inventor: Millard C. Totman
  • Patent number: 4528950
    Abstract: A cylinder casing for use in internal combustion engines having a reciprocating piston is provided having strip-shaped hardened zones along the inner wall of the cylinder which are disposed in such a manner as to impart rotational movement to piston rings relative to the piston sliding within that cylinder.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: July 16, 1985
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Kurt Oblander, Wolfram Dahm
  • Patent number: 4524732
    Abstract: In a cylinder head (1) of a piston engine, a thermal insulation component having openings for the accommodation of valve seats, spark plugs, and injection nozzles consists of a circular aluminum titanate plate (2) which is shrink-fitted into a planar circular ring of zirconium oxide (12) gripped or shrink-fitted in the cylinder head. The circular plate (2) of aluminum titanate forms the greatest part of the cylinder head bottom (9).
    Type: Grant
    Filed: March 1, 1984
    Date of Patent: June 25, 1985
    Assignee: Feldmuhle Aktiengesellschaft
    Inventors: Ulf Dworak, Hans Olapinski, Dieter Fingerle, Ulrich Krohn, Martti J. A. Hakulinen, Bengt N. J. Palm
  • Patent number: 4524498
    Abstract: A method is disclosed of modifying a conventional internal combustion engine to accept ceramic material. A cast iron extension mamber is metallurgically joined to the cast iron engine block, the extension member having a wall defining a bore opening aligned with and larger than the bore opening of the engine block. The extension member has a height substantially equal to or greater than the axial stroke of the piston. The diameter of the upper portion of the wall, defining the bore opening in the engine block, is enlarged to define an annular shoulder; the shoulder has an outer surface substantially axially aligned with the wall defining the bore opening in the extension member. A cylindrical ceramic liner, such as zirconia or alumina, is attached within the wall of the bore opening of the extension member by use of a high strength metallic sleeve which is fitted along the outer surface of the shoulder. The ceramic liner has an internal surface aligned with the wall of the bore opening in the engine block.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: June 25, 1985
    Assignee: Ford Motor Company
    Inventor: Dale L. Hartsock
  • Patent number: 4513703
    Abstract: A reciprocating piston internal combustion engine, each cylinder of which is provided at the connection point of light metal cylinder head and cylinder sleeve with a sealing element. On that surface which is directed toward the combustion chamber, the sealing element is provided with a heat insulating layer. This heat insulating layer serves for thermal insulation of the sealing surfaces of the light metal cylinder head and the cylinder sleeve in order to reduce thermal stresses and radial relative movements resulting from non-uniform thermal expansion characteristics. The end face inner surface of the cylinder sleeve is preferably also thermally insulated.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: April 30, 1985
    Assignee: Klockner-Humboldt-Deutz Aktiengesellschaft
    Inventor: Rolf Eckert
  • Patent number: 4495907
    Abstract: Combustion chamber defining components such as cylinder liners in internal combustion engines are composed of a plurality of metal oxides which combine to impart good wear resistance and thermally insulative characteristics.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: January 29, 1985
    Assignee: Cummins Engine Company, Inc.
    Inventor: Roy Kamo
  • Patent number: 4495684
    Abstract: Ceramic inserts are embedded in thermally highly loaded zones and/or as a heat insulation in light metal castings for use in internal combustion engines.To provide a firm joint between the insert and the light metal, a metallic material which resists creep and/or relaxation is shrunk on the insert before it is embedded.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: January 29, 1985
    Assignee: Karl Schmidt GmbH
    Inventors: Wilfried Sander, Siegfried Mielke
  • Patent number: 4494501
    Abstract: A piston for an internal combustion engine comprises a piston body of aluminium or aluminium alloy and an insert of a ferrous material having a combustion bowl formed therein. The insert is surrounded by the piston body and the outer surface of the insert and the adjacent surface of the piston body are spaced apart at the crown ends thereof to form an annular gap therebetween which opens onto the crown. This insulates the piston body from the insert.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: January 22, 1985
    Assignee: AE PLC
    Inventor: Bruni Ludovico
  • Patent number: 4487175
    Abstract: An aluminum cylinder head for an internal combustion engine has a layer of material of dispersion-hardened sintered aluminum disposed in its bottom wall which forms a combustion chamber wall, the layer comprising an insert or inserts at the sealing surface which delimits the combustion chamber and at the bridge between the intake and exhaust ports in the head for increasing the resistance of the head member to thermal shock at the bridge and for retaining for the sealing surface a high residual hardness at elevated temperatures.
    Type: Grant
    Filed: January 8, 1982
    Date of Patent: December 11, 1984
    Assignee: Kl/o/ ckner-Humboldt-Deutz AG
    Inventor: Robert Krczal
  • Patent number: 4453527
    Abstract: A diesel engine is provided with extenders or spacers attached to those portions of the cylinder block, cylinder head and piston that define the combustion chamber, the extenders being of substantial axial extent and of low thermal conductivity to insulate the components to which they are attached from the combustion chamber while redefining the combustion chamber surfaces.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: June 12, 1984
    Assignee: Ford Motor Company
    Inventor: Wallace R. Wade
  • Patent number: 4413597
    Abstract: An oil cooling system for an internal combustion engine (2) includes a cylinder liner (22) shaped to form an annular oil flow passage (36) by an inner flow control surface (52) and outer flow control surface (56) through which engine lubrication oil flows in a very thin film under laminar flow conditions to produce a very large convective heat transfer coefficient of 300-400 BTU's per hour-feet squared-degree Fehrenheit. To insure laminar flow conditions, the radial thickness of the annular flow passage 36 is held to less than 0.016 inches and is preferably in the range of 0.008 to 0.010 inches. The disclosed liner (22) is very accurately positioned within a cylinder bore (8) of the engine block (4) by liner stop means (68) for retaining the liner in a fixed axial position within the cylinder bore (8) and by inner and outer radial locating means (106 and 101) positioned, respectively, inwardly and outwardly of the inner flow control surface (52).
    Type: Grant
    Filed: May 13, 1980
    Date of Patent: November 8, 1983
    Assignee: Cummins Engine Company, Inc.
    Inventors: John H. Stang, Steven N. Cusick
  • Patent number: 4404935
    Abstract: A ceramic cap is attached to a metal piston by means of intermeshing radial flanges. A spring forces the flanges into contact with one another along an annular surface area. Spaces between the flanges allow for movement between the metal and ceramic parts to accommodate differential thermal expansion, while at the same time permitting secure contact between metal and ceramic.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: September 20, 1983
    Assignee: Kyocera International, Inc.
    Inventor: Edwin H. Kraft