公开(公告)号：US11959436B2

公开(公告)日：2024-04-16

申请号：US17948462

申请日：2022-09-20

Applicant: Tenneco Inc.

Inventor： Norbert Schneider ,  Michael Weinenger ,  Thomas Harris

IPC: F02F3/14

CPC classification number: F02F3/14

Abstract: A piston for an internal combustion engine which includes a crown having spiral features designed to increase swirl of combustion gases in a cylinder of the engine is provided. The spiral features can be located in a combustion surface or in a combustion bowl of the crown. The increased swirl of the combustion gases is expected to improve mixing of the air and fuel injected into the cylinder, and thus cause the fuel to burn more completely, achieve better efficiency out of the injected fuel, and reduce unburned hydrocarbons in the exhaust gas.

公开(公告)号：US11850773B2

公开(公告)日：2023-12-26

申请号：US17994687

申请日：2022-11-28

Applicant: Tenneco Inc.

Inventor： Warran Boyd Lineton ,  Ross Allen Evers ,  Greg Salenbien

IPC: F02F3/12 ,  F02F3/14 ,  B29C43/18 ,  B32B3/06 ,  B29C43/52 ,  F02F3/00 ,  B32B5/00 ,  B32B27/00 ,  B32B15/20 ,  B32B15/18 ,  B32B9/04 ,  B32B7/04 ,  B32B15/16 ,  B32B9/00 ,  B32B5/02 ,  B32B7/05 ,  B32B27/06 ,  B32B15/098 ,  B32B27/42 ,  B32B5/16 ,  B32B15/14 ,  F04B53/14 ,  F02B77/02 ,  F04B39/00 ,  B29K277/00 ,  B29K709/02 ,  B29K101/10 ,  B29K475/00 ,  B29K45/00 ,  B29K105/12 ,  B29K279/00 ,  B29K307/04 ,  B29L31/00 ,  F02F3/26

CPC classification number: B29C43/18 ,  B29C43/52 ,  B32B3/06 ,  B32B5/00 ,  B32B5/02 ,  B32B5/16 ,  B32B7/04 ,  B32B7/05 ,  B32B9/005 ,  B32B9/041 ,  B32B9/045 ,  B32B9/047 ,  B32B9/048 ,  B32B15/098 ,  B32B15/14 ,  B32B15/16 ,  B32B15/18 ,  B32B15/20 ,  B32B27/00 ,  B32B27/06 ,  B32B27/42 ,  F02F3/12 ,  B29K2045/00 ,  B29K2101/10 ,  B29K2105/12 ,  B29K2277/10 ,  B29K2279/00 ,  B29K2307/04 ,  B29K2475/00 ,  B29K2709/02 ,  B29L2031/7494 ,  B32B2260/021 ,  B32B2260/025 ,  B32B2260/046 ,  B32B2262/0269 ,  B32B2262/105 ,  B32B2262/106 ,  B32B2262/14 ,  B32B2264/107 ,  B32B2307/30 ,  B32B2307/304 ,  B32B2307/558 ,  B32B2307/732 ,  B32B2605/00 ,  F02B77/02 ,  F02F3/003 ,  F02F3/0084 ,  F02F3/14 ,  F02F3/26 ,  F02F2003/0061 ,  F04B39/0005 ,  F04B53/14 ,  F05C2203/0869 ,  F05C2225/06 ,  F05C2251/048 ,  F05C2253/12 ,  F05C2253/16 ,  F05C2253/20 ,  F05C2253/24

Abstract: A piston for a heavy duty diesel engine including a composite layer forming at least a portion of a combustion surface is provided. The composite layer has a thickness greater than 500 microns and includes a mixture of components typically used to form brake pads, such as a thermoset resin, an insulating component, strengthening fibers, and an impact toughening additive. According to one example, the thermoset resin is a phenolic resin, the insulating component is a ceramic, the strengthening fibers are graphite, and the impact toughening additive is an aramid pulp of fibrillated chopped synthetic fibers. The composite layer also has a thermal conductivity of 0.8 to 5 W/m·K. The body portion of the piston can include an undercut scroll thread to improve mechanical locking of the composite layer. The piston can also include a ceramic insert between the body portion and the composite layer.

公开(公告)号：US11719184B1

公开(公告)日：2023-08-08

申请号：US17581391

申请日：2022-01-21

Applicant: Tenneco Inc.

Inventor： Warran Lineton ,  Greg Salenbien

IPC: F02F3/28 ,  C23C4/18 ,  F02F3/00 ,  C23C4/11 ,  C23C4/134 ,  C23C4/02 ,  F02F3/10

CPC classification number: F02F3/0084 ,  C23C4/02 ,  C23C4/11 ,  C23C4/134 ,  C23C4/18 ,  F02F3/10 ,  F02F3/28

Abstract: A steel piston with an engineered coating is provided. A high thermal conductivity material, for example copper, is disposed on first regions of a combustion bowl to reduce hot spots in the piston. A low thermal conductivity material, for example a ceramic, is disposed on second regions of the combustion bowl to reduce loss of heat through the piston. The high thermal conductivity material disposed on the combustion bowl has a surface roughness (Ra) of less than 5 μm to help reflect IR radiation and promote fuel flow. The low thermal conductivity material disposed on the combustion bowl has a surface roughness (Ra) of less than 3 μm to promote fuel flow. The low thermal conductivity material is also disposed on the bowl rim and top ring land, and has a surface roughness (Ra) of greater than 8 μm on the bowl rim and top ring land to retard gas flow.

公开(公告)号：US20220411899A1

公开(公告)日：2022-12-29

申请号：US17358858

申请日：2021-06-25

Applicant: Tenneco Inc.

Inventor： David Michael Saxton ,  Andrew R. Zeagler ,  Terri Ann Giroux ,  Michael Wagner ,  Katherine Theresa Vaida

IPC: C22C21/10 ,  B22D11/00 ,  F16C33/12

Abstract: A sliding element, such as a bearing, and a method of manufacturing the sliding element, is provided. The sliding element is formed of an aluminum alloy material which includes zinc in an amount of 5 wt. % to 83 wt. %. The sliding element may also include silicon and/or magnesium. The sliding element is typically formed by casting, heat treating at a temperature of 400° C. to 577° C., and cooling at a rate of less than 50° C. per hour to a temperature ranging from 400° C. to 200° C. The aluminum alloy material is then heat treated at a temperature of 100° to 275° C. for at least 5 hours to form a soft phase consisting essentially of the zinc. The second heat treatment, or possibly both heat treatments, may not be required when the aluminum alloy material includes the magnesium.

公开(公告)号：US20220364643A1

公开(公告)日：2022-11-17

申请号：US17318530

申请日：2021-05-12

Applicant: Tenneco Inc.

Inventor： Daniel J. Dufek ,  Marc Irrgeher

IPC: F16J9/26 ,  C23C28/00 ,  C23C14/06 ,  C25D3/04

Abstract: A coated piston ring for a piston is provided. The piston ring includes a running surface, a flank surface, and a transition surface therebetween. The transition surface curves or extends at an angle between the running surface and the flank surface. A running layer is disposed over the running surface and over at least a portion of the transition surface. A flank layer is disposed over the flank surface and over at least a portion of the transition surface. The running layer is applied by physical vapor deposition, and the running layer is applied by galvanic deposition. The running layer is formed of chromium nitride, and the flank layer is formed of chromium. A portion of the flank layer overlaps and is disposed outward of a portion of the running layer. During operation of the piston, the overlapping portion is spaced from both the piston and the cylinder.

公开(公告)号：US20220260033A1

公开(公告)日：2022-08-18

申请号：US17630733

申请日：2020-01-17

Applicant: Tenneco Inc.

Inventor： Warran Boyd Lineton ,  Gregory Salenbien ,  Michael Weinenger

IPC: F02F3/14 ,  F02F3/22 ,  F02F3/26

Abstract: A piston for an internal combustion engine which is coated for enhanced oxidation protection and/or erosion protection is provided. The piston includes a body formed of an iron-based material. The iron-based material is coated with a superalloy and manganese phosphate. The superalloy is preferably NiCrAlY, NiCrAl, NiCr, CoCrAly, and/or CoNiCrAlY. The manganese phosphate can be disposed on the superalloy, but not between the superalloy and the iron-based material. The superalloy preferably has a thickness of 0.1 to 2.0 mm, a porosity of 1% to less than 5%, and a surface roughness of less than 5 microns Ra. Another component for an internal combustion engine which is coated with the superalloy and the manganese phosphate is also provided.

公开(公告)号：US11365806B2

公开(公告)日：2022-06-21

申请号：US16564852

申请日：2019-09-09

Applicant: Tenneco Inc.

Inventor： Robert Reuven Aharonov ,  Marc Irrgeher

IPC: F16J9/26 ,  C23C14/06

Abstract: A piston ring with a coated outer surface is provided. The coating is disposed on end sections of the outer surface adjacent a gap. Typically, a middle section of the outer surface located between the end sections is not coated. The coating can be formed of CrN or DLC, and the CrN coating can be applied by physical vapor deposition (PVD). The end sections of the outer surface, upon which the coating is applied, are rough. For example, the outer surface can be blasted or otherwise textured to achieve the rough surface. The rough surface retains oil and distributes stress better than a smooth surface, and thus reduces crazing and flaking of the coating.

公开(公告)号：US11060608B2

公开(公告)日：2021-07-13

申请号：US16270215

申请日：2019-02-07

Applicant: Tenneco Inc.

Inventor： Blair Matthew Jenness

IPC: F16J9/26 ,  C23C24/08

Abstract: A piston ring providing improved performance during operation, including reduction in blowby gases and improved oil control, is provided. The piston ring includes an upper layer, a lower layer, and a middle layer each formed from a powder metal material. An exposed sharp first corner is present between an upper ring surface and an upper outer diameter surface, and an exposed sharp second corner is present between a lower ring surface and a lower outer diameter surface. The piston ring also comprises a coating including diamond-like carbon (DLC). The DLC coating is inlaid. Thus, the coating is disposed on the middle layer but is spaced from the upper and lower corners, so that the upper and lower corners of the piston ring are exposed.

公开(公告)号：US10995661B2

公开(公告)日：2021-05-04

申请号：US16725533

申请日：2019-12-23

Applicant: Tenneco Inc.

Inventor： Warran Boyd Lineton ,  Miguel Azevedo ,  Greg Salenbien

IPC: F02B77/11 ,  C23C4/126 ,  C23C4/10 ,  C23C4/18 ,  C23C4/06 ,  C23C4/12 ,  C23C28/00 ,  C23C4/02

Abstract: 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 can be applied first, followed by a mixture of the metal bond material and a ceramic material, optionally followed by a layer of the ceramic material. The ceramic material preferably 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/m·K.

公开(公告)号：US20210071760A1

公开(公告)日：2021-03-11

申请号：US16564852

申请日：2019-09-09

Applicant: Tenneco Inc.

Inventor： Robert Reuven Aharonov ,  Marc Irrgeher

IPC: F16J9/26 ,  C23C14/06

Abstract: A piston ring with a coated outer surface is provided. The coating is disposed on end sections of the outer surface adjacent a gap. Typically, a middle section of the outer surface located between the end sections is not coated. The coating can be formed of CrN or DLC, and the CrN coating can be applied by physical vapor deposition (PVD). The end sections of the outer surface, upon which the coating is applied, are rough. For example, the outer surface can be blasted or otherwise textured to achieve the rough surface. The rough surface retains oil and distributes stress better than a smooth surface, and thus reduces crazing and flaking of the coating.