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：US20230340905A1

公开(公告)日：2023-10-26

申请号：US16325721

申请日：2019-02-15

Applicant: Yong Zhang

Inventor： Yong Zhang

IPC: F02B77/11 ,  F02B77/02 ,  F02F3/14 ,  F02F1/00 ,  F02F3/00

CPC classification number: F02B77/11 ,  F02B77/02 ,  F02F1/004 ,  F02F3/003 ,  F02F3/14 ,  F02F2001/008 ,  F02F2200/02 ,  F05C2251/048 ,  F05C2253/025 ,  F05D2260/221

Abstract: Improving an IC Engine’s thermal efficiency by heat preservation by providing: heat insulation layers to the cylinder, piston crown, combustion chamber and cylinder-head including internal gaps/cavities with or without vacuum; reduced carbonisation of fuel and oil; reduced the thermal shock by exhaust gas recirculation - EGR with control/intake valves, heating and storage tank; improved thermal shock resistance of insulation with flexible/porous thread/fibre and cloth materials bound together by binding with paste, stitching, weaving, braiding or pressed/clamped together; improved distortion resistance using sapphire or tungsten steel; an elongated piston cap or cone; segmented or annular sheet cylinder/liner construction; direct or indirect cooling of fuel injectors with fuel recirculation or spark plugs with high pressure gas jets in pits or slits.

公开(公告)号：US20190061072A1

公开(公告)日：2019-02-28

申请号：US15682813

申请日：2017-08-22

Applicant: Caterpillar Inc.

Inventor： Curtis John Graham ,  Robert E. Sharp ,  Daniel Thomas Cavanaugh ,  Robert Louis Brockman

IPC: B23P6/02 ,  B23P6/04 ,  B23P19/04 ,  F02F3/14 ,  F02B23/06

CPC classification number: B23P6/02 ,  B23P6/04 ,  B23P19/043 ,  C23C4/01 ,  C23C4/18 ,  C23C24/04 ,  F02B23/0627 ,  F02F1/242 ,  F02F3/14 ,  F02F11/00 ,  F02M2200/8076

Abstract: A method for remanufacturing or repairing a cylinder head having a bore configured to receive a fuel injector comprises machining a portion of a surface forming the bore to remove imperfections, inserting a repair component into the bore proximate the machined portion of the bore, and spraying material into the bore proximate the machined portion and the repair component, thereby holding the component into place.

公开(公告)号：US20180128203A1

公开(公告)日：2018-05-10

申请号：US15809358

申请日：2017-11-10

Applicant: CUMMINS INC.

Inventor： David E. Koeberlein ,  J. Steven Kolhouse

IPC: F02F3/14 ,  F02F3/26 ,  F02B75/28 ,  C23C28/04 ,  F02F3/00 ,  F02F3/04

CPC classification number: F02F3/14 ,  C23C28/042 ,  C23C28/3215 ,  C23C28/3455 ,  F01B7/02 ,  F01B7/14 ,  F02B23/06 ,  F02B75/28 ,  F02B75/282 ,  F02F3/0084 ,  F02F3/04 ,  F02F3/22 ,  F02F3/26 ,  Y02T10/125

Abstract: A piston for an opposed-piston engine has a thermal barrier coating on at least the piston crown. The piston, at least the piston crown, is made of titanium or a titanium alloy. The thermal barrier coating includes a bonding material and a ceramic material. The bonding material can be present in the thermal barrier coating at an interface of the thermal barrier coating and the bulk of the piston material. The ceramic material can be a high R-Value material. In particular, the piston with a thermal barrier coating can be an exhaust piston for an opposed-piston engine.

公开(公告)号：US20170350343A1

公开(公告)日：2017-12-07

申请号：US15536808

申请日：2015-10-13

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Masato SASAKI

IPC: F02F3/00 ,  B22C9/10

CPC classification number: F02F3/0084 ,  B22C9/108 ,  C03B19/06 ,  C03C11/007 ,  C03C14/004 ,  C03C2214/08 ,  F02F3/00 ,  F02F3/14 ,  F02F3/26 ,  F02F2200/00

Abstract: This piston includes a low thermal conductivity part comprising: a porous member made of a borosilicate glass that has a lower thermal conductivity than the piston base material made of an aluminum alloy material that is the base material impregnated into the porous member. A molded object obtained from a first powder (glass powder) and a second powder (sodium chloride powder) is put in hot water to dissolve away the second powder and form pores in the porous member. The aluminum alloy material is impregnated into these pores to unite the porous member to the piston base material. Furthermore, varnish containing polyimide, etc. is applied to the upper surface of the porous member and impregnated into the pores with a varnish impregnation device assisted by vacuum drawing and atmospheric pressure, thereby preventing the pores from remaining vacant. Due to this, deterioration in exhaust emission performance can be prevented.

公开(公告)号：US20170321627A1

公开(公告)日：2017-11-09

申请号：US15147398

申请日：2016-05-05

Applicant: MAHLE International GmbH

Inventor： Jason BIENEMAN ,  Nikhil NACHAPPA

IPC: F02F3/14 ,  C09D5/16 ,  C01B21/064 ,  F02F3/26 ,  B05D1/02 ,  B41F15/08 ,  B05D1/18

CPC classification number: F02F3/14 ,  B05D1/02 ,  B05D1/18 ,  B41F15/0895 ,  C01B21/064 ,  C09D5/16 ,  C09D5/1618 ,  C09D5/1662 ,  C09D7/40 ,  F02F3/12 ,  F02F3/26

Abstract: A piston having a piston crown with a combustion chamber, and a circumferential ring belt extending from the piston crown and having a plurality of ring grooves separated by piston lands. At least one of the piston lands, ring grooves or top surface of the crown is provided with a coating comprising hexagonal boron nitride. The coating can be made solely of hexagonal boron nitride, or can additionally include a resin. The coating can be a single layer coating or a multiple layer coating.

公开(公告)号：US20170145951A1

公开(公告)日：2017-05-25

申请号：US14945919

申请日：2015-11-19

Applicant: Caterpillar Inc.

Inventor： Abhishek Malik ,  Brian Applegate

IPC: F02F3/14 ,  F02F3/24

CPC classification number: F02F3/14 ,  F02B23/0627 ,  F02B23/0651 ,  F02B2275/40 ,  F02F3/24 ,  Y02T10/125

Abstract: A piston for an internal combustion engine includes a ring belt extending circumferentially about a longitudinal axis of the piston; a combustion bowl disposed between the longitudinal axis and the ring belt along a radial direction, the radial direction being perpendicular to the longitudinal axis; and a squish face disposed between the combustion bowl and the ring belt along the radial direction. The squish face includes a first textured surface disposed on the squish face, the first textured surface including a first plurality of concave surfaces.

公开(公告)号：US20170145950A1

公开(公告)日：2017-05-25

申请号：US15318006

申请日：2015-06-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideo YAMASHITA

IPC: F02F3/12 ,  F02B17/00 ,  C25D11/02 ,  C25D11/24 ,  C25D11/16

CPC classification number: F02F3/12 ,  C25D11/022 ,  C25D11/04 ,  C25D11/045 ,  C25D11/16 ,  C25D11/246 ,  F02B17/005 ,  F02B23/0621 ,  F02B23/0672 ,  F02B2023/0609 ,  F02B2023/0612 ,  F02F3/14 ,  F02F2200/00 ,  F05C2201/021 ,  F05C2251/048

Abstract: A piston for a diesel engine is prepared as a piston for a direct injection engine, a cavity face of the piston is grinded, and a squish face thereof is masked. Next, a high-purity aluminum coating is formed on the cavity face, and the masking of the squish face is removed and the entire area of the piston top face is subjected to an anodizing treatment. Thereafter, the cavity face is masked, and the squish face is subjected to a sealing treatment.

公开(公告)号：US20170122147A1

公开(公告)日：2017-05-04

申请号：US15296827

申请日：2016-10-18

Applicant: Henkel AG & Co. KGaA

Inventor： Shawn E. Dolan ,  James P. Golding

IPC: F01L3/04 ,  F01N3/10 ,  F02B23/10 ,  F02M35/10 ,  F02B77/04 ,  F02B75/12 ,  F02F3/14 ,  F01N13/10 ,  F02B77/02

CPC classification number: F01L3/04 ,  C25D7/04 ,  C25D9/12 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2820/01 ,  F01N3/10 ,  F01N3/18 ,  F01N13/10 ,  F01N2510/06 ,  F01N2530/06 ,  F01N2570/10 ,  F01N2570/12 ,  F01N2570/14 ,  F02B23/104 ,  F02B75/12 ,  F02B77/02 ,  F02B77/04 ,  F02B2075/125 ,  F02F3/14 ,  F02F2200/00 ,  F02M35/10334 ,  Y02T10/125

Abstract: A method and apparatus for reducing at least one of HC, CO, and NOx emissions from an operating internal combustion engine fueled by hydrocarbon or similar fuels, such as alcohols, wherein a portion of the internal combustion chamber has aluminum and/or titanium containing surfaces coated with a titanium dioxide coating further comprising a dopant in and/or on the adherent titanium dioxide coating.