公开(公告)号：US20190211774A1

公开(公告)日：2019-07-11

申请号：US16354959

申请日：2019-03-15

申请人： Tenneco Inc.

发明人： Norbert G. Schneider

IPC分类号： F02F3/10 ,  C23C4/129 ,  F02F3/00 ,  C23C4/12 ,  F02F3/26 ,  C23C4/134 ,  C23C4/126 ,  C23C4/11 ,  C23C4/02 ,  C04B35/48 ,  C04B35/486 ,  C04B35/622 ,  F02B77/02 ,  F02F3/12 ,  C23C28/00 ,  C23C4/08 ,  C23C4/06

CPC分类号： F02F3/10 ,  C04B35/48 ,  C04B35/486 ,  C04B35/62222 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/9607 ,  C23C4/02 ,  C23C4/06 ,  C23C4/08 ,  C23C4/11 ,  C23C4/12 ,  C23C4/126 ,  C23C4/129 ,  C23C4/134 ,  C23C28/321 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  F02B77/02 ,  F02F3/0092 ,  F02F3/12 ,  F02F3/26 ,  F02F2003/0007 ,  F02F2200/06 ,  F05C2251/042 ,  F05C2251/048 ,  F05C2253/12

摘要： A steel piston designed to improve thermal efficiency, fuel consumption, and performance of an engine is provided. The piston includes a steel body portion and a thermal barrier layer applied to an upper combustion surface and/or a ring belt to reduce the amount of heat transferred from a combustion chamber to the body portion. The thermal barrier layer has a thermal conductivity which is lower than a thermal conductivity of the steel body portion. The thermal barrier layer typically includes a ceramic material, for example ceria, ceria stabilized zirconia, and/or a mixture of ceria stabilized zirconia and yttria stabilized zirconia in an amount of 90 to 100 wt. %, based on the total weight of the ceramic material. The thermal barrier layer can also have a gradient structure which gradually transitions from 100 wt. % of a metal bond material to 100 wt. % of the ceramic material.

公开(公告)号：US12110837B2

公开(公告)日：2024-10-08

申请号：US16354959

申请日：2019-03-15

申请人： Tenneco Inc.

发明人： Norbert G. Schneider

IPC分类号： F02F3/10 ,  C04B35/48 ,  C04B35/486 ,  C04B35/622 ,  C23C4/02 ,  C23C4/06 ,  C23C4/08 ,  C23C4/11 ,  C23C4/12 ,  C23C4/126 ,  C23C4/129 ,  C23C4/134 ,  C23C28/00 ,  F02B77/02 ,  F02F3/00 ,  F02F3/12 ,  F02F3/26

CPC分类号： F02F3/10 ,  C04B35/48 ,  C04B35/486 ,  C04B35/62222 ,  C23C4/02 ,  C23C4/06 ,  C23C4/08 ,  C23C4/11 ,  C23C4/12 ,  C23C4/126 ,  C23C4/129 ,  C23C4/134 ,  C23C28/321 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  F02B77/02 ,  F02F3/0092 ,  F02F3/12 ,  F02F3/26 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/9607 ,  F02F2003/0007 ,  F02F2200/06 ,  F05C2251/042 ,  F05C2251/048 ,  F05C2253/12

摘要： A steel piston designed to improve thermal efficiency, fuel consumption, and performance of an engine is provided. The piston includes a steel body portion and a thermal barrier layer applied to an upper combustion surface and/or a ring belt to reduce the amount of heat transferred from a combustion chamber to the body portion. The thermal barrier layer has a thermal conductivity which is lower than a thermal conductivity of the steel body portion. The thermal barrier layer typically includes a ceramic material, for example ceria, ceria stabilized zirconia, and/or a mixture of ceria stabilized zirconia and yttria stabilized zirconia in an amount of 90 to 100 wt. %, based on the total weight of the ceramic material. The thermal barrier layer can also have a gradient structure which gradually transitions from 100 wt. % of a metal bond material to 100 wt. % of the ceramic material.

公开(公告)号：US11560947B2

公开(公告)日：2023-01-24

申请号：US17179471

申请日：2021-02-19

申请人： TENNECO INC.

发明人： Norbert G. Schneider

IPC分类号： F16J9/12 ,  F02F3/00

摘要： 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 280° C., and thus prevents carbon from depositing or burns 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.