Title:
低いコンプレッションハイトを有する、頑丈かつ軽量のピストンおよびその構成方法
Document Type and Number:
Japanese Patent JP6668377
Kind Code:
B2
Abstract:
A piston for an internal combustion engine and method of construction is provided. The piston has a robust, lightweight monolithic piston body including an upper wall forming a combustion bowl depending radially inwardly from an annular, uppermost combustion surface. An undercrown surface is formed on an underside of the combustion bowl, with at least a portion of the undercrown surface being bounded by diametrically opposite skirt portions, pin bosses and strut portions connecting the skirt portions to the pin bosses. The bounded undercrown surface has an openly exposed surface area, as viewed looking along a central longitudinal axis along which the piston reciprocates, providing an expansive area against which oil being splashed or sprayed can come into direct contact with to enhance cooling the piston while in use. Through channels extending over upper regions of the pin bosses can be provided to further reduce weight and facilitate cooling.
Inventors:
Weininger, Michael
Jeffrey Elle, Liffe
Azebed, Miguel
Jeffrey Elle, Liffe
Azebed, Miguel
Application Number:
JP2017549779A
Publication Date:
March 18, 2020
Filing Date:
March 23, 2016
Export Citation:
Assignee:
TENNECO INC.
International Classes:
F02F3/00; F02F3/22; F02F3/26; F16J1/08
Domestic Patent References:
| JP2008507657A | ||||
| JP2004285942A | ||||
| JP53154907U | ||||
| JP59168557U |
Foreign References:
| US20130233270 |
Attorney, Agent or Firm:
Fukami patent office