公开(公告)号：US20240141993A1

公开(公告)日：2024-05-02

申请号：US18548166

申请日：2022-03-08

Applicant: TPR CO., LTD.

Inventor： Akira HIKONE ,  Takashi OGURO ,  Noriaki AYUZAWA ,  Toshihiro YAMAOKA ,  Naoki UMEDA

IPC: F16J9/20 ,  F16J9/06

CPC classification number: F16J9/20 ,  F16J9/062

Abstract: An oil control ring comprises: an oil ring having a pair of land parts arranged in a sliding direction and connected to each other by a web part; and a coil expander that biases the oil ring toward the outer circumferential side in the radial direction. The web part of the oil ring is provided with a plurality of window holes. In the axial cross-sectional view of the largest opening portion of the window hole in the axial direction of the oil ring, a width H1 in the sliding direction of the oil ring and a length L1 of a combustion chamber-side non-window hole part, which excludes the window hole, in the outer circumferential surface of the web part, satisfy the condition of 0.15>L1/H1≥0.

公开(公告)号：US20190277220A1

公开(公告)日：2019-09-12

申请号：US16319248

申请日：2017-03-27

Applicant: TPR CO., LTD. ,  TPR INDUSTRY CO., LTD.

Inventor： Masami HORIGOME ,  Akira SATO ,  Takashi OIZUMI ,  Takashi INOUE ,  Akira HIKONE

IPC: F02F1/10 ,  F02F1/00 ,  F01P3/02 ,  B22D19/00 ,  B29C45/14

Abstract: Provided are a method of manufacturing an engine, an engine, and a connected cylinder. The method of manufacturing an engine includes at least a fitting step of fitting a connected cylinder to a hollow portion of a cylinder block main body. The connected cylinder is (1) a first connected cylinder including two or more cylinder liners and a connecting portion configured to connect the two or more cylinder liners to each other or (2) a second connected cylinder including a connected cylinder main body portion having two or more cylinder bores and a coating configured to cover an inner peripheral surface of the connected cylinder main body portion in which the cylinder bores are formed. The cylinder block main body has one end side, another end side, and the hollow portion passing through the cylinder block main body from the one end side to the another end side.