公开(公告)号：US20180224002A1

公开(公告)日：2018-08-09

申请号：US15851897

申请日：2017-12-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shouji KATSUMATA

IPC: F16K1/36 ,  F16K1/12

CPC classification number: F16K1/36 ,  F01L1/00 ,  F01L3/02 ,  F01L2103/00 ,  F16K1/12

Abstract: An engine valve for an internal-combustion engine includes: a head part including a main surface facing a combustion chamber of the internal-combustion engine and a valve face coming in contact with a valve seat; a stem part extending along a direction of movement of the engine valve; and a neck part between the head part and the stem part. A material of the stem part is heat-resistant steel. A material of the head part is a high-λ material such as aluminum, an aluminum alloy, tungsten steel, chrome steel, low-chrome steel, and low-carbon steel.

公开(公告)号：US20170183988A1

公开(公告)日：2017-06-29

申请号：US15333395

申请日：2016-10-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shouji KATSUMATA ,  Hidetoshi HIROSE

IPC: F01L5/24 ,  F01L5/02

CPC classification number: F01L5/24 ,  F01L3/08 ,  F01L3/20 ,  F01L5/02 ,  F01L2810/02

Abstract: In an engine valve, a first sliding area formed at a valve head side in an outer face of a valve stem, and sliding along a stem guide, a second sliding area formed at an opposite side from the valve head side, and sliding along the stem guide, and a first small diameter area formed between the first sliding area and the second sliding area are formed. Further, in the engine valve, a length, in an axial direction of the valve stem, of the first sliding area abutting on the stem guide at a position where the engine valve is fully opened is longer as compared with a length, in the axial direction of the valve stem, of the second sliding area abutting on the stem guide at a position where the engine valve is fully closed.

公开(公告)号：US20170058724A1

公开(公告)日：2017-03-02

申请号：US15120174

申请日：2015-02-17

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Shouji KATSUMATA ,  Kenichi HARADA ,  Toshihisa SUGIYAMA

IPC: F01L1/32

CPC classification number: F01L1/32 ,  F01L1/462 ,  F01L3/10

Abstract: A valve rotation includes: a first sheet member that extends toward a surrounding of a valve stem under a condition that a rotation action of the first sheet member is suppressed with respect to a cylinder head, and a second sheet member that faces to the first sheet member, that is capable of rotating with respect to the first sheet member and is subjected to a load for opening the valve; a force conversion structure that converts the load for opening the valve applied to the second sheet member into a rotation force.

Abstract translation: 阀旋转包括：第一片状构件，其在相对于气缸盖抑制第一片构件的旋转作用的条件下朝向阀杆的周围延伸;以及第二片构件，其面向第一片 构件，其能够相对于第一片构件旋转，并且承受用于打开阀的载荷; 力转换结构，其将施加到第二片构件的阀的负载转换为旋转力。