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：US20200157976A1

公开(公告)日：2020-05-21

申请号：US16601910

申请日：2019-10-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takuya TAKAHASHI ,  Atsushi HOSHIMIYA ,  Hidetoshi HIROSE ,  Takashi KAWANAKA

IPC: F01L1/02 ,  F16H7/18 ,  F16H7/06 ,  F01L1/053 ,  F01L1/46

Abstract: A drive force transmission mechanism includes: a sprocket attached to a camshaft; a timing chain meshing with the sprocket and transmitting a drive force of a crankshaft to the camshaft; and a guide unit facing the timing chain, wherein the guide unit is located within a mesh zone where the timing chain and the sprocket mesh with each other, is not located in a zone other than the mesh zone, and has a length at least equal to a length of one link of the timing chain

公开(公告)号：US20160319705A1

公开(公告)日：2016-11-03

申请号：US15030417

申请日：2015-01-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toshiyuki YANO ,  Yoshiaki MIYAZATO ,  Hidetoshi HIROSE ,  Yoshikazu HARA

IPC: F01L1/08 ,  F01L1/26 ,  F01L13/00 ,  F01L1/04

CPC classification number: F01L1/08 ,  F01L1/04 ,  F01L1/267 ,  F01L13/0036 ,  F01L2001/0473

Abstract: An adjustable valve device includes: a first cam portion penetrated by a camshaft, rotating with the camshaft, and including an elongated hole formed therein; a U or L shaped second cam portion supported by the first cam portion so as to swing to move between a first state and a second state; a stopper pin fixed to the second cam portion and penetrating through the elongated hole; a biasing member biasing the stopper pin so that the second cam portion becomes in the first state; a lock mechanism locking the second cam portion only when the second cam portion is in the first state; and a cam follower exerting a reactive force so that the second cam portion becomes in the second state in a state where a lock of the second cam portion is released, wherein the reactive force is greater than a biasing force of the biasing member.

Abstract translation: 一种可调节阀装置，包括：由凸轮轴穿过的凸轮轴，与凸轮轴一起旋转并包括形成在其中的细长孔; U形或L形的第二凸轮部分，其被第一凸轮部分支撑以摆动以在第一状态和第二状态之间移动; 固定到第二凸轮部分并穿过细长孔的止动销; 偏置构件偏压止动销，使得第二凸轮部分变为第一状态; 仅当第二凸轮部处于第一状态时锁定第二凸轮部的锁定机构; 以及具有反作用力的凸轮从动件，使得第二凸轮部分在第二凸轮部分的锁定被解除的状态下变为第二状态，其中反作用力大于偏置构件的偏置力。

公开(公告)号：US20160273414A1

公开(公告)日：2016-09-22

申请号：US15030150

申请日：2014-10-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shuichi EZAKI ,  Hidetoshi HIROSE

IPC: F01L1/18 ,  F01L1/26 ,  F01L1/24 ,  F01L13/00

CPC classification number: F01L1/185 ,  F01L1/053 ,  F01L1/18 ,  F01L1/2405 ,  F01L1/255 ,  F01L1/267 ,  F01L1/34416 ,  F01L13/0005 ,  F01L13/0036 ,  F01L13/0057 ,  F01L2001/0473 ,  F01L2810/04

Abstract: A valve mechanism includes: a support shaft immovably fixed to a main body of an internal combustion engine, a main arm swingably supported by the support shaft; two sub-arms arranged at both sides of the main arm; a coupling support portion swingably supporting and coupling the two sub-arms to the main arm; a cam; and a roller rotatably located in the main arm. Each of the two sub-arms includes: a drive unit pressing and driving a valve; and a contact portion contacting a plunger of a lash adjuster, the contact portion has a curved surface slidably contacting a flat surface formed in a tip portion of the plunger and having an arc-like curved surface shape of which a central axis line corresponds to a central swing axis line of the main arm in a state where the cam abuts on the roller in a base circular portion of the cam.

Abstract translation: 阀机构包括：不可移动地固定到内燃机主体的支撑轴，由支撑轴可摆动地支撑的主臂; 两个副臂布置在主臂的两侧; 联接支撑部分可摆动地支撑并将两个子臂联接到主臂; 一个凸轮 以及可旋转地位于主臂中的辊。 两个副臂中的每一个包括：驱动单元，按压并驱动阀; 以及与间隙调节器的柱塞接触的接触部分，所述接触部分具有可滑动地接触形成在所述柱塞的顶端部分中的平坦表面并具有弧形曲面形状的曲面，其中心轴线对应于 在凸轮在凸轮的基部圆形部分中抵靠在辊上的状态下，主臂的中心摆动轴线。