公开(公告)号：US20180179921A1

公开(公告)日：2018-06-28

申请号：US15823765

申请日：2017-11-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toshiyuki YANO ,  Yu YOKOYAMA ,  Yuta NISHIMURA ,  Atsuhisa TAMANO ,  Soichiro SUGA

IPC: F01L13/00 ,  F01L1/08 ,  F01L1/053

CPC classification number: F01L13/0036 ,  F01L1/053 ,  F01L1/08 ,  F01L1/185 ,  F01L1/2405 ,  F01L2001/0537 ,  F01L2001/34496 ,  F01L2013/0052 ,  F01L2013/0078 ,  F01L2013/101 ,  F01L2105/00 ,  F01L2810/00

Abstract: For example, two intake valves for each cylinder each are driven by a selected one of cams via a corresponding rocker arm. Each rocker arm includes a support portion and a pressing portion (distal end portion). The support portion is rockably supported by a cylinder head. The pressing portion is configured to press a stem of the corresponding intake valve. The support portion of one of the rocker arms deviates to one side in an axis X direction (cam axial direction) with respect to the distal end portion. The support portion of the other one of the rocker arms deviates to the other side in the axis X direction with respect to the distal end portion.

公开(公告)号：US20180179920A1

公开(公告)日：2018-06-28

申请号：US15830088

申请日：2017-12-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yu YOKOYAMA ,  Atsuhisa TAMANO ,  Toshiyuki YANO ,  Soichiro SUGA ,  Yuta NISHIMURA

IPC: F01L1/053 ,  F01L1/20

CPC classification number: F01L1/053 ,  F01L1/185 ,  F01L1/20 ,  F01L13/0036 ,  F01L2001/0473 ,  F01L2001/0537 ,  F01L2013/0052 ,  F01L2013/101 ,  F01L2105/00 ,  F01L2810/02

Abstract: A variable valve mechanism includes a camshaft and a cam unit. Internal spline teeth provided at an inner periphery of a sleeve of the cam unit are in mesh with external spline teeth provided at an outer periphery of the camshaft. An engaging portion is provided at one of the inner periphery of the sleeve and the outer periphery of the camshaft, and is configured to retractably project toward the other one of the inner periphery of the sleeve and the outer periphery of the camshaft. A latching portion is provided at the other one of the inner periphery of the sleeve and the outer periphery of the camshaft. The sleeve has a through-hole that is provided at the same position in a circumferential direction as the engaging portion to supply the inner periphery of the sleeve with lubricating oil.