公开(公告)号：US10267189B2

公开(公告)日：2019-04-23

申请号：US15833433

申请日：2017-12-06

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kaori Takehana ,  Yukio Konishi ,  Chikara Tanaka

IPC: F01L1/14 ,  F01L13/00 ,  F01L1/18 ,  F01L1/24 ,  F01L1/46

Abstract: A variable valve actuation device includes a plurality of valve lifter. Each valve lifter slidable in a lifter support hole between an upper position and a lower position. A valve rest recess communicating with a valve rest chamber opens out at an outer circumferential surface of the valve lifter, and a valve rest supply port of a valve rest passage opens out at an inner circumferential surface of the lifter support hole in such a positional relationship that the valve rest passage and the valve rest chamber communicate with each other when the valve lifter is at the upper position, and continue to communicate with each other until the valve lifter has moved downward to a shut-off position located at a prescribed part of a down stroke from the upper position. The communication between the valve rest passage and the valve rest chamber shut off at the shut-off position.

公开(公告)号：US10066518B2

公开(公告)日：2018-09-04

申请号：US15604155

申请日：2017-05-24

Applicant: HONDA MOTOR CO., LTD.

Inventor： Chikara Tanaka ,  Kaori Takehana

IPC: F01L3/10 ,  F01L1/25 ,  F01L1/047 ,  F01L1/14 ,  F01L1/46 ,  F01L13/00 ,  F01L1/053 ,  F01L1/18 ,  F01L1/24

Abstract: The variable valve actuating device (20) comprises a switch pin (53) slidably received in the valve lifter (24) so as to selectively abut the end surface of the valve stem as the valve lifter is actuated by the cam. The device further comprises a first spring retainer (36) attached to an intermediate part of the valve stem (32) to engage a first valve spring (35), and a second spring retainer (44) slidably engaged by an end part of the valve stem to engage a second valve spring (43). The valve stem is provided with a stem end (39) which is enlarged with respect to a part of the valve stem slidably engaging the second spring retainer so as to define a shoulder surface (40a) that engages the second spring retainer against a spring force of the second valve spring.

公开(公告)号：US20170342869A1

公开(公告)日：2017-11-30

申请号：US15604155

申请日：2017-05-24

Applicant: HONDA MOTOR CO., LTD.

Inventor： Chikara Tanaka ,  Kaori Takehana

IPC: F01L1/25 ,  F01L1/047 ,  F01L1/14 ,  F01L1/46

CPC classification number: F01L1/25 ,  F01L1/047 ,  F01L1/053 ,  F01L1/14 ,  F01L1/143 ,  F01L1/185 ,  F01L1/2405 ,  F01L1/462 ,  F01L13/0005 ,  F01L2105/00

Abstract: The variable valve actuating device (20) comprises a switch pin (53) slidably received in the valve lifter (24) so as to selectively abut the end surface of the valve stem as the valve lifter is actuated by the cam. The device further comprises a first spring retainer (36) attached to an intermediate part of the valve stem (32) to engage a first valve spring (35), and a second spring retainer (44) slidably engaged by an end part of the valve stem to engage a second valve spring (43). The valve stem is provided with a stem end (39) which is enlarged with respect to a part of the valve stem slidably engaging the second spring retainer so as to define a shoulder surface (40a) that engages the second spring retainer against a spring force of the second valve spring.

公开(公告)号：US20180179922A1

公开(公告)日：2018-06-28

申请号：US15833433

申请日：2017-12-06

Applicant: Honda Motor Co., Ltd.

Inventor： Kaori Takehana ,  Yukio Konishi ,  Chikara Tanaka

IPC: F01L13/00

CPC classification number: F01L13/0036 ,  F01L1/143 ,  F01L1/185 ,  F01L1/2405 ,  F01L13/0005 ,  F01L2001/467 ,  F01L2105/00 ,  F01L2107/00

Abstract: A variable valve actuation device includes a plurality of valve lifter. Each valve lifter slidable in a lifter support hole between an upper position and a lower position. A valve rest recess communicating with a valve rest chamber opens out at an outer circumferential surface of the valve lifter, and a valve rest supply port of a valve rest passage opens out at an inner circumferential surface of the lifter support hole in such a positional relationship that the valve rest passage and the valve rest chamber communicate with each other when the valve lifter is at the upper position, and continue to communicate with each other until the valve lifter has moved downward to a shut-off position located at a prescribed part of a down stroke from the upper position. The communication between the valve rest passage and the valve rest chamber shut off at the shut-off position.