公开(公告)号：US4469061A

公开(公告)日：1984-09-04

申请号：US512048

申请日：1983-07-08

Applicant: Yoshio Ajiki ,  Shoichi Honda ,  Masaaki Matsuura

Inventor： Yoshio Ajiki ,  Shoichi Honda ,  Masaaki Matsuura

IPC: F01L13/00 ,  F02F7/00 ,  F02D13/06

CPC classification number: F01L13/0005 ,  F02F7/006

Abstract: Method and apparatus for suspending valve actuation for use in an internal combustion engine is disclosed. Each of intake and exhaust valves is normally actuated by a rocker arm operated by a cam in synchronism with an engine operation. The rocker arm is supported at one end by a supporting member held to a cylinder head by means of a retaining member. The supporting member is selectively floatable with respect to the cylinder head to thereby effect suspension of valve operation. The supporting member is then held at a position where sliding contact between the rocker arm and the cam is prevented.

Abstract translation: 公开了用于悬挂用于内燃机的气门致动器的方法和装置。 进气门和排气门中的每一个通常由与发动机操作同步的由凸轮操作的摇臂驱动。 摇臂在一端由支撑构件支撑，支撑构件通过保持构件固定到气缸盖。 支撑构件相对于气缸盖可选择性地浮动，从而实现阀操作的暂停。 然后将支撑构件保持在防止摇臂和凸轮之间的滑动接触的位置。

公开(公告)号：USRE33411E

公开(公告)日：1990-10-30

申请号：US386772

申请日：1989-07-31

Applicant: Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

Inventor： Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

IPC: F01L1/26 ,  F02D13/06

CPC classification number: F02D13/06 ,  F01L1/267 ,  Y02T10/18

Abstract: A valve operating mechanism for operating a plurality of valves of a particular cylinder of an internal combustion engine includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having at least one cam. At least one of a plurality of cam followers slidably engages the cam for selectively operating the valves according to a cam profile of the cam. The cam followers are selectively interconnected and disconnected to operate the valves in different speed ranges of the internal combustion engine, the speed ranges including a range in which all of the valves remain inoperative. The camshaft has one or two annular raised portions in addition to the cam, and the cam followers include one or two cam followers which slidably engage the raised portion or portions. The valves remain inoperative by the annular portion or portions and are operated in a high-speed range by the cam, or selectively in low- and high-speed ranges by low- and high-speed ranges.

公开(公告)号：US4790274A

公开(公告)日：1988-12-13

申请号：US8741

申请日：1987-01-30

Applicant: Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

Inventor： Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

IPC: F01L1/26 ,  F02D13/06 ,  F01L1/34

CPC classification number: F02D13/06 ,  F01L1/267 ,  Y02T10/18

Abstract: A valve operating mechanism for operating a plurality of valves of a particular cylinder of an internal combustion engine includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having at least one cam. At least one of a plurality of cam followers slidably engages the cam for selectively operating the valves according to a cam profile of the cam. The cam followers are selectively interconnected and disconnected to operate the valves in different speed ranges of the internal combustion engine, the speed ranges including a range in which all of the valves remain inoperative. The camshaft has one or two annular raised portions in addition to the cam, and the cam followers include one or two cam followers which slidably engage the raised portion or portions. The valves remain inoperative by the annular portion or portions and are operated in a high-speed range by the cam, or selectively in low- and high-speed ranges by low- and high-speed ranges.

公开(公告)号：US4788946A

公开(公告)日：1988-12-06

申请号：US8740

申请日：1987-01-30

Applicant: Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

Inventor： Kazuo Inoue ,  Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh

IPC: F01L1/26 ,  F01L1/34 ,  F01L1/08 ,  F01L1/18

CPC classification number: F01L1/267

Abstract: A valve operating mechanism for operating a plurality of valves of an internal combustion engine includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having an array of three cams including a high-speed cam positioned at one end of the array. Three cam followers are held in sliding contact with the cams, respectively, for operating the valves according to cam profiles of the cams. The cam followers are selectively interconnected and disconnected to operate the valves at different valve timings in different speed ranges of the internal combustion engine. The speed ranges include a high-speed range in which all of the valves are controlled by the cam profile of the high-speed cam. The three cams may include low- and medium-speed cams, or two identical or different low-speed cams, in addition to the high-speed cam. These cams may be differently arranged in the array, and the cam followers include those which slidably engage one or two of the cams for operating the valves. The valves are operated selectively in low- and high-speed ranges, or in low-, medium-, and high-speed ranges, with different combinations of the cams.

公开(公告)号：US4727831A

公开(公告)日：1988-03-01

申请号：US891754

申请日：1986-07-31

Applicant: Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh ,  Kazuo Inoue

Inventor： Kenichi Nagahiro ,  Yoshio Ajiki ,  Masaaki Katoh ,  Kazuo Inoue

IPC: F01L1/12 ,  F01L1/26 ,  F01L13/00 ,  F02D17/02 ,  F02F1/24 ,  F02F1/42

CPC classification number: F01L1/26 ,  F01L1/267 ,  F02F1/4214 ,  F02F2001/247

Abstract: A valve operating mechanism for operating a pair of valves of an internal combustion engine, includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having a first low-speed cam, a second low-speed cam, and a high-speed cam which have different cam profiles, respectively, the first and second low-speed cams being disposed one on each side of the high-speed cam, a rocker shaft, and first, second, and third rocker arms rotatably mounted on the rocker shaft and held in sliding contact with the first low-speed cam, the second low-speed cam, and the high-speed cam, respectively, for operating the valves according to the cam profiles of the cams. A selective coupling is operatively disposed in and between the first, second, and third rocker arms for selectively interconnecting the first, second, and third rocker arms to allow angular movement thereof in unison and disconnecting the first, second, and third rocker arms to allow separate angular movement thereof.

Abstract translation: 一种用于操作内燃机的一对阀的气门操作机构，包括与内燃机的转动同步旋转的凸轮轴，具有第一低速凸轮，第二低速凸轮和高速凸轮 凸轮分别具有不同的凸轮轮廓，第一和第二低速凸轮分别设置在高速凸轮的每一侧，摇臂轴和可旋转地安装在摇杆轴上的第一，第二和第三摇臂， 保持与第一低速凸轮，第二低速凸轮和高速凸轮滑动接触，用于根据凸轮的凸轮轮廓来操作阀。 选择性联接可操作地设置在第一，第二和第三摇臂之间并且在第一，第二和第三摇臂之间，用于选择性地互连第一，第二和第三摇臂，以允许其一致地进行角运动并断开第一，第二和第三摇臂以允许 单独的角运动。

公开(公告)号：US4612884A

公开(公告)日：1986-09-23

申请号：US758154

申请日：1985-07-23

Applicant: Yoshio Ajiki ,  Shigemasa Kajiwara

Inventor： Yoshio Ajiki ,  Shigemasa Kajiwara

IPC: F01L13/00 ,  F01L1/26 ,  F01L1/34

CPC classification number: F01L1/267 ,  Y10T74/2101

Abstract: An internal combustion engine valve operating mechanism wherein there is a low speed cam corresponding to one intake valve or exhaust valve and having a shape designed for low speed operation as well as a high speed cam of a shape designed for high speed operation. A first rocker arm is in sliding contact with the low speed cam and abuts one intake valve or exhaust valve, a second rocker arm is in sliding contact with the high speed cam and a third rocker arm abuts the other intake valve or exhaust valve, with all three rocker arms pivotably supported by a single rocker shaft adjacent to each other. A first piston for connecting the first and second rocker arms is slidably mounted in the first rocker arm and a second piston for connecting the second and third rocker arms is slidably mounted in the second rocker arm extendable and contractable. A third piston is movably mounted in the third rocker arm and urged by a spring in a direction of abutment with the second piston. An annular engaging groove is formed in the outer surface of the first piston, and the first rocker arm is provided with a connecting and disconnection start controlling mechanisms for being engaged with or disengaged from the groove only when the first rocker arm pivots in a valve opening direction. Consequently, the rocker arm connecting and disconnecting operations are performed at the beginning of a valve closing section ensuring the proper completion of the operation.

Abstract translation: 一种内燃机气门操作机构，其中存在对应于一个进气门或排气门的低速凸轮，并具有为低速运转而设计的形状以及设计用于高速运转的形状的高速凸轮。 第一摇臂与低速凸轮滑动接触并邻接一个进气门或排气阀，第二摇臂与高速凸轮滑动接触，第三摇臂与另一个进气门或排气门相接， 所有三个摇臂由相邻的单个摇臂枢转地支撑。 用于连接第一和第二摇臂的第一活塞可滑动地安装在第一摇臂中，用于连接第二和第三摇臂的第二活塞可滑动地安装在第二摇臂中，该第二活塞可伸缩。 第三活塞可移动地安装在第三摇臂中，并通过弹簧沿与第二活塞邻接的方向推动。 在第一活塞的外表面上形成有环形接合槽，并且第一摇臂设置有仅当第一摇臂在阀开口中枢转时与槽接合或脱离槽的连接和断开启动控制机构 方向。 因此，在闭阀部分的开始执行摇臂连接和断开操作，确保操作的正确完成。