JPH0449642U

JPH0449642U -

Info

Publication number: JPH0449642U
Application number: JP9215890U
Authority: JP
Priority date: 1990-08-31
Filing date: 1990-08-31
Publication date: 1992-04-27

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例としての吸気遮断
弁装置の弁軸の装着状態を示す断面図であり、第
２，３図は本考案の第２実施例としての吸気遮断
弁装置を示すもので、第２図はその弁軸の装着状
態を示す断面図、第３図ａは第２図のａ−ａ
矢視断面図、第３図ｂは第２図のｂ−ｂ矢視
断面図、第３図ｃは第２図のｃ−ｃ矢視断面
図であり、第４図は本考案の第３実施例としての
吸気遮断弁装置の弁軸の装着状態を示す断面図で
あり、第５，６図は従来の吸気遮断弁装置を示す
もので、第５図はその装置をそなえたガソリンエ
ンジンシステムを示す構成図、第６図はその弁軸
の装着状態を示す断面図であり、第７図はその弁
軸の揺動防止を図つた従来の吸気遮断弁装置の弁
軸の装着状態を示す断面図である。１……燃焼室、２……吸気通路、２ａ……サー
ジタンク、２ｂ……主吸気通路、２ｃ……バイパ
ス吸気通、３……排気通路、４……吸気弁、５…
…排気弁、６……エアクリーナ、７……スロツト
ル弁、８……電磁式燃料噴射弁（電磁弁；インジ
エクタ）、９……触媒コンバータ、１０……吸気
遮断弁、１１……吸気マニホルド、１１ａ〜１１
ｆ……吸気マニホルド部分、１１Ｃ……バイパス
用配管、１２……弁軸、１３ａ〜１３ｇ……吸気
ポート１１の側壁部分、１５，１５ａ〜１５ｇ，
１６，１６ａ〜１６ｇ，１７，１７ａ〜１７ｇ…
…軸受部、１８ａ〜１８ｇ，１９ａ〜１９ｇ……
軸心（軸穴中心）、２１，２１ａ，２１ｂ，２２
，２３……軸心線、２１ａ……第１の軸心線、２
１ｂ……第２の軸心線、２４……正規の軸心線、
２５ａ〜２５ｇ……穴、２６ａ〜２６ｇ……ブツ
シユ、２７……弁軸、２７ａ〜２７ｇ……摺接部
、２８……弁軸２７の軸心線、Ｅ……エンジン（
Ｖ型６気筒エンジン）。 FIG. 1 is a sectional view showing how the valve shaft of an intake cutoff valve device according to a first embodiment of the present invention is installed, and FIGS. 2 and 3 show an intake cutoff valve device according to a second embodiment of the present invention. Figure 2 is a cross-sectional view showing the valve stem installed, and Figure 3a is a-a in Figure 2.
3b is a sectional view taken along the line bb in FIG. 2, FIG. 3c is a sectional view taken along the line c-c in FIG. 2, and FIG. FIG. 5 is a sectional view showing a state in which the valve shaft of an intake cutoff valve device is installed as an example, and FIGS. 5 and 6 show a conventional intake cutoff valve device, and FIG. 5 shows a gasoline engine system equipped with the device. 6 is a sectional view showing the state in which the valve stem is installed, and FIG. 7 shows the state in which the valve stem is installed in a conventional intake cutoff valve device designed to prevent the valve stem from swinging. FIG. 1...Combustion chamber, 2...Intake passage, 2a...Surge tank, 2b...Main intake passage, 2c...Bypass intake vent, 3...Exhaust passage, 4...Intake valve, 5...
...exhaust valve, 6...air cleaner, 7...throttle valve, 8...electromagnetic fuel injection valve (electromagnetic valve; injector), 9...catalytic converter, 10...intake cutoff valve, 11...intake manifold, 11a ~11
f...Intake manifold part, 11C...Bypass piping, 12...Valve shaft, 13a to 13g...Side wall part of intake port 11, 15, 15a to 15g,
16, 16a ~ 16g, 17, 17a ~ 17g...
...Bearing part, 18a to 18g, 19a to 19g...
Shaft center (shaft hole center), 21, 21a, 21b, 22
, 23... Axial center line, 21a... First axis center line, 2
1b...Second axis line, 24...Regular axis line,
25a to 25g...hole, 26a to 26g...button, 27...valve shaft, 27a to 27g...sliding portion, 28...axial center line of valve shaft 27, E...engine (
V type 6 cylinder engine).

Claims

[Scope of Claim for Utility Model Registration] (1) In an internal combustion engine equipped with a plurality of combustion chambers, an intake cutoff valve disposed in each intake passage leading to each intake port and each intake port described above can be controlled simultaneously. As shown in FIG. An intake cutoff valve device characterized in that the plurality of bearing portions are arranged such that the axis line connecting the centers of the bearing holes of the plurality of bearing portions arranged in series is bent or curved. . (2) In an internal combustion engine equipped with a plurality of combustion chambers, an intake cutoff valve is provided in each intake passage leading to each intake port, and the plurality of intake cutoff valves are arranged so that each of the above-mentioned intake ports can be controlled simultaneously. A valve shaft having a valve attached thereto, and a plurality of bearings provided in series on the side wall portion of each of the intake passages to pivotally support the valve shaft, the plurality of bearings arranged in series include A bearing group on one end of the bearings is coaxially arranged on a first axis, and a bearing group on the other end is coaxially arranged on a second axis intersecting the first axis. hand,
An intake cutoff valve device characterized in that an axial center line connecting the centers of the respective bearing holes of the plurality of bearing portions arranged in series is formed in a bent shape. (3) In an internal combustion engine equipped with a plurality of combustion chambers, an intake cutoff valve is provided in each intake passage leading to each intake port, and the plurality of intake cutoff valves are arranged so that each of the above-mentioned intake ports can be controlled simultaneously. The valve shaft has a valve mounted thereon, and a plurality of bearings are provided in series on the side wall portions of each of the intake passages to pivotally support the valve shaft. Consisting of holes formed in series in the side wall portion of each intake passage so as to be located on the same axis, and bushes installed in each of these holes, and some or all of these bushes is formed to have a bearing hole that is appropriately eccentric with respect to the hole when installed, and the axis line connecting the centers of the bearing holes of each bush installed in the hole is bent or curved. An intake cutoff valve device characterized in that the plurality of bushes described above are provided. (4) In an internal combustion engine equipped with a plurality of combustion chambers, an intake cutoff valve is provided in each intake passage leading to each intake port, and the plurality of intake cutoff valves are arranged so that each of the above-mentioned intake ports can be controlled simultaneously. A valve shaft having a valve attached thereto, and a plurality of bearings provided in series on the side wall portions of each of the intake passages to support the valve shaft, and each of the bearings on the valve shaft A part of the sliding contact portion is arranged eccentrically with respect to the axis of the valve shaft,
Intake cutoff valve device.