JPH0299228U

JPH0299228U -

Info

Publication number: JPH0299228U
Application number: JP808289U
Authority: JP
Priority date: 1989-01-26
Filing date: 1989-01-26
Publication date: 1990-08-07
Anticipated expiration: 2004-01-26
Also published as: JPH0727376Y2

Description

[Brief explanation of drawings]

第１図は本考案に基づく吸気装置を備える内燃
機関の一部を模式的に示す断面図である。第２図
は動弁機構の一部を模式的に示す構成図である。
第３図は動弁機構の要部を示す断面図である。第
４図は内燃機関の回転速度の変化に伴う動弁機構
及び吸気装置の切換タイミングと共に内燃機関の
出力トルクの変化を示すグラフである。第５図は
本考案に基づく吸気装置の第２の実施例を示す部
分断面図である。１ａ，１ｂ……吸気弁、２……カム軸、３ａ，
３ｂ……低速カム、４……高速カム、５〜７……
ロツカアーム、５ａ，６ａ，７ａ……スリツパ面
、８……ロツカ軸、９ａ，９ｂ……タペツトねじ
、１０ａ，１０ｂ……ロツクナツト、１１……シ
リンダヘツド、１２……リフタ、１４……動弁切
換機構、１５ａ，１５ｂ……スプリングリテーナ
、１６ａ，１６ｂ……バルブスプリング、１７，
２０，２１……ガイド孔、２５〜２７……ピスト
ン、２８……圧縮コイルばね、３０……油供給路
、３２……通路、３３……ポート、３４……通路
、３５……ポート、４０……吸気ポート、４１…
…スロツトルボデイ、４２，４３……吸気通路体
、４４……吸気室、４５……スロツトル弁、４６
……盲通路、４７……吸気通路、４８……隔壁、
４８ａ，４８ｂ……延長部、４９……合流室、５
０……燃料噴射弁、５１……開閉制御弁、５２…
…アクチユエータ、５３……油圧コントローラ、
５４……制御ユニツト、５５……速度センサ、５
６……盲通路。 FIG. 1 is a sectional view schematically showing a part of an internal combustion engine equipped with an intake system according to the present invention. FIG. 2 is a configuration diagram schematically showing a part of the valve train.
FIG. 3 is a sectional view showing the main parts of the valve mechanism. FIG. 4 is a graph showing changes in the output torque of the internal combustion engine as well as switching timings of the valve train and the intake system due to changes in the rotational speed of the internal combustion engine. FIG. 5 is a partial sectional view showing a second embodiment of the intake device based on the present invention. 1a, 1b...Intake valve, 2...Camshaft, 3a,
3b...Low speed cam, 4...High speed cam, 5-7...
Locker arm, 5a, 6a, 7a...Slipper surface, 8... Locker shaft, 9a, 9b... Tappet screw, 10a, 10b... Lock nut, 11... Cylinder head, 12... Lifter, 14... Valve operation switching mechanism, 15a, 15b...spring retainer, 16a, 16b...valve spring, 17,
20, 21... Guide hole, 25-27... Piston, 28... Compression coil spring, 30... Oil supply path, 32... Passage, 33... Port, 34... Passage, 35... Port, 40 ...Intake port, 41...
...Throttle body, 42, 43...Intake passage body, 44...Intake chamber, 45...Throttle valve, 46
... Blind passage, 47 ... Intake passage, 48 ... Bulkhead,
48a, 48b...extension part, 49...merging room, 5
0...Fuel injection valve, 51...Opening/closing control valve, 52...
...Actuator, 53...Hydraulic controller,
54... Control unit, 55... Speed sensor, 5
6...Blind passage.

Claims

[Claims for Utility Model Registration] (1) An intake device for an internal combustion engine equipped with a valve mechanism whose operating state can be varied depending on the operating state, which extends in parallel along a curved intake passage. and an opening/closing control valve that selectively communicates the intake passage with the blind pipe, and the opening/closing control valve is configured to perform the opening/closing control at a rotational speed different from a rotational speed at which the operating state of the valve operating mechanism is switched. An intake device characterized by controlling opening and closing of a valve. (2) An intake device for an internal combustion engine, comprising: blind pipes extending in parallel along a curved intake passage; and an opening/closing control valve that selectively communicates the intake passage with the blind pipe. An intake device comprising: the blind pipe formed by integrally casting with a member defining the intake passage.