JPH0299255U - - Google Patents
Info
- Publication number
- JPH0299255U JPH0299255U JP808389U JP808389U JPH0299255U JP H0299255 U JPH0299255 U JP H0299255U JP 808389 U JP808389 U JP 808389U JP 808389 U JP808389 U JP 808389U JP H0299255 U JPH0299255 U JP H0299255U
- Authority
- JP
- Japan
- Prior art keywords
- noise reduction
- intake
- reduction device
- connecting pipe
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
- Characterised By The Charging Evacuation (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
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図及び第５図は、本考案に基づく吸気騒音低減
装置による音圧低減及び出力トルク向上の効果を
示すグラフである。
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、２７ｂ……小径部、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……スロツトル弁、４２……吸
気通路、４３……エアクリーナ、４４……燃料噴
射弁、４５……第１の接続管、４６……第１の共
鳴室、４７……第２接続管、４８……第２の共鳴
室、４９……開閉制御弁、５０……アクチユエー
タ、５１……制御ユニツト、５２……油圧コント
ローラ、５３……速度センサ。
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. FIGS. 4 and 5 are graphs showing the effect of reducing sound pressure and improving output torque by the intake noise reduction 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, 27b... Small diameter portion, 28... Compression coil spring, 30... Oil supply path, 32... Passage, 33... Port, 34... Passage, 35...port, 40...
Intake port, 41...throttle valve, 42...intake passage, 43...air cleaner, 44...fuel injection valve, 45...first connection pipe, 46...first resonance chamber, 47...second Connection pipe, 48...second resonance chamber, 49...opening/closing control valve, 50...actuator, 51...control unit, 52...hydraulic controller, 53...speed sensor.
Claims (1)
低減装置であつて、 第１の接続管を介して前記内燃機関の吸気通路
に連通する第１の共鳴室と、 第２の接続管を介して前記第１の共鳴室に連通
する第２の共鳴室とを備えることを特徴とする吸
気音低減装置。 (2) 前記第２の接続管に開閉制御弁が設けられ
ていることを特徴とする実用新案登録請求の範囲
第１項に記載の吸気音低減装置。[Claims for Utility Model Registration] (1) An intake noise reduction device for an internal combustion engine equipped with a switching valve mechanism, comprising: a first resonance connected to an intake passage of the internal combustion engine through a first connecting pipe; An intake noise reduction device comprising: a chamber; and a second resonance chamber communicating with the first resonance chamber via a second connecting pipe. (2) The intake noise reduction device according to claim 1, wherein the second connecting pipe is provided with an opening/closing control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989008083U JP2520983Y2 (en) | 1989-01-26 | 1989-01-26 | Intake sound reduction device for internal combustion engine having switching valve operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989008083U JP2520983Y2 (en) | 1989-01-26 | 1989-01-26 | Intake sound reduction device for internal combustion engine having switching valve operating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0299255U true JPH0299255U (en) | 1990-08-07 |
| JP2520983Y2 JP2520983Y2 (en) | 1996-12-18 |
Family
ID=31213647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989008083U Expired - Lifetime JP2520983Y2 (en) | 1989-01-26 | 1989-01-26 | Intake sound reduction device for internal combustion engine having switching valve operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520983Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845942U (en) * | 1981-09-21 | 1983-03-28 | トヨタ自動車株式会社 | Engine intake/exhaust noise reduction device |
| JPS6318763U (en) * | 1986-07-22 | 1988-02-06 |
-
1989
- 1989-01-26 JP JP1989008083U patent/JP2520983Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845942U (en) * | 1981-09-21 | 1983-03-28 | トヨタ自動車株式会社 | Engine intake/exhaust noise reduction device |
| JPS6318763U (en) * | 1986-07-22 | 1988-02-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520983Y2 (en) | 1996-12-18 |
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