JPS6320839Y2 - - Google Patents
Info
- Publication number
- JPS6320839Y2 JPS6320839Y2 JP14108682U JP14108682U JPS6320839Y2 JP S6320839 Y2 JPS6320839 Y2 JP S6320839Y2 JP 14108682 U JP14108682 U JP 14108682U JP 14108682 U JP14108682 U JP 14108682U JP S6320839 Y2 JPS6320839 Y2 JP S6320839Y2
- Authority
- JP
- Japan
- Prior art keywords
- intake
- cylinder
- valve
- cutoff
- cylinders
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
【考案の詳細な説明】
この考案は可変気筒エンジンの遮音装置に関
し、さらに詳しくは、燃料供給停止気筒の吸、排
気弁の作動を止めるようにした可変気筒エンジン
の気筒数変更時に、前記吸、排気弁の作動停止タ
イミングのずれにより生じる吸気マニホルドへの
吹き返し音が外に洩れるのを防ぐようにした可変
気筒エンジンの遮音装置に関する。[Detailed description of the invention] This invention relates to a sound insulation device for a variable cylinder engine. The present invention relates to a sound insulation device for a variable cylinder engine that prevents noise from blowing back into the intake manifold caused by a shift in the timing of stopping the operation of an exhaust valve from leaking outside.
近年、多気筒エンジンにおいて、エンジンの低
速軽負荷時に一部気筒への燃料の供給を遮断する
と共に、その気筒の吸、排気弁の作動を止めて作
動気筒数を減らし、軽負荷領域の燃費の改善を図
ることが実用化されている。 In recent years, in multi-cylinder engines, the fuel supply to some cylinders is cut off when the engine is running at low speeds and under light loads, and the intake and exhaust valves of those cylinders are stopped to reduce the number of operating cylinders, thereby reducing fuel consumption in the light load range. Improvements have been put into practical use.
しかしながら、前記のような可変気筒エンジン
においては、吸、排気弁を各個任意に停止、作動
を切り換えた場合、作動状態から停止状態への切
り換わり時に排気弁は閉弁停止し、吸気弁がまだ
作動していると、吸気弁が開いたとたんにシリン
ダ内で圧縮された空気が吸気管へ逆流、膨張し、
大きな吹き返し音を発生して運転者や乗員に不安
感を与えたり、周囲の人に不快感を与えたりする
欠点があつた。また、この吹き返し音は、逆に停
止気筒が作動する場合にも同様に、吸気弁が先に
開弁作動し、排気弁が閉弁停止している状態で発
生するという不具合が生じていた。 However, in a variable cylinder engine such as the one described above, when the intake and exhaust valves are stopped and operated individually, the exhaust valve closes and stops when switching from the operating state to the stopped state, and the intake valve is still closed. During operation, as soon as the intake valve opens, the compressed air in the cylinder flows back into the intake pipe and expands.
This has the disadvantage that it generates a loud blowback sound that makes the driver and passengers feel uneasy and makes people around them feel uncomfortable. In addition, this blowback sound also occurs when the stopped cylinder is activated, with the intake valve opening first and the exhaust valve being closed and stopped.
この考案の目的は前記従来の欠点を解消し、可
変気筒エンジンにおいて作動気筒数変更時に吸気
吹き返し音の発生を抑えることができる優れた遮
音装置を提供することである。 The purpose of this invention is to eliminate the above-mentioned conventional drawbacks and provide an excellent sound insulation device that can suppress the generation of intake blowback noise when changing the number of operating cylinders in a variable cylinder engine.
前記目的を達成するこの考案の可変気筒エンジ
ンの遮音装置は、一部の気筒に吸気遮断弁と、燃
料供給遮断装置と、吸・排気弁動作停止装置とを
設け、減気筒運転に移行の際は、順次、燃料供給
遮断装置、吸気遮断弁、吸・排気弁動作停止装置
の順で作動させ、全気筒運転に移行の際は、前記
の逆の順で作動させる気筒数コントローラを設け
たことを特徴としている。 The sound insulation device for a variable cylinder engine of this invention that achieves the above object is provided with an intake cutoff valve, a fuel supply cutoff device, and an intake/exhaust valve operation stop device for some cylinders, and when transitioning to reduced cylinder operation, is equipped with a cylinder number controller that operates the fuel supply cutoff device, intake cutoff valve, and intake/exhaust valve operation stop device in this order, and operates in the reverse order when shifting to all cylinder operation. It is characterized by
以下図面を用いてこの考案の実施例を説明す
る。 Embodiments of this invention will be described below with reference to the drawings.
第１図はＶ型10気筒の可変気筒エンジン１の概
略平面図であり、４が常時作動バンクを示し、５
が作動停止可能バンクを示している。２は吸気マ
ニホルド、３は排気マニホルドである。 FIG. 1 is a schematic plan view of a V-type 10-cylinder variable cylinder engine 1, where 4 indicates a constantly operating bank, and 5
indicates a bank that can be deactivated. 2 is an intake manifold, and 3 is an exhaust manifold.
この考案では上記Ｖ型エンジン１の作動停止可
能バンク５の吸気マニホルド２Ａの上流部に、吸
気遮断弁１０を設置している。この吸気遮断弁１
０は前記エンジン１が図示しない排気ブレーキを
使用した時に吸気経路を遮断する吸気遮断弁６と
同じもので良く、その構造は例えば第２図に示す
通りである。 In this invention, an intake cutoff valve 10 is installed upstream of the intake manifold 2A of the stoppable bank 5 of the V-type engine 1. This intake cutoff valve 1
0 may be the same as the intake cutoff valve 6 that cuts off the intake path when the engine 1 uses an exhaust brake (not shown), and its structure is, for example, as shown in FIG. 2.
すなわち、前記吸気遮断弁１０は第２図のよう
にそのケーシング１１内に弁体１２を保持部材１
３で回動自在に保持し、保持部材１３は回転軸１
４によつて前記ケーシング１１外でレバー１５に
連結して、このレバー１５の回動により弁体１２
が吸気路１８を開閉するようなものであれば良
い。 That is, the intake cutoff valve 10 has a valve body 12 inside its casing 11 as shown in FIG.
3, and the holding member 13 is rotatably held by the rotating shaft 1.
4 is connected to a lever 15 outside the casing 11, and when the lever 15 rotates, the valve body 12
It is sufficient if it opens and closes the intake passage 18.
また、第３図に示すようにエンジンが直列の６
気筒エンジン７で、その＃１〜＃３気筒が作動停
止可能気筒である場合は、吸気マニホルド８を２
分割し、＃１〜＃３気筒の吸気マニホルド８Ａの
上流側のみに前記同様の吸気遮断弁１０を設置す
れば良く、この他の種類の可変気筒エンジンにお
いても、前述したと同様に作動停止可能気筒の吸
気マニホルドのみを集合させてその上流側に吸気
遮断弁を設置するようにする。 Also, as shown in Figure 3, the engine is 6 in series.
If cylinder engine 7 has #1 to #3 cylinders that can be deactivated, the intake manifold 8 is
It is sufficient to separate the valves and install the same intake cutoff valve 10 only on the upstream side of the intake manifold 8A of the #1 to #3 cylinders, and the operation can be stopped in the same manner as described above in other types of variable cylinder engines. Only the intake manifolds of the cylinders are assembled together, and an intake cutoff valve is installed on the upstream side.
第４図は上記のように設置した吸気遮断弁１０
を含むこの考案の可変気筒エンジンの遮音装置の
一実施例の構成図である。前記吸気遮断弁１０の
弁体１２を作動させるレバー１５は、この実施例
ではコントロールワイヤ１６を介してコントロー
ルシリンダ１７に接続されている。そして、この
コントロールシリンダ１７はエアタンク１９に貯
えられた高圧空気が電磁弁２４のオンにより導入
された時に、前記コントロールワイヤ１６を介し
てレバー１５を回転させ、弁体１２により吸気路
１８を閉じるように構成されている。 Figure 4 shows the intake cutoff valve 10 installed as described above.
1 is a configuration diagram of an embodiment of a sound insulation device for a variable cylinder engine of this invention, including: FIG. A lever 15 for actuating the valve body 12 of the intake cutoff valve 10 is connected to a control cylinder 17 via a control wire 16 in this embodiment. When the high pressure air stored in the air tank 19 is introduced by turning on the solenoid valve 24, the control cylinder 17 rotates the lever 15 via the control wire 16 and closes the intake passage 18 by the valve body 12. It is composed of
また、第４図において２１は燃料噴射ポンプで
あり、作動停止可能気筒の燃料噴射ノズル２６と
を結ぶ送油管２７の途中には電磁弁２３が設けら
れていて、これがオンすると前記作動停止可能気
筒への燃料供給が遮断されるようになつている。
さらに、この実施例では燃料供給停止気筒の吸、
排気弁２８を停止させるために油圧タペツト２２
が設けられており、電磁弁２５のオンにより油圧
タペツト２２への給油が止まると吸、排気弁２８
の作動が停止するようになつている。 Further, in FIG. 4, reference numeral 21 denotes a fuel injection pump, and a solenoid valve 23 is provided in the middle of an oil feed pipe 27 that connects the fuel injection nozzle 26 of the deactivatable cylinder. The fuel supply to the area has been cut off.
Furthermore, in this embodiment, the intake of the fuel supply stopped cylinder,
Hydraulic tappet 22 to stop exhaust valve 28
is provided, and when the oil supply to the hydraulic tappet 22 is stopped by turning on the solenoid valve 25, the suction and exhaust valves 28
has started to stop working.
そして、前記電磁弁２３，２４，２５にはそれ
ぞれ気筒数コントローラ２０より信号イ，ロ，ハ
が入力されるようになつており、この信号イ，
ロ，ハによりオンオフするようになつている。第
５図は前記信号イ，ロ，ハの波形図であり、オン
オフのタイミングを示している。この考案では気
筒数コントローラ２０により全気筒運転から減気
筒運転に移行する時は、まず気筒数コントローラ
２０から電磁弁２３にオン信号イが入力され、作
動停止可能気筒への燃料が遮断される。次いで電
磁弁２４にオン信号ロが入力されて吸気遮断弁１
０が閉じて燃料供給の停止された気筒への吸気を
遮断する。最後に、電磁弁２５にオン信号ハが入
力されて吸、排気弁２８が作動停止することにな
る。 Signals A, B, and C are input to the solenoid valves 23, 24, and 25 from the cylinder number controller 20, respectively.
It is designed to turn on and off depending on B and C. FIG. 5 is a waveform diagram of the signals A, B, and C, showing the on/off timing. In this invention, when the cylinder number controller 20 shifts from full cylinder operation to reduced cylinder operation, an on signal A is first inputted from the cylinder number controller 20 to the solenoid valve 23, and fuel is cut off to cylinders that can be deactivated. Next, the ON signal RO is input to the solenoid valve 24, and the intake cutoff valve 1 is turned on.
0 closes to cut off air intake to the cylinder to which fuel supply has been stopped. Finally, the ON signal C is input to the solenoid valve 25, and the intake and exhaust valves 28 are stopped.
また、逆に減気筒運転から全気筒運転に移行す
る時には、コントローラ２０からのオフ信号が第
５図に示すように電磁弁２５、電磁弁２４、電磁
弁２３の順に入力されるので、まず吸、排気弁２
８が作動復帰し、次いで吸気路１８が開かれ、最
後に燃料の供給再開が行なわれることになる。 Conversely, when shifting from reduced-cylinder operation to full-cylinder operation, the off signal from the controller 20 is input to the solenoid valve 25, solenoid valve 24, and solenoid valve 23 in this order as shown in FIG. , exhaust valve 2
8 returns to operation, then the intake passage 18 is opened, and finally the fuel supply is resumed.
従つて、この考案の遮音装置を備えた可変気筒
エンジンにおいては、気筒数変更時に吸、排気弁
の作動停止タイミングのずれにより吸気マニホル
ド方向への吹き返し音が発生しても、発生時には
必ず吸気遮断弁１０が閉じられているので、吹き
返し音は吸気マニホルドから外に洩れ出ることが
ない。 Therefore, in the variable cylinder engine equipped with the sound insulation device of this invention, even if blowback noise is generated in the direction of the intake manifold due to a difference in the timing of stopping the intake and exhaust valves when the number of cylinders is changed, the intake air is always shut off when the noise occurs. Since valve 10 is closed, no blowback noise can escape out of the intake manifold.
以上説明したように、この考案では可変気筒エ
ンジンの作動停止可能気筒の吸気マニホルド上流
側に吸気遮断弁を設け、作動気筒数変更時にはこ
の吸気遮断弁を、燃料供給停止気筒の吸、排気弁
の作動停止前に閉じ、吸、排気弁の作動復帰後に
開くように構成したことにより、可変気筒エンジ
ンにおける作動気筒数変更時に発生する吸気吹き
返し音の外部への洩れを防ぐことが可能となり、
運転者は可変気筒エンジンを搭載する車両を安全
に運転することができるという効果がある。 As explained above, in this invention, an intake cutoff valve is provided upstream of the intake manifold of the cylinder that can be deactivated in a variable cylinder engine, and when the number of activated cylinders is changed, this intake cutoff valve is used to close the intake and exhaust valves of the cylinder to which fuel supply is deactivated. By configuring the intake and exhaust valves to close before operation stops and open after the intake and exhaust valves return to operation, it is possible to prevent intake blowback noise that occurs when changing the number of operating cylinders in a variable cylinder engine from leaking to the outside.
This has the effect that the driver can safely drive a vehicle equipped with a variable cylinder engine.
なお、前記吸気遮断弁１０の弁体１２はこの実
施例ではバタフライ弁を用いているが、スライド
式のものでも良く、吸気路を遮断できる弁であれ
ば弁の種類は何でも良い。また、前記吸気遮断弁
は作動停止可能気筒の吸気マニホルド上流側に設
置したが、各吸気ポート内に設けても良いもので
ある。 Although the valve body 12 of the intake air cutoff valve 10 is a butterfly valve in this embodiment, it may be of a sliding type, and any type of valve may be used as long as it can shut off the intake passage. Furthermore, although the intake cutoff valve is installed upstream of the intake manifold of the cylinder whose operation can be stopped, it may be installed inside each intake port.
第１図はＶ型10気筒の可変気筒エンジンにこの
考案の遮音装置を取り付けた状態を示すエンジン
の概略平面図、第２図Ａはこの考案の吸気遮断弁
の一実施例の側面図、同ＢはＡのMM線における
断面図、第３図はこの考案の別の実施例を示す直
列６気筒の可変気筒エンジンの概略平面図、第４
図はこの考案の遮音装置の構成を示す説明図、第
５図は第４図のコントローラの制御出力を示す波
形図である。
１，７……エンジン、２，２Ａ，８，８Ａ……
吸気マニホルド、３，９……排気マニホルド、４
……常時作動バンク、５……作動停止可能バン
ク、６，１０……吸気遮断弁、１１……ケーシン
グ、１２……弁体、１４……回転軸、１５……レ
バー、１７……コントロールシリンダ、１８，２
３，２４……電磁弁、１９……エアタンク、２０
……コントローラ、２１……燃料噴射ポンプ、２
２……油圧タペツト。
Fig. 1 is a schematic plan view of a V-type 10-cylinder variable cylinder engine with the sound insulation device of this invention installed, and Fig. 2A is a side view of an embodiment of the intake cutoff valve of this invention. B is a sectional view taken along line MM of A; FIG. 3 is a schematic plan view of an in-line six-cylinder variable cylinder engine showing another embodiment of this invention;
The figure is an explanatory diagram showing the configuration of the sound insulation device of this invention, and FIG. 5 is a waveform diagram showing the control output of the controller of FIG. 4. 1,7...Engine, 2,2A,8,8A...
Intake manifold, 3, 9...Exhaust manifold, 4
... Constantly operating bank, 5 ... Operation stoppable bank, 6, 10 ... Intake cutoff valve, 11 ... Casing, 12 ... Valve body, 14 ... Rotating shaft, 15 ... Lever, 17 ... Control cylinder ,18,2
3, 24...Solenoid valve, 19...Air tank, 20
... Controller, 21 ... Fuel injection pump, 2
2...Hydraulic tappet.
Claims (1)
と、吸・排気弁動作停止装置とを設け、減気筒運
転に移行の際は、順次、燃料供給遮断装置、吸気
遮断弁、吸・排気弁動作停止装置の順で作動さ
せ、全気筒運転に移行の際は、前記の逆の順で作
動させる気筒数コントローラを設けたことを特徴
とする可変気筒エンジンの遮音装置。 Some cylinders are equipped with an intake cutoff valve, a fuel supply cutoff device, and an intake/exhaust valve operation stop device, and when shifting to reduced cylinder operation, the fuel supply cutoff device, intake cutoff valve, intake/exhaust valve operation stop device, 1. A sound insulation device for a variable cylinder engine, comprising a cylinder number controller that operates in the order of the valve operation stop device, and operates in the reverse order when shifting to all-cylinder operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14108682U JPS5945251U (en) | 1982-09-20 | 1982-09-20 | Sound insulation device for variable cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14108682U JPS5945251U (en) | 1982-09-20 | 1982-09-20 | Sound insulation device for variable cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5945251U JPS5945251U (en) | 1984-03-26 |
| JPS6320839Y2 true JPS6320839Y2 (en) | 1988-06-09 |
Family
ID=30315655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14108682U Granted JPS5945251U (en) | 1982-09-20 | 1982-09-20 | Sound insulation device for variable cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5945251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993003268A1 (en) * | 1991-07-30 | 1993-02-18 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method of controlling engine |
-
1982
- 1982-09-20 JP JP14108682U patent/JPS5945251U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993003268A1 (en) * | 1991-07-30 | 1993-02-18 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method of controlling engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5945251U (en) | 1984-03-26 |
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