JPS59201909A - Cooling device for exhaust controller - Google Patents

Cooling device for exhaust controller

Info

Publication number
JPS59201909A
JPS59201909A JP58075572A JP7557283A JPS59201909A JP S59201909 A JPS59201909 A JP S59201909A JP 58075572 A JP58075572 A JP 58075572A JP 7557283 A JP7557283 A JP 7557283A JP S59201909 A JPS59201909 A JP S59201909A
Authority
JP
Japan
Prior art keywords
piston
exhaust hole
opening
cooling
closing
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
Application number
JP58075572A
Other languages
Japanese (ja)
Other versions
JPH0235847B2 (en
Inventor
Chukei Asada
浅田 忠敬
Susumu Nagai
将 永井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP58075572A priority Critical patent/JPS59201909A/en
Publication of JPS59201909A publication Critical patent/JPS59201909A/en
Publication of JPH0235847B2 publication Critical patent/JPH0235847B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

PURPOSE:To install a piping, which cools a piston, only on the feed side, by a method wherein, in an exhaust device being of a type in which opening and closing of an exhaust port are effected by a piston, cooling water for cooling said exhaust device is discharged in a cooling chamber at the upper part of the piston. CONSTITUTION:An exhaust piston housing 1 is mounted to the upper part of of a combustion chamber 2 of a diesel engine, and an exhaust port opening and closing piston 3 and a hydraulically-operated piston 5, linked to said piston 3 through a rod 4, are housed in the housing 1. Further, a stopper 8, which locks the opening and closing piston 3 at a bottom deat point, and a control cylinder 9, driving the stopper 8, are located in an intermediate chamber 7 partitioned by a piston 5. A cooling water feed pipe 13 is joined to a double slide tube 14 connected to the opening and closing piston 3, and an internal tube 14b of the double slide tube 14 is connected to the opening and closing piston 3. In order to guide cooling water, discharged from the opening and closing piston 3, to a cooling chamber 15, an internal tube 17b of a double slide tube 17 is connected to the opening and closing piston 3.

Description

【発明の詳細な説明】 本発明は排気制御装置用冷却装置に関するものである。[Detailed description of the invention] The present invention relates to a cooling device for an exhaust gas control device.

掃気効率が良いことで知られるユニフロー掃気式ディー
ゼル機関において、排気孔の開閉をピストンで行なうピ
ストン制御孔型の排気装置は、従来機械的な結合による
駆動方式が採られており、この方式では排気孔開閉ピス
トンを駆動するための側棒、別のクランクと歯車等を用
いねばならず、構造が複雑になり、且つ機関の高さが増
す等の欠点があった。しかしこの方式は従来の排気弁駆
動方式と比較すると、弁棒、弁座シート部のメタルタッ
チが無いため、排気弁の′吹抜け、クラック等の事故か
ら解放される特長を有している。
In uniflow scavenging diesel engines, which are known for their high scavenging efficiency, the piston control hole type exhaust system, which uses a piston to open and close the exhaust hole, has conventionally been driven by a mechanical connection. This requires the use of a side rod, a separate crank, gears, etc. to drive the hole opening/closing piston, resulting in a complicated structure and an increase in the height of the engine. However, compared to the conventional exhaust valve drive system, this method has the advantage of being free from accidents such as blow-through and cracking of the exhaust valve because there is no metal contact between the valve stem and the valve seat.

本発明は上記の排気孔開閉ピストンにより排気孔を開閉
制御するようにした装置の特長を利用しつつ、ハウジン
グの排気孔周辺部及び排気孔開閉ピストンを極めて簡単
な構成で冷却できるようにすることを目的とする。
The present invention utilizes the features of the device in which the opening and closing of the exhaust hole is controlled by the exhaust hole opening/closing piston described above, while also making it possible to cool the area around the exhaust hole of the housing and the exhaust hole opening/closing piston with an extremely simple configuration. With the goal.

以下、本発明を実施の一例を示す図面に基づいて説明す
る。図において(υは排気孔制御用の排気ピストンハウ
ジングで、これは機関燃焼室(2)の上部に取り付けら
れ、このハウジング(1)のn i ニハ上下方向に移
動QJ 6ヒな排気孔開閉ピストン(3J及びこのピス
トン(3)の上方に段付きロッド(4)により結合され
た油i i′E DtJtピストン(5)が設けられ、
このピストン(5)によってその上部側に油室(6)が
、下部側に中間室(7)が形成されている。中間室(7
)には前記排気孔開閉ピストン(3)を、設定された下
死点でロックスるストッパー(8)及びこのストッパー
(8)を駆動する制御シリンダ(9)を備えている。そ
してこの制御シリンダ(9)は油圧室(9a)、ばね(
9b)、ビス)ン(9c)を備え、このピストン(9c
)と連動する連結リンク(9d)によってストッパー(
8)と結合されていストン室@と結合されている。(至
)は排気孔月間ピストン(3)を冷却するための冷却水
供給管で、排気孔開閉ヒストン(3)に接続された二重
スライド管θ◆に前記中間室(7)で結合されている。
Hereinafter, the present invention will be explained based on drawings showing an example of implementation. In the figure (υ is the exhaust piston housing for controlling the exhaust hole, which is attached to the upper part of the engine combustion chamber (2), and the piston that opens and closes the exhaust hole moves in the vertical direction of this housing (1). (An oil piston (5) connected by a stepped rod (4) is provided above 3J and this piston (3),
This piston (5) forms an oil chamber (6) on its upper side and an intermediate chamber (7) on its lower side. Middle room (7
) is equipped with a stopper (8) that locks the exhaust hole opening/closing piston (3) at a set bottom dead center, and a control cylinder (9) that drives this stopper (8). This control cylinder (9) has a hydraulic chamber (9a), a spring (
9b), a piston (9c), and a piston (9c).
) is connected to the stopper (
8) and is connected to the stone chamber @. (to) is a cooling water supply pipe for cooling the exhaust hole monthly piston (3), which is connected to the double slide pipe θ◆ connected to the exhaust hole opening/closing histone (3) in the intermediate chamber (7). There is.

二重スライド管α々の固定側外管(14a)は前記ハウ
ジング(1)の冷却室(至)を貫通して下端がハウジン
グ(λンの一部〔排気孔開閉ピストンストッパ一部αQ
〕に支持されている。又スライドする内管(14b)が
前記排気孔開閉ピストン(3)に接続されでいる。(ロ
)は!JF、気孔開閉ピストン(3)内を通って該ピス
トン(3)内の冷却に使用された冷却水を排出するため
の二重スライド管で、この二重スライド管(ロ)の固定
側外管(47a)はハウジング(1)の冷却室(ト)内
に位置して下端か排気孔開閉ピストンストッパ一部(ト
)に支持され、又スライドする内管(17b)は前記排
気孔開閉ピストン(3月こ接続されている。この二重ス
ライド管Qカの外管(17a)の上端は前記冷却室(至
)内において開口しており、排気孔′開閉ピストン(3
)の冷却に供された冷却水を冷却室に)内に排出し冷却
室(イ)を冷却するように構成している。
The fixed side outer pipe (14a) of the double slide pipe α passes through the cooling chamber (to) of the housing (1), and its lower end is a part of the housing (λ) [exhaust hole opening/closing piston stopper part αQ].
] is supported. Further, a sliding inner pipe (14b) is connected to the exhaust hole opening/closing piston (3). (b) Ha! JF is a double slide pipe for discharging the cooling water used for cooling inside the piston (3) through the pore opening/closing piston (3), and the fixed side outer pipe of this double slide pipe (b). (47a) is located in the cooling chamber (G) of the housing (1), and its lower end is supported by a part of the exhaust hole opening/closing piston stopper (G), and the sliding inner tube (17b) is located within the exhaust hole opening/closing piston (G). The upper end of the outer tube (17a) of this double slide tube Q is open in the cooling chamber (to), and the exhaust hole opening/closing piston (3)
The cooling water used for cooling the cooling chamber (a) is discharged into the cooling chamber (a) to cool the cooling chamber (a).

次に排気孔開閉ピストン(3)の動作について説明する
。排気孔月間ピストン(3)がハウジング(11下端の
排気孔(7)を閉じている状態では前記中間室(7)に
設けられたルu御シリンダ(9)の油圧室(9a)に圧
油が供給されており、その力によってピストン(9c)
はばね(9シ)を押圧し、連結リンク(9d)を介して
ストッパー(8)を段付きロッド(4)の段部(4a)
に係合さ也ている。このストッパー(8)によって燃焼
室内ガス圧力による上向きの力を押さえている。排気孔
(ト)を閉じている状態から囲く場合は、予じめ設定さ
れた時点で油圧室(90−への圧油を減らすと、ばね(
9b)の復元力によってストッパー(8)は引かれて段
ろ1きロッド(4)との係合が解除され、排気孔開閉ピ
ストン(3)は燃焼室内ガス圧力によって押し上げられ
て排気孔0榎が開かれると共に、前記油室(6)の作動
油は油圧作動ピストン(5)により昇圧される。昇圧さ
れた油圧は導管αQ及びカムローラ(ロ)上部の油圧ピ
ストン室(2)を介してカム軸αりに伝えられる。
Next, the operation of the exhaust hole opening/closing piston (3) will be explained. When the exhaust hole piston (3) closes the exhaust hole (7) at the lower end of the housing (11), pressure oil is supplied to the hydraulic chamber (9a) of the control cylinder (9) provided in the intermediate chamber (7). is supplied, and the piston (9c) is
Press the spring (9) and connect the stopper (8) to the step part (4a) of the stepped rod (4) via the connecting link (9d).
It is also engaged in. This stopper (8) suppresses the upward force caused by the gas pressure within the combustion chamber. When enclosing the exhaust hole (G) from the closed state, reduce the pressure oil to the hydraulic chamber (90-) at a preset point, and the spring (
The restoring force of 9b) pulls the stopper (8) and releases the engagement with the stage 1 rod (4), and the exhaust hole opening/closing piston (3) is pushed up by the gas pressure in the combustion chamber and closes the exhaust hole. is opened, and the pressure of the hydraulic oil in the oil chamber (6) is increased by the hydraulic piston (5). The increased hydraulic pressure is transmitted to the camshaft α via the conduit αQ and the hydraulic piston chamber (2) above the cam roller (B).

に)はカム1illll(IQに設けられたカムで、前
記カムローラaρと接当している。又排気孔に)を閉じ
る場合は排気孔開閉ピストン(3)が押し下げられる。
In order to close the cam 1illll (a cam provided in the IQ, which is in contact with the cam roller aρ, and the exhaust hole), the exhaust hole opening/closing piston (3) is pushed down.

即ち前記カムに)によってカムローラ(ロ)が押し上げ
らWし、カムローラCL])上部の油圧ピストン室(2
)で発生した圧力が油室(6)に伝えられる。その結果
、油圧作動ピストン(5)は下動し、排気孔開閉ピスト
ン(3)により排気孔(ト)を閉じる。排気孔開閉ピス
トン(3)か設定された下死点に到る時期に前記制御シ
リンダ(9)の油圧室(9a)に圧油を供給すると、前
記ストッパー(8ンが段付きロッド(4)の段部(4a
)に係合し、排気孔閉塞ストロークを完了する。尚図中
a+)は内燃機関のピストンである。
In other words, the cam roller (B) is pushed up by the cam), and the hydraulic piston chamber (2) in the upper part of the cam roller (CL) is pushed up.
) is transmitted to the oil chamber (6). As a result, the hydraulic piston (5) moves downward, and the exhaust hole opening/closing piston (3) closes the exhaust hole (G). When pressurized oil is supplied to the hydraulic chamber (9a) of the control cylinder (9) at the time when the exhaust hole opening/closing piston (3) reaches the set bottom dead center, the stopper (8) moves to the stepped rod (4). Stepped part (4a
) to complete the exhaust hole closing stroke. Note that a+) in the figure is a piston of the internal combustion engine.

以上述べた装置において、高温の燃焼ガスにさらされる
部分の冷却のために、前記ハウジング(りの排気孔周辺
部は当然のことな力)ら水冷却されており、冷却室(へ
)を備えている。ところで排気孔開閉ピストン(3)も
高温にさらされることから該ピストン(3)も冷却さ也
る必要がある。そこで本発明は排気孔月間ピストン(3
)のすぐ上部に冷却室0時があることに着目し、前述の
如く排気孔開閉ピストン(3)内をこ冷却水を供給して
該ピストン(,3)を冷却すると共に、該ピストン(3
〕冷却後の水を冷却室(ト)内に排出して冷却室αQ内
でも使用するようにし、冷却系統を単純化している。以
上のハウジング(1)の排気孔周辺部及び排気孔開閉ピ
ストン(3)の冷却はこれらか一定温度以上になったと
きに行なうようになっている。尚前記排気孔開閉ピスト
ン(3)に接続されるスライド可能な内管(14b) 
(17b)も高温の排気ガスにさらされることから、こ
れらは耐熱材で被覆されている。又図面では示されてい
ないが、前記冷却室(IQ内(こ排出された冷却水は冷
却室(ハ)内を冷却した後順次外部に排出するよう構成
されている。
In the above-mentioned device, in order to cool the parts exposed to high-temperature combustion gas, the housing (the area around the exhaust hole is naturally cooled) is water-cooled, and is equipped with a cooling chamber. ing. Incidentally, since the exhaust hole opening/closing piston (3) is also exposed to high temperatures, it is necessary to cool the piston (3) as well. Therefore, the present invention has developed an exhaust hole monthly piston (3
), paying attention to the fact that there is a cooling chamber 0 immediately above the piston (3), and supplying cooling water to the inside of the exhaust hole opening/closing piston (3) to cool the piston (3) as described above.
] The cooling system is simplified by discharging the cooled water into the cooling chamber (G) and using it also in the cooling chamber αQ. Cooling of the surrounding area of the exhaust hole of the housing (1) and the exhaust hole opening/closing piston (3) is performed when these temperatures reach a certain level or higher. Furthermore, a slidable inner pipe (14b) connected to the exhaust hole opening/closing piston (3)
Since (17b) is also exposed to high-temperature exhaust gas, these are covered with a heat-resistant material. Although not shown in the drawings, the cooling water discharged from the cooling chamber (IQ) is configured to cool the inside of the cooling chamber (c) and then sequentially discharged to the outside.

本発明は以上述べたように実施し得るものであり、排気
孔開閉ピストンを冷却するために供給された冷却水は該
ピストン上部の冷却室内に排出して冷却室内でも使用す
るようにしたため、排気孔開閉ピストン冷却のための冷
却水の外部につながる配管は供給側のみ設ければ良く、
構成を簡略化できる。
The present invention can be carried out as described above, and the cooling water supplied to cool the exhaust hole opening/closing piston is discharged into the cooling chamber above the piston and used also in the cooling chamber. Piping that connects to the outside of the cooling water for cooling the piston by opening and closing the hole only needs to be installed on the supply side.
The configuration can be simplified.

尚実施例で述べfこように、排気孔開閉ピストン(3)
lこ接続される内管(14b) (17b)を耐熱材で
被覆することにより、大げさな管保護装置の必要がなく
なり、排気孔開閉ピストンの軽量化が計れる。
As described in the example, the exhaust hole opening/closing piston (3)
By covering the connected inner pipes (14b) and (17b) with a heat-resistant material, there is no need for an exaggerated pipe protection device, and the weight of the exhaust hole opening/closing piston can be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は不発明の実施の一例を示す縦断面図である。 (1)・・・ハウジング、(2)・・・機関燃焼室、(
3)・・・排気孔開閉ピストン、(4)・・・段付きロ
ッド、(4a)−・・段部、(5)・・・油圧作動ピス
トン、(6)−・・油室、(7)・・・中間室、(8)
・・・ストッパー、(9)・・・制御シリンダ、(9a
)・・・油圧室、(9b月・・ばね、(9c)・・・ピ
ストン、(9d)・・・Nfaリンク、αす・・・導音
、(ロ)・・・カムローラ、(6)・・・油圧ピストン
室、榊・・・冷却水供給管、αψ・・二基スライド管、
(14a)・・・外管、(14b)・・・内管、照・−
・冷却室、(LG・・・ストッパ一部、(ロ)・・・二
重スライドfi、(17a)−・外管、(17b)・・
内管、(ト)・・・排気孔、cm・・・カム軸、(7)
・・・カム 代理人 銖本吸弘
The drawing is a longitudinal sectional view showing an example of the implementation of the invention. (1)...Housing, (2)...Engine combustion chamber, (
3)...Exhaust hole opening/closing piston, (4)...Stepped rod, (4a)...Step, (5)...Hydraulic operation piston, (6)...Oil chamber, (7 )...middle room, (8)
... Stopper, (9) ... Control cylinder, (9a
)...Hydraulic chamber, (9b...Spring, (9c)...Piston, (9d)...Nfa link, α...Sound guide, (B)...Cam roller, (6) ... Hydraulic piston chamber, Sakaki ... Cooling water supply pipe, αψ ... Double slide pipe,
(14a)...outer tube, (14b)...inner tube, light -
・Cooling chamber, (LG...part of stopper, (b)...double slide fi, (17a)--outer tube, (17b)...
Inner pipe, (g)...Exhaust hole, cm...Camshaft, (7)
...Cam agent Suhiro Kumoto

Claims (1)

【特許請求の範囲】 1、機関燃焼室の上部に排気孔制御用の排気ピストンハ
ウジングを設け、このハウジングの下端に形成した排気
孔を開閉する上下動可能な排気孔開閉ピストンを設け、
前記ハウジングの排気孔周辺部を水冷却するように構成
すると共に前記排気孔開閉ピストンをその内部に供給さ
れる冷却水にまり冷却するように構成し、排気孔開閉ピ
ストン制御孔型される冷却水を前記ハウジングの排気孔
周辺部冷却のために排気孔上部に形成された冷却室に排
出するように構成したことを特徴とする排気制御装置用
冷却装置。 2、排気孔開閉ピストンに接続された冷却水供給・排出
用の各管部の内、排気ガスにあらされる部分を耐熱材で
被覆したことを特徴とする特許請求の範囲第1項記載の
排気制御装置用冷却装置。
[Claims] 1. An exhaust piston housing for controlling the exhaust hole is provided in the upper part of the engine combustion chamber, and an exhaust hole opening/closing piston that is movable up and down to open and close the exhaust hole formed at the lower end of the housing is provided,
The surrounding area of the exhaust hole of the housing is configured to be water-cooled, and the exhaust hole opening/closing piston is configured to be cooled by cooling water supplied therein, and the cooling water is formed in the exhaust hole opening/closing piston control hole. A cooling device for an exhaust gas control device, characterized in that the cooling device is configured to discharge the water into a cooling chamber formed above the exhaust hole for cooling the surrounding area of the exhaust hole of the housing. 2. Of the cooling water supply/discharge pipes connected to the exhaust hole opening/closing piston, the parts exposed to exhaust gas are covered with a heat-resistant material. Cooling device for exhaust control equipment.
JP58075572A 1983-04-28 1983-04-28 Cooling device for exhaust controller Granted JPS59201909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58075572A JPS59201909A (en) 1983-04-28 1983-04-28 Cooling device for exhaust controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58075572A JPS59201909A (en) 1983-04-28 1983-04-28 Cooling device for exhaust controller

Publications (2)

Publication Number Publication Date
JPS59201909A true JPS59201909A (en) 1984-11-15
JPH0235847B2 JPH0235847B2 (en) 1990-08-14

Family

ID=13580029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58075572A Granted JPS59201909A (en) 1983-04-28 1983-04-28 Cooling device for exhaust controller

Country Status (1)

Country Link
JP (1) JPS59201909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549613U (en) * 1991-12-03 1993-06-29 大日本印刷株式会社 Gobel top type carton accessory container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023116860A (en) 2022-02-10 2023-08-23 Smc株式会社 Lift device with pad

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038662U (en) * 1973-07-31 1975-04-21
JPS5357310A (en) * 1976-11-02 1978-05-24 Mitsubishi Heavy Ind Ltd Exhaust device for internal combusion engine
JPS5865921A (en) * 1981-09-22 1983-04-19 エム・エイ・エヌ−ビ−・アンド・ダヴリュ・ディ−ゼル、ア−/エス Exhaust valve for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038662U (en) * 1973-07-31 1975-04-21
JPS5357310A (en) * 1976-11-02 1978-05-24 Mitsubishi Heavy Ind Ltd Exhaust device for internal combusion engine
JPS5865921A (en) * 1981-09-22 1983-04-19 エム・エイ・エヌ−ビ−・アンド・ダヴリュ・ディ−ゼル、ア−/エス Exhaust valve for internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549613U (en) * 1991-12-03 1993-06-29 大日本印刷株式会社 Gobel top type carton accessory container

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