JPS6338540B2 - - Google Patents
Info
- Publication number
- JPS6338540B2 JPS6338540B2 JP15555780A JP15555780A JPS6338540B2 JP S6338540 B2 JPS6338540 B2 JP S6338540B2 JP 15555780 A JP15555780 A JP 15555780A JP 15555780 A JP15555780 A JP 15555780A JP S6338540 B2 JPS6338540 B2 JP S6338540B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- spark plug
- water
- engine
- radiator
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
- F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】
本発明は自動二輪車に搭載したエンジン特に水
冷式エンジンの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 engine mounted on a motorcycle, particularly a water-cooled engine.
水冷式エンジンは、一般にシリンダの軸線を車
両の進行方向前側に傾斜させて搭載し、ラジエー
タをエンジンよりも車両の進行方向前側の上方に
配置している。そしてエンジンのシリンダヘツド
にも水ジヤケツトが設けられていて、冷却水に空
気が混ざると、気泡となつてジヤケツト内を上昇
し、最上部であるシリンダヘツドの水ジヤケツト
に空気だまりを生じる。この空気を抜くために一
般にシリンダヘツドの上部に栓付の空気抜き穴を
備えている。 A water-cooled engine is generally mounted with the axis of the cylinder inclined toward the front in the direction of travel of the vehicle, and the radiator is disposed above the engine on the front side in the direction of travel of the vehicle. The cylinder head of the engine is also provided with a water jacket, and when air mixes with the cooling water, it becomes bubbles and rises inside the jacket, creating an air pocket in the water jacket at the top of the cylinder head. In order to remove this air, an air release hole with a plug is generally provided at the top of the cylinder head.
シリンダヘツドの上部にはスパークプラグが取
付けられている。そのためシリンダヘツドの水ジ
ヤケツトとラジエータを結ぶ水ホースを、スパー
クプラグを越えて配管すると、スパークプラグの
交換等のメンテナンスに際しじやまになる。 A spark plug is attached to the top of the cylinder head. Therefore, if the water hose connecting the cylinder head water jacket and the radiator is routed beyond the spark plug, it will be difficult to perform maintenance such as replacing the spark plug.
自動二輪車の場合、エンジンは一般に露出して
いるから、水ホースを上記のように配管すると、
ホースが長くなり、前記シリンダヘツド上部の栓
付空気抜き穴と相まつて外見上見苦しい。 In the case of motorcycles, the engine is generally exposed, so if you connect the water hose as shown above,
The hose becomes long, and together with the plugged air vent hole at the top of the cylinder head, it looks unsightly.
そして走行中、前輪がはね上げた泥や水がスパ
ークプラグの基部の周囲にたまると沿面放電を生
じる虞があり、エンジンの点火に支障を来す。 During driving, if mud or water thrown up by the front wheels accumulates around the base of the spark plug, there is a risk of creeping discharge, which will interfere with engine ignition.
またシリンダヘツドの天井のスパークプラグ取
付部付近に余分の肉厚があると、スパークプラグ
の冷却が十分に行われない。スパークプラグの冷
却が悪いとエンジンの性能を低下させることがあ
る。 Also, if there is excess wall thickness near the spark plug mounting part on the ceiling of the cylinder head, the spark plug will not be cooled sufficiently. Poor spark plug cooling can reduce engine performance.
本発明は上記の問題点に鑑み、空気抜き穴がな
くても水ジヤケツトに空気だまりを生じさせない
冷却装置を提供することを目的とする。更にスパ
ークプラグの冷却性の向上、およびスパークプラ
グのメンテナンスを容易にすると共にエンジンの
周りの外観をよくすることを目的とする。 SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a cooling device that does not create air pockets in a water jacket even without air vent holes. Further, the purpose is to improve the cooling performance of the spark plug, facilitate the maintenance of the spark plug, and improve the appearance of the surrounding area of the engine.
すなわち、自動二輪車に水冷式エンジン１を、
シリンダ８の軸線を車両の進行方向前側に傾斜さ
せて搭載し、シリンダヘツド３の上面の略中央に
スパークプラグ１０を取付け、ラジエータ２をエ
ンジン１よりも車両の進行方向前側の上方に配置
し、シリンダヘツド３の上面のスパークプラグ１
０よりもラジエータ側に寄つた位置に、水ホース
５を接続する冷却水出口４を設け、シリンダヘツ
ド３の天井９１を冷却水出口４に向つて水平面よ
りも高く傾斜させると共に、その天井９１を略等
しい肉厚で形成したことを特徴とする。 In other words, if a water-cooled engine 1 is installed in a motorcycle,
The cylinder 8 is mounted with its axis inclined toward the front in the direction of travel of the vehicle, the spark plug 10 is installed approximately in the center of the upper surface of the cylinder head 3, and the radiator 2 is placed above the engine 1 on the front side in the direction of travel of the vehicle. Spark plug 1 on top of cylinder head 3
The cooling water outlet 4 to which the water hose 5 is connected is provided at a position closer to the radiator side than the cylinder head 3, and the ceiling 91 of the cylinder head 3 is inclined higher than the horizontal plane toward the cooling water outlet 4. It is characterized by being formed with approximately equal wall thickness.
第１図は本発明冷却装置を備えた水冷式２サイ
クルエンジンを搭載した自動二輪車の前部の側面
図にして、エンジン１は、車体フレーム１１にシ
リンダ８の軸線を車両の進行方向前側に傾斜させ
て取付けられている。 FIG. 1 is a side view of the front of a motorcycle equipped with a water-cooled two-stroke engine equipped with the cooling device of the present invention. Let it be installed.
そして上記エンジン１に対し車両の進行方向前
側の上方にラジエータ２を設置し、シリンダヘツ
ド３の上面のラジエータ寄り位置に設けた冷却水
出口４とラジエータ２の上部をホース５でつない
でいる。６は、ポンプ７を介してラジエータ２の
下部とシリンダ８の水ジヤケツトを結んだホース
である。 A radiator 2 is installed above the engine 1 on the front side in the direction of travel of the vehicle, and a hose 5 connects the upper part of the radiator 2 to a cooling water outlet 4 provided at a position close to the radiator on the upper surface of the cylinder head 3. A hose 6 connects the lower part of the radiator 2 and the water jacket of the cylinder 8 via a pump 7.
シリンダヘツド３の水ジヤケツト９の天井９１
（第３図示）は、冷却水出口４の方に向つて水平
面よりも高く傾斜している。シリンダヘツド３の
上面の略中央にスパークプラグ１０が取付けられ
ている。 Ceiling 91 of water jacket 9 of cylinder head 3
(shown in the third figure) is inclined higher than the horizontal plane toward the cooling water outlet 4. A spark plug 10 is mounted approximately in the center of the upper surface of the cylinder head 3.
ラジエータ２で冷却された水は、ポンプ７によ
りホース６→シリンダ８の水ジヤケツト→シリン
ダヘツド３の水ジヤケツト９→冷却水出口４→ホ
ース５→ラジエータ２の順に循環する。 The water cooled by the radiator 2 is circulated by the pump 7 in the order of the hose 6 -> the water jacket of the cylinder 8 -> the water jacket 9 of the cylinder head 3 -> the cooling water outlet 4 -> the hose 5 -> the radiator 2.
冷却水に混ざつた空気は気泡となつてシリンダ
ヘツド３の水ジヤケツト９に到達するが、その水
ジヤケツト９の天井９１が冷却水出口５に向つて
高く傾斜しているから、気泡はその天井９１に案
内されてホース５の方に流れ、ラジエータ２に入
るもので、シリンダヘツド３の水ジヤケツト９の
中に空気がたまることはない。 The air mixed with the cooling water turns into bubbles and reaches the water jacket 9 of the cylinder head 3, but since the ceiling 91 of the water jacket 9 is highly sloped toward the cooling water outlet 5, the air bubbles reach the water jacket 9 of the cylinder head 3. 91, the water flows toward the hose 5 and enters the radiator 2, so that air does not accumulate in the water jacket 9 of the cylinder head 3.
そしてシリンダヘツド３の水ジヤケツト９とラ
ジエータ２を結ぶホース５を接続する冷却水出口
４が、ラジエータ２の方に寄つているから、ホー
ス５がスパークプラグ１０の上を通らない。すな
わちスパークプラグ１０の上方ないし後方は広く
開いている。 Since the cooling water outlet 4 connecting the hose 5 connecting the water jacket 9 of the cylinder head 3 and the radiator 2 is closer to the radiator 2, the hose 5 does not pass over the spark plug 10. That is, the upper or rear portion of the spark plug 10 is wide open.
図中１２はフロントフオーク、１３はシート、
１４は燃料タンク、１５はラジエータサイドカバ
ー、１６は排気管である。 In the figure, 12 is the front fork, 13 is the seat,
14 is a fuel tank, 15 is a radiator side cover, and 16 is an exhaust pipe.
エンジン１を、シリンダ８の軸線を前傾させて
車体フレーム１１に取付ける場合、シリンダヘツ
ド３の水ジヤケツト９の天井９１が冷却水出口４
に向つて低くならないように、エンジン１の取付
傾斜角度を決める。すなわち水ジヤケツトの天井
９１は、冷却水出口４側に、水平面より高く前上
がりに傾くように取付ける。 When the engine 1 is mounted on the vehicle body frame 11 with the axis of the cylinder 8 tilted forward, the ceiling 91 of the water jacket 9 of the cylinder head 3 is connected to the cooling water outlet 4.
The installation inclination angle of the engine 1 is determined so that it does not become lower toward the end. That is, the ceiling 91 of the water jacket is attached to the cooling water outlet 4 side so as to be higher than the horizontal plane and tilted forward.
第２図はシリンダヘツド３の一実施例を示す斜
視図、第３図はその中央縦断面図で、冷却水出口
４に向つて高く傾斜する天井９１は中央部分にの
み設けられていて、その両側の部分９２は、中央
部分９１よりも低くて平らである。 FIG. 2 is a perspective view showing an embodiment of the cylinder head 3, and FIG. 3 is a longitudinal cross-sectional view of the center thereof. The side portions 92 are lower and flatter than the central portion 91.
シリンダヘツド３の水ジヤケツト９の天井９
１，９２を上記のように構成すると、エンジン全
体の形状は大きく変わることがない。しかも水ジ
ヤケツト９の容積の増加は僅少であるから、冷却
水の増量は少なくて済む。 Ceiling 9 of water jacket 9 of cylinder head 3
1 and 92 as described above, the overall shape of the engine does not change significantly. Moreover, since the increase in the volume of the water jacket 9 is small, the amount of cooling water only needs to be increased by a small amount.
シリンダヘツド３の上面の前上がりに傾斜して
いる部分の略中央に凹部があり、その凹部の底面
にスパークプラグ取付穴１７が開いている。その
結果、穴１７の周囲の前側と両側にそれぞれ壁３
１，３２が形成され、それらの壁３１，３２によ
つてスパークプラグ１０の下部の前半周が囲まれ
る。従つてスパークプラグ１０の周囲に泥等がた
まりにくく、たまつても容易に排除される。 There is a recessed portion approximately in the center of the upwardly sloping portion of the upper surface of the cylinder head 3, and a spark plug mounting hole 17 is opened in the bottom surface of the recessed portion. As a result, walls 3 are formed on the front side and both sides of the hole 17, respectively.
1 and 32 are formed, and the lower front half of the spark plug 10 is surrounded by these walls 31 and 32. Therefore, mud and the like are less likely to accumulate around the spark plug 10, and even if it does, it is easily removed.
なおエンジン１の一側に排気管その他の部材を
近接して設けた場合は、その部材が泥よけの役を
するので、シリンダヘツド３の上面におけるスパ
ークプラグ１０の周囲の排気管等の部材が位置す
る側の壁は省略することができる。すなわちスパ
ークプラグ１０の下部を囲繞する壁部は車両の進
行方向前側と少なくとも左右のいずれか一側とに
あれば足りるものである。 Note that when an exhaust pipe or other member is provided close to one side of the engine 1, the member acts as a mudguard, so the exhaust pipe or other member around the spark plug 10 on the upper surface of the cylinder head 3 is The wall on the side where is located can be omitted. That is, it is sufficient that the wall surrounding the lower portion of the spark plug 10 is located at the front side in the direction of travel of the vehicle and at least on either the left or right side.
本発明水冷式エンジンの冷却装置は上記のよう
に、自動二輪車に水冷式エンジン１を、シリンダ
８の軸線を車両の進行方向前側に傾斜させて搭載
し、シリンダヘツド３の上面の略中央にスパーク
プラグ１０を取付け、ラジエータ２をエンジン１
よりも車両の進行方向前側の上方に配置し、シリ
ンダヘツド３の上面のスパークプラグ１０よりも
ラジエータ側に寄つた位置に、水ホース５を接続
する冷却水出口４を設け、シリンダヘツド３の天
井９１を冷却水出口４に向つて水平面よりも高く
傾斜させたものであるから、シリンダヘツド３の
水ジヤケツト９内に空気がたまることがなくて、
シリンダヘツド３に空気抜きのための特別な構造
を設ける必要がない。従つてシリンダヘツド３の
構造が簡素化される。 As described above, in the water-cooled engine cooling system of the present invention, the water-cooled engine 1 is mounted on a motorcycle with the axis of the cylinder 8 inclined toward the front in the direction of travel of the vehicle, and a spark is generated approximately at the center of the upper surface of the cylinder head 3. Install plug 10 and connect radiator 2 to engine 1.
A cooling water outlet 4 to which a water hose 5 is connected is provided above the front side of the vehicle in the traveling direction of the cylinder head 3 and closer to the radiator than the spark plug 10 on the top surface of the cylinder head 3. 91 is inclined higher than the horizontal plane toward the cooling water outlet 4, so that air does not accumulate in the water jacket 9 of the cylinder head 3.
There is no need to provide the cylinder head 3 with a special structure for air venting. Therefore, the structure of the cylinder head 3 is simplified.
シリンダヘツド３の天井９１の冷却水出口４と
ラジエータ２をつなぐ水ホース５がスパークプラ
グ１０の上を通らないため、スパークプラグ１０
の上方ないし後方が広く開放される。従つてスパ
ークプラグ１０の着脱交換等のメンテナンスが容
易である。またシリンダが前に傾いていることと
相まつて水ホース５が短いもので足りるので、前
記空気抜き構造、例えば栓付空気抜き穴等を必要
としないことも合せて外観体裁が良い。 Since the water hose 5 connecting the cooling water outlet 4 of the ceiling 91 of the cylinder head 3 and the radiator 2 does not pass over the spark plug 10, the spark plug 10
The upper and rear parts are wide open. Therefore, maintenance such as attachment/detachment and replacement of the spark plug 10 is easy. In addition, since the cylinder is tilted forward and the water hose 5 only needs to be short, the air vent structure, such as an air vent hole with a stopper, is not required, and the appearance is good.
更に本発明は、シリンダヘツド３の天井９１を
略等しい肉厚で形成したから、すなわちスパーク
プラグ１０の基部周辺に余分な肉がなくて水ジヤ
ケツト９内の水によるスパークプラグ１０の基部
周りの冷却作用が良好である。 Furthermore, in the present invention, since the ceiling 91 of the cylinder head 3 is formed with substantially the same thickness, that is, there is no excess thickness around the base of the spark plug 10, and the area around the base of the spark plug 10 is cooled by the water in the water jacket 9. It works well.
実施例のようにシリンダヘツド３の天井９１の
一部がスパークプラグ取付座を囲繞するように構
成すると、スパークプラグ１０の基部の周囲に塵
埃・泥等が付きにくいもので、エンジンが露出し
て取付けられる自動二輪車の水冷式エンジンの冷
却装置として効果がある。 If a part of the ceiling 91 of the cylinder head 3 surrounds the spark plug mounting seat as in the embodiment, it is difficult for dust, mud, etc. to accumulate around the base of the spark plug 10, and the engine is not exposed. It is effective as a cooling system for the water-cooled engine of the motorcycle to which it is installed.
第１図は本発明冷却装置を備えた水冷式エンジ
ンを搭載した自動二輪車の要部の側面図、第２図
はそのエンジンのシリンダヘツドの斜視図、第３
図はそのシリンダヘツドの中央縦断面図。
１は水冷式エンジン、２はラジエータ、３はシ
リンダヘツド、４は冷却水出口、５，６は水ホー
ス、７はポンプ、８はシリンダ、９はシリンダヘ
ツドの水ジヤケツト、９１はシリンダヘツドの天
井、１０はスパークプラグ、１７はプラグ取付
穴。
Figure 1 is a side view of the main parts of a motorcycle equipped with a water-cooled engine equipped with the cooling device of the present invention, Figure 2 is a perspective view of the cylinder head of the engine, and Figure 3 is a perspective view of the cylinder head of the engine.
The figure is a central vertical sectional view of the cylinder head. 1 is a water-cooled engine, 2 is a radiator, 3 is a cylinder head, 4 is a cooling water outlet, 5 and 6 are water hoses, 7 is a pump, 8 is a cylinder, 9 is a cylinder head water jacket, 91 is a cylinder head ceiling , 10 is a spark plug, 17 is a plug installation hole.
Claims (1)
軸線を車両の進行方向前側に傾斜させて搭載し、
シリンダヘツドの上面の略中央にスパークプラグ
を取付け、ラジエータをエンジンよりも車両の進
行方向前側の上方に配置し、シリンダヘツドの上
面のスパークプラグよりもラジエータ側に寄つた
位置に、水ホースを接続する冷却水出口を設け、
シリンダヘツドの天井を冷却水出口に向つて水平
面よりも高く傾斜させると共に、その天井を略等
しい肉厚で形成したことを特徴とする自動二輪車
における水冷式エンジンの冷却装置。 ２ シリンダヘツドの天井の一部がスパークプラ
グ取付座を囲繞して形成されている特許請求の範
囲第１項記載の自動二輪車における水冷式エンジ
ンの冷却装置。[Claims] 1. A water-cooled engine is mounted on a motorcycle with the axis of the cylinder inclined toward the front in the direction of travel of the vehicle,
Install the spark plug approximately in the center of the top of the cylinder head, place the radiator above the engine in the forward direction of vehicle travel, and connect the water hose to a position closer to the radiator than the spark plug on the top of the cylinder head. Provide a cooling water outlet to
A cooling device for a water-cooled engine in a motorcycle, characterized in that a ceiling of a cylinder head is inclined higher than a horizontal plane toward a cooling water outlet, and the ceiling is formed with substantially equal wall thickness. 2. A cooling device for a water-cooled engine in a motorcycle according to claim 1, wherein a part of the ceiling of the cylinder head is formed to surround a spark plug mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15555780A JPS5779230A (en) | 1980-11-05 | 1980-11-05 | Cooling device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15555780A JPS5779230A (en) | 1980-11-05 | 1980-11-05 | Cooling device for engine |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10826489A Division JPH0278751A (en) | 1989-04-27 | 1989-04-27 | Cooling device for water cooling type 2-cycle engine of motor-bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5779230A JPS5779230A (en) | 1982-05-18 |
| JPS6338540B2 true JPS6338540B2 (en) | 1988-08-01 |
Family
ID=15608657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15555780A Granted JPS5779230A (en) | 1980-11-05 | 1980-11-05 | Cooling device for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5779230A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4767875B2 (en) * | 2007-02-15 | 2011-09-07 | リンナイ株式会社 | Pilot type on-off valve |
-
1980
- 1980-11-05 JP JP15555780A patent/JPS5779230A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5779230A (en) | 1982-05-18 |
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