JPS60261959A - Low noise crank case - Google Patents
Low noise crank caseInfo
- Publication number
- JPS60261959A JPS60261959A JP11557684A JP11557684A JPS60261959A JP S60261959 A JPS60261959 A JP S60261959A JP 11557684 A JP11557684 A JP 11557684A JP 11557684 A JP11557684 A JP 11557684A JP S60261959 A JPS60261959 A JP S60261959A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- crankcase
- crank case
- noise
- resistant
- 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
Classifications
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
- F02F7/008—Sound insulation
-
- 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
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ディーゼルエンジン特に艦艇向ケチイーゼル
エンジン川伝騒音形りブンクケースに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a stingy easel engine for diesel engines, particularly ships, and a bunk case with river noise.
艦艇用ディーゼルエンジンは耐衝撃性の要求からエンジ
ン本体のクランクケースに鋼を使用する必要があるが、
軽量化と鋳造容易化のため鋳物に白抜穴を数多く設けて
本体重量の軽減と薄肉部の面積低減を図って来ている。Diesel engines for ships require the use of steel for the crankcase of the engine body due to impact resistance requirements.
In order to reduce weight and make casting easier, many white holes have been provided in the casting to reduce the weight of the main body and the area of thin parts.
しかしながら、クランクケースを上記のように構成して
いる結果クランクケースの剛性が低下し、エンジン振動
に起因する騒音の発音体となる不具合があった。However, as a result of configuring the crankcase as described above, the rigidity of the crankcase decreases, resulting in a problem that the crankcase becomes a sounding body for noise caused by engine vibration.
本発明は上記従来装置の欠点を解消するためなされたも
ので、艦艇の水中放射雑音低減要求に対応した低騒音形
クランクケースを提供するのを目的としている。The present invention has been made in order to eliminate the drawbacks of the above-mentioned conventional devices, and an object of the present invention is to provide a low-noise crankcase that meets the requirements for reducing underwater radiation noise of ships.
上記目的を達成するため本発明では鋳鋼クランクケース
の隔壁の白抜穴にちょうど収まるような外形に形成され
しかも高分子材を挾んだ割振鋼板製の制振板をつく９そ
の外周に耐熱、耐油、緩衝コゞムを介して該白抜穴に嵌
め込んだことを特徴としている。In order to achieve the above object, in the present invention, a vibration damping plate made of a distributed steel plate is formed to fit into a blank hole in a bulkhead of a cast steel crankcase, and a polymeric material is sandwiched between the vibration damping plates. It is characterized by being fitted into the blank hole via an oil-resistant buffer coil.
エンジンよシ発生する振動がクランクケース本体内側か
ら外側に伝帳する途中で白抜穴内に嵌め込まれた割振板
で減衰され、低騒音化が実現でき又白抜穴の個数を多く
することによりクランクケース本体の軽量化が図られる
。The vibrations generated by the engine are attenuated by the distribution plate fitted into the blank holes as they travel from the inside of the crankcase body to the outside, reducing noise.In addition, by increasing the number of blank holes, the crankcase The weight of the case body can be reduced.
以下第１〜４図を参照して本発明の一実施例について説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第１〜４図は本発明に係るもので第１図はＶ形りランク
ケースの横断面図、第２図は第１図のＡ−Ａ断面図、第
３図は制振板、第４図は割振板の断面図を示す。Figures 1 to 4 are related to the present invention; Figure 1 is a cross-sectional view of a V-shaped rank case, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a damping plate, The figure shows a cross-sectional view of the divider plate.
鋳鋼製Ｖ形りランククースｌの隔壁部に白抜穴ｌａ 、
ｌｂを各隔壁毎に設け、さらに第４図のように高分子材
６，７を中央部に挾んだ制振鋼板製のプレス形２枚合せ
点溶接制振板２，４を、その外周に耐熱耐油緩衝ゴム３
，５を挾んで当該肉抜穴１ａ＊１ｂに嵌入する。なお白
抜穴１ａ、ｌｂの内周は鋳造の抜勾配αを付ける。A white hole la in the partition wall of the cast steel V-shaped rank kusu l,
lb is provided for each partition wall, and as shown in FIG. Heat resistant oil resistant buffer rubber 3
, 5 and fit them into the corresponding hollow holes 1a*1b. Note that the inner periphery of the blank holes 1a and lb has a casting draft angle α.
−次に上記実施例の作用について説明する。-Next, the operation of the above embodiment will be explained.
耐衝撃性の大きい鋳鋼を使用し、白抜穴を多く設けてク
ランクケース本体の剛性を低下させ、振動が起き易くな
った本体の白抜穴部１ａ、ｌｂに板厚の小さい割振板を
嵌合して制振板自身が容易に振動出来るようにし、減衰
の大きな割振材で振動を全て吸収させて全体としてクラ
ンクケース本体の振動を低く押える作用、及び中空の制
振板柔構造のため白抜穴の抜勾配付黒皮部に制振板の挿
込みが容易となる作用がある。Cast steel with high impact resistance is used, and many blank holes are provided to reduce the rigidity of the crankcase body, and thin dividing plates are fitted into the blank holes 1a and lb of the main body, which are prone to vibration. In addition, the damping plate itself can easily vibrate, and the damping plate itself absorbs all the vibrations with a large damping material, which suppresses the vibration of the crankcase body as a whole.The hollow damping plate has a flexible structure that makes it white The black part with draft angle of the extraction hole has the effect of making it easier to insert the damping plate.
箭述のとお９本発明の低騒音形クランクケースは、鋳鋼
製クランクケースの隔壁の適所に白抜穴を設け、この白
抜穴に高分子材を挾んだ制振鋼板製の割振板をその外周
に耐熱、耐油、緩衝ゴムを介してはめ込んだので、次の
ような効果が得られる。9. The low-noise crankcase of the present invention has blank holes at appropriate locations in the bulkhead of the cast steel crankcase, and a damping steel divider plate with a polymer material sandwiched in the blank hole. Since it is fitted around the outer periphery with heat-resistant, oil-resistant, and cushioning rubber, the following effects can be obtained.
（１） エンジンの振動がクランクケース本体内側から
外側に伝播する途中で割振板で減衰され低騒音化が図ら
れる。(1) Engine vibration is attenuated by the divider plate as it propagates from the inside of the crankcase body to the outside, reducing noise.
（２） 白抜穴の個数が多いので、クランクケース本オ
。ア４．ヵ８Ｇ、わ、。 ）
（３）２つ壁が交叉する熱点部が白抜出来るので鋳造欠
陥が少なくなシ、鋳造コストの低減が図られる。(2) There are many white holes, so the crankcase is real. A4. Ka8G, wow. (3) Since the hot spot where the two walls intersect can be blanked out, there are fewer casting defects and the casting cost can be reduced.
第１図乃至第４図は本ｅ８Ｉ４に係るもので、第１図は
Ｖ型エンジンのクランクケース横断面図、第２図は第１
図のＡ−Ａ断面図、第３図は割振板の正面図、第４図は
制振板の断面図である。
１・・・クランクケース、１ａ、１ｂ・・・白抜穴、２
．４・・・制振板、３，５・・・耐熱、耐油、緩衝ゴム
、６．７・・・高分子材。
第１図
−Ａ
第２図Figures 1 to 4 relate to this e8I4, with Figure 1 being a cross-sectional view of the crankcase of the V-type engine, and Figure 2 being the cross-sectional view of the crankcase of the V-type engine.
3 is a front view of the damping plate, and FIG. 4 is a sectional view of the damping plate. 1... Crank case, 1a, 1b... White hole, 2
．． 4... Vibration damping plate, 3, 5... Heat resistant, oil resistant, buffer rubber, 6.7... Polymer material. Figure 1-A Figure 2
Claims (1)
らにこの白抜穴に高分子材を挾んだ割振鋼板製の割振板
をその外周に耐熱耐油緩衝ゴムを挾んで嵌め込んだこと
を特徴とする低騒音形クランクケース。A blank hole was created at the appropriate location in the bulkhead of the cast steel crankcase, and a split plate made of split steel plate with a polymer material sandwiched between the heat-resistant and oil-resistant buffer rubber was inserted into the blank hole. Features a low-noise crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11557684A JPS60261959A (en) | 1984-06-07 | 1984-06-07 | Low noise crank case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11557684A JPS60261959A (en) | 1984-06-07 | 1984-06-07 | Low noise crank case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60261959A true JPS60261959A (en) | 1985-12-25 |
| JPH0413548B2 JPH0413548B2 (en) | 1992-03-10 |
Family
ID=14665991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11557684A Granted JPS60261959A (en) | 1984-06-07 | 1984-06-07 | Low noise crank case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60261959A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0851109A1 (en) * | 1996-12-27 | 1998-07-01 | Honda Giken Kogyo Kabushiki Kaisha | Water-cooled type internal combustion engine |
-
1984
- 1984-06-07 JP JP11557684A patent/JPS60261959A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0851109A1 (en) * | 1996-12-27 | 1998-07-01 | Honda Giken Kogyo Kabushiki Kaisha | Water-cooled type internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0413548B2 (en) | 1992-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4465041A (en) | Cylinder block of internal combustion engine | |
| EP0715688B1 (en) | An internal combustion engine | |
| JPH0217212Y2 (en) | ||
| JPS6316893Y2 (en) | ||
| JPS58128546A (en) | Flywheel for use in four-cylinder engine arranged in series | |
| JPS60261959A (en) | Low noise crank case | |
| US4473042A (en) | Cylinder block | |
| US4594917A (en) | Crank assembly for an internal combustion engine | |
| JP6866857B2 (en) | Crankshaft of V6 engine | |
| JP2007225310A (en) | Gear noise measuring apparatus | |
| EP0065104B1 (en) | Internal combustion engine with bearing beam structure | |
| JPS6117231Y2 (en) | ||
| JPS6313407Y2 (en) | ||
| JPS642779B2 (en) | ||
| JPS63111241A (en) | Cover structure for engine transmission system | |
| JPS6029657Y2 (en) | Low noise automotive engine | |
| JPS5830109Y2 (en) | engine cylinder block | |
| JPS6224775Y2 (en) | ||
| JP3707147B2 (en) | Crankcase structure of internal combustion engine | |
| JPS5919798Y2 (en) | Cylinder block of multi-cylinder engine | |
| JPH075237Y2 (en) | Engine cylinder block structure | |
| JP2023165228A (en) | Gear device for internal combustion engine | |
| JPS6026222Y2 (en) | Cylinder block vibration damping structure | |
| JPH0245480Y2 (en) | ||
| JPH059475Y2 (en) |