JPH0134295B2 - - Google Patents
Info
- Publication number
- JPH0134295B2 JPH0134295B2 JP58187790A JP18779083A JPH0134295B2 JP H0134295 B2 JPH0134295 B2 JP H0134295B2 JP 58187790 A JP58187790 A JP 58187790A JP 18779083 A JP18779083 A JP 18779083A JP H0134295 B2 JPH0134295 B2 JP H0134295B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- internal combustion
- frame
- combustion engine
- cylinder block
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 229920003002 synthetic resin Polymers 0.000 claims description 17
- 239000000057 synthetic resin Substances 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 229920001187 thermosetting polymer Polymers 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 9
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
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
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
-
- 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
- F02F1/002—Integrally formed cylinders and cylinder heads
-
- 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
- F02F7/0085—Materials for constructing engines or their parts
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/20—SOHC [Single overhead camshaft]
-
- 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
- F02F7/006—Camshaft or pushrod housings
- F02F2007/0063—Head bolts; Arrangements of cylinder head bolts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は主として自動車等の車両用に好適な、
軽量かつ堅牢な、内燃機関のシリンダブロツクに
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is mainly suitable for use in vehicles such as automobiles.
This invention relates to a lightweight and robust cylinder block for an internal combustion engine.
一般に内燃機関の機関本体、すなわちシリンダ
ブロツク、シリンダヘツド、クランクケース等は
高い強度、耐熱性、耐摩性等の物性が要求される
ため、従来ではそれらは鋳鉄、アルミ合金等の金
属材料により構成されている。 In general, the main body of an internal combustion engine, i.e., the cylinder block, cylinder head, crankcase, etc., is required to have high physical properties such as high strength, heat resistance, and wear resistance. ing.
ところで自動車用等の内燃機関では、その性能
向上を図るために、内燃機関の軽量化が大きな課
題である。そこで最近では内燃機関の一部を比重
の小さい合成樹脂材、セラミツク材等で形成する
ようにしたものが提案されているが、それらは何
れもきわめて小部分であつて内燃機関の重量軽減
に寄与するには至らず、また該機関の必要とする
強度、耐熱性等の物性が得られず、またコスト高
となつて実用に供し得るものではない。 By the way, in order to improve the performance of internal combustion engines for automobiles and the like, reducing the weight of the internal combustion engine is a major issue. Recently, it has been proposed that parts of the internal combustion engine be made of synthetic resin materials, ceramic materials, etc. with low specific gravity, but these are all extremely small parts and contribute to reducing the weight of the internal combustion engine. Moreover, the physical properties such as strength and heat resistance required by the engine cannot be obtained, and the cost is too high to be put to practical use.
そこで本発明は内燃機関本体のうちでもシリン
ダブロツクは比較的高加熱部分が少ないこと、お
よび近年前記物性の優れた熱硬化性合成樹脂材の
開発に着目し、強度、耐熱性等の物性を損わずに
大幅な軽量化を可能にした、内燃機関のシリンダ
ブロツクを提供することを目的とするものであ
る。 Therefore, the present invention focuses on the fact that the cylinder block has relatively few highly heated parts in the main body of an internal combustion engine, and the recent development of thermosetting synthetic resin materials with excellent physical properties. The object of the present invention is to provide a cylinder block for an internal combustion engine that can be significantly reduced in weight.
以下、第１〜３図により本発明を２気筒内燃機
関に実施した場合の実施例について説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a two-cylinder internal combustion engine will be described below with reference to FIGS. 1 to 3.
第１図において、内燃機関本体Ｅは、シリンダ
ブロツク１、その上面に重合結合されるシリンダ
ヘツド２、およびその下面に結合されるクランク
ケース３とよりなる。 In FIG. 1, an internal combustion engine main body E consists of a cylinder block 1, a cylinder head 2 which is superimposed on the upper surface of the cylinder block 1, and a crankcase 3 which is connected to the lower surface of the cylinder block 1.
前記シリンダブロツク１はその必要な強度、耐
熱性、耐摩性等を保育させるため、その骨格とな
る部分、およびピストン４の摺合されるシリンダ
スリーブ５とを鋳鉄等の金属材料により、また残
余の部分をフエノール樹脂等の熱硬化性合成樹脂
材により構成する。 In order to maintain the necessary strength, heat resistance, abrasion resistance, etc. of the cylinder block 1, its skeleton and the cylinder sleeve 5 on which the piston 4 is slid are made of a metal material such as cast iron, and the remaining part is made of a metal material such as cast iron. is made of thermosetting synthetic resin material such as phenolic resin.
次に主に第３図を参照してシリンダブロツク１
の骨格となる骨格フレームＦの構造について説明
する。 Next, mainly referring to FIG.
The structure of the skeleton frame F, which is the skeleton of , will be explained.
骨格フレームＦは鋳鉄により立方体形状に形成
され、その外周部に間隔をあけて配置される合計
６本の支柱６と、相隣れる支柱６の側部間を一体
に連結するリブ板７と、下面を被覆する底壁８
と、横方向に並ぶ各２本の支柱６の下部間を連結
するクランク軸受上半部９とより構成される。 The skeletal frame F is formed into a cube shape from cast iron, and has a total of six columns 6 arranged at intervals on its outer periphery, and a rib plate 7 that integrally connects the sides of the adjacent columns 6. Bottom wall 8 covering the lower surface
and a crank bearing upper half 9 that connects the lower portions of each of the two columns 6 arranged in the horizontal direction.
前記各支柱６は円柱状に形成されていてその中
央部に、上下端に開口するボルト挿通孔１０が穿
設され、さらにその上下端は径大なボス部６ａ，
６ｂに形成されている。前記リブ板７の中央部に
は窓孔１１が開けられており、骨格フレームＦ全
体の重量が軽減される。各気筒毎の底壁８の中央
部には嵌込孔１２が形成され、この嵌込孔１２に
後に詳述するシリンダスリーブ５の嵌合雄部５ａ
が嵌合される。また前記クランク軸受上半部９は
肉厚に形成され、その下面には半円状の軸受面が
形成される。 Each of the pillars 6 is formed in a cylindrical shape, and a bolt insertion hole 10 that opens at the upper and lower ends is bored in the center thereof, and furthermore, the upper and lower ends have large-diameter boss portions 6a,
6b. A window hole 11 is formed in the center of the rib plate 7, and the weight of the entire skeleton frame F is reduced. A fitting hole 12 is formed in the center of the bottom wall 8 of each cylinder, and a fitting male portion 5a of the cylinder sleeve 5, which will be described in detail later, is inserted into the fitting hole 12.
are fitted. Further, the crank bearing upper half 9 is formed thick, and a semicircular bearing surface is formed on the lower surface thereof.
第１図に示すように鋳鉄性シリンダヘツド２の
下部には、これと同材料のシリンダスリーブ５が
一体に形成され、このシリンダスリーブ５の下端
に形成した若干小径の嵌合雄部５ａは、シールリ
ング１３を介して前記底壁８の嵌込孔１２に水密
に嵌込まれる。 As shown in FIG. 1, a cylinder sleeve 5 made of the same material is integrally formed at the lower part of the cast iron cylinder head 2, and a fitting male part 5a of a slightly smaller diameter formed at the lower end of this cylinder sleeve 5 is It is fitted into the fitting hole 12 of the bottom wall 8 through the seal ring 13 in a watertight manner.
前記骨格フレームＦの支柱６およびリブ板７
は、熱硬化性合成樹脂製外壁部分Ｗによつて一体
に鋳包まれ、前記リブ板７の窓孔１１は前記外壁
部分Ｗによつて遮蔽される。前記合成樹脂外壁部
分Ｗと、前記金属製シリンダスリーブ５間には、
環状の水ジヤケツト１４が形成され、この水ジヤ
ケツト１４の上端は開放されてシリンダヘツド２
側の水ジヤケツト１５に連通される。 The pillars 6 and rib plates 7 of the skeleton frame F
are integrally cast in an outer wall portion W made of thermosetting synthetic resin, and the window hole 11 of the rib plate 7 is shielded by the outer wall portion W. Between the synthetic resin outer wall portion W and the metal cylinder sleeve 5,
An annular water jacket 14 is formed, and the upper end of this water jacket 14 is open to allow access to the cylinder head 2.
It is communicated with the water jacket 15 on the side.
第１図に示すように合成樹脂製外壁部分Ｗの下
部は、側方に拡がりつつ下方にのびてクランクケ
ース３の上半部分３ａを形成する。この上半部分
３ａの内方にはリブ片３４を介してカバー壁３５
が一体に形成され、このカバー壁３５は前記クラ
ンク軸受上半部９の外側面を被覆する。 As shown in FIG. 1, the lower portion of the synthetic resin outer wall portion W expands laterally and extends downward to form the upper half portion 3a of the crankcase 3. A cover wall 35 is provided inwardly of this upper half portion 3a via a rib piece 34.
is integrally formed, and this cover wall 35 covers the outer surface of the crank bearing upper half 9.
また前記外壁部分Ｗの一側（第１図左側）には
空隙Ｃを存して吸気管Inの一部をなす上流側吸気
管１６が一体に形成される。この上流側吸気管１
６の開口下端にはシールリング１８を介してエア
クリーナAcが接続され、またその開口上端には、
後述する吸気管Inの他の一部をなす下流側吸気管
１７がシールリング１９を介して接続される。 Further, on one side of the outer wall portion W (on the left side in FIG. 1), an upstream intake pipe 16 that forms a part of the intake pipe In is integrally formed with a gap C. This upstream intake pipe 1
Air cleaner Ac is connected to the lower end of the opening of 6 via a seal ring 18, and the upper end of the opening is connected to
A downstream intake pipe 17 forming another part of the intake pipe In, which will be described later, is connected via a seal ring 19.
前記鋳鉄製シリンダヘツド２には、そこに形成
される燃焼室２０に通じる吸気ポート２１が上下
方向にのびており、その吸気ポート２１の開口上
端には、熱硬化性合成樹脂材よりなる前記下流側
吸気管１７の上後開口端が接続される。この下流
側吸気管１７は前記シリンダヘツド２の上面およ
び側面を覆うようにループ状に湾曲形成され、そ
の開口下端が前述のように上流側吸気管１６に接
続される。而してこの下流側吸気管１６を前述の
ようにループ状に形成することにより、内燃機関
全体のコンパクト化が可能になる。下流側吸気管
１７の吸気ポート２１近傍部には、燃料噴射ノズ
ルＮが設けられる。通常のようにシリンダヘツド
２には、前記吸気ポート２１を開閉する吸気弁２
２、その動弁機構２３および点火栓２４が設けら
れ、さらに図示しないが前記吸気ポート２１と並
列して排気ポート、該ポートを開閉する排気弁お
よびその動弁機構が設けられる。 The cast iron cylinder head 2 has an intake port 21 extending vertically that communicates with the combustion chamber 20 formed therein, and the downstream side made of a thermosetting synthetic resin material is provided at the upper end of the opening of the intake port 21. The upper and rear open ends of the intake pipe 17 are connected. This downstream intake pipe 17 is curved into a loop shape so as to cover the upper and side surfaces of the cylinder head 2, and its open lower end is connected to the upstream intake pipe 16 as described above. By forming this downstream intake pipe 16 into a loop shape as described above, it is possible to make the entire internal combustion engine more compact. A fuel injection nozzle N is provided in a portion of the downstream intake pipe 17 near the intake port 21 . As usual, the cylinder head 2 is equipped with an intake valve 2 that opens and closes the intake port 21.
2. A valve operating mechanism 23 and a spark plug 24 are provided, and an exhaust port, an exhaust valve for opening and closing the port, and a valve operating mechanism are provided in parallel with the intake port 21 (not shown).
またシリンダヘツド２上は、熱硬化性合成樹脂
製ヘツドカバー２５が被冠される。 Further, the cylinder head 2 is covered with a head cover 25 made of thermosetting synthetic resin.
第１図に示すように前記鋳鉄性骨格フレームＦ
の下面には、クランク軸受ブロツク２６が重合さ
れる。このクランク軸受ブロツク２６に穿設した
ボルト孔２７、前記骨格フレームＦの支柱６に穿
設した前記ボルト挿通孔１０およびシリンダヘツ
ド２に穿設したボルト孔２９にはそれらを通し
て、ボルト３０…が串通され、各通しボルト３０
…の上端にナツト３１を螺締することによりクラ
ンク軸受ブロツク２６、シリンダブロツク１、お
よびシリンダヘツド２の三者が一体に強固に結合
され、特に合成樹脂部分の多いシリンダブロツク
１の歪み、変形等を防止し得る。 As shown in FIG. 1, the cast iron skeleton frame F
A crank bearing block 26 is superimposed on the lower surface of the crankshaft. Bolts 30 are passed through the bolt holes 27 drilled in the crank bearing block 26, the bolt insertion holes 10 drilled in the pillars 6 of the skeleton frame F, and the bolt holes 29 drilled in the cylinder head 2. and each through bolt 30
By screwing the nut 31 onto the upper end of..., the crank bearing block 26, the cylinder block 1, and the cylinder head 2 are firmly connected together, and in particular, the cylinder block 1, which has many synthetic resin parts, is prevented from being distorted or deformed. can be prevented.
前記クランク軸受ブロツク２６は、前記骨格フ
レームＦ下部の複数個のクランク軸受上半部９と
対向する複数個のクランク軸受下半部２６ａを備
えており、各クランク軸受下半部２６ａに、その
下面より挿通した２本の締付ボルト３２をクラン
ク軸受上半部９に螺締することにより、クランク
軸受上半部９とクランク軸受ブロツク２６との結
合が一層強固となる。 The crank bearing block 26 includes a plurality of crank bearing lower half parts 26a facing the plurality of crank bearing upper half parts 9 at the lower part of the skeleton frame F, and each crank bearing lower half part 26a has a lower surface. By screwing the two tightening bolts 32 that have been inserted through the crankshaft upper half 9 into the crankshaft upper half 9, the connection between the crankshaft upper half 9 and the crankshaft bearing block 26 becomes even stronger.
前記合成樹脂製クランクケース上半部３ａの下
面には、同材料よりなるクランクケース下半部３
ｂがシールリング３３を介して接続され、前記ク
ランクケース下半部３ｂは、リブ片３６を介して
カバー壁３７がクランクケース３内に一体にのび
ており、このカバー壁３７は前記クランク軸受ブ
ロツク２６の外周面、および下面を被覆する。骨
格フレームＦのクランク軸受上半部９の半円状軸
受面とクランク軸受ブロツク２６のクランク軸受
下半部２６ａの半円状軸受面とで形成される軸受
孔３８には面軸受３９を介してクランク軸４０が
回転自在に支承される。クランク軸４０のクラン
クピンには通常のようにコンロツド４１を介し
て、前記シリンダスリーブ５に摺動自在に嵌合さ
れる、前記ピストン４が連結される。 The lower surface of the synthetic resin crankcase upper half 3a is provided with a crankcase lower half 3 made of the same material.
b are connected to each other through a seal ring 33, and a cover wall 37 of the crankcase lower half 3b extends integrally into the crankcase 3 through a rib piece 36, and this cover wall 37 is connected to the crankcase bearing block 26. Cover the outer circumferential surface and lower surface of. A surface bearing 39 is inserted into the bearing hole 38 formed by the semicircular bearing surface of the crankshaft upper half 9 of the frame frame F and the semicircular bearing surface of the crankshaft lower half 26a of the crankbearing block 26. A crankshaft 40 is rotatably supported. The piston 4, which is slidably fitted into the cylinder sleeve 5, is connected to the crank pin of the crankshaft 40 via a connecting rod 41 as usual.
前記クランクケース下半部３ｂには鉄板製のオ
イルパン４２がシールリング４３を介して油密に
接続される。 An oil pan 42 made of iron plate is oil-tightly connected to the lower half portion 3b of the crankcase via a seal ring 43.
前述のように機関本体Ｅのシリンダブロツク１
は骨格フレームＦとシリンダスリーブ５を除く外
壁部分Ｗ、すなわちシリンダブロツク１全体に対
して大きな容積を占める部分が金属に比べて比重
の著しく小さい熱硬化性合成樹脂材により構成さ
れており、シリンダブロツク１の総重量が大幅に
低減される。またシリンダブロツク１は三次元方
向の外力に対して十分の強度を保有する立方体形
状の骨格フレームＦによつて補強されるので、該
シリンダブロツク１にかゝる外力の大部分はこの
骨格フレームＦによつてうけることができる。ま
たピストン４の摺動するシリンダスリーブ５は鋳
鉄により形成され骨格フレームＦ底壁８の嵌込孔
１２に嵌着されて安定支持されピストン４の運動
を正確かつ円滑に案内し、しかもピストン４の摺
動に十分耐え得る耐摩性が保有される。また外壁
部分Ｗは比較的熱負荷が小さく、しかもこの外壁
部分Ｗとシリンダスリーブ５間には冷却水の流通
する水ジヤケツト１４が形成されることにより、
前記外壁部分Ｗを合成樹脂材により構成してもシ
リンダブロツク１として必要な耐熱性は十分に保
障される。 As mentioned above, cylinder block 1 of engine body E
The outer wall portion W excluding the skeleton frame F and the cylinder sleeve 5, that is, the portion occupying a large volume with respect to the entire cylinder block 1, is made of a thermosetting synthetic resin material whose specific gravity is significantly lower than that of metal. The total weight of 1 is significantly reduced. Furthermore, since the cylinder block 1 is reinforced by a cubic frame F that has sufficient strength against external forces in three-dimensional directions, most of the external force applied to the cylinder block 1 is absorbed by this frame F. You can receive it by. The cylinder sleeve 5 on which the piston 4 slides is made of cast iron and is fitted into the fitting hole 12 of the bottom wall 8 of the frame frame F to be stably supported and guide the movement of the piston 4 accurately and smoothly. It has enough wear resistance to withstand sliding. Further, the outer wall portion W has a relatively small thermal load, and a water jacket 14 through which cooling water flows is formed between the outer wall portion W and the cylinder sleeve 5.
Even if the outer wall portion W is made of a synthetic resin material, the heat resistance necessary for the cylinder block 1 is sufficiently ensured.
第４図には本発明の第２実施例が示される。こ
の実施例では、シリンダスリーブ５はシリンダヘ
ツド２と別体に形成され、その上端が該シリンダ
ヘツド２の下面に形成した嵌合凹部４６にガスケ
ツト４５を介して一体に嵌合される。 FIG. 4 shows a second embodiment of the invention. In this embodiment, the cylinder sleeve 5 is formed separately from the cylinder head 2, and its upper end is integrally fitted into a fitting recess 46 formed on the lower surface of the cylinder head 2 via a gasket 45.
以上の実施例により明らかなように本発明によ
れば、シリンダブロツクを、立方体形状の金属製
骨格フレームと、この骨格フレーム内に空隙を存
して収納され、該骨格フレームに一体に結合され
る、ピストン摺合用の金属製シリンダスリーブ
と、前記骨格フレームの外周を囲繞するように該
骨格フレームに一体に接合される熱硬化性合成樹
脂製外壁部分とより構成し前記外壁部分とシリン
ダスリーブ間には冷却水が流通するための水ジヤ
ケツトを形成したので、シリンダブロツクは大き
な容積を占める部分が比重の小な熱硬化性合成樹
脂材で形成されその総重量を大幅に低減すること
ができ、内燃機関全体の重量軽減に大きく寄与す
ることができる。 As is clear from the above embodiments, according to the present invention, a cylinder block is housed in a cubic metal frame, with a space left in the frame, and is integrally connected to the frame. , consisting of a metal cylinder sleeve for sliding pistons, and an outer wall part made of thermosetting synthetic resin that is integrally joined to the frame so as to surround the outer periphery of the frame, and between the outer wall part and the cylinder sleeve. Since the cylinder block has a water jacket for the circulation of cooling water, the part that occupies a large volume of the cylinder block is made of a thermosetting synthetic resin material with a low specific gravity, making it possible to significantly reduce its total weight. This can greatly contribute to reducing the weight of the entire engine.
また金属製骨格フレームは立方体形状に形成さ
れ、三次元方向の外力に対する十分な強度を保有
し、金属性シリンダスリーブと協働して、合成樹
脂外壁部分の強度減少部分を十分に補償すること
ができる。さらにシリンダスリーブはピストンの
軽快円滑な摺動運動を保障し得る。 In addition, the metal skeleton frame is formed in a cubic shape and has sufficient strength against external forces in three-dimensional directions, and can work together with the metal cylinder sleeve to sufficiently compensate for the reduced strength of the synthetic resin outer wall. can. Furthermore, the cylinder sleeve can ensure light and smooth sliding movement of the piston.
またシリンダブロツクは、比較的熱負荷の小さ
い外壁部分を合成樹脂材により形成し、しかもそ
の外壁部分と、高温に加熱されるシリンダスリー
ブ間に水ジヤケツトを形成するので、シリンダブ
ロツク全体としての耐熱性が損われる危惧もな
い。 In addition, the outer wall of the cylinder block, which has a relatively low heat load, is made of synthetic resin, and a water jacket is formed between the outer wall and the cylinder sleeve, which is heated to a high temperature, so the cylinder block as a whole has excellent heat resistance. There is no fear that it will be damaged.
したがつて全体としてシリンダブロツクは、そ
の必要とする強度、耐熱性、耐摩性、耐衝撃性等
の物性を確保しつつ大幅に重量を低減することが
でき、車両用内燃機関用としてきわめて有効であ
る。 Therefore, the cylinder block as a whole can be significantly reduced in weight while maintaining the required physical properties such as strength, heat resistance, abrasion resistance, and impact resistance, making it extremely effective for use in internal combustion engines for vehicles. be.
第１〜３図は本発明内燃機関の第１実施例を示
すもので、第１図はその縦断側面図、第２図は第
１図―線横断面図、第３図は骨格フレームお
よびシリンダスリーブの斜視図、第４図は本発明
内燃機関の第２実施例を示す要部の縦断面図であ
る。
Ｅ…内燃機関本体、Ｆ…骨格フレーム、Ｗ…外
壁部分、１…シリンダブロツク、４…ピストン、
５…シリンダスリーブ、６…支柱、７…リブ板、
８…底壁、１２…嵌込孔、１４…水ジヤケツト。
1 to 3 show a first embodiment of the internal combustion engine of the present invention, FIG. 1 is a longitudinal sectional side view thereof, FIG. 2 is a cross sectional view taken along the line 1--FIG. 3, and FIG. 3 is a skeletal frame and cylinder. FIG. 4 is a perspective view of the sleeve and a vertical cross-sectional view of the main parts showing a second embodiment of the internal combustion engine of the present invention. E... Internal combustion engine body, F... Skeleton frame, W... Outer wall portion, 1... Cylinder block, 4... Piston,
5...Cylinder sleeve, 6...Strut, 7...Rib plate,
8...bottom wall, 12...fitting hole, 14...water jacket.
Claims (1)
ツクにおいて、立方体形状の金属製骨格フレーム
と、この骨格フレーム内に空隙を存して収納さ
れ、該骨格フレームに一体に結合される、ピスト
ン摺合用の金属製シリンダスリーブと、前記骨格
フレームの外周を囲繞するように該骨格フレーム
に一体に接合される熱硬化性合成樹脂製外壁部分
とよりなり、前記外壁部分とシリンダスリーブ間
に冷却水が流通するための水ジヤケツトを形成し
たことを特徴とする、内燃機関のシリンダブロツ
ク。 ２ 前記特許請求の範囲第１項記載の内燃機関の
シリンダブロツクにおいて、前記金属製骨格フレ
ームは、立方体形状に形成され、その外周部に間
隔をあけて配置される複数本の支柱と、相隣れる
支柱の間を一体に連結するリブ板と、下面を覆
い、前記シリンダスリーブを嵌着するための嵌込
孔を開口した底壁とを少なくとも有する、内燃機
関のシリンダブロツク。 ３ 前記特許請求の範囲第１項記載の内燃機関の
シリンダブロツクにおいて、前記金属製シリンダ
スリーブをシリンダヘツドと一体に形成した内燃
機関のシリンダブロツク。 ４ 前記特許請求の範囲第１項記載の内燃機関の
シリンダブロツクにおいて、前記金属製シリンダ
スリーブをシリンダヘツドと別体に形成し、その
上縁をシリンダヘツドに嵌合した内燃機関のシリ
ンダブロツク。[Scope of Claims] 1. A cylinder block constituting a part of an internal combustion engine main body includes a cubic metal frame, housed within the frame with a gap, and integrally connected to the frame. The cylinder sleeve is composed of a metal cylinder sleeve for sliding pistons, and an outer wall made of thermosetting synthetic resin that is integrally joined to the frame so as to surround the outer periphery of the frame, and between the outer wall and the cylinder sleeve. A cylinder block for an internal combustion engine, characterized in that a water jacket is formed through which cooling water flows. 2. In the cylinder block for an internal combustion engine as set forth in claim 1, the metal skeleton frame is formed in a cubic shape, and has a plurality of pillars arranged at intervals on the outer periphery thereof, and a plurality of pillars adjacent to each other. A cylinder block for an internal combustion engine, the cylinder block having at least a rib plate that integrally connects between supporting columns, and a bottom wall that covers a lower surface and has a fitting hole for fitting the cylinder sleeve. 3. The cylinder block for an internal combustion engine according to claim 1, wherein the metal cylinder sleeve is integrally formed with a cylinder head. 4. The cylinder block for an internal combustion engine according to claim 1, wherein the metal cylinder sleeve is formed separately from the cylinder head, and its upper edge is fitted into the cylinder head.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58187790A JPS6081451A (en) | 1983-10-07 | 1983-10-07 | Cylinder block of internal-combustion engine |
| US06/657,685 US4644911A (en) | 1983-10-07 | 1984-10-04 | Cylinder block for internal combustion engine |
| GB08425207A GB2147662B (en) | 1983-10-07 | 1984-10-05 | I.c. engine cylinder block |
| DE19843436872 DE3436872A1 (en) | 1983-10-07 | 1984-10-08 | CYLINDER BLOCK FOR INTERNAL COMBUSTION ENGINES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58187790A JPS6081451A (en) | 1983-10-07 | 1983-10-07 | Cylinder block of internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6081451A JPS6081451A (en) | 1985-05-09 |
| JPH0134295B2 true JPH0134295B2 (en) | 1989-07-18 |
Family
ID=16212264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58187790A Granted JPS6081451A (en) | 1983-10-07 | 1983-10-07 | Cylinder block of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6081451A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0399848U (en) * | 1990-01-31 | 1991-10-18 | ||
| DE19608877A1 (en) * | 1996-03-07 | 1997-09-11 | Bayerische Motoren Werke Ag | Machine housing for reciprocating piston machines, especially V-engines |
| JP2001123880A (en) | 1999-10-26 | 2001-05-08 | Honda Motor Co Ltd | Engine block |
| EP3913208A4 (en) * | 2019-01-17 | 2022-09-07 | Sumitomo Bakelite Co.Ltd. | Engine block, resin block, and method for manufacturing engine block |
| JP7216368B2 (en) * | 2019-01-17 | 2023-02-01 | 住友ベークライト株式会社 | Manufacturing method of engine block |
| JP7270208B2 (en) * | 2019-01-17 | 2023-05-10 | 住友ベークライト株式会社 | ENGINE BLOCK, RESIN BLOCK AND METHOD OF MANUFACTURING ENGINE BLOCK |
| WO2023067785A1 (en) * | 2021-10-22 | 2023-04-27 | 日産自動車株式会社 | Composite cylinder block |
-
1983
- 1983-10-07 JP JP58187790A patent/JPS6081451A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6081451A (en) | 1985-05-09 |
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