JPS59221446A - Cylinder block - Google Patents

Cylinder block

Info

Publication number
JPS59221446A
JPS59221446A JP9419683A JP9419683A JPS59221446A JP S59221446 A JPS59221446 A JP S59221446A JP 9419683 A JP9419683 A JP 9419683A JP 9419683 A JP9419683 A JP 9419683A JP S59221446 A JPS59221446 A JP S59221446A
Authority
JP
Japan
Prior art keywords
block
cylinder block
bolts
bearing cap
cylinder
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.)
Pending
Application number
JP9419683A
Other languages
Japanese (ja)
Inventor
Masaaki Takiguchi
瀧口　雅章
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.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Hino Jidosha Kogyo KK
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 Hino Motors Ltd, Hino Jidosha Kogyo KK filed Critical Hino Motors Ltd
Priority to JP9419683A priority Critical patent/JPS59221446A/en
Publication of JPS59221446A publication Critical patent/JPS59221446A/en
Pending legal-status Critical Current

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
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • 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
    • F05C2251/00—Material properties
    • F05C2251/02—Elasticity

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

PURPOSE:To prevent deformation of the cylinder block by a method wherein the block of a material having high Young's modulus is cast in the bottom deck section of the cylinder block and the axial lines of head bolts and bearing cap bolts are aligned CONSTITUTION:The block 5 of a material having high Young's modulus, such as carbon steel or the like, is cast in the bottom deck section 4 of the cylinder block 1 while the cylinder bolts 6 and the bearing cap bolts 7 are screwed thereinto. According to this method, deformation of the skirt section of cylinder block may be restricted since moments generated between both bolts are absorbed by the block 5 even if these axial lines are not coinciding. Accordingly, the cylinder block may be prevented from generating vibration or noise.

Description

【発明の詳細な説明】 本発明はエンジンのシリンダブロックに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine cylinder block.

エンジンのシリンダブロックは、その上面にシリンダヘ
ッドを取付け、また下方にはクランクシャフトのベアリ
ングキャップを取付けるうこのシリンダー・ラドとベア
リングキャップの取付は通しボルトによってシリンダブ
ロック内を貫通して共通で締付固定する場合と、この通
しボルトが適用できない形状のエンジンにあってはシリ
ンダヘッドボルトとベアリングキャップボルトとの別個
のボＡ、）で締付固定している。The engine's cylinder block has the cylinder head mounted on the top surface, and the crankshaft bearing cap mounted below.The cylinder head and bearing cap are mounted by passing through the cylinder block with a through bolt and tightening them together. In case of fixation, and in the case of an engine whose shape does not allow this through bolt, the cylinder head bolt and bearing cap bolt are tightened and fixed using separate bores A,).

この別個のボルトの場合には、シリンダヘッドボルトに
よりシリンダブロックの上部は上向きの引張力を受け、
またベアリングキャップボルトによりシリンダブロック
の下部は下向きの引張力を受け、上記両ボルトの軸線の
ずれによってシリンダブロック内部に変形モーメントが
発生し、シリンダブロックの振動や騒音の一要因となっ
ている。この問題を解決するために、両ボルトの軸線を
同一線上に配置したものが特開昭５１−８７６１２号公
報によって開示されている。In the case of this separate bolt, the top of the cylinder block is subjected to an upward pull due to the cylinder head bolt;
Furthermore, the lower part of the cylinder block is subjected to a downward tensile force due to the bearing cap bolt, and the misalignment of the axes of the bolts generates a deformation moment inside the cylinder block, which is one of the causes of cylinder block vibration and noise. In order to solve this problem, Japanese Patent Laid-Open No. 51-87612 discloses a system in which the axes of both bolts are arranged on the same line.

しかし、この場合、全ての形式のエンジンに適応される
ものではなく、クランクシャフトの径の大きさに基くベ
アリングキャップの大きさによるベアリングキャップボ
ルトの位置並びにシリンダブロック内の冷却水通路位置
に伴うシリンダヘッドボルトの位置により設計上両ボル
トの軸線を一致させることは甚だ困難であり、結局両ボ
ルトの軸線を不一致にした状態を余儀無く採用している
のが現状である２、 そこで、本発明は上記両ボルトの軸線を不一致とするエ
ンジンのシリンダブロックの変形を防止し、従来の問題
点を解決したものである。However, in this case, it is not applicable to all types of engines, and the position of the bearing cap bolt depends on the size of the bearing cap based on the diameter of the crankshaft and the position of the cooling water passage in the cylinder block. Due to the position of the head bolt, it is extremely difficult to match the axes of both bolts due to the design, and the current state of affairs is that the axes of both bolts are unavoidably mismatched2.Therefore, the present invention This prevents deformation of the engine cylinder block caused by misalignment of the axes of both bolts, and solves the conventional problems.

以下本発明の実施例を図面によって説明する。Embodiments of the present invention will be described below with reference to the drawings.

第１図において、１はエンジンのシリンダブロック、２
はシリンダヘッド％３はクランクシャフトのベアリング
キャップである。前記シリンダヘッド２はシリンダヘッ
ドボルト６により締付固定され、またベアリングキャッ
プ３はベアリングキャップボルト７によって締付固定さ
れる。In Fig. 1, 1 is the cylinder block of the engine, 2
is the cylinder head and %3 is the crankshaft bearing cap. The cylinder head 2 is tightened and fixed by cylinder head bolts 6, and the bearing cap 3 is tightened and fixed by bearing cap bolts 7.

本発明は第１図及び第２図に示すように、シリンダブロ
ックｌのボトムデツキ部分４に、例えば炭素鋼等のヤン
グ率の高い材料のブロック５を鋳ぐるみ、このブロック
５に前記シリンダヘッドボルト６並びにベアリングキャ
ップボルト７を螺入したものである。尚第１図及び第２
図に示すブロック５は一つのブロック体であるが、第３
図に示すように左右２個に分割したブロック５とするこ
とも可能である。As shown in FIGS. 1 and 2, in the present invention, a block 5 made of a material having a high Young's modulus such as carbon steel is cast into the bottom deck portion 4 of a cylinder block l, and the cylinder head bolt 6 is inserted into the block 5. In addition, a bearing cap bolt 7 is screwed into the bearing cap bolt 7. In addition, Figures 1 and 2
Block 5 shown in the figure is one block body, but the third
As shown in the figure, it is also possible to divide the block 5 into two parts, left and right.

本発明は上記の通りの構造であるから、シリンダヘッド
ボルト６とベアリングキャップボルト７の軸線が不一致
であっても、両ボルト間に発生するモーメントはヤング
率の高い月料のブロック５によってシリンダブロックｌ
のスカート部分の変形を抑制するのである。Since the present invention has the above-described structure, even if the axes of the cylinder head bolt 6 and the bearing cap bolt 7 do not match, the moment generated between the two bolts is absorbed by the cylinder block 5, which has a high Young's modulus. l
This suppresses deformation of the skirt portion of the skirt.

従って、シリンダヘッドとベアリングキャップとの締付
固定を通しボルトでは行うことができない形式のエンジ
ンや、シリンダヘッドボルトとベアリングキャップボル
トとが同一軸線上に配置させることができない形式のエ
ンジンであり、シリンダヘッドボルトとベアリングキャ
ップボルトとの軸線を不一致の配置β１係を余儀無くさ
れろエンジンにおいて、上記シリンダブロックのボトム
デツキ部に崎ぐるみしたヤング率の高い月料のブロック
に軸線不一致とシリンダヘッドボルトとベアリングキャ
ップボルトとを螺入することにより、従来の問題点であ
ったシリンダブロックのスカート部の変形を押え、シリ
ンダブロックの振動や騒音の発生を効果的に防止する利
点を有しているものである。Therefore, there are engines in which the cylinder head and bearing cap cannot be tightened and fixed with through bolts, and engines in which the cylinder head bolt and bearing cap bolt cannot be arranged on the same axis. In an engine, the axes of the head bolt and the bearing cap bolt are mismatched.In the engine, the cylinder head bolt and the bearing are mismatched in the axes of the block with a high Young's modulus that is wrapped around the bottom deck of the cylinder block. By screwing in the cap bolt, this has the advantage of suppressing the deformation of the skirt portion of the cylinder block, which was a problem in the past, and effectively preventing the generation of cylinder block vibration and noise. .

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

第１図は本発明の断面図、第２図は第１図■−■線断面
図、第３図は本発明の他の実施例を示す断面図である。 １・・・シリンダブロック、２・・・シリンダヘッド、
３・・・ベアリングキャップ、４・・・ボトムデツキ部
分、５・＠ｅギヤング率高い材料のブロック、６・−−
シリンダヘッドボルト、７拳・・ベアリングキャップボ
ルト。 第２図 １ 第３図FIG. 1 is a sectional view of the present invention, FIG. 2 is a sectional view taken along line 1--2 in FIG. 1, and FIG. 3 is a sectional view showing another embodiment of the present invention. 1... Cylinder block, 2... Cylinder head,
3...Bearing cap, 4...Bottom deck part, 5.@e Block of material with high Guyang's modulus, 6.--
Cylinder head bolt, 7 fist bearing cap bolt. Figure 2 1 Figure 3

Claims (1)

【特許請求の範囲】[Claims] シリンダヘッドボルトとベアリングキャップボルトとの
軸線に位相ずれを有したエンジンにおいて、シリンダブ
ロックのボトムデツキ部分にヤング率の高い材料のブロ
ックを鋳ぐるみ、このブロックにシリンダヘッドボルト
とベアリングキャップボルトを螺入したことを特徴とす
るシリンダブロックIn an engine with a phase shift in the axes of the cylinder head bolt and bearing cap bolt, a block made of a material with a high Young's modulus is cast in the bottom deck part of the cylinder block, and the cylinder head bolt and bearing cap bolt are screwed into this block. A cylinder block characterized by
JP9419683A 1983-05-30 1983-05-30 Cylinder block Pending JPS59221446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9419683A JPS59221446A (en) 1983-05-30 1983-05-30 Cylinder block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9419683A JPS59221446A (en) 1983-05-30 1983-05-30 Cylinder block

Publications (1)

Publication Number Publication Date
JPS59221446A true JPS59221446A (en) 1984-12-13

Family

ID=14103540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9419683A Pending JPS59221446A (en) 1983-05-30 1983-05-30 Cylinder block

Country Status (1)

Country Link
JP (1) JPS59221446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422848U (en) * 1987-08-01 1989-02-07

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4217050Y1 (en) * 1964-02-05 1967-10-02
JPS5611342B2 (en) * 1976-04-12 1981-03-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4217050Y1 (en) * 1964-02-05 1967-10-02
JPS5611342B2 (en) * 1976-04-12 1981-03-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422848U (en) * 1987-08-01 1989-02-07

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