JPS59150946A - Four-valve aluminum cylinder head - Google Patents

Four-valve aluminum cylinder head

Info

Publication number
JPS59150946A
JPS59150946A JP2217483A JP2217483A JPS59150946A JP S59150946 A JPS59150946 A JP S59150946A JP 2217483 A JP2217483 A JP 2217483A JP 2217483 A JP2217483 A JP 2217483A JP S59150946 A JPS59150946 A JP S59150946A
Authority
JP
Japan
Prior art keywords
cylinder head
valve
ignition plug
plug hole
aluminum 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.)
Granted
Application number
JP2217483A
Other languages
Japanese (ja)
Other versions
JPH0475386B2 (en
Inventor
Takeshi Hiraoka
武 平岡
Nobuyuki Matsushima
伸行 松嶋
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.)
Nippon Piston Ring Co Ltd
Original Assignee
Nippon Piston Ring Co Ltd
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 Nippon Piston Ring Co Ltd filed Critical Nippon Piston Ring Co Ltd
Priority to JP2217483A priority Critical patent/JPS59150946A/en
Publication of JPS59150946A publication Critical patent/JPS59150946A/en
Publication of JPH0475386B2 publication Critical patent/JPH0475386B2/ja
Granted 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per 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
    • 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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

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 increase the heat-load resisting properties of a four-valve aluminum cylinder head, by casting a cylindrical steel member in an ignition plug hole formed at the center portion of the cylinder head in the manner that it is surrounded by four valves. CONSTITUTION:A hole for inserting therein an ignition plug 1 is formed at the central portion of an aluminum cylinder head 2, and intake-valve seats 6-1, 6-2 and exhaust-valve seats 7-1, 7-2 are disposed around the ignition plug hole. Further, a cylindrical steel member 4 is fitted in said ignition plug hole by way of casting. With such an arrangement, the heat-load resisting properties of the cylinder head 2 can be increased by the steel member 4 having a higher rigidity than the main body of aluminum located around the ignition plug hole and between the valves even if spacing of the ignition plug hole from the valve seats is decreased by making the cylinder head in a four-valve type.

Description

【発明の詳細な説明】 本発明は内燃機関のシリンダヘッドに関するものであり
、特に４バルブアルミ製シリンダヘツドのバルブシート
間の変形損傷を防止できるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder head for an internal combustion engine, and in particular to a four-valve aluminum cylinder head that can prevent deformation damage between valve seats.

内燃機関のシリンダヘッドは、機関から受ける大きな熱
負荷によって、すなわち熱膨張、収縮の繰返しによって
変形損傷するおそれが多い部分である。特に吸気孔と排
気孔とで４個のバルブを有し、中心部にプラグ穴を有す
るものにおいては、バルブシート同志の間隔、及びバル
ブシートとプラグ穴の間隔が小さくなり、さらには近年
の軽量化をめざしたアルミ製シリンダヘッドの使用によ
り、熱負荷に対する耐久性の劣下が大きな問題となって
いる。The cylinder head of an internal combustion engine is a part that is likely to be deformed and damaged by the large thermal load it receives from the engine, that is, by repeated thermal expansion and contraction. In particular, in models that have four valves in the intake and exhaust holes and a plug hole in the center, the spacing between the valve seats and the spacing between the valve seat and the plug hole have become smaller, and in recent years, lightweight Due to the use of aluminum cylinder heads, the deterioration of durability against heat loads has become a major problem.

本発明は上記の問題を解決すべくなされたものであり、
繰返しの熱負荷を受ける点火プラグ穴の周囲と弁間部に
、アルミ製の本体よりも剛性の高に鋼材を鋳包むことに
よって、シリンダヘッドの耐久性を高めたものである。The present invention has been made to solve the above problems,
The durability of the cylinder head is increased by casting steel, which is more rigid than the aluminum main body, around the spark plug hole and between the valves, which are subject to repeated heat loads.

図に基づ゛いて本発明を説明する。第１図は点火プラグ
１を含む、アルミ製シリンダヘッド２と燃焼室３の縦断
面図である。本発明は図のように中央の点火プラグ穴の
周囲に円筒形状の鋼材４を鋳包むか、または第２図のよ
うに該円筒形状鋼材４と連続させて略十字形の鋼板５を
鋳包むものである。この第２図を燃焼室側から見たもの
は第４図で表わされ、第２図は第４図のＡ−Ａ　＝断面
図にあたる。あるいは本発明では第３図のように中火の
点火プラグ部分を除くバルブシート間に略十字形の鋼板
５のみを鋳包んでも良い。The present invention will be explained based on the figures. FIG. 1 is a longitudinal sectional view of an aluminum cylinder head 2 and a combustion chamber 3, including a spark plug 1. As shown in FIG. In the present invention, a cylindrical steel material 4 is cast around the central spark plug hole as shown in the figure, or a substantially cross-shaped steel plate 5 is cast in a continuous manner with the cylindrical steel material 4 as shown in FIG. It is something that A view of this FIG. 2 from the combustion chamber side is shown in FIG. 4, and FIG. 2 corresponds to a sectional view taken along line A-A in FIG. 4. Alternatively, in the present invention, as shown in FIG. 3, only the substantially cross-shaped steel plate 5 may be cast between the valve seats excluding the medium-heat ignition plug portion.

以上の構成によって本発明のシリンダヘッドは、アルミ
製本体の軽量性を損なうことを最小限に留め、繰返しの
熱負荷に対する耐久性を高めて、変形損傷によるガス漏
れ等を防ぐことかできるものである。With the above configuration, the cylinder head of the present invention can minimize the loss of lightness of the aluminum body, increase durability against repeated thermal loads, and prevent gas leakage due to deformation damage. be.

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

第１図は第１発明の一実施例を示すシリンダヘッドと燃
焼室の縦断面図、第２図は本発明の他の実施例を示す同
じく縦断面図、第３図は第２発明の一実施例を示す縦断
面図、第４図は第２図を燃焼室側から見た平面図である
。 符号の説明 ６−１．６−２・・・吸気バルブシート、７−１．７−
２・・・排気バルブシート。 第１図 第２図 第４図FIG. 1 is a vertical sectional view of a cylinder head and a combustion chamber showing an embodiment of the first invention, FIG. 2 is a longitudinal sectional view of another embodiment of the invention, and FIG. 3 is an embodiment of the second invention. FIG. 4 is a longitudinal sectional view showing the embodiment, and FIG. 4 is a plan view of FIG. 2 viewed from the combustion chamber side. Explanation of symbols 6-1.6-2...Intake valve seat, 7-1.7-
2...Exhaust valve seat. Figure 1 Figure 2 Figure 4

Claims (3)

【特許請求の範囲】[Claims] （１）４個のバルブによって囲まれた中央の点火プラグ
穴の周囲に円筒形状の鋼材を鋳包んだことを特徴とづる
４バルブアルミ製シリンダヘツド。(1) A four-valve aluminum cylinder head characterized by a cylindrical steel material cast around a central spark plug hole surrounded by four valves. （２）バルブシート間には、ざらに略十字形の鋼板を鋳
包んだことを特徴とする特許請求の範囲第１項記載の４
バルブアルミ製シリンダヘツド。(2) A roughly cross-shaped steel plate is cast between the valve seats, as set forth in claim 1.
Valve aluminum cylinder head. （３）４個のバルブによって囲まれた中央の点火プラグ
部分を除くバルブシート間に略十字形の鋼板を鋳包／シ
、たことを特徴とする４バルブアルミ製シリンダヘツド
。(3) A four-valve aluminum cylinder head characterized in that a substantially cross-shaped steel plate is cast between the valve seats except for the central spark plug portion surrounded by four valves.
JP2217483A 1983-02-15 1983-02-15 Four-valve aluminum cylinder head Granted JPS59150946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2217483A JPS59150946A (en) 1983-02-15 1983-02-15 Four-valve aluminum cylinder head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2217483A JPS59150946A (en) 1983-02-15 1983-02-15 Four-valve aluminum cylinder head

Publications (2)

Publication Number Publication Date
JPS59150946A true JPS59150946A (en) 1984-08-29
JPH0475386B2 JPH0475386B2 (en) 1992-11-30

Family

ID=12075432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2217483A Granted JPS59150946A (en) 1983-02-15 1983-02-15 Four-valve aluminum cylinder head

Country Status (1)

Country Link
JP (1) JPS59150946A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435512A (en) * 1977-08-25 1979-03-15 Kubota Ltd Structure of cylinder head in internal combustion engine
JPS5525501A (en) * 1978-08-04 1980-02-23 Supensaa Hetsuzu Inc Insert for ignition deck of internal
JPS5615423U (en) * 1979-07-16 1981-02-10
JPS5679623U (en) * 1979-11-22 1981-06-27

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615423B2 (en) * 1973-06-04 1981-04-10

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435512A (en) * 1977-08-25 1979-03-15 Kubota Ltd Structure of cylinder head in internal combustion engine
JPS5525501A (en) * 1978-08-04 1980-02-23 Supensaa Hetsuzu Inc Insert for ignition deck of internal
JPS5615423U (en) * 1979-07-16 1981-02-10
JPS5679623U (en) * 1979-11-22 1981-06-27

Also Published As

Publication number Publication date
JPH0475386B2 (en) 1992-11-30

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