JPS63176612A - Oil feeder in cylinder head for double overhead camshaft type internal combustion engine - Google Patents

Oil feeder in cylinder head for double overhead camshaft type internal combustion engine

Info

Publication number
JPS63176612A
JPS63176612A JP652887A JP652887A JPS63176612A JP S63176612 A JPS63176612 A JP S63176612A JP 652887 A JP652887 A JP 652887A JP 652887 A JP652887 A JP 652887A JP S63176612 A JPS63176612 A JP S63176612A
Authority
JP
Japan
Prior art keywords
oil supply
supply passage
cylinder
plug insertion
oil feeding
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
JP652887A
Other languages
Japanese (ja)
Other versions
JPH052809B2 (en
Inventor
Yuji Fukushima
雄二 福島
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor 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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP652887A priority Critical patent/JPS63176612A/en
Publication of JPS63176612A publication Critical patent/JPS63176612A/en
Publication of JPH052809B2 publication Critical patent/JPH052809B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/102—Lubrication of valve gear or auxiliaries of camshaft bearings
    • 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
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • F02F1/38—Cylinder heads having cooling means for liquid cooling the cylinder heads being of overhead valve type
    • 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
    • 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
    • F02B2275/18—DOHC [Double 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/241—Cylinder heads specially adapted to pent roof shape of the combustion chamber
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To facilitate the machining of an oil feeding passage, by connecting a pivot part branch oil feeding passage and a camshaft bearing branch oil feeding passage both to one piece of the main oil feeding passage that is made to pierce through into each spark plug insertion cylinder of a cylinder head. CONSTITUTION:Piercing through each spark plug insertion cylinder 10 of a cylinder head 1, there is provided with one piece of a main oil feeding passage 20, and an inner cylinder 29 is fitly inserted into this spark plug insertion cylinder 10, thereby forming an annular oil feeding chamber 32. In addition, each rush adjuster 19 is installed in pivot parts 16 and 18 of a rocker arm for suction and exhaust valves, and a hydraulic chamber of the adjuster 19 and the annular oil feeding chamber 32 are interconnected to each other through pivot part branch oil feeding passages 27 and 28, then bearings 12 and 14 of a camshaft and the annular oil feeding chamber 32 are interconnected to each other through bearing branch oil feeding passages 25 and 26. With this constitution, the main oil feeding passage gets off with only one piece so that machining becomes facilitated.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、シリンダヘッドの上面に、吸気弁用ノカム軸
と排気弁用のカム軸との二本のカム軸を配設して成るい
わゆるＤＯＨＣ（ダブルオーバーヘッドカムシャフト）
型の内燃機関において、そのシリンダヘッドにおける吸
気弁用揺動アーム及び排気弁用揺動アームを支持するピ
ポソ１一部に対して給油するための装置に関するもので
ある。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a so-called camshaft in which two camshafts, a camshaft for an intake valve and a camshaft for an exhaust valve, are disposed on the upper surface of a cylinder head. DOHC (double overhead camshaft)
The present invention relates to a device for supplying oil to a part of a piston 1 that supports an intake valve swing arm and an exhaust valve swing arm in a cylinder head of a type of internal combustion engine.

〔従来の技術〕[Conventional technology]

先行技術としての特開昭６０−７９１４１号公報は、下
面に、一列状に配設した各気筒に対する燃焼室を凹み形
成する一方、上面に、点火栓の挿入筒を前記各燃焼室の
箇所ごとに設けると共に、この各点火栓挿入筒列を挟む
左右両側の部位に吸気弁用揺動アームのピポット部と排
気弁用揺動ア−ムのピポット部を一体的に造形して成る
ＤＯＨＣ型内燃機関用シリンダヘッドにおける給油装置
として、該シリンダヘッドに、前記各点火栓挿入筒列の
左側の部位と右側の部位との両方に各点火栓挿入筒列の
方向に延びる主給油通路を設け、この二本の主給油通路
のうち一方の主給油通路から吸気弁用揺動アームのピポ
ット部に各々給油する一方、他方の主給油通路から排気
弁用揺動アームの各ピポット部に各々給油することを提
案している。Japanese Patent Application Laid-open No. 60-79141 as a prior art discloses that a combustion chamber for each cylinder arranged in a row is recessed on the lower surface, and a cylinder for inserting a spark plug is formed on the upper surface for each of the combustion chambers. The DOHC type internal combustion engine is equipped with a pivot part of the swinging arm for the intake valve and a pivot part of the swinging arm for the exhaust valve, which are integrally molded on the left and right sides of each spark plug insertion cylinder row. As a refueling device for an engine cylinder head, the cylinder head is provided with a main oil supply passage extending in the direction of each spark plug insertion cylinder row at both the left side and the right side of each spark plug insertion cylinder row. Supplying oil from one of the two main oil supply passages to the pivot part of the swinging arm for the intake valve, and supplying oil to each pivot part of the swinging arm for the exhaust valve from the other main oil supply passage. is proposed.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、ここにおける主給油通路は、クランク軸の軸線
方向に極めて長いものになるにも拘わらず、この主給油
通路はシリンダヘッドの鋳造後においてドリルによって
穿設加工するようにしなければならないから、この主給
油通路を、前記先行技術のように二本穿設することは、
この両生給油通路の穿設加工に要する手数が著しく増大
することになり、給油通路のための加工コストが可成リ
アツブするのであり、しかも、主給油通路を二本も設け
ることは、この主給油通路を設けるために必要な肉盛部
も、両生給油通路の各々に対して別々に造形するように
しなければならないから、シリンダヘッドの重量、ひい
ては内燃機関の重量が増加するのであった。However, although the main oil supply passage here is extremely long in the axial direction of the crankshaft, this main oil supply passage must be drilled with a drill after the cylinder head is cast. Drilling two main oil supply passages as in the prior art,
The labor required for drilling this amphiphilic oil supply passage increases significantly, and the machining cost for the oil supply passage increases considerably.Moreover, providing two main oil supply passages means that the main oil supply The built-up portions necessary to provide the passages must also be formed separately for each of the ambidextrous oil supply passages, which increases the weight of the cylinder head and, by extension, the weight of the internal combustion engine.

本発明は、この問題を解消することを目的とするもので
ある。The present invention aims to solve this problem.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

このため本発明は、下面に、一列状に配設した各気筒に
対する燃焼室を凹み形成する一方、上面に、点火栓の挿
入筒を前記各燃焼室の箇所ごとに一体的に設けると共に
、この各点火栓挿入筒列を挟む左右両側の部位に吸気弁
用揺動アームのピポット部と排気弁用揺動アームのピポ
ット部を一体的に設けて成るＤＯＨＣ型内燃機関用シリ
ンダヘッドにおいて、このシリンダヘッドには、前記各
点火栓挿入筒列の方向に延びる一本の主給油通路を、各
点火栓挿入筒内を貫通するように設けて、この主給油通
路にシリンダブロック側からのオイル供給通路を接続し
、前記各点火栓挿入筒内には、当該点火栓挿入筒内に前
記主給油通路に連通ずる環状の給油室を成形するための
内筒を各々嵌挿する一方、前記吸気弁用揺動アーム及び
排気弁用揺動アームの各ピポット部には、前記主給油通
路又は前記環状給油室に連通ずるピポット部用技給油通
路を各々設けた構成にしたものである。Therefore, in the present invention, combustion chambers for each of the cylinders arranged in a row are recessed on the lower surface, while an ignition plug insertion tube is integrally provided on the upper surface for each of the combustion chambers. In a cylinder head for a DOHC type internal combustion engine, in which a pivot portion of an intake valve swinging arm and a pivot portion of an exhaust valve swinging arm are integrally provided on both the left and right sides of each spark plug insertion cylinder row, this cylinder The head is provided with a main oil supply passage extending in the direction of each spark plug insertion cylinder row so as to penetrate through each spark plug insertion cylinder, and an oil supply passage from the cylinder block side is provided in the main oil supply passage. An inner cylinder for forming an annular oil supply chamber communicating with the main oil supply passage is inserted into each spark plug insertion cylinder, while an inner cylinder for forming an annular oil supply chamber communicating with the main oil supply passage is inserted into each spark plug insertion cylinder. Each pivot portion of the swing arm and the exhaust valve swing arm is provided with a pivot portion technical oil supply passage communicating with the main oil supply passage or the annular oil supply chamber.

〔発明の作用・効果〕[Action/effect of the invention]

このように構成すると、シリンダブロックにおけるオイ
ル供給通路から送られて来るオイルは、主給油通路を介
して各環状給油室に入り、この環状給油室又は主給油通
路からピポット部技給油通路を介して吸気弁用揺動アー
ムの各ピポット部及び排気弁用揺動アームの各ピポット
部に各々給油される。With this configuration, the oil sent from the oil supply passage in the cylinder block enters each annular oil supply chamber via the main oil supply passage, and from this annular oil supply chamber or the main oil supply passage via the pivot section oil supply passage. Each pivot portion of the intake valve swing arm and each pivot portion of the exhaust valve swing arm are supplied with oil.

この場合シリンダヘッドには、前記先行技術のように長
い主給油通路を二本も穿設する必要がなく、一本の主給
油通路を穿設するのみで良いのであり、しかも、この主
給油通路は、各点火栓挿入筒を貫通して穿設するもので
、この主給油通路をドリルによって穿設加工するに際し
て発生する切削屑は、ドリルが各点火栓挿入筒を貫通す
るときにおいて各点火栓挿入筒内に排出されることにな
り、切削屑の排出が円滑にできるから、ドリルによる主
給油通路の穿設加工も、前記先行技術の場合よりも遥か
に簡単に、且つ、早くできるのである。また、シリンダ
ヘッドに主給油通路を形成するために必要な肉盛部も、
前記一本の主給油通路に対してのみ設ければ良いから、
主給油通路を形成するために必要な肉盛部も少なくて済
むのである。In this case, there is no need to drill two long main oil supply passages in the cylinder head as in the prior art, and only one main oil supply passage is required. is drilled through each ignition plug insertion tube, and the cutting waste generated when drilling this main oil supply passage with a drill is removed from each ignition plug insertion tube when the drill penetrates each ignition plug insertion tube. Since the cutting waste is discharged into the insertion cylinder and the cutting waste can be smoothly discharged, drilling of the main oil supply passage with a drill can be done much more easily and quickly than in the case of the prior art. . In addition, the built-up part necessary to form the main oil supply passage in the cylinder head is also
Because it only needs to be provided for the one main oil supply passage,
The number of built-up parts required to form the main oil supply passage can also be reduced.

従って本発明によると、シリンダヘッドに、当該シリン
ダヘッドにおける各揺動アームのピポット部への給油通
路を形成する場合における加工コストを大幅に低減でき
ると共に、シリンダヘッドの重量、ひいては内燃機関の
重量の増大を回避できる効果を有する。Therefore, according to the present invention, it is possible to significantly reduce the processing cost when forming a refueling passage in the cylinder head to the pivot portion of each swing arm in the cylinder head, and also to reduce the weight of the cylinder head and, by extension, the weight of the internal combustion engine. It has the effect of avoiding the increase.

〔実施例〕〔Example〕

以下本発明の実施例を図面について説明するに、図にお
いて符号１は、直列三気筒内燃機関において、そのシリ
ンダブロック（図示せず）の上面に締結される鋳造製の
シリンダヘッドを示し、該シリンダヘッド１の下面には
、各気筒の箇所に燃焼室２が凹み形成されている。Embodiments of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 designates a cast cylinder head fastened to the upper surface of a cylinder block (not shown) in an in-line three-cylinder internal combustion engine. A combustion chamber 2 is recessed in the lower surface of the head 1 at a location corresponding to each cylinder.

このシリンダヘッド１においてその長手中心線１ａを挟
む一方側には、各燃焼室２ごとに二つの吸気ボート３が
、他方側には、各燃焼室２ごとに二つの排気ポート４が
各々形成され、これら各吸気ボート３の土壁には、当該
吸気ボート３の燃焼室２への開口部を開閉する吸気弁５
の支持部６が、また、各排気ポート４の土壁には、当該
排気ボート４の燃焼室２への開口部を開閉する排気弁７
の支持部８が各々形成されている。Two intake ports 3 are formed for each combustion chamber 2 on one side of the cylinder head 1 across the longitudinal centerline 1a, and two exhaust ports 4 are formed for each combustion chamber 2 on the other side. , In the earthen wall of each of these intake boats 3, there is an intake valve 5 that opens and closes the opening to the combustion chamber 2 of the intake boat 3.
The support part 6 of each exhaust port 4 is also provided with an exhaust valve 7 that opens and closes the opening to the combustion chamber 2 of the exhaust boat 4.
Support portions 8 are formed respectively.

前記シリンダヘッド１の上面には、点火栓９を装着する
ための点火栓挿入筒１０が前記各燃焼室２の箇所ごとに
設けられると共に、この各点火栓挿入筒１０における一
方の側面には、吸気弁５用のカム軸１１を軸支するため
の軸受１２が、他方の側面には、排気弁７用のカム軸１
３を軸支するための軸受１４が各々一体的に設けられ、
更に、前記各点火栓挿入筒１０の側面には、吸気弁５用
の揺動アーム１５に対するピポット部１６と、排気弁７
用揺動アーム１７に対するピポット部１８とが各々一体
的に造形されている。On the upper surface of the cylinder head 1, a spark plug insertion tube 10 for mounting the spark plug 9 is provided at each location of each combustion chamber 2, and on one side of each spark plug insertion tube 10, A bearing 12 for supporting the camshaft 11 for the intake valve 5 is provided on the other side, and a bearing 12 for supporting the camshaft 11 for the exhaust valve 7 is provided on the other side.
Bearings 14 for pivotally supporting 3 are each integrally provided,
Further, on the side surface of each spark plug insertion tube 10, a pivot portion 16 for the swinging arm 15 for the intake valve 5 and an exhaust valve 7 are provided.
The pivot portions 18 for the swing arms 17 are each integrally formed.

これら各ピポット部１６．１８内には、第５図に示すよ
うにスリーブｊ９ａと、該スリーブ１９ａ内に摺動自在
に嵌挿したピストン１９ｂとを備え、ピストン１９ｂの
上端に隙間節部１９Ｃを形成して成るラッシュアジャス
タ１９と各々挿入して、このラッシュアジャスタ１９に
おけるピストン１９ｂ上端の隙間節部１９Ｇにて、前記
各揺動アーム１５．１７の基端部を支承するように構成
されている。Each of these pivot parts 16.18 is provided with a sleeve j9a and a piston 19b slidably inserted into the sleeve j9a, as shown in FIG. 5, and a gap joint part 19C is provided at the upper end of the piston 19b. The lash adjusters 19 are inserted into the lash adjusters 19, and the base ends of the swing arms 15 and 17 are supported at the gap joints 19G at the upper ends of the pistons 19b of the lash adjusters 19. .

そして、前記シリンダヘッド１には、その長手中心線ｌ
ａ上の部位に当該長手中心線１ａの方向に延びる一本の
主給油通路２０を、前記各点火栓挿入筒１０内を貫通す
るようにして穿設し、この主給油通路２０の一端を、シ
リンダヘッド１に穿設した給油通路２１を介して、シリ
ンダブロック側におけるオイル供給通路（図示せず）に
連通ずる。なお、図において符号２２，２３．２４は、
この主給油通路２０を設けるために各点火栓挿入筒１０
の相互間と、シリンダヘッド１における側面壁１ｂ、ｌ
ｃとの間に一体的に肉盛り形成したボス部である。The cylinder head 1 has a longitudinal center line l.
A main oil supply passage 20 extending in the direction of the longitudinal centerline 1a is drilled at a portion above a so as to pass through each of the spark plug insertion tubes 10, and one end of this main oil supply passage 20 is It communicates with an oil supply passage (not shown) on the cylinder block side through an oil supply passage 21 formed in the cylinder head 1 . In addition, in the figure, the symbols 22, 23, and 24 are
In order to provide this main oil supply passage 20, each spark plug insertion tube 10
between each other, and the side walls 1b, l in the cylinder head 1
This is a boss part that is integrally built up between the part and c.

前記各軸受１２，１４には、当該各軸受１２゜１４にお
ける軸受孔１２ａ、１４ａの内面と前記各点火栓挿入筒
１０内とを連通ずるための軸受用技給油通路２５．２６
を各々穿設する一方、前記各ピポット部１６．１８にも
、当該各ピボ、ノド部１６．１８内と前記主給油通路２
０を連通ずるピポット部用技給油通路２７．２８を各々
穿設し、このピポット部枝給油通路２７．２８からのオ
イルを、前記ラッシュアジャスタ１９におけるスリーブ
１９ａ内に油圧室１９ｄに逆止弁１９ｅ付き通路１９ｆ
を介して導入する。Each of the bearings 12, 14 has a bearing oil supply passage 25, 26 for communicating the inner surface of the bearing hole 12a, 14a in each of the bearings 12, 14 with the inside of each spark plug insertion tube 10.
are drilled in each of the pivot portions 16.18, and inside the respective pivot and throat portions 16.18 and the main oil supply passage 2.
Pivot part technical oil supply passages 27, 28 communicating with the oil supply passages 27, 28 are respectively bored, and the oil from the pivot part branch oil supply passages 27, 28 is transferred to the hydraulic chamber 19d in the sleeve 19a of the lash adjuster 19 through the check valve 19e. Passageway 19f
Introduced via.

更に、前記各点火栓挿入筒１０内には、上端外周と下端
外周とに点火栓挿入筒１０の内面に密接するシール用の
Ｏリング３０．３１を備えた内筒２９を各々嵌挿して、
各点火栓挿入筒１０内に、前記主給油通路２０に連通ず
ると共に、主給油通路２０と各軸受用技給油通路２５．
２６を連通ずるための環状の給油室３２を各々形成し、
この環状給油室３２への前記各軸受用技給油通路２５゜
２６の開口部２５　ａ、　　２６　ａを、前記主給油通
路２０よりも適宜寸法（Ｈ）だけ高い位置に設定した構
成にする。Further, an inner cylinder 29 having sealing O-rings 30 and 31 that are closely attached to the inner surface of the spark plug insertion cylinder 10 at the upper and lower outer peripheries is inserted into each of the spark plug insertion cylinders 10, respectively.
Inside each spark plug insertion tube 10, there is a main oil supply passage 25 which communicates with the main oil supply passage 20 and a technical oil supply passage 25 for each bearing.
26, each forming an annular oil supply chamber 32 for communicating with each other,
The openings 25 a and 26 a of the technical oil supply passages 25 and 26 for each bearing to the annular oil supply chamber 32 are set at positions higher than the main oil supply passage 20 by an appropriate dimension (H).

なお、図中符号３３は、前記シリンダヘッド１の上面に
対して複数本のボルト３４にて締結したシリンダへッド
カハー、また、前記主給油通路２０の両端における開口
部は盲栓３５．３６によって塞がれ、前記給油通路２１
の開口部も盲栓３７にて塞がれている。In addition, the reference numeral 33 in the figure indicates a cylinder head cover fastened to the upper surface of the cylinder head 1 with a plurality of bolts 34, and the openings at both ends of the main oil supply passage 20 are closed with blind plugs 35 and 36. Scratch, the oil supply passage 21
The opening is also closed with a blind stopper 37.

この構成において、シリンダブロックにおけるオイル供
給通路からシリンダへソド１における主給油通路２０を
介して各環状給油室３２内に入ったオイルは、その一部
が、該環状給油室３２に連通する軸受用技給油通路２５
．２６を介して吸気弁用カム軸１１の各軸受１２及び排
気弁用カム軸１３の各軸受１４に各々給油されて、当該
各軸受１２．１４の潤滑に供される一方、他のオイルは
、主給油通路２０からピポット部技給油通路２７゜２８
を介して吸気弁用揺動アーム１５の各ピポット部１６及
び排気弁用揺動アーム１７の各ピポット部１８に至り、
この各ピポット部１６．１８の各々に設けたラッシュア
ジャスタ１９における油圧室１９ｄに逆止弁１９ｅ付き
通路１９ｆを介して各々給油されるのである。In this configuration, a portion of the oil that enters each annular oil supply chamber 32 from the oil supply passage in the cylinder block to the cylinder via the main oil supply passage 20 in the cylinder 1 is used for bearings communicating with the annular oil supply chamber 32. Technical refueling passage 25
．． 26 to each bearing 12 of the intake valve camshaft 11 and each bearing 14 of the exhaust valve camshaft 13 to lubricate each bearing 12.14, while other oil From main oil supply passage 20 to pivot oil supply passage 27°28
to each pivot portion 16 of the intake valve swing arm 15 and each pivot portion 18 of the exhaust valve swing arm 17,
Hydraulic chambers 19d in lash adjusters 19 provided in each of the pivot portions 16, 18 are supplied with oil through passages 19f with check valves 19e.

この場合、前記環状給油室３２への前記各軸受用技給油
通路２５．２６の開口部２５ａ、２６ａを、前記主給油
通路２０よりも適宜寸法（Ｈ）だけ高い位置に設定した
ことにより、主給油通路２０内におけるオイル含まれる
空気は、各軸受用技給油通路２５．２６より各軸受１２
，１４に逃げるので、各ピポット部１６．１８のラッシ
ュアジャスタ１９における油圧室１９ｄに空気が入るこ
とを防止できる。In this case, by setting the openings 25a, 26a of the technical oil supply passages 25, 26 for each bearing to the annular oil supply chamber 32 at positions higher than the main oil supply passage 20 by an appropriate dimension (H), The air containing oil in the oil supply passage 20 is transferred to each bearing 12 from the oil supply passage 25, 26 for each bearing.
, 14, it is possible to prevent air from entering the hydraulic chamber 19d in the lash adjuster 19 of each pivot portion 16.18.

なお、前記実施例は、一本の主給油通路２０から、各ピ
ポット部ｘ６＝ｓに対して給油すると共に、両カム軸１
２．１３の各々における軸受に対しても給油する場合で
あったが、両カム軸１２゜１３の各々における軸受に対
する給油経路を、前記一本の主給油通路２０と別にして
も良く、また、各ピポット部１６．１８へのピポット部
技給油通路２７．２８は、前記実施例のように主給油通
路２０に連通することに代えて、環状給油室３２に連通
ずるようにしても良いのである。In addition, in the above embodiment, oil is supplied to each pivot portion x6=s from one main oil supply passage 20, and both camshafts 1
2.13, the bearings in each of the camshafts 12 and 13 may be oiled separately from the main oiling passage 20, and , the pivot part technical oil supply passages 27.28 to each pivot part 16.18 may be made to communicate with the annular oil supply chamber 32 instead of communicating with the main oil supply passage 20 as in the previous embodiment. be.

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

図面は本発明の実施例を示し、第１図はシリンダヘッド
の平面図、第２図は第１図の■−■視拡大断面図、第３
図は第１図のｍ−ｍ視拡大断面図、第４図は第１・図の
ＩＶ−ＩＶ視被拡大断面図第５図はピポット部の拡大断
面図である。 １・・・・シリンダヘッド、２・・・・燃焼室、３・・
・・吸気ポート、４・・・・排気ポート、５・・・・吸
気弁、７・・・・排気弁、９・・・・点火栓、１０・・
・・点火栓挿入筒、１１・・・・吸気弁用カム軸、１３
・・・・排気弁用カム軸、１２．１４・・・・軸受、１
５．１７・・・・揺動アーム、１６．１８・・・・ピポ
ット部、１９・・・・ラッシュアジャスタ、２ｏ・・・
・主給油通路、２５．２６・・・・軸受用伎給油通路、
２７．２８・・・・ピポット部用技給油通路、２９・・
・・内筒、３２・・・・環状給油室。The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of a cylinder head, FIG. 2 is an enlarged cross-sectional view taken along the line II of FIG.
4 is an enlarged sectional view taken along line IV-IV of FIG. 1, and FIG. 5 is an enlarged sectional view of the pivot portion. 1...Cylinder head, 2...Combustion chamber, 3...
...Intake port, 4...Exhaust port, 5...Intake valve, 7...Exhaust valve, 9...Spark plug, 10...
...Ignition plug insertion tube, 11...Intake valve camshaft, 13
... Exhaust valve camshaft, 12.14 ... Bearing, 1
5.17... Swinging arm, 16.18... Pivot part, 19... Lash adjuster, 2o...
・Main oil supply passage, 25.26... Bearing oil supply passage,
27.28... Pivot section oil supply passage, 29...
...Inner cylinder, 32...Annular oil supply chamber.

Claims (1)

【特許請求の範囲】[Claims] （１）、下面に、一列状に配設した各気筒に対する燃焼
室を凹み形成する一方、上面に、点火栓の挿入筒を前記
各燃焼室の箇所ごとに一体的に設けると共に、この各点
火栓挿入筒列を挟む左右両側の部位に吸気弁用揺動アー
ムのピポット部と排気弁用揺動アームのピポット部を一
体的に設けて成るＤＯＨＣ型内燃機関用シリンダヘッド
において、このシリンダヘッドには、前記各点火栓挿入
筒列の方向に延びる一本の主給油通路を、各点火栓挿入
筒内を貫通するように設けて、この主給油通路にシリン
ダブロック側からのオイル供給通路を接続し、前記各点
火栓挿入筒内には、当該点火栓挿入筒内に前記主給油通
路に連通する環状の給油室を成形するための内筒を各々
嵌挿する一方、前記吸気弁用揺動アーム及び排気弁用揺
動アームの各ピポット部には、前記主給油通路又は前記
環状給油室に連通するピポット部用枝給油通路を各々設
けたことを特徴とするＤＯＨＣ型内燃機関用シリンダヘ
ッドにおける給油装置。(1) A combustion chamber for each cylinder arranged in a row is formed on the lower surface, while an ignition plug insertion tube is integrally provided on the upper surface for each of the combustion chambers, and each ignition In a cylinder head for a DOHC type internal combustion engine, in which a pivot part of an intake valve swinging arm and a pivot part of an exhaust valve swinging arm are integrally provided on both the left and right sides of the plug insertion cylinder row, this cylinder head A main oil supply passage extending in the direction of each spark plug insertion cylinder row is provided so as to penetrate through each spark plug insertion cylinder, and an oil supply passage from the cylinder block side is connected to this main oil supply passage. An inner cylinder for forming an annular oil supply chamber that communicates with the main oil supply passage is inserted into each of the spark plug insertion cylinders, and an inner cylinder for forming an annular oil supply chamber communicating with the main oil supply passage is inserted into each of the spark plug insertion cylinders. A cylinder head for a DOHC internal combustion engine, characterized in that each pivot part of the arm and the swinging arm for an exhaust valve is provided with a branch oil supply passage for the pivot part communicating with the main oil supply passage or the annular oil supply chamber. Refueling device.
JP652887A 1987-01-14 1987-01-14 Oil feeder in cylinder head for double overhead camshaft type internal combustion engine Granted JPS63176612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP652887A JPS63176612A (en) 1987-01-14 1987-01-14 Oil feeder in cylinder head for double overhead camshaft type internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP652887A JPS63176612A (en) 1987-01-14 1987-01-14 Oil feeder in cylinder head for double overhead camshaft type internal combustion engine

Publications (2)

Publication Number Publication Date
JPS63176612A true JPS63176612A (en) 1988-07-20
JPH052809B2 JPH052809B2 (en) 1993-01-13

Family

ID=11640857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP652887A Granted JPS63176612A (en) 1987-01-14 1987-01-14 Oil feeder in cylinder head for double overhead camshaft type internal combustion engine

Country Status (1)

Country Link
JP (1) JPS63176612A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1914397A2 (en) * 2006-10-10 2008-04-23 Delphi Technologies, Inc. Hydraulic circuit for switchable cam followers
US7574991B2 (en) 2006-01-19 2009-08-18 Toyota Jidosha Kabushiki Kaisha Camshaft support structure for an internal combustion engine
US7845323B2 (en) 2007-07-06 2010-12-07 Brp-Powertrain Gmbh & Co Kg Internal combustion engine cam follower arrangement
KR101051244B1 (en) 2006-01-19 2011-07-21 도요타지도샤가부시키가이샤 Camshaft support structure of internal combustion engine and its assembly method
CN112012842A (en) * 2019-05-28 2020-12-01 马自达汽车株式会社 Cylinder head
EP3892832A1 (en) * 2020-04-09 2021-10-13 Segway Technology Co., Ltd. Camshaft cover, camshaft assembly, double-cylinder engine and all-terrain vehicle

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Publication number Priority date Publication date Assignee Title
JPS55144803U (en) * 1979-04-06 1980-10-17
JPS59194012A (en) * 1983-04-20 1984-11-02 Mazda Motor Corp Tappet mechanism of engine
JPS6079141A (en) * 1983-10-04 1985-05-04 Honda Motor Co Ltd Cylinder head for dohc 4-cycle internal-combustion engine
JPS6069346U (en) * 1983-10-20 1985-05-16 トヨタ自動車株式会社 Internal combustion engine spark plug hole structure
JPS6087308U (en) * 1983-11-22 1985-06-15 本田技研工業株式会社 Valve system for SOHC type 4-valve internal combustion engine
JPS60147520A (en) * 1984-01-12 1985-08-03 Yamaha Motor Co Ltd Lubricating oil supplying device in valve moving mechanism
JPS61122320U (en) * 1985-01-19 1986-08-01
JPS63150410A (en) * 1986-12-15 1988-06-23 Suzuki Motor Co Ltd Lubricating device of tappet valve system 4-cycle engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144803U (en) * 1979-04-06 1980-10-17
JPS59194012A (en) * 1983-04-20 1984-11-02 Mazda Motor Corp Tappet mechanism of engine
JPS6079141A (en) * 1983-10-04 1985-05-04 Honda Motor Co Ltd Cylinder head for dohc 4-cycle internal-combustion engine
JPS6069346U (en) * 1983-10-20 1985-05-16 トヨタ自動車株式会社 Internal combustion engine spark plug hole structure
JPS6087308U (en) * 1983-11-22 1985-06-15 本田技研工業株式会社 Valve system for SOHC type 4-valve internal combustion engine
JPS60147520A (en) * 1984-01-12 1985-08-03 Yamaha Motor Co Ltd Lubricating oil supplying device in valve moving mechanism
JPS61122320U (en) * 1985-01-19 1986-08-01
JPS63150410A (en) * 1986-12-15 1988-06-23 Suzuki Motor Co Ltd Lubricating device of tappet valve system 4-cycle engine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7574991B2 (en) 2006-01-19 2009-08-18 Toyota Jidosha Kabushiki Kaisha Camshaft support structure for an internal combustion engine
KR101051244B1 (en) 2006-01-19 2011-07-21 도요타지도샤가부시키가이샤 Camshaft support structure of internal combustion engine and its assembly method
EP1914397A2 (en) * 2006-10-10 2008-04-23 Delphi Technologies, Inc. Hydraulic circuit for switchable cam followers
EP1914397A3 (en) * 2006-10-10 2008-07-09 Delphi Technologies, Inc. Hydraulic circuit for switchable cam followers
US7455040B2 (en) 2006-10-10 2008-11-25 Delphi Technologies, Inc. Hydraulic circuit for switchable cam followers
US7845323B2 (en) 2007-07-06 2010-12-07 Brp-Powertrain Gmbh & Co Kg Internal combustion engine cam follower arrangement
CN112012842A (en) * 2019-05-28 2020-12-01 马自达汽车株式会社 Cylinder head
EP3744953A1 (en) * 2019-05-28 2020-12-02 Mazda Motor Corporation Cylinder head, and engine
CN112012842B (en) * 2019-05-28 2022-04-29 马自达汽车株式会社 Cylinder head
EP3892832A1 (en) * 2020-04-09 2021-10-13 Segway Technology Co., Ltd. Camshaft cover, camshaft assembly, double-cylinder engine and all-terrain vehicle
US11365702B2 (en) 2020-04-09 2022-06-21 Segway Technology Co., Ltd. Camshaft cover, camshaft assembly, and double-cylinder engine

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