JPH07102929A - Lubricating device of bearing part for cam shaft in dohc type internal combustion engine - Google Patents
Lubricating device of bearing part for cam shaft in dohc type internal combustion engineInfo
- Publication number
- JPH07102929A JPH07102929A JP25276393A JP25276393A JPH07102929A JP H07102929 A JPH07102929 A JP H07102929A JP 25276393 A JP25276393 A JP 25276393A JP 25276393 A JP25276393 A JP 25276393A JP H07102929 A JPH07102929 A JP H07102929A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- cam shaft
- cap body
- bearing
- bearing cap
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、シリンダヘッドの上面
に、吸気弁用のカム軸と、排気弁用のカム軸との両方を
軸支したＤＯＨＣ型内燃機関において、前記両カム軸に
おける各軸受け部に対する潤滑装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DOHC internal combustion engine in which both an intake valve cam shaft and an exhaust valve cam shaft are supported on the upper surface of a cylinder head. The present invention relates to a lubrication device for bearings.
【０００２】[0002]
【従来の技術】従来、ＤＯＨＣ型内燃機関において、吸
気弁用のカム軸と排気弁用のカム軸との両カム軸におけ
る各軸受け部に対する潤滑は、両カム軸の内部にその軸
線方向に延びる潤滑油通路を形成して、この潤滑油通路
内に、潤滑油ポンプからの潤滑油を、当該カム軸に対す
る複数の各軸受け部のうち一つの軸受け部等より導入し
たのち、この潤滑油通路内を通してその他の各軸受け部
に分配するように構成している（例えば、実公平２−６
９００５号公報等を参照）。2. Description of the Related Art Conventionally, in a DOHC type internal combustion engine, lubrication of bearing portions of both cam shafts for intake valves and cam shafts for exhaust valves extends axially inside both cam shafts. A lubricating oil passage is formed, and the lubricating oil from the lubricating oil pump is introduced into the lubricating oil passage from one of a plurality of bearing portions for the cam shaft, and the like. Is distributed to each of the other bearings through the
9005, etc.).
【０００３】[0003]
【発明が解決しようとする課題】そして、前記両カム軸
の内部に潤滑油通路を形成するに際しては、当該カム軸
を、鋳造にて製作するとき、同時にその内部に潤滑油通
路を鋳造にて形成する場合と、当該カム軸の内部におけ
る潤滑油通路をドリル工具による孔あけ加工にして形成
する場合とがあるが、前者の場合には、鋳造のプロセス
が複雑になるから、コストの大幅なアップを招来するの
であり、また、後者のように潤滑油通路を、ドリル工具
による孔あけ加工にして形成することは、両カム軸は細
長くてこれに細径の潤滑油通路を穿設することにより、
ドリル工具による孔あけ加工が困難であるから、これま
たコストが大幅にアップするのである。When forming the lubricating oil passages inside the both cam shafts, when the cam shafts are manufactured by casting, at the same time, the lubricating oil passages are formed by casting. There is a case where it is formed or a case where the lubricating oil passage inside the cam shaft is formed by drilling with a drill tool. In the former case, the casting process becomes complicated, so that the cost is significantly increased. In addition, forming the lubricating oil passage by drilling with a drill tool as in the latter means that both cam shafts are elongated and a small diameter lubricating oil passage is bored in it. Due to
Since it is difficult to make a hole with a drill tool, the cost is also greatly increased.
【０００４】しかも、いずれの場合においても、カム軸
の内部に潤滑油通路を軸線方向に延びるように形成する
ことにより、カム軸の強度が低下することになるから、
この分だけカム軸の直径を大きくしなければならないの
である。本発明は、ＤＯＨＣ型内燃機関における両カム
軸の各軸受け部に対して、潤滑油を、当該両カム軸の内
部に潤滑油通路を形成することなく、確実に供給できる
ようにした潤滑装置を提供することを技術的課題とする
ものである。In any case, since the lubricating oil passage is formed in the cam shaft so as to extend in the axial direction, the strength of the cam shaft is reduced.
The diameter of the camshaft must be increased by this amount. The present invention provides a lubricating device capable of reliably supplying lubricating oil to each bearing portion of both camshafts in a DOHC type internal combustion engine without forming a lubricating oil passage inside the camshafts. It is a technical issue to provide.
【０００５】[0005]
【課題を解決するための手段】この技術的課題を達成す
るため本発明は、シリンダヘッドの上面に、吸気弁用の
カム軸を、シリンダヘッドに一体的に造形した複数個の
軸受け部とこの各軸受け部に対する軸受けキャップ体と
で軸支すると共に、排気弁用のカム軸を、シリンダヘッ
ドに一体的に造形した複数個の軸受け部とこの各軸受け
部に対する軸受けキャップ体とで軸支して成るＤＯＨＣ
型内燃機関において、前記吸気弁用カム軸の各軸受けキ
ャップ体と前記排気弁用カム軸の各軸受けキャップ体と
の間に、これらを一体的に連結する連結部を各々設け
て、この各連結部に、吸気弁用カム軸の各軸受けキャッ
プ体の内面における潤滑油供給溝と排気弁用カム軸の各
軸受けキャップ体の内面における潤滑油供給溝とを互い
に連通する潤滑油分配通路を設ける一方、前記シリンダ
ヘッドに、潤滑油ポンプから前記各連結部のうち一つの
連結部における潤滑油分配通路への潤滑油供給通路を穿
設し、更に、前記シリンダヘッドに、前記各連結部にお
ける潤滑油分配通路の相互間を連通するか、或いは、吸
気弁用カム軸の各軸受けキャップ体における潤滑油供給
溝の相互間又は排気弁用カム軸の各軸受けキャップ体に
おける潤滑油供給溝の相互間を連通するようにした潤滑
油連通通路を穿設すると言う構成にした。In order to achieve this technical object, the present invention provides a plurality of bearing portions integrally formed on the cylinder head on the upper surface of the cylinder head, the cam shaft for the intake valve being formed integrally with the cylinder head. The bearing caps for the bearings are rotatably supported, and the camshaft for the exhaust valve is rotatably supported by the plurality of bearings integrally formed on the cylinder head and the bearing caps for the bearings. DOHC
Type internal combustion engine, a connecting portion for integrally connecting these is provided between each bearing cap body of the intake valve cam shaft and each bearing cap body of the exhaust valve cam shaft. A lubricating oil distribution passage that connects the lubricating oil supply groove on the inner surface of each bearing cap body of the intake valve cam shaft and the lubricating oil supply groove on the inner surface of each bearing cap body of the exhaust valve cam shaft to each other. A lubricating oil supply passage is bored in the cylinder head from a lubricating oil pump to a lubricating oil distribution passage in one of the connecting portions, and the cylinder head is further provided with lubricating oil in the connecting portion. The distribution passages are communicated with each other, or the lubricating oil supply grooves of the bearing caps of the intake valve camshaft are connected to each other or the lubricating oil supply grooves of the bearing caps of the exhaust valve camshaft are connected to each other. And to the configuration referred to as drilling lubricant communicating passage so as to communicate between each other.
【０００６】[0006]
【作 用】この構成において、潤滑油ポンプから潤滑
油供給通路を介して一つの連結部における潤滑油分配通
路に供給された潤滑油は、当該一つの連結部によって互
いに連結する吸気弁用カム軸の軸受けキャップ体及び排
気弁用カム軸の軸受けキャップ体の内面における潤滑油
供給溝に各々分配されると同時に、潤滑油連通通路を介
して他の連結部における潤滑油分配通路に供給されたの
ち、当該他の連結部にて互いに連結する吸気弁用カム軸
の軸受けキャップ体及び排気弁用カム軸の軸受けキャッ
プ体の内面における潤滑油供給溝に各々分配されること
になるか、或いは、前記一つの連結部における潤滑油分
配通路に供給された潤滑油は、当該一つの連結部によっ
て互いに連結する吸気弁用カム軸の軸受けキャップ体及
び排気弁用カム軸の軸受けキャップ体の内面における潤
滑油供給溝に各々分配されると同時に、潤滑油連通通路
を介してその他の吸気弁用カム軸に対する各軸受けキャ
ップ体及び排気弁用カム軸に対する各軸受けキャップ体
における潤滑油供給溝に各々分配されることになるか
ら、吸気弁用カム軸に対する各軸受け部と、排気弁用カ
ム軸に対する各軸受け部とを確実に潤滑することができ
るのである。[Operation] In this structure, the lubricating oil supplied from the lubricating oil pump through the lubricating oil supply passage to the lubricating oil distribution passage in one connecting portion is used for the intake valve camshaft that is connected to each other by the one connecting portion. After being distributed to the lubricating oil supply grooves in the inner surfaces of the bearing cap body and the bearing cap body of the exhaust valve cam shaft, at the same time as being supplied to the lubricating oil distribution passages in other connecting portions via the lubricating oil communication passages. , The lubricating oil supply groove on the inner surface of the bearing cap body of the intake valve cam shaft and the bearing cap body of the exhaust valve cam shaft, which are connected to each other at the other connecting portion, or Lubricating oil supplied to the lubricating oil distribution passage in one connecting portion is connected to each other by the one connecting portion, and the bearing cap body of the intake valve camshaft and the exhaust valve camshaft shaft are connected to each other. At the same time as being distributed to the lubricating oil supply grooves on the inner surface of the receiving cap body, through the lubricating oil communication passage, lubrication of each bearing cap body for the other intake valve cam shafts and each bearing cap body for the exhaust valve cam shafts Since the oil is distributed to the oil supply grooves, the bearings for the intake valve cam shaft and the bearings for the exhaust valve cam shaft can be reliably lubricated.
【０００７】[0007]
【発明の効果】このように本発明によると、吸気弁用カ
ム軸に対する各軸受け部と、排気弁用カム軸に対する各
軸受け部とを確実に潤滑することができて、従来のよう
に、前記両カム軸の各々にその軸線に延びる潤滑油通路
を形成することを省略できるから、両カム軸の製造コス
トを大幅に低減できると共に、両カム軸の直径を小さく
することができる効果を有する。As described above, according to the present invention, it is possible to surely lubricate each bearing portion for the intake valve cam shaft and each bearing portion for the exhaust valve cam shaft. Since it is possible to omit the formation of the lubricating oil passage extending along the axis of each of the cam shafts, it is possible to significantly reduce the manufacturing cost of both cam shafts and to reduce the diameters of both cam shafts.
【０００８】[0008]
【実施例】以下、本発明の実施例を、図面について説明
する。図において符号１は、図示しないシリンダブロッ
クの上面に締結された鋳鉄又は軽合金製のシリンダヘッ
ドを示し、該シリンダヘッド１の上面には、吸気弁用の
カム軸２が、シリンダヘッド１に一体的に造形した複数
個の軸受け部３と、当該各軸受け部３の各々に対して一
対のボルト５にて締結される軸受けキャップ体４とによ
って軸支されている。更に、前記シリンダヘッド１の上
面には、排気弁用のカム軸６が、シリンダヘッド１に一
体的に造形した複数個の軸受け部７と、当該各軸受け部
７の各々に対して一対のボルト９にて締結される軸受け
キャップ体８とによって軸支されている。Embodiments of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a cast iron or light alloy cylinder head fastened to the upper surface of a cylinder block (not shown). On the upper surface of the cylinder head 1, a cam shaft 2 for an intake valve is integrated with the cylinder head 1. Are axially supported by a plurality of bearing portions 3 that are shaped in a model and a bearing cap body 4 that is fastened to each of the bearing portions 3 with a pair of bolts 5. Further, on the upper surface of the cylinder head 1, a cam shaft 6 for an exhaust valve, a plurality of bearing portions 7 formed integrally with the cylinder head 1, and a pair of bolts for each of the bearing portions 7 are formed. It is rotatably supported by a bearing cap body 8 fastened at 9.
【０００９】また、前記シリンダヘッド１の上面には、
吸気用カム軸２に対する各軸受け部３と、排気弁用カム
軸６における各軸受け部７との間の部位に、点火栓装着
用のパイプ１６が立設されている。前記吸気弁用カム軸
２に対する各軸受けキャップ体４の内面、及び前記排気
弁用カム軸６に対する各軸受けキャップ体８の内面に
は、各々潤滑油供給溝１０，１１が円周方向に延びるよ
うに刻設されている。On the upper surface of the cylinder head 1,
A pipe 16 for mounting a spark plug is erected at a portion between each bearing portion 3 for the intake camshaft 2 and each bearing portion 7 for the exhaust valve camshaft 6. Lubricating oil supply grooves 10 and 11 extend in the circumferential direction on the inner surface of each bearing cap body 4 for the intake valve cam shaft 2 and on the inner surface of each bearing cap body 8 for the exhaust valve cam shaft 6. It is engraved on.
【００１０】そして、前記吸気弁用カム軸２に対する各
軸受けキャップ体４と、前記排気弁用カム軸６に対する
各軸受けキャップ体８とを、前記点火栓装着用パイプ１
０の外周を巡るように略円形にした連結部１２にて一体
的に連結し、この連結部１２の下面に、吸気弁用カム
軸２に対する各軸受けキャップ体４における潤滑油供給
溝１０と、排気弁用カム軸６に対する各軸受けキャップ
体８における潤滑油供給溝１１とを互いに連通する潤滑
油分配通路１３を刻設する。Then, each bearing cap body 4 for the intake valve cam shaft 2 and each bearing cap body 8 for the exhaust valve cam shaft 6 are connected to the spark plug mounting pipe 1.
0 is connected integrally by a substantially circular connecting portion 12 so as to go around the outer periphery of 0, and the intake valve cam is attached to the lower surface of the connecting portion 12.
A lubricating oil distribution passage 13 is provided to connect the lubricating oil supply groove 10 in each bearing cap body 4 with respect to the shaft 2 and the lubricating oil supply groove 11 in each bearing cap body 8 with respect to the exhaust valve cam shaft 6 to each other.
【００１１】更に、前記シリンダヘッド１には、シリン
ダブロック側における潤滑油ポンプ（図示せず）からの
潤滑油供給通路１４を、当該潤滑油供給通路１４が前記
各連結部１２のうち一つの連結部１２における潤滑油分
配通路１３に対して連通するように穿設する。更に、前
記シリンダヘッド１には、前記排気弁用カム軸６に対す
る各軸受けキャップ体８における潤滑油供給溝１１の相
互間を互いに連通するための潤滑油連通通路１５を、気
筒列の方向に延びるように穿設する。Further, the cylinder head 1 is provided with a lubricating oil supply passage 14 from a lubricating oil pump (not shown) on the cylinder block side, and the lubricating oil supply passage 14 is connected to one of the connecting portions 12. It is provided so as to communicate with the lubricating oil distribution passage 13 in the portion 12. Further, in the cylinder head 1, a lubricating oil communication passage 15 for communicating between the lubricating oil supply grooves 11 in each bearing cap body 8 with respect to the exhaust valve cam shaft 6 extends in the cylinder row direction. To drill.
【００１２】この構成において、シリンダブロック側に
おける潤滑油ポンプから潤滑油供給通路１４を介して一
つの連結部１２における潤滑油分配通路１３に供給され
た潤滑油は、当該一つの連結部１２によって互いに連結
する吸気弁用カム軸２の軸受けキャップ体４及び排気弁
用カム軸６の軸受けキャップ体８の内面における潤滑油
供給溝１０，１１に各々分配される同時に、潤滑油連通
通路１５を介してその他の排気弁用カム軸６に対する各
軸受けキャップ体８における潤滑油供給溝１１に分配さ
れ、更に、この潤滑油供給溝１１から連結部１２におけ
る潤滑油分配通路１３を介してその他の吸気弁用カム軸
２に対する各軸受けキャップ体４における潤滑油供給溝
１０に分配されることになるから、吸気弁用カム軸２に
対する各軸受け部３と、排気弁用カム軸６に対する各軸
受け部７とを確実に潤滑することができるのである。In this structure, the lubricating oil supplied from the lubricating oil pump on the cylinder block side to the lubricating oil distribution passage 13 in one connecting portion 12 via the lubricating oil supply passage 14 is mutually connected by the one connecting portion 12. At the same time, the bearing cap body 4 of the intake valve cam shaft 2 and the bearing cap body 8 of the exhaust valve cam shaft 6 are respectively distributed to the lubricating oil supply grooves 10 and 11 on the inner surfaces of the bearing cap body 8 and the lubricating oil communication passage 15. It is distributed to the lubricating oil supply groove 11 in each bearing cap body 8 for the other exhaust valve camshaft 6, and further for the other intake valve from this lubricating oil supply groove 11 via the lubricating oil distribution passage 13 in the connecting portion 12. Since it is distributed to the lubricating oil supply groove 10 in each bearing cap body 4 for the cam shaft 2, each bearing portion for the intake valve cam shaft 2 is provided. When, it is possible to reliably lubricate the respective bearing portions 7 with respect to the cam shaft 6 for the exhaust valve.
【００１３】なお、前記実施例は、シリンダヘッド１に
穿設する潤滑油連通通路１５にて、排気弁用カム軸６に
対する各軸受けキャップ体８における潤滑油供給溝１１
の相互間を互いに連通するように構成した場合を示した
が、この潤滑油連通通路１５にて、吸気弁用カム軸２に
対する各軸受けキャップ体４における潤滑油供給溝１０
の相互間を互いに連通するように構成しても良いのであ
る。In the above embodiment, in the lubricating oil communication passage 15 bored in the cylinder head 1, the lubricating oil supply groove 11 in each bearing cap body 8 for the exhaust valve cam shaft 6 is provided.
Although the configuration is shown in which the two are communicated with each other, in the lubricating oil communication passage 15, the lubricating oil supply groove 10 in each bearing cap body 4 for the intake valve cam shaft 2 is provided.
It may be configured such that the two communicate with each other.
【００１４】このように、排気弁用カム軸６に対する各
軸受けキャップ体８における潤滑油供給溝１１の相互
間、又は吸気弁用カム軸２に対する各軸受けキャップ体
４における潤滑油供給溝１０の相互間を互いに連通する
ことに代えて、各連結部１２における潤滑油分配通路１
３の相互間を、シリンダヘッド１のうち図１及び図２に
二点鎖線で示すような部位に穿設した潤滑油連通通路１
５′にて連通するように構成してもよいのである。As described above, the lubricating oil supply grooves 11 of the bearing cap bodies 8 for the exhaust valve cam shaft 6 are mutually connected or the lubricating oil supply grooves 10 of the bearing cap bodies 4 for the intake valve cam shaft 2 are mutually connected. Instead of communicating the spaces with each other, the lubricating oil distribution passage 1 in each connecting portion 12
3 between the lubricating oil communication passages 1 formed in the cylinder head 1 at the portions indicated by the chain double-dashed lines in FIGS. 1 and 2.
It may be configured to communicate at 5 '.
【００１５】この構成によると、一つの連結部１２にお
ける潤滑油分配通路１３に対して潤滑油ポンプからの潤
滑油供給通路１４を介して供給された潤滑油は、当該一
つの連結部１２によって互いに連結する吸気弁用カム軸
２の軸受けキャップ体４及び排気弁用カム軸６の軸受け
キャップ体８の内面における潤滑油供給溝１０，１１に
各々分配されると同時に、潤滑油連通通路１５′を介し
て他の連結部１２における潤滑油分配通路１３に供給さ
れたのち、当該他の連結部１２にて互いに連結する吸気
弁用カム軸２の軸受けキャップ体４及び排気弁用カム軸
６の軸受けキャップ体８の内面における潤滑油供給溝１
０，１１に各々分配されることになる。According to this structure, the lubricating oils supplied to the lubricating oil distribution passages 13 in the one connecting portion 12 through the lubricating oil supply passages 14 from the lubricating oil pump are mutually connected by the one connecting portion 12. At the same time as being distributed to the lubricating oil supply grooves 10 and 11 on the inner surface of the bearing cap body 4 of the intake valve cam shaft 2 and the bearing cap body 8 of the exhaust valve cam shaft 6, the lubricating oil communication passage 15 'is formed. The bearing cap body 4 of the intake valve cam shaft 2 and the bearing of the exhaust valve cam shaft 6 which are supplied to the lubricating oil distribution passage 13 in the other connecting portion 12 through the other connecting portion 12 and are then connected to each other. Lubricating oil supply groove 1 on the inner surface of the cap body 8
It will be distributed to 0 and 11, respectively.
【図１】本発明の実施例を示す平面図である。FIG. 1 is a plan view showing an embodiment of the present invention.
【図２】図１のII−II視拡大断面図である。FIG. 2 is an enlarged sectional view taken along line II-II of FIG.
【図３】両カム軸に対する軸受けキャップを下から見た
ときの斜視図である。FIG. 3 is a perspective view of a bearing cap for both cam shafts when viewed from below.
１ シリンダヘッド ２ 吸気弁用カム軸 ３ 吸気弁用カム軸に対する軸受け部 ４ 吸気弁用カム軸に対する軸受けキャ
ップ体 ６ 排気弁用カム軸 ７ 排気弁用カム軸に対する軸受け部 ８ 排気弁用カム軸に対する軸受けキャ
ップ体 １０，１１ 潤滑油供給溝 １２ 連結部 １３ 潤滑油分配通路 １４ 潤滑油供給通路 １５，１５′ 潤滑油連通通路1 Cylinder Head 2 Intake Valve Cam Shaft 3 Bearing Part for Intake Valve Cam Shaft 4 Bearing Cap Body for Intake Valve Cam Shaft 6 Exhaust Valve Cam Shaft 7 Bearing Part for Exhaust Valve Cam Shaft 8 Exhaust Valve Cam Shaft Bearing cap body 10, 11 Lubricating oil supply groove 12 Connecting portion 13 Lubricating oil distribution passage 14 Lubricating oil supply passage 15, 15 'Lubricating oil communication passage
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｆ 1/24 Ｒ 8109−3Ｇ Ｆ１６Ｃ 33/10 Ｚ 6814−3Ｊ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location F02F 1/24 R 8109-3G F16C 33/10 Z 6814-3J
Claims (1)
軸を、シリンダヘッドに一体的に造形した複数個の軸受
け部とこの各軸受け部に対する軸受けキャップ体とで軸
支すると共に、排気弁用のカム軸を、シリンダヘッドに
一体的に造形した複数個の軸受け部とこの各軸受け部に
対する軸受けキャップ体とで軸支して成るＤＯＨＣ型内
燃機関において、前記吸気弁用カム軸の各軸受けキャッ
プ体と前記排気弁用カム軸の各軸受けキャップ体との間
に、これらを一体的に連結する連結部を各々設けて、こ
の各連結部に、吸気弁用カム軸の各軸受けキャップ体の
内面における潤滑油供給溝と排気弁用カム軸の各軸受け
キャップ体の内面における潤滑油供給溝とを互いに連通
する潤滑油分配通路を設ける一方、前記シリンダヘッド
に、潤滑油ポンプから前記各連結部のうち一つの連結部
における潤滑油分配通路への潤滑油供給通路を穿設し、
更に、前記シリンダヘッドに、前記各連結部における潤
滑油分配通路の相互間を連通するか、或いは、吸気弁用
カム軸の各軸受けキャップ体における潤滑油供給溝の相
互間又は排気弁用カム軸の各軸受けキャップ体における
潤滑油供給溝の相互間を連通するようにした潤滑油連通
通路を穿設することを特徴とするＤＯＨＣ型内燃機関に
おけるカム軸用軸受け部の潤滑装置。1. A camshaft for an intake valve is rotatably supported on a top surface of a cylinder head by a plurality of bearing portions integrally formed on the cylinder head and a bearing cap body for each bearing portion, and an exhaust valve. A DOHC type internal combustion engine in which a camshaft for a vehicle is rotatably supported by a plurality of bearings integrally formed on a cylinder head and bearing caps for the bearings. Between the cap body and each bearing cap body of the exhaust valve cam shaft, a connecting portion that integrally connects these is provided, and at each connecting portion, the bearing cap body of each intake valve cam shaft is provided. A lubricating oil distribution passage that connects the lubricating oil supply groove on the inner surface and the lubricating oil supply groove on the inner surface of each bearing cap of the exhaust valve cam shaft to each other is provided, while the cylinder head is provided with a lubricating oil pump. Bored a lubricating oil supply passage to the lubricating oil distribution passage in one of the connecting portions among al the respective connecting portions,
Further, the cylinder head communicates with each other between the lubricating oil distribution passages in each of the connecting portions, or between the lubricating oil supply grooves in each of the bearing caps of the intake valve cam shaft or the exhaust valve cam shaft. A lubricating device for a camshaft bearing portion in a DOHC type internal combustion engine, characterized in that a lubricating oil communication passage is bored so as to communicate between the lubricating oil supply grooves in each bearing cap body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25276393A JPH07102929A (en) | 1993-10-08 | 1993-10-08 | Lubricating device of bearing part for cam shaft in dohc type internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25276393A JPH07102929A (en) | 1993-10-08 | 1993-10-08 | Lubricating device of bearing part for cam shaft in dohc type internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07102929A true JPH07102929A (en) | 1995-04-18 |
Family
ID=17241959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25276393A Pending JPH07102929A (en) | 1993-10-08 | 1993-10-08 | Lubricating device of bearing part for cam shaft in dohc type internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102929A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194154A (en) * | 2005-01-13 | 2006-07-27 | Daihatsu Motor Co Ltd | Hydraulic feeder in multi-cylinder internal combustion engine |
| JP2007285236A (en) * | 2006-04-18 | 2007-11-01 | Honda Motor Co Ltd | Internal combustion engine having accessories rotary-driven by camshaft |
| JP2011038432A (en) * | 2009-08-07 | 2011-02-24 | Mazda Motor Corp | Thrust regulating part structure of camshaft of engine |
| US8166939B2 (en) * | 2009-03-05 | 2012-05-01 | GM Global Technology Operations LLC | Cam bearing surface of an engine cylinder head that includes an axially extending oil passage |
| JP2013113148A (en) * | 2011-11-25 | 2013-06-10 | Honda Motor Co Ltd | Oil passage structure of internal combustion engine |
| CN104088717A (en) * | 2014-06-24 | 2014-10-08 | 广西玉林市朗泰汽车零部件有限公司 | Diesel engine bearing cover |
| EP3236026A1 (en) * | 2016-04-21 | 2017-10-25 | Hyundai Motor Company | Cam carrier module for vehicles |
-
1993
- 1993-10-08 JP JP25276393A patent/JPH07102929A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194154A (en) * | 2005-01-13 | 2006-07-27 | Daihatsu Motor Co Ltd | Hydraulic feeder in multi-cylinder internal combustion engine |
| JP4544460B2 (en) * | 2005-01-13 | 2010-09-15 | ダイハツ工業株式会社 | Hydraulic supply device for multi-cylinder internal combustion engine |
| JP2007285236A (en) * | 2006-04-18 | 2007-11-01 | Honda Motor Co Ltd | Internal combustion engine having accessories rotary-driven by camshaft |
| US8166939B2 (en) * | 2009-03-05 | 2012-05-01 | GM Global Technology Operations LLC | Cam bearing surface of an engine cylinder head that includes an axially extending oil passage |
| JP2011038432A (en) * | 2009-08-07 | 2011-02-24 | Mazda Motor Corp | Thrust regulating part structure of camshaft of engine |
| JP2013113148A (en) * | 2011-11-25 | 2013-06-10 | Honda Motor Co Ltd | Oil passage structure of internal combustion engine |
| CN104088717A (en) * | 2014-06-24 | 2014-10-08 | 广西玉林市朗泰汽车零部件有限公司 | Diesel engine bearing cover |
| EP3236026A1 (en) * | 2016-04-21 | 2017-10-25 | Hyundai Motor Company | Cam carrier module for vehicles |
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