JPH045687Y2 - - Google Patents
Info
- Publication number
- JPH045687Y2 JPH045687Y2 JP6457585U JP6457585U JPH045687Y2 JP H045687 Y2 JPH045687 Y2 JP H045687Y2 JP 6457585 U JP6457585 U JP 6457585U JP 6457585 U JP6457585 U JP 6457585U JP H045687 Y2 JPH045687 Y2 JP H045687Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- oil supply
- supply passage
- cylinder head
- orifice
- 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 10
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Description
【考案の詳細な説明】
Ａ 考案の目的
(1) 産業上の利用分野
本考案は内燃機関のシリンダヘツドに組付けら
れる動弁機構の給油装置に関するものである。[Detailed Description of the Invention] A. Purpose of the Invention (1) Field of Industrial Application The present invention relates to a lubricating device for a valve mechanism assembled to a cylinder head of an internal combustion engine.
(2) 従来の技術
従来内燃機関の動弁機構に給油するための給油
路をシリンダヘツドに設けたものは既に知られて
いる（特開昭58−210309号公報参照）。(2) Prior Art It is already known that a cylinder head is provided with an oil supply passage for supplying oil to a valve train of an internal combustion engine (see Japanese Patent Application Laid-Open No. 58-210309).
(3) 考案が解決しようとする問題点
ところで前記動弁機構に供給される油の流量を
制御するためには、給油通路の途中にオリフイス
を設ければよいが、前記動弁機構の応動性を良好
にするには、機関の始動時にも動弁機構への圧油
の供給を迅速に行うべく前記オリフイスは動弁機
構の給油口にできるだけ近ずけることが望まし
い。而してこのような要求を満すためには前記オ
リフイスはシリンダヘツド側の給油通路に設ける
必要がある。(3) Problems to be solved by the invention By the way, in order to control the flow rate of oil supplied to the valve mechanism, it is sufficient to provide an orifice in the middle of the oil supply passage, but the responsiveness of the valve mechanism In order to improve this, it is desirable that the orifice be located as close as possible to the oil supply port of the valve mechanism in order to quickly supply pressure oil to the valve mechanism even when the engine is started. In order to satisfy these requirements, the orifice must be provided in the oil supply passage on the cylinder head side.
本考案はシリンダブロツク上にシリンダヘツド
を結着するためのヘツドボルトを利用してシリン
ダヘツドの給油通路に設けられるオリフイスの位
置規制をすることができるようにした内燃機関に
おける動弁機構の給油装置を提供することを目的
とするものである。 The present invention provides a lubricating system for a valve train in an internal combustion engine, in which the position of an orifice provided in the oil supply passage of the cylinder head can be regulated using a head bolt for fixing the cylinder head onto the cylinder block. The purpose is to provide
Ｂ 考案の構成
(1) 問題点を解決するための手段
本考案によれば、前記目的達成のためシリンダ
ブロツク上にヘツドボルトを以て結着されるシリ
ンダヘツドに、動弁機構を組付けてなる内燃機関
において、前記シリンダヘツドには、前記動弁機
構に給油するための給油通路を形成し、この給油
通路の途中に該通路を流れる油の流量を制御する
ためのオリフイスを設け、このオリフイスの一端
面を前記給油通路に形成した係止段部に係合さ
せ、またその他端面を前記ヘツドボルトの外側面
に対面させる。B. Structure of the invention (1) Means for solving the problems According to the invention, in order to achieve the above-mentioned object, an internal combustion engine is provided in which a valve mechanism is assembled to a cylinder head that is connected to a cylinder block with a head bolt. In the cylinder head, an oil supply passage for supplying oil to the valve mechanism is formed, and an orifice for controlling the flow rate of oil flowing through the passage is provided in the middle of the oil supply passage, and one end surface of the orifice is provided. is engaged with a locking step formed in the oil supply passage, and the other end face is made to face the outer surface of the head bolt.
(2) 作用
シリンダヘツドに形成した、動弁機構への給油
通路の途中に設けられる流量制御用オリフイス
は、シリンダブロツク上にシリンダヘツドを結着
するヘツドボルトによりその位置が規制される。(2) Function The position of the flow rate control orifice formed in the cylinder head in the middle of the oil supply passage to the valve mechanism is regulated by the head bolt that connects the cylinder head to the cylinder block.
(3) 実施例
以下、図面により油圧タペツト付動弁機構に本
考案を実施した実施例について説明する。(3) Embodiments Hereinafter, embodiments in which the present invention is applied to a valve mechanism with a hydraulic tappet will be described with reference to the drawings.
DOHC型４サイクル内燃機関の機関本体Ｅは、
シリンダブロツク１と、その上にガスケツト３を
介して重合されるシリンダヘツド２とを備え、そ
れらはヘツドボルト４（第３図）によつて一体に
結着される。 The engine body E of the DOHC type 4-stroke internal combustion engine is
It comprises a cylinder block 1 and a cylinder head 2 superimposed thereon via a gasket 3, which are joined together by head bolts 4 (FIG. 3).
機関本体Ｅのシリンダヘツド２には、燃焼室５
と、その燃焼室５に開口する吸、排気ポート６，
７とが形成され、それらのポート６，７は、シリ
ンダヘツド２に昇降可能に支持される吸、排気弁
８，９によつてそれぞれ開閉される。 The cylinder head 2 of the engine body E has a combustion chamber 5.
and intake and exhaust ports 6 opening into the combustion chamber 5,
7 are formed, and these ports 6, 7 are opened and closed, respectively, by intake and exhaust valves 8, 9 which are supported on the cylinder head 2 so as to be movable up and down.
前記吸、排気弁８，９はそれぞれ油圧タペツト
１０，１０を備えた動弁機構１１によつて所定の
タイミングを以て開閉駆動される。 The intake and exhaust valves 8 and 9 are driven to open and close at predetermined timing by a valve operating mechanism 11 having hydraulic tappets 10 and 10, respectively.
前記動弁機構１１は、シリンダヘツド２の上面
に形成される動弁室１２内に設けられる。 The valve operating mechanism 11 is provided within a valve operating chamber 12 formed on the upper surface of the cylinder head 2.
前記油圧タペツト１０付の動弁機構１１は従来
公知の構造を備えるもので、シリンダヘツド２の
中央部にはＶ字状に一対の支持孔１３、１３が形
成され、これらの支持孔１３，１３に油圧タペツ
ト１０，１０がそれぞれ装着される。各油圧タペ
ツト１０，１０の作動端部、すなわちプランジヤ
１４，１４の球面状上端には吸、排気用カムフオ
ロア１５，１６の一端が連接され、それらのカム
フオロア１５，１６の他端は弁ばね２１，２２に
よつてそれぞれ閉弁方向に付勢される吸、排気弁
８，９の上端に係合される。吸、排気用カムフオ
ロア１５，１６の中間部上面にそれぞれ形成され
るスリツパ面には、一対の動弁カム軸１７，１８
の吸、排気カム１９，２０が圧接され、これら
吸、排気カム１９，２０の回転と、前記弁ばね２
１，２２との協働により吸、排気弁８，９は所定
のタイミングで開閉作動される。吸、排気用の一
対の動弁カム軸１７，１８は、シリンダヘツド２
上に設けられる軸受２３，２４によつてそれぞれ
回転自在に支承される。 The valve mechanism 11 with the hydraulic tappet 10 has a conventionally known structure, and a pair of V-shaped support holes 13, 13 are formed in the center of the cylinder head 2. Hydraulic tappets 10, 10 are respectively mounted on the mounts. One end of suction/exhaust cam followers 15, 16 is connected to the operating end of each hydraulic tappet 10, 10, that is, the spherical upper end of the plunger 14, 14, and the other end of these cam followers 15, 16 is connected to a valve spring 21, 22, the upper ends of the intake and exhaust valves 8 and 9 are respectively biased in the valve closing direction. A pair of valve drive camshafts 17 and 18 are provided on the slipper surfaces formed on the upper surfaces of the intermediate portions of the intake and exhaust cam followers 15 and 16, respectively.
The suction and exhaust cams 19 and 20 are pressed against each other, and the rotation of these suction and exhaust cams 19 and 20 and the valve spring 2
1 and 22, the intake and exhaust valves 8 and 9 are opened and closed at predetermined timing. A pair of valve drive camshafts 17 and 18 for intake and exhaust are connected to the cylinder head 2.
They are each rotatably supported by bearings 23 and 24 provided above.
次に前記油圧タペツト１０，１０に圧油を供給
するための給油系について説明すると、シリンダ
ブロツク１には、油圧タペツト１０，１０に給油
するための給油通路２５が形成される。この給油
通路２５は第２，３図に示すようにシリンダヘツ
ド２を上下方向にのびて、シリンダブロツク１側
の給油路２６を介して図示しない油圧ポンプに通
じる主給油路２５1と、この主給油路２５1に連通
されてシリンダヘツド２の中央部をその幅方向に
略水平にのびる第１分配油路２５2と、この第１
分配油路２５2に連通されてシリンダヘツド２の
中央部をその長手方向に略水平に平行にのびる２
条の第２分配油路２５3とより構成されている。 Next, the oil supply system for supplying pressure oil to the hydraulic tappets 10, 10 will be explained. The cylinder block 1 is formed with an oil supply passage 25 for supplying oil to the hydraulic tappets 10, 10. As shown in FIGS. 2 and 3, this oil supply passage 25 extends vertically through the cylinder head 2, and connects to a main oil supply passage 251 which communicates with a hydraulic pump (not shown) via an oil supply passage 26 on the cylinder block 1 side. A first distribution oil passage 25 2 communicates with the oil supply passage 25 1 and extends approximately horizontally in the width direction of the central portion of the cylinder head 2;
A distribution oil passage 25 2 is connected to the distribution oil passage 25 2 and extends substantially horizontally and parallel to the central portion of the cylinder head 2 in its longitudinal direction.
It consists of a second distribution oil passage 25 and 3 .
前記主給油路２５1は、シリンダブロツク１と
シリンダヘツド２とを連結する前記ヘツドボルト
４の通し孔を兼ねており、その下端がヘツド側給
油路２６を介して図示しない油圧ポンプに連通さ
れる。 The main oil supply passage 251 also serves as a through hole for the head bolt 4 that connects the cylinder block 1 and the cylinder head 2, and its lower end communicates with a hydraulic pump (not shown) via a head side oil supply passage 26.
また前記第１分配油路２５2は、その途中にＯ
リング２７を介してオリフイス２８が挿入され
る。このオリフイス２８の一端面は第１分配油路
２５2に形成した係止段部２９に係合され、また
その他端面は前記ヘツドボルト４の側面に対面
し、前記オリフイス２８の軸方向の位置が規制さ
れる。 Further, the first distribution oil passage 25 2 has an O
An orifice 28 is inserted through the ring 27. One end surface of this orifice 28 is engaged with a locking step 29 formed in the first distribution oil passage 252 , and the other end surface faces the side surface of the head bolt 4, so that the axial position of the orifice 28 is restricted. be done.
前記第２分配油路２５3，２５3は、前記支持孔
１３，１３の一側面をよぎつており、該支持孔１
３，１３を介して油圧タペツト１０，１０の給油
孔に連通される。したがつて、油圧ポンプからの
加圧油は、ブロツク側給油路２６から主給油路２
５1、第１分配油路２５2、オリフイス２８、第２
分配油路２５3，２５3を通つて油圧タペツト１
０，１０に給油される。 The second distribution oil passages 25 3 , 25 3 cross one side of the support holes 13 , 13 , and the support holes 1
3 and 13 to the oil supply holes of the hydraulic tappets 10 and 10. Therefore, pressurized oil from the hydraulic pump flows from the block side oil supply path 26 to the main oil supply path 2.
5 1 , first distribution oil passage 25 2 , orifice 28 , second
Hydraulic tappet 1 passes through distribution oil passages 25 3 , 25 3
Refueled at 0,10.
次に本考案の実施例の作用について説明する。 Next, the operation of the embodiment of the present invention will be explained.
いま機関の運転により一対の動弁カム軸１７，
１８が回転されれば、吸、排気カム１９，２０の
回転と、弁ばね２１，２２の弾発力とによりカム
フオロア１５，１６は油圧タペツト１０，１０と
の連接部を支点として上下に揺動し吸、排気弁
８，９を上下に摺動して吸、排気ポート６，７は
所定のタイミングで開閉される。 Now, due to the operation of the engine, the pair of valve train camshafts 17,
18 is rotated, the cam followers 15 and 16 swing up and down using the joints with the hydraulic tappets 10 and 10 as fulcrums due to the rotation of the intake and exhaust cams 19 and 20 and the elastic force of the valve springs 21 and 22. The intake and exhaust ports 6 and 7 are opened and closed at predetermined timing by sliding the intake and exhaust valves 8 and 9 up and down.
また機関の運転により駆動される油圧ポンプか
らの加圧油の一部はブロツク側給油路２６から主
給油路２５1を通つて第１分配油路２５2に流れ、
ここでオリフイス２８により流量を制御されたの
ち、第２分配油路２５3を通り、支持孔１３より
油圧タペツト１０，１０に給油される。油圧タペ
ツト１０，１０は、従来公知の構造を備え圧油を
うけて作動されその上端がカムフオロア１５，１
６の基端に圧接される。 Further, a part of the pressurized oil from the hydraulic pump driven by the engine operation flows from the block side oil supply passage 26 to the first distribution oil passage 25 2 through the main oil supply passage 25 1 .
After the flow rate is controlled by the orifice 28, the oil passes through the second distribution oil passage 253 and is supplied to the hydraulic tappets 10, 10 from the support hole 13. The hydraulic tappets 10, 10 have a conventionally known structure, are operated by receiving pressure oil, and have upper ends connected to cam followers 15, 1.
It is pressed against the base end of 6.
なお、上記実施例では油圧タペツト１０，１０
に給油する場合について説明したが、動弁機構の
他の給油部に本考案を実施できることは勿論であ
る。 In addition, in the above embodiment, the hydraulic tappets 10, 10
Although the case where oil is supplied to the valve train has been described, it goes without saying that the present invention can be applied to other oil supply parts of the valve mechanism.
Ｃ 考案の効果
以上の実施例により明らかなように、本考案に
よれば、シリンダヘツドには、動弁機構に給油す
るための給油通路を形成し、この給油通路の途中
に該通路を流れる油の油量を制御するためのオリ
フイスを設け、このオリフイスの一端面を前記給
油通路に形成した係止段部に係合させ、またその
他端面をヘツドボルトの外側面に対面させたの
で、シリンダブロツクとシリンダヘツドとの結着
用ヘツドボルトを利用して給油通路中のオリフイ
スの位置規制を行うことができ、該規制のための
部材を何ら必要とせず部品点数を削減して構造の
簡単化が図れるとともにオリフイスの給油通路へ
の組付けも容易になる。C. Effects of the invention As is clear from the above embodiments, according to the invention, an oil supply passage for supplying oil to the valve mechanism is formed in the cylinder head, and oil flowing through the oil supply passage is provided in the cylinder head. An orifice is provided to control the oil amount, and one end surface of this orifice is engaged with a locking step formed in the oil supply passage, and the other end surface is made to face the outer surface of the head bolt, so that the cylinder block and The position of the orifice in the oil supply passage can be controlled by using the head bolt that connects it to the cylinder head, and there is no need for any members for this regulation, reducing the number of parts and simplifying the structure. It also becomes easier to assemble the oil into the oil supply passage.
またオリフイスを動弁機構に可及的に近接して
給油通路に設けることができ機関の始動時にも適
量の圧油を素早く動弁機構に補給することができ
て動弁機構の応動性を高め常時動弁機構の的確な
作動が保障される。 In addition, the orifice can be installed in the oil supply passage as close as possible to the valve mechanism, allowing the appropriate amount of pressure oil to be quickly supplied to the valve mechanism when the engine is started, improving the responsiveness of the valve mechanism. Accurate operation of the valve mechanism is guaranteed at all times.
図面は本考案装置の一実施例を示すもので、第
１図は本考案装置を備えた内燃機関の動弁機構部
分の縦断面図、第２図は第１図−線に沿う部
分横断面図、第３図は第２図−線に沿う部分
縦断面図である。
１……シリンダブロツク、２……シリンダヘツ
ド、４……ヘツドボルト、１１……動弁機構、２
５……給油通路、２８……オリフイス、２９……
係止段部。
The drawings show an embodiment of the device according to the present invention, and FIG. 1 is a vertical cross-sectional view of a valve mechanism portion of an internal combustion engine equipped with the device according to the present invention, and FIG. 2 is a partial cross-sectional view taken along the line shown in FIG. 1. FIG. 3 is a partial vertical sectional view taken along the line of FIG. 2. 1... Cylinder block, 2... Cylinder head, 4... Head bolt, 11... Valve mechanism, 2
5... Fuel supply passage, 28... Orifice, 29...
Locking step.
Claims (1)
されるシリンダヘツドに、動弁機構を組付けてな
る内燃機関において、前記シリンダヘツドには、
前記動弁機構に給油するための給油通路を形成
し、この給油通路の途中に該通路を流れる油の流
量を制御するためのオリフイスを設け、このオリ
フイスの一端面を前記給油通路に形成した係止段
部に係合させ、またその他端面を前記ヘツドボル
トの外側面に対面させたことを特徴とする内燃機
関における動弁機構の給油装置。 In an internal combustion engine in which a valve mechanism is assembled to a cylinder head that is fastened to a cylinder block with a head bolt, the cylinder head includes:
An oil supply passage for supplying oil to the valve operating mechanism is formed, an orifice is provided in the middle of the oil supply passage for controlling the flow rate of oil flowing through the passage, and one end surface of the orifice is formed in the oil supply passage. 1. A refueling device for a valve train in an internal combustion engine, characterized in that the oil supply device is engaged with a stop portion, and the other end face faces the outer surface of the head bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6457585U JPH045687Y2 (en) | 1985-04-30 | 1985-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6457585U JPH045687Y2 (en) | 1985-04-30 | 1985-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61179312U JPS61179312U (en) | 1986-11-08 |
| JPH045687Y2 true JPH045687Y2 (en) | 1992-02-18 |
Family
ID=30595789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6457585U Expired JPH045687Y2 (en) | 1985-04-30 | 1985-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045687Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013204508A (en) * | 2012-03-28 | 2013-10-07 | Aisin Seiki Co Ltd | Branch member |
-
1985
- 1985-04-30 JP JP6457585U patent/JPH045687Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61179312U (en) | 1986-11-08 |
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