JPS6367003B2 - - Google Patents
Info
- Publication number
- JPS6367003B2 JPS6367003B2 JP57139125A JP13912582A JPS6367003B2 JP S6367003 B2 JPS6367003 B2 JP S6367003B2 JP 57139125 A JP57139125 A JP 57139125A JP 13912582 A JP13912582 A JP 13912582A JP S6367003 B2 JPS6367003 B2 JP S6367003B2
- Authority
- JP
- Japan
- Prior art keywords
- rocker arm
- sub
- valve
- arm shaft
- valve stem
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/262—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with valve stems disposed radially from a centre which is substantially the centre of curvature of the upper wall surface of a 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
- 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
- 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
- F02F2001/246—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis and orientated radially from the combustion chamber surface
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)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 本発明は内燃機関の動弁装置に関する。[Detailed description of the invention] The present invention relates to a valve train for an internal combustion engine.
一般に燃焼室に放射状に配設されるバルブステ
ムの複数をカムシヤフトで駆動する動弁装置にお
いては、ロツカーアームの押圧方向とバルブステ
ムの軸芯方向とが一致しにくゝ、このためロツカ
ーアームとバルブステムとの間にサブロツカーア
ームを介在させ、これによりバルブステムを軸芯
方向に押圧している。 In general, in a valve train in which a camshaft drives a plurality of valve stems arranged radially in a combustion chamber, it is difficult for the pressing direction of the rocker arm to match the axial direction of the valve stem. A sub-rocker arm is interposed between the valve stem and the valve stem, thereby pressing the valve stem in the axial direction.
本発明はかゝるものにおいてロツカーアームが
どの方向からサブロツカーアームを押してもサブ
ロツカーアームは常にバルブステムの軸方向方に
押圧できるようにした装置を得ることを目的とし
たもので吸気弁の２個と排気弁の２個との各バル
ブステムを燃焼室に放射状に配設し、該バルブス
テムをロツカーアームシヤフトに軸支されるロツ
カーアームと、サブロツカーアームシヤフトに軸
支されるサブロツカーアームとを介してシリンダ
ヘツド中央の１本のカムシヤフトに連動させた内
燃機関の動弁装置において、前記サブロツカーア
ームシヤフトを、前記ロツカーアームシヤフトに
直交して前記吸気弁間に配設した吸気弁用の１対
と、前記ロツカーアームシヤフトに平行して前記
排気弁間に位置する点火プラグに対峙して配設し
た排気弁用の１対とに分割すると共に、各サブロ
ツカーアームシヤフトを前記バルブステムと直交
する面に平行に且つ前記サブロツカーアームの揺
動範囲において前記バルブステムと直交するよう
に配設したことを特徴とする。 The present invention aims to provide a device in which the sub-rocker arm can always press in the axial direction of the valve stem no matter which direction the rocker arm pushes the sub-rocker arm. Two valve stems, an exhaust valve and an exhaust valve, are arranged radially in the combustion chamber, and the valve stems are rotatably supported by a rocker arm shaft, and a sub rocker arm is pivotally supported by a sub rocker arm shaft. In the valve operating system for an internal combustion engine, the sub-rocker arm shaft is interlocked with a single camshaft at the center of the cylinder head via the intake valve, and the sub-rocker arm shaft is disposed between the intake valves at right angles to the rocker arm shaft. one pair for exhaust valves, and one pair for exhaust valves disposed parallel to the rocker arm shaft and facing the spark plugs located between the exhaust valves, and each sub rocker armshaft It is characterized in that it is disposed parallel to a plane perpendicular to the valve stem and perpendicular to the valve stem in the swinging range of the sub-rocker arm.
これを図示実施例について説明すると１はシリ
ンダブロツク、２はシリンダヘツド、３はヘツド
カバーを示し、そのシリンダヘツド２には、その
下面の燃焼室壁に吸気弁４の２個と排気弁５の２
個とを備え、これら各弁のバルブステム４ａ，５
ａはヘツド２内を放射状に貫通してばね６により
弾持されると共にこれら各バルブステム４ａ，５
ａ間に位置してカムシヤフト７を支承し、又その
ヘツドカバー３にはロツカーアーム８を軸支する
ロツカーアームシヤフト９と、サブロツカーアー
ム１０を軸支するサブロツカーアームシヤフト１
１とが支承され該ロツカーアームシヤフト９は前
記カムシヤフト７と平行に１対設けられると共に
該サブロツカーアームシヤフト１１は、前記ロツ
カーアームシヤフト９に直交して前記吸気弁４，
４間に配設した吸気弁用の１対と、前記ロツカー
アームシヤフト９に平行して、前記排気弁５，５
間に位置する点火プラグ１２に対峙して配設した
排気弁用の１対とに分割して設けられ、而もこれ
らシヤフト１１は前記バルブステム４ａ，５ａと
直交する面に平行に且つ該サブロツカーアーム１
０の揺動範囲において各バルブステム４ａ，５ａ
と直交するように配設されている。 To explain this with respect to the illustrated embodiment, 1 is a cylinder block, 2 is a cylinder head, and 3 is a head cover.The cylinder head 2 has two intake valves 4 and two exhaust valves 5 on the combustion chamber wall on the lower surface thereof.
valve stems 4a, 5 of each of these valves.
a extends radially through the inside of the head 2 and is supported by a spring 6, and each valve stem 4a, 5
A and a rocker arm shaft 9 which pivotally supports a rocker arm 8, and a sub rocker arm shaft 1 which pivotally supports a sub rocker arm 10, are located between the rocker arm shaft 9 and a rocker arm shaft 9 which pivotally supports a rocker arm 8 on the head cover 3.
A pair of rocker arm shafts 9 are provided parallel to the camshaft 7, and the sub rocker arm shaft 11 is orthogonal to the rocker arm shaft 9 and supports the intake valves 4,
A pair of intake valves disposed between the two, and a pair of exhaust valves 5, 5 parallel to the rocker arm shaft 9.
The shafts 11 are arranged in parallel with a plane perpendicular to the valve stems 4a, 5a and in the sub-probe. Tsuka arm 1
In the swing range of 0, each valve stem 4a, 5a
It is arranged perpendicular to the
このように本発明によるときはシリンダヘツド
中央の１本のカムシヤフト７に連動するサブロツ
カーアーム１０を軸支するサブロツカーアームシ
ヤフト１１はこれをロツカーアームシヤフト９に
直交して吸気弁４，４間に配設した吸気弁用の１
対と、ロツカーアームシヤフト９に平行して排気
弁５，５間に位置する点火プラグ１２に対峙して
配設した排気弁用の１対とに分割したものである
から、排気弁用のサブロツカーアームシヤフト１
１は特にシリンダヘツドの中央を離れて排気弁
５，５間に位置する点火プラグ１２廻りを大きく
開口して配設されるためプラグ１２のメンテナン
スを良好にすることができ而もこれら各サブロツ
カーアームシヤフト１１はバルブステム４ａ，５
ａと直交する面に平行に且つサブロツカーアーム
１０の揺動範囲においてバルブステム４ａ，５ａ
と直交するように配設したものであるからロツカ
ーアーム８がどの方向からサブロツカーアーム１
０を押圧しても、該サブロツカーアーム１０は常
に各吸排弁４，５のバルブステム４ａ，５ａを軸
芯方向に押圧するので、バルブの耐久性が向上す
る等の効果を有する。 In this way, according to the present invention, the sub-rocker arm shaft 11 which pivotally supports the sub-rocker arm 10 which is interlocked with one camshaft 7 at the center of the cylinder head is connected orthogonally to the rocker arm shaft 9 to connect the intake valves 4 and 4. 1 for the intake valve placed between
Since it is divided into a pair for the exhaust valve and a pair for the exhaust valve disposed parallel to the Rotsuker arm shaft 9 and facing the spark plug 12 located between the exhaust valves 5, 5. Subrock car armshaft 1
1 is disposed with a large opening around the spark plug 12 located between the exhaust valves 5 and 5 away from the center of the cylinder head, making maintenance of the plug 12 easy. The arm shaft 11 has valve stems 4a, 5
Valve stems 4a, 5a in the swing range of the sub-rocker arm 10 and parallel to the plane orthogonal to a.
Since the rocker arm 8 is arranged perpendicular to the sub rocker arm 1,
0, the sub-rocker arm 10 always presses the valve stems 4a, 5a of the intake/exhaust valves 4, 5 in the axial direction, which has the effect of improving the durability of the valves.
図面は本発明の一実施例を示すもので第１図は
一部欠截縦断面図、第２図は要部の平面図であ
る。
２…シリンダヘツド、４ａ，５ａ…バルブステ
ム、７…カムシヤフト、８…ロツカーアーム、９
…ロツカーアームシヤフト、１０…サブロツカー
アーム、１１…サブロツカーアームシヤフト。
The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway vertical sectional view, and FIG. 2 is a plan view of the main part. 2... Cylinder head, 4a, 5a... Valve stem, 7... Camshaft, 8... Rocker arm, 9
...Rotscar armshaft, 10...Subrotscar arm, 11...Subrotscar armshaft.
Claims (1)
テムを燃焼室に放射状に配設し、該バルブステム
をロツカーアームシヤフトに軸支されるロツカー
アームと、サブロツカーアームシヤフトに軸支さ
れるサブロツカーアームとを介してシリンダヘツ
ド中央の１本のカムシヤフトに連動させた内燃機
関の動弁装置において、前記サブロツカーアーム
シヤフトを、前記ロツカーアームシヤフトに直交
して前記吸気弁間に配設した吸気弁用の１対と、
前記ロツカーアームシヤフトに平行して前記排気
弁間に位置する点火プラグに対峙して配設した排
気弁用の１対とに分割すると共に、各サブロツカ
ーアームシヤフトを前記バルブステムと直交する
面に平行に且つ前記サブロツカーアームの揺動範
囲において前記バルブステムと直交するように配
設したことを特徴とする内燃機関の動弁装置。1 The valve stems of two intake valves and two exhaust valves are arranged radially in the combustion chamber, and the valve stems are pivotally supported by a Rocker arm that is supported by a Rocker arm shaft and a sub Rocker arm shaft. In a valve operating system for an internal combustion engine, the sub-rocker arm shaft is interlocked with a single camshaft at the center of the cylinder head via a sub-rocker arm, which is connected between the intake valves and perpendicularly to the rocker arm shaft. One pair for the installed intake valve,
A pair of exhaust valves are disposed parallel to the Rocker arm shaft and facing the spark plugs located between the exhaust valves, and each sub Rocker arm shaft is arranged in a plane orthogonal to the valve stem. A valve operating system for an internal combustion engine, characterized in that the sub-rocker arm is disposed parallel to the valve stem and perpendicular to the valve stem in a swing range of the sub-rocker arm.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13912582A JPS5929710A (en) | 1982-08-12 | 1982-08-12 | Tappet valve mechanism of internal combustion engine |
| AU16873/83A AU545712B2 (en) | 1982-07-23 | 1983-07-15 | I.c. engine valve actuating apparatus |
| GB08319455A GB2124301B (en) | 1982-07-23 | 1983-07-19 | Internal combustion engine valve actuating mechanism |
| US06/516,368 US4558667A (en) | 1982-07-23 | 1983-07-22 | Valve driving apparatus for an internal combustion engine |
| FR8312180A FR2530727B1 (en) | 1982-07-23 | 1983-07-22 | DEVICE FOR CONTROLLING VALVES IN AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13912582A JPS5929710A (en) | 1982-08-12 | 1982-08-12 | Tappet valve mechanism of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5929710A JPS5929710A (en) | 1984-02-17 |
| JPS6367003B2 true JPS6367003B2 (en) | 1988-12-22 |
Family
ID=15238089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13912582A Granted JPS5929710A (en) | 1982-07-23 | 1982-08-12 | Tappet valve mechanism of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5929710A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61275545A (en) * | 1985-05-29 | 1986-12-05 | Daihatsu Motor Co Ltd | Tappet valve device in internal combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2076442A5 (en) * | 1970-01-15 | 1971-10-15 | Gordini Automobiles |
-
1982
- 1982-08-12 JP JP13912582A patent/JPS5929710A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5929710A (en) | 1984-02-17 |
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