JPS63205409A - Internal combustion engine - Google Patents

Internal combustion engine

Info

Publication number
JPS63205409A
JPS63205409A JP29165387A JP29165387A JPS63205409A JP S63205409 A JPS63205409 A JP S63205409A JP 29165387 A JP29165387 A JP 29165387A JP 29165387 A JP29165387 A JP 29165387A JP S63205409 A JPS63205409 A JP S63205409A
Authority
JP
Japan
Prior art keywords
rocker arm
intake
exhaust
valve
internal combustion
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
Application number
JP29165387A
Other languages
Japanese (ja)
Inventor
ゲルハルト・ファイヒチンガ
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.)
AVL List GmbH
Original Assignee
AVL List GmbH
AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH
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 AVL List GmbH, AVL Gesellschaft fuer Verbrennungskraftmaschinen und Messtechnik mbH filed Critical AVL List GmbH
Publication of JPS63205409A publication Critical patent/JPS63205409A/en
Pending 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
    • 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
    • F01L1/267—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 means for varying the timing or the lift of the valves
    • 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
    • F02B2275/20—SOHC [Single 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 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
    • 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)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、１つのシリンダにつき２つの並設されている
吸気弁及び前記吸気弁に対向配設されている１つの排気
弁と、前記両吸気弁と排気弁に対して等しい間隔を開け
ているカム軸が備えられると共に、前記カム軸に平行に
延設され、前記弁を操作するロッカ腕を設けているロッ
カ腕軸が備えられ、その際カムタペットと一方の吸気ロ
ッカ腕の調整機構との及び排気ロッカ腕の調整機構との
間を結ぶ接続線がロッカ腕の回転軸に関して同じ角度だ
け同じ向きに変位している内燃機関に関する。Detailed Description of the Invention [Industrial Application Field] The present invention provides two intake valves arranged in parallel per cylinder, one exhaust valve arranged opposite to the intake valve, and A camshaft is provided which is equally spaced from the intake valve and the exhaust valve, and a rocker arm shaft is provided that extends parallel to the camshaft and is provided with a rocker arm for operating the valve. The present invention relates to an internal combustion engine in which the connecting lines connecting the cam tappet and the adjustment mechanism of one intake rocker arm and the adjustment mechanism of the exhaust rocker arm are displaced in the same direction by the same angle with respect to the rotation axis of the rocker arm.

［従来の技術］ ２つの吸気弁と１つの排気弁の制御のための弁操作機構
を備えた上記の種類の内燃機関は、西ドイツ公開公報Ｄ
Ｅ−Ｏ８３３４２１１５号から知られている。両吸気弁
と排気弁との間に一本のカム軸が配設されており、この
カム軸は吸気弁及び排気弁から同じだけの距離を設けて
いる。弁を操作するカムは、カム軸上に設けられており
、そのカムは、吸気弁や排気弁の軸端に２つの吸気ロッ
カ腕と１つの排気ロッカ腕によって連動されている。ロ
ッカ腕はロッカ腕軸に揺動可能に設けられている。吸気
ロッカ腕の１つと排気ロッカ腕は同一寸法で形成されて
おり、このことによりこれらのロッカ腕は互いに交換可
能である。[Prior Art] An internal combustion engine of the above type with a valve operating mechanism for the control of two intake valves and one exhaust valve is described in West German Publication No. D
It is known from E-O83342115. A camshaft is disposed between both intake and exhaust valves, and this camshaft is spaced the same distance from the intake and exhaust valves. A cam for operating the valve is mounted on a camshaft, and the cam is linked to the shaft ends of the intake and exhaust valves by two intake rocker arms and one exhaust rocker arm. The rocker arm is swingably provided on the rocker arm shaft. One of the intake rocker arms and the exhaust rocker arm are designed with the same dimensions, so that they can be exchanged with each other.

［発明が解決すべき問題点］ この内燃機関おいて、一対の吸気ロッカ腕は左向きロッ
カ腕と右向きロッカ腕から成り、つまりこれらは、カム
タペット中心から調整ネジへの接続線はロッカ腕の回転
軸に関して左方向に変位しているものと右方向に変位し
ているものである。排気ロッカ腕は左向き又は右向き吸
気ロッカ腕のどちらか一方とは交換不能である。[Problems to be Solved by the Invention] In this internal combustion engine, the pair of intake rocker arms consists of a left-facing rocker arm and a right-facing rocker arm, that is, the connection line from the center of the cam tappet to the adjustment screw is connected to the rotation axis of the rocker arm. One is displaced to the left with respect to the other, and the other is displaced to the right. The exhaust rocker arm is not interchangeable with either the left- or right-facing intake rocker arm.

４気筒エンジンでは６個の右向きロッカ腕と６個の左向
きロッカ腕が備えられ、このことは異なる部品の数とい
う点で欠点を生じ、特に加工や部品在庫の点でその欠点
は深刻となる。In a four-cylinder engine, six right-facing rocker arms and six left-facing rocker arms are provided, which creates a disadvantage in terms of the number of different parts, which is especially serious in terms of processing and parts inventory.

さらには、この内燃機関ではシリンダ同志で点火プラグ
と排気弁の位置が異なっており、つまりシリンダ２とシ
リンダ３の間の断面に関してこれらは対称であり、この
ことはシリンダヘッドの製造組み立てにおいて付加的な
困難を生じさせることになる。Furthermore, in this internal combustion engine, the positions of the spark plug and exhaust valve are different between the cylinders, i.e. they are symmetrical with respect to the cross section between cylinders 2 and 3, which makes an additional difference in the manufacturing assembly of the cylinder head. This will cause great difficulties.

本発明の課題は、１シリンダ当たり３つの弁を備えた内
燃機関において上記欠点を解消し、特にその弁操作機構
が簡単に製造組み立てでき、しかも異なる部品の点数が
少なくされたものを提供することである。An object of the present invention is to solve the above-mentioned drawbacks in an internal combustion engine having three valves per cylinder, and in particular to provide an engine whose valve operation mechanism can be manufactured and assembled easily and has a reduced number of different parts. It is.

［問題点を解決するための手段］ 上記問題点を解決し、上記課題を達成するため、本発明
による内燃機関では、前記カムタペットと他方の吸気ロ
ッカ腕の調整機構との及び前記排気ロッカ腕の調整機構
との間を結ぶ接続線がそのロッカ腕の回動軸に関して同
じ角度だけ同じ向きに変位しており、前記排気弁を操作
する排気ロッカ腕は前記排気弁に対向配設されている吸
気弁を操作する吸気ロッカ腕とカム軸軸受部との間に配
設されている。[Means for Solving the Problems] In order to solve the above problems and achieve the above objects, in the internal combustion engine according to the present invention, the adjustment mechanism of the cam tappet and the other intake rocker arm and the adjustment mechanism of the exhaust rocker arm are provided. A connection line connecting the adjustment mechanism is displaced in the same direction by the same angle with respect to the rotation axis of the rocker arm, and the exhaust rocker arm that operates the exhaust valve is connected to the intake valve disposed opposite to the exhaust valve. It is disposed between the intake rocker arm that operates the valve and the camshaft bearing.

［作用・効果］ この構成により、吸気弁に対向配設されている排気弁は
吸気カムの間に位置している排気カムによって操作され
るのではなく、カム軸軸受部の近くで両吸気カムに並設
している排気カムによって操作される。このことにより
、シリンダヘッドに弁を最適配置した場合、ロッカ腕の
種類の数は１つだけとなり、例えば４気筒エンジンでは
、例えば１２個の左向きロッカ腕が使用され、これらの
ロッカ腕は全ての寸法が同一となっており、その結果完
全に互換可能となっている。ただ１つの形態で製作すれ
ばよいという生産の簡略化と共に、又それにともなって
在庫管理も簡単となりその経費も低下する。[Function/Effect] With this configuration, the exhaust valve disposed opposite to the intake valve is not operated by the exhaust cam located between the intake cams, but is operated by both intake cams near the camshaft bearing. It is operated by an exhaust cam installed in parallel with the exhaust cam. This results in an optimal arrangement of the valves in the cylinder head with only one type of rocker arm; in a four-cylinder engine, for example, twelve left-facing rocker arms are used; The dimensions are the same, making them completely interchangeable. Along with the simplification of production as only one form is required, inventory management is also simplified and costs are reduced accordingly.

本発明によるさらに進んだ特徴により、吸気弁と排気弁
と点火プラグが多気筒内燃機関の全てのシリンダにおい
て同一に配設されるなら、より利点が得られる。ただ一
種類の同一形状のロッカ腕の使用と共にこの構成により
シリンダヘッドの製造が簡単化され、例えばＶ型エンジ
ンの場合シリンダヘッドは１８０°回転させて全く同一
に形成されることができ、その排気路はエンジンブロッ
クの外側にそれぞれ配設される。According to a further feature according to the invention, further advantages are obtained if the intake valve, exhaust valve and spark plug are arranged identically in all cylinders of a multi-cylinder internal combustion engine. This arrangement, together with the use of only one rocker arm of the same shape, simplifies the manufacture of the cylinder head; for example, in the case of a V engine, the cylinder head can be rotated 180° and formed identically, and its exhaust gas The channels are respectively arranged on the outside of the engine block.

さらに本発明によれば、特に列型内燃機関において吸気
弁と排気弁と点火プラグの配列を２つのシリンダの間隔
の変位に対して一定にすることが可能である。このこと
によって、列型内燃機関のこのように形成されたシリン
ダヘッドに対する全ての穴加工等の加工作業がシリンダ
間隔だけ送ることで全く同一に行なっていくことができ
る。Furthermore, according to the invention, it is possible to make the arrangement of the intake valve, exhaust valve and spark plug constant with respect to the displacement of the spacing between two cylinders, especially in an in-line internal combustion engine. As a result, all the machining operations such as hole machining for the thus formed cylinder head of the in-line internal combustion engine can be carried out in exactly the same way by moving the cylinders apart by the distance between the cylinders.

又必要かもしれないピストン凹部や弁開部も完全に同一
に形成することができるのでピストン表面の加工におい
ても利点を生じるし、特に列型内燃機関の場合全てのピ
ストンはシリンダブロック内で同じように方向づけられ
て組み立てられ、このことはピストンの装着作業を簡単
にする。It is also advantageous in the machining of the piston surface, since any piston recesses or valve openings that may be necessary can be made completely identical, and especially in the case of in-line internal combustion engines, all pistons are made identically in the cylinder block. This simplifies the installation of the piston.

３気筒や５気筒列型内燃機関では、従来の内燃機関のよ
うに、もちろんこの機関でも横断面に関して対称となる
ことは不可能であるが、右向きないしは左向きロッカ腕
の数が異なるという問題は生じない。In a 3-cylinder or 5-cylinder in-line internal combustion engine, it is of course impossible for this engine to be symmetrical in cross section, as in conventional internal combustion engines, but the problem of different numbers of right-facing or left-facing rocker arms does arise. do not have.

［実施例」 本発明の実施例として列型内燃機関を用いて詳しく説明
する。[Example] As an example of the present invention, an in-line internal combustion engine will be described in detail.

第１図には、本発明による内燃機関のシリンダヘッド１
のところのみが主に図示されており、このシリンダヘッ
ド１は封密部材２を介在させてシリンダブロック３上に
固定されている。こ　　　　！の列型内燃機関の各シリ
ンダ４には各吸気口５．５′を開閉する２つの吸気弁６
と排気ロアを開閉する排気弁８が設けられている。シリ
ンダヘッド１内に配設されている燃焼室１２に開口して
いる両吸気口５と５′は、シリンダ軸９を含むと共にカ
ム軸１０に平行に延設されている面１１の片側に配置さ
れている。前記面１１の反対側には排気ロアが燃焼室１
２に開口しており、そのそばに点火プラグ１３が配設さ
れている。FIG. 1 shows a cylinder head 1 of an internal combustion engine according to the invention.
The cylinder head 1 is fixed on a cylinder block 3 with a sealing member 2 interposed therebetween. child ! Each cylinder 4 of the in-line internal combustion engine has two intake valves 6 for opening and closing each intake port 5 and 5'.
An exhaust valve 8 for opening and closing the exhaust lower is provided. Both intake ports 5 and 5', which open into a combustion chamber 12 arranged in the cylinder head 1, are arranged on one side of a surface 11 that includes the cylinder shaft 9 and extends parallel to the camshaft 10. has been done. On the opposite side of the surface 11, an exhaust lower is connected to the combustion chamber 1.
2, and a spark plug 13 is disposed near it.

カム軸１０は前記面１１に対して偏心配置されており、
このことによって燃焼室１２の形状を制限する因子がな
くなる。The camshaft 10 is arranged eccentrically with respect to the surface 11,
This eliminates any limiting factors in the shape of the combustion chamber 12.

吸気弁と排気弁との間に位置しているカム軸１０に平行
に、このカム軸１０に等距離でシリンダヘッド１に配設
されている２本のロッカ腕軸１４と１５が設けられてお
り、このロッカ腕軸の一方１４に２つの吸気ロッカ腕１
６と１６′が軸受部２８により揺動可能に支承されてい
る。Parallel to a camshaft 10 located between the intake valve and the exhaust valve, two rocker arm shafts 14 and 15 are provided, which are arranged equidistantly from this camshaft 10 in the cylinder head 1. There are two intake rocker arms 1 on one side 14 of this rocker arm shaft.
6 and 16' are swingably supported by a bearing portion 28.

他方のロッカ腕軸１５には全く同様に支承された排気ロ
ッカ腕１７がある。On the other rocker arm shaft 15 there is an exhaust rocker arm 17 which is mounted in exactly the same way.

全てのロッカ腕は同じように構成されており、吸気弁又
は排気弁側のその一方の外端部には弁の軸端部１８と相
互作用する調整機構１９が、そしてその他方の外端部に
は対応するカム、つまり吸気カム２０．２０′ないしは
排気カム２１と係合するカムタペット２２が備えられて
いる。調整機構１９は、調整ネジ及び自動油圧弁機構か
ら構成されている。All rocker arms are constructed in the same way, with an adjustment mechanism 19 at one outer end thereof on the intake or exhaust valve side, which interacts with the shank end 18 of the valve, and an adjustment mechanism 19 at the other outer end. is provided with a cam tappet 22 which engages with a corresponding cam, that is to say the intake cam 20, 20' or the exhaust cam 21. The adjustment mechanism 19 is composed of an adjustment screw and an automatic hydraulic valve mechanism.

１つのシリ、ンダ領域のみを図示している第２図から、
カムタペット２２とそれぞれのロッカ腕の調整機構１９
との間を結ぶ接続線２３がロッカ腕１４ないしは１５の
回転軸２４ないしは２５に対し同じ角度αだけ同じ向き
に変位、つまり斜めになっていることがよく理解できる
。From Figure 2, which shows only one cylinder area,
Cam tappet 22 and adjustment mechanism 19 for each rocker arm
It can be clearly seen that the connecting line 23 connecting the two is displaced in the same direction by the same angle α with respect to the rotation axis 24 or 25 of the rocker arm 14 or 15, that is, it is oblique.

その際吸気ロッカ腕１６′のカムタペット２２はカム軸
軸受部２６のそばで第２図の上側に図示されている吸気
カム２０′に係合、すなわち接当している。この順で次
のカム２０は第２の吸気ロッカ腕１６が制御され、吸気
カム２０ともう１つのカム軸軸受２６との間に排気ロッ
カ腕１７と相互作用する排気カム２１がカム軸１０に設
けられている。全カム軸軸受部２６はネジ２７によって
シリンダヘッド１に固定されている。The cam tappet 22 of the intake rocker arm 16' engages in the vicinity of the camshaft bearing 26 on the intake cam 20' shown in the upper part of FIG. The next cam 20 in this sequence is controlled by the second intake rocker arm 16 , and the exhaust cam 21 , which interacts with the exhaust rocker arm 17 between the intake cam 20 and the other camshaft bearing 26 , is connected to the camshaft 10 . It is provided. All camshaft bearings 26 are fixed to the cylinder head 1 by screws 27.

両吸気ロッカ腕１６．１６′はロッカ腕軸１４のロッカ
腕の間に配設されている圧縮バネ２つによって所望の位
置に保持される。同じことが排気ロッカ腕に対してもロ
ッカ腕軸１５に配設された圧縮バネ３０によって行なわ
れる。The two intake rocker arms 16,16' are held in the desired position by two compression springs arranged between the rocker arms of the rocker arm shaft 14. The same thing is done for the exhaust rocker arm by means of a compression spring 30 arranged on the rocker arm shaft 15.

本発明の枠内において排気弁８と点火プラグ１３の位置
を交換することももちろん可能であり、この場合排気カ
ム２１は吸気カム２０と２０’の間にくる。全てのロッ
カ腕に互換性を持たせるには、ロッカ腕の全ての寸法及
び接続線２３と回動軸２４ないしは２５との角度αが同
じでなければならない。It is of course also possible within the scope of the invention to exchange the positions of the exhaust valve 8 and the spark plug 13, in which case the exhaust cam 21 is located between the intake cams 20 and 20'. In order for all rocker arms to be compatible, all dimensions of the rocker arms and the angle α between the connecting line 23 and the pivot axis 24 or 25 must be the same.

図面において番号３１は吸気路を、番号３２は排気路を
示している。両吸気弁６は弁バネ３３を、排気弁８は弁
バネ３４を備えており、これらの弁バネはそれぞれ弁の
軸端１８のところに設けられたバネ受は皿３５によって
支えられている。In the drawings, numeral 31 indicates an intake passage, and numeral 32 indicates an exhaust passage. The two intake valves 6 are equipped with a valve spring 33, and the exhaust valve 8 is equipped with a valve spring 34, each of which is supported by a disk 35 in a spring seat provided at the shaft end 18 of the valve.

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

図面は本発明による内燃機関の一実施例を示し、第１図
は第２図のＩ−Ｉ線に沿って部分的に切断された内燃機
関の部分断面図、第２図は第１図による内燃機関の一部
の平面図である。 （６）・・・・・・吸気弁、　　（８）・・・・・・排
気弁、（１６）、（１６’）・・・・・・吸気ロッカ腕
、（１７）・・・・・・排気ロッカ腕、　　（１つ）・
・・・・・調整機構、（２２）・・・・・・カムタペッ
ト、（２４）、（２５＞・・・・・・回動軸。The drawings show an embodiment of an internal combustion engine according to the present invention, FIG. 1 is a partial cross-sectional view of the internal combustion engine taken along line I--I in FIG. 2, and FIG. 2 is a cross-sectional view of the internal combustion engine according to FIG. 1 is a plan view of a portion of an internal combustion engine. (6)...Intake valve, (8)...Exhaust valve, (16), (16')...Intake rocker arm, (17)...・Exhaust rocker arm, (1)・
...Adjustment mechanism, (22)...Cam tappet, (24), (25>...Rotation axis.

Claims (1)

【特許請求の範囲】 １、１つのシリンダにつき２つの並設されている吸気弁
及び前記吸気弁に対向配設されている１つの排気弁と、
前記両吸気弁と排気弁に対して等しい間隔を開けている
カム軸が備えられると共に、前記カム軸に平行に延設さ
れ、前記弁を操作するロッカ腕を設けているロッカ腕軸
が備えられ、その際カムタペットと一方の吸気ロッカ腕
の調整機構との及び排気ロッカ腕の調整機構との間を結
ぶ接続線がロッカ腕の回転軸に関して同じ角度だけ同じ
向きに変位している内燃機関において、 前記カムタペット（２２）と他方の吸気ロッカ腕（１６
又は１６′）の調整機構（１９）との及び前記排気ロッ
カ腕（１７）の調整機構（１９）との間を結ぶ接続線（
２３）がそのロッカ腕の回動軸（２４、２５）に関して
同じ角度（α）だけ同じ向きに変位しており、前記排気
弁（８）を操作する排気ロッカ腕（１７）は前記排気弁
（８）に対向配設されている吸気弁（６）を操作する吸
気ロッカ腕（１６）とカム軸軸受部（２６）との間に配
設されていることを特徴とする内燃機関。 ２、前記吸気弁（６）と前記排気弁（８）と点火プラグ
（１３）が多気筒内燃機関の全てのシリンダにおいて同
一に配設されていることを特徴とする特許請求の範囲第
１項に記載の内燃機関。 ３、列型内燃機関において前記吸気弁（６）と前記排気
弁（８）と前記点火プラグ（１３）の配列が２つのシリ
ンダ（４）の間隔の変位に対して一定であることを特徴
とする特許請求の範囲第２項に記載の内燃機関。[Claims] 1. Two intake valves arranged in parallel per cylinder and one exhaust valve arranged opposite to the intake valve;
A camshaft is provided that is equally spaced from both the intake valve and the exhaust valve, and a rocker arm shaft that extends parallel to the camshaft and is provided with a rocker arm that operates the valve. , in an internal combustion engine in which the connection lines connecting the cam tappet and one of the intake rocker arm adjustment mechanisms and the exhaust rocker arm adjustment mechanism are displaced in the same direction by the same angle with respect to the rotation axis of the rocker arm, The cam tappet (22) and the other intake rocker arm (16)
or a connection line (16') connecting the adjustment mechanism (19) of the exhaust rocker arm (17) and the adjustment mechanism (19) of the exhaust rocker arm (17).
23) are displaced in the same direction by the same angle (α) with respect to the rotation axes (24, 25) of their rocker arms, and the exhaust rocker arm (17) that operates the exhaust valve (8) 8). An internal combustion engine characterized in that the engine is disposed between an intake rocker arm (16) that operates an intake valve (6) that is disposed opposite to the intake rocker arm (16) and a camshaft bearing (26). 2. Claim 1, characterized in that the intake valve (6), the exhaust valve (8), and the spark plug (13) are arranged in the same way in all cylinders of a multi-cylinder internal combustion engine. The internal combustion engine described in . 3. In the in-line internal combustion engine, the arrangement of the intake valve (6), the exhaust valve (8), and the spark plug (13) is constant with respect to displacement of the interval between the two cylinders (4). An internal combustion engine according to claim 2.
JP29165387A 1986-11-21 1987-11-18 Internal combustion engine Pending JPS63205409A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3117/86 1986-11-21
AT311786A AT404389B (en) 1986-11-21 1986-11-21 INTERNAL COMBUSTION ENGINE WITH A CAMSHAFT FOR DRIVING PER CYLINDERS TWO INJECTING INLET VALVES AND A MUTUAL EXHAUST VALVE

Publications (1)

Publication Number Publication Date
JPS63205409A true JPS63205409A (en) 1988-08-24

Family

ID=3545565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29165387A Pending JPS63205409A (en) 1986-11-21 1987-11-18 Internal combustion engine

Country Status (4)

Country Link
EP (1) EP0271475B1 (en)
JP (1) JPS63205409A (en)
AT (1) AT404389B (en)
DE (1) DE3764936D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278702U (en) * 1988-12-02 1990-06-18

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112496C1 (en) * 1991-04-17 1992-08-27 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5996405A (en) * 1982-11-24 1984-06-02 Yamaha Motor Co Ltd Overhead cam shaft type four-valve engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2048182A6 (en) * 1969-06-03 1971-03-19 Citroen Sa
DE3125077A1 (en) * 1981-06-26 1983-01-13 Bayerische Motoren Werke AG, 8000 München TWO-CYLINDER FOUR-STOCK BOXER ENGINE, ESPECIALLY DRIVE WIND AIR-COOLED FOR MOTORCYCLES
JPS5996406A (en) * 1982-11-24 1984-06-02 Honda Motor Co Ltd Valve gear in three-valve type internal-combustion engine
US4741302A (en) * 1984-12-10 1988-05-03 Mazda Motor Corporation Internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5996405A (en) * 1982-11-24 1984-06-02 Yamaha Motor Co Ltd Overhead cam shaft type four-valve engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278702U (en) * 1988-12-02 1990-06-18

Also Published As

Publication number Publication date
DE3764936D1 (en) 1990-10-18
AT404389B (en) 1998-11-25
EP0271475B1 (en) 1990-09-12
EP0271475A1 (en) 1988-06-15
ATA311786A (en) 1998-03-15

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