JPS603410A - Valve rocker arm chamber for diesel engine - Google Patents

Valve rocker arm chamber for diesel engine

Info

Publication number
JPS603410A
JPS603410A JP10930083A JP10930083A JPS603410A JP S603410 A JPS603410 A JP S603410A JP 10930083 A JP10930083 A JP 10930083A JP 10930083 A JP10930083 A JP 10930083A JP S603410 A JPS603410 A JP S603410A
Authority
JP
Japan
Prior art keywords
intake
valve arm
valve rocker
exhaust valve
shaft
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
JP10930083A
Other languages
Japanese (ja)
Inventor
Koichi Amemori
雨森　宏一
Toshihiko Kawabe
河辺　利彦
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.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine 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 Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP10930083A priority Critical patent/JPS603410A/en
Priority to SE8306263A priority patent/SE458048B/en
Priority to GB08331009A priority patent/GB2141780B/en
Priority to US06/553,897 priority patent/US4538561A/en
Priority to FR8318540A priority patent/FR2547627B1/fr
Priority to IT8324113A priority patent/IT1167687B/en
Priority to AU23030/84A priority patent/AU2303084A/en
Priority to IN21/MAS/84A priority patent/IN159241B/en
Priority to DE19843403663 priority patent/DE3403663A1/en
Priority to KR1019840000595A priority patent/KR920000787B1/en
Publication of JPS603410A publication Critical patent/JPS603410A/en
Priority to MYPI88000300A priority patent/MY103247A/en
Priority to HK704/88A priority patent/HK70488A/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
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE:To facilitate assembly work, by setting a cam shaft, a fuel valve rocker shaft, an intake or exhaust valve rocker shaft and members, which are driven by the former members, on a valve rocker arm chamber member before assembling them on a cylinder head. CONSTITUTION:A cam for driving a unit injector and a cam 17 for driving an intake or exhaust valve 18 are formed on an identical cam shaft 22. The unit injector is driven through a fuel valve rocker arm supported by a fuel valve rocker shaft 16. The intake or exhaust valve 18 is driven through an intake or exhaust valve rocker arm 19 supported by an intake or exhaust valve rocker shaft 20. The cam shaft 22, the fuel valve rocker shaft 16, the intake or exhaust valve rocker shaft 20, the fuel valve rocker arm and the intake or exhaust valve rocker arm 19 are set on a valve rocker arm chamber member 10 before they are mounted on a cylinder head 9. According to this constitution, the assembly work on these members is facilitated and the number of assembly steps is reduced.

Description

【発明の詳細な説明】 クタを装着したオーハーヘッドカム式ディーゼル機関の
弁腕室装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a valve arm chamber device for an Oherhead cam type diesel engine equipped with a valve arm.

■　一般に弁腕式ＯＨＣ機関に於ては、吸排気弁腕に設
けられたシュー又はローラーが直接カム面に接触するの
でカム軸と弁腕軸との平行度が一番の肝要なポイントで
あり、もしこの平行度が出ていないとシューがカム面に
片当りしその耐久性が大巾に劣化する。■ In general, in valve arm type OHC engines, the shoes or rollers provided on the intake and exhaust valve arms directly contact the cam surface, so the parallelism between the cam shaft and the valve arm axis is the most important point. If this parallelism is not achieved, the shoe will hit the cam surface unevenly and its durability will be greatly degraded.

■　一般にユニットインジェクタを採用する場合、これ
を駆動するカムは上記吸排気カム軸に併設する事が賢明
である。■ Generally, when using a unit injector, it is wise to install the cam that drives it alongside the intake/exhaust camshaft.

■　この燃料カムでユニットインジェクタを駆動するの
に揺動腕（以下燃料弁腕）を使用する場合■と同様の事
がいえる。■ The same thing as ■ applies when a swinging arm (hereinafter referred to as a fuel valve arm) is used to drive a unit injector with this fuel cam.

■　吸排気弁腕軸、カム軸受、燃料弁腕軸、を別々のも
ので支えると平行度を出すのが困難、■　と同時に組付
にも時間がかかる。■ If the intake and exhaust valve arm shafts, cam bearings, and fuel valve arm shafts are supported by separate parts, it is difficult to achieve parallelism.■ At the same time, it takes time to assemble.

■　カム軸の駆動をタイミングベルトでする場合カム軸
は油室（機関内）、タイミングベルトは外部に配置する
必要有（タイミングベルトは油にかかるとダメ）、 ■　この場合カム軸シール必要、 ■　カム軸、吸排気弁腕軸、燃料弁腕軸をシリンダヘッ
ド上部におく室（弁腕室）に同時に設けると■〜■総で
が解決する。■ If the camshaft is driven by a timing belt, the camshaft must be placed in the oil chamber (inside the engine), and the timing belt must be placed outside (the timing belt will not work if it gets wet with oil). ■ In this case, a camshaft seal is required. ■ If the camshaft, intake/exhaust valve arm shaft, and fuel valve arm shaft are installed at the same time in the chamber (valve arm chamber) located at the top of the cylinder head, problems 1 to 2 can be solved.

■　逆に■を採用するために吸排気及びユニットインジ
ェクタの駆動は弁腕軸式にする方が有利。■On the other hand, in order to adopt ■, it is advantageous to use a valve arm shaft type for the intake/exhaust and unit injector drive.

即ち、本発明のディーゼル機関の弁腕室装置は、シリン
ダヘッドに装置したユニットインジェクタ駆動用の燃料
弁腕及び吸排気弁開閉用の吸排気弁腕をそれぞれ揺動さ
せる燃料カム及び吸排気カムを同軸上に設けたカム軸を
吸排気弁の上方に配設したディーゼル機関において、上
記カム軸ならびに燃料弁腕の支持用の燃料弁腕軸及び吸
排気弁腕支持用の吸排気弁腕軸が組み込まれた弁腕室部
材をシリンダヘッドに取イ」けることにより構成される
。That is, the valve arm chamber device for a diesel engine of the present invention includes a fuel cam and an intake/exhaust cam that respectively swing the fuel valve arm for driving the unit injector and the intake/exhaust valve arm for opening/closing the intake/exhaust valves, which are installed in the cylinder head. In a diesel engine in which a coaxial camshaft is disposed above the intake and exhaust valves, the camshaft, the fuel valve arm shaft for supporting the fuel valve arm, and the intake and exhaust valve arm shaft for supporting the intake and exhaust valve arms are provided. It is constructed by attaching the assembled valve arm chamber member to the cylinder head.

以下図面を参照して本発明の一実施例を説明するが、第
１図は本発明の内燃機関のヘッド上方から見た背面図、
第２図は第１図のＡ−Ａ方向の平断面図、第３図は第１
図のＢ−Ｂ方向の平断面図である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a rear view of the internal combustion engine of the present invention seen from above the head;
Figure 2 is a plan cross-sectional view taken along the line A-A in Figure 1, and Figure 3 is a cross-sectional view of Figure 1.
It is a plane sectional view of the BB direction of a figure.

このディーゼル機関は第３図に示すごとく、シリンダヘ
ッド９に装着したユニットインジェクタ８駆動用の燃料
弁腕１２及び第２図に示すことくシリンダヘッド９に設
けられた吸排気弁１８の開閉用の吸排気弁腕１９をそれ
ぞれ揺動させる燃料カム１６及び吸排気弁カム１７を同
一軸上に設けたカム軸２２を各図に示すごとく吸排気弁
１８の上方に配設している。As shown in FIG. 3, this diesel engine has a fuel valve arm 12 for driving the unit injector 8 mounted on the cylinder head 9, and a fuel valve arm 12 for opening and closing the intake and exhaust valves 18 provided on the cylinder head 9 as shown in FIG. A camshaft 22 having a fuel cam 16 and an intake/exhaust valve cam 17 coaxially disposed on the same axis is arranged above the intake/exhaust valves 18 as shown in each figure.

更に、第１図に示すごとく、カム軸２２及び燃料弁腕１
２を支持する燃料弁腕軸１６、更には、吸排気弁腕１９
を支持する吸排気弁腕軸２０は、一体形成の弁腕室部材
１０に組みこまれており、この弁腕室部材１０は、シリ
ンダヘッド９に対して第１図に示す締付ボルト２６でカ
ム軸２２の両側を、そして端部を締付ボルト２１て取（
＝Ｊけている。Furthermore, as shown in FIG. 1, the camshaft 22 and the fuel valve arm 1
2, and furthermore, the intake and exhaust valve arms 19
The intake/exhaust valve arm shaft 20 supporting the valve arm shaft 20 is assembled into an integrally formed valve arm chamber member 10, and the valve arm chamber member 10 is attached to the cylinder head 9 with a tightening bolt 26 shown in FIG. Remove the tightening bolts 21 on both sides and ends of the camshaft 22 (
＝J is out.

上記締付ボルト２６は、カム軸２２の両側及び中央部を
回転自在に支持する第１図にてその２個のみを示してい
る軸受１１のまわりを締付けて最も大きな力を受けるカ
ム軸２２をその両側からおさえると共に、燃料弁腕軸１
６、吸排気弁腕軸２０をおさえなから、その回り止めの
機能をも有しており、また以上の構成からなる本発明の
弁腕室装置では、その弁腕室部材１０にカム軸２２、吸
排気弁腕軸２０及び燃料弁腕軸１６があらかじめ組み込
まれたプリセットの状態で、シリンダヘッド９に組みイ
」け可能てあり、弁腕室及びその（＝Ｊ属品の組付けが
容易であり、しかもコンノククトに形成される。又第１
図１００のオイルシールは弁ＩＦｉＪ室に組込まれこの
室のオイルのシールをしているか弁腕室にカム軸をつけ
ているから（カム軸受を別に持っていないから）これが
簡単にできる。The tightening bolt 26 is tightened around the bearing 11, only two of which are shown in FIG. While holding it from both sides, the fuel valve arm shaft 1
6. Since the intake/exhaust valve arm shaft 20 is not held down, it also has the function of preventing its rotation, and in the valve arm chamber device of the present invention having the above configuration, the cam shaft 22 is attached to the valve arm chamber member 10. , the intake/exhaust valve arm shaft 20 and the fuel valve arm shaft 16 can be assembled into the cylinder head 9 in a preset state, making it easy to assemble the valve arm chamber and its accessories. Moreover, it is formed into a connoct.
The oil seal in Figure 100 is built into the valve IFiJ chamber and seals the oil in this chamber, or a camshaft is attached to the valve arm chamber (because there is no separate cam bearing), making this easy.

また、これらの３個の各軸が単体の弁腕室部材１０に組
込まれているので、各軸間の平行度が充分保証されるた
め、吸排気弁腕１９の吸排気弁カム１７と当接するシュ
一部材及び燃料弁腕１２の燃料カム１６と当接するロー
ラ部材などが片当りして摩耗することがなくなる。Furthermore, since each of these three axes is incorporated into a single valve arm chamber member 10, the parallelism between each axis is sufficiently guaranteed, so that the intake and exhaust valve cam 17 of the intake and exhaust valve arm 19 and the corresponding The shoe member in contact with the fuel valve arm 12 and the roller member in contact with the fuel cam 16 of the fuel valve arm 12 are prevented from being worn out due to uneven contact.

なお、本実施例においては、第２図に示すごとく、上記
の弁腕室部材１０にデコンプ軸２６が取付けられており
、更には、第１図のカム軸２２端部に潤滑油ポンプ１５
も取伺けられており、これらの部品も全て弁腕室部材１
０にプリセットした状態で弁腕室部材１０をシリンダヘ
ッド９に組付は可能となる。In this embodiment, as shown in FIG. 2, a decompression shaft 26 is attached to the valve arm chamber member 10, and a lubricating oil pump 15 is also attached to the end of the camshaft 22 in FIG.
were also obtained, and all of these parts are part of the valve arm chamber member 1.
It becomes possible to assemble the valve arm chamber member 10 to the cylinder head 9 in a state where the valve arm chamber member 10 is preset to 0.

従って、本発明の弁腕室装置を適用したディーゼル機関
では、その機関をコンパクトに形成すると共に、そのカ
ム軸、燃料弁腕軸及び吸排気弁腕、それらにより駆動さ
れる部品あるいはこれらと関連する部品などを単体の弁
腕室部材にプリセットした状態でシリンダヘッドに組イ
」けることができるので、組ｆ］け作業を容易にし、そ
の組利は工数の低減をはかりつると共に、それら各軸間
の平行度等の寸法精度を充分確保できるという利点があ
る。Therefore, in a diesel engine to which the valve arm chamber device of the present invention is applied, the engine can be made compact, and the camshaft, fuel valve arm shaft, intake and exhaust valve arms, parts driven by them, or related to these can be made compact. Since parts can be preset into a single valve arm chamber member and then assembled into the cylinder head, assembly work is facilitated, reducing man-hours and making it possible to assemble the parts into the cylinder head. This has the advantage of ensuring sufficient dimensional accuracy such as parallelism between the two.

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

第１図は本発明の内燃機関を後方から見た拡大背面図、
第２図は第１図のＡ−Ａ方向の平断面図、第３図は第１
図のＢ−Ｂ方向の平断面図である。 ８・・ユニットインジェクタ、９・・シＩＪンタ゛ヘッ
ド、１０・・・弁腕室部材。 代理人　弁理士　小　川　信　− 弁理士　野　口　賢　照 弁理士　斎下和彦FIG. 1 is an enlarged rear view of the internal combustion engine of the present invention as seen from the rear;
Figure 2 is a plan cross-sectional view taken along the line A-A in Figure 1, and Figure 3 is a cross-sectional view of Figure 1.
It is a plane sectional view of the BB direction of a figure. 8. Unit injector, 9. IJ injector head, 10. Valve arm chamber member. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita

Claims (1)

【特許請求の範囲】[Claims] シリンダヘッドに装着したユニットインジェクタ駆動用
の燃料弁腕及び吸排気弁開閉用の吸排気弁腕をそれぞれ
揺動させる燃料カム及び吸排気弁カムを同軸上に設けた
カム軸を吸排気弁の上方に配設したテイーゼル機関にお
いて、上記カム軸ならびに燃料弁腕支持用の燃料弁腕軸
及び吸排気弁腕支持用の吸排気弁腕軸が組み込まれた弁
腕室部４１をシリンダヘッドに取付けたことを特徴とす
るテイーゼル機関の弁腕室装置。A camshaft with a fuel cam and an intake/exhaust valve cam coaxially mounted above the intake/exhaust valve to swing the fuel valve arm for driving the unit injector attached to the cylinder head and the intake/exhaust valve arm for opening/closing the intake/exhaust valves, respectively. In the tasel engine installed in the cylinder head, the valve arm chamber 41 in which the camshaft, the fuel valve arm shaft for supporting the fuel valve arm, and the intake and exhaust valve arm shaft for supporting the intake and exhaust valve arms are incorporated is attached to the cylinder head. A valve arm chamber device for a tasel engine, characterized by:
JP10930083A 1983-06-20 1983-06-20 Valve rocker arm chamber for diesel engine Pending JPS603410A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP10930083A JPS603410A (en) 1983-06-20 1983-06-20 Valve rocker arm chamber for diesel engine
SE8306263A SE458048B (en) 1983-06-20 1983-11-15 VIP-PARK CHAMBER DEVICE IN A DIESEL ENGINE
GB08331009A GB2141780B (en) 1983-06-20 1983-11-21 Mounting the camshaft and rocker shafts in a diesel engine
US06/553,897 US4538561A (en) 1983-06-20 1983-11-21 Valve arm chamber apparatus for diesel engine
FR8318540A FR2547627B1 (en) 1983-06-20 1983-11-22
IT8324113A IT1167687B (en) 1983-06-20 1983-12-12 CHAMBER APPARATUS FOR VALVE ARMS FOR DIESEL ENGINE
AU23030/84A AU2303084A (en) 1983-06-20 1984-01-03 Overhead camshaft apparatus
IN21/MAS/84A IN159241B (en) 1983-06-20 1984-01-13
DE19843403663 DE3403663A1 (en) 1983-06-20 1984-02-03 DEVICE WITH VALVE ARM CHAMBER FOR DIESEL ENGINES
KR1019840000595A KR920000787B1 (en) 1983-06-20 1984-02-08 Valve arm chamber apparatus for diesel engine
MYPI88000300A MY103247A (en) 1983-06-20 1988-03-23 Valve arm chamber apparatus for a diesel engine
HK704/88A HK70488A (en) 1983-06-20 1988-09-08 Valve arm chamber apparatus for a diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10930083A JPS603410A (en) 1983-06-20 1983-06-20 Valve rocker arm chamber for diesel engine

Publications (1)

Publication Number Publication Date
JPS603410A true JPS603410A (en) 1985-01-09

Family

ID=14506688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10930083A Pending JPS603410A (en) 1983-06-20 1983-06-20 Valve rocker arm chamber for diesel engine

Country Status (1)

Country Link
JP (1) JPS603410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04121525A (en) * 1989-12-28 1992-04-22 Gold Star Co Ltd Method of controlling time display of electronic range

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961512A (en) * 1972-05-05 1974-06-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961512A (en) * 1972-05-05 1974-06-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04121525A (en) * 1989-12-28 1992-04-22 Gold Star Co Ltd Method of controlling time display of electronic range

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