JPH09151720A - Lubricating system of ohc engine - Google Patents
Lubricating system of ohc engineInfo
- Publication number
- JPH09151720A JPH09151720A JP31568695A JP31568695A JPH09151720A JP H09151720 A JPH09151720 A JP H09151720A JP 31568695 A JP31568695 A JP 31568695A JP 31568695 A JP31568695 A JP 31568695A JP H09151720 A JPH09151720 A JP H09151720A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- timing
- lubrication system
- cam
- driving member
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
- F16H7/023—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
- F16H2007/026—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts running in a mist of oil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はOHCエンジンの潤
滑システムに関する。TECHNICAL FIELD The present invention relates to a lubrication system for an OHC engine.
【0002】[0002]
【従来の技術】従来、OHCエンジンのカムなどの動弁
機構を潤滑するために、オイルパンのオイルをオイルポ
ンプで汲み上げ、このオイルを動弁機構へ送給する技術
はある。オイルポンプを備えていないエンジンの場合
は、スリンガーなどでオイルを跳ね上げる手法が採られ
る。本出願人は先に特願平6−323077号で調時駆
動部材をオイルのキャリアとした技術を提案した。この
技術を次図で説明する。2. Description of the Related Art Conventionally, in order to lubricate a valve operating mechanism such as a cam of an OHC engine, there is a technique in which oil in an oil pan is pumped up by an oil pump and is fed to the valve operating mechanism. In the case of an engine that does not have an oil pump, a method of splashing oil with a slinger is used. The present applicant has previously proposed a technique in Japanese Patent Application No. 6-323077 in which an oil carrier is used as a timing drive member. This technique will be described with reference to the following drawings.
【0003】図6は調時駆動部材をオイルのキャリアと
した従来のOHCエンジンの断面図である。エンジン1
00は、クランクケース101,101aに取付けたク
ランクシャフト102と、このクランクシャフト102
の駆動歯車103により被動歯車104を介して駆動さ
れるガバナ105と、クランクシャフト102に取付け
た調時駆動コグプーリ106と、この調時駆動コグプー
リ106に掛けられた調時コグベルト107と、この調
時コグベルト107で駆動される調時被動コグプーリ1
08と、この調時被動コグプーリ108と一体に回転す
る動弁カム109と、これらの調時被動コグプーリ10
8及び動弁カム109の軸となるカム軸111と、動弁
カム109と摺接して揺動するアーム112と、このア
ーム112に取付けたロックナット113及びアジャス
トスクリュウ114と、このアジャストスクリュウ11
4先端に当接し開閉する排気バルブ115とを備える。
なお、116はバルブガイド、117はコイルばね、1
18はリテーナ、121はヘッドカバー、122はスパ
ークプラグである。FIG. 6 is a sectional view of a conventional OHC engine in which the timing drive member uses an oil carrier. Engine 1
00 is a crankshaft 102 attached to the crankcases 101 and 101a, and the crankshaft 102
Governor 105 driven by driven gear 104 via driven gear 104, timing drive cog pulley 106 mounted on crankshaft 102, timing cog belt 107 hung on timing drive cog pulley 106, and timing control Timed driven cog pulley 1 driven by the cog belt 107
08, a valve operating cam 109 that rotates integrally with the timed driven cog pulley 108, and these timed driven cog pulley 10
8 and the cam shaft 111 which is the shaft of the valve operating cam 109, the arm 112 which slidably contacts the valve operating cam 109 and swings, the lock nut 113 and the adjusting screw 114 attached to the arm 112, and the adjusting screw 11
4 and an exhaust valve 115 that comes into contact with the front end and opens and closes.
In addition, 116 is a valve guide, 117 is a coil spring, 1
18 is a retainer, 121 is a head cover, and 122 is a spark plug.
【0004】ガバナ105は、支軸105aでクランク
ケース101aに回転可能に取付け、外周にオイルディ
ッパ105bを有する。オイル124は、ガバナ105
の支軸105aの高さまで溜まっている。The governor 105 is rotatably attached to the crankcase 101a by a support shaft 105a and has an oil dipper 105b on the outer circumference. The oil 124 is the governor 105.
Is accumulated up to the height of the support shaft 105a.
【0005】[0005]
【発明が解決しようとする課題】回転するガバナ105
のオイルディッパ105bによってかき上げたオイル1
24は、調時コグベルト107に付着し、調時被動コグ
プーリ108部分まで運ばれ、飛散して動弁カム109
などの調時動弁系を潤滑する。このように、オイルポン
プを用いることなく、調時動弁系を潤滑することができ
るが、近年の高負荷、高回転化により、潤滑条件が厳し
くなってきているため、一層の潤滑向上が望まれる。本
発明の目的は、調時駆動部材をオイルキャリアとしたO
HCエンジンのより優れた潤滑システムを提供すること
にある。A rotating governor 105.
Oil 1 picked up by the oil dipper 105b
24 adheres to the timing cog belt 107, is carried to the timing driven cog pulley 108 portion, and scatters to the valve cam 109.
Lubricate the timing valve system such as. As described above, it is possible to lubricate the timing valve system without using an oil pump, but the lubrication conditions are becoming more severe due to the recent increase in load and rotation, so further improvement of lubrication is desired. Be done. An object of the present invention is to use an oil carrier as the timing drive member.
It is to provide a better lubrication system for HC engines.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の請求項1は、この潤滑システムに、調時駆動
部材のゆるみ側直線部の延長線と略垂直に交わる壁部を
備え、調時駆動部材に付着したオイルを壁部に当てて微
細にする。調時駆動部材に付着したオイルは、調時駆動
部材の直線部のカムプーリー側端から慣性力によって調
時駆動部材から離れ、壁部に衝突し微細な粒子になる。In order to achieve the above object, the first aspect of the present invention is to provide the lubricating system with a wall portion which intersects with an extension line of the loose side straight portion of the timing drive member substantially perpendicularly. , Oil applied to the timing drive member is applied to the wall portion to make it fine. The oil attached to the timing driving member is separated from the timing driving member by the inertial force from the end of the linear portion of the timing driving member on the cam pulley side, collides with the wall portion, and becomes fine particles.
【0007】請求項2は、請求項1のカムプーリーの少
なくとも一部を囲い部材で囲い、この囲い部材に壁部を
設けた。微細になったオイルは、囲い部材の内側に充満
し、各部に付着して潤滑作用をなす。According to a second aspect of the present invention, at least a part of the cam pulley of the first aspect is surrounded by an enclosing member, and the enclosing member is provided with a wall portion. The finely divided oil fills the inside of the enclosure member and adheres to each part to perform a lubricating action.
【0008】請求項3は、請求項2の囲い部材を、ヘッ
ドカバーとした。ヘッドカバーに壁部を設けるというこ
とで、部品点数を増やすことなく、また、既存製品の小
変更でオイルの微細化が達成できる。According to a third aspect, the enclosure member according to the second aspect is a head cover. By providing the wall portion on the head cover, it is possible to reduce the size of the oil without increasing the number of parts and by making a small change to the existing product.
【0009】請求項4は、カムプーリーの少なくとも一
部を請求項2の囲い部材で囲い、この囲い部材とカムプ
ーリーとの隙間をカムプーリー回転方向に沿って次第に
大きくした。囲い部材とカムプーリーとの隙間を、回転
方向に沿って大きくしたので、オイルの微細化が促せ
る。According to a fourth aspect of the present invention, at least a part of the cam pulley is surrounded by the enclosure member according to the second aspect, and the gap between the enclosure member and the cam pulley is gradually increased along the cam pulley rotation direction. Since the gap between the enclosing member and the cam pulley is increased along the rotation direction, the oil can be made finer.
【0010】[0010]
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図1は本発明に係る潤滑システムを備えた
バーチカル型のOHCエンジンの断面図であり、OHC
エンジン1は、シリンダブロックを兼ねた第1クランク
ケース2と、この第1クランクケース2のシリンダ部2
aと嵌合するピストン3と、このピストン3とピストン
ピン4を介して揺動可能に取付けたコンロッド5と、こ
のコンロッド5を回転可能に取付けるクランクピン6を
有するクランクシャフト7と、このクランクシャフト7
に取付けたギヤ8と、このギヤ8に噛み合うギヤ11
と、このギヤ11と一体になって回転するガバナ12
と、このガバナ12の回転軸となる支軸13と、この支
軸13をブラケット14を介して支持する第2クランク
ケース15と、ガバナ12外周に形成したオイルディッ
プ16…(…は複数個を示す。以下同様。)と、クラン
クシャフト7に取付けたドライブプーリー17と、この
ドライブプーリー17に掛けたタイミングベルト18
と、このタイミングベルト18により駆動されるカムプ
ーリー21と、このカムプーリー21と一体となって回
転するカム22と、これらのカムプーリー21及びカム
22の回転軸となるカム軸23と、カム22の周面と摺
接してシャフト24を軸として揺動するアーム25と、
このアーム25に取付けたアジャストスクリュー26及
びロックナット27と、このアジャストスクリュー26
の先端に当接し開閉する排気バルブ28と、この排気バ
ルブ28を摺動可能に支持するバルブガイド31と、排
気バルブ28端部に取付けたリテーナ32を介して、排
気バルブ28を閉方向に付勢するバルブスプリング33
と、これらの動弁装置を覆うヘッドカバー34とからな
る。なお、35はオイル、Uはオイル35の上限レベ
ル、Lはオイル35の下限レベルである。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a cross-sectional view of a vertical type OHC engine equipped with a lubrication system according to the present invention.
The engine 1 includes a first crankcase 2 that also serves as a cylinder block, and a cylinder portion 2 of the first crankcase 2.
a piston 3 that is fitted with a, a connecting rod 5 that is swingably attached via the piston 3 and a piston pin 4, a crankshaft 7 that has a crankpin 6 that rotatably attaches the connecting rod 5, and a crankshaft 7
The gear 8 attached to and the gear 11 that meshes with the gear 8
And a governor 12 that rotates integrally with the gear 11.
A support shaft 13 serving as a rotating shaft of the governor 12, a second crankcase 15 supporting the support shaft 13 via a bracket 14, and an oil dip 16 formed on the outer periphery of the governor 12 (... The same applies hereinafter), the drive pulley 17 attached to the crankshaft 7, and the timing belt 18 hung on the drive pulley 17.
A cam pulley 21 driven by the timing belt 18, a cam 22 that rotates integrally with the cam pulley 21, a cam shaft 23 that serves as a rotation shaft of the cam pulley 21 and the cam 22, and a cam 22. An arm 25 that is in sliding contact with the peripheral surface of the arm 25 and swings around the shaft 24 as an axis;
The adjusting screw 26 and the lock nut 27 attached to the arm 25, and the adjusting screw 26
The exhaust valve 28 is attached in the closing direction via an exhaust valve 28 that abuts on the tip of the exhaust valve 28, a valve guide 31 that slidably supports the exhaust valve 28, and a retainer 32 attached to the end of the exhaust valve 28. Biasing valve spring 33
And a head cover 34 that covers these valve operating devices. Note that 35 is oil, U is the upper limit level of the oil 35, and L is the lower limit level of the oil 35.
【0011】図2は本発明に係る潤滑システムのヘッド
カバーの斜視図であり、ヘッドカバー内側から見た図を
示す。ヘッドカバー34は、大きな凹部36と、カムプ
ーリー21を部分的に収納する円弧状段部37と、この
円弧状段部37の段部側面38と、これらの凹部36及
び円弧状段部37の周囲に形成したフランジ部41と、
円弧状段部37の一端に形成した壁部42と、円弧状段
部37の他端に形成した平坦部43と、フランジ部38
に開けた取付け穴44…とを備える。FIG. 2 is a perspective view of the head cover of the lubrication system according to the present invention, showing the view as seen from the inside of the head cover. The head cover 34 includes a large concave portion 36, an arcuate step portion 37 that partially houses the cam pulley 21, a step portion side surface 38 of the arcuate step portion 37, and the periphery of the concave portion 36 and the arcuate step portion 37. A flange portion 41 formed in
A wall portion 42 formed at one end of the arcuate step portion 37, a flat portion 43 formed at the other end of the arcuate step portion 37, and a flange portion 38.
And mounting holes 44 ...
【0012】図3は図1の3−3線断面図であり、タイ
ミングベルト18は、クランクシャフト7側のドライブ
プーリー17とカムプーリー21とに掛けられ、クラン
クシャフト7の回転(図では反時計回り)をカム22
(図1参照)に伝える。この時、タイミングベルト18
の図の上側の直線部18aは張り側、下側の直線部18
bはゆるみ側となる。FIG. 3 is a sectional view taken along line 3-3 of FIG. 1, in which the timing belt 18 is hung on the drive pulley 17 and the cam pulley 21 on the crankshaft 7 side to rotate the crankshaft 7 (counterclockwise in the figure). Around) cam 22
(See Figure 1). At this time, the timing belt 18
The straight part 18a on the upper side of FIG.
b is the loose side.
【0013】カムプーリー21の右方を、ヘッドカバー
34で覆う。ヘッドカバー34は、タイミングベルト1
8のゆるみ側直線部18bの延長線ELと略垂直に交わ
る壁部42を有し、円弧状段部37の壁部42とは逆の
端部に平坦部43を有する。The right side of the cam pulley 21 is covered with a head cover 34. The head cover 34 is the timing belt 1.
8 has a wall portion 42 that intersects the extension line EL of the loose side linear portion 18b substantially perpendicularly, and has a flat portion 43 at the end opposite to the wall portion 42 of the arcuate step portion 37.
【0014】カムプーリー21に掛けたタイミングベル
ト18とヘッドカバー34の円弧状段部37とのクリア
ランスは、カムプーリー21の回転方向に沿って次第に
大きくする。即ち、壁部42近傍のクリアランスをC
1、カム軸23の側方のクリアランスをC2、平坦部4
3近傍でのクリアランスをC3とすると、C1<C2<
C3となる。The clearance between the timing belt 18 hung on the cam pulley 21 and the arcuate step portion 37 of the head cover 34 is gradually increased along the rotational direction of the cam pulley 21. That is, the clearance near the wall 42 is C
1, the clearance on the side of the camshaft 23 is C2, the flat portion 4
If the clearance near 3 is C3, C1 <C2 <
It becomes C3.
【0015】以上に述べたOHCエンジンの潤滑システ
ムの作用を次に説明する。図4は本発明に係る潤滑シス
テムの作用を示すカムプーリー側面を示す断面図であ
り、カムプーリー21が回転中に、オイル35はタイミ
ングベルト18のゆるみ側直線部18bの延長線ELに
沿って滴状となって飛散し、ヘッドカバー34の壁部4
2に衝突し、更に細かくなって霧化する。タイミングベ
ルト18がこの壁部42近傍を過ぎてからも、タイミン
グベルト18に付着しているオイル35は遠心力によっ
て外側へ飛散し、ヘッドカバー34の内面の円弧状段部
37に衝突する。The operation of the above-described OHC engine lubricating system will be described below. FIG. 4 is a cross-sectional view showing the side surface of the cam pulley showing the operation of the lubrication system according to the present invention. While the cam pulley 21 is rotating, the oil 35 flows along the extension line EL of the slack side linear portion 18b of the timing belt 18. The droplets are scattered and scattered, and the wall portion 4 of the head cover 34.
It collides with 2 and becomes finer and atomized. Even after the timing belt 18 passes near the wall portion 42, the oil 35 attached to the timing belt 18 is scattered outward by the centrifugal force and collides with the arcuate step portion 37 on the inner surface of the head cover 34.
【0016】タイミングベルト18と円弧状段部37と
のクリアランスは回転方向に沿って次第に大きくなって
いるので、このクリアランス部分の圧力は回転方向に次
第に小さくなり、このクリアランス部分によって飛散し
たオイル35の霧化を促進させることができる。霧化し
たオイル35は、カムプーリー21の裏側(図の裏側)
のカム22(図4参照)周辺に広がり各部を潤滑する。
クランクケース2のヘッドカバー34取付け部に突出部
2aを有する。この突出部2aにおいてもタイミングベ
ルト18から飛散したオイル35が衝突して霧化する。Since the clearance between the timing belt 18 and the arcuate stepped portion 37 gradually increases along the rotational direction, the pressure in this clearance portion gradually decreases in the rotational direction, and the oil 35 scattered by this clearance portion is dispersed. Atomization can be accelerated. The atomized oil 35 is on the back side of the cam pulley 21 (the back side in the figure).
Spread around the cam 22 (see FIG. 4) and lubricate each part.
The crankcase 2 has a protrusion 2a at the head cover 34 mounting portion. The oil 35 scattered from the timing belt 18 also collides with and atomizes at the protruding portion 2a.
【0017】図5は本発明に係る潤滑システムの作用を
示すカム周辺の断面図であり、タイミングベルト18に
付着して運ばれたオイル35は、油滴となってヘッドカ
バー34の壁部42(図4参照)に衝突し、更に細かく
なって霧化する。この霧化したオイル35は、ヘッドカ
バー34内に拡散し、カム22表面とアーム25、カム
軸23とカムプーリー21、排気バルブ28とバルブガ
イド31等の摺動部に入り込み潤滑する。従って、カム
周辺の耐焼き付き性が向上し、高速・高負荷条件にも対
応可能となる。FIG. 5 is a sectional view of the periphery of the cam showing the operation of the lubrication system according to the present invention. The oil 35 adhering to and carried on the timing belt 18 becomes oil droplets and forms a wall portion 42 (of the head cover 34). (Refer to FIG. 4), and becomes finer and atomized. The atomized oil 35 diffuses into the head cover 34 and enters the sliding parts such as the surface of the cam 22 and the arm 25, the cam shaft 23 and the cam pulley 21, the exhaust valve 28 and the valve guide 31 for lubrication. Therefore, the seizure resistance around the cam is improved, and it is possible to cope with high speed and high load conditions.
【0018】尚、本実施例の潤滑システムは、バーチカ
ル型のOHCエンジンについて適用したが、ホリゾンタ
ル型にも適用できる。また、調時駆動部材は、タイミン
グベルトの他、ローラチェーンであっても良い。Although the lubrication system of this embodiment is applied to the vertical type OHC engine, it can also be applied to the horizontal type. Further, the timing drive member may be a roller chain other than the timing belt.
【0019】[0019]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1のOHCエンジンの潤滑システムは、こ
の潤滑システムに、調時駆動部材のゆるみ側直線部の延
長線と略垂直に交わる壁部を備え、調時駆動部材に付着
したオイルを壁部に当てて微細にするので、調時駆動部
材に付着したオイルは、調時駆動部材の直線部のカムプ
ーリー側端から慣性力によって調時駆動部材から離れ、
壁部に衝突し微細になって動弁装置全体に広がる。従っ
て、動弁装置各部を潤滑することができ、高負荷・高回
転域においても充分な耐焼き付き性を得ることができ
る。The present invention has the following effects due to the above configuration. The lubrication system for an OHC engine according to claim 1, wherein the lubrication system includes a wall portion that intersects substantially perpendicularly to an extension line of a straight portion on the loosening side of the timing drive member, and oil attached to the timing drive member is attached to the wall portion. Since it is applied finely, the oil attached to the timing drive member is separated from the timing drive member by the inertial force from the cam pulley side end of the linear portion of the timing drive member,
It collides with the wall and becomes finer and spreads over the entire valve train. Therefore, each part of the valve train can be lubricated, and sufficient seizure resistance can be obtained even in a high load / high rotation range.
【0020】請求項2のOHCエンジンの潤滑システム
は、カムプーリーの少なくとも一部を囲い部材で囲い、
この囲い部材に壁部を設けたので、微細になったオイル
は、囲い部材の内側に充満し、各部に付着して潤滑作用
をなす。従って、耐焼き付き性の一層の向上が図れる。The lubrication system for an OHC engine according to claim 2, wherein at least a part of the cam pulley is surrounded by an enclosing member,
Since the wall portion is provided in the enclosure member, the finely divided oil fills the inside of the enclosure member and adheres to each portion to perform a lubricating action. Therefore, the seizure resistance can be further improved.
【0021】請求項3のOHCエンジンの潤滑システム
は、囲い部材を、ヘッドカバーとしたので、部品点数を
増やすことなく、また、既存製品の小変更で動弁装置の
潤滑が向上でき、低コスト化が図れる。In the lubrication system for an OHC engine of claim 3, since the enclosure member is the head cover, the lubrication of the valve train can be improved without increasing the number of parts, and a small change of the existing product can reduce the cost. Can be achieved.
【0022】請求項4のOHCエンジンの潤滑システム
は、カムプーリーの少なくとも一部を請求項2の囲い部
材で囲い、この囲い部材とカムプーリーとの隙間をカム
プーリー回転方向に沿って次第に大きくしたので、オイ
ルの微細化が促せる。従って、動弁装置全体にオイルミ
ストを拡散することができ、各摺動部の十分な潤滑が図
れる。According to a fourth aspect of the lubrication system for an OHC engine, at least a part of the cam pulley is surrounded by the enclosure member according to the second aspect, and a gap between the enclosure member and the cam pulley is gradually increased along the rotation direction of the cam pulley. Therefore, the refinement of oil can be promoted. Therefore, the oil mist can be diffused throughout the valve train, and sufficient lubrication of each sliding portion can be achieved.
【図1】本発明に係る潤滑システムを備えたバーチカル
型のOHCエンジンの断面図FIG. 1 is a cross-sectional view of a vertical type OHC engine equipped with a lubrication system according to the present invention.
【図2】本発明に係る潤滑システムのヘッドカバーの斜
視図FIG. 2 is a perspective view of a head cover of a lubrication system according to the present invention.
【図3】図1の3−3線断面図FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;
【図4】本発明に係る潤滑システムの作用を示すカムプ
ーリー側面を示す断面図FIG. 4 is a sectional view showing a side surface of a cam pulley showing an operation of the lubrication system according to the present invention.
【図5】本発明に係る潤滑システムの作用を示すカム周
辺の断面図FIG. 5 is a sectional view of the periphery of a cam showing the operation of the lubrication system according to the present invention.
【図6】調時駆動部材をオイルのキャリアとした従来の
OHCエンジンの断面図FIG. 6 is a cross-sectional view of a conventional OHC engine that uses an oil carrier as a timing drive member.
1…OHCエンジン、17…ドライブプーリー、18…
調時駆動部材(タイミングベルト)、18b…ゆるみ側
直線部、21…カムプーリー、34…囲い部材(ヘッド
カバー)、35…オイル、37…囲い部材内面(円弧状
段部)、42…壁部、C1,C2,C3…隙間(クリア
ランス)、EL…延長線。1 ... OHC engine, 17 ... drive pulley, 18 ...
Timing driving member (timing belt), 18b ... Loose side linear portion, 21 ... Cam pulley, 34 ... Enclosing member (head cover), 35 ... Oil, 37 ... Enclosing member inner surface (arc-shaped step), 42 ... Wall portion, C1, C2, C3 ... Clearance, EL ... Extension line.
Claims (4)
イミングベルトなどの調時駆動部材を掛け渡し、この調
時駆動部材を介してオイルパンから動弁装置へオイルを
導くOHCエンジンの潤滑システムにおいて、この潤滑
システムは、前記調時駆動部材のゆるみ側直線部の延長
線と略垂直に交わる壁部を備え、前記調時駆動部材に付
着したオイルを前記壁部に当てて微細にすることを特徴
とするOHCエンジンの潤滑システム。1. A lubrication system for an OHC engine, wherein a timing driving member such as a timing belt is spanned between a drive pulley and a cam pulley, and oil is guided from an oil pan to a valve operating device via the timing driving member. The lubrication system includes a wall portion that intersects substantially perpendicularly to an extension line of the loosening side linear portion of the timing driving member, and applies oil adhering to the timing driving member to the wall portion to make it fine. OHC engine lubrication system.
い部材で囲い、この囲い部材に前記壁部を設けたことを
特徴とする請求項1のOHCエンジンの潤滑システム。2. The lubrication system for an OHC engine according to claim 1, wherein at least a part of the cam pulley is surrounded by an enclosing member, and the wall portion is provided on the enclosing member.
とを特徴とする請求項2記載のOHCエンジンの潤滑シ
ステム。3. The lubrication system for an OHC engine according to claim 2, wherein the enclosure member is a head cover.
い部材で囲い、この囲い部材とカムプーリーとの隙間を
カムプーリー回転方向に沿って次第に大きくしたことを
特徴とする請求項2記載のOHCエンジンの潤滑システ
ム。4. The OHC engine according to claim 2, wherein at least a part of the cam pulley is surrounded by an enclosing member, and a gap between the enclosing member and the cam pulley is gradually increased along a cam pulley rotating direction. Lubrication system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31568695A JP3161956B2 (en) | 1995-12-04 | 1995-12-04 | OHC engine lubrication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31568695A JP3161956B2 (en) | 1995-12-04 | 1995-12-04 | OHC engine lubrication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09151720A true JPH09151720A (en) | 1997-06-10 |
JP3161956B2 JP3161956B2 (en) | 2001-04-25 |
Family
ID=18068342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31568695A Expired - Lifetime JP3161956B2 (en) | 1995-12-04 | 1995-12-04 | OHC engine lubrication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3161956B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1233169A1 (en) | 2001-02-14 | 2002-08-21 | Honda Giken Kogyo Kabushiki Kaisha | Lubrication structure in ohc engine |
US6557515B2 (en) | 2000-05-23 | 2003-05-06 | Fuji Jukogyo Kabushiki Kaisha | Structure for lubricating valve-operating device of OHC engine and cover member for OHC engine |
JP2007321748A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
JP2007321746A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
JP2007321747A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
-
1995
- 1995-12-04 JP JP31568695A patent/JP3161956B2/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6557515B2 (en) | 2000-05-23 | 2003-05-06 | Fuji Jukogyo Kabushiki Kaisha | Structure for lubricating valve-operating device of OHC engine and cover member for OHC engine |
EP1233169A1 (en) | 2001-02-14 | 2002-08-21 | Honda Giken Kogyo Kabushiki Kaisha | Lubrication structure in ohc engine |
US6637399B2 (en) | 2001-02-14 | 2003-10-28 | Honda Giken Kogyo Kabushiki Kaisha | Lubrication structure in OHC engine |
JP2007321748A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
JP2007321746A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
JP2007321747A (en) * | 2006-06-05 | 2007-12-13 | Honda Motor Co Ltd | Vertical internal combustion engine having belt type transmission mechanism |
JP4583337B2 (en) * | 2006-06-05 | 2010-11-17 | 本田技研工業株式会社 | Vertical internal combustion engine having a belt-type transmission mechanism |
JP4583338B2 (en) * | 2006-06-05 | 2010-11-17 | 本田技研工業株式会社 | Vertical internal combustion engine having a belt-type transmission mechanism |
Also Published As
Publication number | Publication date |
---|---|
JP3161956B2 (en) | 2001-04-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3172103B2 (en) | Engine valve mechanism lubrication system | |
JP3840037B2 (en) | Engine breather equipment | |
US6557515B2 (en) | Structure for lubricating valve-operating device of OHC engine and cover member for OHC engine | |
CA2220613C (en) | Lubricating and breather system in engine | |
US6457449B1 (en) | Motorcycle engine cam chest having reed valve assembly | |
US4881496A (en) | Valve mechanism lubrication system for horizontal cylinder overhead valve engine | |
JPH09151720A (en) | Lubricating system of ohc engine | |
JP3943340B2 (en) | Bearing case for engine | |
JP3866486B2 (en) | Lubricating device for OHC type engine | |
JPH08177441A (en) | Lubricating device of ohc engine | |
JPH08200029A (en) | Oiling structure of thrust pad of camshaft | |
JPS5931997Y2 (en) | Crank pin lubricating device | |
KR100509694B1 (en) | Inclined engine with governor gear | |
JP4010770B2 (en) | Engine breather equipment | |
JPH0245457Y2 (en) | ||
JPH05149160A (en) | Governor lubricating device of centrifugal governor of engine | |
JP3943403B2 (en) | Engine camshaft pin mounting structure | |
JPS595128Y2 (en) | Internal combustion engine lubrication system | |
KR0139576Y1 (en) | Car engine lubricating device | |
JPH082412Y2 (en) | Vertical axis engine lubricator | |
JPH05156904A (en) | Valve system lubricating device for four-cycle engine | |
JPH0527329U (en) | Oil return device for internal combustion engine | |
JPH05306608A (en) | Lubricating device for engine | |
JP3077392B2 (en) | Engine lubrication device | |
JPS6244083Y2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080223 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090223 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100223 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100223 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110223 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110223 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120223 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130223 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130223 Year of fee payment: 12 |
|
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140223 Year of fee payment: 13 |
|
EXPY | Cancellation because of completion of term |