JPH0629533B2 - Lubricating device for internal combustion engine - Google Patents
Lubricating device for internal combustion engineInfo
- Publication number
- JPH0629533B2 JPH0629533B2 JP58196951A JP19695183A JPH0629533B2 JP H0629533 B2 JPH0629533 B2 JP H0629533B2 JP 58196951 A JP58196951 A JP 58196951A JP 19695183 A JP19695183 A JP 19695183A JP H0629533 B2 JPH0629533 B2 JP H0629533B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- pipe
- oil
- port
- oil chamber
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
-
- 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
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 本発明は内燃機関の潤滑装置に関する。The present invention relates to a lubricating device for an internal combustion engine.
船外機等に用いられる内燃機関の潤滑装置の一つとし
て、燃料とは別系統から、オイルポンプによって潤滑油
をエンジン各部に供給する分離潤滑装置がある。As one of the lubricating devices for internal combustion engines used for outboard motors and the like, there is a separate lubricating device that supplies lubricating oil to each part of the engine from a system separate from fuel by an oil pump.
従来、上記潤滑装置として、例えば特願昭58-94108号特
許願に添付した明細書及び図面に示されるように、オイ
ルポンプのポンプ作用を営む油室に連なる吸込口に、吸
込配管を介してオイルタンクを接続するとともに、オイ
ルポンプの上記油室に連なる吐出口に、吐出配管を介し
て機関の吸気管路を接続してなる潤滑装置が用いられて
いる。Conventionally, as the above-mentioned lubricating device, for example, as shown in the specification and drawings attached to the Japanese Patent Application No. Sho 58-94108, the suction port connected to the oil chamber that performs the pumping action of the oil pump, through the suction pipe. A lubricating device is used in which an oil tank is connected and an intake pipe line of an engine is connected to a discharge port connected to the oil chamber of an oil pump via a discharge pipe.
ここで、上記潤滑装置においては、オイルポンプの油室
と吐出口との間に、吸気管路内の負圧によって開くこと
なく、油室内の吐出圧力によってのみ開き、吐出口側か
ら油室側への潤滑油の逆流を防止する逆止弁を介装する
ことにより、油室から吐出される潤滑油の吐出圧力、吐
出流量を安定化し、エンジンの運転状態に応じた潤滑油
供給量の適正制御を図っている。Here, in the above-mentioned lubrication device, between the oil chamber of the oil pump and the discharge port, it is opened only by the discharge pressure in the oil chamber without opening due to the negative pressure in the intake pipe, and from the discharge port side to the oil chamber side. A check valve that prevents the reverse flow of lubricating oil to the oil supply stabilizes the discharge pressure and flow rate of the lubricating oil discharged from the oil chamber, and ensures that the amount of lubricating oil supplied is appropriate according to the engine operating conditions. Controlled.
また、上記潤滑装置は、油室を外部空間に連通可能とす
るエア抜き口を備えている。すなわち、この潤滑装置に
おいては、エンジンの停止時に、上記エア抜き口に螺着
されているエア抜きねじを外した状態で、オイルタンク
から吸込配管、吸込口、吸込口に連なる油室に潤滑油を
満たしていき、エア抜き口から潤滑油が漏れ始めた時点
で、エア抜き口にエア抜きねじを再び螺着することによ
り、吸込配管側のエア抜きを行うことを可能としてい
る。Further, the lubrication device includes an air vent that allows the oil chamber to communicate with the external space. That is, in this lubricating device, when the engine is stopped, with the air bleed screw that is screwed in the air bleed port removed, the lubricating oil is fed from the oil tank to the suction pipe, the suction port, and the oil chamber connected to the suction port. When the lubricating oil starts to leak from the air vent port, the air vent screw on the suction pipe side can be vented by screwing the air vent screw back into the air vent port.
しかしながら、上記潤滑装置にあっては、たとえ上記エ
ア抜き口の使用によってエア抜きを行ったとしても、吐
出配管の反吸気管路側が吸気管路の負圧によって開くこ
とのない逆止弁の存在によって閉塞されていることか
ら、吐出口及び吐出配管のエア抜きを行うことができな
い。However, in the above lubrication device, even if air is bleeding by using the air bleeding port, there is a check valve that does not open the non-intake line side of the discharge pipe due to the negative pressure of the intake line. Since it is blocked by, it is not possible to bleed the discharge port and discharge pipe.
従って、この潤滑装置にあっては、オイルポンプの上記
吐出側におけるエアの残存により、エンジンの始動から
吸気管路への潤滑油供給に至るまで、長時間、例えばア
イドル運転状態で３０分〜１時間程度、スロットル弁の
全開運転状態でも５０秒〜６０秒程度を要し、この間に
機関各部の潤滑不良に基づくエンジントラブルを生ずる
おそれもある。Therefore, in this lubricating device, due to the remaining air on the discharge side of the oil pump, it takes a long time, for example, 30 minutes to 1 in an idle operation state from the engine start to the supply of lubricating oil to the intake pipe line. It takes about 50 seconds to 60 seconds even when the throttle valve is fully opened, and during this time, engine trouble may occur due to poor lubrication of various parts of the engine.
本発明は、簡素な構造により、オイルポンプの吸込配管
及び吐出配管ならびに各油室のエア抜きを迅速確実に行
うことを目的とする。An object of the present invention is to quickly and surely perform air bleeding for the suction pipe and the discharge pipe of an oil pump and each oil chamber with a simple structure.
上記目的を達成するために、本発明にあっては、オイル
ポンプの油室と吐出口との間に、吸気管路内の負圧によ
って開くことなく、油室内の吐出圧力によってのみ開
き、吐出口側から油室側への潤滑油の逆流を防止する逆
止弁を介装してなる内燃機関の潤滑装置において、「オ
イルポンプの吐出口に一体化した吐出管に、吐出配管を
介して機関の吸気管路を接続すること」、および「開閉
弁を中間部に有してなる連通管の一端を上記吸込口もし
くは吸込管に一体的に接続し、その他端を上記吐出口も
しくは吐出管に一体的に接続してなること」の２つの構
成を組合わせることにより、「機関の吸気負圧を利用し
てポンプの吸込配管、吐出配管、各油室のエア抜きを行
う」ものである。In order to achieve the above object, in the present invention, between the oil chamber of the oil pump and the discharge port, it is opened only by the discharge pressure in the oil chamber without being opened by the negative pressure in the intake pipe line, and the discharge is performed. In a lubricating device for an internal combustion engine, which includes a check valve for preventing the backflow of lubricating oil from the outlet side to the oil chamber side, "a discharge pipe integrated with a discharge port of an oil pump is provided with a discharge pipe. Connecting the intake pipe line of the engine ", and" connecting one end of the communication pipe having an opening / closing valve in the middle part to the suction port or the suction pipe, and the other end to the discharge port or the discharge pipe " By combining the two configurations of "integrally connecting to the pump,""the intake suction and discharge piping of the pump and the air in each oil chamber are bleeded by using the intake negative pressure of the engine". .
すなわち、本発明によれば、下記〜の作用効果があ
る。That is, according to the present invention, there are the following effects.
エンジン運転時、例えばアイドル運転時に、前記連通
管の開閉弁を開くと、吸込口側と吐出口側とが逆止弁を
迂回して連通され、結果として吸気管路の負圧が吐出口
から逆止弁を迂回し、吸込口、吸込口に間欠的に連なる
各油室に作用し、吸込口に連なる吸込配管、吐出口に連
なる吐出配管、およびポンプ室内油室のエア抜きを迅速
に行うことができる。When the on-off valve of the communication pipe is opened during engine operation, for example, during idle operation, the suction port side and the discharge port side communicate by bypassing the check valve, and as a result, negative pressure in the intake pipe line from the discharge port. Bypasses the check valve and acts on the suction port and each oil chamber that is intermittently connected to the suction port, and quickly bleeds air from the suction pipe that connects to the suction port, the discharge pipe that connects to the discharge port, and the pump chamber oil chamber. be able to.
このとき、吸気負圧が作用する吐出口側を吸込口側に
連通する連通管は、その一端が上記吸込口もしくは吸込
管に一体的に接続され、かつその他端が上記吐出口もし
くは吐出管に一体的に接続される。したがって、連通管
の管路長は極めて短くなり、管路の圧力損失、管路中間
部へのエア滞溜のチャンスを小とし、エア抜きの迅速、
確実を徹底できる。At this time, one end of the communication pipe that communicates the discharge port side where the intake negative pressure acts with the suction port side is integrally connected to the suction port or the suction pipe, and the other end is connected to the discharge port or the discharge pipe. Connected integrally. Therefore, the pipe length of the communication pipe becomes extremely short, reducing the pressure loss of the pipe, the chance of air retention in the middle of the pipe, and the quick air bleeding.
You can be absolutely certain.
また、オイルポンプの構成の一部として前記連通管を
一体的に具備するものとなり、構造はコンパクトで簡
素、機関への組込性も良好となる。Further, since the communication pipe is integrally provided as a part of the structure of the oil pump, the structure is compact and simple, and the assemblability into the engine is improved.
以下、本発明の実施例を図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例が適用されてなる船外機用２
サイクル３気筒エンジンを示す正面図、第２図は同実施
例に用いられているオイルポンプを示す断面図である。FIG. 1 is an outboard motor 2 to which an embodiment of the present invention is applied.
FIG. 2 is a front view showing a cycle 3-cylinder engine, and FIG. 2 is a sectional view showing an oil pump used in the same embodiment.
シリンダブロック１１には上下に３つの気筒が形成さ
れ、シリンダブロック１１とクランクケース１２との間
には縦置クランク軸１３が軸支され、クランク軸１３の
下端部には、船外機の推進ユニット内に配設されるドラ
イブ軸１３Ａが連結されている。各気筒にはピストン１
４が収容され、各ピストン１４は連接棒１５を介してク
ランク軸１３に連結されている。各気筒のクランク室１
６には、吸気管路１７を介して、気化器１８が接続され
ている。なお、図において１９は潤滑油を貯えるオイル
タンクである。Three cylinders are vertically formed in the cylinder block 11, a vertical crankshaft 13 is supported between the cylinder block 11 and the crankcase 12, and a lower end portion of the crankshaft 13 propels the outboard motor. A drive shaft 13A arranged in the unit is connected. Piston 1 for each cylinder
4 are accommodated, and each piston 14 is connected to the crankshaft 13 via a connecting rod 15. Crank chamber 1 for each cylinder
A vaporizer 18 is connected to 6 via an intake pipe line 17. In the figure, 19 is an oil tank for storing lubricating oil.
シリンダブロック１１の正面下部にはオイルポンプ２０
が固定されている。オイルポンプ２０は、第２図に示す
ように、オイルタンク１９が連通される吸込口２１と各
気筒の吸気管路１７が連通される各吐出口２２Ａ〜２２
Ｃ（２２Ｂ，２２Ｃは不図示）を備えるハウジング２３
と、クランク軸１３に固定されている駆動ギヤ２４と噛
合う被動ギヤ２５と、被動ギヤ２５と噛合うリングギヤ
２６と、吸込口２１及び各吐出口２２Ａ〜２２Ｃと間欠
的に連通可能とされる油室２７を形成するとともにリン
グギヤ２６と一体化されてハウジング２３に回転可能に
支持されている旋回体２８と、旋回体２８の油室２７に
収容されて油室２７の内部を上下に往復動するプランジ
ャ２９と、プランジャ２９を下方側に付勢するばね３０
と、プランジャ２９に設けられているピン３１と、ハウ
ジング２３に固定されてプランジャ２９のピン３１の先
端を上方に押上げ可能とするカム３２とを有している。
すなわち、クランク軸１３の回転に伴い、駆動ギヤ２４
と被動ギヤ２５、被動ギヤ２５とリングギヤ２６の各噛
合いを介して旋回体２８がハウジング２３の内部で回転
すると、旋回体２８の回転とともに回転するプランジャ
２９はそのピン３１とカム３２との当接を介して油室２
７の内部を上下動することによって、油室２７の内部に
ポンプ作用を生じさせ、吸込口２１に配設されている吸
込管３３に接続されている吸込配管３４から吸込んだ潤
滑油を、各吐出口２２Ａ〜２２Ｃに配設されている吐出
管３５Ａ〜３５Ｃに接続されている吐出配管３６Ａ〜３
６Ｃを介して、各気筒の吸気管路１７に圧送し、混合気
中に吐出可能としている。An oil pump 20 is installed at the lower front of the cylinder block 11.
Is fixed. As shown in FIG. 2, the oil pump 20 has suction ports 21 communicating with the oil tank 19 and discharge ports 22A to 22 communicating with the intake conduit 17 of each cylinder.
Housing 23 including C (22B and 22C are not shown)
The driven gear 25 that meshes with the drive gear 24 fixed to the crankshaft 13, the ring gear 26 that meshes with the driven gear 25, the suction port 21, and the discharge ports 22A to 22C can be intermittently communicated. A revolving structure 28 that forms the oil chamber 27 and is rotatably supported by the housing 23 integrally with the ring gear 26, and reciprocates up and down inside the oil chamber 27 by being housed in the oil chamber 27 of the revolving structure 28. Plunger 29 and a spring 30 for urging the plunger 29 downward
And a cam 32 fixed to the housing 23 and capable of pushing up the tip of the pin 31 of the plunger 29 upward.
That is, as the crankshaft 13 rotates, the drive gear 24
When the revolving unit 28 rotates inside the housing 23 through the meshing of the driven gear 25 and the driven gear 25 and the ring gear 26, the plunger 29 that rotates together with the rotation of the revolving unit 28 contacts the pin 31 and the cam 32. Oil chamber 2 through contact
By moving the inside of 7 up and down, a pumping action is generated inside the oil chamber 27, and the lubricating oil sucked from the suction pipe 34 connected to the suction pipe 33 arranged in the suction port 21 is Discharge pipes 36A to 3C connected to discharge pipes 35A to 35C arranged at the discharge ports 22A to 22C.
Via 6C, it is pressure-fed to the intake pipe line 17 of each cylinder so that it can be discharged into the air-fuel mixture.
また、オイルポンプ２０には、リングギヤ２６の内周部
に上下動可能な状態で挿入されている調整板３７と、調
整板３７を下方側に付勢するばね３８と、調整板３７に
一体化されているピン３９の先端を上方側に押動する調
整カム４０とを有している。上記調整板３７は、その上
面にプランジャ２９の下面を当接させて、プランジャ２
９の下方端位置を規制し、従ってプランジャ２９の往復
ストロークを規制することによってオイルポンプ２０の
最大吐出量を規制可能としている。ここで、ハウジング
２３から突出する調整カム４０のカム軸４１にはポンプ
レバー４２が固定され、ポンプレバー４２には、リンク
４３を介して、スロットルバルブ軸４４に連結されてい
るスロットルレバー４５が結合されている。すなわち、
スロットルバルブの開度が増加するに従い、スロットル
レバー４５、リンク４３を介して、ポンプレバー４２及
び調整カム４０の作動角が増加すると、調整板３７はよ
り下方に移動し、プランジャ２９の往復ストロークが増
加することとなり、オイルポンプ２０の吐出量を増加す
ることが可能となっている。Further, in the oil pump 20, an adjusting plate 37 inserted in the inner peripheral portion of the ring gear 26 in a vertically movable state, a spring 38 for urging the adjusting plate 37 downward, and an adjusting plate 37 integrated with the adjusting plate 37. It has an adjusting cam 40 for pushing the tip of the pin 39 that is pushed upward. The lower surface of the plunger 29 is brought into contact with the upper surface of the adjusting plate 37 so that the plunger 2
The maximum discharge amount of the oil pump 20 can be regulated by regulating the lower end position of 9 and thus the reciprocating stroke of the plunger 29. Here, a pump lever 42 is fixed to a cam shaft 41 of an adjusting cam 40 protruding from the housing 23, and a throttle lever 45 connected to a throttle valve shaft 44 is coupled to the pump lever 42 via a link 43. Has been done. That is,
When the operating angle of the pump lever 42 and the adjustment cam 40 increases via the throttle lever 45 and the link 43 as the opening degree of the throttle valve increases, the adjustment plate 37 moves further downward, and the reciprocating stroke of the plunger 29 increases. As a result, the discharge amount of the oil pump 20 can be increased.
また、オイルポンプ２０の各吐出口２２Ａ〜２２Ｃと、
該各吐出口２２Ａ〜２２Ｃと連通可能な状態にある油室
２７との間には、吸気管路１７の内部に生ずる負圧によ
って開くことなく、油室２７に生ずる吐出圧力によって
のみ開き、吐出口２２Ａ〜２２Ｃ側から油室２７側への
潤滑油の逆流を防止する逆止弁４６が介装されている、
逆止弁４６は、油室２７から吐出される潤滑油の吐出圧
力、吐出流量を安定化し、エンジンの運転状態に応じた
潤滑油供給量の適正制御の確実化を図っている。In addition, the respective discharge ports 22A to 22C of the oil pump 20,
Between the discharge ports 22A to 22C and the oil chamber 27 which is in a state of being communicable with each other, the negative pressure generated inside the intake pipe line 17 does not open, but only the discharge pressure generated in the oil chamber 27 causes the discharge. A check valve 46 for preventing the backflow of the lubricating oil from the outlets 22A to 22C side to the oil chamber 27 side is interposed.
The check valve 46 stabilizes the discharge pressure and the discharge flow rate of the lubricating oil discharged from the oil chamber 27, and ensures proper control of the lubricating oil supply amount according to the operating state of the engine.
さらに、オイルポンプ２０の吸込口２１には連通管４７
の一端が一体的に接続され、連通管４７の他端には、開
閉弁４８を介して、連通管４９の一端が一体的に接続さ
れている。連通管４９の他端側は、三方に分岐され、そ
れらの分岐部４９Ａ〜４９Ｃは各吐出口２２Ａ〜２２Ｃ
に一体的に接続されている。すなわち、このオイルポン
プ２０にあっては、吸込口２１側と吐出口２２Ａ〜２２
Ｃ側とが、油室２７を迂回する連通管４７、４９によっ
て相互に連通可能とされている。Further, a communication pipe 47 is attached to the suction port 21 of the oil pump 20.
Is integrally connected to the other end of the communication pipe 47, and one end of a communication pipe 49 is integrally connected to the other end of the communication pipe 47 via an opening / closing valve 48. The other end of the communication pipe 49 is branched in three directions, and the branch portions 49A to 49C are respectively connected to the discharge ports 22A to 22C.
Are integrally connected to. That is, in this oil pump 20, the suction port 21 side and the discharge ports 22A to 22A are provided.
The C side can communicate with each other by communication pipes 47 and 49 that bypass the oil chamber 27.
なお、オイルポンプ２０のハウジング２３は、吸込口２
１に連なるエア抜き口５０を備え、エア抜き口５０には
エア抜きねじ５１が脱着可能とされている。しかしなが
ら、このオイルポンプ２０においては、必ずしも上記エ
ア抜き口５０、エア抜きねじ５１を備える必要がない。The housing 23 of the oil pump 20 has a suction port 2
1 is provided with an air vent port 50, and an air vent screw 51 can be attached to and detached from the air vent port 50. However, the oil pump 20 does not necessarily need to include the air vent port 50 and the air vent screw 51.
次に、上記実施例の作用について説明する。Next, the operation of the above embodiment will be described.
エンジン運転時に、例えばアイドル運転時に、開閉弁４
８を開操作し、吸込口２１と各吐出口２２Ａ〜２２Ｃと
を、逆止弁４６を迂回して連通することにより、吸気管
路１７とオイルタンク１９とが連通することとなる。こ
れにより、吸気管路１７の内部に生ずる負圧の作用によ
って、オイルタンク１９から吸気管路１７への流体の円
滑な流れが、吸込配管３４、各吐出配管３６Ａ〜３６Ｃ
において生成可能となり、吸込配管３４、吸込口２１、
吸込口２１に間欠的に連なる各油室２７、各吐出口２２
Ａ〜２２Ｃ，各吐出配管３６Ａ〜３６Ｃ内のエアを迅速
に吸気管路１７側に排気可能とする。On-off valve 4 during engine operation, for example during idle operation
By opening 8 and connecting the suction port 21 and each of the discharge ports 22A to 22C by bypassing the check valve 46, the intake pipe line 17 and the oil tank 19 are connected. As a result, due to the action of the negative pressure generated inside the intake pipe line 17, the smooth flow of the fluid from the oil tank 19 to the intake pipe line 17 is generated by the suction pipe 34 and the discharge pipes 36A to 36C.
In the suction pipe 34, the suction port 21,
Oil chambers 27 intermittently connected to the suction port 21, discharge ports 22
The air in the A to 22C and the discharge pipes 36A to 36C can be quickly exhausted to the intake pipe line 17 side.
このとき、吸気負圧が作用する吐出口２２Ａ〜２２Ｃを
吸込口２１に連通する連通管４７、４９は、それらの一
端が吸込口２１に一体的に接続され、かつそれらの他端
が吐出口２２Ａ〜２２Ｃに一体的に接続される。したが
って、連通管４７、４９の管路長は極めて短くなり、管
路の圧力損失、管路中間部へのエア滞溜のチャンスを小
とし、エア抜きの迅速、確実を徹底できる。At this time, one end of each of the communication pipes 47 and 49 that communicate the discharge ports 22A to 22C on which the intake negative pressure acts with the suction port 21 is integrally connected to the suction port 21, and the other ends thereof are the discharge ports. 22A to 22C are integrally connected. Therefore, the pipe length of the communication pipes 47 and 49 becomes extremely short, the pressure loss of the pipes and the chance of air retention in the middle portion of the pipes are reduced, and quick and reliable air bleeding can be thoroughly achieved.
また、オイルポンプ２０の構成の一部として前記連通管
４７、４９を一体的に具備するものとなり、構造はコン
パクトで簡素、機関への組込性も良好となる。Further, since the communication pipes 47 and 49 are integrally provided as a part of the configuration of the oil pump 20, the structure is compact and simple, and the assembling into the engine is also good.
従って、上記実施例によれば、究めて迅速に吸込配管３
４、各吐出配管３６Ａ〜３６Ｃ，及び各油室２７のエア
抜きを行うことが可能となり、エンジンの始動から吸気
管路１７へ潤滑油供給に至る時間を短時間、例えばアイ
ドル運転状態で５分〜６分程度とし、潤滑不良に基づく
エンジントラブルの発生を確実に回避することが可能と
なる。Therefore, according to the above embodiment, the suction pipe 3
4. It becomes possible to bleed air from each of the discharge pipes 36A to 36C and each of the oil chambers 27, and the time from starting the engine to supplying the lubricating oil to the intake pipe line 17 is short, for example, 5 minutes in the idle operation state. By setting the time to about 6 minutes, it is possible to surely avoid the occurrence of engine trouble due to poor lubrication.
なお、上記オイルポンプ２０は、前述のように、エア抜
き口５０、エア抜きねじ５１を備えているので、エンジ
ンの停止時に、エア抜きねじ５１を外されたエア抜き口
５０から従来におけると同様なエア抜きを行うようにし
てもよい。これによれば、これに続く上記連通管４７、
４９を用いた前述エア抜き作業時間をより短縮化するこ
とが可能となる。ただし、エア抜き口５０を用いること
なく、連通管４７、４９用いることのみによってエア抜
きを行なうものとすれば、エア抜き口５０からの潤滑油
の漏出による汚れをオイルポンプ２０の周囲に生ずるこ
とがない。Since the oil pump 20 is provided with the air vent port 50 and the air vent screw 51 as described above, when the engine is stopped, the air vent port 50 from which the air vent screw 51 is removed is the same as the conventional one. You may make it air-bleed. According to this, the communication pipe 47 following this,
It is possible to further shorten the above-mentioned air bleeding work time using 49. However, if the air bleeding is performed only by using the communication pipes 47 and 49 without using the air bleeding port 50, contamination due to leakage of lubricating oil from the air bleeding port 50 may occur around the oil pump 20. There is no.
また、本発明においては、第２図に２点鎖線で示すよう
に、開閉弁５２を中間部に有してなる連通管５３を、吸
込管３３と各吐出管３５Ａ〜３５Ｃとの間に介装するも
のとしてもよい。この場合には、吸込管３３、各吐出管
３５Ａ〜３５Ｃ、連通管５３、開閉弁５２を一体的に形
成することにより、構造の簡素化をより安全に図ること
が可能である。Further, in the present invention, as shown by the chain double-dashed line in FIG. 2, a communication pipe 53 having an opening / closing valve 52 in an intermediate portion is interposed between the suction pipe 33 and each of the discharge pipes 35A to 35C. You may wear it. In this case, the suction pipe 33, the discharge pipes 35A to 35C, the communication pipe 53, and the opening / closing valve 52 are integrally formed, so that the structure can be simplified more safely.
また、上記実施例においては、連通管４９の他端側を各
吐出口２２Ａ〜２２Ｃに連なる三方に分岐させることに
より、単一の開閉弁４８を用いるものとした。しかしな
がら、吸込口２１と各吐出口２２Ａ〜２２Ｃとの間に、
気筒数分の開閉弁及び連通管を介装するものとしてもよ
い。Further, in the above embodiment, the single open / close valve 48 is used by branching the other end of the communication pipe 49 into three directions connected to the respective discharge ports 22A to 22C. However, between the suction port 21 and each of the discharge ports 22A to 22C,
On-off valves and communication pipes corresponding to the number of cylinders may be provided.
以上のように本発明によれば、簡素な構造により、オイ
ルポンプの吸込配管及び吐出配管ならびに各油室のエア
抜きを迅速確実に行うことができる。As described above, according to the present invention, the suction pipe and the discharge pipe of the oil pump and the air in each oil chamber can be quickly and reliably deflated with a simple structure.
第１図は本発明の一実施例が適用されてなる船外機用内
燃機関を示す正面図、第２図は同実施例に用いられてな
るオイルポンプを示す断面図である。 １７……吸気管路、１９……オイルタンク、２０……オ
イルポンプ、２１……吸込口、２２Ａ〜２２Ｃ……吐出
口、２７……油室、３４……吸込配管、３６Ａ〜３６Ｃ
……吐出配管，４６……逆止弁、４７、４９、５３……
連通管、４８、５２……開閉弁。FIG. 1 is a front view showing an internal combustion engine for an outboard motor to which an embodiment of the present invention is applied, and FIG. 2 is a sectional view showing an oil pump used in the same embodiment. 17 ... Intake line, 19 ... Oil tank, 20 ... Oil pump, 21 ... Suction port, 22A-22C ... Discharge port, 27 ... Oil chamber, 34 ... Suction pipe, 36A-36C
...... Discharge pipe, 46 ...... Check valve, 47, 49, 53 ......
Communication pipe, 48, 52 ... Open / close valve.
Claims (1)
なる吸込口に一体化した吸込管に、吸込配管を介してオ
イルタンクを接続するとともに、オイルポンプの上記油
室に連なる吐出口に一体化した吐出管に、吐出配管を介
して機関の吸気管路を接続し、オイルポンプの上記油室
と上記吐出口との間に、吸気管路内の負圧によって開く
ことなく、油室内の吐出圧力によってのみ開き、吐出口
側から油室側への潤滑油の逆流を防止する逆止弁を介装
してなる内燃機関の潤滑装置において、開閉弁を中間部
に有してなる連通管の一端を上記吸込口もしくは吸込管
に一体的に接続し、その他端を上記吐出口もしくは吐出
管に一体的に接続してなることを特徴とする内燃機関の
潤滑装置。Claim: What is claimed is: 1. An oil tank is connected via a suction pipe to a suction pipe that is integrated with a suction port that communicates with an oil chamber that performs the pumping action of an oil pump, and that is integrated with a discharge port that communicates with the oil chamber of the oil pump. The intake pipe of the engine is connected to the converted discharge pipe through the discharge pipe, and the inside of the oil chamber is not opened between the oil chamber of the oil pump and the discharge port due to the negative pressure in the intake pipe. In a lubricating device of an internal combustion engine, which is opened only by discharge pressure and has a check valve for preventing backflow of lubricating oil from the discharge port side to the oil chamber side, a communication pipe having an opening / closing valve in the middle part A lubricating device for an internal combustion engine, characterized in that one end thereof is integrally connected to the suction port or the suction pipe, and the other end is integrally connected to the discharge port or the discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58196951A JPH0629533B2 (en) | 1983-10-22 | 1983-10-22 | Lubricating device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58196951A JPH0629533B2 (en) | 1983-10-22 | 1983-10-22 | Lubricating device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6088811A JPS6088811A (en) | 1985-05-18 |
| JPH0629533B2 true JPH0629533B2 (en) | 1994-04-20 |
Family
ID=16366367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58196951A Expired - Lifetime JPH0629533B2 (en) | 1983-10-22 | 1983-10-22 | Lubricating device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629533B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3124828B2 (en) * | 1992-02-15 | 2001-01-15 | ヤマハ発動機株式会社 | Lubricating oil supply device for vehicle engine |
| JP3124818B2 (en) * | 1992-02-15 | 2001-01-15 | ヤマハ発動機株式会社 | Lubricating oil supply device for vehicle engine |
| US5526783A (en) * | 1992-06-29 | 1996-06-18 | Yamaha Hatsudoki Kabushiki Kaisha | Lubricant control |
| JPH0754626A (en) * | 1993-08-09 | 1995-02-28 | Yamaha Motor Co Ltd | Lubricating device of engine |
| US5542387A (en) * | 1994-08-09 | 1996-08-06 | Yamaha Hatsudoki Kabushiki Kaisha | Component layout for engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5220604U (en) * | 1975-07-31 | 1977-02-14 | ||
| JPS54140141U (en) * | 1978-03-23 | 1979-09-28 | ||
| JPS636468Y2 (en) * | 1979-03-14 | 1988-02-23 |
-
1983
- 1983-10-22 JP JP58196951A patent/JPH0629533B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6088811A (en) | 1985-05-18 |
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