JP5300067B2 - Structure of oil pan in internal combustion engine - Google Patents

Structure of oil pan in internal combustion engine Download PDF

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JP5300067B2
JP5300067B2 JP2009103718A JP2009103718A JP5300067B2 JP 5300067 B2 JP5300067 B2 JP 5300067B2 JP 2009103718 A JP2009103718 A JP 2009103718A JP 2009103718 A JP2009103718 A JP 2009103718A JP 5300067 B2 JP5300067 B2 JP 5300067B2
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oil
oil pan
lubricating oil
pan
oil filter
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JP2010255457A (en
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宏之 槙原
直樹 小倉
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Daihatsu Motor Co Ltd
Toyota Motor Corp
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Daihatsu Motor Co Ltd
Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To facilitate die-cast or casting of an oil pan, when an oil filter mounting part with respect to an oil filter is integrally disposed to the oil pan and a boss part for mounting a component for the inside of the oil pan such as a baffle plate is integrally disposed to a portion in the oil pan out of the oil filter mounting part. <P>SOLUTION: In the structure of an oil pan, a bent pipe 15 forming a lubricating oil supply passage 11 from a lubricating oil pump is integrally disposed to the oil filter mounting part 6 to integrally form the boss part to the bent pipe, and the lubricating oil supply port 9 from the lubricating oil supply passage 11 to the oil filter 7 is formed to be a long groove hole. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は，内燃機関において，そのシリンダブロックの下面に取付けられるオイルパンに関するものである。   The present invention relates to an oil pan attached to the lower surface of a cylinder block in an internal combustion engine.

最近の内燃機関においては，先行技術としての特許文献１，２に記載されているように，潤滑油を濾過するオイルフィルタを着脱自在に取付けるためのオイルフィルタ取付け部を，当該オイルフィルタ取付け部における一部が前記オイルパン内に突出するようにして一体に設けるという構成にしている。 In modern internal combustion engine, as described in Patent Documents 1 and 2 as prior art, an oil filter mounting portion for mounting the oil filter you filtered lubricant detachably, the oil filter mounting portion A part of is provided integrally so as to protrude into the oil pan.

また，別の先行技術としての特許文献３，４には，前記オイルパンの内部に，例えば，潤滑油の揺れを防止するためのバッフルプレートとか，或いは，潤滑油ポンプへのオイル吸い込み管とかいったオイルパン内用部品を取付ける場合に，前記オイルパンの内面における所定個所には内向きに突出するボス片を一体に設けて，このボス片に前記オイルパン内用部品を取り付けることが記載されている。 Further, in Patent Documents 3 and 4 as other prior arts, for example, a baffle plate for preventing the lubricant from shaking, or an oil suction pipe to the lubricant pump is provided inside the oil pan. and when mounting the oil component pan, it is provided integrally with a boss piece protruding inwardly at predetermined positions on the inner surface of the oil pan, and Turkey attach the front Symbol component in the oil pan to the boss piece Is described.

特開平１０−２２０２１４号公報Japanese Patent Laid-Open No. 10-220214 特開平１１−２４１６１２号公報JP-A-11-241612 特開２００６−３１６６２７号公報JP 2006-316627 A 特開２００７−２８５２７１号公報JP 2007-285271 A

ところで，内燃機関によっては，前記オイルパンに一体に設けたオイルフィルタ取付け部のうちオイルパン内に突出する部分に，オイルパン内用部品を取付けるためのボス部を一体に設ける場合がある。   By the way, depending on the internal combustion engine, a boss portion for attaching an oil pan internal part may be integrally provided at a portion protruding into the oil pan in an oil filter attaching portion integrally provided on the oil pan.

しかし，前記オイルパンが軽合金等によるダイキャスト又は鋳造にて製造されている場合は，オイルフィルタ取付け部のうちオイルパン内に突出する部分にボス部を一体に設けると，前記ボス部の部分に金属溶湯の流れ込み不良が発生するばかりか，金属溶湯の流れ込み不良に起因しての鋳造巣及び鋳造凹みが発生して，前記ボス部の強度の低下を招来するおそれが大きいという問題がある。 However, if the if the oil pan is manufactured by die casting or cast by light alloy or the like, Ru provided Bo scan portion integrally with the portion protruding into the oil pan of the OIL filter mounting portion, the boss or the portion of the parts just flow defects occur in metallic melt, and casting nest and casting due to poor flow of the molten metal dent occurs and a large risk of lead to reduction in the strength of the boss portion There is a problem.

本発明は，この問題を，オイルフィルタへの潤滑油の円滑な導入を図りながら解消することを技術的課題とする。 The present invention, this problem, but such work to smooth introduction of the lubricant into OIL filter and technical problem to be erased et solutions.

この技術的課題を達成するため請求項１の発明は，
「シリンダブロックの下面に取付けられるオイルパンに，潤滑油を濾過するオイルフィルタをオイルパンの外側から着脱自在に装着するためのオイルフィルタ取付け部が，その一部が前記オイルパン内に突出するように一体に設けられ，このオイルフィルタ取付け部のうち前記オイルパン内に突出した部分に，オイルパン内用部品を取付けるためのボス部が一体に設けられている構成の内燃機関において，
前記オイルフィルタは，潤滑油の流入口と流出口が上向きに開口するように配置されていて，前記オイルフィルタ取付け部は，前記オイルフィルタにおける潤滑油の流入口及び流出口の上に位置して前記オイルパンの内部に突出した部分を有しており，前記オイルフィルタ取付け部のうち前記オイルパン内に突出した部分には，内部に潤滑油ポンプからの潤滑油供給通路とこれに連続して下向きに開口した潤滑油供給ポートとを設けた曲がり管が，前記オイルパンの内部に向けて凸に曲がった曲面を有する状態に形成されており，前記曲がり管における曲面の部分に前記ボス部を上向きに設けている一方，前記潤滑油供給ポートは長い溝孔に構成されている」
ことを特徴としている。
また，請求項２の発明は，請求項１において，前記潤滑油供給ポートは，前記オイルフィルタの周方向に延びる円弧状でかつ下向きに曲がった形状であることを特徴にしている。 In order to achieve this technical problem, the invention of claim 1
“An oil filter mounting part for detachably attaching an oil filter for filtering lubricating oil from the outside of the oil pan to an oil pan attached to the lower surface of the cylinder block , so that part of the oil filter protrudes into the oil pan. In the internal combustion engine having a configuration in which a boss part for attaching an oil pan internal part is integrally provided in a portion protruding into the oil pan of the oil filter attaching part.
The oil filter is arranged so that a lubricating oil inlet and outlet are opened upward, and the oil filter mounting portion is located above the lubricating oil inlet and outlet in the oil filter. A portion protruding into the oil pan, and a portion of the oil filter mounting portion protruding into the oil pan includes a lubricating oil supply passage from the lubricating oil pump and a continuous portion thereof. A bent pipe provided with a lubricating oil supply port that opens downward is formed in a state having a curved surface that is convexly convex toward the inside of the oil pan, and the boss portion is formed on the curved surface portion of the bent pipe . while being upwardly provided, before KiJun Namerayu supply port that is configured in the slot has a length "
It is characterized by that.
According to a second aspect of the present invention, in the first aspect, the lubricating oil supply port has an arc shape extending in a circumferential direction of the oil filter and a downward bent shape.

このように，オイルパン内用部品を取付けるためのボス部を，オイルフィルタ取付け部のうち前記オイルパン内に突出する部分に一体に設けた曲がり管に設けると，オイルパンの全体を軽合金等によるダイキャスト又は鋳造にて製造しても，前記ボス部への金属溶湯の流れ込みが，前記曲がり管の存在によって容易になるから，前記ボス部の部分に金属溶湯の流れ込み不良が発生することや鋳造巣及び鋳造凹みが発生することを大幅に低減できて，前記ボス部を所定の強度を有するものに構成することが確実にできる。 As described above, when the boss part for attaching the oil pan internal parts is provided in the bent pipe integrally provided in the part of the oil filter attaching part protruding into the oil pan, the entire oil pan is made of a light alloy or the like. It is prepared by die casting or casting by the flow of molten metal into the boss portion, because facilitated by the presence of the curved tube, defect generation child flow of the boss portion metals molten and Ya cast Zosu and casting recess is significantly reduced the occurrence, can the boss reliably be configured to have a predetermined strength.

しかも，オイルフィルタ内への潤滑油供給通路は，前記曲がり管の内部に形成されていて，この潤滑油供給通路がオイルフィルタの方向に曲がった形状になっていることに加えて，前記潤滑油供給通路から前記オイルフィルタ内への潤滑油供給ポートが長溝孔に構成されていることにより，この両者が相俟って，潤滑油をオイルフィルタ内に低い流れ抵抗の状態で円滑に導入できるから，潤滑油をフィルタエレメントの広い領域に均等に分配することができる。 In addition, the lubricating oil supply passage into the oil filter is formed inside the bent pipe, and the lubricating oil supply passage has a shape bent in the direction of the oil filter. by lubricating oil supply port from the supply passage to the oil in the filter is configured in the elongated groove hole, I this both phase俟, lubricating oil can be smoothly introduced in a state of low have flow resistance in the oil filter Therefore, the lubricating oil can be evenly distributed over a wide area of the filter element.

オイルパンの要部を示す平面図である。It is a top view which shows the principal part of an oil pan. 図１のII−II視側面図である。FIG. 2 is a side view taken along the line II-II in FIG. 1. 図１のIII −III 視拡大断面図である。FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1. 図３のIV−IV視断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. 図３のＶ−Ｖ視断面図である。FIG. 5 is a sectional view taken along line VV in FIG. 3.

以下，本発明の実施の形態を，図１〜図５の図面について説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS.

これらの図において，符号１は，軽合金等によるダイキャスト製又は鋳造製のオイルパンを示し，このオイルパン１は，内燃機関におけるシリンダブロック２の下面に複数本のボルト３にて締結されている。   In these drawings, reference numeral 1 denotes a die-cast or cast oil pan made of a light alloy or the like. The oil pan 1 is fastened to a lower surface of a cylinder block 2 in an internal combustion engine by a plurality of bolts 3. Yes.

前記オイルパン１のうちクランク軸線４の方向の一端面５の部分には，オイルフィルタ取付け部６が，下向きに開口するように一体に設けられている。 Wherein the portion of the end surface 5 in the direction of the crank axis 4 of the oil pan 1, an oil filter mounting portion 6 is provided integrally so as you open downwards.

このオイルフィルタ取付け部６は，その一部が前記オイルパン１の内部に突出するという構成であり，その下面側の部分には，筒体部８が一体に設けられ，この筒体部８内に，例えば実開昭６２−１４０９１４号公報等に記載された従来周知のカートリッジ型のオイルフィルタ７が，当該筒体部８の内周面に設けた雌ねじ部８ａに下方から螺合することにより，着脱自在に装着するように構成されている。従って，オイルフィルタ７における潤滑油の流入口と流出口とは上向きに開口している。また，オイルフィルタ取付け部６の一部は，オイルフィルタ７の上側においてオイルパン２の内部に突出している。 The oil filter mounting portion 6 is configured such that a part of the oil filter mounting portion 6 protrudes into the oil pan 1, and a cylindrical body portion 8 is integrally provided on the lower surface side of the oil filter mounting portion 6. to, for example, Japanese Utility Model 62-140914 discloses such traditional known cartridge-type oil filter 7 described in are screwed from below into the internal thread portion 8a provided on the inner peripheral surface of the cylindrical body portion 8 by being configured to detachably attached. Therefore, the inflow port and the outflow port of the lubricating oil in the oil filter 7 are opened upward. A part of the oil filter mounting portion 6 protrudes into the oil pan 2 above the oil filter 7.

前記筒体部８の内部には，これに前記オイルフィルタ７を装着したときに，このオイルフィルタ７の内部に連通する潤滑油供給ポート９と潤滑油排出ポート１０とが下向きに開口している。 Inside of the cylindrical body portion 8, the oil filter 7 when mounted, and a lubricating oil supply port 9 and the lubrication oil discharge port 10 communicating with the interior of the oil filter 7 is opened downward to Yes.

この場合，前記潤滑油供給ポート９及び潤滑油排出ポート１０のうち後者の潤滑油排出ポート１０は，筒体部８における中心に位置しているが，前者の潤滑油供給ポート９は，前記潤滑油排出ポート１０の外側に位置しており，しかも，この潤滑油供給ポート９は，図４に示すように，円周方向に沿って円弧状に延びるように長い長溝孔に構成されている。 In this case, of the lubricating oil supply port 9 and the lubricating oil discharge port 10, the latter lubricating oil discharge port 10 is located at the center of the cylindrical body portion 8. located outside the oil discharge port 10, moreover, the lubricating oil supply port 9, as shown in FIG. 4, is configured in length have elongated groove hole to extend in an arc shape along the circumferential direction .

前記オイルパン１には，内部に前記潤滑油供給ポート９に連通する潤滑油供給通路１１を備えた供給側管路１２と，内部に前記潤滑油排出ポート１０に連通する潤滑油排出通路１３を備えた排出側管路１４とが一体に設けられている。   The oil pan 1 has a supply side pipe 12 having a lubricating oil supply passage 11 communicating with the lubricating oil supply port 9 inside, and a lubricating oil discharge passage 13 communicating with the lubricating oil discharge port 10 inside. The discharge side pipe line 14 provided is provided integrally.

前記供給側管路１２は，その内部の潤滑油供給通路１１が前記オイルパン１における一端面５に開口部１１ａを有するように，前記オイルパン１における一端面５にまで延びており，前記潤滑油供給通路１１の開口部１１ａに，図示しない潤滑油ポンプから吐出された潤滑油が供給される。 The supply-side pipe 12, sea urchin by that lubricating oil supply passage 11 of the interior having a opening 11a on one end surface 5 in the oil pan 1, extends to one end face 5 in the oil pan 1, wherein the lubricating oil supply passage 1 1 open mouth 11a, lubricating oil discharged from the lubricating oil pump (not shown) Ru is supplied.

また，前記供給側管路１２のうち前記オイルフィルタ取付け部６側の部分は，図５に示すように，横方向から下向きに曲がった曲がり管１５に形成されて，前記オイルフィルタ取付け部６に一体に連結されており，これにより，この供給側管路１２の内部における潤滑油供給通路１１が前記長溝型の潤滑油供給ポート９に連通するように構成されている。 Further, a portion of the supply side pipe 12 on the oil filter mounting portion 6 side is formed as a bent pipe 15 bent downward from the lateral direction as shown in FIG. Thus, the lubricating oil supply passage 11 in the supply side pipe line 12 is connected to the long groove type lubricating oil supply port 9.

一方，前記排出側管路１４は，その内部の潤滑油排出通路１３が前記オイルパン１における上面１ａに開口部１３ａを有するように，前記オイルパン１の上面１ａにまで延びており，この排出側管路１４における潤滑油排出通路１３の開口部１３ａは，前記オイルパン１をシリンダブロック２に対して取付けたときに，前記シリンダブロック２側におけるメインオイルギャラリー１６に連通するように構成されている。   On the other hand, the discharge side conduit 14 extends to the upper surface 1a of the oil pan 1 so that the lubricating oil discharge passage 13 therein has an opening 13a on the upper surface 1a of the oil pan 1. The opening 13 a of the lubricating oil discharge passage 13 in the side pipe 14 is configured to communicate with the main oil gallery 16 on the cylinder block 2 side when the oil pan 1 is attached to the cylinder block 2. Yes.

そして，前記オイルフィルタ取付け部６のうち曲がり管１６はオイルパン３の内部に向けて凸の曲面を有しており，この曲がり管１６に，上向きに突出するボス部１７が一体に設けられ，このボス部１７に，前記オイルパン１内に配設したバッフルプレート１８を取付けるように構成している。 The bent pipe 16 of the oil filter mounting portion 6 has a convex curved surface toward the inside of the oil pan 3, and a boss portion 17 protruding upward is integrally provided on the bent pipe 16 . A baffle plate 18 disposed in the oil pan 1 is attached to the boss portion 17.

この構成において，潤滑油ポンプから吐出された潤滑油は，潤滑油供給通路１１から潤滑油供給ポート９を経てオイルフィルタ７に入って濾過される。 In this arrangement, lubricating oil lubricating oil discharged from the pump is filtered enters the oil filter 7 from the lubricating oil supply passage 11 through the lubricating oil supply port 9.

このオイルフィルタ７で濾過された潤滑油は，潤滑油排出ポート１０から潤滑油排出通路１３を通ってシリンダブロック２におけるメインオイルギャリー１６に送られ，このメインオイルギャラリー１６から内燃機関における各所の作動部分に供給される。 Filtered lubricating oil The oil filter 7 is sent to the main oil Garry 16 in the cylinder block 2 from the lubricant oil discharge port 10 through the lubricating oil discharge passage 13, actuated from the main oil gallery 16 of the various parts in an internal combustion engine Supplied to the part.

この場合において，前記潤滑油供給通路１１のうちオイルフィルタ７への潤滑油供給ポート９に連通する部分は，下向きの曲がり管１５にてオイルフィルタ７の方向に曲がった形状になっていることに加えて，前記潤滑油供給通路１１から前記オイルフィルタ７内への潤滑油供給ポート９が長溝孔に構成されていることにより，この両者が相俟って，潤滑油をオイルフィルタ７内に，低い流れ抵抗の状態で，広い領域に円滑に導入することができる。 In this case, the portion which communicates with the lubricating oil supply port 9 to the oil filter 7 of the lubricating oil supply passage 11 has a shape bent in the direction of the oil filter 7 at Kino Shimomukai bent pipe 15 In addition, since the lubricating oil supply port 9 from the lubricating oil supply passage 11 into the oil filter 7 is formed as a long groove hole, both of them combine to feed the lubricating oil into the oil filter 7. In addition, it can be smoothly introduced into a wide area with low flow resistance.

一方，前記オイルフィルタ取付け部６のうちオイルパン１内の部分に一体に設けたボス部１７には，前記オイルパン１内におけるバッフルプレート１８とか，或いは，前記潤滑油ポンプへの吸い込み管等のようなオイルパン内用部品が取付けられる。   On the other hand, a boss portion 17 provided integrally with a portion in the oil pan 1 of the oil filter mounting portion 6 has a baffle plate 18 in the oil pan 1 or a suction pipe to the lubricating oil pump. Such an oil pan internal part is attached.

このボス部１７は，前記供給側管路１２のうち下向きへの曲がり管１５と一体に構成されていることにより，オイルパン１の全体を軽合金等によるダイキャスト又は鋳造にて製造する場合に，前記ボス部１７への金属溶湯の流れ込みが，前記曲がり管１５の存在によって容易になるから，前記ボス部１７の部分に金属溶湯の流れ込み不良が発生することや鋳造巣及び鋳造凹みが発生することを確実に低減できる。 The boss portion 17 is formed integrally with the downward bent pipe 15 in the supply side pipe line 12, so that the entire oil pan 1 is manufactured by die casting or casting using a light alloy or the like. the flow of molten metal into the boss portion 17, because facilitated by the presence of the curved tube 15, defect generation child flow parts in metallic melt of the boss portion 17 and the Ya cast Zosu and casting recess Can be reliably reduced.

１ オイルパン
２ シリンダブロック
６ オイルフィルタ取付け部
７ オイルフィルタ
８ 筒体部
９ 潤滑油供給ポート
１０ 潤滑油排出ポート
１１ 潤滑油供給通路
１２ 供給側管路
１３ 潤滑油排出通路
１４ 排出側通路
１５ 曲がり管
１７ ボス部
１８ バッフルプレート DESCRIPTION OF SYMBOLS 1 Oil pan 2 Cylinder block 6 Oil filter attachment part 7 Oil filter 8 Cylinder part 9 Lubricating oil supply port 10 Lubricating oil discharge port 11 Lubricating oil supply path 12 Supply side pipe 13 Lubricant oil discharge path 14 Discharge side path 15 Curved pipe 17 Boss part 18 Baffle plate

Claims (2)

シリンダブロックの下面に取付けられるオイルパンに，潤滑油を濾過するオイルフィルタをオイルパンの外側から着脱自在に装着するためのオイルフィルタ取付け部が，その一部が前記オイルパン内に突出するように一体に設けられ，このオイルフィルタ取付け部のうち前記オイルパン内に突出した部分に，オイルパン内用部品を取付けるためのボス部が一体に設けられている構成の内燃機関において，
前記オイルフィルタは，潤滑油の流入口と流出口が上向きに開口するように配置されていて，前記オイルフィルタ取付け部は，前記オイルフィルタにおける潤滑油の流入口及び流出口の上に位置して前記オイルパンの内部に突出した部分を有しており，前記オイルフィルタ取付け部のうち前記オイルパン内に突出した部分には，内部に潤滑油ポンプからの潤滑油供給通路とこれに連続して下向きに開口した潤滑油供給ポートとを設けた曲がり管が，前記オイルパンの内部に向けて凸に曲がった曲面を有する状態に形成されており，前記曲がり管における曲面の部分に前記ボス部を上向きに設けている一方，前記潤滑油供給ポートは長い溝孔に構成されている，
内燃機関におけるオイルパンの構造。 An oil filter mounting part for detachably mounting an oil filter for filtering lubricating oil from the outside of the oil pan to an oil pan mounted on the lower surface of the cylinder block is so that a part thereof protrudes into the oil pan. In the internal combustion engine having a structure in which a boss part for attaching an oil pan internal part is integrally provided at a part protruding into the oil pan of the oil filter attaching part.
The oil filter is arranged so that a lubricating oil inlet and outlet are opened upward, and the oil filter mounting portion is located above the lubricating oil inlet and outlet in the oil filter. A portion protruding into the oil pan, and a portion of the oil filter mounting portion protruding into the oil pan includes a lubricating oil supply passage from the lubricating oil pump and a continuous portion thereof. A bent pipe provided with a lubricating oil supply port that opens downward is formed in a state having a curved surface that is convexly convex toward the inside of the oil pan, and the boss portion is formed on the curved surface portion of the bent pipe . while being upwardly provided, before KiJun Namerayu supply port that is configured in the slot has a length,
The structure of the oil pan in the inner combustion engine. 前記潤滑油供給ポートは，前記オイルフィルタの周方向に延びる円弧状でかつ下向きに曲がった形状である，The lubricating oil supply port has an arc shape extending in the circumferential direction of the oil filter and a downward bent shape.
請求項１に記載した内燃機関におけるオイルパンの構造。The structure of the oil pan in the internal combustion engine according to claim 1.
JP2009103718A 2009-04-22 2009-04-22 Structure of oil pan in internal combustion engine Active JP5300067B2 (en)

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