JP2017089533A - Oil pan device - Google Patents

Oil pan device Download PDF

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Publication number
JP2017089533A
JP2017089533A JP2015222131A JP2015222131A JP2017089533A JP 2017089533 A JP2017089533 A JP 2017089533A JP 2015222131 A JP2015222131 A JP 2015222131A JP 2015222131 A JP2015222131 A JP 2015222131A JP 2017089533 A JP2017089533 A JP 2017089533A
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Prior art keywords
oil pan
oil
bolt
engine
bolt hole
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JP2015222131A
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JP6661984B2 (en
Inventor
貴哉 前田
Takaya Maeda
貴哉 前田
直樹 水上
Naoki Mizukami
直樹 水上
松永　務
Tsutomu Matsunaga
務 松永
功 橘川
Isao Kitsukawa
功 橘川
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Priority to JP2015222131A priority Critical patent/JP6661984B2/en
Priority to EP16864363.3A priority patent/EP3375992B1/en
Priority to CN201680065886.5A priority patent/CN108350774B/en
Priority to PCT/JP2016/083560 priority patent/WO2017082402A1/en
Priority to US15/775,204 priority patent/US20180355772A1/en
Publication of JP2017089533A publication Critical patent/JP2017089533A/en
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    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0408—Sump drainage devices, e.g. valves, plugs
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • 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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an oil pan device that enables reduction of the residual oil quantity in an oil pan when an engine oil is discharged.SOLUTION: The invention relates to an oil pan device 1 including: an oil pan 10 which is attached to a lower end 5a of a crank case 5 of an engine; and a drain bolt 50. The oil pan 10 has: a recessed part 33 formed by denting a bottom surface part 32 upwardly; an inclined part 35 defining the recessed part 33; and a bolt hole 36 provided at the inclined part 35. When the drain bolt 50 is attached to the bolt hole 36, a head 52 of the drain bolt 50 is housed in the recessed part 33.SELECTED DRAWING: Figure 3

Description

本発明は、オイルパン装置、特に車両のエンジンに用いられるオイルパン装置に関する。   The present invention relates to an oil pan apparatus, and more particularly to an oil pan apparatus used for a vehicle engine.

車両のエンジンにおいては、クランクケースの下端にエンジンオイルを貯留するためのオイルパンが取り付けられる。一般に、オイルパンの底部には、エンジンオイルを排出するためのボルト孔が設けられており、このボルト孔には、ボルト孔を閉塞するためのドレンボルトが着脱可能に取り付けられる。   In a vehicle engine, an oil pan for storing engine oil is attached to a lower end of a crankcase. Generally, a bolt hole for discharging engine oil is provided at the bottom of the oil pan, and a drain bolt for closing the bolt hole is detachably attached to the bolt hole.

特開平５−３０６６５３号公報JP-A-5-306653

車両においては、操縦安定性向上等の観点から、エンジンの搭載位置を下げる要請がある。一方、オイルパンの底部の高さ位置が下がると、例えば、車両の最低地上高といった所定の下限高さを下回る虞があるので、薄型（浅皿）オイルパンを採用することが検討されている。   In vehicles, there is a request to lower the mounting position of the engine from the viewpoint of improving steering stability. On the other hand, when the height position of the bottom of the oil pan is lowered, for example, there is a possibility that it falls below a predetermined lower limit height such as the lowest ground height of the vehicle. .

薄型オイルパンを用いた場合、ドレンボルトの頭部がオイルパン底面部の最下端位置よりも下方に突き出していると、所定の下限高さの確保に不利となる。よって、オイルパンの底面部を上方に凹ませて凹部を形成し、その凹部内にドレンボルトを直立状に取り付ける手法が考えられる。   When a thin oil pan is used, if the drain bolt head protrudes downward from the lowermost position of the bottom surface of the oil pan, it is disadvantageous for securing a predetermined lower limit height. Therefore, a method is conceivable in which the bottom of the oil pan is recessed upward to form a recess, and the drain bolt is attached upright in the recess.

しかしながら、かかる手法では、エンジンオイルの排出時に、ボルト孔の周りのオイルパン内に比較的多量のエンジンオイルが残留してしまう。   However, in such a method, a relatively large amount of engine oil remains in the oil pan around the bolt hole when the engine oil is discharged.

本発明は、上記事情に鑑みてなされたものであり、エンジンオイルの排出時に、オイルパン内の残油量を低減することが可能なオイルパン装置を提供することを目的とする。   The present invention has been made in view of the above circumstances, and an object thereof is to provide an oil pan apparatus capable of reducing the amount of residual oil in the oil pan when engine oil is discharged.

本発明に係るオイルパン装置は、エンジンのクランクケースの下端に取り付けられるオイルパンと、ドレンボルトと、を備え、前記オイルパンは、底面部を上方に凹ませて形成した凹部と、前記凹部を画成する傾斜部と、前記傾斜部に設けられたボルト孔と、を有し、前記ドレンボルトが前記ボルト孔に取り付けられたとき、前記ドレンボルトの頭部を前記凹部内に収容するように構成されたことを特徴とする。   An oil pan apparatus according to the present invention includes an oil pan attached to a lower end of a crankcase of an engine, and a drain bolt. The oil pan includes a recess formed by recessing a bottom portion upward, and the recess. An inclined portion that defines, and a bolt hole provided in the inclined portion, and when the drain bolt is attached to the bolt hole, the head of the drain bolt is received in the recess. It is structured.

また、前記凹部の頂部は、前記オイルパンの前記クランクケースとの取付面よりも高い位置に配置される。   Moreover, the top part of the said recessed part is arrange | positioned in the position higher than the attachment surface with the said crankcase of the said oil pan.

また、前記凹部は、上方に向けて断面山形に形成される。   Moreover, the said recessed part is formed in cross-sectional mountain shape toward upper direction.

本発明に係るオイルパン装置では、エンジンオイルの排出時に、オイルパン内の残油量を低減することが可能になるという優れた効果を発揮する。   The oil pan apparatus according to the present invention exhibits an excellent effect that the amount of residual oil in the oil pan can be reduced when the engine oil is discharged.

本発明の一実施形態に係るオイルパン装置の底面側を示す概略図である。It is the schematic which shows the bottom face side of the oil pan apparatus which concerns on one Embodiment of this invention. 図１のＩＩ−ＩＩ断面図である。It is II-II sectional drawing of FIG. 図１のＩＩＩ−ＩＩＩ断面図である。It is III-III sectional drawing of FIG. （ａ）は、本発明の一実施形態における残油レベルを示す図であり、（ｂ）は、傾斜部を有しない凹部内にドレンボルトを直立状に取り付けた場合の残油レベルを示す図である。(A) is a figure which shows the residual oil level in one Embodiment of this invention, (b) is a figure which shows the residual oil level at the time of attaching a drain bolt upright in the recessed part which does not have an inclination part. It is.

以下、添付図面に基づいて、本発明の実施形態に係るオイルパン装置を説明する。なお、後述する実施形態において、オイルパン装置は、図示しない車両のエンジンに装着された状態にあり、上下方向は、車両の上下方向を基準とする。   Hereinafter, an oil pan apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In an embodiment described later, the oil pan device is mounted on a vehicle engine (not shown), and the vertical direction is based on the vertical direction of the vehicle.

図１は、本発明の一実施形態に係るオイルパン装置１の底面側を示している。また、図２は、図１のＩＩ−ＩＩ断面図であり、図３は、図１のＩＩＩ−ＩＩＩ断面図である。   FIG. 1 shows a bottom side of an oil pan apparatus 1 according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

図２，３において、符号Ｒは、路面を示す。また、図３において、一点鎖線Ｌは、ドレンボルト５０の頭部５２の最下端位置を示し、二点鎖線Ｘは、車両の最低地上高を示す。なお、本実施形態では、エンジンは、車両への搭載状態において、シリンダ軸が鉛直方向に対し若干傾くよう傾斜して配置される。そのため、図２，３では、見た目上、エンジンオイルＯの油面と路面Ｒが図の左右方向に対し傾いて示されている。   2 and 3, the symbol R indicates a road surface. Moreover, in FIG. 3, the dashed-dotted line L shows the lowest end position of the head 52 of the drain bolt 50, and the dashed-two dotted line X shows the lowest ground clearance of a vehicle. In the present embodiment, the engine is disposed so as to be inclined so that the cylinder shaft is slightly inclined with respect to the vertical direction when mounted on the vehicle. Therefore, in FIGS. 2 and 3, the oil surface of the engine oil O and the road surface R are shown to be inclined with respect to the horizontal direction in the drawings.

なお、これらの図面において、オイルパン装置１の前後左右方向は、車両の前後左右方向とは無関係であり、説明の便宜上定められたものに過ぎない。本実施形態では、オイルパン１０の前方向が車両の前方向に一致する。   In these drawings, the front / rear / left / right direction of the oil pan apparatus 1 is irrelevant to the front / rear / left / right direction of the vehicle, and is merely determined for convenience of explanation. In the present embodiment, the forward direction of the oil pan 10 coincides with the forward direction of the vehicle.

図１〜３に示すように、オイルパン装置１は、エンジンのクランクケース５の下端５ａに取り付けられたオイルパン１０と、ドレンボルト５０とを備える。   As shown in FIGS. 1 to 3, the oil pan apparatus 1 includes an oil pan 10 attached to a lower end 5 a of the crankcase 5 of the engine and a drain bolt 50.

オイルパン１０は、金属材料あるいは耐熱性の樹脂材料からなり、側面を構成する側壁２０と、底面を構成する底板３０とを備える。オイルパン１０の内側には、図示しないクランクシャフト等の被潤滑部材を潤滑するためのエンジンオイルＯが貯留される。本実施形態において、オイルパン１０は、側壁２０の上下方向の長さが短い薄型（浅皿）オイルパンからなる。   The oil pan 10 is made of a metal material or a heat-resistant resin material, and includes a side wall 20 constituting a side surface and a bottom plate 30 constituting a bottom surface. Inside the oil pan 10, engine oil O for lubricating a lubricated member such as a crankshaft (not shown) is stored. In the present embodiment, the oil pan 10 is a thin (shallow dish) oil pan whose side wall 20 has a short vertical length.

側壁２０の上端部には、クランクケース５の下端５ａにガスケット（不図示）を介して取り付けられるフランジ部２１が設けられる。フランジ部２１は、ボルト２２等により、クランクケース５の下端５ａに取り外し可能に取り付けられる。   At the upper end portion of the side wall 20, a flange portion 21 that is attached to the lower end 5a of the crankcase 5 via a gasket (not shown) is provided. The flange portion 21 is detachably attached to the lower end 5a of the crankcase 5 with a bolt 22 or the like.

底板３０は、平板状に形成された平板部３１と、底面部３２（下面部）を上方に凹ませた凹部３３と、を備える。この凹部３３は、底板３０の左半分で前寄りの位置に形成されている。   The bottom plate 30 includes a flat plate portion 31 formed in a flat plate shape and a concave portion 33 in which a bottom surface portion 32 (lower surface portion) is recessed upward. The recess 33 is formed at the front half of the left half of the bottom plate 30.

本実施形態では特に、凹部３３は、オイルパン１０のクランクケース５（下端５ａ）との取付面Ｆ（フランジ部２１の上面）よりも高い位置に頂部３３Ｔを有する。また、凹部３３は、図３に示すように、上方に向けて断面山形に形成される。   Particularly in the present embodiment, the concave portion 33 has a top portion 33T at a position higher than a mounting surface F (upper surface of the flange portion 21) of the oil pan 10 with the crankcase 5 (lower end 5a). Moreover, the recessed part 33 is formed in cross-sectional mountain shape toward upper direction, as shown in FIG.

より詳しくは、凹部３３は、底面部３２を部分円柱形状に凹ませて形成されている。凹部３３は、部分円柱の外周面形状に形成された曲面状の第１傾斜部３４と、部分円柱の端面形状に形成された平面状の第２傾斜部３５と、を有する。本実施形態においては、第２傾斜部３５に垂直にボルト孔３６を設けている。   More specifically, the concave portion 33 is formed by denting the bottom surface portion 32 into a partial cylindrical shape. The concave portion 33 includes a curved first inclined portion 34 formed in the outer peripheral surface shape of the partial cylinder, and a planar second inclined portion 35 formed in the end surface shape of the partial cylinder. In the present embodiment, a bolt hole 36 is provided perpendicular to the second inclined portion 35.

ボルト孔３６は、第２傾斜部３５を貫通する貫通孔３６ａと、オイルパン１０内に配置され、貫通孔３６ａに同軸に設けられたナット部３６ｂと、を有する。ナット部３６ｂの第２傾斜部３５側端部にはフランジ３６ｃが形成されており、溶接等により、このフランジ３６ｃが第２傾斜部３５に固定される。   The bolt hole 36 includes a through hole 36a that penetrates the second inclined portion 35, and a nut portion 36b that is disposed in the oil pan 10 and provided coaxially with the through hole 36a. A flange 36c is formed at the end of the nut portion 36b on the second inclined portion 35 side, and the flange 36c is fixed to the second inclined portion 35 by welding or the like.

また、ボルト孔３６には、ナット部３６ｂとフランジ３６ｃとの境界位置に横孔３６ｄが形成される。横孔３６ｄは、ボルト孔３６の軸に対し傾斜しており、貫通孔３６ａの最下端位置からこの境界位置に向けて略水平に貫通している。   Further, the bolt hole 36 is formed with a lateral hole 36d at a boundary position between the nut portion 36b and the flange 36c. The lateral hole 36d is inclined with respect to the axis of the bolt hole 36, and penetrates substantially horizontally from the lowest end position of the through hole 36a toward the boundary position.

ドレンボルト５０は、オイルパン１０の外部からボルト孔３６に取り外し可能に取り付けられる。具体的には、ドレンボルト５０は、ネジ部５１と、頭部５２とを有し、ネジ部５１がボルト孔３６にねじ込まれて螺合される。ネジ部５１の根本部分には、貫通孔３６ａの内周面との隙間をシールするためのＯリング５３が取り付けられる。   The drain bolt 50 is detachably attached to the bolt hole 36 from the outside of the oil pan 10. Specifically, the drain bolt 50 has a screw part 51 and a head part 52, and the screw part 51 is screwed into the bolt hole 36 and screwed together. An O-ring 53 for sealing a gap with the inner peripheral surface of the through hole 36 a is attached to the root portion of the screw portion 51.

本実施形態のオイルパン装置１は、ドレンボルト５０がボルト孔３６に取り付けられたときに、頭部５２を凹部３３内に収容するように構成される。そして、オイルパン装置１（ここでは、ドレンボルト５０の頭部５２）の最下端の高さ位置Ｌが、車両の所定の下限高さ、本実施形態では最低地上高Ｘよりも上方に位置している。   The oil pan apparatus 1 of the present embodiment is configured to accommodate the head 52 in the recess 33 when the drain bolt 50 is attached to the bolt hole 36. And the height position L of the lowermost end of the oil pan apparatus 1 (here, the head 52 of the drain bolt 50) is positioned above a predetermined lower limit height of the vehicle, in this embodiment, the lowest ground height X. ing.

次に、本実施形態のオイルパン装置１の作用効果について、図３および図４に基づいて説明する。図４（ａ）は、図３に示す本実施形態のオイルパン装置１において、ボルト孔３６からドレンボルト５０を取り外し、エンジンオイルＯを排出したときの残油レベルを示している。また、図４（ｂ）は、傾斜部を有しない比較例のオイルパン装置１’において、凹部内にドレンボルトを直立状に取り付ける構成での残油レベルを示している。   Next, the effect of the oil pan apparatus 1 of this embodiment is demonstrated based on FIG. 3 and FIG. FIG. 4A shows a residual oil level when the drain bolt 50 is removed from the bolt hole 36 and the engine oil O is discharged in the oil pan apparatus 1 of the present embodiment shown in FIG. FIG. 4B shows a residual oil level in a configuration in which a drain bolt is installed upright in the recess in the oil pan apparatus 1 ′ of the comparative example having no inclined portion.

本実施形態においては、図４（ａ）に示すように、ボルト孔３６からドレンボルト５０を取り外すと、横孔３６ｄからもエンジンオイルＯが外部へ排出される。よって、ボルト孔３６の横孔３６ｄの下端位置（一点鎖線Ｚ１で示す高さ位置）が残油レベルとなる。   In this embodiment, as shown in FIG. 4A, when the drain bolt 50 is removed from the bolt hole 36, the engine oil O is also discharged to the outside from the side hole 36d. Therefore, the lower end position (the height position indicated by the alternate long and short dash line Z1) of the horizontal hole 36d of the bolt hole 36 is the residual oil level.

一方、図４（ｂ）に示すように、比較例のオイルパン装置１’では、ボルト孔３６’の横孔３６ｄ’におけるオイルパン１０’内の開口部の下端位置（一点鎖線Ｚ２で示す高さ位置）が残油レベルとなる。この比較例の残油レベル（Ｚ２）は、本実施形態の残油レベル（Ｚ１）よりも高い位置となる。   On the other hand, as shown in FIG. 4 (b), in the oil pan apparatus 1 ′ of the comparative example, the lower end position of the opening in the oil pan 10 ′ in the lateral hole 36d ′ of the bolt hole 36 ′ (the height indicated by the alternate long and short dash line Z2). Position) is the residual oil level. The residual oil level (Z2) of this comparative example is higher than the residual oil level (Z1) of this embodiment.

従って、本実施形態では、ボルト孔３６を第２傾斜部３５に設けたことで、（Ｚ２−Ｚ１）に相当する分だけ、残油量を減少させることできる。   Therefore, in this embodiment, by providing the bolt hole 36 in the second inclined portion 35, the amount of residual oil can be reduced by an amount corresponding to (Z2-Z1).

また、本実施形態では、図３に示すように、底面部３２を上方に凹ませた凹部３３を設け、この凹部３３内にドレンボルト５０の頭部５２を収容するように構成している。この結果、底面部３２から路面Ｒ側に頭部５２が突き出すのを抑制することが可能になり、エンジン搭載位置を下げるのに有利となる。   Further, in the present embodiment, as shown in FIG. 3, a concave portion 33 in which the bottom surface portion 32 is recessed upward is provided, and the head portion 52 of the drain bolt 50 is accommodated in the concave portion 33. As a result, it is possible to prevent the head 52 from protruding from the bottom surface portion 32 toward the road surface R, which is advantageous for lowering the engine mounting position.

また、本実施形態の凹部３３は、オイルパン１０のクランクケース５との取付面Ｆよりも高い位置に頂部３３Ｔを配置している。そのため、下限レベルたる最低地上高Ｘを遵守すべく、薄型オイルパンを用いた場合であっても、頭部５２の収容スペースを十分に確保することができる。   Moreover, the recessed part 33 of this embodiment has arrange | positioned the top part 33T in the position higher than the attachment surface F with the crankcase 5 of the oil pan 10. FIG. Therefore, even when a thin oil pan is used in order to comply with the minimum ground clearance X that is the lower limit level, a sufficient storage space for the head 52 can be secured.

また、本実施形態では、ボルト孔３６を第２傾斜部３５に設けたことにより、ドレンボルト５０の取り付け（取り外し）作業を、より力の掛け易い長めのスパナやメガネレンチを用いて容易に行うことできる。   In the present embodiment, the bolt hole 36 is provided in the second inclined portion 35, so that the drain bolt 50 can be easily attached (removed) using a long spanner or a spectacle wrench that is easier to apply force. I can.

なお、本発明は、上述の実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、適宜変形して実施することが可能である。   In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

例えば、本実施形態では、凹部が部分円柱形状に凹ませて形成されるが、凹部の形状は他にも考えられ、例えば、略半球状に形成されてもよい。   For example, in the present embodiment, the concave portion is formed by being recessed into a partial cylindrical shape, but the shape of the concave portion is also conceivable, and may be formed in, for example, a substantially hemispherical shape.

１ オイルパン装置
５ エンジンのクランクケース
１０ オイルパン
３２ 底面部
３３ 凹部
３５ （第２）傾斜部
３６ ボルト孔
５０ ドレンボルト
５２ 頭部 DESCRIPTION OF SYMBOLS 1 Oil pan apparatus 5 Engine crankcase 10 Oil pan 32 Bottom face part 33 Recessed part 35 (2nd) Inclined part 36 Bolt hole 50 Drain bolt 52 Head

Claims (3)

エンジンのクランクケースの下端に取り付けられるオイルパンと、ドレンボルトと、を備え、
前記オイルパンは、
底面部を上方に凹ませて形成した凹部と、
前記凹部を画成する傾斜部と、
前記傾斜部に設けられたボルト孔と、を有し、
前記ドレンボルトが前記ボルト孔に取り付けられたとき、前記ドレンボルトの頭部を前記凹部内に収容するように構成された
ことを特徴とするオイルパン装置。 An oil pan attached to the lower end of the crankcase of the engine, and a drain bolt,
The oil pan is
A recess formed by recessing the bottom part upward;
An inclined portion defining the recess;
A bolt hole provided in the inclined portion,
An oil pan apparatus configured to house the head of the drain bolt in the recess when the drain bolt is attached to the bolt hole. 前記凹部の頂部は、前記オイルパンの前記クランクケースとの取付面よりも高い位置に配置される
請求項１に記載のオイルパン装置。 The oil pan apparatus according to claim 1, wherein a top portion of the recess is disposed at a position higher than a mounting surface of the oil pan with the crankcase. 前記凹部は、上方に向けて断面山形に形成される
請求項１または２に記載のオイルパン装置。 The oil pan apparatus according to claim 1, wherein the concave portion is formed in a mountain-shaped cross section upward.
JP2015222131A 2015-11-12 2015-11-12 Oil pan equipment Active JP6661984B2 (en)

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Application Number Priority Date Filing Date Title
JP2015222131A JP6661984B2 (en) 2015-11-12 2015-11-12 Oil pan equipment
EP16864363.3A EP3375992B1 (en) 2015-11-12 2016-11-11 Oil pan device
CN201680065886.5A CN108350774B (en) 2015-11-12 2016-11-11 Oil pan device
PCT/JP2016/083560 WO2017082402A1 (en) 2015-11-12 2016-11-11 Oil pan device
US15/775,204 US20180355772A1 (en) 2015-11-12 2016-11-11 Oil pan device

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JP2009236091A (en) * 2008-03-28 2009-10-15 Mazda Motor Corp Sound insulating device for vehicle engine
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