JPH0988540A - Oil trapper for internal combustion engine - Google Patents
Oil trapper for internal combustion engineInfo
- Publication number
- JPH0988540A JPH0988540A JP26489595A JP26489595A JPH0988540A JP H0988540 A JPH0988540 A JP H0988540A JP 26489595 A JP26489595 A JP 26489595A JP 26489595 A JP26489595 A JP 26489595A JP H0988540 A JPH0988540 A JP H0988540A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- internal combustion
- combustion engine
- trapper
- opened
- 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
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、内燃機関用オイル
トラッパに関し、特にブローバイガス還元装置に供しブ
ローバイガス内のオイルミストを分離するサイクロン式
のオイルトラッパに係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil trapper for an internal combustion engine, and more particularly to a cyclone type oil trapper which is supplied to a blowby gas reducing device to separate oil mist in blowby gas.
【0002】[0002]
【従来の技術】内燃機関のクランクケース内には、燃焼
室から漏洩するブローバイガスが存在し、そのガス成分
によってエンジンオイルの劣化等を惹起するため、ブロ
ーバイガスを吸気系に戻し燃焼室内で再燃焼させるブロ
ーバイガス還元装置が用いられている。この装置は、例
えばクランクケースとエアクリーナをホースで連通する
シールドシステムとPCV(Posittive Crankcase Vent
ilation:即ち、クランクケースの強制換気)、バルブ
を介してクランクケースと吸気系を連通し、吸気負圧に
よってブローバイガスを流量制御しつつ強制的にクラン
クケースを換気するPCVシステムに大別される。2. Description of the Related Art In a crankcase of an internal combustion engine, blow-by gas leaking from a combustion chamber is present, and the gas component causes deterioration of engine oil and the like. A blow-by gas reducing device for burning is used. This device is, for example, a shield system that connects a crankcase and an air cleaner with a hose and a PCV (Posittive Crankcase Vent).
ilation: That is, forced ventilation of the crankcase), which is roughly classified into a PCV system in which the crankcase and the intake system are communicated with each other via a valve, and the blowby gas is controlled by the negative pressure of the intake while the crankcase is forcibly ventilated. .
【0003】上記ブローバイガス中には、エンジンオイ
ルが霧化したオイルミストが存在するので、そのままの
状態では再燃焼に適さず、またエンジンオイルの消費量
が増大することとなる。このため、ブローバイガスを吸
気系に戻す前に、ブローバイガス中のオイルミストを分
離する必要があり、オイルトラッパ、オイルセパレータ
等と呼ばれる油滴分離装置が設けられている。このよう
なオイルトラッパとしては、種々の方式のものが知られ
ているが、エンジンブロックの外側に装着する外付型の
オイルトラッパ(図5に示す)と、シリンダヘッドカバ
ー内に収容する内蔵型のオイルトラッパ(図示せず)が
知られている。Since the blow-by gas contains an oil mist in which the engine oil is atomized, it is not suitable for re-combustion as it is, and the engine oil consumption increases. For this reason, before returning the blow-by gas to the intake system, it is necessary to separate the oil mist in the blow-by gas, and an oil droplet separating device called an oil trapper, an oil separator or the like is provided. As such an oil trapper, various types are known, but an external oil trapper (shown in FIG. 5) mounted on the outside of the engine block and a built-in oil trapper housed in the cylinder head cover. A type of oil trapper (not shown) is known.
【0004】上記のオイルトラッパとして、所謂サイク
ロン式と呼ばれる方式のトラッパが普及している。これ
は、例えば図5に示すように構成されており、ブローバ
イガスが入口ポートIPからサイクロン室(遠心分離
室)CCに導入され、旋回運動をしながら中央部の出口
通路OPからホースHCを介して室外に排出され、内燃
機関用の吸気系に吸引される。このとき、ブローバイガ
ス中のオイルミストは、旋回運動時に生ずる遠心力によ
って分離され、サイクロン室CCの壁面に沿ってオイル
溜室に集められる。As the above oil trapper, a so-called cyclone type trapper is widely used. This is configured, for example, as shown in FIG. 5, in which blow-by gas is introduced from the inlet port IP into the cyclone chamber (centrifugal chamber) CC, and while making a swirling motion, it passes through the hose HC from the outlet passage OP in the central portion. Are discharged to the outside of the room and sucked into the intake system for the internal combustion engine. At this time, the oil mist in the blow-by gas is separated by the centrifugal force generated during the swirling motion, and is collected in the oil reservoir chamber along the wall surface of the cyclone chamber CC.
【0005】[0005]
【発明が解決しようとする課題】然し乍ら、サイクロン
室CCの一方の開口端とホースの連結部において、死角
なる部分Dが存在し、オイルは粘性があるためDに滞留
してしまい、オイルがスムーズにオイル溜室に流れない
といった現象が発生する。However, there is a dead area D at the connecting portion between the one end of the cyclone chamber CC and the hose, and the oil is viscous and stays at D, so that the oil is smooth. The phenomenon that the oil does not flow into the oil reservoir occurs.
【0006】そこで本発明は、オイルの滞留を防止し、
サイクロン本体からオイル溜室にオイルをスムーズに行
え、汎用のホースがそのまま使用できる等のコスト的に
有利な簡便な構造を有する内燃機関用オイルとラッパを
提供することを目的とする。Therefore, the present invention prevents the accumulation of oil,
An object of the present invention is to provide an internal combustion engine oil and a trumpet having a simple structure that is advantageous in terms of cost, such that oil can be smoothly transferred from the cyclone body to the oil reservoir and a general-purpose hose can be used as it is.
【0007】[0007]
【課題を解決するための手段】上記の目的を達成するた
め、内側に円筒面を有し分離室を郭成すると共に一方側
に先端に近づくにつれて内径が大となるようにテーパー
部が形成された開口部を備えた第1の筒体と、両端に開
口部を有し前記第1の筒体内に一方の開口部が開口し他
方の開口部が前記第1の筒体外に開口するように配置す
る第2の筒体と、第2の筒体の一方の開口部近傍で円筒
面の接線方向に開口するように前記第1の筒体に入口ポ
ートを形成した入口管を備えた内燃機関用オイルトラッ
パとした。In order to achieve the above object, a tapered portion is formed so as to have a cylindrical surface on the inside to define a separation chamber and to increase the inner diameter toward one end toward the tip. A first cylinder having an opening and an opening at each end so that one opening is open in the first cylinder and the other opening is open outside the first cylinder. An internal combustion engine including a second tubular body to be arranged and an inlet pipe in which an inlet port is formed in the first tubular body so as to open in a tangential direction of a cylindrical surface near one opening of the second tubular body. It was used as an oil trapper.
【0008】而して、本発明の内燃機関用オイルトラッ
パにおいては、第1の筒体の一方側の開口端にテーパー
が形成されているため、開口端とホースとの間にできる
死角が少なくなる。これにより、分離室でブローバイガ
スから分離されたオイルはスムーズにオイル溜室に還元
されることとなる。Thus, in the oil trapper for an internal combustion engine of the present invention, since the taper is formed at the opening end on one side of the first cylindrical body, there is a blind spot formed between the opening end and the hose. Less. As a result, the oil separated from the blow-by gas in the separation chamber is smoothly returned to the oil storage chamber.
【0009】[0009]
【発明の実施の形態】以下、本発明の内燃機関用オイル
トラッパの望ましい実施例を図面を参照して説明する。
図1および図2は、本発明の一実施例に係わり、エンジ
ンブロック外付型のオイルトラッパを示すもので、図2
に示すように例えば合成樹脂製の二部品が組み合わされ
てなる。即ち、本発明にいう第1の筒体を含む本体1
と、本発明にいう第2の筒体を含む出口管2とからな
り、本体1内に出口管2の一部が延出した状態で両者が
接合される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an oil trapper for an internal combustion engine of the present invention will be described below with reference to the drawings.
1 and 2 relate to an embodiment of the present invention and show an oil trapper of an external engine block type.
As shown in, for example, two parts made of synthetic resin are combined. That is, the main body 1 including the first cylindrical body according to the present invention
And the outlet pipe 2 including the second cylindrical body according to the present invention, and the two are joined in a state where a part of the outlet pipe 2 extends into the main body 1.
【0010】本体1は略円柱体で、一方の開口端が小径
で排出口1aとされ、他方の開口端1bが大径に形成さ
れている。排出口1aは、先端に向かうほど内径が拡大
するようにテーパー1gが形成されている。また、一方
の開口端1aと他方の開口端1bとの間にもテーパ部1
cが形成されている。本体1の開口端1bは径方向に延
出しフランジ部1fが形成されている。また、開口端1
b側には、入口管5が本体と一体的に形成されており、
本体1の内側円筒面の接線方向に入口ポート5aが開口
している。The main body 1 is a substantially cylindrical body, and one opening end has a small diameter and serves as a discharge port 1a, and the other opening end 1b has a large diameter. The discharge port 1a is formed with a taper 1g so that the inner diameter increases toward the tip. Further, the taper portion 1 is also provided between the one opening end 1a and the other opening end 1b.
c is formed. The opening end 1b of the main body 1 is formed with a flange portion 1f extending in the radial direction. Also, the open end 1
The inlet pipe 5 is formed integrally with the main body on the b side,
The inlet port 5a opens in the tangential direction of the inner cylindrical surface of the main body 1.
【0011】一方、出口管2は、図2に示すように、中
間部に鍔部3が一体に形成された円筒体である。鍔部3
は、フランジ部3fを有し、これが本体1のフランジ部
1fに密着して接合される。図1に示すように出口管2
内には、開口端2a側で開口し開口端2bの内径より大
の内径の円筒部2c並びに第1および第2のテーパ部2
d,2eが形成されており、これらによって拡大内径部
12が形成されている。On the other hand, as shown in FIG. 2, the outlet pipe 2 is a cylindrical body integrally formed with a collar portion 3 at an intermediate portion. Collar 3
Has a flange portion 3f, which is in close contact with and joined to the flange portion 1f of the main body 1. As shown in FIG. 1, the outlet pipe 2
Inside, a cylindrical portion 2c having an inner diameter larger than the inner diameter of the opening end 2b and opened on the side of the opening end 2a, and the first and second tapered portions 2
d and 2e are formed, and the enlarged inner diameter portion 12 is formed by these.
【0012】而して、本体1に出口管2が接合される
と、本体1内の排出口1a側に分離室11が郭成され、
分離室11は入口管5および出口管2を介して夫々内燃
機関のクランクケース(図示せず)および吸気系(図示
せず)に連通接続され、排出口1aを介して外部のオイ
ル溜室(図示せず)に連通するように構成される。本実
施例においては、入口管5および出口管2および排出口
1aには、夫々ホース13,14,15が接続されてい
る。When the outlet pipe 2 is joined to the main body 1, a separation chamber 11 is formed inside the main body 1 on the side of the outlet 1a,
The separation chamber 11 is connected to a crankcase (not shown) and an intake system (not shown) of the internal combustion engine through an inlet pipe 5 and an outlet pipe 2, respectively, and is connected to an external oil storage chamber ( (Not shown). In this embodiment, hoses 13, 14 and 15 are connected to the inlet pipe 5, the outlet pipe 2 and the discharge port 1a, respectively.
【0013】上記の構成になる本実施例のオイルトラッ
パは、入口管5がホース14を介して内燃機関のクラン
クケース(図示せず)に連結されるとと共に、出口管2
の開口端2b側がホース13を介して内燃機関の吸気系
(図示せず)に連通接続される。そして、クランクケー
ス内のブローバイガスが入口ポート5aから分離室11
内に接線方向に導入され、同室内で旋回運動をしながら
出口管2の開口端2aから内径部2fを介して開口端2
bから排出され、内燃機関の吸気系に吸引される。この
時の旋回運動によりブローバイガス中のオイルミストに
遠心力が加わり、分離室11の内壁面に沿って分離さ
れ、分離オイルは、排出口1aから下方に排出されホー
ス15を介してオイル溜室(図示せず)に還元される。In the oil trapper of the present embodiment having the above-mentioned structure, the inlet pipe 5 is connected to the crankcase (not shown) of the internal combustion engine via the hose 14, and the outlet pipe 2
The open end 2b side is connected to an intake system (not shown) of the internal combustion engine through a hose 13. Then, the blow-by gas in the crankcase is separated from the inlet port 5a into the separation chamber 11
Is introduced in a tangential direction into the inside of the chamber, and the swirling motion is performed in the same chamber.
and is sucked into the intake system of the internal combustion engine. A centrifugal force is applied to the oil mist in the blow-by gas by the swirling motion at this time, and the oil mist is separated along the inner wall surface of the separation chamber 11, and the separated oil is discharged downward from the discharge port 1a and the oil reservoir chamber via the hose 15. (Not shown).
【0014】この場合において、排出口1aには先端に
向かう程内径が拡大するようにテーパー1gが形成され
ているため、排出口1aとホース15との接合部には、
死角が殆ど生じない。従って分離室11で分離されたオ
イルは、排出口1aとホース14の接合部分にオイルが
滞留することなくスムーズにオイル溜室に導かれる。In this case, since the discharge port 1a is formed with a taper 1g so that the inner diameter increases toward the tip, the joint between the discharge port 1a and the hose 15 is
There is almost no blind spot. Therefore, the oil separated in the separation chamber 11 is smoothly guided to the oil storage chamber without the oil remaining at the joint between the discharge port 1a and the hose 14.
【0015】[0015]
【発明の効果】本発明は上述のように構成されているた
め以下に記載される効果を奏する。即ち、本発明の内燃
機関用オイルトラッパは、第1の筒体の一方に開口する
排出口に先端にいく程内径が拡大するようにテーパーを
形成したため、排出口に接続するホースとの間にオイル
が滞留する死角が殆ど発生しないため、分離室からオイ
ル溜室にオイルをスムーズに導くことができる。また、
汎用のホースがそのまま使用できる等、格別な構造、設
備を提供することがないため、コスト的に有利で簡便な
構造をとることができる。Since the present invention is configured as described above, it has the following effects. That is, in the oil trapper for an internal combustion engine of the present invention, a taper is formed in the discharge port that is opened in one of the first cylinders so that the inner diameter increases toward the tip. Since there is almost no blind spot where the oil stays, the oil can be smoothly guided from the separation chamber to the oil reservoir. Also,
Since a general-purpose hose can be used as it is without providing a special structure and equipment, a cost-effective and simple structure can be adopted.
【図1】本発明の一実施例に係わる内燃機関用オイルト
ラッパの縦断面図である。FIG. 1 is a vertical cross-sectional view of an oil trapper for an internal combustion engine according to an embodiment of the present invention.
【図2】本発明の一実施例に係わる内燃機関用オイルト
ラッパの分解斜視図である。FIG. 2 is an exploded perspective view of an oil trapper for an internal combustion engine according to an embodiment of the present invention.
【図3】従来のサイクロン式オイルトラッパの概略構成
図である。FIG. 3 is a schematic configuration diagram of a conventional cyclone type oil trapper.
【図4】従来のサイクロン式オイルトラッパの排出口と
ホースとの接続構造を示す部分縦断面図である。FIG. 4 is a partial vertical cross-sectional view showing a connection structure between a discharge port and a hose of a conventional cyclone type oil trapper.
1 本体(第1の筒体) 1a 排出口 1g テーパ部 2 出口管(第2の筒体) 5 入口管 11 分離室 DESCRIPTION OF SYMBOLS 1 Main body (1st cylinder) 1a Discharge port 1g Tapered part 2 Exit pipe (2nd cylinder) 5 Inlet pipe 11 Separation chamber
Claims (1)
共に一方側に先端に近づくにつれて内径が大となるよう
にテーパー部が形成された開口部を備えた第1の筒体
と、両端に開口部を有し前記第1の筒体内に一方の開口
部が開口し他方の開口部が前記第1の筒体外に開口する
ように配置する第2の筒体と、第2の筒体の一方の開口
部近傍で円筒面の接線方向に開口するように前記第1の
筒体に入口ポートを形成した入口管を備えたことを特徴
とする内燃機関用オイルトラッパ。1. A first tubular body having a cylindrical surface on the inner side to define a separation chamber, and an opening having a tapered portion formed on one side so that the inner diameter increases toward the tip. A second tubular body having openings at both ends and arranged so that one opening is opened in the first tubular body and the other opening is opened outside the first tubular body; An oil trapper for an internal combustion engine, comprising: an inlet pipe having an inlet port formed in the first cylinder so as to open in a tangential direction of a cylindrical surface near one opening of the cylinder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7264895A JP2975291B2 (en) | 1995-09-18 | 1995-09-18 | Oil trapper for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7264895A JP2975291B2 (en) | 1995-09-18 | 1995-09-18 | Oil trapper for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0988540A true JPH0988540A (en) | 1997-03-31 |
JP2975291B2 JP2975291B2 (en) | 1999-11-10 |
Family
ID=17409721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7264895A Expired - Fee Related JP2975291B2 (en) | 1995-09-18 | 1995-09-18 | Oil trapper for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2975291B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015122438A1 (en) * | 2014-02-12 | 2015-08-20 | 株式会社 ニフコ | Blow-by heater |
CN108301935A (en) * | 2018-03-28 | 2018-07-20 | 潍柴动力股份有限公司 | Oil separator case and diesel vehicle |
-
1995
- 1995-09-18 JP JP7264895A patent/JP2975291B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015122438A1 (en) * | 2014-02-12 | 2015-08-20 | 株式会社 ニフコ | Blow-by heater |
JPWO2015122438A1 (en) * | 2014-02-12 | 2017-03-30 | 株式会社ニフコ | Blow-by heater |
US10066523B2 (en) | 2014-02-12 | 2018-09-04 | Nifco Inc. | Blow-by heater |
CN108301935A (en) * | 2018-03-28 | 2018-07-20 | 潍柴动力股份有限公司 | Oil separator case and diesel vehicle |
CN108301935B (en) * | 2018-03-28 | 2024-02-20 | 潍柴动力股份有限公司 | Oil-gas separator shell and diesel vehicle |
Also Published As
Publication number | Publication date |
---|---|
JP2975291B2 (en) | 1999-11-10 |
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