JPH08246837A - Blow-by gas processing device - Google Patents
Blow-by gas processing deviceInfo
- Publication number
- JPH08246837A JPH08246837A JP5605395A JP5605395A JPH08246837A JP H08246837 A JPH08246837 A JP H08246837A JP 5605395 A JP5605395 A JP 5605395A JP 5605395 A JP5605395 A JP 5605395A JP H08246837 A JPH08246837 A JP H08246837A
- Authority
- JP
- Japan
- Prior art keywords
- blow
- gas
- intake pipe
- pipe
- icing
- 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.)
- Pending
Links
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ブローバイガスを燃焼
室に還流して燃焼処理をするブローバイガス処理装置の
改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a blow-by gas processing apparatus for returning blow-by gas to a combustion chamber for combustion processing.
【０００２】[0002]
【従来の技術】従来、ディーゼルエンジンにおいては、
ブローバイガスはクランクケース内からオイルセパレー
タを通し、油分を除いて大気解放していた。しかしなが
ら近来にあっては特に乗用車用ディーゼルエンジンで
は、ブローバイガスを吸気側に吸入させるクローズ式が
多くなっている。図５に示すように、この種のブローバ
イガス処理装置（ＰＶＣシステム）１は、ブローバイガ
ス２をヘッドカバー３内に導いた後、その上部に設けら
れたバルブ４により流量を調節して、ホースにより吸気
管（インテークパイプ）５に吸入させるようになってい
る。2. Description of the Related Art Conventionally, in diesel engines,
The blow-by gas was passed through the oil separator from the inside of the crankcase to remove the oil and was released to the atmosphere. However, in recent years, especially in diesel engines for passenger cars, there are many closed-type engines that suck blow-by gas into the intake side. As shown in FIG. 5, in this type of blow-by gas treatment device (PVC system) 1, after introducing the blow-by gas 2 into the head cover 3, the flow rate is adjusted by a valve 4 provided above the blow-by gas 2 and a hose is used. The intake pipe (intake pipe) 5 is made to suck.
【０００３】[0003]
【発明が解決しようとする課題】ところでブローバイガ
ス２は、燃焼で発生した水分を多量に含んでいるため、
冬期において外気温が氷点下になった場合、ホース６を
流れてきたブローバイガス２が吸気管５内に放出される
箇所で氷結し、ホース６を閉塞させてしまうという問題
があった。これは図６に示すようにホース６がゴム等で
成形されていても、吸気管５が金属で成形されていた場
合や、図７に示すように吸気管７はゴムで成形されてい
るが、金属製の接続口８が一体成形され、ホース６と接
続されている場合などにホース６中を流れてきたブロー
バイガス中の水蒸気が冷えている金属と接触して氷とな
るためである。金属は着水性が強い為、多少のエンジン
振動では剥離されず、次第に生長してしまう。このよう
にブローバイガスのホース６が閉塞するとエンジン内の
圧力が上昇し、オイルレベルゲージの抜出しやオイル飛
散，クランクオイルシール部（図示せず）からのオイル
洩れ等の問題が発生してしまう。By the way, since the blow-by gas 2 contains a large amount of water generated by combustion,
When the outside air temperature is below freezing in winter, there is a problem that the blow-by gas 2 flowing through the hose 6 is frozen at a location where it is discharged into the intake pipe 5, and the hose 6 is blocked. This is because even if the hose 6 is made of rubber or the like as shown in FIG. 6, the intake pipe 5 is made of metal, or the intake pipe 7 is made of rubber as shown in FIG. This is because, when the metal connection port 8 is integrally formed and is connected to the hose 6, water vapor in the blow-by gas flowing in the hose 6 comes into contact with cold metal to form ice. Since metal has a strong water contact property, it will not be peeled off by some engine vibration and will gradually grow. When the blow-by gas hose 6 is blocked in this way, the pressure inside the engine rises, and problems such as oil level gauge withdrawal, oil scattering, and oil leakage from a crank oil seal portion (not shown) occur.
【０００４】そこで、本発明の目的は、上記課題を解決
し、氷結によるブローバイガス通路の閉塞を防止できる
ブローバイガス処理装置を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a blow-by gas treatment apparatus capable of preventing the blow-by gas passage from being blocked due to freezing.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明は、ブローバイガスを導くガス管路を吸気管に
接続すると共に、吸気管との接続部に、熱伝導率が低
く、氷が剥離しやすい材料で形成された内壁部を設けた
ものである。内壁部は、吸気管の接続口に挿着された管
体で成るものであってよい。この管体は、吸気管内に適
宜延出されたものであることが好ましい。また、内壁部
は、接続部の内面に積層された被覆層で成るものであっ
てよい。In order to achieve the above object, the present invention is to connect a gas conduit for introducing blow-by gas to an intake pipe and to connect the intake pipe with low thermal conductivity and Is provided with an inner wall portion formed of a material that is easily peeled off. The inner wall portion may be made of a tubular body inserted into the connection port of the intake pipe. It is preferable that the tubular body is appropriately extended into the intake pipe. Further, the inner wall portion may be formed of a coating layer laminated on the inner surface of the connection portion.
【０００６】[0006]
【作用】ブローバイガスはガス管路により吸気管との接
続部まで導かれる。この接続部には熱伝導率が低く、氷
が剥離しやすい材料でなる内壁部が設けられているの
で、ブローバイガスは、ガス中の水分が氷結することな
く吸気に合流する。[Function] The blow-by gas is guided to the connection portion with the intake pipe by the gas pipeline. Since the inner wall portion made of a material having low thermal conductivity and easily peeling off ice is provided at this connection portion, the blow-by gas joins the intake air without water in the gas being frozen.
【０００７】[0007]
【実施例】以下、本発明の一実施例を添付図面に基づい
て詳述する。An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
【０００８】図１及び図２は、本発明に係わるブローバ
イガス処理装置１０の一実施例を示したものである。こ
のブローバイガス処理装置１０は、ブローバイガスのガ
ス管路２５を構成するＰＣＶホース１３の吸気管１４と
の接続部１１に、内壁部２３たる防氷パイプ１２が設け
られてなるものである。1 and 2 show an embodiment of a blow-by gas processing apparatus 10 according to the present invention. The blow-by gas processing apparatus 10 is provided with an anti-ice pipe 12 as an inner wall portion 23 at a connection portion 11 of a PCV hose 13 that constitutes a gas pipeline 25 for blow-by gas with an intake pipe 14.
【０００９】ＰＣＶホース１３は、ゴム，プラスチック
等の熱伝導率の低い、弾力性のある材料からなる。吸気
管１４は、接続部１１の強度を得るため金属等の硬い材
料からなり、その側面にはＰＣＶホース１３に接続する
ための接続口１５が設けられている。この接続口１５の
内径は、吸気管１４を流れる吸気１６がブローバイガス
１７を押し戻して逆流しないように吸気管１４の内径よ
りも十分に小さく形成されている。そして、この接続口
１５の先端部にはＰＣＶホース１３が外れるのを防止す
る拡径部１８が設けられ、その先端はＰＣＶホース１３
に傷をつけないように内側に丸め込まれている。この接
続口１５はＰＣＶホース１３内に挿嵌され、ホース端の
弾力により容易に離れないように接続されている。The PCV hose 13 is made of an elastic material having a low thermal conductivity such as rubber or plastic. The intake pipe 14 is made of a hard material such as metal in order to obtain the strength of the connection portion 11, and a side surface thereof is provided with a connection port 15 for connecting to the PCV hose 13. The inner diameter of the connection port 15 is formed sufficiently smaller than the inner diameter of the intake pipe 14 so that the intake air 16 flowing through the intake pipe 14 pushes back the blow-by gas 17 and does not flow backward. An expanded diameter portion 18 for preventing the PCV hose 13 from coming off is provided at the tip end of the connection port 15, and the tip end thereof has the PCV hose 13
It is rounded inside so as not to scratch. The connection port 15 is inserted into the PCV hose 13 and connected so as not to be easily separated by the elasticity of the hose end.
【００１０】防氷パイプ１２は、ナイロン，テフロン，
アクリル等の熱伝導率が低く、氷結した氷が剥がれやす
い材料からなる管体であり、吸気管１４の接続口１５内
面に嵌合されている。この防氷パイプ１２の一端部に
は、接続口１５の開口端部１９に係合するつば部２０が
設けられ、接続口１５の拡径部１８をブローバイガス１
７から隔離している。そして防氷パイプ１２の先端部２
６は、吸気管１４内に１０ｍｍ程度延出されている。The anti-icing pipe 12 is made of nylon, Teflon,
It is a tube body made of a material such as acrylic having a low thermal conductivity and easily freezing frozen ice, and is fitted to the inner surface of the connection port 15 of the intake pipe 14. At one end of the anti-icing pipe 12, a collar portion 20 that engages with the opening end portion 19 of the connection opening 15 is provided, and the expanded diameter portion 18 of the connection opening 15 is connected to the blowby gas 1
Separated from 7. And the tip 2 of the anti-icing pipe 12
6 extends into the intake pipe 14 by about 10 mm.
【００１１】次に本実施例の作用を述べる。Next, the operation of this embodiment will be described.
【００１２】水分を含むブローバイガス１７は、ＰＣＶ
ホース１３を経て防氷パイプ１２の入り口に至る。この
ブローバイガス１７の流れは、防氷パイプ１２を流れの
方向すなわち吸気管１４に向けて押し流そうとするが、
防氷パイプ１２の一端にはつば部２０が設けられ、接続
口１５の開口端部１９に係合しているため、防氷パイプ
１２は動くことはない。そして、ブローバイガス１７の
流れは防氷パイプ１２の内部空間２１に至る。冬期にあ
っては、この防氷パイプ１２の内部空間２１は、吸気管
１４を流れる冷たい吸気１６の影響で冷たくなっている
ため、ブローバイガス１７中の水分が結露し始める。し
かし、防氷パイプ１２はナイロン，テフロン、アクリル
等の熱伝導率の低く、氷の剥がれやすい材料からなるた
め、水分は防氷パイプ１２内に氷結せずにブローバイガ
ス１７の流れにより防氷パイプ１２の先端部２６に至
る。The blow-by gas 17 containing water is PCV.
The hose 13 leads to the entrance of the anti-icing pipe 12. The flow of the blow-by gas 17 tries to push the anti-icing pipe 12 toward the flow direction, that is, toward the intake pipe 14,
Since the flange portion 20 is provided at one end of the anti-icing pipe 12 and engages with the opening end portion 19 of the connection port 15, the anti-icing pipe 12 does not move. Then, the flow of the blow-by gas 17 reaches the internal space 21 of the anti-icing pipe 12. In the winter season, the internal space 21 of the anti-icing pipe 12 is cold due to the cold intake air 16 flowing through the intake pipe 14, so that the moisture in the blow-by gas 17 starts to condense. However, since the anti-icing pipe 12 is made of a material such as nylon, Teflon, or acrylic, which has a low thermal conductivity and easily peels off ice, moisture does not freeze inside the anti-icing pipe 12 and the flow of the blow-by gas 17 causes the anti-icing pipe to flow. 12 to the tip portion 26.
【００１３】この防氷パイプ１２の先端部２６では、ブ
ローバイガス１７の流れとは別に吸気１６の流れがあ
り、ブローバイガス１７は吸気１６に合流する。この
際、水分は吸気１６の流れの方向に力を受けるが、防氷
パイプ１２の先端部２６は吸気管１４の内部に延出され
ているために伝って流れる場所がなく、先端部２６に水
滴２２を形成する。この水滴２２は、そのまま吸気管１
４の中に落ちるか、あるいは、冷たい吸気に冷やされ氷
となって吸気管１４の中に転がり落ちる。At the tip portion 26 of the anti-icing pipe 12, there is a flow of intake air 16 separately from the flow of blow-by gas 17, and the blow-by gas 17 joins the intake air 16. At this time, the water receives a force in the direction of the flow of the intake air 16, but since the tip end portion 26 of the anti-icing pipe 12 is extended inside the intake pipe 14, there is no place for it to flow and the tip end portion 26 is Water droplets 22 are formed. The water droplets 22 are, as they are, the intake pipe 1
4 or fall into the intake pipe 14 as ice when cooled by cold intake air.
【００１４】また防氷パイプ１２の組み付けは、防氷パ
イプ１２を接続口１５の内部に嵌め込んで行う。この
時、防氷パイプ１２のつば部２０が接続口１５の開口端
部１９に当たるまで防氷パイプ１２を吸気管１４の中心
に向けて押し込む。そして、ＰＣＶホース１３の内部に
接続口１５が収まるようにＰＣＶホース１３を接続口１
５に押し嵌めて接続する。The assembling of the anti-icing pipe 12 is carried out by fitting the anti-icing pipe 12 inside the connection port 15. At this time, the anti-icing pipe 12 is pushed toward the center of the intake pipe 14 until the flange portion 20 of the anti-icing pipe 12 contacts the opening end 19 of the connection port 15. Then, the PCV hose 13 is connected to the connection port 1 so that the connection port 15 fits inside the PCV hose 13.
Connect by pressing into 5.
【００１５】このように、吸気管１４の接続口１５内面
にナイロン，テフロン，アクリル等の熱伝導率の低く、
氷結した氷の剥がれやすい材料からなる防氷パイプ１２
を設けたので、ブローバイガス１７中の水分が吸気管１
４の接続口１５の内面に氷結してブローバイガス処理装
置１０が閉塞するのを防ぐことができる。Thus, the inner surface of the connection port 15 of the intake pipe 14 has a low thermal conductivity of nylon, Teflon, acrylic or the like,
Anti-icing pipe 12 made of a material that easily separates frozen ice
Since the blow-by gas 17 contains water, the intake pipe 1
It is possible to prevent the blow-by gas processing device 10 from being blocked by icing on the inner surface of the connection port 15 of No. 4.
【００１６】また、防氷パイプ１２の後端部２６を吸気
管１４内に延出させたので、吸気管１４の内面にブロー
バイガス１７中の水分が氷結し生長するのを防ぐことが
できる。そして防氷パイプ１２を吸気管１４の接続口１
５内面に嵌合させたので、既存のブローバイガス処理装
置にも容易かつ安価にて取り付けることができる。ま
た、防氷パイプ１２の一端につば部２０を設けたので、
接続口１５の拡径部１８にブローバイガス１７中の水分
が氷結するのを防ぐことができる。Further, since the rear end portion 26 of the anti-icing pipe 12 is extended into the intake pipe 14, it is possible to prevent the moisture in the blow-by gas 17 from freezing and growing on the inner surface of the intake pipe 14. Then, connect the anti-icing pipe 12 to the connection port 1 of the intake pipe 14.
Since it is fitted to the inner surface of the No. 5, it can be easily and inexpensively attached to the existing blow-by gas processing apparatus. Since the brim portion 20 is provided at one end of the anti-icing pipe 12,
It is possible to prevent the moisture in the blow-by gas 17 from being frozen in the expanded diameter portion 18 of the connection port 15.
【００１７】なお、図３に示すように、その先端部４１
を吸気管内１４に延出させない、接続口１５の内面全て
を覆うだけの防氷パイプ４２を設けるようにしてもよ
い。この場合、ブローバイガス１７中の水分が結露して
吸気管１４の内面に氷結することはあるが、前記実施例
と同様にガス管路２５が閉塞するのを防ぐことができ
る。但し先端部４１が、吸気管１４の内面よりも後退し
た短い防氷パイプとすると、ブローバイガス中の水分が
その部分で氷結を始めるため、防氷効果は損なわれるの
で、注意を要する。Incidentally, as shown in FIG.
It is also possible to provide an anti-icing pipe 42 that does not extend into the intake pipe interior 14 and only covers the entire inner surface of the connection port 15. In this case, although water in the blow-by gas 17 may condense and freeze on the inner surface of the intake pipe 14, it is possible to prevent the gas pipe line 25 from being blocked as in the above-described embodiment. However, if the tip portion 41 is a short anti-icing pipe that recedes from the inner surface of the intake pipe 14, moisture in the blow-by gas begins to freeze at that portion, and the anti-icing effect is impaired, so caution is required.
【００１８】図４は、本発明の他の実施例を示したもの
である。この実施例の内壁部２３は、金属でなる吸気管
５の接続口８の内面に、ナイロン，テフロン，アクリル
等の熱伝導率の低く、氷結した氷の剥がれやすい材料を
積層して被覆層２４としたものである。この被覆層２４
は、十分に防氷効果を発揮するのに必要な厚さに形成さ
れている。この構成によれば、接続口１５の内面の氷結
が防止できると共に、部品点数の増加がないため、従来
の生産ラインをそのまま使用することができ、容易かつ
安価にて構成することができる。FIG. 4 shows another embodiment of the present invention. The inner wall portion 23 of this embodiment is a coating layer 24 formed by laminating a material such as nylon, Teflon, or acrylic, which has a low thermal conductivity and is easily peeled off of frozen ice, on the inner surface of the connection port 8 of the intake pipe 5 made of metal. It is what This coating layer 24
Is formed to a thickness necessary to sufficiently exert the anti-icing effect. According to this configuration, the inner surface of the connection port 15 can be prevented from freezing, and the number of parts does not increase. Therefore, the conventional production line can be used as it is, and the configuration can be configured easily and at low cost.
【００１９】なお、図１あるいは図３の構成において、
ＰＣＶホース１３の端部と防氷パイプ１２，４２を一体
的に成形して、その間のスリットに吸気管１４の接続口
１５を差し込むようにしてもよい。In the structure shown in FIG. 1 or 3,
The end portion of the PCV hose 13 and the anti-icing pipes 12 and 42 may be integrally formed, and the connection port 15 of the intake pipe 14 may be inserted into the slit between them.
【００２０】[0020]
【発明の効果】以上要するに本発明によれば、ガス管路
の吸気管との接続部における氷結を防止でき、ブローバ
イガス環流機能を保全できるという優れた効果を発揮す
る。In summary, according to the present invention, it is possible to prevent the formation of ice in the connection portion of the gas pipeline with the intake pipe and to maintain the blow-by gas recirculation function.
【図１】本発明に係わるブローバイガス処理装置の一実
施例を示した断面図である。FIG. 1 is a sectional view showing an embodiment of a blow-by gas processing apparatus according to the present invention.
【図２】図１の要部を示した斜視図である。FIG. 2 is a perspective view showing a main part of FIG.
【図３】図１の変形実施例を示した断面図である。FIG. 3 is a sectional view showing a modified example of FIG.
【図４】本発明の他の実施例を示した断面図である。FIG. 4 is a sectional view showing another embodiment of the present invention.
【図５】従来のブローバイガス処理装置を示した断面図
である。FIG. 5 is a sectional view showing a conventional blow-by gas processing apparatus.
【図６】図５の要部を示した拡大図である。6 is an enlarged view showing a main part of FIG.
【図７】図６の他の従来例を示した断面図である。7 is a cross-sectional view showing another conventional example of FIG.
１０ ブローバイガス処理装置 １１ 接続部 １２ 防氷パイプ（管体） １７ ブローバイガス ２３ 内壁部 ２４ 被覆層 ２５ ガス管路 10 blow-by gas processing device 11 connection part 12 anti-icing pipe (tubular body) 17 blow-by gas 23 inner wall part 24 coating layer 25 gas pipeline
Claims (4)
に接続すると共に、該吸気管との接続部に、熱伝導率が
低く、氷が剥離しやすい材料で形成された内壁部を設け
たことを特徴とするブローバイガス処理装置。1. A gas pipeline for introducing blow-by gas is connected to an intake pipe, and an inner wall portion made of a material having low thermal conductivity and easily peeling off ice is provided at a connection portion with the intake pipe. A blow-by gas treatment device characterized in that
着された管体で成る請求項１記載のブローバイガス処理
装置。2. The blow-by gas treatment apparatus according to claim 1, wherein the inner wall portion is a pipe body inserted into a connection port of the intake pipe.
れた請求項２記載のブローバイガス処理装置。3. The blow-by gas processing apparatus according to claim 2, wherein the pipe body is appropriately extended into the intake pipe.
された被覆層で成る請求項１記載のブローバイガス処理
装置。4. The blow-by gas treatment apparatus according to claim 1, wherein the inner wall portion is a coating layer laminated on the inner surface of the connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5605395A JPH08246837A (en) | 1995-03-15 | 1995-03-15 | Blow-by gas processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5605395A JPH08246837A (en) | 1995-03-15 | 1995-03-15 | Blow-by gas processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08246837A true JPH08246837A (en) | 1996-09-24 |
Family
ID=13016349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5605395A Pending JPH08246837A (en) | 1995-03-15 | 1995-03-15 | Blow-by gas processing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08246837A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007224776A (en) * | 2006-02-22 | 2007-09-06 | Honda Motor Co Ltd | Engine with breather device |
| JP2007224755A (en) * | 2006-02-21 | 2007-09-06 | Honda Motor Co Ltd | Engine with breather device |
| JP2007263022A (en) * | 2006-03-29 | 2007-10-11 | Honda Motor Co Ltd | Engine with breather device |
| JP2007270744A (en) * | 2006-03-31 | 2007-10-18 | Nissan Diesel Motor Co Ltd | Breather device of liquid tank and exhaust emission control device for engine |
| US7328692B2 (en) | 2003-10-10 | 2008-02-12 | Nissan Motor Co., Ltd. | Intake device for internal combustion engine |
| KR100828746B1 (en) * | 2006-12-08 | 2008-05-09 | 현대자동차주식회사 | Icing protective device for positive crankcase ventilation |
| DE102011010289A1 (en) | 2011-02-03 | 2012-08-09 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Crankcase breather device for a motor vehicle |
| DE102013021983A1 (en) | 2013-12-20 | 2015-06-25 | Mtu Friedrichshafen Gmbh | A method for improving the cold start performance of an internal combustion engine and crankcase ventilation device thereto |
| CN105370454A (en) * | 2015-08-18 | 2016-03-02 | 上海汽车集团股份有限公司 | Anti-icing structure of PCV opening of escape pipe of air cleaner of air inlet system |
| JP2019210906A (en) * | 2018-06-07 | 2019-12-12 | 株式会社クボタ | Blow-by gas recirculation device |
| CN115773166A (en) * | 2022-11-29 | 2023-03-10 | 重庆长安汽车股份有限公司 | Structure and method for preventing crankcase ventilation pipeline from being frozen |
-
1995
- 1995-03-15 JP JP5605395A patent/JPH08246837A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7328692B2 (en) | 2003-10-10 | 2008-02-12 | Nissan Motor Co., Ltd. | Intake device for internal combustion engine |
| JP2007224755A (en) * | 2006-02-21 | 2007-09-06 | Honda Motor Co Ltd | Engine with breather device |
| JP4683486B2 (en) * | 2006-02-21 | 2011-05-18 | 本田技研工業株式会社 | Engine with breather device |
| JP2007224776A (en) * | 2006-02-22 | 2007-09-06 | Honda Motor Co Ltd | Engine with breather device |
| JP4683487B2 (en) * | 2006-02-22 | 2011-05-18 | 本田技研工業株式会社 | Engine with breather device |
| JP2007263022A (en) * | 2006-03-29 | 2007-10-11 | Honda Motor Co Ltd | Engine with breather device |
| JP2007270744A (en) * | 2006-03-31 | 2007-10-18 | Nissan Diesel Motor Co Ltd | Breather device of liquid tank and exhaust emission control device for engine |
| KR100828746B1 (en) * | 2006-12-08 | 2008-05-09 | 현대자동차주식회사 | Icing protective device for positive crankcase ventilation |
| DE102011010289A1 (en) | 2011-02-03 | 2012-08-09 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Crankcase breather device for a motor vehicle |
| US9261050B2 (en) | 2011-02-03 | 2016-02-16 | GM Global Technology Operations LLC | Crankcase ventilation device for a motor vehicle |
| DE102013021983A1 (en) | 2013-12-20 | 2015-06-25 | Mtu Friedrichshafen Gmbh | A method for improving the cold start performance of an internal combustion engine and crankcase ventilation device thereto |
| DE102013021983B4 (en) * | 2013-12-20 | 2016-03-24 | Mtu Friedrichshafen Gmbh | A method for improving the cold start property of an internal combustion engine and crankcase ventilation device thereto |
| US10184444B2 (en) | 2013-12-20 | 2019-01-22 | Mtu Friedrichshafen Gmbh | Method for improving the cold start capacity of an internal combustion engine, and crankcase ventilating device for this purpose |
| CN105370454A (en) * | 2015-08-18 | 2016-03-02 | 上海汽车集团股份有限公司 | Anti-icing structure of PCV opening of escape pipe of air cleaner of air inlet system |
| JP2019210906A (en) * | 2018-06-07 | 2019-12-12 | 株式会社クボタ | Blow-by gas recirculation device |
| CN115773166A (en) * | 2022-11-29 | 2023-03-10 | 重庆长安汽车股份有限公司 | Structure and method for preventing crankcase ventilation pipeline from being frozen |
| CN115773166B (en) * | 2022-11-29 | 2024-04-12 | 重庆长安汽车股份有限公司 | Structure and method for preventing crankcase ventilation pipeline from icing |
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