JPS6113716Y2 - - Google Patents
Info
- Publication number
- JPS6113716Y2 JPS6113716Y2 JP1981026680U JP2668081U JPS6113716Y2 JP S6113716 Y2 JPS6113716 Y2 JP S6113716Y2 JP 1981026680 U JP1981026680 U JP 1981026680U JP 2668081 U JP2668081 U JP 2668081U JP S6113716 Y2 JPS6113716 Y2 JP S6113716Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- engine
- supercharger
- lubricating
- passage
- 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
Links
- 230000001050 lubricating effect Effects 0.000 claims description 13
- 238000005461 lubrication Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 description 40
- 239000010687 lubricating oil Substances 0.000 description 25
- 238000001816 cooling Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】
本考案は、エンジンの排気ガスによりタービン
を駆動し、このタービンによりブロアを駆動して
吸気を加圧して吸気過給する過給機を備えたエン
ジン、特に過給機の回転軸を潤滑する潤滑装置の
改良に関する。[Detailed description of the invention] This invention is an engine equipped with a supercharger that uses engine exhaust gas to drive a turbine, which drives a blower to pressurize intake air and supercharge the intake air. This invention relates to an improvement in a lubricating device for lubricating a rotating shaft of a motor.
一般に、エンジンにより駆動されるオイルポン
プにより潤滑油を過給機の回転軸の軸受部（潤滑
部）に供給するようにした過給機の潤滑装置で
は、エンジンの停止と同時に、オイルポンプが停
止するのに対し、タービンが慣性である時間高速
で回転し続けるため、特にエンジンを高回転させ
た状態から急に停止するようにした場合には、潤
滑油が不足し、温度が急上昇していわゆる焼付き
を生ずる問題がある。 Generally, in a supercharger lubrication system that uses an oil pump driven by the engine to supply lubricating oil to the bearing (lubrication part) of the rotating shaft of the supercharger, the oil pump stops at the same time as the engine stops. On the other hand, since the turbine continues to rotate at high speed for a period of time due to inertia, especially when the engine is suddenly stopped from a high speed state, there is a lack of lubricating oil and the temperature suddenly rises, causing a problem called There is a problem of burn-in.
この問題に対処するため、従来より、オイル通
路圧力を検出してオイル通路の圧力が低下したと
きにはリターン通路を弁じ閉じるようにしたもの
（実開昭53−37807号公報）、あるいはオイル圧が
低下したときには、蓄圧タンク等の補助タンクか
ら潤滑油を過給機の潤滑部に供給するようにした
もの（特開昭48−85919号公報）が提案されてい
る。 To deal with this problem, conventional methods have been designed to detect oil passage pressure and close the return passage when the pressure in the oil passage decreases (Japanese Utility Model Publication No. 53-37807), or when the oil pressure decreases. In such a case, a system has been proposed in which lubricating oil is supplied to the lubricating section of the supercharger from an auxiliary tank such as a pressure accumulator tank (Japanese Patent Laid-Open No. 85919/1983).
しかしながら、前者のものは、潤滑部に潤滑油
が閉じ込まれるため、潤滑部の冷却が不完全とな
る問題があり、後者のものでは、冷却の問題は解
消しうるが、補助タンクやこれに切換えるための
切換系を別に設けなければならず、装置が複雑と
なつて高価となる難点がある。 However, the former type has the problem that the lubricating oil is trapped in the lubricating part, resulting in incomplete cooling of the lubricating part.The latter type can solve the cooling problem, but the auxiliary tank and A switching system must be separately provided for switching, which makes the device complicated and expensive.
特開昭48−88305号公報には、エンジンの通常
の運転時には過給機からの排出潤滑油は直ちにオ
イルパンに排出されるが、エンジンの停止時を含
むエンジンの回転数が低下した時には、過給機を
略等高に位置する大気と通断可能な浮子室を介し
てオイルパンに排出し、少なくとも過給機の潤滑
部に油圧を低下させた潤滑油を侵すようにしたこ
とにより、潤滑部の焼き付けを防止するものが提
案されている。しかしながら、このものは、大気
圧程度の低い圧力の潤滑油で過給機の潤滑部を侵
すにすぎないため、潤滑油の循環が必ずしも保証
されず、潤滑油の対流による潤滑油の炭化，劣化
のおれがあり、さらに、油圧の低下による軸受部
からの油洩れのおそれがあるうえ、潤滑部と略等
高の浮子室を設ける必要があるため、過給機全体
の大型化が避けられず、レイアウト上も不利なも
のとなるといつた問題がある。 Japanese Patent Application Laid-Open No. 48-88305 states that during normal engine operation, the lubricating oil discharged from the supercharger is immediately discharged into the oil pan, but when the engine speed decreases, including when the engine is stopped, By discharging the turbocharger into the oil pan via a float chamber that is located at approximately the same height and can be communicated with the atmosphere, the lubricating oil that has lowered the oil pressure is allowed to infiltrate at least the lubricating parts of the supercharger. There have been proposals to prevent seizure of lubricated parts. However, this method only attacks the lubricating parts of the supercharger with lubricating oil at a low pressure of about atmospheric pressure, so the circulation of the lubricating oil is not necessarily guaranteed, and the convection of the lubricating oil causes carbonization and deterioration of the lubricating oil. In addition, there is a risk of oil leakage from the bearing due to a drop in oil pressure, and it is necessary to provide a float chamber that is approximately at the same height as the lubricating area, making it unavoidable that the overall size of the turbocharger will increase. , there is a problem that it becomes disadvantageous in terms of layout.
本考案は、かかる従来の問題に鑑みなされたも
のであつて、簡単な構造でありながら、過給機の
潤滑部の潤滑を確保するとともに、冷却性を確保
することができる過給機付エンジンの潤滑装置を
提供することを目的としている。 The present invention was devised in view of such conventional problems, and is a supercharged engine capable of ensuring lubrication of the lubricating part of the supercharger and ensuring cooling performance, while having a simple structure. The purpose is to provide a lubricating device for
このため、本考案においては、過給機のオイル
吐出通路の過給機本体のオイルギヤラリ下方位置
に、エンジン停止時オイル吐出通路内のオイル吐
出量を減少させる制御装置を設け、エンジン停止
直後オイル供給通路内に残存する油圧で少量の潤
滑油を循環させるよにしたことを特徴としてい
る。 Therefore, in the present invention, a control device is installed in the oil discharge passage of the turbocharger at a position below the oil gear gallery of the turbocharger body to reduce the amount of oil discharged in the oil discharge passage when the engine is stopped, and the oil is supplied immediately after the engine is stopped. The feature is that a small amount of lubricating oil is circulated using the hydraulic pressure remaining in the passage.
以下、図示の実施例に基づいて本考案をより具
体的に説明する。 Hereinafter, the present invention will be described in more detail based on illustrated embodiments.
第１図において、１はエンジンの吸気通路２の
途中に介設したブロア３をエンジンの排気通路４
の途中に介設したタービン５により駆動し、吸気
を加圧してエンジンの各気筒に供給するようにし
た過給機、６はブロアケーシグ３ａとタービンケ
ーシング５ａとを背中合せに支持し内部において
タービン５とブロア３とを連結する回転軸７と一
対の軸受８，８′で回転自在に軸受した過給機１
の本体、９は上記軸受８，８′に分岐通路１０，
１０′を介して潤滑油を供給するオイル供給通
路、１１は過給機本体１の内部に形成したオイル
ギヤラリ１２内の潤滑油をエンジン本体１３の底
部に形成したオイルパン１４に帰還させるオイル
吐出通路で、上記オイル供給通路９には、オイル
パン１４内の潤滑油をエンンジンの出力軸により
駆動されるオイルポンプ１５よつて加圧し、加圧
した潤滑油をフイルタ１６およびメインオイルギ
ヤラリ１７を介して供給し、エンジンの他の潤滑
部と同様、過給機１の回転軸７の潤滑を図る。 In FIG. 1, reference numeral 1 indicates that a blower 3 interposed in the middle of an engine intake passage 2 is connected to an engine exhaust passage 4.
A supercharger 6 is driven by a turbine 5 interposed in the middle of the engine to pressurize intake air and supply it to each cylinder of the engine. A supercharger 1 rotatably supported by a rotating shaft 7 connecting a blower 3 and a pair of bearings 8, 8'.
The main body 9 is a branch passage 10, which is connected to the bearings 8, 8'.
10' is an oil supply passage that supplies lubricating oil, and 11 is an oil discharge passage that returns lubricating oil in an oil gear rally 12 formed inside the supercharger body 1 to an oil pan 14 formed at the bottom of the engine body 13. The lubricating oil in the oil pan 14 is pressurized into the oil supply passage 9 by an oil pump 15 driven by the output shaft of the engine, and the pressurized lubricating oil is passed through a filter 16 and a main oil gear gallery 17. The rotating shaft 7 of the supercharger 1 is lubricated like other lubricated parts of the engine.
本実施例においては、オイル吐出通路１１の途
中にエンジンの停止時、即ちキーオフ時、オイル
吐出通路１１に絞り１８を形成する電磁ソレノイ
ド弁１９を介設し、そのソレノイド１９ａにはキ
ーのオン・オフに連動してオン・オフするキース
イツチ２０を介してバツテリー２１を接続して制
御装置を構成する。 In this embodiment, an electromagnetic solenoid valve 19 that forms a throttle 18 in the oil discharge passage 11 when the engine is stopped, that is, when the key is turned off, is interposed in the oil discharge passage 11, and the solenoid 19a has a solenoid valve 19 when the key is turned off. A control device is constructed by connecting a battery 21 via a key switch 20 that turns on and off in conjunction with the off state.
上記の電磁ソレノイド弁１９は、キーオン時に
あつては、キースイツチ２０を介してバツテリ２
１から給電され、可動鉄片に支持した弁体１９ｂ
を下降させてオイル吐出通路１１を全開する（第
１図点線イ参照）一方、キーオフ時には、スプリ
ング１９ｃのバネ力で弁体１９ｂをオイル吐出通
路１１内に突出させ、少量の潤滑油の帰還を許容
する絞り１８を形成する。 When the key is on, the electromagnetic solenoid valve 19 is connected to the battery 2 via the key switch 20.
Valve body 19b is supplied with power from 1 and supported on a movable iron piece.
is lowered to fully open the oil discharge passage 11 (see dotted line A in Figure 1). At the same time, when the key is off, the valve body 19b is projected into the oil discharge passage 11 by the spring force of the spring 19c, allowing a small amount of lubricating oil to return. A permissible aperture 18 is formed.
この場合、エンジンの停止と同時にオイルポン
プ１５も停止されるが、オイル給通路９内に残存
する油圧でオイルギヤラリ１２内の潤滑油は、絞
り１８を通して少量がオイル吐出通路１１を流下
し、その結果、回転軸７の軸受８が焼付きを生じ
ない温度になるまで潤滑油はオイルギヤラリ１２
内に充満した状態で過給機１の回転軸７の潤滑を
確保すると同時に、少量の潤滑油の循環で必要な
冷却性を保証する。 In this case, the oil pump 15 is also stopped at the same time as the engine is stopped, but due to the hydraulic pressure remaining in the oil supply passage 9, a small amount of the lubricating oil in the oil gear rally 12 flows down the oil discharge passage 11 through the throttle 18, and as a result, The lubricating oil is kept in the oil gear rally 12 until the bearing 8 of the rotating shaft 7 reaches a temperature that does not cause seizure.
The rotating shaft 7 of the supercharger 1 is kept lubricated in a state where the inside is filled, and at the same time, the necessary cooling performance is ensured by circulating a small amount of lubricating oil.
なお、第１図において、３０はタービンケーシ
ング５ａの底壁を形成するリング状円盤３１と本
体６との間に形成した冷却水通路で、エンジン冷
却水の一部を分流して過給機の冷却を図る。 In FIG. 1, reference numeral 30 denotes a cooling water passage formed between the ring-shaped disk 31 forming the bottom wall of the turbine casing 5a and the main body 6, through which a part of the engine cooling water is diverted to feed the supercharger. Try to cool down.
第２図に示す実施例では、オイル吐出通路１１
の途中好ましくは、本体６のオイルギヤラリ１２
に近い部分に絞り２３を設けるとともに、この絞
り２３をバイパスするバイパス通路２４を設け、
このバイパス通路２４に該通路２４を開閉する電
磁ソレノイド弁２５を設け、電磁ソレノイド弁２
５にはキースイツチ２６を介してバツテリ２７を
接続して、制御装置を構成する。 In the embodiment shown in FIG. 2, the oil discharge passage 11
Preferably, the oil gear lary 12 of the main body 6
A throttle 23 is provided in a portion close to the throttle 23, and a bypass passage 24 is provided to bypass the throttle 23.
This bypass passage 24 is provided with an electromagnetic solenoid valve 25 that opens and closes the passage 24.
5 is connected to a battery 27 via a key switch 26 to constitute a control device.
この場合には、エンジンの運転中は、電磁スレ
ノイド弁２５を開作動してバイパス通路２４から
もオイルギヤラリ１２の潤滑油をオイルパンに帰
還させる一方、エンジン停止時は、キースイツチ
２６のオフで電磁ソレノイド弁２５を閉作動し、
バイパス通路２４を閉じる、そのため、エンジン
停止時には、絞り２３を通して少量の潤滑油がオ
イルギヤラリ１２から流出し、しかもオイルギヤ
ラリ１２には潤滑油が充満した状態が維持される
で、回転軸７の潤滑性が確保されると同時に一定
の冷却性が確保される。 In this case, while the engine is running, the electromagnetic solenoid valve 25 is opened to return the lubricating oil in the oil gear gallery 12 to the oil pan from the bypass passage 24, while when the engine is stopped, the key switch 26 is turned off and the electromagnetic solenoid valve 25 is opened. Close the valve 25,
The bypass passage 24 is closed. Therefore, when the engine is stopped, a small amount of lubricating oil flows out from the oil gear rally 12 through the throttle 23, and the oil gear rally 12 is maintained full of lubricating oil, thereby improving the lubricity of the rotating shaft 7. At the same time, a certain level of cooling performance is ensured.
なお、第２図の実施例について、第１図と同一
の部分には、同一の符号を付して重複した説明を
省略する。 In the embodiment shown in FIG. 2, the same parts as in FIG. 1 are given the same reference numerals and redundant explanation will be omitted.
以上の説明から明らかなように、本考案は、過
給機付エンジンにおいて、その停止時、過給機潤
滑部の潤滑油を絞りを介して帰還させる制御装置
を設けた過給機の潤滑装置を提供するものであ
る。 As is clear from the above description, the present invention provides a supercharger lubrication system for a supercharged engine that is equipped with a control device that returns lubricating oil from the supercharger lubrication section through a throttle when the engine is stopped. It provides:
本考案によれば、絞りによつてエンジン停止後
に潤滑部に潤滑油を充満させた状態で、その一部
を流出させるようにしたので、ごく簡単な構造で
ありながら、過給機潤滑部の潤滑性と冷却性の両
方を同時に確保することができる。 According to the present invention, after the engine is stopped, the lubricating section is filled with lubricating oil and a portion of the lubricating oil is allowed to flow out. Both lubrication and cooling properties can be ensured at the same time.
第１図は本考案に係る潤滑装置の第１実施例を
示す過給機の垂直断面を含んだ全体説明図、第２
図は本考案の第２実施例を示す過給機の垂直断面
図である。
１……過給機、２……吸気通路、３……ブロ
ア、４……排気通路、５……タービン、７……回
転軸、８，８′……軸受、９……オイル供給通
路、１１……オイル吐出通路、１９，２５……電
磁ソレノイド弁、２４……バイパス通路。
Fig. 1 is an overall explanatory view including a vertical cross section of a supercharger showing a first embodiment of a lubricating device according to the present invention;
The figure is a vertical sectional view of a supercharger showing a second embodiment of the present invention. 1...Supercharger, 2...Intake passage, 3...Blower, 4...Exhaust passage, 5...Turbine, 7...Rotating shaft, 8, 8'...Bearing, 9...Oil supply passage, 11... Oil discharge passage, 19, 25... Electromagnetic solenoid valve, 24... Bypass passage.
Claims (1)
圧する過給機の潤滑装置において、 過給機のオイル吐出通路の過給機本体のオイル
ギヤラリ下方位置に、エンジン停止時該通路内の
オイル吐出量を減少させる制御装置を設けたこと
を特徴とする過給機付エンジンの潤滑装置。[Scope of Utility Model Registration Claim] In a supercharger lubrication device that is driven by engine exhaust gas and pressurizes intake air, a supercharger oil discharge passageway located below the oil gear of the supercharger body when the engine is stopped. A lubricating device for a supercharged engine, comprising a control device that reduces the amount of oil discharged into a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981026680U JPS6113716Y2 (en) | 1981-02-25 | 1981-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981026680U JPS6113716Y2 (en) | 1981-02-25 | 1981-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57139638U JPS57139638U (en) | 1982-09-01 |
| JPS6113716Y2 true JPS6113716Y2 (en) | 1986-04-28 |
Family
ID=29824400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981026680U Expired JPS6113716Y2 (en) | 1981-02-25 | 1981-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6113716Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740170A (en) * | 1971-04-23 | 1973-06-19 | Caterpillar Tractor Co | Turbocharger cooling and lubricating system |
| US3827236A (en) * | 1972-12-18 | 1974-08-06 | D Rust | Cooling systems for turbocharger mechanisms |
| JPS5141167A (en) * | 1974-08-02 | 1976-04-06 | Yunibaashitei Enjiniaazu Inc | |
| JPS5141168A (en) * | 1974-10-02 | 1976-04-06 | Sumitomo Electric Industries | YUNIBAA SARUSHIIRUSOCHI |
-
1981
- 1981-02-25 JP JP1981026680U patent/JPS6113716Y2/ja not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740170A (en) * | 1971-04-23 | 1973-06-19 | Caterpillar Tractor Co | Turbocharger cooling and lubricating system |
| US3827236A (en) * | 1972-12-18 | 1974-08-06 | D Rust | Cooling systems for turbocharger mechanisms |
| JPS5141167A (en) * | 1974-08-02 | 1976-04-06 | Yunibaashitei Enjiniaazu Inc | |
| JPS5141168A (en) * | 1974-10-02 | 1976-04-06 | Sumitomo Electric Industries | YUNIBAA SARUSHIIRUSOCHI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57139638U (en) | 1982-09-01 |
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