JPS6343364Y2 - - Google Patents
Info
- Publication number
- JPS6343364Y2 JPS6343364Y2 JP1981046315U JP4631581U JPS6343364Y2 JP S6343364 Y2 JPS6343364 Y2 JP S6343364Y2 JP 1981046315 U JP1981046315 U JP 1981046315U JP 4631581 U JP4631581 U JP 4631581U JP S6343364 Y2 JPS6343364 Y2 JP S6343364Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic tappet
- tappet
- main
- hydraulic
- 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
- 239000003921 oil Substances 0.000 description 59
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 101150006573 PAN1 gene Proteins 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案はエンジンの油圧タペツトの給油装置の
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a oil supply system for a hydraulic tappet of an engine.
車輛用エンジン等において、一時的に吸・排気
弁の開閉動を停止するために、カムによつて駆動
されるタペツトを油圧式にして、吸・排気弁の停
止時のみ、油圧タペツトへの給油を電磁弁等によ
つて遮断するようにしたものがある。 In vehicle engines, etc., in order to temporarily stop the opening/closing movement of the intake/exhaust valves, the tappets driven by cams are made hydraulic, and oil is supplied to the hydraulic tappets only when the intake/exhaust valves are stopped. Some devices are designed to shut off the flow using a solenoid valve or the like.
このような油圧タペツトでは、タペツトへの給
油は、第１図に示すように、オイルパン１よりオ
イルストレーナ２を経てオイルポンプ３に吸引さ
れ、メインオイルクーラ４、オイルフイルタ５を
介してメインオイルギヤラリ６に供給され、常開
型の給油遮断用電磁弁７を経て油圧タペツト８に
給油されるようになつている。 In such a hydraulic tappet, oil is supplied to the tappet by suction from an oil pan 1 through an oil strainer 2 to an oil pump 3, and then through a main oil cooler 4 and an oil filter 5 to supply main oil. The oil is supplied to a gearbox 6, and is supplied to a hydraulic tappet 8 via a normally open type oil supply cutoff solenoid valve 7.
尚、９は給油遮断用電磁弁７と連動して開作動
を行なう常閉型の油戻し用電磁弁である。 Note that 9 is a normally closed oil return solenoid valve that opens in conjunction with the oil supply cutoff solenoid valve 7.
また、メインオイルギヤラリ６よりは各潤滑部
や冷却部S1，S2，S3，S4等にも油が供給されるよ
うになつている。 Furthermore, oil is supplied from the main oil gear gallery 6 to each lubricating section, cooling sections S 1 , S 2 , S 3 , S 4 , etc.
更に、V1，V2はリリーフバルブであり、V3，
V4はバイパスバルブを示している。 Furthermore, V 1 and V 2 are relief valves, and V 3 and V 2 are relief valves.
V 4 indicates a bypass valve.
以上のように構成された油圧タペツト給油装置
ではメインオイルクーラ４を通過した油の温度は
エンジンの冷却水によつて冷却されるだけなの
で、通常は80〜95℃であり、この温度では油の粘
度が低下し過ぎるため、油圧タペツトとその内部
を摺動するプランジヤ間のリークが大きく、通常
運転時におけるリフトロスが大きいという欠点が
つた。 In the hydraulic tappet oil supply system configured as described above, the temperature of the oil that has passed through the main oil cooler 4 is only cooled by the engine cooling water, so it is normally 80 to 95 degrees Celsius, and at this temperature, the oil temperature is Because the viscosity was too low, there was a large leak between the hydraulic tappet and the plunger sliding inside it, resulting in a large lift loss during normal operation.
また、実開昭57−92812号公報に開示されたエ
ンジンの潤滑油装置のように、メインオイルクー
ラの代りに、潤滑油供給通路の一部を冷却フアン
後方のエンジン外壁面に沿つて配設したもので
は、油圧タペツトへ供給するオイルを十分に冷却
することができず、上述のような油圧タペツトと
その内部を摺動するプランジヤ間のリークの増大
によるリフトロスを解消できないものである。 Also, like the engine lubricating oil system disclosed in Japanese Utility Model Application No. 57-92812, instead of the main oil cooler, a part of the lubricating oil supply passage is arranged along the outer wall surface of the engine behind the cooling fan. However, the oil supplied to the hydraulic tappet cannot be sufficiently cooled, and the lift loss caused by increased leakage between the hydraulic tappet and the plunger sliding inside the tappet cannot be eliminated.
本考案はこのような欠点を解消するために案出
したもので、その要旨は、オイルポンプよりメイ
ンオイルクーラ、オイルフイルタを介してメイン
オイルギヤラリに供給され、そのメインオイルギ
ヤラリより油圧タペツトに給油される給油装置の
前記メインオイルギヤラリと油圧タペツトとの間
の油路中に第２のオイルクーラを設けて成る油圧
タペツトの給油装置にあり、以下その１実施例を
第２図、第３図について説明する。 The present invention was devised to eliminate these drawbacks, and its gist is that oil is supplied from the oil pump to the main oil gear via the main oil cooler and oil filter, and from the main oil gear to the hydraulic tappet. The oil supply system for a hydraulic tappet is provided with a second oil cooler in the oil passage between the main oil gear and the hydraulic tappet, and an embodiment thereof is shown in FIG. FIG. 3 will be explained.
尚、第１図に示した従来装置と同一部品につい
ては同一符号を符すものとする。 Note that parts that are the same as those of the conventional device shown in FIG. 1 are designated by the same reference numerals.
８はシリンダブロツク１９のタペツト室２０に
嵌装された油圧タペツトで、カム１０に接触して
それによつて駆動されるもので、その内部にプツ
シユロツド１１を支え且つ上下動させるプランジ
ヤ１２が摺動自在に嵌装されており、プランジヤ
１２の下部にはばね１３が挿入されている。 Reference numeral 8 denotes a hydraulic tappet fitted in the tappet chamber 20 of the cylinder block 19, which is brought into contact with the cam 10 and driven by it. A plunger 12 that supports the push rod 11 and moves it up and down is slidably inside the tappet. A spring 13 is inserted into the lower part of the plunger 12.
１４はロツカアームで、プツシユロツド１１の
作動によりばね１５に抗して吸又は排気弁１６を
開閉するようになつている。１７は吸・排気路１
６ａを備えたシリンダヘツドである。 Reference numeral 14 denotes a rocker arm which opens and closes an intake or exhaust valve 16 against a spring 15 when the push rod 11 is actuated. 17 is intake/exhaust passage 1
6a.
１８はシリンダブロツク１９に形成された油路
で、常開型の給油遮断用電磁弁７と連結し、逆止
弁２１を介して油圧タペツト８の油圧室２２に油
を供給するように成つている。 Reference numeral 18 denotes an oil passage formed in the cylinder block 19, which is connected to the normally open type oil supply cutoff solenoid valve 7, and is configured to supply oil to the hydraulic chamber 22 of the hydraulic tappet 8 via the check valve 21. There is.
２８は油の戻し用油路で、常閉型の油戻し用電
磁弁９を介してオイルパン１に油を戻すものであ
る。 Reference numeral 28 denotes an oil return path for returning oil to the oil pan 1 via a normally closed oil return solenoid valve 9.
前記両電磁弁７，９は各々スイツチ２３を介し
て電源２４に連結されていて、スイツチ２３の閉
路時に夫々作動してタペツト８への給油の断続を
行なうようになつており、スイツチ２３は手動操
作によつて開閉しても良いし、エンジンの負荷や
回転を検出して自動的に開閉する構造のものとし
ても良い。２５はメインオイルギヤラリ６と前記
電磁弁７とを連結する油路２６中に配置された第
２のオイルクーラ２５で、適宜の冷媒をもつて油
温を30゜〜50℃に冷却させるもので、２７は、冷
媒の熱交換器である。尚、前記第２のオイルクー
ラ２５は、冷却効果のすぐれた構造のものであれ
ば空冷式のものでも良い。 Both the electromagnetic valves 7 and 9 are each connected to a power source 24 via a switch 23, and are operated when the switch 23 is closed to cut off or cut off the oil supply to the tappet 8, and the switch 23 can be operated manually. It may be opened and closed by operation, or it may be structured to open and close automatically by detecting the load and rotation of the engine. Reference numeral 25 denotes a second oil cooler 25 disposed in an oil passage 26 connecting the main oil gear gallery 6 and the electromagnetic valve 7, which uses an appropriate refrigerant to cool the oil temperature to 30° to 50°C. 27 is a refrigerant heat exchanger. Note that the second oil cooler 25 may be of an air-cooled type as long as it has a structure with an excellent cooling effect.
このように油圧タペツト８への油路２６の途中
に第２のオイルクーラ２５を配設したもので、エ
ンジンの正常運転時において、油圧タペツト８の
油圧室２２に導入される油は、油圧オイルクーラ
と第２のオイルクーラ２５とによつて２段階に冷
却されるため、従来のもの（80〜95℃）に比して
はるかに低い温度（30〜50℃）に保持することが
できたので、油の粘性が適性な範囲に保持され
る。従つて、油の粘性の低下によるタペツト室２
０からのオイルリークが防止されるから、プツシ
ユロツド１１に対するリフトロスもなくなる。 In this way, the second oil cooler 25 is disposed in the middle of the oil passage 26 to the hydraulic tappet 8, and during normal operation of the engine, the oil introduced into the hydraulic chamber 22 of the hydraulic tappet 8 is the hydraulic oil. Because it is cooled in two stages by the cooler and the second oil cooler 25, it was able to maintain a much lower temperature (30 to 50 degrees Celsius) compared to conventional ones (80 to 95 degrees Celsius). Therefore, the viscosity of the oil is maintained within an appropriate range. Therefore, due to the decrease in the viscosity of the oil, the tappet chamber 2
Since oil leakage from 0 is prevented, lift loss to the push rod 11 is also eliminated.
従つて、一時的に吸・排気弁の開閉動を停止す
ることのできる油圧タペツトの信頼性を向上でき
ると共に、エンジンの吸・排気効率をも向上さ
せ、性能の優れたエンジンをも提供できる効果が
ある。 Therefore, the reliability of the hydraulic tappet, which can temporarily stop the opening/closing movement of the intake/exhaust valves, can be improved, and the intake/exhaust efficiency of the engine can also be improved, providing an engine with excellent performance. There is.
第１図は従来のエンジンの潤滑油の給油装置を
示す概略系統図、第２図は本考案実施例における
給油装置の要部を示す概略系統図、第３図は同実
施例における油圧タペツトを含む動弁機構を示す
縦断面図である。
４……メインオイルクーラ、５……オイルフイ
ルタ、６……メインオイルギヤラリ、７……給油
遮断用電磁弁、８……油圧タペツト、９……油戻
し用電磁弁、２５……第２のオイルクーラ、２６
……油路、２７……熱交換器。
Fig. 1 is a schematic system diagram showing a conventional engine lubricating oil supply system, Fig. 2 is a schematic system diagram showing the main parts of the oil supply system in an embodiment of the present invention, and Fig. 3 is a diagram showing a hydraulic tappet in the same embodiment. FIG. 3 is a vertical cross-sectional view showing a valve train including the valve train. 4...Main oil cooler, 5...Oil filter, 6...Main oil gear, 7...Solenoid valve for oil supply cutoff, 8...Hydraulic tappet, 9...Solenoid valve for oil return, 25...Second oil cooler, 26
...Oil line, 27...Heat exchanger.
Claims (1)
フイルタを介してメインオイルギヤラリに送給さ
れ、そのメインオイルギヤラリより油圧タペツト
に給油される給油装置の前記メインオイルギヤラ
リと油圧タペツトとの間の油路中に第２のオイル
クーラを設けて成る油圧タペツトの給油装置。 An oil passage between the main oil gear and the hydraulic tappet of the oil supply system, in which oil is supplied from the oil pump to the main oil gear via the main oil cooler and oil filter, and the oil is supplied from the main oil gear to the hydraulic tappet. A hydraulic tappet oil supply device having a second oil cooler installed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981046315U JPS6343364Y2 (en) | 1981-03-31 | 1981-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981046315U JPS6343364Y2 (en) | 1981-03-31 | 1981-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57158905U JPS57158905U (en) | 1982-10-06 |
| JPS6343364Y2 true JPS6343364Y2 (en) | 1988-11-11 |
Family
ID=29843167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981046315U Expired JPS6343364Y2 (en) | 1981-03-31 | 1981-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6343364Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047811A (en) * | 1983-08-25 | 1985-03-15 | Honda Motor Co Ltd | Valve moving device with stopping function for internal- combustion engine |
| JPS6055706U (en) * | 1983-09-26 | 1985-04-18 | 本田技研工業株式会社 | Hydraulic lash adjuster oil supply structure |
| JPH0430430Y2 (en) * | 1986-02-27 | 1992-07-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609364Y2 (en) * | 1980-11-28 | 1985-04-03 | マツダ株式会社 | engine lubrication system |
-
1981
- 1981-03-31 JP JP1981046315U patent/JPS6343364Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57158905U (en) | 1982-10-06 |
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