JPS636422Y2 - - Google Patents
Info
- Publication number
- JPS636422Y2 JPS636422Y2 JP1983004678U JP467883U JPS636422Y2 JP S636422 Y2 JPS636422 Y2 JP S636422Y2 JP 1983004678 U JP1983004678 U JP 1983004678U JP 467883 U JP467883 U JP 467883U JP S636422 Y2 JPS636422 Y2 JP S636422Y2
- Authority
- JP
- Japan
- Prior art keywords
- supercharger
- engine
- electromagnetic clutch
- supercharging
- temperature
- 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
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】 本考案は機械式過給機付エンジンに関する。[Detailed explanation of the idea] The present invention relates to an engine with a mechanical supercharger.
過給機はエンジンの吸気系の一部を構成してい
るために、より一層の高い信頼性と耐久性が要求
される。さらに、過給機をエンジンの回転力を受
けて電磁クラツチを介して機械的に駆動する考案
がなされている。（例えば、特開昭56−167817号
公報参照）電磁クラツチはエンジンの低負荷領域
で切断され、高負荷領域で接続されるようになつ
ている。ところが、冷間時に過給を行うと急激な
温度上昇等のためエンジンの耐久性が損われる。
さらに、寒いときには過給機内において水分の氷
結が発生し、これは過給機に過大の負荷を与える
可能性があり、円滑な過給機の回転が得られなく
なる。 Since the supercharger forms part of the engine's intake system, it is required to have even higher reliability and durability. Furthermore, a method has been proposed in which the supercharger is mechanically driven via an electromagnetic clutch in response to the rotational force of the engine. (For example, see Japanese Unexamined Patent Publication No. 56-167817.) The electromagnetic clutch is disconnected in a low engine load area and connected in a high engine load area. However, if supercharging is performed when the engine is cold, the durability of the engine will be impaired due to a sudden temperature rise.
Furthermore, when it is cold, water freezes inside the supercharger, which can place an excessive load on the supercharger, making it impossible to rotate the supercharger smoothly.
本考案は機械式過給機付エンジンにおける上述
のような問題点を解決することを目的とする。 The present invention aims to solve the above-mentioned problems in mechanically supercharged engines.
そして、上記目的を達成するために、本考案に
よる機械式過給機付エンジンは、過給機が電磁ク
ラツチを介してエンジンのクランクシヤフトに連
結されるとともにこの電磁クラツチの制御により
エンジン負荷に応じて駆動されるべき駆動領域を
有し、温度センサーにより検出された温度が過給
機凍結相当温度より低い冷間時には前記駆動領域
にあつても過給機の駆動を停止するよう構成した
ことを特徴とする。 In order to achieve the above object, the engine with a mechanical supercharger according to the present invention has a supercharger connected to the engine crankshaft via an electromagnetic clutch, and controls the electromagnetic clutch to respond to the engine load. The supercharger is configured to have a drive region in which the supercharger should be driven, and to stop driving the supercharger even if it is in the drive region when the temperature detected by the temperature sensor is lower than the temperature equivalent to freezing the supercharger. Features.
第１図は本考案を適用した機械式過給機付エン
ジンの略図である。１はエンジンの１気筒を示
し、周知のように吸気通路２及び排気通路３が接
続される。吸気通路２には、エアクリーナ４、エ
アフロメータ５、過給機６、スロツトル弁７、サ
ージ室８、そして気筒１近くにインジエクター９
が配置される。 FIG. 1 is a schematic diagram of a mechanical supercharged engine to which the present invention is applied. 1 indicates one cylinder of the engine, to which an intake passage 2 and an exhaust passage 3 are connected, as is well known. The intake passage 2 includes an air cleaner 4, an air flow meter 5, a supercharger 6, a throttle valve 7, a surge chamber 8, and an injector 9 near the cylinder 1.
is placed.
過給機６はベーン１０を有するベーン式ポンプ
である。ベーン１０はクランクシヤフト１１から
ベルト伝動により電磁クラツチ１２を介して駆動
される。吸気通路２は過給機６上流において分岐
され、一方は過給機吸入側通路１３から吐出側通
路１４を通り、他方はバイパス通路１５となつて
過給機６下流において再び合流する。バイパス通
路１５には流路面積を無段階に変化させる過給制
御弁１６が配置され、この過給制御弁１６はリン
ク機構１７によりスロツトル弁７と運動可能に結
合されている。リンク機構１７には所定の信号に
基いてスロツトル弁７と過給制御弁１６との連動
を解除し、過給制御弁１６を全開にする解除機構
１８が組込まれている。 The supercharger 6 is a vane type pump having vanes 10. The vane 10 is driven from a crankshaft 11 via an electromagnetic clutch 12 by belt transmission. The intake passage 2 is branched upstream of the supercharger 6 , one passes from the supercharger suction side passage 13 to the discharge side passage 14 , and the other becomes a bypass passage 15 and joins again downstream of the supercharger 6 . A supercharging control valve 16 that changes the flow area in a stepless manner is disposed in the bypass passage 15, and the supercharging control valve 16 is movably connected to the throttle valve 7 by a link mechanism 17. The link mechanism 17 includes a release mechanism 18 that releases the interlock between the throttle valve 7 and the supercharging control valve 16 and fully opens the supercharging control valve 16 based on a predetermined signal.
スロツトル弁７の近傍にはスロツトル弁７の開
度を検出するスロツトルポジシヨンセンサー１９
が設けられて、その出力がコンピユータ２０に入
力される。エンジン冷却水温センサー２２、オイ
ル油温センサー２３がそれぞれ設置されて、これ
らの出力がコンピユータ２０に入力される。コン
ピユータ２０にはさらにインジエクター９からの
燃料噴射を制御すべき信号ａ，ｂ，ｃ，ｄが入力
されている。コンピユータ２０からはインジエク
ター９に出力するとともに、リレー２４に出力す
る。リレー２４は過給機６の電磁クラツチ１２に
接続されて電磁クラツチ１２を断続すべき電流を
制御する。 A throttle position sensor 19 is installed near the throttle valve 7 to detect the opening degree of the throttle valve 7.
is provided, and its output is input to the computer 20. An engine coolant temperature sensor 22 and an oil temperature sensor 23 are installed, and their outputs are input to the computer 20. Further, signals a, b, c, and d for controlling fuel injection from the injector 9 are input to the computer 20. The computer 20 outputs the signal to the injector 9 and also to the relay 24 . A relay 24 is connected to the electromagnetic clutch 12 of the supercharger 6 to control the current that should be applied to the electromagnetic clutch 12 on and off.
エンジン始動時には、過給制御弁１６は全開と
されており、過給機６とクランクシヤフト１１と
を結合する電磁クラツチ１２は断絶されている。
従つて、このときには過給は行われない。次い
で、スロツトル弁７が或る開度、例えば約40度、
開かれると、コンピユータ２０から電磁クラツチ
１２を接続させる信号がリレー２４に送られる。
そこで、過給機６のベーン１０は回転し、吸入側
通路１３から吐出側通路１４へと空気が送られ
る。しかしながら、このときには過給制御弁１６
は全開となつているので吐出側通路１４から送ら
れた空気は機関の燃焼室側へ送られると同時にバ
イパス通路１５を逆流することができ、実質的な
圧縮は行われない。従つて、過給機６の始動直後
の負荷は実質的に小さく、これは電磁クラツチ１
２の接続を滑らかに行わしめると同時にその駆動
源たる機関に急激な負荷を及ぼさないようにする
ことができる。 When starting the engine, the supercharging control valve 16 is fully opened, and the electromagnetic clutch 12 connecting the supercharger 6 and crankshaft 11 is disconnected.
Therefore, supercharging is not performed at this time. Next, the throttle valve 7 is opened to a certain degree, for example, about 40 degrees.
When opened, computer 20 sends a signal to relay 24 that connects electromagnetic clutch 12.
Therefore, the vanes 10 of the supercharger 6 rotate, and air is sent from the suction side passage 13 to the discharge side passage 14. However, in this case, the supercharging control valve 16
Since it is fully open, the air sent from the discharge side passage 14 can flow backward through the bypass passage 15 at the same time as it is sent to the combustion chamber side of the engine, and no substantial compression is performed. Therefore, the load on the supercharger 6 immediately after starting is substantially small, which is caused by the electromagnetic clutch 1
2 can be connected smoothly, and at the same time, it is possible to prevent a sudden load from being applied to the engine that is the driving source.
スロツトル弁７がさらに数度開かれると、過給
制御弁１６が閉じ始め数度のうちに全閉となる。
これにより、過給機６には徐々に負荷が加わり、
終には吐出側通路１４からの全量の空気が圧縮さ
れて燃焼室に送られることになる。スロツトル弁
７が閉じに向かうときには逆の作用となり、運転
操作に従つてこれが繰返される。 When the throttle valve 7 is opened several more degrees, the supercharging control valve 16 begins to close and becomes fully closed within a few degrees.
As a result, a load is gradually applied to the supercharger 6,
Eventually, the entire amount of air from the discharge side passage 14 will be compressed and sent to the combustion chamber. When the throttle valve 7 tends to close, the opposite effect occurs, and this is repeated according to the driving operation.
しかしながら、水温センサー２２又は油温セン
サー２３からの出力が定められた値より低い温度
を検出している間は、コンピユータ２０は電磁ク
ラツチ１２を接続させる信号を発生しない。そし
て、このときにコンピユータ２０からリンク解除
機構１８へ信号が送られて、過給制御弁１６が全
開とされる。従つて、冷間時にはスロツトル開度
が大きくなつても過給は行われず、無過給相当の
空気がエンジンの燃焼室に送られることになる。
第２図は以上説明した電磁クラツチ１２と過給制
御弁１６の作動のフローチヤートである。 However, while the output from the water temperature sensor 22 or the oil temperature sensor 23 detects a temperature lower than a predetermined value, the computer 20 does not generate a signal to connect the electromagnetic clutch 12. At this time, a signal is sent from the computer 20 to the link release mechanism 18, and the supercharging control valve 16 is fully opened. Therefore, when the engine is cold, even if the throttle opening becomes large, supercharging is not performed, and air equivalent to non-supercharging is sent to the combustion chamber of the engine.
FIG. 2 is a flow chart of the operation of the electromagnetic clutch 12 and supercharging control valve 16 described above.
第３図は本考案の第２実施例を示し、第１図の
水温センサー２２及び油温センサー２３の代りに
温度センサー２５が過給機６のハウジングに取付
けられている点において第１図と異つている。作
用は第１図の実施例と同様である。この場合には
過給機６の温度を直接検出しているので、圧縮作
用による温度上昇及びエンジンルーム内の温度上
昇によつて過給機自体が温度上昇したのを検出で
き、従つて、この場合には特に過給機の氷結状態
を検出するのに有利である。尚、過給機の温度上
昇の間に当然水温や油温も上昇する。 FIG. 3 shows a second embodiment of the present invention, which differs from FIG. 1 in that a temperature sensor 25 is attached to the housing of the supercharger 6 instead of the water temperature sensor 22 and oil temperature sensor 23 in FIG. It's different. The operation is similar to the embodiment shown in FIG. In this case, since the temperature of the supercharger 6 is directly detected, it is possible to detect the temperature rise of the supercharger itself due to the temperature rise due to the compression action and the temperature rise in the engine room. In some cases, this is particularly advantageous for detecting icing conditions in a supercharger. Note that while the temperature of the supercharger increases, the water temperature and oil temperature also increase.
以上説明したように、本考案によれば冷間時に
過給しないことにより急激な燃焼速度・圧力の上
昇が防止され、エンジンの耐久性が向上する。さ
らに、氷結時に過給機を運転するのを中止して過
給機に過大な負荷がかかるのが避けられ、過給機
の構成部品、電磁クラツチ、ベルト等への悪影響
が避けられる。 As explained above, according to the present invention, by not supercharging when the engine is cold, a sudden increase in combustion speed and pressure is prevented, and the durability of the engine is improved. Additionally, excessive loads on the supercharger due to stopping the operation of the supercharger during ice formation are avoided, and adverse effects on the components of the supercharger, the electromagnetic clutch, the belt, etc. are avoided.
第１図は本考案を適用した機械式過給機付エン
ジンの略図、第２図は第１図の電磁クラツチと過
給制御弁の作動を説明するフローチヤート、第３
図は本考案の第２実施例の略図である。
１……気筒、２……吸気通路、６……過給機、
７……スロツトル弁、１２……電磁弁、１５……
バイパス通路、１６……過給制御弁、１９……ス
ロツトルポジシヨンセンサー、２２，２３，２５
……温度センサー。
Fig. 1 is a schematic diagram of a mechanical supercharged engine to which the present invention is applied, Fig. 2 is a flowchart explaining the operation of the electromagnetic clutch and supercharging control valve shown in Fig. 1, and Fig. 3
The figure is a schematic diagram of a second embodiment of the present invention. 1...Cylinder, 2...Intake passage, 6...Supercharger,
7... Throttle valve, 12... Solenoid valve, 15...
Bypass passage, 16...supercharging control valve, 19...throttle position sensor, 22, 23, 25
……Temperature sensor.
Claims (1)
おいて、該過給機は電磁クラツチを介してエンジ
ンのクランクシヤフトに連結されるとともに該電
磁クラツチの制御によりエンジン負荷に応じて駆
動されるべき駆動領域を有し、温度センサーによ
り検出された温度が過給機凍結相当温度より低い
冷間時には前記駆動領域にあつても過給機の駆動
を停止するよう構成したことを特徴とする機械式
過給機付エンジン。 In an engine with a mechanical supercharger installed in the intake passage, the supercharger is connected to the engine crankshaft via an electromagnetic clutch, and the drive area to be driven according to the engine load is controlled by the electromagnetic clutch. Mechanical supercharging, characterized in that it is configured to stop driving the supercharger even if it is in the drive range when the temperature detected by the temperature sensor is lower than the supercharger freezing equivalent temperature. Machine engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP467883U JPS59111921U (en) | 1983-01-19 | 1983-01-19 | mechanical supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP467883U JPS59111921U (en) | 1983-01-19 | 1983-01-19 | mechanical supercharged engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59111921U JPS59111921U (en) | 1984-07-28 |
| JPS636422Y2 true JPS636422Y2 (en) | 1988-02-23 |
Family
ID=30136273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP467883U Granted JPS59111921U (en) | 1983-01-19 | 1983-01-19 | mechanical supercharged engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59111921U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167817A (en) * | 1980-05-30 | 1981-12-23 | Nissan Motor Co Ltd | Engine with supercharger |
| JPS5722630B2 (en) * | 1978-05-29 | 1982-05-14 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722630U (en) * | 1980-07-14 | 1982-02-05 |
-
1983
- 1983-01-19 JP JP467883U patent/JPS59111921U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722630B2 (en) * | 1978-05-29 | 1982-05-14 | ||
| JPS56167817A (en) * | 1980-05-30 | 1981-12-23 | Nissan Motor Co Ltd | Engine with supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59111921U (en) | 1984-07-28 |
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