JPS6295152U - - Google Patents
Info
- Publication number
- JPS6295152U JPS6295152U JP18809385U JP18809385U JPS6295152U JP S6295152 U JPS6295152 U JP S6295152U JP 18809385 U JP18809385 U JP 18809385U JP 18809385 U JP18809385 U JP 18809385U JP S6295152 U JPS6295152 U JP S6295152U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- rotation speed
- introduction path
- pressure introduction
- valve
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fluid-Driven Valves (AREA)
- Feedback Control In General (AREA)
Description
第１図は本考案の構成を明示するための構成説
明図である。第２図〜第４図は本考案の一実施例
を示し、第２図は全体を示すシステム説明図、第
３図は制御の手順を示すフローチヤート図、第４
図は目標アイドル回転数を選定するためのマツプ
内容を示す説明図である。
１…気化器、２…スロツトルバルブ、３…アク
チユエータ、８…負圧導入径路、１１…制御弁、
１２…開閉弁、２７…マイクロコンピユータシス
テム、Ａ…フイードバツク制御手段、Ｂ…負圧保
持制御手段。
FIG. 1 is a configuration explanatory diagram for clearly showing the configuration of the present invention. 2 to 4 show an embodiment of the present invention, FIG. 2 is an explanatory diagram of the entire system, FIG. 3 is a flowchart showing the control procedure, and FIG.
The figure is an explanatory diagram showing the contents of a map for selecting the target idle rotation speed. DESCRIPTION OF SYMBOLS 1... Carburetor, 2... Throttle valve, 3... Actuator, 8... Negative pressure introduction path, 11... Control valve,
12... Opening/closing valve, 27... Microcomputer system, A... Feedback control means, B... Negative pressure holding control means.
Claims (1)
ロツトルバルブの閉止位置を変化させるアクチユ
エータと、このアクチユエータを負圧源に連通さ
せる負圧導入径路と、この負圧導入径路の途中に
介設されこの径路を間欠的に大気に連通させる制
御弁と、この制御弁と前記アクチユエータとの間
に位置する負圧導入径路に介設されその負圧導入
径路を断続させる開閉弁と、エンジンの実際のア
イドル回転数を検出する回転数検出手段と、この
回転数検出手段により検出されるアイドル回転数
をエンジンに対する負荷状態に応じて決定される
目標アイドル回転数に近づける方向に前記制御弁
をデユーテイ制御するフイードバツク制御手段と
、実際のアイドル回転数が前記目標アイドル回転
数に収束した場合に前記開閉弁を閉止位置に切換
えて前記負圧導入径路を遮断させる負圧保持制御
手段とを具備してなることを特徴とするアイドル
回転数制御手段。 An actuator that changes the closing position of an engine throttle valve depending on the magnitude of the negative pressure introduced, a negative pressure introduction path that communicates the actuator with a negative pressure source, and an intervening part in the negative pressure introduction path. a control valve that intermittently communicates this path with the atmosphere; an on-off valve that is interposed in the negative pressure introduction path and connects the negative pressure introduction path intermittently between the control valve and the actuator; rotation speed detection means for detecting an idle rotation speed of the engine; and duty control of the control valve in a direction to bring the idle rotation speed detected by the rotation speed detection means closer to a target idle rotation speed determined according to a load condition on the engine. and negative pressure holding control means that switches the on-off valve to a closed position to shut off the negative pressure introduction path when the actual idle speed converges to the target idle speed. An idle rotation speed control means characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18809385U JPS6295152U (en) | 1985-12-05 | 1985-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18809385U JPS6295152U (en) | 1985-12-05 | 1985-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295152U true JPS6295152U (en) | 1987-06-17 |
Family
ID=31139139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18809385U Pending JPS6295152U (en) | 1985-12-05 | 1985-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295152U (en) |
-
1985
- 1985-12-05 JP JP18809385U patent/JPS6295152U/ja active Pending
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