JPH056025B2 - - Google Patents
Info
- Publication number
- JPH056025B2 JPH056025B2 JP58144001A JP14400183A JPH056025B2 JP H056025 B2 JPH056025 B2 JP H056025B2 JP 58144001 A JP58144001 A JP 58144001A JP 14400183 A JP14400183 A JP 14400183A JP H056025 B2 JPH056025 B2 JP H056025B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- output
- engine
- correction amount
- detection means
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/002—Electric control of rotation speed controlling air supply
- F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
- F02D31/005—Electric control of rotation speed controlling air supply for idle speed control by controlling a throttle by-pass
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、エンジンのアイドル回転数制御装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an engine idle speed control device.
一般にエンジンのアイドル回転数制御装置は、
エンジンのアイドル時において、エンジンに供給
する混合気量を調整してエンジン回転数を低回転
一定に制御し、燃焼性の安定と燃費の向上とを図
るようにしたものである。従来、このようにアイ
ドル回転数を一定に制御する方法としては、製造
時においてスロツトル弁にイニシヤル開度（アイ
ドル開度）を与えておく方法と、実際のエンジン
回転数を検出してスロツトル弁開度等をフイード
バツク制御する方法とが知られている。
In general, engine idle speed control devices are
When the engine is idling, the amount of air-fuel mixture supplied to the engine is adjusted to keep the engine speed constant at a low speed, thereby stabilizing combustibility and improving fuel efficiency. Conventionally, there are two methods for controlling the idle speed to a constant value: one is to give the throttle valve an initial opening (idle opening) at the time of manufacture, and the other is to detect the actual engine speed and adjust the throttle valve opening. A method of feedback controlling the temperature, etc. is known.
そして前者の方法の場合、スロツトル弁のイニ
シヤル開度を一定としてもエンジンの製造誤差や
特性の個体差等に起因して実際のエンジン回転数
にはばらつきが生じるため、イニシヤルのスロツ
トル弁開度を高めに設定する必要があるという問
題がある。これに対し、後者のフイードバツク制
御による方法では、製造誤差や個体差等に関係な
く、アイドル回転数を所望の目標回転数に保持で
きるという利点がある。 In the case of the former method, even if the initial opening of the throttle valve is constant, the actual engine speed will vary due to manufacturing errors and individual differences in engine characteristics. The problem is that it needs to be set high. On the other hand, the latter method using feedback control has the advantage that the idle speed can be maintained at a desired target speed regardless of manufacturing errors, individual differences, and the like.
ところで上述のような方法でアイドル回転数を
一定に保持している状態で、クーラ等の外部負荷
が加つたような場合には、エンジン回転数が低下
してしまうという問題がある。この場合、上記フ
イードバツク制御による方法では、一旦エンジン
回転数が低下しても該フイードバツク制御により
該エンジン回転数は目標回転数まで上昇復帰する
こととなるが、この場合制御系に制御遅れがある
ため、この目標回転数に到達するまでには時間が
かかるという問題がある。 However, when an external load such as a cooler is applied while the idle speed is maintained constant using the method described above, there is a problem in that the engine speed decreases. In this case, in the method using feedback control, even if the engine speed once drops, the engine speed will rise and return to the target speed due to the feedback control, but in this case, there is a control delay in the control system. , there is a problem in that it takes time to reach this target rotation speed.
そこでこのような問題を解消するようにしたも
のとして、従来、特開昭54−113725号公報に示さ
れるように、外部負荷に応じた補正量でもつて見
込み制御を行なうことにより、エンジン回転数を
目標回転数まで引き上げるようにしたものがあ
る。ここで見込み制御とは、例えば、クーラやパ
ワーステアリングの負荷のときは2 In order to solve this problem, as shown in Japanese Patent Application Laid-open No. 113725/1984, the engine speed is conventionally controlled by prospectively controlling the amount of correction according to the external load. There are some that are designed to raise the rotation speed to the target speed. Here, predictive control means, for example, when the load is on a cooler or power steering, 2
Claims (1)
検出手段と、スロツトル弁をバイパスするバイパ
ス通路と、該バイパス通路に配設され通路開口面
積を調整する調整弁と、エンジンに加わる外部負
荷状態を検出する負荷状態検出手段と、該負荷状
態検出手段の出力を受け負荷状態に応じた上記調
整弁の見込み補正量を決定する見込み補正量決定
手段と、上記負荷状態検出手段の出力を受け多重
負荷のとき上記見込み補正量決定手段の出力に対
して多重補正を行なう多重負荷補正手段と、エン
ジンのアイドル時において単一の外部負荷が加わ
つた時上記見込み補正量決定手段の出力に応じて
上記調整弁を駆動制御するとともに、多重の外部
負荷が加わつた時上記多重負荷補正手段の出力に
応じて上記調整弁を駆動制御する制御手段とを備
えたことを特徴とするエンジンのアイドル回転数
制御装置。1. Idle detection means for detecting the idle state of the engine, a bypass passage for bypassing the throttle valve, an adjustment valve disposed in the bypass passage for adjusting the opening area of the passage, and a load state for detecting the external load state applied to the engine. a detection means, an estimated correction amount determining means that receives the output of the load condition detection means and determines an estimated correction amount of the regulating valve according to the load condition, and receives the output of the load condition detection means and determines the estimated correction amount in the case of multiple loads. multiple load correction means for performing multiple corrections on the output of the correction amount determination means; and drive control of the regulating valve according to the output of the estimated correction amount determination means when a single external load is applied while the engine is idling. and control means for driving and controlling the regulating valve according to the output of the multiple load correction means when multiple external loads are applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14400183A JPS6035151A (en) | 1983-08-05 | 1983-08-05 | Control device of idle speed in engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14400183A JPS6035151A (en) | 1983-08-05 | 1983-08-05 | Control device of idle speed in engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6035151A JPS6035151A (en) | 1985-02-22 |
| JPH056025B2 true JPH056025B2 (en) | 1993-01-25 |
Family
ID=15352004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14400183A Granted JPS6035151A (en) | 1983-08-05 | 1983-08-05 | Control device of idle speed in engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6035151A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5384945A (en) * | 1993-04-21 | 1995-01-31 | United States Surgical Corporation | Device for forming drilled needle blanks |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018822B2 (en) * | 1978-02-27 | 1985-05-13 | 日産自動車株式会社 | Automatic no-load speed control device for internal combustion engines |
-
1983
- 1983-08-05 JP JP14400183A patent/JPS6035151A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6035151A (en) | 1985-02-22 |
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