JPS6393456U - - Google Patents
Info
- Publication number
- JPS6393456U JPS6393456U JP19026486U JP19026486U JPS6393456U JP S6393456 U JPS6393456 U JP S6393456U JP 19026486 U JP19026486 U JP 19026486U JP 19026486 U JP19026486 U JP 19026486U JP S6393456 U JPS6393456 U JP S6393456U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- intake pressure
- recirculated
- intake
- gas recirculation
- 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 description 2
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の要旨構成を示すブロツク線図
、第２図は本考案が適用される実施例の電子制御
デイーゼルエンジンの全体構成を示す、一部ブロ
ツク線図を含む断面図、第３図は前記実施例に用
いられる電子制御ユニツトの内部構成を示すブロ
ツク線図、第４図は本考案の実施例の作用を説明
するための、ＥＧＲ量の駆動デユーテイを決める
ルーチンを示す流れ図、第５図は同じく、前記ル
ーチンで用いられるアイドル時の吸気圧に対する
目標吸気圧のマツプの例を示す線図、第６図は同
じく、吸気圧の差に基づくＥＧＲ補正量を算出す
るためのマツプの例を示す線図である。
１０……デイーゼルエンジン、２０……アクセ
ル開度センサ、Ａｃｃｐ……アクセル開度、３１
……圧力検出ポート、３２……吸気圧センサ、３
３……オイルフイルタ、４６……ＮＥセンサ、Ｎ
Ｅ……エンジン回転数、５３……ＥＧＲ通路、５
４……ＥＧＲ弁、５５……電子制御負圧調整弁（
ＥＶＲＶ）、５６……電子制御ユニツト（ＥＣＵ
）、Ｄｅｇｒ……ＥＧＲの駆動デユーテイ比、Ｄ
ｉｅ……ＥＧＲの駆動デユーテイ比の補正量。
Fig. 1 is a block diagram showing the main structure of the present invention; Fig. 2 is a sectional view including a partial block diagram showing the overall structure of an electronically controlled diesel engine according to an embodiment to which the present invention is applied; 4 is a block diagram showing the internal structure of the electronic control unit used in the embodiment, FIG. 4 is a flowchart showing a routine for determining the drive duty of the EGR amount, and Similarly, Fig. 5 is a diagram showing an example of a map of target intake pressure against intake pressure during idling used in the routine, and Fig. 6 is a diagram showing an example of a map for calculating the EGR correction amount based on the difference in intake pressure. FIG. 3 is a diagram illustrating an example. 10... Diesel engine, 20... Accelerator opening sensor, Accp... Accelerator opening, 31
...Pressure detection port, 32 ...Intake pressure sensor, 3
3...Oil filter, 46...NE sensor, N
E...Engine speed, 53...EGR passage, 5
4...EGR valve, 55...Electronically controlled negative pressure regulating valve (
EVRV), 56...Electronic control unit (ECU)
), Degr...EGR drive duty ratio, D
ie... Correction amount of EGR drive duty ratio.
Claims (1)
伝達された吸気圧を吸気圧センサで検出し、検出
された吸気圧に応じて排気ガス再循環量を制御す
るようにされた排気ガス再循環制御装置において
、 同一運転時に、排気ガスを再循環しない場合及
び再循環した場合の吸気圧を前記吸気圧センサで
検出する吸気圧検出手段と、 検出された吸気圧から、排気ガスを再循環しな
い場合及び再循環した場合の吸気圧間の変化率を
算出する演算器と、 算出された変化率が所定値以下のときに、前記
圧力伝達経路に詰りが発生したと判断する手段と
、 を備えたことを特徴とする排気ガス再循環制御
装置。[Scope of Claim for Utility Model Registration] The intake pressure transmitted from the engine intake passage through the pressure transmission path is detected by an intake pressure sensor, and the amount of exhaust gas recirculation is controlled according to the detected intake pressure. In the exhaust gas recirculation control device, the intake pressure detection means detects the intake pressure with the intake pressure sensor when the exhaust gas is not recirculated and when the exhaust gas is recirculated during the same operation, and from the detected intake pressure, a calculator that calculates the rate of change between intake pressures when exhaust gas is not recirculated and when it is recirculated; and a calculator that determines that a blockage has occurred in the pressure transmission path when the calculated rate of change is less than a predetermined value. An exhaust gas recirculation control device comprising: a means for controlling; and an exhaust gas recirculation control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19026486U JPS6393456U (en) | 1986-12-10 | 1986-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19026486U JPS6393456U (en) | 1986-12-10 | 1986-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6393456U true JPS6393456U (en) | 1988-06-16 |
Family
ID=31143322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19026486U Pending JPS6393456U (en) | 1986-12-10 | 1986-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6393456U (en) |
-
1986
- 1986-12-10 JP JP19026486U patent/JPS6393456U/ja active Pending
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