JPH01144445U - - Google Patents
Info
- Publication number
- JPH01144445U JPH01144445U JP4064988U JP4064988U JPH01144445U JP H01144445 U JPH01144445 U JP H01144445U JP 4064988 U JP4064988 U JP 4064988U JP 4064988 U JP4064988 U JP 4064988U JP H01144445 U JPH01144445 U JP H01144445U
- Authority
- JP
- Japan
- Prior art keywords
- engine
- air
- fuel ratio
- fuel
- acceleration
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の基本概念図、第２〜１１図は
本考案に係る内燃機関の空燃比制御装置の一実施
例を示す図であり、第２図はその全体構成図、第
３図はその平滑噴射量を演算するサブルーチンを
示すフローチヤート、第４図はその平滑噴射の作
用を説明するタイミングチヤート、第５図はその
噴射量演算のメインプログラムを示すフローチヤ
ート、第６図はそのＫＳＭを演算するサブルーチ
ンを示すフローチヤート、第７図はそのＴｉｐを
演算するサブルーチンを示すフローチヤート、第
８図はそのＫＳＭを用いた空燃比の切換状況を示
す図、第９図はそのフユエルカツト気筒がある場
合のタイミングチヤート、第１０図はそのリツチ
、リーンを交互に切換える場合のタイミングチヤ
ート、第１１図はそのη＝１にする気筒とリーン
気筒とがある場合のタイミングチヤート、第１２
図は従来の内燃機関の空燃比制御装置の作用を説
明するタイミングチヤートである。
１……エンジン、４……インジエクタ（燃料供
給手段）、９……絞弁開度センサ（加速検出手段
）、１４……運転状態検出手段、２０……コント
ロールユニツト（補正係数演算手段、供給量演算
手段）。
Fig. 1 is a basic conceptual diagram of the present invention, Figs. 2 to 11 are diagrams showing an embodiment of an air-fuel ratio control device for an internal combustion engine according to the present invention, Fig. 2 is an overall configuration diagram thereof, and Fig. 3 is a diagram showing an embodiment of the air-fuel ratio control device for an internal combustion engine according to the present invention. is a flowchart showing the subroutine for calculating the smooth injection amount, FIG. 4 is a timing chart explaining the effect of the smooth injection, FIG. 5 is a flowchart showing the main program for calculating the injection amount, and FIG. FIG. 7 is a flowchart showing a subroutine to calculate the KSM, FIG. 7 is a flowchart showing the subroutine to calculate the tip, FIG. 8 is a diagram showing the air-fuel ratio switching situation using the KSM, and FIG. 9 is the fuel cut cylinder. Fig. 10 is a timing chart when rich and lean are switched alternately, Fig. 11 is a timing chart when there is a cylinder where η = 1 and a lean cylinder.
The figure is a timing chart illustrating the operation of a conventional air-fuel ratio control device for an internal combustion engine. DESCRIPTION OF SYMBOLS 1... Engine, 4... Injector (fuel supply means), 9... Throttle valve opening sensor (acceleration detection means), 14... Operating state detection means, 20... Control unit (correction coefficient calculation means, supply amount calculation means).
Claims (1)
出手段と、 (b) エンジンの加速を検出する加速検出手段と
、 (c) エンジンが所定の加速状態に移行すると、
加速状態に応じて空燃比をリツチ側およびリーン
側に補正する複数の補正係数を演算する補正係数
演算手段と、 (d) エンジンの運転状態に基づき目標空燃比と
なるように気筒別に燃料供給量を演算するととも
に、エンジンが所定の加速状態に移行すると、所
定間隔で気筒別に空燃比がリツチ又はリーンとな
るように該燃料供給量を前記補正係数によつて補
正する供給演算手段と、 (e) 供給量演算手段の出力に基づいて気筒別に
燃料を供給する燃料供給手段と、 備えたことを特徴とする内燃機関の空燃比制御
装置。[Scope of Claim for Utility Model Registration] (a) Operating state detection means for detecting the operating state of the engine; (b) Acceleration detection means for detecting acceleration of the engine; (c) When the engine shifts to a predetermined acceleration state. ,
(d) correction coefficient calculation means for calculating a plurality of correction coefficients for correcting the air-fuel ratio to the rich side and lean side according to the acceleration state; and a supply calculation means for correcting the fuel supply amount by the correction coefficient so that the air-fuel ratio becomes rich or lean for each cylinder at predetermined intervals when the engine shifts to a predetermined acceleration state; ) An air-fuel ratio control device for an internal combustion engine, comprising: fuel supply means for supplying fuel to each cylinder based on the output of the supply amount calculation means;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4064988U JPH0612233Y2 (en) | 1988-03-28 | 1988-03-28 | Air-fuel ratio controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4064988U JPH0612233Y2 (en) | 1988-03-28 | 1988-03-28 | Air-fuel ratio controller for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01144445U true JPH01144445U (en) | 1989-10-04 |
| JPH0612233Y2 JPH0612233Y2 (en) | 1994-03-30 |
Family
ID=31267116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4064988U Expired - Lifetime JPH0612233Y2 (en) | 1988-03-28 | 1988-03-28 | Air-fuel ratio controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612233Y2 (en) |
-
1988
- 1988-03-28 JP JP4064988U patent/JPH0612233Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0612233Y2 (en) | 1994-03-30 |
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