JPH0290340U - - Google Patents
Info
- Publication number
- JPH0290340U JPH0290340U JP16835288U JP16835288U JPH0290340U JP H0290340 U JPH0290340 U JP H0290340U JP 16835288 U JP16835288 U JP 16835288U JP 16835288 U JP16835288 U JP 16835288U JP H0290340 U JPH0290340 U JP H0290340U
- Authority
- JP
- Japan
- Prior art keywords
- torque
- engine
- fuel cut
- learning
- air
- 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 9
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第1図は本考案の構成を説明するための全体ブ
ロツク図、第2図はトルク変動量、燃費、および
排気エミツシヨン特性を示すグラフ、第3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
を示す全体概略図、第4図、第6図、第8図、第
9図、第10図、第12図は第3図の制御回路の
動作を説明するためのフローチヤート、第5図は
第4図のフローチヤートを補足説明する図、第7
図は第6図のフローチヤートを補足説明するため
のタイミング図、第11図は第10図のステツプ
1003の目標トルクを示す図である。
1……機関本体、3……圧力センサ、4……デ
イストリビユータ、5,6……クランク角センサ
、10……制御回路、11……燃焼圧センサ、1
3……触媒コンバータ。
Fig. 1 is an overall block diagram for explaining the configuration of the present invention, Fig. 2 is a graph showing torque fluctuation amount, fuel consumption, and exhaust emission characteristics, and Fig. 3 is an air-fuel ratio control device for an internal combustion engine according to the present invention. FIG. 4, FIG. 6, FIG. 8, FIG. 9, FIG. 10, and FIG. 12 are flowcharts for explaining the operation of the control circuit in FIG. 3; Figure 5 is a supplementary explanation of the flowchart in Figure 4;
This figure is a timing diagram for supplementary explanation of the flowchart of FIG. 6, and FIG. 11 is a diagram showing the target torque in step 1003 of FIG. 10. DESCRIPTION OF SYMBOLS 1... Engine body, 3... Pressure sensor, 4... Distributor, 5, 6... Crank angle sensor, 10... Control circuit, 11... Combustion pressure sensor, 1
3...Catalytic converter.
Claims (1)
、 該機関のトルクより該機関のトルク変動量を演
算するトルク変動量演算手段と、 前記機関の負荷領域毎に設けられた領域別学習
値を前記トルク変動量が所定値になるように更新
する学習手段と、 前記機関が燃料カツト状態か否かを判別する燃
料カツト判別手段と、 前記機関が燃料カツト状態からの復帰後に、前
記機関のトルクが目標トルクに到達したか否かを
判別する目標トルク到達判別手段と、 前記機関が燃料カツト状態時、及び復帰後に該
機関のトルクが目標トルクに到達する以前は、前
記学習手段による領域別学習値の更新を停止する
停止手段と、 前記領域別学習値に応じて前記機関の空燃比を
調整する空燃比調整手段と を具備する内燃機関の空燃比制御装置。[Scope of Claim for Utility Model Registration] Torque detection means for detecting the torque of an internal combustion engine; torque fluctuation amount calculation means for calculating the amount of torque fluctuation of the engine from the torque of the engine; learning means for updating the learned value for each region so that the torque fluctuation amount becomes a predetermined value; a fuel cut determination means for determining whether the engine is in a fuel cut state; and a fuel cut determination means for determining whether the engine is in a fuel cut state. a target torque attainment determining means that later determines whether the torque of the engine has reached the target torque; An air-fuel ratio control device for an internal combustion engine, comprising: a stopping means for stopping updating of a learning value for each region by a learning means; and an air-fuel ratio adjusting means for adjusting an air-fuel ratio of the engine according to the learning value for each region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16835288U JPH0631157Y2 (en) | 1988-12-28 | 1988-12-28 | Air-fuel ratio controller for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16835288U JPH0631157Y2 (en) | 1988-12-28 | 1988-12-28 | Air-fuel ratio controller for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0290340U true JPH0290340U (en) | 1990-07-18 |
JPH0631157Y2 JPH0631157Y2 (en) | 1994-08-22 |
Family
ID=31457457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16835288U Expired - Lifetime JPH0631157Y2 (en) | 1988-12-28 | 1988-12-28 | Air-fuel ratio controller for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0631157Y2 (en) |
-
1988
- 1988-12-28 JP JP16835288U patent/JPH0631157Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0631157Y2 (en) | 1994-08-22 |