Air-fuel ratio feedback control system for internal combustion engine
Abstract
Abstract Translated from Japanese (57)【要約】 【構成】 内燃機関の排気系の挙動を記述するモデルを 備え、排気系に配置した単一の空燃比センサの出力を入 力し、オブザーバを介して各気筒の空燃比を推定する。 集合部フィードバックループと気筒毎フィードバックル ープを直列に接続すると共に、気筒毎フィードバックの 目標値は集合部空燃比を気筒毎フィードバック補正項の 平均値で除算した値とする。 【効果】 気筒間の空燃比のバラツキを吸収しつつ各気 筒空燃比を目標値に収束させる。 (57) [Summary] [Structure] A model that describes the behavior of the exhaust system of an internal combustion engine is provided, and the output of a single air-fuel ratio sensor placed in the exhaust system is input, and the air-fuel ratio of each cylinder is determined via an observer. presume. The collective feedback loop and the feedback loop for each cylinder are connected in series, and the target value for the feedback for each cylinder is a value obtained by dividing the collective air-fuel ratio by the average value of the feedback correction term for each cylinder. [Effect] The air-fuel ratio of each cylinder is converged to the target value while absorbing the variation of the air-fuel ratio between the cylinders.
Inventors
- 👤 Yusuke Hasegawa
- 👤 祐介 長谷川
- 👤 Isao Komoriya
- 👤 勲 小森谷
- 👤 Naosuke Akasaki
- 👤 修介 赤崎
- 👤 Eisuke Kimura
- 👤 英輔 木村
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.