Air-fuel ratio moderating control method for electronically controlled engine

Abstract

Abstract PURPOSE:To improve drivability by providing a procedure for estimating a target value of fuel amount, a procedure for estimating the amount of an allowable change of the fuel amount in response to the degree of acceleration and deceleration, and a procedure for allowing the target value to approach the fuel amount. CONSTITUTION:An air-fuel ratio annealing control method for an electronic control engine includes a procedure for estimating a targer value of fuel amount and ignition timing in response to an engine operating state, a procedure for detecting the degree of acceleration and deceleration, and a procedure for estimating the amount of allowable changes in the fuel amount in response to said degree of the acceleration and deceleration. In addition, the control method includes a procedure for estimating the amount of correction of ignition timing in responce to the amount of allowable change of the amount of fuel and a procedure for allowing the fuel amount to gradually approach the target value by the amount of allowable change at a time as well as correcting the ignition timing by the aforesaid correction amount. Hereby, drivability can be improved.

Inventors

• 👤 Kenji Kato
• 👤 健治 加藤
• 👤 Soichi Matsushita
• 👤 宗一 松下
• 👤 Kiyoshi Nakanishi
• 👤 清 中西
• 👤 Tokuta Inoue
• 👤 井上　悳太

Bibliographic Details