Fuel controller of engine

Abstract

Abstract PURPOSE:To perform reliable control, in which aged deterioration of an engine is reflected even during open loop control, by renewing control data, used during closed loop air-fuel ratio cntrol, by the use of a learning value employed during closed air-fuel ratio control. CONSTITUTION:In a device which controls the air-fuel ratio of air-fuel mixture through control of the amount of the fuel discharged from an injector 3 by means of a computer 4 according to operating condition of an engine, the computer 4 is operated to read out from an ROM17 the basic amount of fuel discharged, based on the outputs of a suction negative sensor 5 and a rotation sensor 7. Further, an engine condition correcting value, provided by processing an air-fuel correcting value found from the output of the O2 sensor 8, is stored in an RAM18 to find from said correcting value an engine condition correcting value employed during open loop control. Thereafter, the actual amount of fuel discharged from the injector 3 is controlled according to said basic amount of fuel discharged, the engine condition correcting value, and the air-fuel correcting value.

Inventors

• 👤 Hirobumi Nishimura
• 👤 博文 西村

Bibliographic Details