Air-fuel ratio controller for internal combustion engine

Abstract

Abstract PURPOSE:To aim at improvement in drivability at the time of acceleration by increasing a fuel quantity in a way of selecting an accelerating increment patter according to an engine controlling state just before acceleration. CONSTITUTION:Each signal out of a crank angle sensor 2, an air-fuel ratio sensor 5, an air flow rate sensor 3 or the like is inputted into a controller 1, and fuel according to a driving state is sprayed out of an injection valve 11. When accelerating time is detected from a signal of a throttle sensor 4, a fuel controlling state just before it is checked up, and when decelerating control has been done, a small part in an accelerating increment factor is selected out of plural control patterns being stored in a memory, whereby a sudden change in an air-fuel ratio is checked. These control patterns can be variously set according to the driving state.

Inventors

• 👤 Yoshikazu Aochi

Bibliographic Details