Air-fuel ratio controller for internal-combustion engine

Abstract

Abstract PURPOSE:To improve the response in the control of air-fuel rtio, by proviving a throttle sensor which detects the entirely closed state of a throttle valve, and a constant alteration means for altering a constant calculated by a correction coefficient calculation means. CONSTITUTION:A correction coefficient calculation means II determines a skip constant and an integration constant on the bais of an air-fuel ratio signal ouputted by an air-fuel ratio sensor I, so as to calculate a correction coefficient. A constant alternation means VII receives a detection signal from a throttle sensor VI so that one or both of the integration constant and skip constant determined by the means II are altered to values larger than normal values, when a throttle valve is shifted from its entirely closed state to a not entirely closed state or from a not entirely closed state to the entirely closed state. This results in improving the response in the control of air-fuel ratio.

Inventors

• 👤 Riyuuichirou Kamioka
• 👤 神岡　隆一郎

Bibliographic Details