Air-fuel ratio control system for an automotive engine

Details Air-fuel ratio control system for an automotive engine Air-fuel ratio control system for an automotive engine

1989-08-18

1990-10-09

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123357, F02M 3900

Patent

active

049614126

ABSTRACT:
An automotive engine has a purge system for purging fuel vapor in a canister to an intake passage of the engine, and a learning control system. Fuel injection pulse width is determined by using a learning coefficient derived from learning memory. The learning memory stores a plurality of learning coefficients which are updated with change of characteristics of elements of the engine. When the purge starts, the learning coefficients stored in the learning memory are stored in an updating memory as updating coefficients. When the purge is cut off, the learning coefficients in the learning memory are updated with updating coefficients in the updating memory.

REFERENCES:
patent: 4407769 (1984-08-01), Matsumura
patent: 4566068 (1986-01-01), Iwasaki
patent: 4630581 (1986-12-01), Shibata
patent: 4641623 (1987-02-01), Hamburg
patent: 4809667 (1989-03-01), Uranishi
patent: 4817576 (1989-04-01), Abe
patent: 4821701 (1989-04-01), Nankee, III
patent: 4841940 (1989-06-01), Uranishi
patent: 4867126 (1989-09-01), Yoiuekawa

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