Air-fuel ratio controller for internal combustion engine

Details Air-fuel ratio controller for internal combustion engine Air-fuel ratio controller for internal combustion engine

2007-04-17

2007-04-17

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S276000, C701S103000, C701S109000

Reexamination Certificate

active

11359461

ABSTRACT:
A first integration value is obtained by performing time integration on a feedback control signal during the time interval between the instant at which the deviation between a reference signal and the output signal of an oxygen sensor reverses from a negative value to a positive value and the instant at which the deviation reverses back to the negative value. A second integration value is obtained by performing time integration on a feedback control signal during the time interval between the instant at which the deviation between a reference signal and the output signal of the oxygen sensor reverses from a positive value to a negative value and the instant at which the deviation reverses back to the positive value. When the deviation between the absolute values of the first and second integration values is smaller than a predetermined threshold value, it is concluded that a feedback learning value is completely learned.

REFERENCES:
patent: 5227975 (1993-07-01), Nakaniwa
patent: 5640846 (1997-06-01), Ohuchi et al.
patent: 6292739 (2001-09-01), Yasui et al.
patent: 6438946 (2002-08-01), Majima et al.
patent: 6868326 (2005-03-01), Yasui
patent: A 7-197837 (1995-08-01), None
patent: A 2004-183585 (2004-07-01), None

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