Engine control device and control method thereof

Details Engine control device and control method thereof Engine control device and control method thereof

2007-02-20

2008-07-22

Vo, Hieu T (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S480000, C701S105000

Reexamination Certificate

active

07401604

ABSTRACT:
An engine control device and method that prevents fuel injection quantity from becoming unstable due to a rapid change of a correction quantity even in a predetermined operation state such as acceleration time and thus stabilizes an air-fuel ratio. Under a predetermined operating state, even when feedback control of oxygen in exhaust gas is stopped, a correction quantity immediately before the predetermined operating state is held by a correction quantity storage part and the correction of the fuel injection time is performed based on the correction quantity.

REFERENCES:
patent: 4530333 (1985-07-01), Nishimura
patent: 4834051 (1989-05-01), Tanaka et al.
patent: 4957087 (1990-09-01), Ota

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