Engine control device

Details Engine control device Engine control device

2005-04-12

2005-04-12

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Intake manifold

C123S395000

Reexamination Certificate

active

06877471

ABSTRACT:
A engine control device includes a failure judgment means for making at least a failure judgment of an intake pipe pressure sensor. The failure judgment means includes a first data processing for outputting an estimated intake pipe pressure signal, a second data processing for outputting a modification estimated intake pipe pressure signal in which the estimated intake pipe pressure signal is modified, and a failure judgment processing for making a failure judgment of at least the intake pipe pressure sensor by comparing the measured intake pipe pressure signal with the modification estimated intake pipe pressure signal. The modification estimated intake pipe pressure signal has a change portion changing between a change portion of the estimated intake pipe pressure signal and a change portion of the measured intake pipe pressure signal, when the throttle valve opening degree is changed.

REFERENCES:
patent: 2001-159574 (2001-06-01), None

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