Method and apparatus for controlling engine

Details Method and apparatus for controlling engine Method and apparatus for controlling engine

2006-09-05

2006-09-05

Huynh, Hai (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S479000, C073S118040, C701S107000

Reexamination Certificate

active

07100571

ABSTRACT:
To provide a value to be replaced for an output of a manifold pressure sensor in case of failure of the manifold pressure sensor for detecting a manifold pressure for calculating the amount of fuel injection. An abnormality determination unit outputs an abnormal signal when an output voltage of a manifold pressure sensor is not within a predetermined range. A manifold pressure estimating unit calculates an estimated manifold pressure value on the basis of the engine revolution, a throttle opening, and an atmospheric pressure. The manifold pressure estimating unit uses the estimated value as a substitute value of the output of the manifold pressure sensor and continues to control the engine when the manifold pressure sensor has failed.

REFERENCES:
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patent: 6508111 (2003-01-01), Osaki et al.
patent: 6779390 (2004-08-01), Osaki et al.
patent: 6877471 (2005-04-01), Tanabe et al.
patent: 2731050 (1996-08-01), None
patent: 2001-159574 (2001-06-01), None
patent: 2003-307152 (2003-10-01), None

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