Patent Number: 7,100,571

Title: Method and apparatus for controlling engine

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.

Inventors: Hasegawa; Shumpei (Saitama, JP)

Assignee: Honda Motor Co., Ltd.

International Classification: F02D 41/22 (20060101); G01M 15/00 (20060101)

Expiration Date: 9/05/02018