Control apparatus for an internal combustion engine

Details Control apparatus for an internal combustion engine Control apparatus for an internal combustion engine

2007-01-23

2007-01-23

Dolinar, Andrew M. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S406130, C123S479000, C073S001590, C073S118040

Reexamination Certificate

active

11214994

ABSTRACT:
A control apparatus for an internal combustion engine can detect a tubing disconnection failure of an intake pressure sensor thereby to make it possible to give a warning to a user and to take appropriate measures to cope with such a failure situation. A control unit controls the engine based on a throttle opening, an intake pressure measured by an intake pressure sensor, and a rotational speed and a crank angle of the engine. The intake pressure sensor is connected to the intake system through tubing. The control unit includes a failure diagnosis section that detects an abnormality of the intake pressure sensor. The failure diagnosis section detects an open circuit or a short circuit of a signal line between the intake pressure sensor and the control unit based on a change in the intake pressure, and also detects a disconnection failure of the tubing of the intake pressure sensor.

REFERENCES:
patent: 4483299 (1984-11-01), Otobe et al.
patent: 6588259 (2003-07-01), Lodise et al.
patent: 2002-295300 (2002-10-01), None

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