Diagnostic system for internal combustion engine

Details Diagnostic system for internal combustion engine Diagnostic system for internal combustion engine

2005-10-18

2005-10-18

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S090150, C123S399000, C073S117020

Reexamination Certificate

active

06957141

ABSTRACT:
A diagnostic system for an internal combustion engine including a plurality of cylinder banks. The system includes a throttle position sensor mounted in each of the cylinder banks, for detecting a throttle opening of a throttle valve of an associated one of the cylinder banks. The throttle openings of the cylinder banks are controlled in accordance with a common target. An ECU makes a check to determine whether the detected throttle openings are same. The ECU determines in accordance with the comparison whether or not there is abnormality in at least one of the throttle valves and the throttle position sensors.

REFERENCES:
patent: 6877466 (2005-04-01), Shindou et al.
patent: 2004/0211393 (2004-10-01), Grau
patent: 43 32 098 (1995-03-01), None
patent: 2-176141 (1990-07-01), None

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