Method for operating an internal combustion engine, the...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

Reexamination Certificate

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Details

C701S102000, C701S107000, C701S115000, C123S387000, C123S382000, C123S406170, C123S406220, C073S117020, C073S118040

Reexamination Certificate

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06871135

ABSTRACT:
The invention is directed to a method for operating an internal combustion engine (1) wherein a fault of a pressure system with a pressure sensor (14) is determined by a first diagnostic system (14′) of the engine (1). The pressure sensor (14) is especially a pressure sensor of a high pressure fuel system of the engine. For a plausibility consideration of a pressure system fault, which is determined by the first diagnostic system (14′), at least one further diagnostic system (18′) of the engine (1) is checked as to a second fault.

REFERENCES:
patent: 6651491 (2003-11-01), Saito et al.
patent: 6691023 (2004-02-01), Fujino et al.
patent: 6754611 (2004-06-01), Nagashima et al.
patent: 20040074453 (2004-04-01), Roelle et al.

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