Method for operating an internal combustion engine and...

Details Method for operating an internal combustion engine and... Method for operating an internal combustion engine and...

2006-01-10

2010-02-23

Nguyen, Tu M (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S277000, C060S295000, C060S324000

Reexamination Certificate

active

07665295

ABSTRACT:
A method is provided for operating an internal combustion engine in whose exhaust-gas region an exhaust-gas treatment device is situated, and in which a reagent is introduced into the exhaust-gas region of the internal combustion engine. in addition, a device is provided for implementing the method. The reagent pressure occurring between a reagent safety valve and a reagent dosing valve, disposed directly in the exhaust-gas region is recorded during different states of the reagent safety valve and/or the reagent dosing valve and compared to at least one threshold value. If the threshold is exceeded, a fault signal is provided. This may offer high safety which may be of particular importance when fuel is used as reagent.

REFERENCES:
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patent: 101 59 849 (2003-06-01), None
patent: 10 2004 018 221 (2005-11-01), None

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