Method for activation of the regeneration of a particulate...

Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...

Reexamination Certificate

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C060S274000, C060S286000, C060S297000, C060S311000, C701S103000, C701S115000, C703S005000, C703S008000, C073S118040

Reexamination Certificate

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07065960

ABSTRACT:
Method for activation of the regeneration of a particulate filter for a motor vehicle engine, comprising the steps of calculating an estimated value (xM) of a quantity of particulate accumulated in the particulate filter; comparing (8) the estimated value (xM) with a threshold value (mTH) corresponding to a predetermined maximum quantity of particulate; and activating the regeneration (9) if the estimated value (xM) exceeds the threshold value (mTH). The step of calculating an estimated value (xM) comprises the steps of estimating a first quantity of particulate (xMS) accumulated in the particulate filter by means of a statistical model (3) based on experimental data; estimating a second quantity of particulate (xMF) accumulated in the particulate filter by means of a physical model (2) using physical quantities measured; determining a field of admissibility on the basis of the first quantity of particulate (xMS); comparing the estimated value (xM) with the second quantity of particulate (xMF) if the second quantity of particulate (xMF) is within the field of admissibility; and limiting the estimated value (xM) if the second quantity of particulate (xMF) is outside the field of admissibility.

REFERENCES:
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Ponikakis et al., Dynamic Filtration Modeling in Foam Filters for Diesel Exhaust:; 2001, Chemical Engineering Communications, London, GB, pp. 1-26, XP002196576 ISSN: 0098-6445.

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