Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2008-01-15
2008-01-15
Wolfe, Willis R. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C073S023320, C060S280000
Reexamination Certificate
active
07319928
ABSTRACT:
A method for real-time determination of the mass of particles in a particle filter fitted to the exhaust line of an internal combustion engine. The following data—temperature T(t) of the exhaust gas at the filter input, oxygen [O2(t)] and nitrogen oxide [NOx(t)] concentration of the exhaust gases entering the filter—is used to calculate the rate of combustion of the particles in the particle filter with the aid of kinetic laws of chemical reactions of particle combustion. The rate, the rate emission of particles from the engine F(t), and the mass of particles in the filter mc(t−Δ,.t) obtained during the cycle of operations prior to the moment t−Δt, is then used to calculate the mass of particles in the filter, mc(t):=mc(t−Δt)+[F(t) V(t)]*Δt.
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Bert Christian
Hodjati Shahin
Hoang Johnny H.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Renault S.A.S.
Wolfe Willis R.
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