SISTEMA PARA DETECTAR EL GRADO DE EFICACIA DE UN CATALIZADOR, EN PARTICULAR, PARA VEHICULOS A MOTOR

• Main Authors: ARONICA, ANTONINO, CIASULLO, MARCO, CARNEVALE, CLAUDIO
• Format: Patent
• Language: Spanish
• Published: 16.02.2001
• Edition: 7
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

LA EFICIENCIA DE UN CATALIZADOR (C) SE EVALUA PARTIENDO DE LAS SEÑALES DE SALIDA (S7, S8) DE DOS SONDAS LAMBDA (L1, L2) DISPUESTAS CORRIENTE ARRIBA Y CORRIENTE ABAJO RESPECTIVAMENTE DEL CATALIZADOR (C). EN PARTICULAR, SE UTILIZA UNA SEÑAL OBTENIDA CALCULANDO LA DIFERENCIA ENTRE LAS MEDIAS DE LOS TIEMPOS (V1, V2) OBTENIDAS POR INTEGRACION Y DIVISION SUBSECUENTE PARA LA DURACION DE UNA VENTANA DE INTEGRACION DE LAS SEÑALES DE SALIDA (S7, S8) DE ESTAS SONDAS (L1, L2), COMO SEÑAL INDICATIVA DE LA EFICIENCIA. The efficiency of a catalyser (C) is evaluated starting from output signals (S7, S8) of two lambda probes (L1, L2) disposed upstream and downstream respectively of the catalyser (C). In particular, a signal obtained by calculating the difference between the time averages (V1, V2) obtained by integration and subsequent division for the duration of an integration window of output signals (S7, S8) of these probes (L1,L2) is used as the signal indicative of efficiency.