System to monitor the efficiency on a catalytic converter, in particular for motor vehicules

• Main Authors: ARONICA, ANTONINO, CIASULLO, MARCO, CARNEVALE, CLAUDIO
• Format: Patent
• Language: English; French; German
• Published: 05.06.1996
• Edition: 6
• 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

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 integra...