Patent ID: 8165789
Filing Date: 2012-04-24
Classification: G01M,G07C

Abstract:
1. In a power plant including an engine, a powertrain control module, a catalytic converter, an O2 sensor before the catalytic converter, and an O2 sensor after the catalytic converter, a method of determining the efficiency of the catalytic converter with the aid of instrumentation including a microprocessor; the microprocessor being programmed to extract parameter identification data (hereinafter “PID data”), including O2 sensor PID data, from the powertrain control module; the microprocessor also being programmed with an algorithm which permits the determination of the efficiency of the catalytic converter; the method including the steps of: a. b. acquiring from the powertrain control module for PID data from the O2 sensor before the catalytic converter; c. acquiring from the powertrain control module for PID data from the O2 sensor after the catalytic converter; and d. determining the efficiency of the catalytic converter with the algorithm and the PID data from the O2 sensors before and after the catalytic converter.