Patent ID: 6079251
Filing Date: 2000-06-27
Classification: F01N,G01M,Y02T

Abstract:
A method for monitoring the exhaust emissions of a combustion engine, the method comprising the steps of:(a) inserting a gas probe in the exhaust system of the engine, the probe being coupled to a gas analyzer capable of measuring gas concentration in the exhaust emissions of the engine, the gas analyzer comprising at least one gas sensor for sensing at least one gas;(b) running the engine at operating temperature, and stabilizing the exhaust gas temperature to a maximum value with a 60 second engine stall-smoke density test;(c) initiating data collection from the gas analyzer for a period of time and at a rate sufficient to obtain a substantially constant concentration of gas measured in the exhaust emissions; and(d) processing the data collected in step (c) with processing means coupled to the gas analyzer, and displaying processed data in real time on display means coupled to the processing means, thereby allowing an operator to follow data collection and exhaust emissions monitoring through a progress window; and(e) storing the processed data in storing means.