Monitoring exhaust gas transport system. e.g. pipe

摘要

The vol. flow of the gas is measured in the exhaust gas pipes. The press. for a fully open control valve state is determined from the characteristic of the control valve at the exhaust gas output an the current total vol. flow in the system. The maximum press. loss for maximum total vol. flow is determined, represented as a function of time and compared with the maximum permissible press. loss. If the maximum press. loss approaches the maximum permissible value, the part of the exhaust gas system with the greatest press. loss, as determined over a period from the mean vol. flow, is cleaned.