| 摘要 |
<p>A parametric emissions monitoring system (15) for monitoring stationary engine/compressor units (50, 52) coupled to a pipeline provides, in a reciprocating embodiment, reliable and accurate determinations of emission levels for NOx, CO, and total hydrocarbon (THC) from an emissions matrix (169) primarily as a function of engine speed (102) and engine torque. Validation of the determined emissions level is provided by comparing (116) the values of a set of actual engine operating parameters (112) with a respective value in a set of calculated engine operating parameters (114) to determine whether the deviation of the actual operating parameter from the expected operating parameter is within a defined range (118), and thus whether the engine is operating within a defined control envelope. When the comparison indicates that the actual engine operating parameters diverge from the respective expected engine operating parameter, the emissions are determined from the emissions matrix, and are subjected to a bias factor, the bias factor depending on the severity of the deviation.</p> |
