Thomas Robert Buchhop - Canton MI Randall D'Alleva - St. Clair Shores MI Ronald Keith Darnell - Ortonville MI Jack Ryan Little - Metamora MI Curtis Thomas Pedersen - Fenton MI
Assignee:
ANR Pipeline Company - Detroit MI
International Classification:
G06G 770 F02C 900 F02B 4708
US Classification:
364431062
Abstract:
A parametric emissions monitoring system for monitoring stationary engine/compressor units coupled to a pipeline provides, in a reciprocating embodiment, reliable and accurate determinations of emission levels for NO. sub. x, CO, and total hydrocarbons (THC) from an emissions matrix primarily as a function of engine speed and engine torque. Validation of the determined emissions level is provided by comparing the values of a set of actual engine operating parameters with a respective value in a set of calculated engine operating parameters to determine whether the deviation of the actual operating parameter from the expected operating parameter is within a defined range, and thus whether the engine is operating within a defined control envelope. Each set of engine operating parameters includes spark ignition timing, fuel rate, and air manifold pressure. 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 being assessed against the NO. sub.