Document Type
Patent
Publication Date
8-6-2009
Abstract
A control module and method for an exhaust system of an engine can include a secondary air intake (SAI) pressure module that monitors SAI pressure. An accumulation module can accumulate an SAI string length based on the monitored SAI pressure. A calculation module can determine an average SAI string length based on the accumulated SAI string length. A determination module can determine an operating characteristic of the vehicle exhaust based on the average SAI string length.
Patent Number
20090198457
Rights
GM Global Technology
Recommended Citation
Mac Ewen, Ian J.; Hall, Martin L.; Murray, Lawrence O.; Grow, Julia C.; Van Camp, Richard; Prout, David Edward; and Anilovich, Igor, "Algorithm to Diagnose Leaks or Blockages Downstream of the Secondary Air Injection Reaction (SAIR) Pressure Sensor" (2009). Physics Patents. 3.
https://digitalcommons.kettering.edu/physics_patents/3
