Exhaust Catalyst and Exhaust System: Notes
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The exhaust catalyst and exhaust system consists of the following components. For additional component information, refer to ENGINE CONTROL COMPONENTS .
- Four exhaust gas temperature (EGT) sensors that measure the exhaust gas temperature.
- An oxidation catalytic converter (OC) that reduces emissions and assists in diesel particulate filter regeneration.
- A selective catalytic reduction (SCR) catalyst that chemically reduces nitrogen oxides (NOx) to nitrogen (N2) and water (H2O).
- A reductant injector that sprays diesel exhaust fluid (DEF) into the exhaust system as a component of the NOx reduction reaction.
- A diesel particulate filter pressure sensor that measures the gauge pressure of the exhaust gas before the diesel particulate filter.
- A diesel particulate filter that traps soot and ash particulates.
- A NOx sensor that detects levels of NOx in the exhaust stream, to monitor SCR efficiency.