Abstract
Tampering is making inoperable or removing, any device or system, used to control emissions from a vehicle or engine. Tampering may include, but is not limited to: removing the Diesel Particulate Filter (DPF), drilling hole into the DPF, adjusting any functionality of a vehicle’s emission control, which is different from the manufacturer’s specifications, installation of a replacement part that is not certified on vehicle. Experimental investigations were done on tamper detection on a vehicle installed with a diesel particulate filter along with regeneration system. The temperature characteristics and characteristics of soot oxidation were used to indicate tampering. It could be concluded from the experimental investigations that the availability of oxygen and DPF soot loading affects temperature rise during soot oxidation and hence the temperature could be used as an effective method for detecting DPF tampering.
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