Technical Service Bulletin To: All Dinex Customers From: Product Management and Technical Support, Dinex Emission Inc. Subject: SCR Inlet Temperature Sensor Location Change on EPA10/EPA14 Dinex OneBoxes Due to patents on the OEM OneBox, Dinex’s OneBox was designed with a flow that is different than the OEM ( Figure 1 ). The Dinex OneBox’s flow runs from the final SCR/ASC into a transfer pipe that leads to the outlet pipe. This caused the inlet temperature sensor to not be as accurate as possible in the same location as the OE OneBox. PARTICLE FLOW Diesel Oxidation Catalyst (DOC) NOx CO PM HC Diesel Particulate Filter (DPF) DEF hydrolysis chamber Selective Catalytic Reduction (SCR) Catalyst H 2 O N 2 Coated with N Dinex in-house technology Figure 1 After extensive testing in Dinex’s R&D center, the decision was made to make a change to the design moving the inlet temperature from the left-hand side of the SCR/ASC to the right-hand side ( Figure 2 ). This change was made in order to allow the sensor to give a more accurate inlet temperature reading. Old stock and new stock will both function in the required parameters. The change just offers a more accurate temperature measurement. Page 1 of 2 Figure 2
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