Denoxtronic 5.3 – A modular system for applications worldwide

Authors

Dipl.-Ing. Michael Raff, Dipl.-Ing. Erik Weingarten, Dipl.-Ing. Manuel Muslija, Robert Bosch GmbH

Year

2019

Summary

Diesel engines will play an important part to reach future CO₂-limits for on-road mobility in the passenger car (PC) and light duty (LD) segment. High efficiency and compliance with new emission legislations are drivers for further improvements of the technology for markets like Europe with EURO 6, enforced by introduction of European Real Driving Emissions in two steps (mid 2017 & beginning of 2020), but also China (CHINA 6) and India (Bharat Stage VI), where comparable legislations will be implemented in 2020.
One major engineering target for the Diesel powertrains is to minimize nitrogen-oxide emissions. This is possible with selective catalytic reduction catalysts (SCR) and active dosing of aqueous urea solution (Diesel Exhaust Fluid DEF or AdBlue^®). Configurations of exhaust gas treatment (EGT) – a combination of SCR with Diesel oxidation catalyst (DOC) / NOx storage catalyst (NSC) and Diesel particulate filter (DPF) – will vary depending on market and vehicle segment needs.
This diversity of layouts has been taken into account during the development of the next generation AdBlue^®-Dosing system of Bosch (Denoxtronic): A modularity of systems, software and a modular component approach enable a perfect fit from Indian 4-wheeler two-cylinder applications up to high-performance applications with double-injection-SCR systems.
This next step in evolution of the 3^rd generation Denoxtronic of Bosch including innovative system and software function aspects is presented.

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