Open AccessAnalysis of an automotive thermoelectric generator coupled to an electric exhaust heater to reduce NOx emissions in a Diesel-powered Euro VI Heavy Duty vehicle
Author(s) -
Albert Massaguer,
Eduard Massaguer,
Joan Ximinis,
Toni Pujol,
M. Comamala,
Lino Montoro,
José Ramón Perán González,
Pablo Fernández-Yáñez,
Octavio Armas
Publication year - 2021
Publication title -
renewable energy and power quality journal
Language(s) - English
Resource type - Journals
ISSN - 2172-038X
DOI - 10.24084/repqj19.305
Subject(s) - automotive engineering , nox , diesel fuel , environmental science , automotive industry , powertrain , truck , heavy duty , exhaust gas , exhaust gas recirculation , waste management , engineering , internal combustion engine , chemistry , aerospace engineering , combustion , physics , organic chemistry , torque , thermodynamics
This study presents a new approach to minimize the amount of NOx emitted by diesel engines of Heavy-Duty Vehicles during low engine regimes and low gases temperature conditions. We propose the addition of an electric Exhaust Gas Heater (EGH) to make the SCR system inject the urea solution at low engine regimes. The second part of this study focuses on the viability to use an Automotive Thermoelectric Generator (ATEG) to generate the energy required by the EGH and thus avoiding the need to consume electrical energy from the vehicle’s system. This EGHATEG system is designed to be energetically closed, so there is no extra consumption of fuel. Experimental results show that NOx emissions reduce up to 80% when an EGH is added to a standard diesel-powered Euro VI Heavy Duty truck configuration. Simulations show that an ATEG installed downstream of the aftertreatment system can produce the energy required by the EGH. This system can improve SCR efficiency up to 55% during low engine regimes.