Advanced

Inductive heating of exhaust aftertreatment system

Nilsson, Ludvig LU and Karlsson, Kim LU (2018) MMTM01 20171
Production and Materials Engineering
Abstract
Heavy trucks are commonly powered by combustion engines running on
diesel. Since these trucks often run on highways they rarely have to perform cold starts. Diesel engines take care of their NOx emissions through a process which uses the high temperatures of the exhaust gases together with urea, sprayed upon a mixer placed inside the exhaust pipes, to chemically react with the NOx over an SCR catalyst. With hybrid drivetrains increasing in popularity and their inherent increased frequency of cold starts the NOx treatment at cold starts has become a problem that needs to be solved since the reaction need to reach a critical temperature to occur. This study uses physics simulations and the building of a prototype to evaluate the... (More)
Heavy trucks are commonly powered by combustion engines running on
diesel. Since these trucks often run on highways they rarely have to perform cold starts. Diesel engines take care of their NOx emissions through a process which uses the high temperatures of the exhaust gases together with urea, sprayed upon a mixer placed inside the exhaust pipes, to chemically react with the NOx over an SCR catalyst. With hybrid drivetrains increasing in popularity and their inherent increased frequency of cold starts the NOx treatment at cold starts has become a problem that needs to be solved since the reaction need to reach a critical temperature to occur. This study uses physics simulations and the building of a prototype to evaluate the possibilities of solving this problem by heating the mixer through induction heating. This report shows the possibility given a number of key changes that need to be made in order to allow for the mixer to heat the exhaust gases at cold starts. (Less)
Please use this url to cite or link to this publication:
author
Nilsson, Ludvig LU and Karlsson, Kim LU
supervisor
organization
course
MMTM01 20171
year
type
H2 - Master's Degree (Two Years)
subject
keywords
induction heating, exhaust aftertreatment, nox reduction
report number
LUTMDN/(TMMV-5295)/1-86/2018
language
English
id
8931870
date added to LUP
2018-01-11 15:46:04
date last changed
2018-01-23 11:05:17
@misc{8931870,
  abstract     = {Heavy trucks are commonly powered by combustion engines running on
diesel. Since these trucks often run on highways they rarely have to perform cold starts. Diesel engines take care of their NOx emissions through a process which uses the high temperatures of the exhaust gases together with urea, sprayed upon a mixer placed inside the exhaust pipes, to chemically react with the NOx over an SCR catalyst. With hybrid drivetrains increasing in popularity and their inherent increased frequency of cold starts the NOx treatment at cold starts has become a problem that needs to be solved since the reaction need to reach a critical temperature to occur. This study uses physics simulations and the building of a prototype to evaluate the possibilities of solving this problem by heating the mixer through induction heating. This report shows the possibility given a number of key changes that need to be made in order to allow for the mixer to heat the exhaust gases at cold starts.},
  author       = {Nilsson, Ludvig and Karlsson, Kim},
  keyword      = {induction heating,exhaust aftertreatment,nox reduction},
  language     = {eng},
  note         = {Student Paper},
  title        = {Inductive heating of exhaust aftertreatment system},
  year         = {2018},
}