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LUND UNIVERSITY LIBRARIES

Planning of Experiments on Emissions of a Heavy Duty Direct Injection Spark Ignition Engine Fuelled with Methanol

Berg, Victor LU (2018) MVK920 20172
Department of Energy Sciences
Abstract
As greenhouse gas emissions are becoming a source of concern renewable fuels are becoming more and more interesting. Methanol is one such fuel. The main benefit of methanol is that it can be produced in two potentially carbon neutral ways. It can be produced from many sources of biomass, including wood, which makes it attractive in Sweden. In a long-term perspective it can also be produced from electrolysis of water into hydrogen and combined with carbon capture to form a so called electro-fuel.
Methanol also have several attributes that make it suitable for use as a fuel in a direct injection spark ignition engine. The high octane number allows increased compression ratios or boost pressures, leading to downsizing and efficiency... (More)
As greenhouse gas emissions are becoming a source of concern renewable fuels are becoming more and more interesting. Methanol is one such fuel. The main benefit of methanol is that it can be produced in two potentially carbon neutral ways. It can be produced from many sources of biomass, including wood, which makes it attractive in Sweden. In a long-term perspective it can also be produced from electrolysis of water into hydrogen and combined with carbon capture to form a so called electro-fuel.
Methanol also have several attributes that make it suitable for use as a fuel in a direct injection spark ignition engine. The high octane number allows increased compression ratios or boost pressures, leading to downsizing and efficiency benefits. It also has a high tolerance to EGR and lean conditions, which is thought to help reduce pumping losses. Low load pumping losses are a major source of inefficiency in SI engines.
An attempt is made to find the most promising area for further research. Earlier results show that emission regulations will not be met with a lean combustion concept without exhaust after treatment systems. Stoichiometric combustion in combination with high EGR and a high compression ratio and a three-way catalyst is proposed as suitable concept to reach low tailpipe emissions.
A time efficient experiment plan for a pilot study, divided into three different campaigns, is developed. The first campaign establishes a stoichiometric baseline. Once a good starting point is established a second campaign investigates EGR. Finally, the last campaign is proposed to repeat the results for lean combustion to make results comparable to earlier research. (Less)
Please use this url to cite or link to this publication:
author
Berg, Victor LU
supervisor
organization
course
MVK920 20172
year
type
H2 - Master's Degree (Two Years)
subject
report number
LUTMDN/TMHP-18/5421-SE
ISSN
0282-1990
language
English
id
8952977
date added to LUP
2018-06-26 13:03:36
date last changed
2018-06-26 13:03:36
@misc{8952977,
  abstract     = {{As greenhouse gas emissions are becoming a source of concern renewable fuels are becoming more and more interesting. Methanol is one such fuel. The main benefit of methanol is that it can be produced in two potentially carbon neutral ways. It can be produced from many sources of biomass, including wood, which makes it attractive in Sweden. In a long-term perspective it can also be produced from electrolysis of water into hydrogen and combined with carbon capture to form a so called electro-fuel. 
Methanol also have several attributes that make it suitable for use as a fuel in a direct injection spark ignition engine. The high octane number allows increased compression ratios or boost pressures, leading to downsizing and efficiency benefits. It also has a high tolerance to EGR and lean conditions, which is thought to help reduce pumping losses. Low load pumping losses are a major source of inefficiency in SI engines. 
An attempt is made to find the most promising area for further research. Earlier results show that emission regulations will not be met with a lean combustion concept without exhaust after treatment systems. Stoichiometric combustion in combination with high EGR and a high compression ratio and a three-way catalyst is proposed as suitable concept to reach low tailpipe emissions.
 A time efficient experiment plan for a pilot study, divided into three different campaigns, is developed. The first campaign establishes a stoichiometric baseline. Once a good starting point is established a second campaign investigates EGR. Finally, the last campaign is proposed to repeat the results for lean combustion to make results comparable to earlier research.}},
  author       = {{Berg, Victor}},
  issn         = {{0282-1990}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Planning of Experiments on Emissions of a Heavy Duty Direct Injection Spark Ignition Engine Fuelled with Methanol}},
  year         = {{2018}},
}