Planning of Experiments on Emissions of a Heavy Duty Direct Injection Spark Ignition Engine Fuelled with Methanol
(2018) MVK920 20172Department 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:
http://lup.lub.lu.se/student-papers/record/8952977
- author
- Berg, Victor LU
- supervisor
- organization
- course
- MVK920 20172
- year
- 2018
- 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}}, }