Advanced Combustion Analysis: The development of an advanced combustion analysis tool
| dc.contributor.author | Ahmed, Aijaz | |
| dc.contributor.author | Edholm, Oskar | |
| dc.contributor.author | Lutimath, Ajanish | |
| dc.contributor.author | Raj, Avanish | |
| dc.contributor.author | Tagesson, Filip | |
| dc.contributor.department | Chalmers tekniska högskola // Institutionen för mekanik och maritima vetenskaper | sv |
| dc.contributor.examiner | Sjöblom, Jonas | |
| dc.contributor.supervisor | Sjöblom, Jonas | |
| dc.contributor.supervisor | Koopmans, Lucien | |
| dc.contributor.supervisor | Ahmed, Ahfaz | |
| dc.date.accessioned | 2021-03-16T14:34:44Z | |
| dc.date.available | 2021-03-16T14:34:44Z | |
| dc.date.issued | 2021 | sv |
| dc.date.submitted | 2020 | |
| dc.description.abstract | The main purpose of this project is to study and investigate advanced combustion analysis in compression-ignited (CI) and spark-ignited (SI) engines. A MATLAB code will be developed as the major deliverable, which will calculate the (apparent and real) rate of heat release with the provision of different, effective intake valve closing, heat transfer models, blow-by loss and gas properties with automatic polytropic coefficient detection. This code will also be used to compare and validate the different zero level corrections with commercial data acquisition software by Dewesoft (stakeholder for this project). For the study a 6-cylinder CI engine and am SI engine at Chalmers is used to record the in-cylinder pressure. Measurements of the in-cylinder pressure accurately plays an important role in pressure trace analysis. In this project, the experimental data like raw cylinder pressure and crank angle degree is recorded with the Dewesoft data acquisition system. Along with the recorded data, data from other test cells were also collected which was further analyzed and processed through the MATLAB code developed. After the investigation, the common assumption of constant values of certain parameters, such as IVC effective, constant polytropic coefficient, temperature at IVC, wall temperature, heat transfer loss and blow-by loss was found to skew the data significantly, thus giving incorrect results. Further, in-depth analysis for each of the above parameters is done and function scripts were developed and integrated into the main MATLAB program. The major findings are that the commercial combustion analyzer software’s usually considers a constant polytropic coefficient and also performs an apparent rate of heat release, thus neglecting the heat transfer and blow-by losses. But in reality, the polytropic coefficient varies and the heat transfer and blow-by loss do contribute and affect the amount of heat energy liberated during combustion. The results from the analysis of the data’s influence on the heat release is presented in the report. | sv |
| dc.identifier.coursecode | TME180 | sv |
| dc.identifier.uri | https://hdl.handle.net/20.500.12380/302266 | |
| dc.language.iso | eng | sv |
| dc.relation.ispartofseries | 2021:06 | sv |
| dc.subject | Combustion | sv |
| dc.subject | Analysis | sv |
| dc.subject | Heat release | sv |
| dc.title | Advanced Combustion Analysis: The development of an advanced combustion analysis tool | sv |
| dc.type.degree | Projektarbete, avancerad nivå | sv |