The aim of this research is to investigate the effect of air inlet temperature and boost pressure on the auto-ignition of fuels that have different CNs and volatilities in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30°C to 110°C at a constant intake pressure of 1.1 bar. The boost pressure is varied from 1.1 bar to 1.5 bar at a constant intake temperature of 60°C. All engine tests are run at steady-state conditions. The fuels used are ultra-low-sulfur-diesel (ULSD), JP-8 (two blends with CN 50 & 31) and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to track the effect of intake temperature and pressure on fuel evaporation, start of exothermic reactions, formation of different species and their significance in the auto-ignition process. CHEMKIN is used to study the chemical reactions under different equivalence ratio, pressure and temperatures. Special attention has been given to LT (low-temperature) and NTC (negative-temperature coefficient) regimes during the ignition delay period. Effect of intake pressure and temperature on these regimes has been studied in detail.
","abstract_html":"<p>The aim of this research is to investigate the effect of air inlet temperature and boost pressure on the auto-ignition of fuels that have different CNs and volatilities in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30°C to 110°C at a constant intake pressure of 1.1 bar. The boost pressure is varied from 1.1 bar to 1.5 bar at a constant intake temperature of 60°C. All engine tests are run at steady-state conditions. The fuels used are ultra-low-sulfur-diesel (ULSD), JP-8 (two blends with CN 50 & 31) and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to track the effect of intake temperature and pressure on fuel evaporation, start of exothermic reactions, formation of different species and their significance in the auto-ignition process. CHEMKIN is used to study the chemical reactions under different equivalence ratio, pressure and temperatures. Special attention has been given to LT (low-temperature) and NTC (negative-temperature coefficient) regimes during the ignition delay period. Effect of intake pressure and temperature on these regimes has been studied in detail.</p>","abstract_has_math":false,"creators":["Jayakumar, Chandrasekharan"],"institution":null,"degree_name":"Ph.D.","degree_level":"Open Access Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Naeim A. Henein"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-01-02T08:00:00Z","date_published":"2013-01-02T08:00:00Z","updated_at":"2026-07-24T05:59:26Z","subjects":["Alternate Fuels","Auto-ignition","CFD Simulation","Combustion","Combustion Chemsitry","Diesel","Engineering","Mechanical Engineering","Other Mechanical Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.wayne.edu/oa_dissertations/772","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Naeim A. Henein"]},{"key":"dc:creator","label":"Author","values":["Jayakumar, Chandrasekharan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2013-01-01T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Open Access Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Alternate Fuels","Auto-ignition","CFD Simulation","Combustion","Combustion Chemsitry","Diesel","Engineering","Mechanical Engineering","Other Mechanical Engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.wayne.edu/oa_dissertations/772"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The aim of this research is to investigate the effect of air inlet temperature and boost pressure on the auto-ignition of fuels that have different CNs and volatilities in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30°C to 110°C at a constant intake pressure of 1.1 bar. The boost pressure is varied from 1.1 bar to 1.5 bar at a constant intake temperature of 60°C. All engine tests are run at steady-state conditions. The fuels used are ultra-low-sulfur-diesel (ULSD), JP-8 (two blends with CN 50 & 31) and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to track the effect of intake temperature and pressure on fuel evaporation, start of exothermic reactions, formation of different species and their significance in the auto-ignition process. CHEMKIN is used to study the chemical reactions under different equivalence ratio, pressure and temperatures. Special attention has been given to LT (low-temperature) and NTC (negative-temperature coefficient) regimes during the ignition delay period. Effect of intake pressure and temperature on these regimes has been studied in detail.
"]},{"key":"dc:title","label":"Title","values":["Effect Of Intake Temperature And Boost Pressure On The Auto-Ignition Of Fuels With Different Cetane Numbers And Volatilities"]}]}],"canonical_facts":{"dc:contributor":["Naeim A. Henein"],"dc:creator":["Jayakumar, Chandrasekharan"],"dc:date.available":["2013-01-01T08:00:00Z"],"dc:description.abstract":["The aim of this research is to investigate the effect of air inlet temperature and boost pressure on the auto-ignition of fuels that have different CNs and volatilities in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30°C to 110°C at a constant intake pressure of 1.1 bar. The boost pressure is varied from 1.1 bar to 1.5 bar at a constant intake temperature of 60°C. All engine tests are run at steady-state conditions. The fuels used are ultra-low-sulfur-diesel (ULSD), JP-8 (two blends with CN 50 & 31) and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to track the effect of intake temperature and pressure on fuel evaporation, start of exothermic reactions, formation of different species and their significance in the auto-ignition process. CHEMKIN is used to study the chemical reactions under different equivalence ratio, pressure and temperatures. Special attention has been given to LT (low-temperature) and NTC (negative-temperature coefficient) regimes during the ignition delay period. Effect of intake pressure and temperature on these regimes has been studied in detail.
"],"dc:identifier":["https://digitalcommons.wayne.edu/oa_dissertations/772"],"dc:subject":["Alternate Fuels","Auto-ignition","CFD Simulation","Combustion","Combustion Chemsitry","Diesel","Engineering","Mechanical Engineering","Other Mechanical Engineering"],"dc:title":["Effect Of Intake Temperature And Boost Pressure On The Auto-Ignition Of Fuels With Different Cetane Numbers And Volatilities"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Open Access Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-24T05:59:26Z"}