A comparative study of diesel ignited methane and propane dual fuel low temperature combustion in a single cylinder research engine

• Main Author: Raihan, Mostafa Shameem
• Other Authors: Sundar R. Krishnan
• Format: Others
• Language: en
• Published: MSSTATE 2014
• Subjects: Mechanical Engineering
• Online Access: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10292014-125929/

<p>The objective of this thesis is to investigate and compare the performance and emissions characteristics of diesel-ignited methane and diesel-ignited propane dual fuel LTC in a single cylinder research engine (SCRE) at a constant engine load of 5.1 bar <i>net</i> indicated mean effective pressure (IMEP) and at a constant engine speed of 1500 RPM. Percentage of energy substitution of propane or methane (0 - 90 percent), diesel injection timing (SOI: 355 CAD 280 CAD), rail pressure (200 bar 1300 bar) and boost pressure (1.1 bar 1.8 bar) were varied to quantify their impact on engine performance and engine-out ISNOx, ISHC, ISCO, and smoke emissions. Advancing SOI to 310 CAD and beyond yielded simultaneous ISNOx and smoke emissions. A rail pressure of 500 bar was the optimal one for both fueling combinations while increasing boost pressure over 1.2 bar had a very little effect on ISNO_x and smoke emissions.</p>