Internal combustion engines (ICEs) are essential for the welfare of today’s human
civilization yet they contribute to almost 10% of the global CO2 emissions. Reducing
the carbon footprint of the ICEs can be achieved by either increasing the engine
efficiency to reduce fuel consumption or the utilization of carbon-neutral fuels. This
dissertation aims to investigate the effect of the oxidizer composition on the efficiency
and performance of the homogenous charge compression ignition (HCCI) engine. It
also aims to study the behavior of hydrogen in HCCI engines. The experiments are
conducted using a Cooperative Fuel Research (CFR) engine. The study also involves
using chemical kinetics simulations to estimate the ignition delay time of hydrogen
which is relevant to the HCCI mode of combustion. The results suggest that the specific
heat ratio of the oxidizer does not significantly affect the HCCI engine efficiency. On
the fuel side, hydrogen showed high sensitivity to engine running conditions due to
the lack of negative temperature coefficient (NTC).
| Identifer | oai:union.ndltd.org:kaust.edu.sa/oai:repository.kaust.edu.sa:10754/680776 |
| Date | 04 1900 |
| Creators | Mohammed, Abdulrahman |
| Contributors | Sarathy, Mani, Physical Science and Engineering (PSE) Division, Johansson, Bengt, Hoteit, Ibrahim, Taylor, Alex, Turner, James W. G. |
| Source Sets | King Abdullah University of Science and Technology |
| Language | English |
| Detected Language | English |
| Type | Dissertation |
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