Abstract
<div class="section abstract"><div class="htmlview paragraph">Heavy duty hydrogen (H<sub>2</sub>) internal combustion engines (ICEs), typically conversions from base diesel engines, can experience significant deterioration of combustion efficiency with enleanment despite relative engine stability due in part to non-optimized combustion chamber geometry for spark ignited (SI) combustion. This causes un-combusted H<sub>2</sub> to “slip” into the exhaust largely undetected since it is not a typically measured exhaust species. In this study, several implications of H<sub>2</sub> slip in H<sub>2</sub> ICEs are explored. The sensitivity of air fuel ratio (AFR) measurement to H<sub>2</sub> slip is discussed. The challenge this poses for closed-loop transient controls and the impact on nitrogen oxides (NOx) emissions are also shown. Finally, test results from an H<sub>2</sub> ICE using an active pre-chamber highlight the improvement in combustion efficiency and transient stability relative to a baseline SI engine.</div></div>
Publisher
Society of Automotive Engineers of Japan
Reference25 articles.
1. Rieger , D. , Mayer , F. , Weller , F. , et al. Experimental investigation of a hydrogen powered heavy-duty truck engine 9th International Engine Congress Baden-Baden 2022
2. Thomas Koch , D. , Sousa , A. , and Bertram , D. H 2 -Engine Operation with EGR Achieving High Power and High Efficiency Emission-Free Combustion SAE Technical Paper 2019-01-2178 2019 10.4271/2019-01-2178
3. Luo , Q. , Sun , B. Inducing factors and frequency of combustion knock in hydrogen internal combustion engines Intl. J. of Hydrogen Energy 41 36 2016 10.1016/j.ijhydene.2016.05.257
4. Walter , L. , Sommermann , A. , Hyna , D. , et al. The H 2 Combustion Engine – The Forerunner of a Zero Emissions Future 42nd International Vienna Motor Symposium Vienna 2021
5. Peters , N. and Bunce , M. Lambda Determination Challenges for Ultra-Lean Hydrogen-Fueled Engines and the Impact on Engine Calibration SAE Technical Paper 2023-01-0286 2023
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