Výsledky vyhledávání - "Cosmin E. Dumitrescu"

Numerical Investigation of a Heavy-Duty CI Engine Converted to Ammonia SI Operation

Autor: Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu

Publikováno v: Journal of Engineering for Gas Turbines and Power. :1-41

Global decarbonization requires the increased use of zero-carbon fuels. Compared to hydrogen, ammonia is easier to store, transport, and produce. In addition, products of complete combustion of ammonia are water and nitrogen. Therefore, ammonia is an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5df21344d2f879c10f0e2f7e0fc14ce
https://doi.org/10.1115/1.4062418

Zobrazit plný text záznamu

Numerical Investigation of a Heavy Duty Compression Ignition Engine Converted to Ammonia Spark Ignition Operation

Autor: Jinlong Liu, Christopher Ulishney, Cosmin E. Dumitrescu

Publikováno v: ASME 2022 ICE Forward Conference.

The need for global decarbonization in power generation requires the increased use of zero-carbon fuels. Compared to hydrogen, ammonia is easier to store, transport, and produce. In addition, the products of complete combustion of ammonia are water a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b186fe93b5988263ae01784160e3e9a2
https://doi.org/10.1115/icef2022-88071

Zobrazit plný text záznamu

On the use of artificial neural networks to model the performance and emissions of a heavy-duty natural gas spark ignition engine

Autor: Cosmin E. Dumitrescu, Qiao Huang, Christopher Ulishney, Jinlong Liu

Publikováno v: International Journal of Engine Research. 23:1879-1898

The use of computational models for internal combustion engine development is ubiquitous. Numerical simulations using simpler to complex physical models can predict engine’s performance and emissions, but they require large computational capabiliti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::485656394d74e6345a794e81b0bbaad5
https://doi.org/10.1177/14680874211034409

Zobrazit plný text záznamu

Comparison of Random Forest and Neural Network in Modeling the Performance and Emissions of a Natural Gas Spark Ignition Engine

Autor: Jinlong Liu, Qiao Huang, Christopher Ulishney, Cosmin E. Dumitrescu

Publikováno v: Journal of Energy Resources Technology. 144

Machine learning (ML) models can accelerate the development of efficient internal combustion engines. This study assessed the feasibility of data-driven methods toward predicting the performance of a diesel engine modified to natural gas (NG) spark i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79326060c322848d53d15d2ea8ed2748
https://doi.org/10.1115/1.4053301

Zobrazit plný text záznamu

Optical and Numerical Investigations of Flame Propagation in a Heavy Duty Spark Ignited Natural Gas Engine

Autor: Christopher Ulishney, Jinlong Liu, Cosmin E. Dumitrescu

Publikováno v: ASME 2021 Internal Combustion Engine Division Fall Technical Conference.

Increasing the natural gas (NG) use in heavy-duty engines is beneficial for reducing greenhouse-gas emissions from power generation and transportation. However, converting compression ignition (CI) engines to NG spark ignition operation can increase

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc1037939fc7a81091404ff68da54357
https://doi.org/10.1115/icef2021-67489

Zobrazit plný text záznamu

Predicting the Combustion Phasing of a Natural Gas Spark Ignition Engine Using the K-Nearest Neighbors Algorithm

Autor: Christopher Ulishney, Cosmin E. Dumitrescu, Jinlong Liu

Location of the peak cylinder pressure and the crank angle associated with half of the energy releases during the combustion process are generally used to define the engine combustion phasing and control the engine efficiency. To accelerate the optim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73637d99beb2c2caad449175e65d9958
https://doi.org/10.1115/1.0004369v

Zobrazit plný text záznamu

Lessons From the Conversion of a Heavy-Duty Compression Ignition Engine to Natural Gas Spark Ignition Operation

Autor: Christopher Ulishney, Cosmin E. Dumitrescu, Jinlong Liu

Partial conversion of the large inventory of compression-ignition engines to natural-gas (NG) spark-ignition lean-burn operation can reduce U.S. dependence on imported petroleum and enhance national energy security. This paper describes some of the o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a75acc6f65243e5ff6d4175db7bf971
https://doi.org/10.1115/1.0004397v

Zobrazit plný text záznamu

Improving Machine Learning Model Performance in Predicting the Indicated Mean Effective Pressure of a Natural Gas Engine

Autor: Christopher Ulishney, Jinlong Liu, Cosmin E. Dumitrescu

Converting existing compression ignition engines to spark ignition approach is a promising approach to increase the application of natural gas in the heavy-duty transportation sector. However, the diesel-like environment dramatically affects the engi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90a36fe1e90899b8ac8072dc350b8743
https://doi.org/10.1115/1.0003750v

Zobrazit plný text záznamu

Hydrogen-Rich Syngas Production through Synergistic Methane-Activated Catalytic Biomass Gasification

Autor: Cosmin E. Dumitrescu, Qingyuan Li, Jianli Hu, Amoolya Lalsare, Yuxin Wang, Ali C. Sivri, Roman J. Vukmanovich

Publikováno v: ACS Sustainable Chemistry & Engineering. 7:16060-16071

The abundance of natural gas and biomass in the U.S. was the motivation to investigate the effect of adding methane to catalytic nonoxidative high-temperature biomass gasification. The catalyst use...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e44065cb15b8274c4aa30c2f79deeb9b
https://doi.org/10.1021/acssuschemeng.9b02663

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání