Results 21 to 30 of about 291 (183)

Condition of SI-CI Operation with Lean Mixture of Primary Reference Fuel and Hydrogen

International Journal of Automotive Engineering, 2011
In order to control the heat-release rate at homogeneous charge compression ignition (HCCI) operation, the feasibility of spark-assisted compression ignition (SI-CI) combustion was demonstrated with lean mixture of primary reference fuel (PRF) and ...
Sopheak Rey, Haruo Morishita, Nobuhiro Aoyama, Toru Noda, Masahiro Shioji   +4 more
doaj   +1 more source

A Review of Early Injection Strategy in Premixed Combustion Engines

Applied Sciences, 2019
Due to the increasing awareness of environmental protection, limitations on exhaust emissions of diesel engines have become increasingly stringent. This challenges diesel engine manufacturers to find a new balance between engine performance and emissions.
Xingyu Liang, Zhiwei Zheng, Hongsheng Zhang, Yuesen Wang, Hanzhengnan Yu   +4 more
doaj   +1 more source

Varying Ignition Quality of a Fuel for a HCCI Engine Using a Photochemically-Controlled Additive: The Development of a ‘Smart’ Fuel

Energies, 2021
This study examines the possibility to provide control over ignition timing in a homogeneous charge compression ignition engine (HCCI) using a fuel additive whose molecular structure can be adapted upon exposure to UV light. The UV adapted molecule has a
David Emberson, Judit Sandquist, Terese Løvås, Alessandro Schönborn, Inge Saanum   +4 more
doaj   +1 more source

Effects of temperature and composition inhomogeneity on the ignition characteristics of NH3/H2 co-firing fuels under HCCI operating conditions

Applications in Energy and Combustion Science, 2023
The application of ammonia (NH3) in combustion devices, such as internal combustion engines (ICEs), is expected to largely reduce the greenhouse gas (CO2) emission.
Wanying Xu, Meng Zhang, Yifeng Zhang, Jinhua Wang, Zuohua Huang   +4 more
doaj   +1 more source

Simulation Analysis of Combustion Parameters and Emission Characteristics of CNG Fueled HCCI Engine

Advances in Mechanical Engineering, 2013
The naturally aspirated compressed natural gas (CNG) fueled homogeneous charge compression ignition (HCCI) engine operation region is narrow between heavy knock at rich air-fuel mixture side and misfire at the lean air-fuel mixture side.
P. M. Diaz, N. Austin, K. Maniysundar, D. S. Manoj Abraham, K. Palanikumar   +4 more
doaj   +1 more source

Challenges in charge preparation and combustion in homogeneous charge compression ignition engines with biodiesel: A review

Energy Reports, 2019
Homogeneous charge compression ignition (HCCI) engines have high efficiency and lower NOx-soot emissions than diesel and gasoline engines. However, these engines suffer from high HC, CO and unregulated emissions and combustion phasing control.
V.D. Chaudhari, D. Deshmukh
doaj   +1 more source

Auto-Ignition and Reaction Front Dynamics in Mixtures With Temperature and Concentration Stratification

Frontiers in Mechanical Engineering, 2020
In-cylinder thermal and concentration stratification is omnipresent in the operation of internal combustion engines, especially for various types of direct injection engines.
Mingyuan Tao, Qi Yang, Patrick Lynch, Peng Zhao   +3 more
doaj   +1 more source

Thermodynamic analysis of methanol, ammonia, and hydrogen as alternative fuels in HCCI engines

International Journal of Thermofluids, 2023
The present study enters in the context of reducing harmful emissions of the marine fleet by using three of the most promising alternative fuels, namely methanol, ammonia, and hydrogen.
Mohamed Djermouni, Ahmed Ouadha
doaj   +1 more source

HCCI Engines: Benefits, Challenges and Future Advancements [PDF]

E3S Web of Conferences
Homogeneous charge compression ignition (HCCI) engines represent a significant advancement in internal combustion engine technology. This study examines the main advantages of HCCI engines, such as increased fuel flexibility, decreased pollution from ...
Fei Yifan
doaj   +1 more source

Effect of Combustion Boundary Conditions and n-Butanol on Surrogate Diesel Fuel HCCI Combustion and Emission Based on Two-Stroke Diesel Engine

Atmosphere, 2022
The combustion and emission characteristics of surrogate diesel fuel homogeneous charge compression ignition (HCCI) with different combustion boundary conditions and n-butanol (NB) mixing ratios are studied in this work.
Shiye Wang, Jundong Zhang, Li Yao
doaj   +1 more source