Results 41 to 50 of about 655 (183)

Study on the Effect of Coupled Internal and External EGR on Homogeneous Charge Compression Ignition under High Pressure Rise Rate

Energies, 2023
This paper investigated the effects of exhaust gas recirculation (EGR) on homogeneous charge compression ignition (HCCI) combustion in internal combustion engines. The exhaust valve closing (EVC) timings were scanned to obtain a set of baseline operating
Huayu Tian, Jun Wang, Ran Zhang, Fan Wang, Yan Su, Yaodong Wang   +5 more
doaj   +1 more source

Computational Analysis of Spray Angle Effects on Combustion and Emissions in Methane‐Diesel Dual‐Fuel Engine

Energy Science &Engineering, Volume 14, Issue 3, Page 1100-1112, March 2026.
This study concluded that wider spray angles produce wall impingement and greater unburned hydrocarbons in methane‐diesel dual‐fuel engines, whereas 110° balances efficiency and emissions. ABSTRACT A diesel methane dual fuel engine appears as a potential means for lowering emissions while retaining useful thermal efficiency.
Abdullah Al Rifat, Md. Arafat Rahman, Md. Mizanur Rahman, Tafsirul Hassan, Md Nazmul Haque   +4 more
wiley   +1 more source

Noise, Vibration, and Harshness (NVH) Challenges in Hydrogen Internal Combustion Engine Vehicles

Energy Science &Engineering, Volume 14, Issue 2, Page 1067-1080, February 2026.
ABSTRACT This paper presents a state‐of‐the‐art literature review on noise, vibration, and harshness (NVH) in hydrogen‐fuelled internal combustion engines. Studies published between 2011 and 2025 were screened, covering fundamental flame physics, test‐bench work, and recent prototype vehicles.
Krisztián Horváth
wiley   +1 more source

The Impact of Private Equity Hospital Acquisitions on Maternal Health for Medicaid Patients

Health Services Research, Volume 61, Issue 1, February 2026.
ABSTRACTObjectiveTo examine the impact of private equity (PE) hospital acquisitions on maternal health for Medicaid patients.Study Setting and DesignThis quasi‐experimental study focuses on 66 PE acquisitions of hospitals between 2014 and 2018, analyzing national Medicaid claims data from 2011 to 2020. Using a difference‐in‐differences (DiD) framework,
Yang Amy Jiao
wiley   +1 more source

Reaction Mechanisms and HCCI Combustion Processes of Mixtures of n-Heptane and the Butanols

Frontiers in Mechanical Engineering, 2015
A reduced primary reference fuel (PRF)-Alcohol-Di-tert-butyl Peroxide (DTBP) mechanism with 108 species and 435 reactions, including sub-mechanisms of PRF, methanol, ethanol, DTBP and the four butanol isomers, is proposed for homogeneous charge ...
Hu eWang, Hu eWang, Daniel eDelVescovo, Mingfa eYao, Zunqing eZheng, Rolf D Reitz   +5 more
doaj   +1 more source

Effect of ZrO2-toughened Al2O3 ceramic particles on impact abrasive properties of reinforced high-chromium cast iron matrix composites

Cailiao gongcheng, 2023
Traditional wear-resistant steel materials can hardly meet the needs of modern mining equipment for key wear-resistant components, and ceramic particle-reinforced steel-based wear-resistant composites have become one of the most promising wear-resistant ...
ZHANG Lujiang, DONG Chuangchuang, CUI Hongliang, ZHOU Mojin, WANG Zhijie   +4 more
doaj   +1 more source

Advanced HCCI Engines: Challenges and Potential Applications [PDF]

E3S Web of Conferences
Homogeneous Charge Compression Ignition (HCCI) engines are considered an emerging internal combustion technology with significant potential for enhancing fuel efficiency and lowering emissions compared to traditional Spark Ignition (SI) and Compression ...
Xie Mingyang
doaj   +1 more source

Characteristics of Hydrogen‐Enriched Fuels in Spark and Compression Ignition Engines With Dual Injection System: A Bibliometric Study of Research Evolution

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Recent fuel economy and stringent emissions concerns have stimulated the use of hydrogen in internal combustion engines and to drive dual‐fuel benefits. This paper explicitly conducted a bibliometric study of scholarly articles on hydrogen enrichment of diverse fuels in compression and spark ignition (SI) engines with dual injection systems (DIS ...
Solomon O. Giwa, Raymond T. Taziwa, Arun Thirumurugan   +2 more
wiley   +1 more source

Impact of intake conditions on characteristics of combustion of the HCCI engine using PRF80

Cogent Engineering
Recently, research on internal combustion engines has focused on mitigating and reducing pollution emissions and fuel consumption. Homogeneous charge compression ignition (HCCI) is a promising solution.
Tung Lam Nguyen, Van Thanh Ngo
doaj   +1 more source

Numerical study of piston bowl geometries on PFI-HCCI engine performance

Journal of Mechanical Engineering and Sciences, 2023
Homogeneous charge compression ignition (HCCI) is an advanced combustion strategy proposed to provide higher efficiency and lower emissions than conventional compression ignition.
Nik Muhammad Hafiz Nik Ab Rashid, Abdul Aziz Hairuddin, Khairil Anas Md Rezali, Siti Ujila Masuri, Muntasser A.A.Mossa   +4 more
doaj   +1 more source