Results 31 to 40 of about 291 (183)

An Investigation of the Effect of Charge Inhomogeneity on the Ignition and Combustion Processes in a HCCI Engine Using Chemiluminescence Imaging

open access: yesJournal of Thermal Science and Technology, 2007
In the HCCI (Homogeneous Charge Compression Ignition) engines, inhomogeneity in fuel distribution and temperature in the pre-mixture exists microscopically and has possibility to affect the ignition and combustion process.
Kengo KUMANO   +2 more
doaj   +1 more source

Analysis of Homogeneous Charge Compression Ignition (HCCI) Engines for Cogeneration Applications [PDF]

open access: yesJournal of Energy Resources Technology, 2004
This paper presents an evaluation of the applicability of homogeneous charge compression ignition (HCCI) engines for small-scale cogeneration (<1MWe) in comparison to five previously analyzed prime movers. The five comparator prime movers include stoichiometric spark-ignited (SI) engines, lean burn SI engines, diesel engines, microturbines, and fuel
Aceves, S, Martinez-Frias, J, Reistad, G
openaire   +1 more source

Homogenous Charge Compression Ignition (HCCI) Engines [PDF]

open access: yes, 2013
With stricter regulations imposed by the European Union and various governments, it is not surprising that the automotive industry is continuously looking for alternatives to Spark Ignition (SI) and Compression Ignition (CI) Internal Combustion (IC) engines.
openaire   +2 more sources

Effects of Direct Fuel Injection Strategies on Cycle-by-Cycle Variability in a Gasoline Homogeneous Charge Compression Ignition Engine: Sample Entropy Analysis

open access: yesEntropy, 2015
In this study we summarize and analyze experimental observations of cyclic variability in homogeneous charge compression ignition (HCCI) combustion in a single-cylinder gasoline engine.
Jacek Hunicz   +4 more
doaj   +1 more source

Homogeneous Charge Compression Ignition (HCCI) Combustion Engine- A Review

open access: yesIOSR Journal of Mechanical and Civil Engineering, 2014
At present, it is highly required from the automobile sector to develop clean technologies with lower fuel consumption for ambient air quality improvement, green house gas reduction and energy security. Furthermore, due to continuously stringent emission legislation and the fast depletion of the primary energy resources, the development of new highly ...
Pravin Kumar, A Rehman
openaire   +1 more source

Hydrogen‐Enriched Tri‐Fuel Combustion for Low‐Carbon Engines at Medium Engine Load: A Comprehensive CFD Analysis

open access: yesEnergy Science &Engineering, EarlyView.
CFD analysis of a diesel–CH4–H2 tri‐fuel engine shows that increasing hydrogen energy share (HES) enhances mixing and accelerates combustion, improving pressure, efficiency, and reducing CO and soot. At 60% HES, ISFC improves 26.2%, soot drops 95%, while NOx increases due to higher temperatures. ABSTRACT The global commitment to achieve net‐zero carbon
Md. Ifthaker Alam   +4 more
wiley   +1 more source

Homogeneous Charge Compression Ignition Combustion: Challenges and Proposed Solutions

open access: yesJournal of Combustion, 2013
Engine and car manufacturers are experiencing the demand concerning fuel efficiency and low emissions from both consumers and governments. Homogeneous charge compression ignition (HCCI) is an alternative combustion technology that is cleaner and more ...
Mohammad Izadi Najafabadi   +1 more
doaj   +1 more source

Biodiesel for HCCI engine: Prospects and challenges of sustainability biodiesel for energy transition

open access: yesResults in Engineering, 2023
Biodiesel use in homogeneous charge compression ignition (HCCI) engines has the potential to improve engine performance and combustion characteristics, while at the same time reducing harmful emissions. Diesel engines have the dilemma of PM and NOx trade-
Tri W.B. Riyadi   +8 more
doaj   +1 more source

Environmental Burden of Diesel Engines: A Life‐Cycle Assessment and the Imperative for Cleaner Alternatives

open access: yesGlobal Challenges, Volume 10, Issue 7, July 2026.
This study reveals that the use phase of diesel engines contributes the greatest environmental burden due to intensive diesel consumption and related emissions. Life‐cycle assessment highlights severe impacts on climate change, fossil fuel depletion, acidification, and particulate pollution, emphasizing the importance of biodiesel integration, hybrid ...
Sanjeev Kumar   +8 more
wiley   +1 more source

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

open access: yesEnergies, 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   +5 more
doaj   +1 more source

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