Results 31 to 40 of about 2,448 (245)

A Review of Early Injection Strategy in Premixed Combustion Engines

open access: yesApplied 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   +4 more
doaj   +1 more source

Analysis of controlled auto-ignition /HCCI combustion in a direct injection gasoline engine with single and split fuel injections

open access: yes, 2008
A multi-cycle three-dimensional CFD engine simulation programme has been developed and applied to analyze the Controlled autoignition (CAI) combustion, also known as homogeneous charge compression ignition (HCCI), in a direct injection gasoline engine ...
Jiang, X   +5 more
core   +1 more source

A Spectroscopic Study of Ignition in a Homogeneous Charge Compression Ignition Engine

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2008
In this study, spectroscopic techniques were used to investigate the effects of the residual gas state and fuel octane number on ignition characteristics of a Homogeneous Charge Compression Ignition (HCCI) engine. Spectroscopic measurements were made of light emission spectra and of light absorption spectra.
IIJIMA, Akira   +2 more
openaire   +2 more sources

Influence of Mixture Quality on Homogeneous Charge Compression Ignition [PDF]

open access: yesSAE Technical Paper Series, 1998
<div class="htmlview paragraph">The major advantages with Homogeneous Charge Compression Ignition, HCCI, is high efficiency in combination with low NOx-emissions. The major drawback with HCCI is the problem to control the ignition timing over a wide load and speed range.
Christensen, Magnus, Johansson, Bengt
openaire   +2 more sources

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Field‐Frustrated Cooperative Distortions: Suppressing Jahn‐Teller Ordering via Microwave Annealing

open access: yesAdvanced Science, EarlyView.
Microwave annealing decouples local Jahn‐Teller distortions from long‐range cooperative ordering in CuFe2O4, stabilizing a metastable cubic phase that remains locally distorted yet globally symmetry‐frustrated. Synchrotron XRD, PDF, XPS, and in situ thermal cycling reveal how non‐equilibrium MW‐phonon interactions suppress cooperative orbital‐lattice ...
Daryoosh Vashaee, Kelvin Dsouza
wiley   +1 more source

A comprehensive study on the emission characteristics of E-diesel dual-fuel engine

open access: yesAlexandria Engineering Journal, 2016
Each year, the ultimate goal of emission legislation is to force technology to the point where a practically viable zero emission vehicle becomes a reality.
A. Avinash, P. Sasikumar
doaj   +1 more source

Auto-ignition of polyoxymethylene dimethyl ether 3 (PODE3) blended with diesel and gasoline via combustion under homogeneous charge compression ignition

open access: yesEnergy Conversion and Management: X, 2021
With high oxygen content and cetane number, PODE3 is a favorable renewable fuel for engines. PODE3/diesel/gasoline blends in a HCCI engine are numerically studied for the first time.
Qinjie Lin, Kun Lin Tay, Wenming Yang
doaj   +1 more source

All‐Flex Plasma Patch for In Vivo Delivery of Reactive Species

open access: yesAdvanced Science, EarlyView.
A fully flexible plasma patch enables stable, conformal treatment on complex biological surfaces and enhances transdermal delivery of reactive species. This platform achieves significant tumor suppression in vivo and reveals coordinated regulation of calcium signaling, metabolism, and programmed cell death, providing a promising strategy for safe and ...
Luxiang Zhao   +8 more
wiley   +1 more source

Biodiesels powered in-cylinder common rail direct injection (CRDi) Assisted Homogeneous Charge Compression Ignition (HCCI) engine

open access: yesInternational Journal of Sustainable Engineering, 2021
Experimental tests were performed on homogeneous charge compression ignition (HCCI) with in-cylinder direct injection (DI) of diesel, biodiesel of Ceiba Pentandra oil methyl ester (CPOME) and biodiesel of Acid oil methyl ester (ACOME).
Nagesh S.B.   +3 more
doaj   +1 more source

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