Results 31 to 40 of about 32,523 (343)

Analysis of Diesel Knock for High-Altitude Heavy-Duty Engines Using Optical Rapid Compression Machines

Energies, 2020
In high altitude regions, affected by the low-pressure and low-temperature atmosphere, diesel knock is likely to be encountered in heavy-duty engines operating at low-speed and high-load conditions.
Xiangting Wang, Haiqiao Wei, Jiaying Pan, Zhen Hu, Zeyuan Zheng, Mingzhang Pan   +5 more
doaj   +1 more source

Study on promotion of lean combustion by oxygen enrichment using a rapid compression expansion machine

Nihon Kikai Gakkai ronbunshu, 2021
While lean combustion in SI engine is one of the promising methods to increase the thermal efficiency and reduce the pollutant emissions, it causes instability of ignition and combustion due to the low burning velocity.
Kazuki HARADA, Shion ANDO, Yuya ITO, Yuzo KAWASOE, Hideki HASHIMOTO, Osamu MORIUE   +5 more
doaj   +1 more source

A Novel Dual Fuel Reaction Mechanism for Ignition in Natural Gas–Diesel Combustion

Energies, 2019
In this study, a reaction mechanism is presented that is optimized for the simulation of the dual fuel combustion process using n-heptane and a mixture of methane/propane as surrogate fuels for diesel and natural gas, respectively.
Sebastian Schuh, Jens Frühhaber, Thomas Lauer, Franz Winter   +3 more
doaj   +1 more source

Multi compression–expansion process for chemical energy conversion: Transformation of methane to unsaturated hydrocarbons and hydrogen

Applications in Energy and Combustion Science, 2023
With the global energy system moving towards renewable energies, there is an increasing demand for flexible conversion processes which can cope with the temporally and locally fluctuating nature of energy supply and energy demand.
Simon Drost, Robert Schießl, Ulrich Maas   +2 more
doaj   +1 more source

Experimental Investigation and Benchmark Study of Oxidation of Methane–Propane–n-Heptane Mixtures at Pressures up to 100 bar

Energies, 2019
Dual fuel combustion exhibits a high degree of complexity due to the presence of different fuels like diesel and natural gas in initially different physical states and a spatially strongly varying mixing ratio.
Sebastian Schuh, Ajoy Kumar Ramalingam, Heiko Minwegen, Karl Alexander Heufer, Franz Winter   +4 more
doaj   +1 more source

Development of a diesel surrogate for improved autoignition prediction: Methodology and detailed chemical kinetic modeling

Applications in Energy and Combustion Science, 2023
While the surrogate fuel approach has been successfully applied to the simulation of the combustion behaviors of complex gasoline and jet fuels, its application to diesel fuels has been challenging.
Goutham Kukkadapu, Russell Whitesides, Mengyuan Wang, Scott W. Wagnon, Marco Mehl, Charles K. Westbrook, Robert McCormick, Chih-Jen Sung, William J. Pitz   +8 more
doaj   +1 more source

Influences of the end of injection and ambient temperature on biodiesel combustion

Journal of Mechanical Engineering and Sciences, 2017
Influence of the injection pressure and ambient temperature at the end of injection of biodiesel spray has been studied using Rapid Compression Machine (RCM). The experiments were conducted on a RCM for the premixed combustion with a single injection at
Norrizam Jaat, Amir Khalid, Mariam Basharie, Azahari Razali, Azwan Sapit, Z. Noranai   +5 more
doaj   +1 more source

Effects of ambient temperature and injection pressure on biodiesel ignition delay

Journal of Mechanical Engineering and Sciences, 2017
Biodiesels are promoted as alternative fuels due to their potential to reduce dependency on fossil fuels. The main problem in diesel combustion chamber design is to understand the importance of interaction phenomenon between fuel spray and surrounding ...
Norrizam Jaat, Amir Khalid, Adiba Rhaodah Andsaler, Azwan Sapit, Azahari Razali, Mariam Basharie   +5 more
doaj   +1 more source

Visual saliency from image features with application to compression

, 2012
Image feature point algorithms and their associated regional de-scriptors can be viewed as primitive detectors of visually-salient information.In this paper, a new method for constructing a visual attention probabilitymap using features is proposed ...
Robertson, Neil, Harding, P. J.
core   +1 more source

Combustion characteristics of hydrogen in a noble gas compression ignition engine

Energy Reports, 2021
Hydrogen eliminates carbon emissions from compression ignition (CI) engines, while noble gases eliminate nitrogen oxide (NOx) emissions by replacing nitrogen. Noble gases can increase the in-cylinder temperature during the compression stroke due to their
Norhidayah Mat Taib, Mohd Radzi Abu Mansor, Wan Mohd Faizal Wan Mahmood   +2 more
doaj   +1 more source