Results 21 to 30 of about 30,008 (262)

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 ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine

Nihon Kikai Gakkai ronbunshu, 2021
The prechamber combustion characteristics were studied using a rapid compression and expansion machine (RCEM) to improve the efficiency of cogeneration natural gas engines.
Daisuke MORI, Satoshi WAKU, Riku YAMASHITA, Fumio SHIMADA, Kimitoshi TANOUE, Yasuo MORIYOSHI   +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

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

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

Broadband dual-frequency comb spectroscopy in a rapid compression machine

Optics Express, 2019
We demonstrate fiber mode-locked dual frequency comb spectroscopy for broadband, high resolution measurements in a rapid compression machine (RCM). We apply an apodization technique to improve the short-term signal-to-noise-ratio (SNR), which enables broadband spectroscopy at combustion-relevant timescales. We measure the absorption on 24345 individual
Anthony D. Draper, Ryan K. Cole, Amanda S. Makowiecki, Jeffrey Mohr, Andrew Zdanowicz, Anthony Marchese, Nazanin Hoghooghi, Gregory B. Rieker   +7 more
openaire   +3 more sources

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

Standardizing the Ignition Delay Time Measurements of Rapid Compression Machine: An Inverse Application of the Livengood–Wu Integral Method

Energies
The rapid compression machine measures ignition delay time at high pressures and low to intermediate temperatures. However, unavoidable facility effects, such as compression and heat loss, shift the measurements away from ideal (adiabatic and constant ...
Zhonghao Zhao, Yingtao Wu
doaj   +1 more source