Results 21 to 30 of about 335,955 (241)

Performance Estimation of a Downsized SI Engine Running with Hydrogen

Energies, 2022
Hydrogen is a carbon-free fuel that can be produced in many ways starting from different sources. Its use as a fuel in internal combustion engines could be a method of significantly reducing their environmental impact.
Enzo Galloni, Davide Lanni, Gustavo Fontana, Gabriele D’Antuono, Simone Stabile   +4 more
doaj   +1 more source

Lean and Lean Six Sigma for Higher Education Institutions [PDF]

, 2020
Private Higher Education Institutions (HEIs) are facing challenges with rising costs and declining student numbers. In 2017, only 42.6% of the vacancies offered by private HEIs in Brazil were fulfilled. In order to be able to stay competitive in this new
da Cruz, Rodrigo, Dalla Valentina, Luiz Veriano Oliveira, Duarte, Márcia Adriana Tomaz   +2 more
core   +1 more source

Effects of Lean Burn on Combustion and Emissions of a DISI Engine Fueled with Methanol–Gasoline Blends

Energies
Methanol has significant potential as an alternative fuel for internal combustion engines. Using methanol–gasoline blends with lean-burn technology in traditional spark-ignition engines can enhance fuel economy and reduce emissions.
Miaomiao Zhang, Jianbin Cao
doaj   +1 more source

Evaluation of the Conversion Efficiency of Catalytic Convertors for Stoichiometric and Lean-Burn Methanol Engines

Atmosphere
Heavy-duty methanol engines are regarded as a promising low-carbon solution for commercial vehicle decarbonization, yet the comprehensive coupled characteristics of fuel consumption, multi-dimensional exhaust emissions, and the corresponding ...
Laihua Shi, Chongyao Wang, Jianjian Kang, Lan Li, Xiaoliu Xu, Di Wu, Bing Liu, Xin Wang   +7 more
doaj   +1 more source

Experimental investigation of emission characteristics based on new alcohol-based gasoline fuel

Advances in Mechanical Engineering, 2017
This article chose the new type alcohol-based fuel as the engine fuel, realized lean burn in a CA4GA5 engine, and got the lean burn limit to 20.6. Taking the gasoline as equivalent fuel, and according to 10%, 20%, and 30% volume proportion of alcohol ...
Wen Zhang, Zhijun Li, Penghao Jiao, Boxi Shen, Hao Wang, Hongjie Zhang   +5 more
doaj   +1 more source

Application of Renewable Energies: Effects of Oxyhydrogen Negative Pressure Indraft on Combustion and Emission of Biobutanol/Gasoline Combined Supply Engine Under Exhaust Gas Recirculation Coupled Lean–Burn

Energies
Combining biobutanol and oxyhydrogen in an SI engine can reduce fossil-fuel use and improve power, but oxyhydrogen increases NOx. Without sacrificing combustion stability, this work investigates lean–burn coupled with exhaust gas recirculation for a ...
Jingyi Hu, Fangxi Xie, Zhe Zhao, Yan Su, Yu Liu, Xiaoping Li, Beiping Jiang, Zhaohui Jin, Xiangyang Wang, Ziheng Zhao, Yi Lin, Hengfu Guo   +11 more
doaj   +1 more source

Influence of plasma-assisted ignition on flame propagation and performance in a spark-ignition engine

Applications in Energy and Combustion Science, 2021
Lean-burn is an attractive concept for reasons of high thermal efficiency and low nitrogen oxide (NOx) emissions, however, successful implementation in spark-ignition (SI) engines turned out to be challenging because of misfire or partial burn caused by ...
Joonsik Hwang, Wooyeong Kim, Choongsik Bae   +2 more
doaj   +1 more source

Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes

Fuel Processing Technology
Combining stratified lean-burn techniques with methanol offers a promising path to achieving high efficiency and low emissions in direct-injection spark-ignition (DISI) engines.
Miaomiao Zhang, Jianbin Cao
doaj   +1 more source

Analysis on control factors of air-fuel ratio limit by using in-cylinder optical measurement

Nihon Kikai Gakkai ronbunshu, 2018
To increase thermal efficiency of internal combustion engine, lean burn and EGR (Exhaust Gas Recirculation) system have been developed with spark ignition coils generating larger discharge current and discharge energy than current mass production coils ...
Kazuhiro ORYOJI, Yoshihiko AKAGI, Yoshifumi UCHISE, Yuyu ZHOU, Tatsuya KUBOYAMA, Yasuo MORIYOSHI   +5 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source