Results 51 to 60 of about 1,236,598 (336)

A Review on Friction Reduction by Laser Textured Surfaces in Internal Combustion Engines

open access: yesTribology Online, 2022
The internal combustion engine will be required as a bridge-technology in the upcoming decades to achieve a significant reduction in local emissions in the mobility, and logistics sector.
Gabor Laki   +3 more
doaj   +1 more source

Exhaust Emissions from a Hybrid City Bus Fuelled by Conventional and Oxygenated Fuel

open access: yesEnergies, 2022
City buses are one of the main means of public transport in cities. As they move in a limited and densely populated area and are intensively exploited, it is particularly important that they are environmentally friendly.
Miłosław Kozak   +2 more
doaj   +1 more source

Investigation of transition between spark ignition and controlled auto-ignition combustion in a V6 direct-injection engine with cam profile switching [PDF]

open access: yes, 2008
Controlled auto-ignition (CAI) combustion, also known as Homogeneous Charge Compression Ignition (HCCI) can be achieved by trapping residuals with early exhaust valve closure in a direct fuel injection in-cylinder four-stroke gasoline engines (through ...
Kalian, N, Qiao, J, Zhao, H
core   +1 more source

Fast-NO emission analysis of different mixture formation strategies in a hydrogen single-cylinder heavy-duty engine

open access: yesAutomotive and Engine Technology
This study investigates nitrogen oxide emissions (NO $$_x$$ x ) in a heavy-duty hydrogen engine by comparing Port Fuel Injection (PFI) with two Direct Injection (DI) configurations under various load conditions.
Manuel Bucherer   +4 more
doaj   +1 more source

Combustion mechanism study of ammonia/n-dodecane/n-heptane/EHN blended fuel

open access: yesApplications in Energy and Combustion Science
Due to the challenges of ammonia, such as high ignition energy and slow flame propagation speed, the utilization of ammonia in engines might necessitate the implementation of dual-fuel combustion modes along with the use of cetane improvers.
Tengda Song   +4 more
doaj   +1 more source

Application of Gas Dissolved in Fuel in the Aspect of a Hypocycloidal Pump Design

open access: yesEnergies, 2022
The advancement of modern injection systems of diesel engines is related to a constant increase in the injection pressures generated by injection pumps.
Maciej Bajerlein   +2 more
doaj   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

open access: yesAdvanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert   +6 more
wiley   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger   +11 more
wiley   +1 more source

A transient numerical study for heat transfer and flow characteristics of dimpled piston cooling gallery of a diesel engine

open access: yesCase Studies in Thermal Engineering, 2023
Piston cooling gallery is an effective cooling method to achieve an acceptable piston temperature field. This paper aims to analyze the effects of teardrop dimples size and dimple head-and-tail orientation on flow and heat transfer inside the cooling ...
Jinkun Wang   +4 more
doaj   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

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