Results 81 to 90 of about 187,058 (317)

Assessing the Paradox of Autonomous Vehicles: Promised Fuel Efficiency vs. Aggregate Fuel Consumption [PDF]

open access: yes
As autonomous vehicles (AVs) continue to evolve and approach widespread adoption in the near future, the touted benefits of improved fuel efficiency at an individual level come under scrutiny when considering the overall impact on fuel consumption.
Dilshad Mohammed, Balázs Horváth
core   +1 more source

Development of Representative Sailing Mode Construction Methodology Using Markov Chain

open access: yesJournal of Marine Science and Engineering
The strengthening of regulations such as EEXI, EEDI, and CII on ship emissions is underway. Despite their application, objective comparisons of ships are hindered by diverse navigation patterns and varying velocity regulations in different seas and ports.
Changjae Moon   +3 more
doaj   +1 more source

Can Vehicle Efficiency Beat Fuel Efficiency in Cutting Fuel Use? [PDF]

open access: yes, 2018
This paper demonstrates the importance of considering both energy and non-energy efficiency improvements in the provision of energy intensive household services. Using the example of private transport, we analyse whether vehicle efficiency can beat fuel efficiency in cutting fuel use.
Figus, Gioele, Swales, Kim
openaire  

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu   +5 more
wiley   +1 more source

Control of Synthetic Hairpin Vortices in Laminar Boundary Layer for Skin-Friction Reduction

open access: yesJournal of Marine Science and Engineering, 2020
The results of flow visualization and hot-film measurement in a water channel are presented in this paper, in which the effectiveness of controlling synthetic hairpin vortices in the laminar boundary layer is examined to reduce skin friction.
Bonguk Koo, Yong-Duck Kang
doaj   +1 more source

Chemically Fueled Systems Chemistry Across Length Scales

open access: yesAdvanced Functional Materials, EarlyView.
Chemically fueled reaction cycles regulate processes through single and multiple catalytic sites on the molecular and assembly scale. This gives rise to unique kinetically controlled properties/functions like spatio‐temporal catalysis, oscillations, optical properties, and perform work.
Brigitte A. K. Kriebisch, Job Boekhoven
wiley   +1 more source

Fuel Efficiency and Motor Vehicle Travel: The Declining Rebound Effect [PDF]

open access: yes
We estimate the rebound effect for motor vehicles, by which improved fuel efficiency causes additional travel, using a pooled cross section of US states for 1966-2001.
Kurt Van Dender, Kenneth A. Small
core  

Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine [PDF]

open access: yes, 2013
Reducing fuel consumption is a prime objective in the automotive industry in order to meet regulatory and customer demands. Variable valve actuation offers many opportunities for improving the spark ignition engine’s performance in areas such as fuel ...
CLENCI, Adrian   +12 more
core   +1 more source

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu   +9 more
wiley   +1 more source

Evaluating Data Envelopment Analysis as a means of measuring van fuel efficiency [PDF]

open access: yes
In order to improve fuel efficiency, fleet managers need methods to accurately measure fuel performance. Miles per gallon – the industry fuel efficiency standard measure – has several limitations.
Virtos, H.P.B.
core  

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