Results 111 to 120 of about 107,466 (350)

Alternatives for four stroke motorcycle engine oils

open access: yes, 2021
Günümüzde mineral ve sentetik yaglama yagları kullanılmaktadır. Fakat günümüzde,gelisen ekolojik kaygılar ve sınırlı petrol kaynaklarından dolayı doga dostu biyobazlıyaglama yaglarının önemini arttırmıstır. Biyobazlı yaglama yaglarının petrol ithaliyerine kullanılması ayrıca önemlidir. Yaglama yaglarında en fazla kullanım motoryaglarındadır.
openaire   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Current trends in the development of engines for unmanned aerial vehicle

open access: yesАвіаційно-космічна техніка та технологія
The subject of this study is the current state and prospects for the development of the market for unmanned aerial vehicles (UAVs) and power plants. The purpose of this work was to identify trends in the development of UAV engines of various classes ...
Anatolii Savchenko, Dmytro Obodets
doaj   +1 more source

A conceptual study of the potential for automotive-derived and free-piston Stirling engines in 30- to 400-kilowatt stationary power applications [PDF]

open access: yes
The technical feasibility of applying automotive-derived kinematic and free-piston Stirling engine concepts for stationary applications was explored. Automotive-derived engines offer cost advantages by providing a mature and developd engine technology ...
Chen, H. S., Dineen, J., Vatsky, A.
core   +1 more source

Efficiency of harmonic quantum Otto engines at maximal power

open access: yes, 2018
Recent experimental breakthroughs produced the first nano heat engines that have the potential to harness quantum resources. An instrumental question is how their performance measures up against the efficiency of classical engines. For single ion engines
Deffner, Sebastian
core   +1 more source

Kinematic viscosity of four-stroke engine oils

open access: yes, 2012
Six different commercially distributed four-stroke motorcycle engine oils of 10W–40 viscosity class were evaluated. Two of the oils were of semi–synthetic type, four of synthetic type. All oils were assumed to be Newtonian fluids, thus flow curves were not determined.
Kumbár, Vojtěch   +3 more
openaire   +2 more sources

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

Increasing the compression pressure in an engine by using a long intake pipe [PDF]

open access: yes
During some tests of a one-cylinder engine, using gas oil (diesel engine oil, specific gravity 0.86 at 60 F) with solid injection and compression ignition, it was found to be necessary to increase either the jacket water temperature or the compression ...
Gardiner, Arthur W, Mathews, Robertson
core   +1 more source

Comparative Study On Diesel Engine Performance Operatingwith Biodiesel And Diesel Fuel [PDF]

open access: yes, 2010
The main objective of this research is to compare the performance of direct injection diesel engine operating with biodiesel and diesel fuel. Based on GT-Power simulation, the effects of using biodiesel fuel had been analyzed.
R., Mamat
core  

Measurement Based Quantum Heat Engine with Coupled Working Medium

open access: yes, 2019
We consider measurement based single temperature quantum heat engine without feedback control, introduced recently by Yi, Talkner and Kim [Phys. Rev. E 96, 022108 (2017)].
Das, Arpan, Ghosh, Sibasish
core   +1 more source

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