Results 111 to 120 of about 6,942,124 (246)

Investigation of the operating characteristics of a free-piston closed-cycle Joule engine generator with helium as working fluid

open access: yesEnergy Conversion and Management: X
As an emerging micro- or small-scale energy conversion technology, linear Joule engine generators (LJEGs) combine the advantages of external combustion engines and linear generators, feature the advantages of high thermal-to-electrical efficiency, multi ...
Benlei Wang   +8 more
doaj   +1 more source

Characterization and Repetition Rate Locking of a 1 GHz Erbium‐Doped ZBLAN Waveguide‐Chip Comb Laser

open access: yesLaser &Photonics Reviews, EarlyView.
A compact, erbium‐doped ZBLAN waveguide chip mode‐locked laser that self‐starts, delivers stable ultrashort pulses, and repetition rate locked to a 1 GHz radio‐frequency reference. The laser produces near transform‐limited 324 fs pulses and 12 nm bandwidth with low noise and long‐term stability, with potential applications in optical frequency ...
Wen Qi Zhang   +4 more
wiley   +1 more source

Effects of Initial Temperature on the Performances of Free Piston Linear Generator

open access: yes, 2016
This paper investigates the influences of the initial temperature on the performance of free piston linear generator (FPLG). Based on multi-dimensional combustion model, the effects of initial temperature on in-cylinder pressure, in-cylinder temperature ...
Chi Zhang   +14 more
core   +1 more source

Real‐Time Fractional Control of an Electrohydraulic System Using Low‐Cost Technology

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Advances in control methods for electrohydraulic systems (EHS) improve performance by addressing nonlinearities and unknown parameters, although most studies are limited to numerical simulations. Furthermore, research with experimental validation often relies on high‐performance computing equipment, specialized data acquisition cards, and ...
Edgar H. Robles‐Sauceda   +5 more
wiley   +1 more source

Performance characteristics of free piston linear generator on different equivalence ratio

open access: yes, 2018
The free piston linear generator (FPLG) is a kind of linear free-piston engine and has many advantages over the conventional internal combustion engine.
Heikal, M. R.   +15 more
core   +1 more source

Temperature field analysis and thermal management optimization of the free piston engine generator based on electromagnetic-thermal coupling

open access: yesCase Studies in Thermal Engineering
The free piston engine generator is a highly promising energy conversion system characterized by high efficiency, high power density, and wide fuel adaptability.
Jian Li   +8 more
doaj   +1 more source

Analysis of Mechanical‐Electrical‐Hydraulic Coupled Vibration Response Characteristics of Thermal Control Circulating Pumps Supported by Water‐Lubricated Bearings

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The operational reliability of thermal control circulation pumps is significantly restricted by the multi‐physics coupled environment. To reveal the vibration transmission mechanisms and dynamic response characteristics under multi‐field coupled excitations, a multi‐DOF coupled dynamic representation of the overall system, incorporating the ...
Jianfeng Luo   +4 more
wiley   +1 more source

A theoretical framework for the analysis of an opposed piston linear engine design

open access: yesResults in Engineering
Traditional crank-based engines face limitations due to mechanical, thermal, and combustion inefficiencies. In contrast, the opposed piston design of a linear engine generator mitigates frictional losses by eliminating rotational motion and crankshaft ...
Mustapha Animashaun   +2 more
doaj   +1 more source

The Problem of Engines in Statistical Physics. [PDF]

open access: yesEntropy (Basel), 2021
Alicki R   +2 more
europepmc   +1 more source

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