Results 41 to 50 of about 34,331 (212)

Overview of free-piston Stirling engine technology for space power application [PDF]

open access: yes, 1987
An overview is presented of free-piston Stirling engine activities, directed toward space power applications. One of the major elements of the program is the development of advanced power conversion.
Slaby, Jack G.
core   +1 more source

Airflow control system for supersonic inlets [PDF]

open access: yes, 1974
In addition to fixed and variable bleed devices provided for controlling the position of a terminal shock wave in a supersonic inlet, a plurality of free piston valves are disposed around the periphery of a cowling of a supersonic engine inlet.
Mitchell, G. A., Sanders, B. W.
core   +1 more source

Coordination of forces of mechanical and electric subsystems of power plant with free piston engine and electric generator of reciprocating type

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
Autonomous power supply system of modern mobile special-purpose equipment requires the development of electromechanical energy converters with high energy and minimum weight- and size indicators.
A. B. Menzhinski
doaj   +1 more source

Design Optimization of Flexure Springs for Free-Piston Stirling Engines and Experimental Evaluations with Fatigue Testing

open access: yesEnergies, 2021
The free-piston Stirling engine is a closed-cycle regenerative heat engine that converts heat energy into mechanical work, and requires a spring element for vibratory operations of the displacer and power pistons.
Chang-Whan Lee   +3 more
doaj   +1 more source

Vibration and acoustic pre-assessment study for free piston engine structure [PDF]

open access: yes, 2011
This paper presents modelling and simulation study of vibration and acoustic for a new free piston engine. The free piston engine is a new engine concept where its piston motion is not restricted by the crankshaft component.
Abdul Aziz, Nuraini   +1 more
core  

Effect of fuel injection rate shapes on mixture formation and combustion characteristic in a free-piston diesel engine generator

open access: yesAdvances in Mechanical Engineering, 2018
The free-piston engine generator is a new power machinery, which removes the crank-shaft mechanism. This article aims to study the impact of different injection rate shapes (left triangle, rectangle, and right triangle) on the free-piston engine ...
Cuijie Han   +3 more
doaj   +1 more source

Simulation of four stroke free piston diesel engine [PDF]

open access: yes, 2008
Free-piston engines are under investigation by a number of research groups worldwide due to their potential advantages in terms of fuel efficiency and engine emissions.
Hafnizar, Muhamad Shaharuddin
core  

Overview of the 1985 NASA Lewis Research Center SP-100 free-piston Stirling engine activities [PDF]

open access: yes, 1985
This effort is keyed on the design, fabrication, assembly, and testing of a 25 kWe Stirling space-power technology-feasibility demonstrator engine. Another facet of the SP-100 project covers the status of a 9000-hr endurance test conducted on a 2 kWe ...
Slaby, J.
core   +1 more source

Research of a Hybrid Diesel Locomotive Power Plant Based on a Free-Piston Engine

open access: yesCommunications, 2020
This article describes one of the possible ways for improving the energy efficiency of shunting diesel locomotives. It means a replacing a traditional traction electric transmission with a diesel generator set with a hybrid transmission with a free ...
Serhiy Buriakovskyi   +4 more
doaj   +1 more source

Improving Free-Piston Stirling Engine Specific Power [PDF]

open access: yes12th International Energy Conversion Engineering Conference, 2014
This work uses analytical methods to demonstrate the potential benefits of optimizing piston and/or displacer motion in a Stirling engine. Isothermal analysis was used to show the potential benefits of ideal motion in ideal Stirling engines. Nodal analysis is used to show that ideal piston and displacer waveforms are not optimal in real Stirling ...
openaire   +1 more source

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