Results 41 to 50 of about 34,342 (213)
Airflow control system for supersonic inlets [PDF]
, 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.
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Combustion stability control of a single-piston free piston engine generator
Thermal Science, 2023 Free piston engine generator is an effective alternative to conventional range ex-tender, which is able to facilitate the transportation sector decarbonization attributed to its high thermal efficiency and ultimate fuel flexibility. However, due to the lack of crankshaft mechanism, stable and robust operation of free piston engine generator is ...
Jinlong Wang +3 more
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Energies, 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
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Free-piston diesel engine dynamics and control [PDF]
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001 Free-piston diesel engines are characterized by freely moving pistons without any rigid crankshaft or camshaft connected to the pistons. This allows a highly compact and efficient engine design, but requires automatic control of the piston motion. This paper present a dynamic mathematical model of a free-piston diesel engine, a control oriented dynamic
T.A. Johansen +3 more
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Vibration and acoustic pre-assessment study for free piston engine structure [PDF]
, 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
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Overview of the 1985 NASA Lewis Research Center SP-100 free-piston Stirling engine activities [PDF]
, 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.
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Simulation of four stroke free piston diesel engine [PDF]
, 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
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Advances 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
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Research of a Hybrid Diesel Locomotive Power Plant Based on a Free-Piston Engine
Communications, 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
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Comparison of free-piston Stirling engine model predictions with RE1000 engine test data [PDF]
Predictions of a free-piston Stirling engine model are compared with RE1000 engine test data taken at NASA-Lewis Research Center. The model validation and the engine testing are being done under a joint interagency agreement between the Department of ...
Tew, R. C., Jr.
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