Results 281 to 290 of about 5,004,714 (344)
Some of the next articles are maybe not open access.
Dynamic Analysis of the Single Piston Hydraulic Free Piston Engine
Applied Mechanics and Materials, 2011The connection of the engine body and the base was simplified as a spring and a damper to analyze the body vibration of the single piston hydraulic free piston engine. It was demonstrated that the increasing of the connection spring rate can reduce the amplitude of the body vibration.
Hao Ling Ren, Hai Bo Xie, Hua Yong Yang
openaire +1 more source
Simulation of an Opposed-Piston Four-Stroke Free-Piston Generator
Applied Mechanics and Materials, 2013In order to achieve efficient conversion of the chemical energy of fuel into the electrical energy, a novel opposed-piston four-stroke free-piston generator is developed in this paper by equipping one free-piston engine with two linear generators. Mathematical models of the opposed-piston four-stroke free-piston generator are created based on the ...
Zhao Ping Xu, Si Qin Chang
openaire +1 more source
Review of recent advances of free-piston internal combustion engine linear generator
, 2020Free piston internal combustion engine linear generator (FPELG) is a novel energy conversion device. Compared with traditional rotary internal combustion engines, FPELG shows many potential advantages due to the elimination of crank-connecting rod ...
Chendong Guo +4 more
semanticscholar +1 more source
Motion control of a hydraulic free-piston engine
2012 American Control Conference (ACC), 2012Free-piston engine (FPE), as an alternative of the conventional internal combustion engine, has a high potential in terms of energy saving given its wide range of potential applications and high efficiency. One of the technical barriers that prevents the wide spread of this technology is the lack of precise piston motion control.
Ke Li, Ali Sadighi, Zongxuan Sun
openaire +1 more source
Aeronautical Quarterly, 1966
SummaryA study of shock tube operation with free-piston compression of the driver gas is presented. It is shown theoretically and experimentally that shock Mach numbers exceeding 30 in air may be obtained with an apparatus of moderate size. The operating limitations imposed by the maximum pressures allowed in the apparatus, by the ratio of the volume ...
openaire +1 more source
SummaryA study of shock tube operation with free-piston compression of the driver gas is presented. It is shown theoretically and experimentally that shock Mach numbers exceeding 30 in air may be obtained with an apparatus of moderate size. The operating limitations imposed by the maximum pressures allowed in the apparatus, by the ratio of the volume ...
openaire +1 more source
Modelling of a free piston problem
2006We give a qualitative analysis of the free boundary value problem which models the motion of a piston. A basic role is played by a third-order operator, whose properties are used for solving preliminary problems. The differential equations are transformed into a nonlinear Volterra system, which is dealt with by the fixed point theorem.
Bernardino D’Acunto, Anna Maria Monte
openaire +1 more source
Hydraulic free piston engine — Challenge for control
1999 European Control Conference (ECC), 1999A hydraulic free piston engine, HFPE, combines a diesel engine and a hydraulic pump into one compact component. In practical view there is only one linearly moving part in the HFPE, the piston assembly, which contains combustion and hydraulic pistons and piston rod.
Researcher Seppo Tikkanen +1 more
openaire +1 more source
Stability, Control, and Constraint Enforcement of Piston Motion in a Hydraulic Free-Piston Engine
IEEE Transactions on Control Systems Technology, 2017A free-piston engine (FPE) requires stabilizing feedback control to manage piston motion and ensure safe operation. A high-fidelity model, which simulates the FPE behavior by combining dynamic, thermodynamic, and hydraulic submodels, is exploited as an engine surrogate for control development.
Kevin Zaseck +2 more
openaire +1 more source
Effect of Piston Motion on Combustion of CNG Free Piston Engine (FPE)
Advanced Materials Research, 2014CNG is thought to be one of the most promising alternatives to traditional fuels. The multi-fuel ability is another characteristic of the FPE. The piston motion can be controlled to have beneficial effects on the engine performance. This article investigates the effect of piston motion on combustion of four-stroke CNG FPE using a multidimensional ...
Ning Xia Yin +3 more
openaire +1 more source