Advances in free-piston internal combustion engines: A comprehensive ...- free piston diesel generator ,202155·As for the new power devices, the free-piston internal combustion engines (FPICEs) is a typical representative of a linear power device [5]. The piston motion of the FPICEs is “free” because it is not restricted by the crankshaft system. Thus, the FPICEs have many advantages, such as simplicity in structure, high energy conversion ...Aquarius Engines unveils free-piston linear engine operating …2021520·20 May 2021. Israel-based Aquarius Engines unveiled a hydrogen-fueled version of its free-piston linear engine new hydrogen engine. The 10kg machine, based on the same technology as the original patented single-piston linear engine, operates exclusively on hydrogen. The new Aquarius Hydrogen Engine’s lightweight design and …
Free-piston linear generator - Wikipedia
The free-piston linear generator ( FPLG) uses chemical energy from fuel to drive magnets through a stator and converts this linear motion into electric energy. Because of its …
Decoupling Design and Verification of a Free-Piston Linear Generator
Decoupling Design and Verification of a Free-Piston Linear Generator Peng Sun 1,2, Chi Zhang 1,*, Jinhua Chen 1, Fei Zhao 1, Youyong Liao 1, Guilin Yang 1 and ... Mao et al. proposed a method of parameters coupling design of diesel FPLG based on the energy conservation relationship. In order to define the main geometric dimensions, an iterative
The real-time interaction model for transient mode investigations …
2022725·Free-piston engine generator is an unconventional engine, which abandons the crank and connecting rod mechanism. This paper focused on a numerical simulation for the research on the combustion characteristics of a free …
Energy and Power Engineering - Beijing Institute of Technology
In-cylinder heat transfer and gas motion of a free-piston diesel engine generator. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, v 231, n 8, p 739-752, December 1, 2017. [9] Liu, Chunhui; Zuo, Zhengxing; Feng, Huihua. Skeletal and reduced chemical kinetic mechanisms for methyl butanoate …
DLR’s free-piston linear generator redesigns the range …
2013531·The free-piston linear generator comprises an internal combustion chamber, a linear generator, and a gas spring. ... which enables different fuels to be used, including gasoline, diesel, natural ...
Effect of fuel injection rate shapes on mixture formation and ...
2018517·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 generator spray and combustion characteristics.
Toyota develops high-efficiency 'free piston' no ... - ExtremeTech
201477·A new design for a piston-free linear engine generator has just been released by Toyota. With remarkable efficiency, the device might be scaled up to compete with electric power plants used in ...
Research on the Combustion Characteristics of a Free-Piston
2016818·The free-piston gasoline engine linear generator (FPGLG) is a new kind of power plant consisting of free-piston gasoline engines and a linear generator. Due to the elimination of the crankshaft mechanism, the piston motion process and the combustion heat release process affect each other significantly. In this paper, the combustion …
Research on combustion process of a free piston diesel …
201611·Introduction. The free-piston diesel linear generator (FPDLG) is a new engine type with the advantages of both environmentally friendly and energy saving. It is …
Simulation Research of the n-Butanol Proportion …
2022414·For researching the influence of n -butanol proportion in diesel fuel on homogeneous charge compression ignition (HCCI) combustion of the free-piston diesel engine generator (FPDEG), a …
Effect of aspect ratio on the performance characteristics of free ...
202138·The piston motion of a free-piston diesel linear generator (FPDLG) is different from the traditional reciprocating engine (TRE). Here we focused on a numerical simulation for the research on the combustion process of an FPDLG by adopting coupled models of zero-dimensional dynamics and multi-dimensional computational fluid …
Research on the influence of dual spark ignition ... - ScienceDirect
202191·Introduction. As a kind of new device which no longer entails crankshaft connecting rod mechanism and cam valve mechanism, free piston generator (FPG) boasts very high potential theoretical advantages such as high thermal efficiency and power per unit volume, easy modularization, low pollutant emissions, etc [1], [2]. and therefore can be …
Motion characteristics and mechanisms of a resonance starting …
20151217·Motion characteristics and mechanisms of a resonance starting process in a free-piston diesel engine generator. Chenheng Yuan, Huihua Feng, Yituan He, and Jing Xu. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2015 230: 2, 206-218
Research on the engine combustion characteristics of a free-piston ...
2018715·The free-piston diesel engine linear generator (FPDLG) shows a great deal of merits due to its unique structure and operation characteristics. For this reason, most researchers mainly investigated on the FPDLG characteristics. However, there has not been any report on the engine operation characteristics. So this paper focuses on the engine ...
(PDF) Design of Free-Piston Linear Generator
202111·University of Calgary (2015) Diesel generator fuel ef ficiency. In: Energy education. Diesel. ... This paper proposes a decoupling design approach for a free …
Experimental study on free piston linear generator (FPLG) used …
20171225·A free-piston linear generator (FPLG) is an energy conversion device that can generate electrical energy utilizing different types of fuel. Natural gas fields with high carbon dioxide (CO 2) content are being simulated for study, knowing that the presence of CO 2 in natural gas contributes to a reduction in NOx emission while improving the …
Motion characteristics and mechanisms of a resonance starting …
20151217·The research results indicate that the free-piston engine generator is a single degree of freedom self-excited dynamic system with variable damping and stiffness. The starting process has oscillation stability; the piston motion can be resonated first to large stroke length by a linear motor with low electromagnetic force and then tends to …
Design and modeling of a free-piston engine generator
20221230·Free-piston engine generators (FPEGs) can be applied as decarbonized range extenders for electric vehicles because of their high thermal …
Experimental analysis on the operation process of opposed-piston free ...
2022101·The piston motion of a free-piston diesel linear generator (FPDLG) is different from the traditional reciprocating engine (TRE). Here we focused on a numerical simulation for the research on the combustion process of an FPDLG by adopting coupled models of zero-dimensional dynamics and multi-dimensional computational fluid …
Decoupling Design and Verification of a Free-Piston …
This paper proposes a decoupling design approach for a free-piston linear generator (FPLG) constituted of three key components, including a combustion chamber, a linear generator and a gas spring serving as …
ADVANCED INTERNAL COMBUSTION ELECTRICAL GENERATOR
Figure 2 – Free piston linear alternator The linear generator is designed such that electricity is generated directly from the piston’s oscillating motion, as rare earth permanent magnets fixed to the piston are driven back and forth through the alternator’s coils. Combustion occurs alternately at each end of the piston and a
No crankshaft, no problem: Toyota's free piston engine is brilliant
2014630·Range-extending gas engines have a big problem: they're engineered to rotate wheels, not provide electricity. The Free Piston Engine Linear Generator cuts out the middleman for a huge efficiency ...
Free-Piston Stirling Engine Generators | IntechOpen
2018115·Free-Piston Stirling Engines (FPSEs) have recently attracted attention as a promising energy conversion technology because of their desirable characteristics such as high efficiency, high reliability, and easy and quiet operation. FPSE are truly a closed cycle system that works using variations in the internal pressure to drive the power piston that …
The design and simulation of a two-stroke free-piston …
200841·The design of a free-piston diesel engine generator was presented. A detailed simulation model was derived and extensive simulation results were presented, …
Combustion characteristics analysis of a free-piston engine generator …
201651·Free-piston engine generator is an unconventional engine, which abandons the crank and connecting rod mechanism. This paper focused on a numerical simulation for the research on the combustion characteristics of a free-piston diesel engine generator. An iteration numerical simulation method was presented by adopting coupled …
The design and simulation of a two-stroke free-piston …
200841·The design of a free-piston diesel engine generator was presented. A detailed simulation model was derived and extensive simulation results were presented, giving insight into the basic performance of the engine and effects of engine design parameters and operational variables on engine performance.