Effect of fuel injection characteristics on the performance of a free-piston diesel engine linear generator: CFD simulation and experimental results

Guo, Chendong; Song, Yunbo; Feng, Huihua; Zuo, Zhengxing; Jia, Boru; Zhang, Ziwei; Roskilly, Anthony Paul

doi:10.1016/j.enconman.2018.01.052

Cited by 36 publications

(14 citation statements)

References 28 publications

(55 reference statements)

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“…There is a correlation between the compression ratio and the peak pressure in the cylinder vs the injection time, and by adjusting the harmonious design, the optimum design will be obtained. [8]. A thought-through optimizing the combustion process by operating a variable compression pressure will result in a good combustion process.…”

Section: Figure 10 Ignition Delay Graph On Cylinder 1 With Variable Speedmentioning

confidence: 99%

Prediction Performance of Two Stroke Semi Free Piston Diesel Engine with Dual Piston System

Fathallah

Bimatara

Bakar

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The design of the semi-free piston two-stroke diesel engines has been successfully implemented. Before the engine is built, it is necessary to predict its performance. Prediction is done by using the simulation method. This method is considered the most effective because it does not fabricate the machine first. Modelling and simulation are done using application software. Simulation modelling covers all parts of the engine, namely the intake system, block, injection system, and then exhaust system. Engine performance predictions are based on speed variations as well as load variations. Validation is done with a conventional machine. The difference between the two engines lies in friction losses, where the free piston concept is to reduce friction losses. The simulation results are engine performance such as torque, power, bsfc, bmep, and combustion processes such as heat release, pressure, and ignition delay. The difference in the performance of the semi-free piston compared to a conventional engine with the same combustion chamber size. Prediction results state that the difference in performance is very significant.

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Section: Figure 10 Ignition Delay Graph On Cylinder 1 With Variable Speedmentioning

confidence: 99%

Prediction Performance of Two Stroke Semi Free Piston Diesel Engine with Dual Piston System

Fathallah

Bimatara

Bakar

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…This has made CFD a practical adjunct to experimentation allowing consequently a deep verification and exhaustive interpretation of experimental results (Amsden & Amsden, 1993). More recently, a growing number of publications (Atmaca et al, 2016;Guo et al, 2018;Jafari et al, 2016;Li et al, 2017;Maurya & Mishra, 2017;Pandal et al, 2018;Petranović et al, 2017;Sideri et al, 2017;Silva et al, 2017;Soni & Gupta, 2016) focusing on the use of CFD codes to extensively investigate the combustion behavior of ICE have been carried out. However, a key problem for these studies dealing with numerical simulation of engine's combustion is how to adjust more accurately the CFD code.…”

Section: Introductionmentioning

confidence: 99%

“…The gap between the experimental and numerical in-cylinder pressure was in the range of 3-4 bar. Guo et al (2018) conducted an experimental and CFD investigation to explore the effect of fuel injection characteristics on the performance of a diesel engine. To simulate the combustion characteristics, a dynamic mesh is adopted.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Combustion Behavior of DI Diesel Engine with Conjunction of AMR and Embedding Refinement Strategies

Naima

Liazid²,

Bousbaa³

2021

JSAEM

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Currently, computational fluid dynamics has become an effective supplement to experimentation in the analysis and development of various engineering systems including internal combustion engines. In fact, multi-dimensional modelling of IC engines is less extensive and less time consuming than experimentation. In this aim, CONVERGE code was used to study the combustion behavior in a DI engine with various mesh control techniques including embedding and Adaptive Mesh Refinement (AMR). The simulation covers the compression, spray, combustion and expansion. A single spray plume and 1/6th of the combustion cylinder (60 degrees) is simulated. In light of the simulation results it is extremely recommended to use AMR approach in conjunction with embedding around the nozzle for running engine simulations.

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“… 22 − 24 A compression ignition two-cylinder FPEG prototype was developed in parallel by the same team, and successful combustion was also reported. 25 , 26 A prototype dual-piston type spark ignition FPEG was built by Jaeheun Kim, et al; liquefied petroleum gas (LPG) was used as the fuel. 27 …”

Section: Introductionmentioning

confidence: 99%

Realization of a Novel Free-Piston Engine Generator for Hybrid-Electric Vehicle Applications

et al. 2020

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Free-piston engine generators (FPEGs) have huge potential to be the principal energy conversion device for generating electricity from fuel as part of a hybrid-electric vehicle (EV) powertrain system. The principal advantages lay in the fact that they are theoretically more efficient, more compact, and more lightweight compared to other competing EV hybrid and range-extender solutions (internal combustion engines, rotary engines, fuel cells, etc.). However, this potential has yet to be realized. This article details a novel dual-piston FPEG configuration and presents the full layout of a system and provides technical evidence of a commercial FPEG system’s likely size and weight. The work also presents the first results obtained from a project which set-out to realize an operational FPEG system in hardware through the development and testing of a flexible prototype test platform. The work presents the performance and control system characteristics, for a first of a kind system; these show great technical potential with stable and repeatable combustion events achieved with around 700 W per cylinder and 26% indicated efficiency.

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Effect of fuel injection characteristics on the performance of a free-piston diesel engine linear generator: CFD simulation and experimental results

Cited by 36 publications

References 28 publications

Prediction Performance of Two Stroke Semi Free Piston Diesel Engine with Dual Piston System

Prediction Performance of Two Stroke Semi Free Piston Diesel Engine with Dual Piston System

Numerical Simulation of Combustion Behavior of DI Diesel Engine with Conjunction of AMR and Embedding Refinement Strategies

Realization of a Novel Free-Piston Engine Generator for Hybrid-Electric Vehicle Applications

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