Experiment - calculated analysis of working process of piston engine adapted to aviation application

2020 ◽  
pp. 15-22
Author(s):  
L.A. Finkelberg ◽  
A.N. Kostuchenkov ◽  
A.A. Zelentsov
Keyword(s):  
Piston Engine ◽  
Working Process ◽  
Calculated Analysis

Numerical Assessment of the Rates of Solid Fuel Combustion Reactions and Their Impact on the Working Process of a Solid-Fuel Piston Engine

2021 ◽  
Author(s):  
Evgen Belousov ◽  
Andrii Marchenko ◽  
Igor Gritsuk ◽  
Mykola Bulgakov ◽  
Serhiy Kravchenko ◽  
...  
Keyword(s):  
Solid Fuel ◽  
Fuel Combustion ◽  
Piston Engine ◽  
Working Process ◽  
Numerical Assessment ◽  
Solid Fuel Combustion

Analysis on Energy-Flow of a Bipropellant-Powered Hydraulic Free Piston Engine

2011 ◽  
Vol 121-126 ◽  
pp. 3102-3106
Author(s):  
Bi Zhong Xia ◽  
Gang Su ◽  
Hai Bo Xie ◽  
Hua Yong Yang
Keyword(s):  
Energy Flow ◽  
Maximum Speed ◽  
Piston Engine ◽  
Working Process ◽  
Free Piston ◽  
Heating Value ◽  
Working Cycle ◽  
Free Piston Engine ◽  
New Type ◽  
Working Efficiency

Bipropellant-powered hydraulic free piston engine (BHFPE), as a new type of HFPE, takes advantage of bipropellant in place of conventional fossil fuel, and adopts a catalytic ignition instead of the conventional spark or compression ignition. In this paper, the operational principle and working process of a BHFPE are described firstly, then the chemical formula and molar mass as well as the heating value of the bipropellant i.e. kerosene/HTP combination are dealt with respectively. Thereafter analysis on the internal energy-flow i.e. energy input, transfer, dissipation and output, during a working cycle of the BHFPE are analyzed. Additionally the operating parameters such as working efficiency, maximum speed of the free piston assembly (FPA) and the output hydraulic energy are derived.

Collaborative Design Optimization of Main Movement System of Hydraulic Piston Engine

2012 ◽  
Vol 605-607 ◽  
pp. 448-452
Author(s):  
Dian Lun Xue ◽  
Hong Xin Zhang ◽  
Ying Liu
Keyword(s):  
Collaborative Design ◽  
Optimization Method ◽  
Collaborative Optimization ◽  
Connecting Rod ◽  
Piston Engine ◽  
Working Process ◽  
New Type ◽  
Movement System ◽  
Optimizing Model ◽  
Type Power

Hydraulic confined piston engine (HCPE) is a new type power device directly turning indicating work into hydraulic power, whose working process is related to many disciplines. The optimal design of its main movement system is very important for improving performance. Based on the minimum volume, the MDO model was constructed. The model includes systematic level optimizing model and disciplinary level optimizing model of crankshaft and connecting rod. Computed with collaborative optimization method, the total volume reduces by 12.62%, among which the volume of connecting rod increases by 9.26%, but crankshaft reduces by 14.06%. The result is more integrally optimal because of considering the collaborative effect between subsystems.

Features of the Piston Engine Working Process when Working on Kerosene

2019 ◽  
pp. 14-20
Author(s):  
Yu.E. Khryashchov ◽  
O.N. Sokolov
Keyword(s):  
Ignition Delay ◽  
Fuel Injection ◽  
Fuel Efficiency ◽  
Delay Period ◽  
Technical Requirement ◽  
Piston Engine ◽  
Working Process ◽  
Factors Affecting ◽  
Exhaust Fumes ◽  
Ignition Delay Period

For aircraft in light multi-purpose aviation, piston engines are considered more efficient than gas turbine. The main technical requirement for such engines is to ensure trouble-free operation with the best possible fuel efficiency. At the same time, there are no requirements to emission of harmful substances in exhaust fumes except for the absence of visible smoke. When developing multi-purpose aircraft piston engines, it is important to ensure their multi-fuel operation, including opera-tion on TS-1 kerosene and diesel fuel. But the issues associated with setting engine control algo-rithms for operation on TS-1 kerosene are practically unexplored. In order to refine the control algo-rithms, the flow of the working process using such fuel was studied in this work. The effect of se-quencing the working process stages on the formation of the ignition delay period was shown. Based on the analysis of the factors affecting the ignition delay period, a map of the fuel injection advance angle values was generated. According to the experimental data, the activation energy of pre-flame reactions was adopted, which for kerosene TS-1 was 23–28 kJ/mol.

INJECTION SYSTEM ANALYSIS FOR A VARIABLE COMPRESSION ROTARY-PISTON ENGINE

2019 ◽  
Author(s):  
Lucas Melo Queiroz Barbosa ◽  
Lucas Tannús ◽  
Alexandre Zuquete Guarato
Keyword(s):  
System Analysis ◽  
Injection System ◽  
Piston Engine ◽  
Variable Compression

Research on sealing characteristics of annular power cylinder based on twin-rotor piston engine

2021 ◽  
pp. 095440622110214
Author(s):  
Dibo Pan ◽  
Haijun Xu ◽  
Bolong Liu ◽  
Congnan Yang
Keyword(s):  
Compression Ratio ◽  
Simulation Analysis ◽  
Piston Engine ◽  
Leakage Model ◽  
Gas Leakage ◽  
Power Cylinder ◽  
Sealing Performance ◽  
Piston Seal ◽  
Realization Process ◽  
Twin Rotor

The sealing characteristics of an annular power cylinder based on the Twin-rotor piston engine are studied, which provides a theoretical foundation for the sealing design of a new high-power density piston engine. In this paper, the basis thermodynamic realization process of an annular power cylinder is presented. The Runge Kutta equation is used to establish the coupled leakage model of adjacent working chambers under annular piston seal. And the sealing performance of the annular power cylinder is analyzed in detail. Moreover, the influence of rotor speed and compression ratio on the sealing characteristics and leakage is studied. Finally, some tests are carried out to verify the sealing principle and simulation results, which verifies the theoretical basis of simulation analysis. Results show that there are double pressure peaks in the leakage chamber between two working chambers, which is beneficial to reduce the leakage rate. Besides, increasing the speed and decreasing the compression ratio can help to reduce gas leakage. Furthermore, the effects of speed variation on the leakage are only significant when rotating at low speed. Changing the compression ratio has a greater effect on the slope of the leakage curve at a low compression ratio, and the lower the compression ratio, the better the sealing effect.

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