A comparative study of calculated and experimental indicated diagrams of a S.I. Engine

Blaga, Vasile; Mitran, Tudor; Rus, Alexandru; Beles, Horia; Dragomir, George

doi:10.1088/1757-899x/1220/1/012016

Cited by 2 publications

(6 citation statements)

References 2 publications

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“…Modeling the SI engine with gasoline injection proposed by the author is performed by running a computer program to determine the variation of three-dimensional and twodimensional parameters in two cases: -dependence on engine speed and excess air coefficient at ambient temperature t 0 = -35… 45ºC and p 0 = 1 • 10 5 Pa, in Annex A; [5] dependence on engine speed and ambient temperature at λ = 1 and p 0 = 1 • 10 5 Pa in Annex B. [5]; Logic of the program for modeling the SI engine with gasoline injection is presented in annex no. 37 [5].…”

Section: The Proposed Experimental Modelmentioning

confidence: 99%

“…[5]; Logic of the program for modeling the SI engine with gasoline injection is presented in annex no. 37 [5]. It is proposed to use the model of the pressure regulator and the electromagnetic injector, the model proposed by the author, to determine the mass of fuel injected per cycle and the duration of the injection, with the engine speed and load.…”

Section: The Proposed Experimental Modelmentioning

confidence: 99%

“…They refer to the inductive transducer figure 10. [5] in which a magnetic field created by a permanent magnet 1 is partly wound on a steel core 2, is manifested in the air and in all neighboring media having a good magnetic conductivity. A gear wheel 3 with a steel pin 4 (reference mark) moving in front of the transducer changing the intensity and direction of the magnetic field.…”

Section: The Proposed Experimental Modelmentioning

confidence: 99%

“… The test bed on which the experimental data were acquired is provided with an electric machine with eddy currents of a W130 Shenk type.  The setup of the test bed is presented in figure 13 [5].…”

Section: The Real Indicator Diagrammentioning

confidence: 99%

“…Figure 14 The capture with p-V cycle, the calculated and the measured chart the overlap Figure 15 The pressure sensor used for tests and its characteristics [5] This numerical results for the cycle proposed by the author of Engines with Spark Lightning in corresponding conditions above it return in table 2 and figure 16.…”

Section: Figure 13 the Test Bed Used To Obtain The Indicator Diagrammentioning

confidence: 99%

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The Indicator Diagrams in P-v Coordinates Calculated and Measured on the Engine Stand

Blaga¹,

Blaga²

2022

MVM

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This paper presents the numerical results of a simulation of the thermodynamic cycle for in spark ignition engine (SI) in normal external conditions (T 0 =293 K; p 0 =10 5 Pa) and revolution n=5500 rpm, at full charge. The simulation took in account the constraint for =1, for air pollution reduction whit combustible gases This paper presents the numerical results of a simulation of the thermodynamic cycle for in spark ignition engine (SI) in normal external conditions (T 0 =293 K; p 0 =10 5 Pa) and revolution n=5500 rpm, at full charge. The simulation took in account the constraint for =1, for air pollution reduction whit combustible gases [1]. The indicator diagram was calculated in p-V coordinates, and in p-α coordinates. Equations for thermal processes that take place in the engine were determined and then entered into a computer program. Using these equations, the state parameters were calculated at the characteristic points of the engine cycle. The research was conducted in order to obtain information that could be used improving the characteristics of an engine SI. The operating mode of the engine is defined by the speed of rotation and load, but it involves knowledge, in addition to these, of the thermal regime (parts temperature, cooling fluid temperature, intake air temperature, exhaust temperature, altitude corrections and etc.). The logic diagram of the calculation program is presented. The calculation program for determining the indicator diagram is done in Mathcad, both for the low pressure area and for the high pressure. The engine stand and the pressure transducer with their characteristics are presented. The diagrams are shown in p-V and p-φ coordinates. The p-V indicator diagrams are calculated by the presented program based on data measured on the engine stand.. The indicator diagram was calculated in p-V coordinates, and in p-α coordinates. Equations for thermal processes that take place in the engine were determined and then entered into a computer program. Using these equations, the state parameters were calculated at the characteristic points of the engine cycle. The research was conducted in order to obtain information that could be used improving the characteristics of an engine SI.

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Section: The Proposed Experimental Modelmentioning

confidence: 99%

Section: The Proposed Experimental Modelmentioning

confidence: 99%

Section: The Proposed Experimental Modelmentioning

confidence: 99%

Section: The Real Indicator Diagrammentioning

confidence: 99%

Section: Figure 13 the Test Bed Used To Obtain The Indicator Diagrammentioning

confidence: 99%

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The Indicator Diagrams in P-v Coordinates Calculated and Measured on the Engine Stand

Blaga¹,

Blaga²

2022

MVM

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The Study of the Processes That Take Place in Gasoline Injection Engines

Blaga,

Blaga

2023

MVM

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The fuel supply scheme used to model the system proposed by the authors is presented, the engine chosen, with the technical characteristics, the type of injection system adopted, the basic principle of electronic gasoline injection, the calculation cycle proposed for gasoline injection. Based on an own model, the authors realized an analytical calculation of the in diagram. The indicated diagram was also raised on an experimental stand in p-V coordinates. Using the equations from the characteristic points, the state parameters in the characteristic points of the engine cycle will be calculated. The diagram for the analytical calculation of the pressure in the intake manifold and of the intake pressure is presented; the variation of these parameters is represented depending on the speed and the ambient temperature. The logic diagram for the analytical calculation, determining the engine parameters are presented. The data obtained by calculations are compared with those obtained by measurements, and the results obtained show that the errors obtained are almost insignificant.

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A comparative study of calculated and experimental indicated diagrams of a S.I. Engine

Cited by 2 publications

References 2 publications

The Indicator Diagrams in P-v Coordinates Calculated and Measured on the Engine Stand

The Indicator Diagrams in P-v Coordinates Calculated and Measured on the Engine Stand

The Study of the Processes That Take Place in Gasoline Injection Engines

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