<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In recent years, there has been a growing interest in alternative sources of power supply for internal combustion engines. Liquefied petroleum gas injection systems are among the most popular. It becomes necessary to know mathematical descriptions of the operation of individual components. The article presents a mathematical model that describes the operation of the low-pressure gas injector. Valtek plunger injector was chosen as the test object. The mathematical description includes three parts, i.e. electric, mechanical and pneumatic. The electrical part describes the generation of electromagnetic force by a circuit with a coil, in the mechanical equilibrium equation of forces acting on the plunger, and in the pneumatic part the air pressure on the plunger. The calculations were performed in the Matlab/Simulink environment, creating current waveforms, acting forces and plunger displacement. Correctness of mathematical description and determined in the course of opening and closing time calculations were related to the values declared by the manufacturer, showing differences below 3%. The presented mathematical model can be modified for other injector design solutions.</p></abstract>

In recent years, there has been a growing interest in alternative sources of power supply for internal combustion engines. Liquefied petroleum gas injection systems are among the most popular. It becomes necessary to know mathematical descriptions of the operation of individual components. The article presents a mathematical model that describes the operation of the low-pressure gas injector. Valtek plunger injector was chosen as the test object. The mathematical description includes three parts, i.e. electric, mechanical and pneumatic. The electrical part describes the generation of electromagnetic force by a circuit with a coil, in the mechanical equilibrium equation of forces acting on the plunger, and in the pneumatic part the air pressure on the plunger. The calculations were performed in the Matlab/Simulink environment, creating current waveforms, acting forces and plunger displacement. Correctness of mathematical description and determined in the course of opening and closing time calculations were related to the values declared by the manufacturer, showing differences below 3%. The presented mathematical model can be modified for other injector design solutions.

Modelling of the Low-Pressure Gas Injector Operation

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Modelling of the Low-Pressure Gas Injector Operation"}

In recent years, there has been a growing interest in alternative sources of power supply for internal combustion engines. Liquefied petroleum gas injection...

Modelling of the Low-Pressure Gas Injector Operation

Published Online: Apr 30, 2020

Page range: 29 - 35

Received: Mar 06, 2020

Accepted: Apr 13, 2020

DOI: https://doi.org/10.2478/ama-2020-0005

Keywords
Mechanical Engineering, Combustion Engines, Alternative Fuel Supply, Modelling

© 2020 Dariusz Szpica et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Modelling of the Low-Pressure Gas Injector Operation

Published Online: Apr 30, 2020

Page range: 29 - 35

Received: Mar 06, 2020

Accepted: Apr 13, 2020

DOI: https://doi.org/10.2478/ama-2020-0005

KeywordsMechanical Engineering, Combustion Engines, Alternative Fuel Supply, Modelling

© 2020 Dariusz Szpica et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Mechanical Engineering, Combustion Engines, Alternative Fuel Supply, Modelling