ELEMENTS CONTROL THE FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE

The complexity of the processes taking place in a system of fuel injection management for an internal combustion engine requires extra effort for a proper understanding of the operating principles. This paper is intended to be an intuitive practical application able to simulate the complex electronic control of injection, through a PC and specialized software. The application provides an intuitive and friendly analysis of the processes occurring during the operation of an injection computer. Moreover, the system allows the determination of the gasoline amount injected by the various types of fuel injectors, in a certain period of time and at different pressures of the fuel, depending on the load, speed and thermal regime of the engine. The laboratory assembly for a fuel injection system is intended as an experimental stand with exclusive didactical applicability. We want to observe the main characteristics of a fuel feeding and injection system, as the identification of components for the control system, data acquisition system and fuel injection system, the analysis of the different types of signals that can be used to actuate the injectors, the establishing the principles of injector operation in accordance with the control electronics, the visualization of the injection cadence and amount injected, depending on the engine speed and load, the programming of injection computers etc.

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Impact of changes in the fuel injection controller settings on the power and torque performance depending on the engine speed

MATEC Web of Conferences ◽

10.1051/matecconf/201930201012 ◽

2019 ◽

Vol 302 ◽

pp. 01012

Author(s):

Marietta Markiewicz ◽

Natalia Dluhunovych

Keyword(s):

Internal Combustion Engine ◽

Rotational Speed ◽

Fuel Injection ◽

Combustion Engine ◽

Computer Software ◽

Engine Performance ◽

Internal Combustion ◽

Motor Vehicles ◽

Injection System ◽

Engine Operation

The internal combustion engine is the powerhouse of motor vehicles. The basic fuel used for self-ignition engine powering is diesel oil. The efficiency of an internal combustion engine depends on many factors and is defined by such parameters as power output, torque, and the engine rotational speed. The engine performance parameters can be improved by modification of the manufacturer’s computer software that controls the engine operation. The study presents results of tests of a drive unit involving adjusting the fuel injection controller settings. The modifications involved increasing the fuel dose and the air charge pressure. Tests were carried out on a load bearing chassis dynamometer. The research object was a self-ignition engine with 109 KM power and Common Rail injection system. Power and torque measurements were carried out for the engine rotational speed range up to 4000 rev/min. It was found that modifications of the manufacturer’s engine computer software contribute to power and torque increase for all the rotational speeds.

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Coupled Model of Partially Flooded Lubrication and Oil Vaporization in an Internal Combustion Engine

ASME 2005 Internal Combustion Engine Division Spring Technical Conference ◽

10.1115/ices2005-1077 ◽

2005 ◽

Cited By ~ 2

Author(s):

Boon-Keat Chui ◽

Harold J. Schock ◽

Andrew M. Fedewa ◽

Dan E. Richardson ◽

Terry Shaw

Keyword(s):

Internal Combustion Engine ◽

Piston Ring ◽

Fuel Injection ◽

Combustion Engine ◽

Internal Combustion ◽

Injection Timing ◽

Oil Viscosity ◽

Engine Operation ◽

Extreme Stress ◽

Compression Ring

The cylinder-kit assembly of an internal combustion engine experiences severe conditions during engine operation. The top compression ring, in particular, undergoes extreme stress directly from cylinder gas pressure, inertial and thermal loads. The top compression ring is often the most significantly affected piston ring, and one of the common resultant phenomena is high wear on the ring/bore surfaces. In many previous studies, the modeling of tribological phenomena at the top compression ring/bore region involves hydrodynamic and boundary lubrication, friction and wear. This present work accounts for an additional factor that may affect the piston ring/bore lubrication — the lubricant evaporative effect. A three-dimensional oil evaporative analysis is coupled into the calculation of mixed lubrication in a cyclic engine computation. The presence of the evaporation analysis allows the study of the temperature influence on the piston ring/bore lubrication in addition to its effect on oil viscosity. A prospective application of this model is in diesel engine analysis. Considering the broad operating range of modern diesel fuel injection systems, the injection timing can be made throughout the compression/expansion process. It is well demonstrated that certain areas of fuel injection operation can result in potential adverse consequences such as increased bore wear. A well known example is “bore wall fuel wetting.” Given concerns around the potential for wear-inducing interactions between the fuel injection plumes and the bore wall, we have explored a particular interaction: bore wear in response to an imposed local heating of the bore wall. The simulation result provides valuable insights on this interaction, in which higher bore wear is predicted around bore wall area with locally imposed wall heating.

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Introduction to the Conception of Combustion Process Onboard Monitoring System

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.214.83 ◽

2014 ◽

Vol 214 ◽

pp. 83-93

Author(s):

Andrzej Bieniek

Keyword(s):

Monitoring System ◽

Pressure Sensor ◽

Rotational Speed ◽

Fuel Injection ◽

Combustion Engine ◽

Combustion Process ◽

Injection System ◽

Fuel Injection System ◽

Speed Sensor ◽

Future Potential

This paper presents a conception of a system designed for monitoring combustion process in a multi-cylinder combustion engine. The proposed system is based on the application of a pressure sensor installed in one of the engine’s cylinders. The analysis of the combustion process in the remaining cylinders is possible as a result of analyzing the course of the rotational speed by means of a sensor with a large resolution integrated with engine control phase sensor. This paper presents results of the initial testing of its operation and results of research into a system named CPMOS (Combustion Process Onboard Monitoring System) dedicated to a self-ignition engine of an off-highway vehicle. The use of an algorithm which applies a synthesis of a pressure sensor signal and rotational speed sensor offers the possibility of gaining a reconstructed course of pressure in all cylinders in the engine. The proposed measurement of pressure in a cylinder not involving fuel injection system can provide more detailed information regarding the course of the combustion process in the particular cylinders. The proposed concept of the CPMOS system leads to a decrease in the overall system cost as a result of the application of a single pressure sensor in a single cylinder. The future potential application of the monitoring of the combustion in each cylinder can enable the improvement of the operating parameters of the cylinders as a result of optimizing the control of the fuel injection system, EGR system and systems used for limiting exhaust gases used in the vehicle.

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The effect of injection timing parameters for liquid LPG fuel on selected operating parameters of the internal combustion engine

Combustion Engines ◽

10.19206/ce-117321 ◽

2007 ◽

Vol 130 (3) ◽

pp. 15-25

Author(s):

Kazimierz LEJDA ◽

Artur JAWORSKI ◽

Adam USTRZYCKI

Keyword(s):

Internal Combustion Engine ◽

Combustion Engine ◽

Internal Combustion ◽

Injection System ◽

Operating Parameters ◽

Injection Timing ◽

Injection Parameters ◽

Effi Ciency ◽

Point Injection ◽

Inlet Manifold

This article presents selected results of scientifi c research concerning the infl uence of the LPG fuel sequential injection parameters on the operating parameters of the internal combustion engine. Research was performed in the Department of Vehicles and IC Engines on SI MD-111E engine, which has been adapted to LPG fuel supply in multi-point injection system to the branches of the inlet manifold. During the research the sequential single and double injection were performed. The tests results obtained show very signifi cant infl uence of the injection parameters (onset of injection and size of the dose) on the engine operating parameters such as: engine power, torque end effi ciency.

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The accuracy of modelling of the thermal cycle of a compresion ignition engine

Combustion Engines ◽

10.19206/ce-117121 ◽

2011 ◽

Vol 144 (1) ◽

pp. 37-48

Author(s):

Karol CUPIAŁ ◽

Wojciech TUTAK ◽

Arkadiusz JAMROZIK ◽

Arkadiusz KOCISZEWSKI

Keyword(s):

Numerical Analysis ◽

Internal Combustion Engine ◽

Thermal Cycle ◽

Fuel Injection ◽

Combustion Engine ◽

Combustion Process ◽

Three Dimensional ◽

Internal Combustion ◽

Power Generator ◽

Ci Engine

The results of numerical analysis the combustion process in turbocharged CI engine 6CT107 are presented in the paper. Engine was installed on the ANDORIA’s power generator of 100 kVA/80 kW. The results of modelling the combustion process for different angle setting fuel injection, compared with the results obtained by indicating the real engine. Numerical analysis was performed in two programs, designed for three-dimensional modelling of the thermal cycle the piston internal combustion engine, namely AVL FIRE and the KIVA-3V.

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