scholarly journals Oscillation damping in the power unit when starting the engine equipped with the Common Rail system

2018 ◽  
Vol 224 ◽  
pp. 02037 ◽  
Author(s):  
Igor Taratorkin ◽  
Victor Derzhanskii ◽  
Alexander Taratorkin
Keyword(s):  
Mechanical System ◽  
Power Unit ◽  
Dynamic Loading ◽  
Simulation Modeling ◽  
Common Rail ◽  
Common Rail System ◽  
Power Train ◽  
Rail System ◽  
The Common ◽  
Oscillation Damping

The paper studies formation of the power-train elements dynamic loading at engine starting, shows the results of experiments and of simulation modeling and substantiates the ways of reducing dynamic loading of the mechanical system under study.

Visualization of the Parameters and Changes of Signals Controlling the Operation of Common Rail Injectors

2013 ◽  
Vol 210 ◽  
pp. 136-141 ◽  
Author(s):  
Sławomir Wierzbicki ◽  
Michał Śmieja
Keyword(s):  
Fuel Injection ◽  
Common Rail ◽  
Control Signal ◽  
Electric Signal ◽  
Common Rail System ◽  
Output Stage ◽  
Rail System ◽  
Electrical Part ◽  
The Common ◽  
Proper Operation

The electromagnetic injector in the Common Rail system is the actuator directly responsible for fuel injection. Its proper operation is enabled by ensuring appropriately shaped changes of the electric signal worked out by the output stage of the controller. This paper determines the repeatability of the control signal and the possibility of using this signal for the diagnostics of the electrical part of the injector.

JUSTIFYING THE FUEL SUPPLY IN THE COMMON RAIL SYSTEM WHEN DIAGNOSING THE VEHICLE ENGINE

2021 ◽  
Vol 2 (143) ◽  
pp. 12-20
Author(s):  
Dmitriy A. Galin ◽  
◽  
Nikolay V. Rakov ◽  
Aleksandr M. Davydkin ◽  
Leonid O. Krush
Keyword(s):  
Fuel Injection ◽  
Control Unit ◽  
Technical Condition ◽  
Common Rail ◽  
Research Purpose ◽  
Training Procedure ◽  
Common Rail System ◽  
Fuel Supply ◽  
Rail System ◽  
The Common

Analysis of technical condition of diesels with accumulator Common Rail power supply system shows that the largest share of fuel equipment failures is associated with malfunction of high-pressure fuel injectors. The electronic engine control unit generates commands for biphasic fuel injection from each injector. Due to the wear of the injector elements, there is an uneven fuel supply to the engine cylinders and, as a rule, deterioration of its operation. (Research purpose) The research purpose is in studying the process of adjusting the fuel supply in the Common Rail system when diagnosing the engine of a Ford Transit vehicle. (Materials and methods) The most relevant method of commissioning Common Rail fuel system injectors are various service procedures, such as the Low Injection Training procedure. Authors used a scanner and appropriate software to estimate total fuel delivery at idle mode. Authors performed the study on a 2.4 liter Duratorq diesel engine. (Results and discussion) The article presents the engine parameters before and after adjustment (Small Injection Procedure). Before adjustment, two cylinders of the engine received more fuel than the other cylinders. It manifests in an increase in crankshaft speed. After the adjustment, the fuel supply to the cylinders was equalized, resulting in an equalization of crankshaft RPM, reduced vibration and noise. (Conclusions) The study showed that fuel adjustment and Low Injection Training should be a must for engine diagnostics. Correction is effective if the value of injection discrepancy is no more than 5 mg/stroke.

Improvement of the Robustness of the Common Rail System for the Fuel Diversification

2015 ◽  
Author(s):  
Takahito Niwa ◽  
Takashi Eguchi ◽  
Koichi Yamada ◽  
Satoshi Bunne ◽  
Toshihiko Omori ◽  
...  
Keyword(s):  
Common Rail ◽  
Common Rail System ◽  
Rail System ◽  
The Common

Dynamic Analysis of Diesel Engine Common Rail Injection System: Part II — Four-Cylinder Injection System

2001 ◽  
Author(s):  
M. Borghi ◽  
M. Milani ◽  
M. Piraccini
Keyword(s):  
High Pressure ◽  
Diesel Engine ◽  
Dynamic Behavior ◽  
Common Rail ◽  
Injection System ◽  
Common Rail System ◽  
Common Rail Injection System ◽  
Rail System ◽  
Common Rail Injection ◽  
The Common

Abstract The paper is aimed at studying the overall dynamic behavior of the Common Rail Injection System actually used on a 4 cylinder industrial Diesel engine. Firstly, the paper introduces the main characteristics of a lumped and distributed parameters model of the high pressure branch of an actual Common Rail System, and the main hypotheses assumed to model it using a multi-port approach code for the analysis of the dynamic response of hydraulic systems submitted to fast transients. The model of the Common Rail System is then used to study its dynamic behavior when involved in the handling of the engine injection cycle for medium values of the crankshaft regime and for different pressure levels in the Rail. The analysis is performed applying to the injectors, to the pressure control valve and to the high-pressure pump the control strategies imposed by the Electronic Central Unit (ECU), as actually implemented into an industrial ECU for Diesel engine management. The model reliability and accuracy are evidenced through a numerical vs. experimental data comparison, mainly in term of rail pressure dynamic behavior. The analysis successively outlined in the paper allows to state how the hydraulic behavior of the Common Rail System interact with the electro-hydraulic injectors dynamics, and to determine the influence of this interaction on the total injected mass per cycle.

Design of Pressure Sensor in Common Rail System by ANSYS Tools

2011 ◽  
Vol 88-89 ◽  
pp. 545-548 ◽  
Author(s):  
Feng Ye ◽  
Zhong Ming Wang
Keyword(s):  
Signal Processing ◽  
Strain Gage ◽  
Pressure Sensor ◽  
Electrical Signal ◽  
Common Rail ◽  
Common Rail System ◽  
Rail System ◽  
The Common ◽  
Signal Processing Circuit ◽  
Processing Circuit

A pressure sensor used in the Common Rail System is designed to monitor the oil pressure changing form 0 to 200MPa in the temperature from -40 to 130°C. It is composed of elastic cell, strain gage and signal processing circuit. Elastic cell produces liner strain with the oil pressure; strain gage transforms this strain into electrical signal that is enlarged and processed by signal processing circuit. To describe the relation of oil pressure with the strain, the stress distribution and strain of elastic cell with different shape is simulated, applying ANSYS tool in the 200MPa pressure. Then, an acceptable shape is produced and tested. It has the similar features with simulated result and works well.

scholarly journals The Development Of A Piezoelectric Fuel Injector For Diesel Engine

2021 ◽  
Author(s):  
Kei S.A. Chiu
Keyword(s):  
Diesel Engine ◽  
Common Rail ◽  
Fuel Injector ◽  
Common Rail System ◽  
Rail System ◽  
Key Factor ◽  
Final Design ◽  
The Common ◽  
To Come ◽  
Direct Acting

Stringent emission levels challenge automotive industries to come up with innovative ways of improving existing technologies. In advancing diesel engine technology, the key factor lies in further developing a piezoelectric fuel injector in the common-rail system. A direct acting piezoelectric fuel injector prototype for the common-rail system was developed to preserve the lifetime of the actuator, achieve an adequate needle lift, and response quickly. Through analytical work and ANSYS simulations, problems were encountered on the initial designs. These problems were overcome with successive design improvements. Simulations and analytical estimations provide evidence on the potential performance on these improvements. After design iterations, a prototype was fabricated according to the final design. Experimental work further validated that the fuel injector designed is capable of meeting the requirements. Problems with the test results are discussed for further improvements on the design.

scholarly journals FORECAST EVALUATION OF POSSIBLE VALUES OF FUEL INJECTION PRESSURE OF COMMON RAIL SYSTEM

2020 ◽  
Vol 15 (2) ◽  
pp. 92-95
Author(s):  
Vladimir Ivanov ◽  
Aleksandr Semenov ◽  
Vladislav Gavrilov ◽  
Aleksey Novikov ◽  
M. Volhonov
Keyword(s):  
Power System ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Operating Conditions ◽  
Common Rail ◽  
Analytical Dependence ◽  
Common Rail System ◽  
Rail System ◽  
The Common ◽  
Fuel Injection Pressure

In engineering practice, forecasting is considered to be the most effective methods for assessing reliability indicators and determining expected technical and economic indicators, taking into account the technical level of improving the diesel power system. The solution of such problems requires a description of changes in the parameters of objects at different points in time. The purpose of the research is to predict the possible values of the fuel injection pressure of the Common Rail system for the near future for the timely creation of operating conditions, maintenance and repair measures. A statistical method was used to predict changes in the fuel injection pressure in the diesel power system. The forecasting technique included the stages of analyzing the initial information, choosing the analytical dependence of the change in the considered parameter in the past, extrapolating the resulting dependence for the forecast period and evaluating the results. The choice of analytical dependences of changes in the estimated pressure value was carried out by the method of least squares. The degree of connection between the considered analytical dependence and the line constructed from the initial data was determined by the value of the correlation coefficient. As the technical, economic and environmental requirements become more stringent, the requirements for the power supply system of internal combustion engines are growing, which necessitates an increase in the functionality of the fuel equipment, primarily in terms of the value of the fuel injection pressure. The paper considers the results of a predictive assessment of possible values of injection pressure of the Common Rail fuel system. The results of the study make it possible to predict an increase in the fuel injection pressure of the Common Rail system by 2026 up to 300 MPa. To ensure high indicators of technical readiness of the enterprises of technical service of diesel fuel equipment, it is necessary to take into account possible changes in the values of the fuel injection pressure in the future

A model-based gain scheduling approach for controlling the common-rail system for GDI engines

2012 ◽  
Vol 85 (4) ◽  
pp. 419-436 ◽  
Author(s):  
Alessandro di Gaeta ◽  
Umberto Montanaro ◽  
Giovanni Fiengo ◽  
Angelo Palladino ◽  
Veniero Giglio
Keyword(s):  
Gain Scheduling ◽  
Common Rail ◽  
Common Rail System ◽  
Model Based ◽  
Rail System ◽  
The Common ◽  
Gdi Engines
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