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 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.

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.

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.

scholarly journals Characterization of spray and combustion processes of biodiesel fuel injected by diesel engine common rail system

Fuel ◽  
2013 ◽  
Vol 104 ◽  
pp. 838-846 ◽  
Author(s):  
Olawole Abiola Kuti ◽  
Jingyu Zhu ◽  
Keiya Nishida ◽  
Xiangang Wang ◽  
Zuohua Huang
Keyword(s):  
Diesel Engine ◽  
Common Rail ◽  
Biodiesel Fuel ◽  
Common Rail System ◽  
Rail System ◽  
Combustion Processes

Delphi Common Rail system with direct acting injector

MTZ worldwide ◽  
2008 ◽  
Vol 69 (10) ◽  
pp. 32-38 ◽  
Author(s):  
Detlev Schöppe ◽  
Stefan Zülch ◽  
Martin Hardy ◽  
Derk Geurts ◽  
Rainer W. Jorach ◽  
...  
Keyword(s):  
Common Rail ◽  
Common Rail System ◽  
Rail System ◽  
Direct Acting

4th Generation Diesel Common Rail System: Realizing Ideal Structure Function for Diesel Engine

2013 ◽  
Author(s):  
Shuichi Matsumoto ◽  
Charles Klose ◽  
Jason Schneider ◽  
Noriaki Nakane ◽  
Daiji Ueda ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Structure Function ◽  
Common Rail ◽  
Ideal Structure ◽  
Common Rail System ◽  
Rail System

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.

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