Effects of needle response on spray characteristics in high pressure injector driven by piezo actuator for common-rail injection system

2005 ◽  
Vol 19 (5) ◽  
pp. 1194-1205 ◽  
Author(s):  
Jinwook Lee ◽  
Kyoungdoug Min
Keyword(s):  
High Pressure ◽  
Common Rail ◽  
Injection System ◽  
Piezo Actuator ◽  
Spray Characteristics ◽  
Common Rail Injection System ◽  
Common Rail Injection

Macroscopic and microscopic spray characteristics of fatty acid esters on a common rail injection system

Fuel ◽  
2017 ◽  
Vol 203 ◽  
pp. 370-379 ◽  
Author(s):  
Dong Han ◽  
Jiaqi Zhai ◽  
Yaozong Duan ◽  
Dehao Ju ◽  
He Lin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Common Rail ◽  
Fatty Acid Esters ◽  
Injection System ◽  
Spray Characteristics ◽  
Common Rail Injection System ◽  
Common Rail Injection ◽  
Acid Esters

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.

Sign in / Sign up

Export Citation Format

Share Document