Bondgraph Modeling and Stability Investigation of a Cummins-Type Unit Injector 871619
Dynamic modeling of a diesel injection system is imperative to identify the forces applied to the system's elements and determine the conditions under which the system will be stable. The results of dynamic modeling are especially important for injection systems with different operating modes.
This work uses a five-degree-of-freedom system to represent a diesel unit injector. The Bondgraph Method was used for formulating the kinematic and dynamic equations. The inputs to the system were the velocity of the cam follower and the pressure force exerted by the fuel on the plunger. The coefficients of the system's characteristic equation were then determined. Routh's criteria were considered to identify the region of stability for the unit injector.
Citation: Rezeka, S. and Saeed, M., "Bondgraph Modeling and Stability Investigation of a Cummins-Type Unit Injector," SAE Technical Paper 871619, 1987, https://doi.org/10.4271/871619. Download Citation
Author(s):
Sohair F. Rezeka, Mohamed N. Saeed
Affiliated:
Dept. of Mechanical Engineering, Alexandria University, Egypt
Pages: 8
Event:
1987 SAE International Off-Highway and Powerplant Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Simulation and modeling
Kinematics
Pressure
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