1976-02-01

A Study of Fuel Injection Systems in Diesel Engines 760551

In this study, the authors show their analytical model of the fuel injection system in a diesel engine, which is constructed to be as accurate but as simple as possible and to have good application in the development of new fuel injection systems.
In the first part, the authors initially describe the model assumptions, classification of injection phenomena, and fundamental equations considering the compressibility, inertia and viscocity of hydraulics and the movements of valves and other components to improve the accuracy of the systems.
Secondly, regarding the experimental constants and physical properties of the fuel, the authors show the method of selection they used to simplify the analytical model and to get good agreement as a result but without losing physical meanings. Correlations between calculated and experimental results are shown for some areas which have not been carefully investigated before, as follows: (1) sonic velocity in the fuel (2) pressure loss at pipe connections (3) effective area of nozzle hole (4) correction factor of valve area (5) damping factor of valve motion (6) coefficient of restitution of valve at valve seat.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Diesel Electro-injector:A Numerical Simulation Code

940193

View Details

TECHNICAL PAPER

Validation of Diesel Fuel Spray and Mixture Formation from Nozzle Internal Flow Calculation

2005-01-2098

View Details

TECHNICAL PAPER

Deposits in Diesel Fuel-Injection Pumps Caused by Incompatibility of Fuel and Oil Additives

872119

View Details

X