The doctoral dissertations of the former Helsinki University of Technology (TKK) and Aalto University Schools of Technology (CHEM, ELEC, ENG, SCI) published in electronic format are available in the electronic publications archive of Aalto University - Aaltodoc.
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Diesel Fuel Injection System Simulation
Jukka Kiijärvi
Dissertation for the degree of Doctor of Technology to be presented with due permission of the Department of Mechanical Engineering for public examination and debate in Auditorium Kolab-118 at Helsinki University of Technology (Espoo, Finland) on the 28th of August, 2003, at 12 o'clock noon.
Dissertation in PDF format (ISBN 951-22-6659-8) [967 KB]
Dissertation is also available in print (ISBN 951-22-6657-1)
Abstract
The injection process of a medium-speed diesel engine was studied in detail, using a computer program developed for this purpose. In the program, the injection pump was replaced with the measured pressure at the junction between the pump and high-pressure pipe. The results were calculated with a full and approximately a half load. The calculated and measured results corresponded moderately well with each other. In the calculation, special interest was paid to the flow of the injection valve holes. Most of the fuel was injected into the cylinder from the cavitating flow of these holes. During the after-injection, no cavitation occurred in the holes. Models of different hydraulic systems can be built from the components of the program.
Keywords: diesel engine, diesel fuel injection system, simulation
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© 2003 Helsinki University of Technology
Last update 2011-05-26