PORTO @ 
Archivio Istituzionale della Ricerca
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishA fully predictive one-dimensional model of a Common Rail injection apparatus for diesel passenger cars is presented and discussed. The apparatus includes high-pressure pump, high-pressure pipes, injectors, rail and a fuel-metering valve that is used to control the rail pressure level. A methodology for separately assessing the accuracy of the single submodels of the components is developed and proposed. The complete model of the injection system is finally validated by means of a comparison with experimental high-pressure and injected flow-rate time histories. The predictive model is applied to examine the fluid dynamics of the injection system during either steady-state or transient operations. The influence of the pump delivered flow-rate on the rail-pressure time history and on the injection performance is analysed for different energizing times and nominal rail pressure values. A comparison between fuel metering valve and pressure-control-valve strategies is also carried out in terms of rail pressure and pump delivered flow-rate time histories. The advantages and the weak points of each strategy are highlighted: the fuel metering valve control is more efficient, due to the absence of a throttling of high-pressure fuel, but leads to poorer dynamic response during nominal rail pressure transients. Even though the injection performance is the same under steady-state working conditions, significant differences between the two strategies can occur during engine transients.
Development and Validation Procedure of a 1D Predictive Model for Simulation of a Common Rail Fuel Injection System Controlled with a Fuel Metering Valve / Ferrari, Alessandro; Pizzo, Pietro; Vitali, Ruggero. - In: SAE INTERNATIONAL JOURNAL OF ENGINES. - ISSN 1946-3936. - 11:4(2018), pp. 401-422.
| Titolo: | Development and Validation Procedure of a 1D Predictive Model for Simulation of a Common Rail Fuel Injection System Controlled with a Fuel Metering Valve |
| Autori: | |
| Data di pubblicazione: | 2018 |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.4271/03-11-04-0027 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11583/2726974
Copyright © 2021