Realization and Testing of a Low Pressure Hydrogen Direct Injection Engine Using Commercial Injectors Università di Pisa - DESE

Format:

Conference/Event

Author/Creator:

Antonelli, Antonelli, author.

Contributor:

Martorano, Luigi

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Many technologies are being developed to solve the trouble ofthe urban pollution. Among other solutions (improvements in enginecontrol and combustion, electrical propulsion) one of the foreseenways is the employment of low or zero carbon content fuels, such ashydrogen. In fact a nearly zero emission vehicle may be obtainedthrough the hydrogen propulsion; in this case the only pollutingagents are nitrogen oxides if an internal combustion engine isused. Though fuel cells are considered as the most promisingsolution in the long term, they are still in their prototypicalphase and the use of the internal combustion engine use remainsuntil today a relevant topic.It has been evident since the 80s that direct injection is theonly method to get a high specific power without pre-ignition andbackfire phenomena. However this technique shows a higherdifficulty in getting a well-mixed charge. The process of mixingbetween air and fuel obviously depends upon many parameters, suchas the injection pressure and timing, the location of the injectorsand so on. In this study the effects of the injection parameters oncombustion, engine performances, emissions and efficiency wereanalyzed.Commercial electro-injectors were considered in this paper, andone of the main issues of the described work was the analysis ofthe engine performances and emissions as a function of the enginerotating speed and load. This paper shows the realization of adirectly injected, hydrogen-fuelled prototype and the results ofits experimental testing. Performances, consumption andNOx emissions are discussed as well as the influence ofthe injection parameters on the heat release rate

Notes:

Vendor supplied data

Publisher Number:

2012-01-0652

Access Restriction:

Restricted for use by site license