CATEGORY:
ADVANCED FUELS
Fuel, Volume 105, March 2013, Pages 143–168
An
analysis of spray development with iso-octane, n-pentane, gasoline, ethanol and n-butanol from a multi-hole injector under hot fuel
conditions
P.G. Aleiferis, Z.R. van
Romunde
Department of Mechanical Engineering, University College London, UK
Abstract
High-pressure
multi-hole injectors for direct-injection spark-ignition engines offer
significant benefits in terms of fuel atomization, as well as flexibility in
fuel targeting by selection of the number and angle of the nozzle’s holes.
Unfortunately, little data exists for injector-body temperatures
representative of engine operation with various fuels Bio-derived fuels further
complicate the situation, presenting the requirement to manage fuel
flexibility. The physical/chemical properties of bio-components can differ
significantly from gasoline. Consequently, it is important to study their
effects in direct comparison to liquid hydrocarbons. Authors present results
from an optical investigation, using high-speed imaging and droplet sizing,
into the effects of fuel properties, temperature and pressure conditions on the
extent of spray formation.
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