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Experimental and numerical investigation of injection timing and rail pressure impact on combustion characteristics of a diesel engine
ID
Jurić, Filip
(
Avtor
),
ID
Petranović, Zvonimir
(
Avtor
),
ID
Vujanović, Milan
(
Avtor
),
ID
Katrašnik, Tomaž
(
Avtor
),
ID
Vihar, Rok
(
Avtor
),
ID
Wang, Xuebin
(
Avtor
),
ID
Duić, Neven
(
Avtor
)
PDF - Predstavitvena datoteka,
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(1,40 MB)
MD5: A47116D5F11AE599C80FF4DC44D36D94
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0196890419302225?via%3Dihub
Galerija slik
Izvleček
To explore the influence of fuel injection strategy on the combustion process, the Computational Fluid Dynamics (CFD) simulations were performed, and simulation results were validated against the experimental data measured at different rail pressures and injection timings. The experiments were conducted on a diesel engine equipped with an advanced injection system that allows full control over the injection parameters. To model the combustion process of EN590 diesel fuel, two different approaches were used: the General Gas Phase Reactions (GGPR) approach and the 3-zones Extended Coherent Flame Model (ECFM-3Z+). The calculated results, such as mean pressure and rate of heat release, were validated against experimental data in operating points with different injection parameters in order to prove the validity of spray and combustion sub-models. At the higher injected pressure, GGPR model showed better prediction capability in the premixed phase of combustion process, compared to the ECFM-3Z+ model. Nevertheless, in the rate-controlled phase of combustion process, ECFM-3Z+ model shows stronger diffusion of temperature field, due to the more detailed consideration of combustion diffusion phenomena in the ECFM-3Z+ governing equations. Furthermore, the results show that the rail pressure has a lower impact on the combustion process for injection timing after the Top Dead Centre (TDC). Both, single and multi-injection cases are found to be in a good agreement with the experimental data, while the GGPR approach was found to be suitable only for combustion delay determination and ECFM-3Z+ also for the entire combustion process.
Jezik:
Angleški jezik
Ključne besede:
diesel engines
,
combustion modelling
,
fuel injection
,
computational fluid dynamics
,
general gas phase reactions
,
coherent flame model
,
sprays
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Recenzirani rokopis
Leto izida:
2019
Št. strani:
Str. 730-739
Številčenje:
Vol. 185
PID:
20.500.12556/RUL-107600
UDK:
621.43(045)
ISSN pri članku:
0196-8904
DOI:
10.1016/j.enconman.2019.02.039
COBISS.SI-ID:
16595739
Datum objave v RUL:
30.04.2019
Število ogledov:
2394
Število prenosov:
582
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Objavi na:
Gradivo je del revije
Naslov:
Energy conversion and management
Skrajšan naslov:
Energy convers. manage.
Založnik:
Elsevier
ISSN:
0196-8904
COBISS.SI-ID:
2618919
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
motorji s kompresijskim vžigom
,
modeli zgorevanja
,
vbrizg goriva
,
računalniška dinamika tekočin
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0401
Naslov:
Energetsko strojništvo
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