Using GDI technology has a lot of challenges for automotive manufacturers such as a combustion development so PFI engines have been produced and even, in some markets, their production is increasing. Regarding to the strict emission legislations, PFI engines need improvement and using novel technologies. One of these technologies is APFI concept. This concept could approximately achieve the main advantages of GDI technology by less cost and challenges. In this study, the effect of APFI on the wall wetting, fuel distribution in combustion chamber and output power are investigated. It shows that using this concept could decrease fuel film mass on intake system about 75 percent. In the other hand, fuel distribution in combustion chamber (around spark plug) becomes homogenous which causes improvement in combustion progress and increases in-cylinder peak pressure. Investigations show that the APFI engines are sensitive to the injection timing so the optimum time for start of injection is investigated.
N. Docquier and S. Candel, “Combustion control and sensors,” a review, Progress in Energy and Combustion Science, 28, 2002, pp. 107-150.
A. Posselt, A. Mai, M. Leder, R. Salvio and et al., “Advanced PFI: the economical, high-performance systems approach,” SAE Technical Paper, 36-0392, 2015.
Gasoline port fuel injection (PFI), with Advanced PFI even more energy-efficient. In: Robert Bosch Website. Available in: http://products.bosch-mobilitysolutions.com/media/en/ubk_europe/db_application/downloads/pdf/antrieb/de_5/pfi_full_ de.pdf. Access in April 2015.
M. Dufour, P. Asselin, B. Lorenzon, Y. Petillon and et all, “Advanced PFI system: twin injector on turbocharged engine,” SAE technical paper, R-2013-06-02.
S. S. Merola, P. Sementa, C.Tornatore and et al, “Effect of fuel film deposition on combustion process in PFI SI engine,” Journal of KONES Powertrain and Technology, 14, No. 3, pp. 395-402, 2007.
T. N. C. Anand and R. V. Ravikrishna, “Modelling of mixture preparation in a small engine with port fuel injection,” Progress in Computational Fluid Dynamics, 12, No. 6, pp. 375-388, 2012.
S. Padala, S. Kook and E. R. Hawkes, “Effect of ethanol port-fuel-injector position on dual-fuel combustion in an automotive-size diesel engine,” Energy & Fuels, 28, No. 1, pp. 340-348, 2013.
Y. Sh. Cheng, K. Deng and T. Li, “Measurement and simulation of wall-wetted fuel film thickness,” International Journal of Thermal Sciences, 49, April 2014, pp. 733-739.
H. Shibata, T. Mizobuchi, M. Iwamuro, A. Koda and et al., “New spray concept development for dual injection system,” SAE Technical Paper 2017-01-0835, 2017.
A. Rostampour, A. Nassiri, “Numerical investigation of the effect of knock on heat transfer in a turbocharged SI engine,” Journal of Engineering for Gas Turbines and Power, 137, No. 12, pp. 121502-8, June 2015.
P. K. Senecal, E. Pomraning and K. J. Richards, “Multi-dimensional modeling of direct-injection diesel spray liquid length and flame lift-off length using CFD and parallel detailed chemistry,” SAE Technical Paper2003-01-1043, 2003.
Y. Luan, N. Henein, and M. Tagomori, “Port-fuel-injection gasoline engine cold start fuel calibration,” SAE Technical Paper 2006-01-1052, 2006.
Rostampour, A., & Safaei Arshi, A. (2018). Numerical investigation of the effect of APFI concept on some combustion characteristics of Turbo-Charged SI engine. Fuel and Combustion, 11(3), 93-111.
MLA
Arman Rostampour; Atieh Safaei Arshi. "Numerical investigation of the effect of APFI concept on some combustion characteristics of Turbo-Charged SI engine". Fuel and Combustion, 11, 3, 2018, 93-111.
HARVARD
Rostampour, A., Safaei Arshi, A. (2018). 'Numerical investigation of the effect of APFI concept on some combustion characteristics of Turbo-Charged SI engine', Fuel and Combustion, 11(3), pp. 93-111.
VANCOUVER
Rostampour, A., Safaei Arshi, A. Numerical investigation of the effect of APFI concept on some combustion characteristics of Turbo-Charged SI engine. Fuel and Combustion, 2018; 11(3): 93-111.
)