This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Cause of Exhaust Smoke and Its Reduction Methods in an HSDI Diesel Engine Under High-Speed and High-Load Conditions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
Annotation ability available
The cause of the exhaust smoke and its reduction methods in a small DI Diesel engine with a small-orifice-diameter nozzle and common rail F.I.E. were investigated under high-speed and high-load condition, using both in-cylinder observations and Three-dimensional numerical analyses. The following points were clarified during this study.
At these conditions, fuel sprays are easily pushed away by a strong swirl, and immediately flow out to the squish area by a strong reverse squish. Therefore, the air in the cavity is not effectively used. Suppressing the airflow in a piston cavity, using such ideas as enlarging the piston cavity diameter or reducing the port swirl ratio, decreases the excessive outflow of the fuel-air mixture into the squish area, and allows the full use of air in the whole cavity. Hence, exhaust smoke is reduced.
CitationHotta, Y., Nakakita, K., Fuyuto, T., Inayoshi, M. et al., "Cause of Exhaust Smoke and Its Reduction Methods in an HSDI Diesel Engine Under High-Speed and High-Load Conditions," SAE Technical Paper 2002-01-1160, 2002, https://doi.org/10.4271/2002-01-1160.
Compression Ignition Combustion and In-Cylinder Diesel Particulates and Nox Control
Number: SP-1698 ; Published: 2002-03-04
Number: SP-1698 ; Published: 2002-03-04
- BadamiM., NuccioP., TruccoG., Influence of Injection Pressure on the Performance of a DI Diesel Engine with a Common Rail Fuel Injection System, SAE 1999-01-0193, 1999.
- CichockiR., HerzogP., Will the HSDI Diesel Engine Meet the Legislative Challenges of Euro III/IV 1998 FISITA World Automotive Congress, Paris Sept 27-Oct.1, 1998.
- UludoganA., FosterD.E., and ReitzR.D., Modeling the Effect of Engine Speed on the Combustion Process and Emissions in a DI Diesel Engine, SAE 962056, 1996.
- KoboriS., KamimotoT. and AradiA.A., A Study of Ignition Delay of Diesel Fuel Sprays, Int. J. Engine Research, Vol.1 No.1, 2000, pp.29-39.
- Ikegami, M., Yamane, K., Optimal Nozzle-Orifice Diameter for High-Pressure Fuel Injection of a Diesel Engine (in Japanese with English summary), Trans. Jpn.Soc. Mech. Eng., Series B, Vol.59, No.568, p. 4046-4051, 1993.
- Nakakita. K. et al., A Study on Diesel Combustion with High-Pressure Fuel Injection (Improvement of Combustion and Exhaust Emissions Using Small-Orifice-Diameter Nozzles) (in Japanese with English summary), Trans. Jpn. Soc. Mech. Eng., Series B, Vol.60, No.577, and p. 3198-3206, 1994.
- StumppG., RiccoM., Common Rail-An Attractive Fuel Injection System for Passenger Car Diesel Engines, SAE 960870, 1996.
- SchommersJ. DuvinageF. et al., Potential of Common Rail Injection System for Passenger Car DI Diesel Engines, SAE 2000-01-0944, 2000.
- WickmanD.D., ReitzR.D., Methods and Results from the Development of a 2600 bar Diesel Fuel Injection System, SAE 2000-01-0947, 2000.
- Kammerdiener T., Burgler L., Ein Common-Rail-Konzept mit druckmodulierter Einspritzung, MTZ Motortechnische Zeitschrift 6 1(2000) 4, pp.230-238, 2000.
- BianchiG.M., PelloniP., CorcioneF.E., MattarelliE., BertoneF.L., Numerical Study of the Common Rail H.S.D.I. Diesel Engines, SAE 2000-01-1179, 2000.
- HiroyasuH. and AraiM., Structure of Fuel Sprays in Diesel Engines, SAE900475, 1990.
- The Influence of Injector Parameters on the Formation and Break-Up of a Diesel Spray, SAE 2001-01-0529, 2001.
- IIyamaA., MatsumotoY. et al. Spray Formation Improvement of VCO Nozzle for DI Diesel Smoke Reduction, IMechE Conference on Diesel Fuel Injection Systems, 1992.
- BeatriceC., BelardiniP. et al., Fuel Jet Models for Multidimensional Diesel Combustion Calculation: An Update, SAE 950086, 2000.
- Inagaki, K., Effects of Piston Cavity Configuration on In-cylinder Flow and Mixture Formation of a DI Diesel Engine (in Japanese with English summary), Journal of JSAE, Vol.31, No.3, p 51-56, 2000.