Interaction between injection timing, EGR – rate and rate of heat release in the TDI – engine

• Autorzy: Willmann M. , Opaliński A. , Wisłocki K.
• Języki publikacji: EN

Abstrakty

EN

The high-speed diesel engine has been developed intensively in the past few years. Customer-relevant engine performance data such as BMEP, fuel consumption, exhaust and noise emissions have been improved and the advantages in comparison to the gasoline engine (fuel consumption and torque characteristics) has become more significant. To comply with the very low soot and NOx – limits diesel engines operate with high injection pressure, high EGR – rate and very late injection timing. As these low emissions are the result of different Rates of Heat Release (ROHR), it has to be investigated which features of ROHR are relevant to emissions. They provide important information as to the direction that further development work should take. The investigations were made for broad parameter variation at different engine operating points. As one result it can be pointed out that ROHR itself is not sufficient to describe emissions. At some operating points with different A/F ratios the ROHR were the same and emissions were different. However, ROHR in connection with A/F – ratio and other thermodynamic parameters give very good information on NOx and soot emissions which indicates the practical possibilities to reduce these emissions.

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2002
• Tom: Vol. 9, No. 1-2
• Strony: 275--282
• Opis fizyczny: Bibliogr. 3 poz., rys.

Twórcy

autor

Willmann M.

• Aggregate - Forschung , Volkswagen AG Postfach 1778/6, 38436 Wolfsburg phone.:[phone]

autor

Opaliński A.

• Politechnika Poznańska, ISSp i PKM Contact via: Volkswagen AG, Postfach 1778/6, 38436 Wolfsburg phone.:[phone]

autor

Wisłocki K.

• Politechnika Poznańska, ISSp i PKM phone.: [phone]

Bibliografia

• [1] Kutschera: Der Dieselmotor im Spannungsfeld zwischen Kundenanforderungen und Gesetz. 8. Symposium Dieselmotorentechnik, Ostfildern, Dez. 2001.
• [2] Willmann M., Vanhaelst R., Opalinski A.: Praktische Anwendung moderner Methoden bei der Untersuchung des Prozesses im TDI - Motor. 8. Tagung “Der Arbeitsprozess des Verbrennungsmotors”, Graz 27 und 28 September 2001
• [3] Schubiger R., Boulouchos K., Eberle M.K.: Rußbildung und Oxidation bei der dieselmotorischen Verbrennung. MTZ 5/2002