A practical approach in the thermodynamical analysis of the TDI - process

• Autorzy: Willmann, M. , Vanhaelst, R. , Opalinski, A.
• Języki publikacji: EN

Abstrakty

EN

High speed diesel engines have been developed intensively in the past few years.The customers relevant engine performance data as: bmep, fuel consumption, exhaust and noise emissions have been improved. To reach all objectives in time, all affords of designers and scientists with the aid of a modern development will be necessary. This paper deals with new methods and theories in the thermodynamical analysis of the TOI engine, which need a cylinder indicating pressure, optical measurements and new calculation models. To evaluate the rate of heat-release, which is introduced into the 2-zone-model, the measured cylinder pressure has to be adjusted. With the aid of a new procedure the absolute level of the measured pressure can be determined. In addition to that an improved method for evaluation of the cylinder-mass in the EGR-mode will be presented. The combination of the calculated rate of heat - release and measured values from the test cell like the composition of exhaust gas will be read into a new theory of two zones. The concentration of NO and soot will be calculated in dependence of the crank angle and verified by optical measurements. The goal of this research work is to reduce the exhaust gas emissions through a better understanding of the internal combustion process. With the so obtained results it would be able to modify engine control and design. The report about the use of the new methods and theories during thermodynamic analysis at the TDI-research will be continued.

• Czasopismo: Journal of KONES
• Rocznik: 2001
• Tom: Vol. 8, No. 1-2
• Strony: 35-44
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Willmann, M.

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

autor

Vanhaelst, R.

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

autor

Opalinski, A.

• Institut fūr Fahrzeugbau Wolfsburg, Contact via: Volkswagen AG, Postfach 1778/6, 38436 Wolfsburg phone.: [phone]

Bibliografia

• [1] Hohenberg G.: Indiziertechnik. Historischer Überblick und Entwicklung bis heute. 1. DARMSTATER INDIZIERSYMPOSIUM. 17 und 18 Mai 1994
• [2] Czerwinski J., Spector R.: Application of the Oppenheim Correlation (OPC) for Evaluation of Heat Losses from Combustion in IC — Engine. SAE Paper 1492, 2000
• [3] Schweimer G. W.: NOx Bildung im Dieselmotor, Simulation mit einem 2-Zonen Modell, Volkswagen Forschung und Entwicklung, 1994
• [4] Bockhorn H.: Kinetik der Rußentstehung und Oxidation in DI-Dieselmotoren bei AbgasrlickfUhrung, Universitat Karlsruhe.