Use of fuel-borne reductants for NOx reduction in diesel engine

• Autorzy: Szlachta Z. , Cisek J.
• Języki publikacji: EN

Abstrakty

EN

The method used by the authors involves reduction of nitrogen oxides by means of chemically active hydrocarbons (radicals) from the fuel. In order to obtain partially oxidized and thermally decomposed hydrocarbons, the post-injection of fuel (the injection of an additional portion of fuel) into the diesel engine cylinder during the expansion stroke was implemented. To perform this function, a special fuel supply system consisting of two injection pumps was designed. One of the pumps was injecting the main (primary) fuel dose, and the other one - the additional fuel dose. Injection of both fuel doses was accomplished by the same injector. A catalytic converter was used in the exhaust system of the one-cylindertest engine. During the tests, the fuel post-injection angle (relative to the TDC) was changed. It was found that using that method of the reducing agent dosage, the total effect of nitrogen oxide reduction was a combination of the effects obtained in the engine cylinder by Selective NonCatalytic Reduction (SNR) and the effects obtained in the catalytic converter by Selective Catalytic Reduction (SCR). In test conditions, the SNRmethod was found to be more efficient.

• 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: 2001
• Tom: Vol. 8, No. 1-2
• Strony: 241--250
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Szlachta Z.

autor

Cisek J.

• Cracow University of Technology Institute ofMotor Vehicles and Internal Combustion Engines ul. Warszawska 24,31-155 Krakow, Poland tel./fax [phone],