The evaluation of the characteristic injection times of a multiple fuel dose

• Autorzy: Knefel T.
• Języki publikacji: EN

Abstrakty

EN

During research works on Common Rail injection systems it was found that there were differences between the set values of the injector opening times, the values of the opening times realized by the engine controller and the actual times of the injector needle lift. It is important to learn about the relation between the above-mentioned values, as there are significant time shifts between the start of the injector control impulse and actual start of the injection. Similar phenomena may be observed upon completion of an injection, where decay of the control signal is not tantamount to the settlement of the needle in the seat. This work aims at a determination of the scope, value and direction of the changes that the characteristic injection times are subject to depending on the injection time set, fuel dose and fuel pressure. Measurements the characteristic injection parameters were made in three basic groups differing in the set sequences of injection times and injection pressures. The knowledge of the characteristic injection times enables correct designs of the control algorithms for the operation of compression-ignition engines and it also enables a precise control of the fuel dose volume in the entire period of engine use. This is proved by development works related to ultra-high pressure common rail system and conducted by one of the leading manufacturers of engine fuel systems.

• 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: 2011
• Tom: Vol. 18, No. 2
• Strony: 205--213
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Knefel T.

• Technical University of Bielsko-Biała, Department of Internal Combustion Engines and Vehicles Willowa Street 2, 43-309 Bielsko-Biała, Poland phone: [phone], fax: [phone],

Bibliografia

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