Study on fuel injector with Hydraulic Amplifier (HADI) on the example of Mercedes-Benz Actros vehicle with OM 471.9 engine

• Autorzy: Mórawski Ł , Trawiński G.

Identyfikatory

DOI

10.5604/01.3001.0012.2481

• Języki publikacji: EN

Abstrakty

EN

One of the recent trends in heavy-duty engines has been the introduction of common rail injector with hydraulic amplifier (HADI − Hydraulically Amplified Diesel Injector) capable of considerable fuel pressure injection increase in reference to fuel pressure prevailing in rail of common rail fuel system. An example of a solution of this type of injectors is the two-valve CRIN4 injectors manufactured by Bosch. They allow the control of the fuel flow rate during injection process and therefore have an impact on the combustion process. In this article, advantages related to their use are described, which allow the engines with such injectors to meet the limits of the admissible content of toxic compounds in the exhaust gases defined in the EURO VI standard. An experimental study of the operation of the Bosch IV generation common rail system was performed on the Mercedes-Benz Actros. During measurement engine load, engine speed, waveforms (electric currents) controlling operation of the selected injectors, fuel pressure in the rail and the control current of high pressure pump control valve (metering unit) were registered. Interpretations of recorded waveforms were made, indicating the areas of application of the various modes operation. The use of CRIN4 injectors for the rapid reduction of fuel pressure in rail was observed, which supports the metering unit (ZME) for pressure control.

Słowa kluczowe

EN

diesel engine; common rail systems; fuel injectors; injection rate modulation; boot injection

PL

silnik Diesla; system common rail; wtryskiwacze paliwa; modulacja szybkości wtrysku; rozruch silnika

• 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: 2018
• Tom: Vol. 25, No. 1
• Strony: 307--316
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Mórawski Ł

• Motor Transport Institute, Diagnostics and Servicing Process Department Jagiellonska Street 80, 03-301 Warsaw, Poland tel. [phone]

autor

Trawiński G.

• Military University of Technology, Faculty of Mechanical Engineering Institute of Motor Vehicles and Transportation Gen. Witolda Urbanowicza Street 2, 00-908 Warsaw, Poland tel. [phone], fax: [phone]

Bibliografia

• [1] Baumgarten, C., Mixture Formation in Internal Combustion Engines, Spinger-Verlag Berlin Heidelberg, Germany 2006.
• [2] Bennett, S., Medium/Heavy Duty Truck Engines, Fuel & Computerized Management Systems, Delmar Cengage Learning, USA 2012.
• [3] Desantes, J. M., Benajes, J., Molina, S., González, C.A., The modification of the fuel injection rate in heavy-duty diesel engines. Part 1: Effects on engine performance and emissions, In Applied Thermal Engineering, Volume 24, Issues 17-18, pp. 2701-2714, 2004.
• [4] Jankowski, A., Kowalski, M., Environmental Pollution Caused by a Direct Injection Engine, Journal of KONES, Vol. 22, Issue 4, DOI: 10.5604/12314005.1168461, pp. 133-138, 2015.
• [5] Jankowski, A., Sandel, A., Influence of Fuel Quality on Mixture Preparation and Exhaust Emissions from Diesel Engines with Common Rail System, Journal of KONES. Internal Combustion Engines, Vol. 10, Issue. 3-4, 2003.
• [6] Seebode, J., Dieselmotorische Einsptitzratenformung unter dem Einfluss von Druckmodulation und Nadelsitzdrosselung, PhD thesis, Institute of Technical Combustion, University of Hanover, Germany 2004.
• [7] Tanabe, K., Kohketsu, S., Mori, K., Kawai, K., Innovative Injection Rate Control with Next Generation Common Rail Fuel Injection System, FISITA World Automotive Congress, Seoul, Korea 2000.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).