Possibility of improvement of some parameters of dual fuel CI engine by pilot dose division

• Autorzy: Stelmasiak Z.
• Języki publikacji: EN

Abstrakty

EN

The paper present a test results of dual fuel engine run on natural gas and diesel oil injected as a pilot dose. Determination of possibilities of engine’s operational parameters improvement through division of the pilot dose was the main objective of the presented research. The first dose injected at ignition advance angle, the same as in case of operation on diesel oil only, has as its task to initiate process of combustion. The second dose, injected with changing delay when, as assumed, phase of combustion process is already in progress, has as its task to sustain combustion of gaseous mixture. Control of combustion process was attained through changes of injection delay angle of additional dose. Division of pilot dose effects in a considerable reduction of maximal heat release rate during combustion with simultaneous growth of average combustion rate of gas-air mixture. In result, it has been observed a growth of overall efficiency of the engine, reduction of NOx concentration in exhaust gases, and reduction of maximal combustion pressures. Simultaneously, emission of the CO and TCH was slightly worsened.

Słowa kluczowe

EN

natural gas; dual fuel engine; pilot dose; thermal efficiency; combustion parameters

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2011
• Tom: Vol. 6, no 1
• Strony: 181--190
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Stelmasiak Z.

• Technical University of Bielsko-Biala, Internal Combustion Engines and Automobiles Branch ul. Willowa 2, 43-300 Bielsko-Biała, Poland

Bibliografia

• 1. Stelmasiak Z., Larisch J., Gilowski T., Matyjasik M.: Możliwości poprawy składu mieszaniny gazowej przez dławienie powietrza przy częściowych obciążeniach silnika dwupaliwowego, Archiwum Motoryzacji 1/2007, str. 43-57, 2007.
• 2. Stelmasiak Stelmasiak., Larisch J., Gilowski T.: Możliwości sterowania dawką inicjującą oleju napędowego w dwupaliwowych silnikach ZS wyposażonych w system Common Rail, PTNSS Kongres – 2005, Szczyrk 25-28.09.2005, Paper No. PTNSS P05-C004, 2005.
• 3. Stelmasiak Z.: Analiza wpływu składu mieszaniny gaz-powietrze na parametry dwupaliwowego silnika o wtrysku bezpośrednim, Silniki Spalinowe nr 3/2005.
• 4. Friedeman Z.: Gasmotoren, Vogel Buchverlag, Würzburg, 2001.
• 5. Zua CH., Zhao J.: Development of Diesel Engines Fuelled with Natural Gas, SAE Paper No. 2001-01-3505, 2001.
• 6. Clark N.N., Atkinson Chr.M., Atkinson R.J., McDaniel T.I., ParkT.: Optimized Emission Reduction Strategies for Dual Fuel Compression Ignition Engines Running on natural Gas and Diesel. www.cemr.wvuedu/-englab/project/navistar.html, 2002.
• 7. Stelmasiak Z.: Analysis of Combustion Phenomena in Dual Fuel Engine Fed With Natural Gas (CNG). Fisita 2002 World Automotive Congress, Paper No. F02 V030, 2002.
• 8. Stelmasiak Z.: Studium spalania gazu w dwupaliwowym silniku o zapłonie samoczynnym zasilanym gazem ziemnym i olejem napędowym, Wydawnictwo ATH, nr 5/2003.