Energy aspects of the SI engine load adjustment by early closing of inlet or exhaust valve

• Autorzy: Żmudka Z. , Postrzednik S. , Przybyła G.

Identyfikatory

DOI

10.5604/12314005.1217452

• Języki publikacji: EN

Abstrakty

EN

The theoretical analysis of the SI engine load adjustment has been presented. The load especially in SI engine is highly dependent on the process of charge exchange. This process has significant impact on the effectiveness of an engine work because it is connected with the necessity of overcoming the flow resistance, then with the necessity of doing a work, so-called the charge exchange work. The flow resistance caused by throttling valve is especially high during part load operation. The open theoretical cycle has been assumed as a model of processes proceeding in the engine. Using fully variable inlet and exhaust valves timing the cycle can be realized e.g. according to two systems: system with early inlet valve closing (EIVC) and system with early exhaust valve closing (EEVC). Both systems have been analysed individually and comparatively with the open Seiliger-Sabathe cycle, which is theoretical cycle for the classical throttle governing of an engine load. Benefits resulting from application of the systems with independent inlet and exhaust valves control have been assessed on the basis of the selected parameters: a fuel dose, a cycle work, a charge exchange work and a cycle efficiency. The use of the analysed systems to governing of the SI engine load will enable to eliminate a throttling valve from inlet system and reduce the charge exchange work, especially within the range of part load operation. Decrease of the charge exchange work leads to increase of the internal and effective works, which results in increase of the effective efficiency of the spark ignition engine. Additionally, the EEVC enables realization of the internal EGR.

Słowa kluczowe

EN

spark-ignition engine; engine load; variable valve actuation; early valve closing; open theoretical cycle

• 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: 2016
• Tom: Vol. 23, No. 4
• Strony: 583--590
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Żmudka Z.

• Silesian University of Technology, Institute of Thermal Technology Konarskiego 18, 44-100 Gliwice, Poland tel.: [phone], fax: [phone]

autor

Postrzednik S.

• Silesian University of Technology, Institute of Thermal Technology Konarskiego 18, 44-100 Gliwice, Poland tel.: [phone], fax: [phone]

autor

Przybyła G.

• Silesian University of Technology, Institute of Thermal Technology Konarskiego 18, 44-100 Gliwice, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Begg, S. M., Hindle, M. P., Cowell, T., Heikal, M. R., Low intake valve lift in a port fuel-injected engine, Energy 2009, 34, 2042-2050.
• [2] Bernard, L., Ferrari, A., Micelli, D., Perotto, A., Rinolfi, R., Elektrohydraulische Ventilsteuerung mit dem „MultiAir“-Verfahren, MTZ, 12, 2009.
• [3] Clenci, A. C., Iorga-Siman, V., Deligant, M., Podevin, P., Descombes, G., Niculescu, R., A CFD (computational fluid dynamics) study on the effects of operating an engine with low intake valve lift at idle corresponding speed, Energy 2014, 71, 202-217.
• [4] Cope, D., Wright, A., Corcoran, C., Pasch, K., Fully flexible electromagnetic valve actuator: design, modeling, and measurements, SAE Technical Paper, No. 2008-01-1350, 2008.
• [5] Flierl, R., Gollasch, D., Knecht, A., Hannibal, W., Improvements to a four-cylinder gasoline engine through the fully variable valve lift and timing system UniValve, SAE Technical Paper, No. 2009-36-0081, 2009.
• [6] Franca, O. M., Impact of the Miller cycle in the efficiency of an FVVT engine during part load operation, SAE Technical Paper, No. 2009-36-0081, 2009.
• [7] Gonca, G., Sahin, B., Ust, Y., Performance maps for an air-standard irreversible Dual-Miller cycle (DMC) with late inlet valve closing (LIVC) version. Energy 2013, 54, 285-290.
• [8] Haas, M., UniAir – the first fully-variable, electro-hydraulic valve control system, 9th Schaeffler Symposium Book, 2010.
• [9] Haas, M., Rauch, M., Electro-hydraulic fully variable valve train system, ATZ autotechnology, 02, Vol. 10, 2010.
• [10] Haskara, I., Control of an electro-mechanical valve actuator for a camless engine, International Journal of Robust Control, 2009.
• [11] Jia, M., Li, Y., Xie, M., Wang T., Numerical evaluation of the potential of late intake valve closing strategy for diesel PCCI (premixed charge compression ignition) engine in a wide speed and load range, Energy 2013, 51, 203-215.
• [12] Picron, V., Postel, Y., Nicot, E., Durrieu, D., Electro-magnetic valve actuation system: first steps toward mass production, SAE Technical Paper No. 2008-01-1360, 2008.
• [13] Schröder, C., Ein neues elektromechanisches Ventiltriebssystem von Valeo, MTZ 03, 2007.
• [14] Sugimoto, C., Sakai, H., Umemoto, A., Shimizu, Y., Study on variable valve timing system using electromagnetic mechanism, SAE Technical Paper, No. 2004-01-1869, 2004.
• [15] Zammit J.P., McGhee M.J., Shayler P.J., Lawa T., Pegg I., The effects of early inlet valve closing and cylinder disablement on fuel economy and emissions of a direct injection diesel engine, Energy 2015, 79, 100-110.
• [16] Żmudka, Z., Energy and ecological aspects of the charge exchange process improvement in an internal combustion engine, Silesian University of Technology Publishing House, Gliwice 2010.
• [17] Żmudka, Z., Postrzednik, S., Flow resistance in the engine inlet-exhaust system as affected by the engine parameters, Combustion Engines 2009 1(136).
• [18] Żmudka, Z., Postrzednik, S., Przybyła, G., Late intake valve closing as a way of the throttleless control of SI engine load, Journal of KONES – Powertrain and Transport, 2012 19(1) 491-499.
• [19] Żmudka, Z., Postrzenik, S., Przybyła, G., Charge exchange control in a SI engine by early exhaust valve closing, Journal of KONES – Powertrain and Transport, 2013 20(1). 387-394.
• [20] Żmudka, Z., Postrzenik, S., Przybyła, G., Realization of the Atkinson-Miller cycle in spark-ignition engine by means of the fully variable inlet valve control system, Archives of Thermodynamics, 2014 35(3) 191-205.
• [21] Żmudka, Z., Postrzednik, S., Przybyła, G., Throttleless control of SI engine load by fully flexible inlet valve actuation system, Combustion Engines 2016 1(164).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.