PİEZO ENJEKTÖR AKTÜATÖRÜNE UYGULANAN ÖN YÜK KUVVETLERİNİN ETKİLERİ

Yıl 2020, , 39 - 50, 30.04.2020

Gültekin Karadere , Hande Şengünalp Anaç

https://doi.org/10.17482/uumfd.449041

Öz

Dizel motorlarının yüksek basınçlı yakıt enjeksiyon teknolojisi, emisyon düzenlemelerinin
gerçekleştirilmesinde tatmin edici teknolojilerden biri olarak kabul edilir. Bu teknoloji, yakıtın
atomizasyonunu geliştirerek yanma verimini iyileştirip zararlı emisyonları ve gürültüyü azaltabilir. Bu
avantajların geliştirilmesi ise ilgili parametrelerin etkilerinin tasarımcılar tarafından biliniyor olmasına
bağlıdır. Bu çalışmanın amacı piezo common rail enjektörlerin en önemli parçalarından olan aktüatör
modül üzerine uygulanan ön yük kuvvetindeki değişimin enjektörün voltaj ihtiyacına, püskürtme
miktarına ve titreşim frekansına etkilerinin deneylerle incelenmesi ve aktüatör modülü oluşturan piezo
seramiklerin voltaj altında gösterdikleri boy uzama miktarlarının araştırılmasıdır.

Anahtar Kelimeler

Piezo common rail enjektör (yüksek basınçlı ortak dağıtıcılı enjektör), aktüatör, ön yük kuvveti

The Effects of Preload Forces Applied to the Actuator of Piezo Injector

Öz

The high-pressure fuel injection technology of diesel engines is considered to be one of the
satisfactory technologies in achieving emission regulations. This technology can improve combustion
efficiency and reduce harmful emissions and noise by improving the atomization of fuel. The
development of these advantages depends on the fact that the effects of the relevant parameters are known
to the designers. The aim of this study is to investigate the effects of the change in the preload force
applied on the actuator module, which is one of the most important parts of piezo common rail injectors,
to the voltage requirement, spray amount and vibration frequency of the injectors by experiments and to
investigate the length elongation of piezo ceramics forming the actor module under voltage.

Anahtar Kelimeler

Piezo common rail injector, actuator, preload force

Kaynakça

• 1. Agarwal, A.K., Dhar, A., Srivastava, D.K., Maurya, R.K. and Singh, A.P. (2013) Effect of fuel injection pressure on diesel particulate size and number distribution in a CRDI single cylinder research engine, Fuel, 107, 84-89.
• 2. Agarwal, A.K., Singh, A.P., Maurya, R.K., Shukla, P.C., Dhar, A. and Srivastava, D.K. (2018) Combustion Characteristics of a Common Rail Direct Injection Engine using Different Fuel Injection Strategies, International Journal of Thermal Sciences, 134, 475-484.
• 3. Carstens, J.R. (1993) Electrical Sensors and Transducers, Prentice Hall, 185-199.
• 4. Chung, M.C., Kim, J., Kim, S.M., Sung, G. and Lee, J. (2015) Effects of hydraulic flow and spray characteristics on diesel combustion in CR direct-injection engine with indirect acting Piezo injector, Journal of Mechanical Science and Technology, 29 (6), 2517-2528.
• 5. d'Ambrosio, S. and Ferrari, A. (2018) Diesel engines equipped with piezoelectric and solenoid injectors: hydraulic performance of the injectors and comparison of the emissions, noise and fuel consumption, Applied Energy, 211, 1324-1342.
• 6. Ferrari, A. and Mittica, A. (2012) FEM modeling of the piezoelectric driving system in the design of direct-acting diesel injectors, Applied Energy, 99, 471-483.
• 7. Gupta, T., Kothari, A., Srivastava, D.K., and Agarwal, A.K. (2010) Measurement of number and size distribution of particles emitted from a mid-sized transportation multipoint port fuel injection gasoline engine, Fuel, 89 (9), 2230-2233.
• 8. Hardenberg, H.O. (1999) The Middle Ages of the Internal-Combustion Engine, Society of Automotive Engineers (SAE).
• 9. Jurić, F., Petranović, Z., Vujanović, M., Katrašnik, T., Vihar, R., Wang, X. and Duić, N. (2019) Experimental and numerical investigation of injection timing and rail pressure impact on combustion characteristics of a diesel engine, Energy Conversion and Management, 185, 730-739.
• 10. Panzeri, S. (2011) Das Common Rail System, Diplomarbeit, Karl-Franzens-Universität Graz.
• 11. Pogulyaev, Y.D., Baitimerov, R.M. and Rozhdestvenskii, Y.V. (2015) Detailed dynamic modeling of common rail piezo injector, Procedia Engineering, 129, 93-98.
• 12. Rissman, J. and Kennan, H. (2013) Advanced Diesel Internal Combustion Engines, Case Studies on the Government’s Role in Energy Technology Innovation, American Energy Innovation Council.
• 13. Robert Bosch GmbH (2002) Bosch Diesel Motor Management, 3.Auflage.
• 14. Robert Bosch GmbH (2005) Bosch Diesel Fuel Injection System, 5.Auflage.
• 15. Şengünalp, H. (2012) Enjektöre Uygulanan Ön Gerilme Kuvvet Değişiminin Enjektör Fonksiyonuna Etkileri, U.Ü.Müh.-Mim.Fak. Bitirme Ödevi.