Investigation of the effect of spring and washer on system response in a passenger car clutch disc assembly
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Date
2020-02-03
Authors
Ürüt, Cihan
Journal Title
Journal ISSN
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Publisher
Bursa Uludağ Üniversitesi
Abstract
İçten yanmalı motora sahip bir binek otomobilin motoru ile şanzımanı arasındaki mekanik güç aktarımını ihtiyaca göre düzenleyen eleman debriyaj komplesidir. Debriyaj komplesinin alt elemanlarından olan disk komplesinden motor içerisinde yakıt hava karışımının patlaması ile meydana gelen açısal titreşimleri sönümlemesi de beklenmektedir. Bu tez çalışmasında da disk komplesinin açısal titreşimlerini sönümleme kapasitesi önce araç testi ile sonrasında benzetim çalışmaları ile incelenmiştir. Araç testinde algılayıcılar ile motor ve şanzıman taraflarındaki açısal hız değerleri ölçülerek açısal titreşim değerleri hesaplatılmıştır. Benzetim çalışmasında Amesim programında sistemi temsil eden temel elemanlar kullanılarak benzetim modeli kurulmuş ve elde edilen sonuçlar araç test sonuçlarıyla karşılaştırılmıştır. Testlerde kullanılan debriyaj sistemindeki disk komplesinin motordan gelen titreşimleri yeterli oranda sönümlemediği görülmüştür. Çalışmanın ikinci aşamasında debriyaj disk komplesinde açısal titreşimleri sönümlemekle görevli olan temel elemanlardan bası yaylarının ve sürtünme rondelalarının yaylılık katsayısı ve sürtünme yük değerlerinin değişimlerinin sistem cevabına etkisi incelenmiştir. Sistem cevabını iyileştirebilmek için debriyaj disk komplesinin karakteristiğine uygun olacak şekilde beş farklı değer grubu ile benzetim çalışmaları tekrarlanmıştır. Yapılan bu denemelerin sonuçları incelenmiş ve sistem cevabında iyileşmeler elde edilebilen değerlerin tespit edilmesi sağlanmıştır.
The product that regulates the mechanical power transmission between the engine and the transmission of a passenger car with an internal combustion engine is the clutch assembly. It is also expected to be damped the angular vibrations caused by the explosion of fuel air mixture in the engine from the disc assembly, which is one of the sub component of the clutch assembly. In this thesis study, the absorbtion capacity of the disc assembly of the angular vibrations was examined first by vehicle testing and then by simulation studies. In the vehicle test, angular vibration values were calculated by measuring the angular velocity values with the sensors at the engine and transmission sides. In the simulation study, the simulation model was established by using the basic elements representing the system in the Amesim software and the results were compared with the vehicle test results. It was observed that the disc assembly in the clutch system used during the tests could not dampen the vibrations enough from engine side. In the second stage of the study, the effect of changes in the spring coefficient and friction load values of the damper springs and friction washers on the clutch disc assembly were investigated. In order to improve the system response, simulation studies were repeated with five different value groups in accordance with the characteristics of the clutch disc assembly. The results of these trials have been examined and the values that can provide improvement in system response have been determined.
The product that regulates the mechanical power transmission between the engine and the transmission of a passenger car with an internal combustion engine is the clutch assembly. It is also expected to be damped the angular vibrations caused by the explosion of fuel air mixture in the engine from the disc assembly, which is one of the sub component of the clutch assembly. In this thesis study, the absorbtion capacity of the disc assembly of the angular vibrations was examined first by vehicle testing and then by simulation studies. In the vehicle test, angular vibration values were calculated by measuring the angular velocity values with the sensors at the engine and transmission sides. In the simulation study, the simulation model was established by using the basic elements representing the system in the Amesim software and the results were compared with the vehicle test results. It was observed that the disc assembly in the clutch system used during the tests could not dampen the vibrations enough from engine side. In the second stage of the study, the effect of changes in the spring coefficient and friction load values of the damper springs and friction washers on the clutch disc assembly were investigated. In order to improve the system response, simulation studies were repeated with five different value groups in accordance with the characteristics of the clutch disc assembly. The results of these trials have been examined and the values that can provide improvement in system response have been determined.
Description
Keywords
Debriyaj mekanik yapısı, Clutch mechanic structure, Açısal titreşimler, Yaylılık katsayısı, Açısal sürtünme yükü, Rezonans, Rotational vibrations, Spring stiffness
Citation
Ürüt, C. (2019). Bir binek otomobil debriyaj disk komplesindeki yay ve rondelanın sistem cevabına etkisinin incelenmesi. Yayınlanmamış yüksek lisans tezi. Bursa Uludağ Üniversitesi Fen Bilimleri Enstitüsü.