ANALISA PENGARUH VARIASI PROFIL CAMSHAFT STANDAR DAN MODIFIKASI PADA GERAKAN PENUTUPAN KATUP MASUKTERHADAP TORSI, DAYA DAN SPESIFIK KONSUMSI BAHAN BAKAR MESIN SIKLUS OTTO DENGAN PENDEKATAN SIKLUS ATKINSON

Nuramal, Agus and Angky , Puspawan and Reswanto, Reswanto (2015) ANALISA PENGARUH VARIASI PROFIL CAMSHAFT STANDAR DAN MODIFIKASI PADA GERAKAN PENUTUPAN KATUP MASUKTERHADAP TORSI, DAYA DAN SPESIFIK KONSUMSI BAHAN BAKAR MESIN SIKLUS OTTO DENGAN PENDEKATAN SIKLUS ATKINSON. TEKNOSIA, 2 (14). pp. 50-58. ISSN 1978-8819

Archive (Article) JURNAL ILMIAH TEKNOSIA SEPTEMBER 2014.pdf - Bibliography Restricted to Registered users only Available under License Creative Commons GNU GPL (Software). Download (2MB)

Abstract

This research analysed the influence of standard and modification variation camshaft’s profile on closing intake valve toward the torsion, power and specific fuel consumption of Otto Cycle Machine with Atkinson Cycle Approach. It was conduct to modify the cycle of otto to make it closer to the characteristic of Atkinson cycle. standard and modification variation camshaft’s profile on closing intake valve by modifying the camshaft’s profile causes the delaying of the valve closing process. Then, the result was compared with the standard camshaft. In the standard condition, the highest torsion machine was 5.50 N-m by2400 rpm, and the lower torsion machine was on 0.86 N-m by 4300 rpm. In the modified condition, the highest torsion was 2.36 N-m by 2800 rpm, and the lower torsion was 0.65 N-m by 4300 rpm. On standardcondition the higher torsion was 1.91 hp by 2600 rpm, and the lower was0.52 hp by 4300 rpm. On the modified camshaft condition,the highest was 0.98 hp by 3200 rpm, and the lower was 0.39 hp by 4300 rpm. The higher torsion and the power were obtained in the standard camshaft condition. Spesific Fuell Consumtion (SFC) in standard condition was lower than modify camshaft condition. On standard camshaft, the lowervalue was 0.38 kg/hp-h by 2600 rpm,and on the modified camshaft the lower SFCin was 0.91 kg/hp-h by 3200 rpm.

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