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Studi Eksperimen Variasi Tekanan Bahan Bakar Terhadap Emisi pada Mesin EFI Haryadi Nurrohman; Beni Susanto; Noto Widodo
Automotive Experiences Vol 1 No 01 (2018)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1248.608 KB) | DOI: 10.31603/ae.v1i01.2003

Abstract

Masalah klasik pada mesin-mesin EFI lama adalah emisi CO dan HC yang cenderung tinggi. Sementara, jika pembakaran diatur dalam campuran miskin (lean mixture), torsi mesin terbaik tidak diperoleh. Untuk itu, artikel ini menyajikan studi eksperimen tentang variasi tekanan bahan bakar dalam fuel rail. Untuk mengatur tekanan, sebuah adjustable pressure regulator diterapkan untuk membuat tekanan awal 1,8 sampai 2,6 Kg/cm² dengan interval 0,2. Hasilnya, emisi CO dan HC meningkat sesuai dengan peningakatan tekanan bahan bakar. Namun demikian, aplikasi adjustable pressure regulator pada mesin Efi memberikan solusi untuk melakukan pengaturan performa dan emisi dengan cara yang sederhana.
Evaluasi Ketercapaian Standar Penjaminan Mutu Penelitian Di Program Studi D3 Mesin Otomotif Universitas Muhammadiyah Magelang Dengan Metode Indeks Muji Setiyo; Budi Waluyo; Saifudin; Bagiyo Condro Purnomo; Suroto Munahar; Noto Widodo; Retno Rusdjijati
Jurnal Penjaminan Mutu Vol 4 No 01 (2018)
Publisher : UHN IGB Sugriwa Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.642 KB) | DOI: 10.25078/jpm.v4i1.397

Abstract

In the past decade, the general method for measuring the performance of research and scientific publications in a Study Program at a Higher Education is by the Rough Value (Nilai Kasar, NK) calculated per three years. This value is derived from the accreditation instrument. In fact, the calculation of the performance of research and scientific publications with NK cannot represent an annual performance. Therefore, this paper presents a new method for calculating research and scientific publications performance with an index (IP-PS and IPub-PS), which is calculated annually. An example of quality measurement practice in the Automotive Diploma Program of Universitas Muhammadiyah Magelang. As a result, calculations with IP-PS and IPub-PS are more likely to present real conditions per year than using NK.