scholarly journals Analisis Manajemen Perawatan Actuator Sebagai Safety Device Dalam Memproteksi Terjadinya Overspeed Pada Mesin Penggerak Utama Kapal

2020 ◽  
Vol 1 (2) ◽  
pp. 90-97
Author(s):  
Kundori Jaken ◽  
Ali Khamdilah
Keyword(s):  
Fuel Injection ◽  
Safety Device ◽  
Injection Pump ◽  
Fuel Injection Pump

Tujuan dari tulisan ini adalah untuk menganalisis penyebab Keterlambatan respon kerja dari actuator dalam melakukan aksi kontrol pada rack fuel injection pump pada saat kapal berlayar. Actuator adalah suatu alat pendorong yang digerakkan oleh sistem penumatik (sistem udara bertekanan) ataupun system hydrolik (media minyak hydrolik) dalam dunia control di aplikasikan sebagai alat keamanan pada mesin. Ketepatan proses actuator sebagai alat yang digunakan pada alat alat keamanan pada mesin penggerak utama kapal sangat berperan sebagai bagian untuk menjaga mesin penggerak utama agar bekerja dengan kondisi aman. Dengan latar belakang lemahnya respon kerja dari actuator sebagai pendorong rack bahan bakar pada fuel injecton pump yang berdampak pada kerusakan mesin penggerak utama  dikarenakan overspeed. Permasalahan yang akan dianalisis adalah banyaknya hal yang menjadikan actuator bekerja tidak sesuai dengan fungsinya. Dalam penggunaannya actuator mendapat perintah sinyal dari tachometer yang berfungsi untuk membaca putaran mesin yang sebelumnya sinyal tersebut dikirimkan ke Safety Sistem Unit (SSU) untuk diproses serta dibandingkan dengan nilai yang diinginkan / diatur sesuai denan standart manual book dari mesin tersebut. Metode yang digunakan adalah dengan menggunakan pendekatan deskriptif kualitatif. Kesimpulan tulisan ini adalah Perlunya perawatan yang baik dalam sistem actuator untuk menghidarinya dari kegagalan dalam memproteksi kerja mesin,seperti pengecekan respon kerja dalam mendorong,sistem penggerak pneumatik ataupun hydrolik,kalibrasi nilai keluaran dari Tachometer atapun sistem dari Safety Sistem Unit (SSU)

Comparison of intake and exhaust throttling for diesel particulate filter active regeneration of non-road diesel engine with mechanical fuel injection pump

2020 ◽  
pp. 146808742092603
Author(s):  
Wonmo Kang ◽  
Sukang Pyo ◽  
Hongsuk Kim
Keyword(s):  
Fuel Consumption ◽  
Diesel Particulate Filter ◽  
Fuel Injection ◽  
Particulate Filter ◽  
Diesel Particulate ◽  
Air Mass ◽  
Filter Regeneration ◽  
Exhaust Temperature ◽  
Injection Pump ◽  
Fuel Injection Pump

Diesel particulate filter regeneration using intake and exhaust throttling is technically simple and economically efficient compared to other methods. The purpose of this study is to investigate not only the reasons for the increase in exhaust temperature during intake or exhaust throttling but also their feasibility as a diesel particulate filter regeneration technology. In this study, a non-road diesel engine having a mechanical fuel injection pump was used for experiments. The changes in exhaust temperatures were measured during intake and exhaust throttling for the no-load maximum revolutions per minute engine condition. The experimental results exhibited that both intake and exhaust throttling reduced the intake air mass flow rate and increased piston pumping, which then increased fuel consumption. These effects were the primary reasons for increasing the temperature of exhaust gases. In particular, intake throttling was more effective than exhaust throttling in terms of reducing the intake air mass flow rate. However, exhaust throttling caused larger pumping losses, resulting in higher fuel consumption. Furthermore, in case of exhaust throttling, engine combustion was possible even at high equivalence ratios because of the larger amounts of residual gases in the combustion chamber. In summary, exhaust throttling is more effective for regenerating a diesel particulate filter at a high temperature than intake throttling. In addition, this study verified the feasibility of diesel particulate filter regeneration using exhaust throttling through analyses of diesel particulate filter regeneration efficiency, fuel consumption, and exhaust concentration when regenerating the diesel particulate filter by increasing the exhaust temperature through exhaust throttling.

Paper 6: Torsional Vibrations in Fuel Injection Pump Drive Systems with Special Reference to Automotive Engines

1966 ◽  
Vol 181 (8) ◽  
pp. 84-90
Author(s):  
L. F. Martyn ◽  
T. M. B. Silcock
Keyword(s):  
Diesel Engine ◽  
Natural Frequency ◽  
Fuel Injection ◽  
Torsional Vibrations ◽  
Pump System ◽  
Automotive Engines ◽  
Injection Pump ◽  
Infinite Mass ◽  
Fuel Injection Pump ◽  
Drive Systems

The torsional vibrations which occur on the fuel injection pump of an automotive diesel engine were investigated. Calculations and tests showed that as well as vibrations transmitted from the crankshaft, the fuel pump could vibrate at the natural frequency of the torsional system consisting of the pump and the drive coupling against an infinite mass. This was excited by harmonic torques produced by the pump. Calculations were made to show the effect of variables on the natural frequency of the pump system including the instance when a crankshaft natural frequency coincided with a pump natural frequency. Calculations were also made of the effect of the engine harmonic torques on the pump vibrations. The results were verified by experiments.

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