scholarly journals KONSEP MODIFIKASI UNTUK MENINGKATKAN DAYA MESIN SEPEDA MOTOR

2018 ◽  
Vol 1 (1) ◽  
pp. 38-53
Author(s):  
Nirmala Adhi Yoga Pambayun ◽  
Sukoco Sukoco ◽  
Wardan Suyanto ◽  
Sudarwanto Sudarwanto

Penelitian ini bertujuan untuk, (1) Mengetahui peningkatan daya mesin sepeda motor 4 langkah dengan sistem bahan bakar karburator setelah dimodifikasi, (a) volume mesin (cc); (b) perbandingan kompresi mesin; (c) mekanikal katup; (d) sistem pemasukan (intake); (e) sistem pembuangan (exhaust); (2) Mengetahui emisi gas buang mesin setelah dimodifikasi apakah masih masuk dalam ambang batas emisi yang ditetapkan pemerintah. Penelitian ini merupakan penelitian research and development. Subjek penelitian ini adalah mesin sepeda motor 4 langkah dengan sistem bahan bakar karburator. Alat yang digunakan untuk mengumpulkan data adalah dynotest dan exhaust gas analyzer. Data hasil pengujian dianalisis dengan statistik diskriptif berupa rata-rata dan persentase (%) serta regresi sederhana. Hasil penelitian menunjukkan, (1) Daya mesin meningkat sebesar 151 % dari 5,8 HP/6063 rpm menjadi 14,6 HP/10.171 rpm; (2) Emisi gas buang mesin setelah modifikasi masih masuk dalam ambang batas emisi yang ditetapkan pemerintah yakni HC 815 ppm dan CO 3.306 % dengan ambang batas HC  2400 ppm dan CO 5.5 %.Kata Kunci: Modifikasi, Daya, Emisi

2010 ◽  
Vol 38 (3) ◽  
pp. 315-319 ◽  
Author(s):  
C.C. Klepper ◽  
E.P. Carlson ◽  
J.J. Moschella ◽  
R.C. Hazelton ◽  
M.D. Keitz ◽  
...  
Keyword(s):  

2016 ◽  
Vol 823 ◽  
pp. 319-322 ◽  
Author(s):  
Fazal Um Min Allah ◽  
Alexandru Gruia

Global warming and climate change are the motives to find a solution for emission reduction of diesel engines. Bioethanol is renewable fuel which can be used in diesel engine as a part of biodiesel-diesel blends. The effect of bioethanol on the emission performance of diesel engine for rapeseed biodiesel-diesel blends as a function of engine load is evaluated in this paper. KDE 6500E diesel generator is used for this purpose. Carbon monoxide (CO), unburned hydrocarbons (HC), oxygen (O2) and carbon dioxide (CO2) emissions are recorded with the help of VLT-458 exhaust gas analyzer. Blends with higher concentrations of bioethanol have shown lower CO emissions while HC emissions increase with the increase in bioethanol concentration in the blends. CO2 emissions are recorded more at higher loads for all types of biodiesel and bioethanol concentrations than that of diesel fuel.


2019 ◽  
Vol 2 (01) ◽  
pp. 27-30
Author(s):  
SUGENG PRAMUDIBYO PRAMUDIBYO

The high population in Indonesia has an impact on increasing the mobility of the population in work and activities, which is followed by the increased transportation facilities needed by the community. One of the negative effects of the increasing number of vehicles is the danger of exhaust emissions. One way to minimize the danger of exhaust gases is to regulate the mixture of air and fuel on the gasoline engine. In Yamaha injection motors there is a CO setting technology, this technology will have an impact on fuel use. The standard CO on a Yamaha motorbike is 0 and can be added or reduced (±) until it reaches 30. Increasing CO one strip will cause the fuel sprayed by the injector to be reduced by 0.05 cc. Examination of exhaust gas emissions is carried out using the Qrotect 401 Engine Gas Analyzer which is capable of measuring CO2, O2, CO, HC and Lamda. Based on the test results show that the lowest exhaust emissions are produced by the vehicle at 2500 rpm and in CO-30 mode settings, namely CO gas emissions of 0.49%. So we can conclude that the lowest exhaust gas emissions are produced by the vehicle at rpm 2500 with CO-30 settings. In addition to co mode settings, variations in engine rpm also affect exhaust emissions. In different modes but with different rpm the results will also be different. In the CO 10 mode setting with rpm 1400 CO gas emission is produced at 2.102 while at 2500 rpm is produced 0.821. So at rpm 2500 produced exhaust emissions lower than rpm 1400. There is a significant effect between CO mode settings and engine rpm on motorcycle exhaust emissions.


2018 ◽  
Vol 7 (4.5) ◽  
pp. 217
Author(s):  
Yakkala MK Raghunadh ◽  
Neeluri Suresh ◽  
Mohd Mujtaba Ahmed ◽  
Konduru Ashok ◽  
A. Indra reddy

Even in 2017 many rural areas the daily food preparation works on conventional furnaces and peat coal as the fuel. It releases lot of smoke and harmful gases. The village blacksmith work also depends on peat coal. One of the alternative fuels for conventional furnace is tender coconut fuel. The tender coconut having lot of mineral values in addition to that it having lot of fuel values. The availability of tender coconut is round the year. In most of the cases these coconuts after drinking simply dumping in the municipal waste or dumping at out cuts of the cities. By making simple process we can convert this tender coconut into good fuel. A special machine designed for process of tender coconut. A detailed analysis done on the tender coconut in two different ways. The total coconut analysis is done two ways, one is on direct coconut where as other is individual elements of the coconut analysis like shell, inner coir, outer coir and coconut husk. The calorific value of each one calculated by using the bomb calorimeter. The exhaust gases also analyzed y using exhaust gas analyzer.  


1982 ◽  
Author(s):  
Isamu Usami ◽  
Hidekatu Miyake ◽  
Osamu Saitoh ◽  
Kozo Ishida ◽  
Kimio Miyatake

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