scholarly journals Pengaruh Variasi Intake Lobe Lift, Exhaust Lobe Lift Dan Celah Katup Terhadap Konsumsi Bahan Bakar Pada Sepeda Motor

2020 ◽  
Vol 3 (01) ◽  
pp. 23-26
Author(s):  
Musa Wahyu Pangeran ◽  
Endry Meydiant ◽  
M. Agung Pribadi
Keyword(s):  
Experimental Method ◽  
Fuel Consumption ◽  
Research Method ◽  
Fossil Fuel ◽  
Positive Impact ◽  
Fuel Oil

Motorbikes that are very much operated every day need fuel oil which is a fossil fuel that has been depleted and cannot be renewed. With the current conditions, it is necessary to control fuel consumption on a motorcycle. Setting the intake lobe lift, the exhaust lobe lift and valve gap have a positive impact on fuel consumption. There has been a lot of research about setting the intake lobe lift, the exhaust lobe lift and valve gap. The number of conventional motorcycle vehicles that are still operating requires special arrangements and deeper studies to be able to be economical in fuel consumption. The objectives of this study are: (1) to identify the factors that cause high fuel consumption. The research method uses the experimental method. By using pertamax. . The results showed that: 1) modification 2 uses the longest fuel consumption, and 2) there are effects of variations in the intake lobe lift and exhaust lobe lift on fuel consumption, 3) there is an effect of adjusting valve gap variations on fuel consumption, 4) there are the effect of variations in the intake lobe lift and exhaust lobe lift and adjustment of valve gap variations on fuel consumption.

PENGARUH INTAKE DAN EXHAUST LOBE LIFT SERTA CELAH KATUP TERHADAP KONSUMSI BAHAN BAKAR

2020 ◽  
Vol 1 (2) ◽  
pp. 44-49
Author(s):  
Musa Wahyu Pangeran
Keyword(s):  
Fuel Consumption ◽  
Research Method ◽  
Fossil Fuels ◽  
Positive Impact ◽  
Experimental Methods ◽  
Fuel Use ◽  
Bottom Dead Center

Abstrak: Sepeda motor membutuhkan bahan bakar fosil dan saat ini cadangannya semakin berkurang serta tidak dapat diperbarui. Dengan kondisi saat ini, perlu untuk mengontrol penggunaan bahan bakar pada sepeda motor. Pengaturan intake lobe lift, exhaust lobe lift dan celah katup berdampak positif pada konsumsi bahan bakar. Tujuan dari penelitian ini adalah untuk menguji pengaruh pengaturan intake lobe lift, exhaust lobe lift dan celah katup terhadap konsumsi bahan bakar pada sepeda motor Honda Supra 125. Metode penelitian menggunakan metode eksperimental. Hasil penelitian menunjukkan bahwa ada pengaruh variasi intake lobe lift, exhaust lobe lift dan celah katup terhadap konsumsi bahan bakar. Konsumsi bahan bakar terlama (irit) yaitu pada modifikasi camshaft intake lobe lift 250 sebelum Titik Mati Atas (TMA) dan exhaust lobe lift 450 setelah Titik Mati Bawah (TMB), celah katup masuk (in) adalah 0,15 mm dan keluar (ex) adalah 0,15 mm.   Abstract: Motorcycles need fossil fuels and currently reserves were decreasing and cannot be renewed. Under current conditions, it is necessary to control fuel use on motorbikes. The intake lobe lift, exhaust lobe lift and valve gap settings have a positive impact on fuel consumption. The purpose of this study was to examine the effect of regulating intake lobe lifts, exhaust lobe lifts and valve fissures on fuel consumption on Honda Supra 125 motorcycles. The research method used experimental methods. The results showed that there was an effect of variations in intake lobe lift, exhaust lobe lift and valve gap on fuel consumption. Economical fuel consumption is the modification of the intake lobe lift camshaft 250 before Top Dead Center (TDC) and exhaust lobe lift 450 after Bottom Dead Center (BDC), valve gap in 0.15 mm and ex 0.15 mm.

Kajian Dampak Penghapusan Bbm Pertalite terhadap Profitabilitas PT Pertamina Tahun 2021

2021 ◽  
Vol 4 (1) ◽  
pp. 154-160
Author(s):  
Fitry Primadona ◽  
Iqbal Tiar Rizaldi
Keyword(s):  
Fuel Consumption ◽  
Motor Vehicle ◽  
Positive Impact ◽  
Fuel Oil ◽  
Selling Price ◽  
Vehicle Exhaust ◽  
Transportation Fuel ◽  
High Inflation ◽  
The Government ◽  
The Impact

Energy Fuel Oil (BBM) is one of the most needed by the community. Its use as a vehicle transportation fuel makes the level of fuel consumption high. Pertalite as one type of fuel PT.Pertamina with Octane 90 dominates fuel consumption, this is because the quality of the fuel is cleaner than premium and the selling price is cheaper than Pertamax. However, the government is discussing the elimination of BBM below Octane 91 starting in 2022, namely Premium and Pertalite. The elimination strategy is a simplification of product variants and complies with the Regulation of the Minister of Forestry and Environment (KLHK) Number P.20/Menlhk/Setjen/Kum.1/3/2017 which regulates the issue of quality standards for new types of motor vehicle exhaust emissions for motorized vehicles four or more wheels. The purpose of this study was to examine the impact of the elimination of Pertalite fuel on the profitability of PT.Pertamina in 2022. The method of this research was descriptive qualitative using a literature review. The results show that the elimination of Pertalite will create high inflation and will suppress the profitability of PT.Pertamina. Inflation will have a positive impact on Pertamina's profitability although it is not significant. This happens because consumers are forced to buy products or goods that are sold because part of the basic needs will still be purchased even though the price rises.  Keywords: BBM, Pertalite, Profitability, Pertamina

scholarly journals Analysis of the use bioethanol-pertalite mixtures in motorcycles on fuel consumption efficiency

2021 ◽  
Vol 926 (1) ◽  
pp. 012049
Author(s):  
B S Wibowo ◽  
F I P Sari ◽  
Y Setiawan ◽  
P Prayitnoadi ◽  
M D Adha
Keyword(s):  
Fuel Consumption ◽  
Research Method ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Engine Speed ◽  
Fossil Fuel ◽  
Consumption Data ◽  
The World ◽  
The Right ◽  
Consumption Efficiency

Abstract Indonesia is one of the countries in the world that depend on fossil fuels. Fossil fuels are non-renewable fuels. The increasing use of fossil fuels causes fossil fuel reserves to dwindle, there is a need for alternative fuels. the use of alternative fuels is the right solution, alternative fuels that have been developed include bioethanol. The research method used in this study used pure pertalite data as a comparison, then continued with a mixture of bioethanol and pertalite with a variety of bioethanol and pertalite mixtures used were 10ml bioethanol 90ml pertalite, 20ml bioethanol 80ml pertalite, and 30ml bioethanol 70ml pertalite. variations of engine speed used 1000, 2000, and 3000 RPM. Then the fuel consumption data analysis was carried out on the engine. The results of the research conducted will get results for RPM 1000 with 10 ml bioethanol content, there will be less fuel consumption than pure pertalite as well as 20 ml. In the 3000 RPM Round with 10 ml bioethanol content, the fuel consumption is more efficient than pure pertalite, the same thing with bioethanol with 20 ml levels, the fuel consumption is less than pertalite.

scholarly journals Utilization of Gasoline Fuel as an Alternative Fuel for LPG Substitution

2021 ◽  
Vol 3 (2) ◽  
pp. 138-142
Author(s):  
Asril Mallombasang ◽  
Zuryati Djafar ◽  
Wahyu Haryadi Piarah
Keyword(s):  
Fuel Consumption ◽  
Research Method ◽  
Alternative Fuel ◽  
Fuel Oil ◽  
Fire Temperature ◽  
The Cost

The subsidized gasoline conversion to LPG 3 kg in 2006 became the Indonesian Government’s policy to reduce reliance on fuel oil. The increasing LPG consumption and obstacle distribution have been the scarcity of the LPG in all regions of Indonesia. The gasoline fueled stove has overcome from the LPG scarcity.  The purpose of this research was to compare the use of Gasoline types Pertalite and Pertamax with the use of LPG fuel. The research method was carried out by comparing the three types of fuel in the process of boiling 1 (one) litre of water using a gas stove, with several variations in pressure from 1.5 kPa to 2.5 kPa. The results showed that the highest fire temperature for Pertalite was 430 °C fuel, Pertamax 530 °C fuel and LPG 578 °C fuel. Fuel consumption for Pertalite 0,025 kg, Pertamax 0,027 kg and LPG 0,061 kg. The boiling time is 682 s for Pertalite, 669 s Pertamax and 503 s for LPG. The least compaction efficiency value occurs at 1.5 kPa pressure, for Pertalite 6,136 %, Pertamax 7,730 % and LPG 9,018 %. The higher the pressure, the greater the maturity efficiency, instead the fuel consumption and water boiling time are reduced. The cost used to boil water at Pertalite is Rp. 236,-; Pertamax Rp. 251,- and LPG is Rp. 309,-.

Pengaruh Penggunaan Media Belajar dan Minat Belajar terhadap Hasil Belajar Matematika (Eksperimen pada Siswa Kelas XI IPA SMA Negeri 8 Kota Tangerang Selatan Tahun Pelajaran 2010 / 2011)

2011 ◽  
Vol 1 (1) ◽  
Author(s):  
Tatan Zenal Mutakin ◽  
Teti Sumiati
Keyword(s):  
Factor Analysis ◽  
Experimental Method ◽  
Learning Outcomes ◽  
Research Method ◽  
Media Use ◽  
Mathematics Learning ◽  
Mathematics Students ◽  
Learning Mathematics

<p>The research is an experiment conducted in SMA Negeri 8 Tangerang City, Banten, on the influence of learning and use of media interest in learning of mathematics learning outcomes. The purpose of this study was to analyze the <br />influence of media use to learn and interest in learning mathematics learning <br />outcomes. (Experiment In Student Class XI IPA SMAN 8 Tangerang City Year <br />Lesson 2010/2011). The research method used is an experimental method using <br />the technique "factor analysis" with "Two Way Anova", aided by SPSS version <br />15.0. The results of the analysis studies suggest that: 1) There is the media's <br />influence on the learning outcomes of mathematics learning, 2) There is interest <br />in studying the influence on the results of studying mathematics, and 3) There is no interaction between the learning outcomes of students with interest in learning mathematics students. </p>

Monthly, global emissions of carbon dioxide from fossil fuel consumption

Tellus B ◽  
2011 ◽  
Vol 63 (3) ◽  
Author(s):  
R. J. Andres ◽  
J. S. Gregg ◽  
L. Losey ◽  
G. Marland ◽  
T. A. Boden
Keyword(s):  
Carbon Dioxide ◽  
Fuel Consumption ◽  
Fossil Fuel ◽  
Fossil Fuel Consumption ◽  
Global Emissions

scholarly journals Using Quantile Regression to Analyze the Relationship between Socioeconomic Indicators and Carbon Dioxide Emissions in G20 Countries

2021 ◽  
Vol 13 (13) ◽  
pp. 7011
Author(s):  
Abdulaziz A. Alotaibi ◽  
Naif Alajlan
Keyword(s):  
Carbon Dioxide ◽  
Quantile Regression ◽  
Fuel Consumption ◽  
Co2 Emissions ◽  
Fossil Fuel ◽  
Trade Openness ◽  
Policy Coordination ◽  
Socioeconomic Indicators ◽  
Control Variables ◽  
Fossil Fuel Consumption

Numerous studies addressed the impacts of social development and economic growth on the environment. This paper presents a study about the inclusive impact of social and economic factors on the environment by analyzing the association between carbon dioxide (CO2) emissions and two socioeconomic indicators, namely, Human Development Index (HDI) and Legatum Prosperity Index (LPI), under the Environmental Kuznets Curve (EKC) framework. To this end, we developed a two-stage methodology. At first, a multivariate model was constructed that accurately explains CO2 emissions by selecting the appropriate set of control variables based on model quality statistics. The control variables include GDP per capita, urbanization, fossil fuel consumption, and trade openness. Then, quantile regression was used to empirically analyze the inclusive relationship between CO2 emissions and the socioeconomic indicators, which revealed many interesting results. First, decreasing CO2 emissions was coupled with inclusive socioeconomic development. Both LPI and HDI had a negative marginal relationship with CO2 emissions at quantiles from 0.2 to 1. Second, the EKC hypothesis was valid for G20 countries during the study period with an inflection point around quantile 0.15. Third, the fossil fuel consumption had a significant positive relation with CO2 emissions, whereas urbanization and trade openness had a negative relation during the study period. Finally, this study empirically indicates that effective policies and policy coordination on broad social, living, and economic dimensions can lead to reductions in CO2 emissions while preserving inclusive growth.

scholarly journals TEG Design for Waste Heat Recovery at an Aviation Jet Engine Nozzle

2018 ◽  
Vol 8 (12) ◽  
pp. 2637 ◽  
Author(s):  
Pawel Ziolkowski ◽  
Knud Zabrocki ◽  
Eckhard Müller
Keyword(s):  
Fuel Consumption ◽  
Power Output ◽  
Waste Heat ◽  
Positive Impact ◽  
Element Model ◽  
System Level ◽  
Specific Power ◽  
Transfer Coefficients ◽  
Te Modules ◽  
Te Material

Finite element model (FEM)-based simulations are conducted for the application of a thermoelectric generator (TEG) between the hot core stream and the cool bypass flow at the nozzle of an aviation turbofan engine. This work reports the resulting requirements on the TEG design with respect to applied thermoelectric (TE) element lengths and filling factors (F) of the TE modules in order to achieve a positive effect on the specific fuel consumption. Assuming a virtual optimized TE material and varying the convective heat transfer coefficients (HTC) between the nozzle surfaces and the gas flows, this work reports the achievable power output. System-level requirement on the gravimetric power density (>100 Wkg−1) can only be met for F ≤ 21%. When extrapolating TEG coverage to the full nozzle surface, the power output reaches 1.65 kW per engine. The assessment of further potential for power generation is demonstrated by a parametric study on F, convective HTC, and materials performance. This study confirms a feasible design range for TEG installation on the aircraft nozzle with a positive impact on the fuel consumption. This application translates into a reduction of operational costs, allowing for an economically efficient TEG-installation with respect to the cost-specific power output of modern thermoelectric materials.

scholarly journals Cleaning up the air: Effectiveness of air quality policy for SO<sub>2</sub> and NO<sub><i>x</i></sub> emissions in China

2016 ◽  
Author(s):  
Ronald J. van der A ◽  
Bas Mijling ◽  
Jieying Ding ◽  
Maria Elissavet Koukouli ◽  
Fei Liu ◽  
...  
Keyword(s):  
Air Quality ◽  
Fuel Consumption ◽  
Fossil Fuel ◽  
Transport Sector ◽  
Nox Emissions ◽  
So2 Emissions ◽  
Provincial Level ◽  
Fossil Fuel Consumption ◽  
Public Data ◽  
Quality Policy

Abstract. Air quality observations by satellite instruments are spatially consistent, and have a regular temporal resolution, which make them very useful in studying long-term trends in atmospheric species. To monitor air quality trends in China for the period 2005–2015 we derive SO2 columns and NOx emissions on a provincial level with an unprecedented accuracy. To put these trends into perspective they are compared with public data on energy consumption and the environmental policies of China. We distinguish the effect of air quality regulations from economic growth by comparing them relatively to fossil fuel consumption. Pollutant levels, per unit of fossil fuel, are used to assess the effectiveness of air quality regulations. We note that the desulphurisation regulations enforced in 2005–2006 only had a significant effect in the years 2008–2009 when a much stricter control of the actual use of the installations began. For national NOx emissions a distinct decreasing trend is only visible since 2012, but the emission peak year differs from province to province. Unlike SO2, emissions of NOx are highly related to traffic. Furthermore, regulations for NOx emissions are partly decided on a provincial level. The last three years show both a reduction in SO2 and NOx emissions per fossil fuel unit, since the authorities have implemented several new environmental regulations. Despite an increasing fossil fuel consumption and a growing transport sector, the effects of air quality policy in China are clearly visible. Without the air quality regulations the concentration of SO2 would be almost 3 times higher and the NO2 concentrations would be at least 30 % higher than they are today in China.

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