scholarly journals The use of adsorbents of lampung natural eolites/coal-fly ash in reducing fuel consumption and exhaust gas emissions of a 4-stroke petrol motorcycle

2018 ◽  
Author(s):  
Herry Wardono ◽  
Simparmin Br Ginting ◽  
Eko Aprilando Sinulingga
Keyword(s):  
Fly Ash ◽  
Fuel Consumption ◽  
Coal Fly Ash ◽  
Exhaust Gas ◽  
Gas Emissions ◽  
Exhaust Gas Emissions

Influence of TiO2 and Bio-Solution Based Additives on Exhaust Emissions of a DI Diesel Engine

2012 ◽  
Vol 602-604 ◽  
pp. 1054-1058
Author(s):  
Karoon Fangsuwannarak ◽  
Kittichai Triratanasirichai
Keyword(s):  
Fuel Consumption ◽  
Direct Injection ◽  
Exhaust Emissions ◽  
Specific Fuel Consumption ◽  
Exhaust Gas ◽  
Gas Emissions ◽  
Fire Point ◽  
Di Diesel Engine ◽  
Nano Titanium Dioxide ◽  
Exhaust Gas Emissions

This study presents the use of bio-solution and nano-Titanium dioxide (TiO2) based additives for dosing in diesel and palm biodiesel (B5). The aim of this work is to enhance the performance of a direct injection (DI) engine and to simultaneously reduce the exhaust gas emissions. The basic properties such as kinematic viscosity, specific gravity, flash point, fire point, and carbon residue of the test fuels were measured and accepted in ASTM standards. Overall, diesel-bio-solution and diesel-TiO2 blends show the lower break specific fuel consumption by 13% and 10%, respectively and the lower exhaust gas emissions, as compared with diesel. B5-bio-solution blend provides the break specific fuel consumption decreased by 1.68%, while exhaust emissions were effectively increased in comparison with B5 fuel.

Gas Turbine Part Load Exhaust Gas Emissions Turndown Envelope Testing Methodology

2009 ◽  
Author(s):  
Kristen LeClair ◽  
Thomas Schmitt ◽  
Garth Frederick
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbines ◽  
Thermodynamic Simulation ◽  
Combined Cycle ◽  
Exhaust Gas ◽  
Ambient Conditions ◽  
Gas Emissions ◽  
Exhaust Gas Emissions

Economic and regulatory requirements have transformed today’s power plant operations. High reserve margins and increased fuel costs have driven combined cycle plants that were once dispatched primarily at base-load to be cycled off during off-peak hours. For many plants, the increased cycling has contributed to shorter maintenance intervals and higher overall operating costs. Technology advancements in combustion system design and in gas turbine control systems has led to extensions in the emissions-compliant operating window of gas turbines, also known as turndown. With extended turndown capability, customers are now able to significantly reduce fuel consumption during minimum load operation at off-peak hours, while simultaneously minimizing the number of shutdowns. Extended turndown reduces operational costs by offsetting the fuel consumption costs against the costs associated with starting up and the maintenance costs associated with such starts. Along with the increased emphasis on turndown capability, there has been a rising need to develop and standardize methods by which turndown capability can be accurately measured and reported. By definition, the limiting factor for turndown is the exhaust gas emissions, primarily CO and NOx. A concurrent and accurate measurement of performance and emissions is an essential ingredient to the determination of turndown capability. Of particular challenge is the method by which turndown results that were measured at one set of ambient conditions can be accurately projected to a specific guarantee condition, or to a range of ambient conditions, for which turndown capabilities have been guaranteed. The turndown projection methodology needs to consider combustion physics, control system algorithms, and basic cycle thermodynamics. Recent advances in the integration of empirically tuned physics-based combustion models with control system models and the gas turbine thermodynamic simulation, has resulted in test procedures for use in the contractual demonstration of turndown capability. A discussion of these methods is presented, along with data showing the extent to which the methods have provided accurate and repeatable test results.

scholarly journals Influence of Innovative Woodchipper Speed Control Systems on Exhaust Gas Emissions and Fuel Consumption in Urban Areas

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3330 ◽  
Author(s):  
Łukasz Warguła ◽  
Mateusz Kukla ◽  
Piotr Lijewski ◽  
Michał Dobrzyński ◽  
Filip Markiewicz
Keyword(s):  
Fuel Consumption ◽  
Urban Areas ◽  
High Speed ◽  
Adaptive System ◽  
Operating Conditions ◽  
Injection System ◽  
Exhaust Gas ◽  
Gas Emissions ◽  
System A ◽  
Exhaust Gas Emissions

This paper discusses the determination of fuel consumption and exhaust gas emissions when shredding branches in urban areas. It aimed to determine the hourly emission of exhaust gases to the atmosphere during such work and to identify the designs that can reduce it. The research was carried out with a cylinder woodchipper driven by a low-power (9.5 kW) combustion engine. There were three configurations of the tested drive unit: The factory setting (A) with a carburettor fuel supply system, modernized by us to include an electronic injection system (B). This system (B) was expanded with an adaptation system patented by the authors (P. 423369), thus creating the third configuration (C). The research was carried out when shredding cherry plum (Prunus cerasifera Ehrh. Beitr. Naturk. 4:17. 1789 (Gartenkalender 4:189-204. 1784)) branches with a diameter of 80 mm, which presented a large load for the machine. The machine was operated by one experienced operator. The average operating conditions during the tests were as follows: Branch delivery frequency of about 4 min−1 and mass flow rate of about 0.72 t h−1. During the tests with the use of PEMS (portable emissions measurement system, here Axion RS from Global MRV), we analyzed the emissions of compounds, such as CO, CO2, HC, and NOx, and determined the fuel consumption based on the carbon balance. The research showed that the use of an injection system (B) reduced fuel consumption from 1.38 to 1.29 l h−1 (by 6.7%) when compared to the carburettor system (A). Modernization of the injection system (B) with an adaptive system (C) reduced fuel consumption from 1.38 to 0.91 l h−1 (by 34%) when compared to the carburettor system (A). An hour of shredding with a cylinder chopper emits the following amounts of flue gases: design A (HC 0.013 kg h−1; CO 0.24 kg h−1; CO2 2.91 kg h−1; NOx 0.0036 kg h−1), design B (HC 0.0061 kg h−1; CO 0.20 kg h−1; CO2 2.77 kg h−1; NOx 0.0038 kg h−1), and design C (HC 0.017 kg h−1; CO 0.22 kg h−1; CO2 1.79 kg h−1; NOx 0.0030 kg h−1). The adaptive system entails significant reductions in non-HC emissions, which indicates that the system needs to be improved with respect to fuel-air mixture control for its enrichment of the low-to-high-speed change. The admissible emission limits for harmful compounds in exhaust gas for the tested group of propulsion units are in accordance with the provisions in force in the European Union from 2019 for the tested propulsion units during operation, with a full CO load about 6100 g h−1 and HC + NOx about 80 g h−1. The tested propulsion units emitted significantly less pollution under real operating conditions (because they did not work under full load throughout the entire test sample).

scholarly journals Effects of Fuel Injection Pressure to Fuel Consumption and Exhaust Gas Emissions of SI Engine

2019 ◽  
Vol 1273 ◽  
pp. 012074
Author(s):  
Joko Sriyanto ◽  
Agus Budiman ◽  
Akmal Irfan Majid ◽  
Luqman Al Huda ◽  
Lilik Chaerul Yuswono ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Fuel Injection ◽  
Injection Pressure ◽  
Exhaust Gas ◽  
Si Engine ◽  
Gas Emissions ◽  
Fuel Injection Pressure ◽  
Exhaust Gas Emissions

scholarly journals Uji Modifikasi Komponen dan Sistem Pengapian Yamaha 5D9 Terhadap Emisi Gas Buang dan Konsumsi Bahan Bakar

2021 ◽  
Vol 2 (1) ◽  
pp. 53-60
Author(s):  
Bahtiar Wilantara ◽  
Parikhin Parikhin ◽  
Hamid Nasrullah ◽  
Suradi Syarif Hidayat ◽  
Wahyu Alif Ramadhan ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Research Method ◽  
Engine Speed ◽  
Exhaust Gas ◽  
Gas Analyzer ◽  
Gas Emissions ◽  
Ignition System ◽  
Piston Valve ◽  
Exhaust Gas Emissions

This study aims to determine the effect of modification of components and ignition system on exhaust emissions and fuel consumption on a Yamaha 5D9 motorcycle. The research method used is a case study. The tool used to perform the emission test is a Gas Analyzer type SUKYOUNG SYGA-401 and fuel consumption is measured using a measuring cup. The results showed 1) exhaust gas emissions on the modification of the components of the piston, valve, and ignition system, namely CO 5.76%, CO2 1.6%, and O2 18.09%. 2) fuel consumption increases at each engine speed of 1000 rpm = 100ml, 2000 rpm = 200ml, and 4000 rpm = 400ml, 3) the distance traveled increases at each engine speed of 1000 rpm = 1.9 km, 2000 rpm = 3, 1 km, and 4000 rpm = 4.6 km. Penelitian ini betujuan untuk mengetahui pengaruh modifikasi komponen dan sistem pengapian terhadap emisi gas buang dan konsumsi bahan bakar pada sepeda motor Yamaha 5D9. Metode penelitian yang digunakan menggunakan case study. Alat yang digunakan untuk melakukan uji emisi adalah Gas Analyzer type SUKYOUNG SYGA-401 dan konsumsi bahan bakar diukur menggunakan gelas ukur. Hasil penelitian menunjukan tiga hal, pertama emisi gas buang pada modifikasi komponen piston, katup, dan sistem pengapian yaitu CO 5,76%, CO2 1,6%, dan O2 18,09%. Kedua, konsumsi bahan bakar meningkat pada setiap putaran mesin 1000 rpm = 100ml, 2000 rpm = 200ml, dan 4000 rpm = 400ml. Dan terakhir, jarak yang ditempuh meningkat pada setiap putaran mesin yaitu 1000 rpm = 1,9 km, 2000 rpm = 3,1 km, dan 4000 rpm =4,6km.

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