The Impact of the Bioethanol Fuel on the Exhaust Gas Emission of a Two-Stroke Engine

2020 ◽  
pp. 185-192
Author(s):  
Keio Küüt ◽  
Risto Ilves ◽  
Arne Küüt ◽  
Jüri Olt
Keyword(s):  
Exhaust Gas ◽  
Gas Emission ◽  
Exhaust Gas Emission ◽  
The Impact ◽  
Bioethanol Fuel ◽  
Stroke Engine

scholarly journals Modification of four-stroke engine for operation in two-stroke cycle for automotive application

2015 ◽  
Vol 162 (3) ◽  
pp. 3-12
Author(s):  
Władyslaw MITIANIEC ◽  
Konrad BUCZEK
Keyword(s):  
Injection System ◽  
Geometrical Parameters ◽  
Total Efficiency ◽  
Exhaust Gas ◽  
Valve Timing ◽  
Gas Emission ◽  
Engine Operation ◽  
Poppet Valve ◽  
Exhaust Gas Emission ◽  
Stroke Engine

The main disadvantages of two-stroke engines such a big fuel consumption and big emission of hydrocarbons or carbon monoxide can be reduced by new proposal of design of two stroke engine based on four stroke engines. The paper describes the operation of high supercharged spark ignition overhead poppet valve two-stroke engine, which enables to achieve higher total efficiency and exhaust gas emission comparable to four-stroke engines. The work of such engines is possible by proper choice of valve timings, geometrical parameters of inlet and outlet ducts and charge pressure. The engine has to be equipped with direct fuel injection system enabling lower emission of pollutants. The work is based on theoretical considerations and engine parameters are determined on the simulation process by use GT-Power program and CFD program for different engine configurations. The initial results included in the paper show influence of valve timing on engine work parameters and predicted exhaust gas emission. The simulation results show that the nitrogen oxides are considerably reduced in comparison to four-stroke engines because of higher internal exhaust gas recirculation. The innovation of this proposal is applying of variable valve timing with turbocharging system in the two-stroke engine and obtaining a significant downsizing effect. The conclusions shows the possibilities of applying two-stroke poppet valve engine as a power unit for transportation means with higher total efficiency than traditional engines with possible change of engine operation in two modes: two- and four stroke cycles. The main disadvantages of two-stroke engines such a big fuel consumption and big emission of hydrocarbons or carbon monoxide can be reduced by new proposal of design of two stroke engine based on four stroke engines. The paper describes the operation of high supercharged spark ignition overhead poppet valve two-stroke engine, which enables to achieve higher total efficiency and exhaust gas emission comparable to four-stroke engines. The work of such engines is possible by proper choice of valve timings, geometrical parameters of inlet and outlet ducts and charge pressure. The engine has to be equipped with direct fuel injection system enabling lower emission of pollutants. The work is based on theoretical considerations and engine parameters are determined on the simulation process by use GT-Power program and CFD program for different engine configurations. The initial results included in the paper show influence of valve timing on engine work parameters and predicted exhaust gas emission. The simulation results show that the nitrogen oxides are considerably reduced in comparison to four-stroke engines because of higher internal exhaust gas recirculation. The innovation of this proposal is applying of variable valve timing with turbocharging system in the two-stroke engine and obtaining a significant downsizing effect. The conclusions shows the possibilities of applying two-stroke poppet valve engine as a power unit for transportation means with higher total efficiency than traditional engines with possible change of engine operation in two modes: two- and four stroke cycles.

scholarly journals Analysis of the Impact of Using Catalytic Additives to Fuel on Exhaust Emissions from a Diesel Engine

2020 ◽  
Author(s):  
Marcin Tkaczyk ◽  
Konrad Krakowian ◽  
Radosław Włostowski ◽  
Zbigniew Sroka
Keyword(s):  
Diesel Engine ◽  
High Efficiency ◽  
Field Tests ◽  
Calorific Value ◽  
Solid Particles ◽  
Exhaust Gas ◽  
Gas Emission ◽  
Exhaust Gas Emission ◽  
The Impact ◽  
Catalytic Additives

The results from laboratory tests and field tests, available in the open literature for over ten years, despite the announcement of high efficiency translating into increased energy efficiency and such significant ecological advantages, have not so far resulted in widespread use of fuel performance catalysts (FPC) on a global scale. Wishing to explain why the above situation occurred and to verify the operation of catalytic additives for fuels; this article presents the results of research on the effect of using catalytic additives for fuel in a brand new diesel engine. The article contains an analysis of the results of exhaust gas emission tests from the Doosan MD196TI engine. During the tests, the engine was fueled with a typical diesel fuel and the same fuel with the a catalyst additive. The catalyst was added to the liquid fuel in the form of a commercially available product distributed by ProOne company under the name FMAX. The research was carried out in the form of a test, much more developed than the approval test on a stationary braking station in accordance with the requirements of ISO 8178. The article is concluded with a comparative analysis of exhaust gas emission results illustrating the effects of a catalyst in the form of reduction of solid particles, carbon monoxide, hydrocarbons and a slight increase in nitrogen oxide emissions. In addition, the effect of the catalyst depends on the product of thermal (brake) efficiency of the engine and the calorific value (CV) of the fuel used.

scholarly journals The Effect of Trim on Tanker, Container and Bulk Carrier Ship Toward the Reduction of Ship’s Exhaust Gas Emission

Kapal ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 58-68
Author(s):  
Robin Undap ◽  
Arif Fadillah
Keyword(s):  
Fuel Consumption ◽  
Calculation Method ◽  
Environmental Problems ◽  
Exhaust Gas ◽  
Reduce Fuel Consumption ◽  
Bulk Carrier ◽  
Gas Emission ◽  
Average Decrease ◽  
Exhaust Gas Emission ◽  
The Impact

Emission is one of the few environmental problems, and ships are one of the modes of transportation that produce it. This study aims to define the impact of using optimal trim during the cruising phase, so it can decrease the resistance and the fuel consumption, which will lead to less emission produced by the ship. The type and amount of ships used in this study are three tanker ships, three container ships, and two bulk carrier ships. The methodology used in this study is by using Holtrop’s resistance calculation method with the help of Maxsurf software. The resistance, the power needed, and the fuel consumption is calculated on 22 trim variations and seven speed variations. This study determined that the average decrease in fuel consumption caused by trim optimization for tanker, container, and bulk carrier ships is 5.641%, 8.269%, and 15.704%. Furthermore, the average decrease of emissions produced by tanker, container, and bulk carrier is 6.494%, 11.317%, and 13.775%, respectively. These results are narrowed down to conclude that trim optimization can reduce fuel consumption by up to 9.871% and decrease the emission produced by up to 10.529% for the three types of ships used in this study.

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