scholarly journals Study About Nitrogen Oxide Emissions and Fuel Consumption in Diesel Engines Fueled with B20

2018 ◽  
Author(s):  
Luis Manuel Ventura Serrano ◽  
Manuel Gameiro da Silva
Keyword(s):  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Diesel Engines ◽  
Nitrogen Oxide Emissions

scholarly journals Possibilities of Simultaneous In-Cylinder Reduction of Soot andNOxEmissions for Diesel Engines with Direct Injection

2008 ◽  
Vol 2008 ◽  
pp. 1-13 ◽  
Author(s):  
U. Wagner ◽  
P. Eckert ◽  
U. Spicher
Keyword(s):  
Nitrogen Oxide ◽  
Diesel Engines ◽  
Fuel Injection ◽  
Soot Formation ◽  
Soot Oxidation ◽  
The Other ◽  
Injection System ◽  
Nitrogen Oxide Emissions ◽  
Injection Strategy ◽  
Soot Emissions

Up to now, diesel engines with direct fuel injection are the propulsion systems with the highest efficiency for mobile applications. Future targets in reducingCO2-emissions with regard to global warming effects can be met with the help of these engines. A major disadvantage of diesel engines is the high soot and nitrogen oxide emissions which cannot be reduced completely with only engine measures today. The present paper describes two different possibilities for the simultaneous in-cylinder reduction of soot and nitrogen oxide emissions. One possibility is the optimization of the injection process with a new injection strategy the other one is the use of water diesel emulsions with the conventional injection system. The new injection strategy for this experimental part of the study overcomes the problem of increased soot emissions with pilot injection by separating the injections spatially and therefore on the one hand reduces the soot formation during the early stages of the combustion and on the other hand increases the soot oxidation later during the combustion. Another method to reduce the emissions is the introduction of water into the combustion chamber. Emulsions of water and fuel offer the potential to simultaneously reduceNOxand soot emissions while maintaining a high-thermal efficiency. This article presents a theoretical investigation of the use of fuel-water emulsions in DI-Diesel engines. The numerical simulations are carried out with the 3D-CFD code KIVA3V. The use of different water diesel emulsions is investigated and assessed with the numerical model.

Experimental Investigation of Performance and Emission Parameters Changes on Diesel Engines Using Anisole Additive

2014 ◽  
Vol 490-491 ◽  
pp. 987-991
Author(s):  
Mustafa Kaan Baltacioğlu ◽  
Kadi̇r Aydin ◽  
Ergül Yaşar ◽  
Hüseyi̇n Turan Arat ◽  
Çağlar Conker ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Specific Fuel Consumption ◽  
Compression Ignition Engine ◽  
Gas Emissions ◽  
Performance And Emission

In this study, effect of anisole additive into the diesel fuel on performance and emission parameters of diesel engines was investigated. Instead of structural changes which are more difficult and expensive, development of fuel technologies is preferred to provide reduction on exhaust gas emissions which are harmful to environment and human health. Therefore, in this experimental study, anisole was used as additive into diesel fuel with the volumetric ratio of 1,5%, 3% and 5%. The performance characteristics and exhaust emissions of a four cylinder, four stroke, naturally aspirated, water cooled, direct injection compression ignition engine fueled with modified fuels were analyzed. Engine was subjected constant speed, full load conditions during tests. Engine power, torque, specific fuel consumption, carbon monoxide, nitrogen oxide and carbon dioxide emissions were measured and results were evaluated. Changes in performance parameters were negligible for all ratios of modified fuels except specific fuel consumption. Finally, while carbon monoxide gas emissions were increased with anisole additive, carbon dioxide and nitrogen oxide gas emissions were decreased.

scholarly journals Seeing Reduced Diesel Emissions

1998 ◽  
Vol 120 (01) ◽  
pp. 62-63
Author(s):  
Zhiyu Han ◽  
Rolf D. Reitz
Keyword(s):  
Nitrogen Oxide ◽  
Diesel Engines ◽  
Three Dimensional ◽  
Computer Models ◽  
Diesel Emissions ◽  
Nitrogen Oxide Emissions ◽  
Know How ◽  
Engine Design ◽  
Polluting Emissions ◽  
The University

This article highlights animated three-dimensional computer models that show how to control the biggest pollutants coming from diesel engines. Increasingly strict regulations have led engineers to search for new ways of controlling the polluting emissions from diesel engines without compromising fuel economy. The past experiments tended to yield the same disappointing results-nitrogen oxide emissions increased if soot emissions were reduced and vice versa. Using animated three-dimensional computer models, researchers at the University of Wisconsin's Engine Research Center (ERC) in Madison found that multiple high-pressure injections enabled soot and nitrogen oxide emissions to be reduced at the same time. The discovery of the new multiple-injection method is significant for diesel-engine design. The combustion models developed at the ERC are now being used at major engine and automotive companies. Because engineers now know how to reduce nitrogen oxide and soot simultaneously, they can apply this mechanism to improve injection-scheme designs.

scholarly journals Optimisation of the vehicle transmission and the gear-shifting strategy for the minimum fuel consumption and the minimum nitrogen oxide emissions

2017 ◽  
Vol 231 (7) ◽  
pp. 883-899 ◽  
Author(s):  
Callum J Oglieve ◽  
Mahdi Mohammadpour ◽  
Homer Rahnejat
Keyword(s):  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Fuel Efficiency ◽  
Specific Fuel Consumption ◽  
Brake Specific Fuel Consumption ◽  
Objective Functions ◽  
Computationally Efficient ◽  
Nitrogen Oxide Emissions ◽  
Case Scenario ◽  
Shifting Strategy

The paper outlines a computationally efficient analytical method for evaluating the fuel consumption and the nitrogen oxide emissions during manoeuvres pertaining to the New European Driving Cycle. An integrated optimisation procedure is also included in the analyses with minimisation of the brake specific fuel consumption and minimisation of the nitrogen oxide emissions as objective functions. A set of optimum gear ratios are determined for a four-speed transmission, a five-speed transmission and six-speed transmission as the governing parameters in the optimisation process. The analysis highlights the determination of gear-shifting objective-driven strategies based on the minimisation of either of the declared objective functions. A reduction of 7.5% in the brake specific fuel consumption and a reduction of 6.75% in nitrogen oxide emissions are attainable in the best-case scenario for a six-speed transmission and a gear-shifting strategy based on the lowest brake specific fuel consumption for the case of an engine. The novel integrated analytical simulations and multi-objective optimisation have not been hitherto reported in literature. It provides the opportunity for an objective intelligent-based approach to the use of gear shift indicator technology. The results of this study also show that transmission optimisation can act as an effective and inexpensive mean to enhance the fuel efficiency and to reduce the emissions.

Variable smoothing of optimal diesel engine calibration for improved performance and drivability during transient operation

2020 ◽  
pp. 146808742091880
Author(s):  
Varun Pandey ◽  
Stijn van Dooren ◽  
Johannes Ritzmann ◽  
Benjamín Pla ◽  
Christopher Onder
Keyword(s):  
Diesel Engine ◽  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Engine Performance ◽  
Pollutant Emissions ◽  
Tuning Parameter ◽  
Time Varying ◽  
Nitrogen Oxide Emissions ◽  
Trade Off ◽  
Optimal Calibration

The model-based method to define the optimal calibration maps for important diesel engine parameters may involve three major steps. First, the engine speed and load domain – in which the engine is operated – are identified. Then, a global engine model is created, which can be used for offline simulations to estimate engine performance. Finally, optimal calibration maps are obtained by formulating and solving an optimisation problem, with the goal of minimising fuel consumption while meeting constraints on pollutant emissions. This last step in the calibration process usually involves smoothing of the maps in order to improve drivability. This article presents a method to trade off map smoothness, brake-specific fuel consumption and nitrogen oxide emissions. After calculating the optimal but potentially non-smooth calibration maps, a variation-based smoothing method is employed to obtain different levels of smoothness by adapting a single tuning parameter. The method was experimentally validated on a heavy-duty diesel engine, and the non-road transient cycle was used as a case study. The error between the reference and actual engine torque was used as a metric for drivability, and the error was found to decrease with increasing map smoothness. After having obtained this trade-off for various fixed levels of smoothness, a time-varying smoothness calibration was generated and tested. Experimental results showed that, with a time-varying smoothness strategy, nitrogen oxide emissions could be reduced by 4%, while achieving the same drivability and fuel consumption as in the case of a fixed smoothing strategy.

Perovskite-based catalysts for the control of nitrogen oxide emissions from diesel engines

2019 ◽  
Vol 9 (9) ◽  
pp. 2057-2077 ◽  
Author(s):  
Magdalena Jabłońska ◽  
Regina Palkovits
Keyword(s):  
Nitrogen Oxides ◽  
Nitrogen Oxide ◽  
Diesel Engines ◽  
Nitrogen Oxide Emissions ◽  
Wide Range

Nitrogen oxides removal over a wide range of perovskite-based catalysts together with their property-activity relationships.

scholarly journals ANALISIS PENGARUH PEMBEBANAN ENGINE TERHADAP EMISI GAS BUANG DAN FUEL CONSUMPTION MENGGUNAKAN BAHAN BAKAR SOLAR DAN BIODIESEL B10 PADA ENGINE CUMMINS QSK 45 C

POROS ◽  
2018 ◽  
Vol 15 (2) ◽  
pp. 136
Author(s):  
Puji Saksono ◽  
Pandu Prastiyo Utomo
Keyword(s):  
Carbon Monoxide ◽  
Environmental Pollution ◽  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
The Other ◽  
Alternative Solution ◽  
Test Equipment ◽  
Heavy Equipment

Abstract: The fuels for Diesel engines derived from petroleum of its existence the longer depleting. Starting from this, the use of biodiesel as a successor is an alternative solution. Conversion of diesel fuel for Diesel engines of heavy equipment to the other types, one of them should pay attention to emissions- related environmental pollution and fuel consumption. This research was conducted with the aim to find out the influence of loading engine against exhaust emissions and fuel consumption using diesel fuel and biodiesel B10 on engine Cummins QSK 45 c. Testing performed in the PT. Saptaindra Sejati workshop (SIS) MIA 3, km. 84, Adaro, Tanjung Tabalong, South Kalimantan, while the primary uses test equipment namely dynamometer (dynotest) Taylor DS4010. The results of testing using biodiesel in diesel fuel compared with B10 imposition engine 0 - 100% decline in average levels of nitrogen oxide (NOx) of 88% (g/kW-hr); carbon monoxide (CO) of 88% (g/kW-hr); and hydrocarbons (HC) by 80% (g/kW-hr), while the fuel consumption experienced a decrease in 0 - 7.14%. 

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