Effects of SCR injection system parameters on UWS atomization and mixing characteristics at low exhaust temperature

Sadhana ◽  
2021 ◽  
Vol 46 (4) ◽  
Author(s):  
Hekun Jia ◽  
Zeyuan Zhou ◽  
Bifeng Yin ◽  
Zhiyuan Liu ◽  
Shuai Wen
Keyword(s):  
Injection System ◽  
System Parameters ◽  
Exhaust Temperature ◽  
Mixing Characteristics

COMBUSTION AND EMISSIONS CHARACTERISTICS OF A COMPRESSION IGNITION ENGINE FUELLED WITH N-BUTANOL BLENDS

2015 ◽  
Vol 77 (8) ◽  
Author(s):  
I. M. Yusri ◽  
M. K. Akasyah ◽  
R. Mamat ◽  
O. M. Ali
Keyword(s):  
Diesel Fuel ◽  
Engine Speed ◽  
Energy Content ◽  
Direct Injection ◽  
Cetane Number ◽  
Injection System ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Exhaust Temperature ◽  
Blended Fuels

The use of biomass based renewable fuel, n-butanol blends for compression ignition (CI) engine has attracted wide attention due to its superior properties such as better miscibility, higher energy content, and cetane number as compared to other alternatives fuel. In this present study the use of n-butanol 10% blends (Bu10) with diesel fuel has been tested using multi-cylinder, 4-stroke engine with common rail direct injection system to investigate the combustion and emissions of the blended fuels. Based on the tested engine at BMEP=3.5Bar. Based on the results Bu10 fuel indicates lower first and second peak pressure by 5.4% and 2.4% for engine speed 1000rpm and 4.4% and 2.1% for engine speed 2500rpm compared to diesel fuel respectively. Percentage reduction relative to diesel fuel at engine speeds 1000rpm and 2500rpm for Bu10: Exhaust temperature was 7.5% and 5.2% respectively; Nitrogen oxides (NOx) 73.4% and 11.3% respectively.

Adaption of Injection System Parameters to Homogeneous Diesel Combustion

2004 ◽  
Author(s):  
Ralf Buchwald ◽  
Maximilian Brauer ◽  
André Blechstein ◽  
Ansgar Sommer ◽  
Jörn Kahrstedt
Keyword(s):  
Injection System ◽  
Diesel Combustion ◽  
System Parameters

Effect of Injection System Parameters on Performance and Emission Characteristics of a Small Single Cylinder Diesel Engine

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
D.K. Dond ◽  
N.P. Gulhane
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Common Rail ◽  
Injection System ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
System Parameters ◽  
Main Injection

Limited fossil fuel reservoir capacity and pollution caused by them is the big problem in front of researchers. In the present paper, an attempt was made to find a solution to the same. The conventional fuel injection system was retrofitted with a simple version of the common rail direct injection system for the small diesel engine. Further, the effect of injection system parameters was observed on the performance and emission characteristics of the retrofitted common rail direct injection diesel engine. The parameters such as injection pressure, the start of pilot injection timing, the start of main injection timing and quantity of percentage fuel injection during the pilot and main injection period were considered for experimental investigation. It was observed that all the evaluated parameters were found vital for improving the engine’s performance and emission characteristics. The retrofitted common rail direct injection system shows an average 7% rise in brake thermal efficiency with economic, specific fuel consumption. At the same time, much more reduction in hydrocarbon, carbon monoxide and smoke opacity with a penalty of a slight increase in nitrogen oxides.

Optimization of Injection System Parameters and EGR on Jatropha Biodiesel Engine using Taguchi Approach

2010 ◽  
Vol 1 (1) ◽  
pp. 123 ◽  
Author(s):  
T. Ganapathy ◽  
R. Balasubramanian ◽  
R. P. Gakkhar ◽  
K. Murugesan
Keyword(s):  
Injection System ◽  
Taguchi Approach ◽  
System Parameters

Simulation Study for Mixing Characteristics of NH3 and Automobile Exhaust in the SSCR System

2014 ◽  
Vol 596 ◽  
pp. 755-759
Author(s):  
Da Wei Qu ◽  
Kai Zhang ◽  
Lu Yan Fan ◽  
Hai Bo Gao
Keyword(s):  
Catalytic Reduction ◽  
Influence Factors ◽  
Exhaust System ◽  
Simulation Software ◽  
Gas Mixing ◽  
Axial Distribution ◽  
Automobile Exhaust ◽  
Exhaust Temperature ◽  
Mixing Characteristics ◽  
Nozzle Position

In this paper we talk about the influence factors to the NH3 spray of Solid Selective Catalytic Reduction (SSCR) system by using AVL FIRE 3D commercial simulation software when NH3 and exhaust gas mix in exhaust passage,the influence factors include: engine condition, NH3 temperature ,nozzle installation angle and nozzle position. The conclusions are as follows:engine condition has much Influence for NH3 and automobile exhaust mixing,the mixing is better,the exhaust flow is larger, the exhaust temperature is high;NH3 initial temperature for the gas mixing has little influence;nozzle angle increases is good for the axial distribution of gas and the gas mixing characteristics; For the SSCR system direct injecting NH3 can optimize the nozzle position, and reduce the exhaust system volume.

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