Influence of advanced injection timing on the performance and emissions of CI engine fueled with ethanol-blended diesel fuel

2008 ◽  
Vol 32 (11) ◽  
pp. 1006-1015 ◽  
Author(s):  
Cenk Sayin ◽  
Kadir Uslu
Keyword(s):  
Diesel Fuel ◽  
Injection Timing ◽  
Performance And Emissions ◽  
Ci Engine

Experimental investigation of ethanol blended diesel fuel in single cylinder CI engine

2021 ◽  
Author(s):  
K. Prasath ◽  
S. Manivannan ◽  
S. Marimuthu ◽  
C. Ramesh Kannan ◽  
A. Daniel Das
Keyword(s):  
Experimental Investigation ◽  
Diesel Fuel ◽  
Single Cylinder ◽  
Ci Engine

Effect of injection timing on combustion, performance and emission characteristics of CI engine fuelled with quaternary blends

2020 ◽  
Author(s):  
Anish Mariadhas ◽  
Jayaprabakar Jayaraman ◽  
Nivin Joy ◽  
P. Saikamal ◽  
P. V. S. Yaswanth ◽  
...  
Keyword(s):  
Injection Timing ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Combustion Performance ◽  
Ci Engine

Optimization of Mixture Formation of Diesel Fuel in a Small CI Engine: The Effect of Water (H2O) Injection Into Intake Port

2017 ◽  
Author(s):  
Se Hun Min ◽  
Jeonghyun Park ◽  
Hyun Kyu Suh
Keyword(s):  
Water Injection ◽  
Injection Timing ◽  
Intake Port ◽  
Cylinder Pressure ◽  
Test Results ◽  
Analysis Model ◽  
Simultaneous Reduction ◽  
Effect Of Water ◽  
Rate Of Heat Release ◽  
Ci Engine

The objective of this study is to investigate the effect of water injection into intake port on the performance of small CI engine. The ECFM-3Z model was applied for the combustion analysis model, and the amount of injected water were varied 10%, 20% and 30% of injected fuel mass. The results of this work were compared in terms of cylinder pressure, rate of heat release (ROHR), and the ISNO and soot emissions. It was found that the cylinder pressure was decreased from 1.2% to 9.2% when the amount of injected water was increased from 10% to 30%. In the results, NO emission significantly decreased from about 24% to about 85% when the amount of injected water increased due to the specific heat and latent heat of water. Considering the test results, the best conditions for the simultaneous reduction of NO and soot is the BTDC 05deg of injection timing and 30% of water injection mass. It can be expected the best IMEP and ISFC characteristics.

A phenomenological combustion analysis of a dual-fuel natural-gas diesel engine

2016 ◽  
Vol 231 (1) ◽  
pp. 66-83 ◽  
Author(s):  
Shuonan Xu ◽  
David Anderson ◽  
Mark Hoffman ◽  
Robert Prucka ◽  
Zoran Filipi
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Heat Release ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Dual Fuel ◽  
Injection Timing ◽  
Heavy Duty ◽  
Engine System ◽  
Wiebe Function

Energy security concerns and an abundant supply of natural gas in the USA provide the impetus for engine designers to consider alternative gaseous fuels in the existing engines. The dual-fuel natural-gas diesel engine concept is attractive because of the minimal design changes, the ability to preserve a high compression ratio of the baseline diesel, and the lack of range anxiety. However, the increased complexity of a dual-fuel engine poses challenges, including the knock limit at a high load, the combustion instability at a low load, and the transient response of an engine with directly injected diesel fuel and port fuel injection of compressed natural gas upstream of the intake manifold. Predictive simulations of the complete engine system are an invaluable tool for investigations of these conditions and development of dual-fuel control strategies. This paper presents the development of a phenomenological combustion model of a heavy-duty dual-fuel engine, aided by insights from experimental data. Heat release analysis is carried out first, using the cylinder pressure data acquired with both diesel-only and dual-fuel (diesel and natural gas) combustion over a wide operating range. A diesel injection timing correlation based on the injector solenoid valve pulse widths is developed, enabling the diesel fuel start of injection to be detected without extra sensors on the fuel injection cam. The experimental heat release trends are obtained with a hybrid triple-Wiebe function for both diesel-only operation and dual-fuel operation. The ignition delay period of dual-fuel operation is examined and estimated with a predictive correlation using the concept of a pseudo-diesel equivalence ratio. A four-stage combustion mechanism is discussed, and it is shown that a triple-Wiebe function has the ability to represent all stages of dual-fuel combustion. This creates a critical building block for modeling a heavy-duty dual-fuel turbocharged engine system.

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