New Combustion System with Centered-Prechamber for Low-NOx Diesel Engine. 3rd Report. Application of Stratified Fuel-Water Injection System.

In this work, based on the concept of spray-orientation and space-atomization, a new double-layers diffluent combustion system for diesel engine is proposed which has a collision table with circular oriented-surface. Experiments are carried out on a 135 single-cylinder diesel engine by utilization of the new combustion system which is equipped with a high-pressure common-rail fuel injection system. The optimized rail pressure and fuel injection advanced angle are selected for diesel engine at different work conditions. Comparing with the data of original combustion system, the decrease of the brake specific fuel consumption and soot emission is 3.10% and 31.8% respectively while the NOX emission increased by 8.49% at rated work condition for this new combustion system. These results indicate that the new double-layers diffluent combustion system can preferably optimize the performance of diesel engine.

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Experimental investigation of diesel engine with water injection system on emission parameters

IOSR Journal of Mechanical and Civil Engineering ◽

10.9790/1684-11284751 ◽

2014 ◽

Vol 11 (2) ◽

pp. 47-51 ◽

Cited By ~ 1

Author(s):

Sagar Patel ◽

◽

Gaurav P Rathod ◽

Tushar M Patel

Keyword(s):

Experimental Investigation ◽

Diesel Engine ◽

Water Injection ◽

Injection System

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Study of the Combustion System of a New Small DI Diesel Engine with Advanced Common Rail Injection System

10.4271/2003-01-1782 ◽

2003 ◽

Cited By ~ 5

Author(s):

Felice E. Corcione ◽

Bianca M. Vaglieco ◽

Giuseppe E. Corcione ◽

M. Lavorgna ◽

Rosario Lanzafame

Keyword(s):

Diesel Engine ◽

Common Rail ◽

Injection System ◽

Combustion System ◽

Common Rail Injection System ◽

Common Rail Injection ◽

Di Diesel Engine

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9539248 Reduction of exhaust emission with new water injection system in a diesel engine Susumu Kouketsu, Kazutoshi Mori, Kenji Sakai (Mitsubishi Motors Corporation), Hiroshi Nakagawa (Mitsubishi Heavy Industries, Ltd.)

JSAE Review ◽

10.1016/0389-4304(96)90037-5 ◽

1996 ◽

Vol 17 (1) ◽

pp. 87

Keyword(s):

Diesel Engine ◽

Water Injection ◽

Injection System ◽

Exhaust Emission

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Mathematical Model of Thermodynamic Processes in the Intake Manifold of a Diesel Engine with Fuel and Water Injection

Energies ◽

10.3390/en13174315 ◽

2020 ◽

Vol 13 (17) ◽

pp. 4315

Author(s):

Vladimir Bondar ◽

Sergei Aliukov ◽

Andrey Malozemov ◽

Arkaprava Das

Keyword(s):

Mathematical Model ◽

Diesel Engine ◽

Rational Design ◽

Water Injection ◽

Injection System ◽

Intake Manifold ◽

Design Parameters ◽

Working Fluid ◽

The Mathematical Model ◽

Thermodynamic Processes

The article presents the results of a study aimed at creating a mathematical model of thermodynamic processes in the intake manifold of a forced diesel engine, taking into account the features of simultaneous injection of fuel and water into the collector. In the course of the study, the tasks of developing a mathematical model were solved, it was implemented in the existing software for component simulation “Internal combustion engine research and development” (ICE RnD), created using the Modelica language, and verification was undertaken using the results of bench tests of diesel engines with injection fuel and water into the intake manifold. The mathematical model is based on a system of equations for the energy and mass balances of gases and includes detailed mathematical submodels of the processes of simultaneous evaporation of fuel and water in the intake manifold; it takes into account the effect of the evaporation of fuel and water on the parameters of the gas state in the intake manifold; it takes into account the influence of the state parameters of the working fluid in the intake manifold on the physical characteristics of fuel and water; it meets the principles of component modeling, since it does not contain parameters that are not related to the simulated component; it describes the process of simultaneous transfer of vapors and non-evaporated liquids between components; and it does not include empirical relationships requiring data on the dynamics of fuel evaporation under reference conditions. According to the results of a full-scale experiment, the adequacy of the mathematical model developed was confirmed. This model can be used to determine the rational design parameters of the fuel and water injection system, the adjusting parameters of the forced diesel engine that provide the required power, and economic indicators, taking into account the limitations on the magnitude of the mechanical and thermal loads of its parts.

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Reduction of Exhaust Emission with New Water Injection System in a Diesel Engine

10.4271/960033 ◽

1996 ◽

Cited By ~ 20

Author(s):

Susumu Kohketsu ◽

Kazutoshi Mori ◽

Kenji Sakai ◽

Hiroshi Nakagawa

Keyword(s):

Diesel Engine ◽

Water Injection ◽

Injection System ◽

Exhaust Emission

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Investigation on the Match between the Nozzle Tip Penetration and the Double-Layers Diffluent Combustion Chamber Geometry

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.1738 ◽

2013 ◽

Vol 860-863 ◽

pp. 1738-1743

Author(s):

Kun Peng Qi ◽

Ming Hai Li ◽

Wu Qiang Long

Keyword(s):

Diesel Engine ◽

Combustion Chamber ◽

Fuel Injection ◽

Combustion Process ◽

Fuel Mixture ◽

Injection System ◽

Double Layers ◽

Cylinder Pressure ◽

Combustion System ◽

Ratio Distribution

In order to investigate the match between the nozzle tip penetration and the double-layers diffluent combustion chamber geometry, a simulation model was developed which was based on the 135 diesel engine to simulate the equivalence ratio distribution of air-fuel mixture and the temperature distribution during combustion process. At the same time, an experiment was executed by a 135 diesel engine equipped with the high-pressure common rail fuel injection system. The research results show that the air-fuel mixture becomes more uniformed and the combustion process is improved when the nozzle tip penetration is reasonable selected which lead to higher in-cylinder pressure and better brake specific fuel consumption while NOXemission is increased and soot emission is decreased for the double-layers diffluent combustion system.

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NOx Reduction of a Medium Speed Diesel Engine Using a Charge Air Moisturizer System

ASME 2006 Internal Combustion Engine Division Fall Technical Conference (ICEF2006) ◽

10.1115/icef2006-1548 ◽

2006 ◽

Cited By ~ 3

Author(s):

Hyoung-Keun Park ◽

Sang-Hak Ghal ◽

Byong-Seok Kim ◽

Ki-Doo Kim ◽

Jong-Suk Kim

Keyword(s):

Diesel Engine ◽

Combustion Chamber ◽

Nox Reduction ◽

Water Injection ◽

Combustion Process ◽

Hot Water ◽

Nox Emission ◽

Injection System ◽

Medium Speed ◽

A Charge

It is well known that water can be used to prevent NOx formation during a combustion process. It is based on the principle by decreasing flame temperature with increasing the specific heat capacity of combustion air by adding water to a combustion chamber. Introducing water into a charge air enables much more water addition into a combustion chamber than other methods, which can reduce NOx emission to lower level than the others. The method has also the advantage of low installation cost. In a general water injection system for a charge air only hot water is sprayed into the charge air and vaporized, but more effective means to introduce water into the charge air is needed because only small amount of water is evaporated in hot water injection system. In this study, steam and hot moisturizing water are injected simultaneously. The steam supplies steady additional energy for evaporation of the water and can be vapor by itself. The new method was evaluated for NOx reduction performance on a medium speed diesel engine. NOx emission was reduced to 10∼38% on the 27∼59gram water per kilogram dry air.

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