Analysis and Research of the Combustion Process of YN4100QB Diesel Engine

2013 ◽  
Vol 744 ◽  
pp. 35-39
Author(s):  
Lei Ming Shi ◽  
Guang Hui Jia ◽  
Zhi Fei Zhang ◽  
Zhong Ming Xu
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Optimization Design ◽  
Combustion Engine ◽  
Geometric Model ◽  
Combustion Process ◽  
Internal Combustion ◽  
Engine Combustion ◽  
Exhaust Noise

In order to obtain the foundation to the research on the Diesel Engine YN4100QB combustion process, exhaust, the optimal design of combustion chamber and the useful information for the design of exhaust muffler, the geometric model and mesh model of a type internal combustion engine are constructed by using FIRE software to analyze the working process of internal combustion engine. Exhaust noise is the main component of automobile noise in the study of controlling vehicle noise. It is primary to design a type of muffler which is good for agricultural automobile engine matching and noise reduction effect. The present car mufflers are all development means. So it is bound to cause the long cycle of product development and waste of resources. Even sometimes not only can it not reach the purpose of reducing the noise but also it leads to reduce the engine dynamic. The strength of the exhaust noise is closely related to engine combustion temperature and pressure. The calculation and initial parameters are applied to the software based on the combustion model and theory. According to the specific operation process of internal combustion engine. Five kinds of common operation condition was compiled. It is obtained for the detailed distribution parameters of combusted gas temperature pressure . It is also got for flow velocity of the fields in cylinder and given for the relation of the parameters and crankshaft angle for the further research. At the same time NOx emissions situation are got. The numerical results show that not only does it provide the 3D distribution data in different crank shaft angle inside the cylinder in the simulation of combustion process, but also it provides a basis for the engine combustion ,emission research, the optimization design of the combustion chamber and the useful information for the designs of muffler.

Effect of Engine Operating Parameters on Combustion and Emission Characteristics

1992 ◽  
Author(s):  
Jiang Lu ◽  
Ashwani K. Gupta ◽  
Eugene L. Keating
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Pressure Rise ◽  
Internal Combustion ◽  
Operating Parameters ◽  
Emission Characteristics ◽  
Pollutants Emission

Abstract Numerical simulation of flow, combustion, heat release rate and pollutants emission characteristics have been obtained using a single cylinder internal combustion engine operating with propane as the fuel. The data are compared with experimental results and show excellent agreement for peak pressure and the rate of pressure rise as a function of crank angle. The results obtained for NO and CO are also found to be in good agreement and are similar to those reported in the literature for the chosen combustion chamber geometry. The results have shown that both the combustion chamber geometry and engine operating parameters affects the flame growth within the combustion chamber which subsequently affects the pollutants emission levels. The code employed the time marching procedure and solves the governing partial differential equations of multi-component chemically reacting fluid flow by finite difference method. The numerical results provide a cost effective means of developing advanced internal combustion engine chamber geometry design that provides high efficiency and low pollution levels. It is expected that increased computational tools will be used in the future for enhancing our understanding of the detailed combustion process in internal combustion engines and all other energy conversion systems. Such detailed information is critical for the development of advanced methods for energy conservation and environmental pollution control.

scholarly journals Investigation of the environmental characteristics of a diesel engine when operating on activated fuel

2021 ◽  
Vol 1 (1) ◽  
pp. 54-62
Author(s):  
S.A. Plotnikov ◽  
◽  
A.N. Kartashevich ◽  
M.V. Motovilova ◽  
◽  
...  
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Diesel Fuel ◽  
Laboratory Tests ◽  
Combustion Engine ◽  
Combustion Process ◽  
Internal Combustion ◽  
Fuel Injector ◽  
Exhaust Gases ◽  
Technical Requirements

The internal combustion engine is the most widespread source of energy for vehicles. The main requirements for an internal combustion engine include: the efficiency of functioning as part of a vehicle, high performance indicators, as well as environmental parameters of the emission of exhaust gases into the environment. The fulfillment of these conditions is possible by improving the design of the engine, as well as improving the working process of the diesel engine while increasing the quality of diesel fuel or additional impact directly on the fuel itself. One of the most effective ways to influence diesel fuel is to transfer a certain amount of heat to it in the high-pressure fuel line in front of the injectors. At the same time, the physical and mechanical properties of diesel fuel change, which leads to a change in mixture formation and the combustion process in the engine cylinder. To intensify the combustion process, a method of preliminary high-temperature local heating of diesel fuel in the fuel supply system in front of the injectors was proposed. To achieve this goal, several main directions were identified, including the study of environmen-tal indicators during the intensification of the combustion process. The tests were carried out in stages. At the first stage, the operation of the fuel injector when op-erating on activated fuel (bench, laboratory tests) was investigated. At the next stage, the indicators of the diesel engine in the main modes of its operation were investigated. Bench (laboratory) tests made it possible to draw a conclusion about the operability and compli-ance of the aggregate with the technical requirements of the manufacturer and the parameters of GOST. The bench tests proved the possibility of a diesel engine running on activated fuel without deteriorating environmental performance in the exhaust gases; at the same time, changes in the tox-icity and smoke of the exhaust gases from different values of the average effective pressure were revealed.

Performance Evaluation of a Prototype TurbX™ Engine

2003 ◽  
Author(s):  
Rao V. Arimilli ◽  
Kurt Erickson ◽  
Frederick T. Mottley ◽  
James C. Conklin
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Gas Turbines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Pressure Rise ◽  
Internal Combustion ◽  
Oak Ridge ◽  
Cold Flow ◽  
Experimental Apparatus

A revolutionary new concept internal-combustion engine called TurbX™ was invented and a prototype was built by an independent inventor, M. A. Wilson. Theoretically, the TurbX™ engine cycle can be represented by the Atkinson thermodynamic cycle with a continuous combustion process. Because of these attributes, this concept has the potential for higher fuel economy and power density relative to other internal combustion engine types. To evaluate the performance of this prototype, Oak Ridge National Laboratory and The University of Tennessee conducted an independent experimental study. Two series of tests were performed: cold-flow and fuel-fired tests. Cold-flow, compressed-air driven, tests were performed by pressurizing the combustion chamber with shop air to demonstrate the prototype performance of the turbine section. These results showed positive but unremarkable torque for combustion chamber air pressures above 300 kPa with a functional relationship illustrative of typical gas turbines with respect to shaft speed. The fuel-fired tests consisted of 26 constant-speed runs between 1800 and 9500 RPM. The experimental apparatus limited the maximum test speed to 9500 RPM. The TurbX™ engine produced no net output power for all fuel-fired tests conducted. The temperature measurements indicated that for most of the runs there was sustained combustion. However, even in runs where satisfactory combustion was observed, measured gage pressure inside the combustion chamber never exceeded 15.5 kPa. The lack of sufficient pressure rise inside the combustion chamber is indicative of excessive leakage of the combustion products through the preliminary prototype engine internals. Based on the results and the experience gained through this independent testing of this preliminary prototype, further development of this concept is recommended. Three major issues are specifically identified: 1) the internal components must be redesigned to reduce leakage, 2) combustion chamber design and 3) improve the overall aerodynamic performance of the engine internal components.

Review of Stratified Charge Research in Oxygen-Enriched and Nitrogen-Enriched Combustion

2012 ◽  
Vol 538-541 ◽  
pp. 2457-2460
Author(s):  
De Yuan Su ◽  
Ying Ai Jin ◽  
Qing Gao ◽  
Xian Da Che ◽  
Yun Long Xing
Keyword(s):  
Internal Combustion Engine ◽  
Flame Retardant ◽  
Combustion Temperature ◽  
Combustion Engine ◽  
Combustion Process ◽  
Internal Combustion ◽  
Stratified Charge ◽  
Engine Combustion

This paper discusses combustion and emissions of internal combustion engine when oxygen-enriched combustion air and nitrogen-enriched combustion air are used. Nitrogen-enriched combustion can reduce the formation of NOx by inhibiting the combustion temperature in cylinder. Engine combustion is mainly subject to components of oxygen and nitrogen in the intake, the former combustion and the latter flame retardant. So we can control the two components during combustion process to re-engineering their component in the intake to the implementation control the combustion and emissions.

scholarly journals The Effect of Compression Ratio by Different Piston Head Shape on the Performance of Motorcycle Engine

2019 ◽  
Vol 16 (3) ◽  
pp. 6906-6917
Author(s):  
A. Katijan ◽  
A. H. Kamardin
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Compression Ratio ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Engine Performance ◽  
Internal Combustion ◽  
Head Shape ◽  
Piston Head

The compression ratio has a significant impact on engine power, fuel economy, emission, and other performances of internal combustion engines. Basic engine theory states that a higher compression ratio produces higher torque and horsepower. One way of having different compression ratio is by changing piston head shape. A piston is a cylindrical engine component that slides back and forth in the cylinder bore via forces produced during the combustion process. The piston acts as a movable end of the combustion chamber transmitting power generated from the burning of fuel and air mixture in the combustion chamber. The objective of this study is to compare the engine performance in horsepower and torque produced by the different shapes of the piston head in an internal combustion engine. Three pistons with different head shapes -  standard, mug (low compression) and dome (high compression) with a compression ratio of 8.8:1, 7.61:1 and 10.06:1 were selected for the study. An experiment was also performed to a standard piston installed with 1.5 mm gasket, which has a compression ratio of 7.31. The experiments were carried out using a standard internal combustion engine of a Honda EX5 motorcycle. The engine runs on a chassis dynamometer to measure its torque and horsepower. Piston performance was evaluated based on the maximum available torque and horsepower. The result shows that all three pistons produce different torque and horsepower. The domed piston head produces higher torque and horsepower followed by the standard and mug. By just changing the piston head shape, torque and horsepower increased up to 7.14% and 20.05%  respectively.

Special Combustion Chamber in the Cylinder of Diesel Engine Working Process Simulation Analysis Based on the FIRE Software

2012 ◽  
Vol 562-564 ◽  
pp. 595-598
Author(s):  
Jian Ying Dai ◽  
Xiao Wei Wu ◽  
Chun Yan Shi
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Combustion Process ◽  
Internal Combustion ◽  
Gas Pressure ◽  
Gas Temperature ◽  
Working Process ◽  
Vehicle Noise ◽  
Combustion Theory ◽  
Exhaust Noise

Exhaust noise is the main component of vehicle noise in the study of vehicle noise controlling. It is important to design a type of muffler that can match to engine and have the capability to reduce vehicle noise. At present vehicle mufflers are made by examination, therefore the time of product development is very long and it wastes material. Sometimes exhaust noise can not be reduced; in the contrary it will decrease the power of engine. The content of exhaust noise is tightly related to the temperature, pressure and velocity of combustion gas. In order to obtain the detail data of these parameters, FIRE software is used to perform the calculation of engine combustion process in this paper. FIRE is one of the advanced 3D simulation software packages and can simulate the complicated gas flowing and combustion in internal combustion engine cylinder. Its calculation result accesses to the fact and can attain gas temperature, gas pressure and gas velocity, provide reliable original data for the design of a muffler. In this paper, the basic combustion theory of internal combustion engine is introduced to the basis for the further application of numerical simulation, firstly. The geometrical model and mesh model of a type internal combustion engine are constructed by using FIRE software to analyze the working process of internal combustion engine. Based on the model and combustion theory, the relevant calculation model and initial parameters are chosen and applied into the software. A load case is designed according to the true running process of this engine. With these load cases, the combustion process is simulated in this paper. The detail distribution of the parameters such as combusted gas pressure, combusted gas temperature and velocity of the flow fields in cylinder is obtained and the relation of these parameters and crankshaft angle is given for the further research. It also provides data for muffler design by boundary element method. It is obvious that can shorten the product developing cycle and save the material.

scholarly journals Performance, Combustion and Emission Characteristics of Direct Injection Diesel Engine Fueled With Castor Oil Methyl Esters and Ethanol Blends Equipped With 6 Hole Nozzle

2019 ◽  
Vol 8 (3) ◽  
pp. 5527-5530
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Combustion Chamber ◽  
Castor Oil ◽  
Combustion Engine ◽  
Methyl Esters ◽  
Engine Performance ◽  
Internal Combustion ◽  
Injection Timing ◽  
Ethanol Blends

Depletion of fossil fuel reserves and stringent pollution norms has created a need for search alternate source that can fuel internal combustion engine. The fuels obtained from green matter has got great potential to replace conventional fossil fuels to power internal combustion engine (ICE). But the performance of the ICE are influenced by many parameters such as injector opening pressure, injection timing, and combustion chamber profile. Current work deals with evaluation of engine performance, combustion characteristics of direction injection diesel engine fitted with re-entrant toroidal (RET) combustion chamber equipped with six hole nozzle fueled with castor oil methyl esters (CAOME) and ethanol blends. The peak value of break thermal efficiency (BTE) is found to be 26.34% at 75% load for a blend 80D+5B+15E with minimum emissions and with combustion duration and ignition delay in comparison with diesel

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