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The Optimum of Heat Release Patterns in High Speed D.I. Diesel Engine
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English
Abstract
The heat release rate patterns of fuel combustion determines the changing of pressure and temperature of gases within cylinder, and furthermore made an important effect of the fuel economy, power - output, noise level and exhaust emission. In this paper, the authors discuss the fuel economy, power - output and combustion noise of R4102Q D.I. diesel engine.
In optimum simulation concerning fuel economy and power-output, the indicative heat efficiency and mean indicative pressure were almost always taken as objective function. In consideration of the effect of gas pressure upon the friction losses of diesel engine, the effetive heat efficiency and mean effective pressure were taken as objective function in this paper. By comparison with testing data, when the instantaneous friction was taken into consideration, the prediction accuracy of simulations was improved.
The gas pressure vibration causes by compression and combustion transferred through structure parts and radiated from engine surface. When the transfer coefficient unchanged, by reducing the cylinder pressure level, the combustion noise level will be decreased. In this paper, the authors analyse the effect of heat release rate patterns upon the max combustion pressure, max pressure rising rate, cylinder pressure level and combustion noise level.
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Huang, Y., Zhang, L., and Liu, W., "The Optimum of Heat Release Patterns in High Speed D.I. Diesel Engine," SAE Technical Paper 941694, 1994, https://doi.org/10.4271/941694.Also In
Diesel Engines: Fuel Injection, Combustion, Emissions, and Exhaust Aftertreatment
Number: SP-1050; Published: 1994-09-01
Number: SP-1050; Published: 1994-09-01
References
- Huang Yiliang et. al. “A Study of Shallow W -- Type Combustion System for High -- Speed Diesel Engine” SAE Paper 910485
- Rezeka Sohair F. et. al “A New Approach to Evaluate Instantaneous Friction and Its Components in Internal Combustion Engines” SAE Paper 840179
- Miyamoto Noborn et. al. “Description and Analysis of Diesel Engine Rate of Combustion and Performance Using Wiebe's Functions” SAE paper 850167
- Russell M. F. et. al. “Combustion Noise from High Speed Direct Injection Diesel Engine SAE Trans. 850973
- Zhang Limei et al. “On Combustion Noise and Working Stabitility of the 6130Q Diesel Engine”