Kongsberg Maritime has released an Engine Room Simulator (ERS) model based on a Dual Fuel Diesel Electric (DFDE) Engine Room configuration from an LNG carrier. The simulated ship has two propulsion motors geared together to one fixed pitch propeller. In addition to propulsion control and power.
The objective of this project is to design of gas mixer venturi as per IS4477 and simulation of dual fuel (Diesel-CNG) engine for performances parameters to examine the BSFC using GT-suite. In present work; a 59 kW diesel engine of 18.5 compression ratio has been converted to operate on dual fuel (Diesel-CNG) keeping same compression ratio with improved fuel economy.
Natural gas is an excellent fuel. Its combustion and emission characteristics are superior to any other realistic competing fuel. There are advanced technologies like closed loop lambda control system and lean combustion are incorporated in the engine to achieve the performance targets.
In the initial stage; experimental testing is conducted for base diesel engine on engine dynamo for performance parameters. Experimental testing data and design data's of base diesel engine are used as input in GT-Suite to predict the performance of the base diesel engine. Mapping in GT-Suite is calibrated & optimized as per experimental results for getting closest result. Then, Experimental results and simulation results for base diesel engine are compared for performance parameters to validate the base diesel engine model of GT-Power.
In second stage, simulation of Dual fuel (Diesel-CNG) engine is done using GT-Power. Dual fuel simulation results are compared with base diesel engine simulation results, experimental results and targeted values.
Citation: Chougule, V., Chhaganlal Vora, K., Suryavanshi, Y., and gunjegaonkar, D., 'Design and Simulation of 2.5 L Dual Fuel (Diesel-CNG) Engine for Performance Parameters,' SAE Technical Paper 2013-01-2885, 2013, https://doi.org/10.4271/2013-01-2885. Download Citation
Affiliated: VIT University & ARAI Academy, AVTEC Ltd.
Event: 8th SAEINDIA International Mobility Conference & Exposition and Commercial Vehicle Engineering Congress 2013 (SIMCOMVEC)
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2003-03-03
A dual fuel engine simulation model was formulated and the combustion process of a diesel/natural gas dual fuel engine was studied using an updated KIVA-3V Computational Fluid Dynamic (CFD) code. The dual fuel engine ignition and combustion process is complicated since it includes diesel injection, atomization and ignition, superimposed with premixed natural gas combustion. However, understanding of the combustion process is critical for engine performance optimization. Starting from a previously validated Characteristic-Timescale diesel combustion model, a natural gas combustion model was implemented and added to simulate the ignition and combustion process in a dual fuel bus engine. Available engine test data were used for validation of both the diesel-only and the premixed spark-ignition operation regimes. A new formulation of the Characteristic-Timescale combustion model was then introduced to allow smooth transition between the combustion regimes. The models were applied to suggest methods for further engine improvement for better emission performance. The model was extended to consider the direct injection natural gas case by modeling gas jet injection. A comparison of the combustion and emission of the two different gas supply methods was conducted. The research demonstrated that multidimensional modeling is useful for dual fuel engine study and optimization.
Citation: Zhang, Y., Kong, S., and Reitz, R., 'Modeling and Simulation of a Dual Fuel (Diesel/Natural Gas) Engine With Multidimensional CFD,' SAE Technical Paper 2003-01-0755, 2003, https://doi.org/10.4271/2003-01-0755. Download Citation
Author(s): Youtong Zhang, Song-Charng Kong, Rolf D. Reitz
Affiliated: Beijing Institute of Technology, Engine Research Center, University of Wisconsin-Madison
Event: SAE 2003 World Congress & Exhibition
Also in: Ci Engine Combustion Processes & Performance With Alternative Fuels-SP-1737, SAE 2003 Transactions Journal of Fuels and Lubricants-V112-4
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