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Intelligent decision support system involves lots of calculations and analysis, and this will affect the operational efficiency of the system. This paper raised that integrate matlab into the IDSS, and let it compute data alone, which will improve the efficiency of the system and so that system designed and implemented will be easier and more convenient to be used. Finally an example is given in combination...
Due to the difficult cold start for LPG engine, most of LPG passenger cars adopt gasoline auxiliary start and automatically switch to LPG after engine warm-up. Therefore, the optimized fuel switch conditions are critical to the development of LPG passenger car meeting with National Emission IV legislation. This paper presents the effects of coolant temperature, engine speed and torque on the switch...
To study the influence of LNG fuel supply system on engine cooling system, ensure that the engine cold start performance, an AMESim based LNG fuel supply system simulation model with the key components of vaporizer was proposed. By analyzing the influence of the coolant temperature and flow rate on the phase transition of LNG, and worked out the ranges of temperature and flow rate in vaporizer when...
Through the DPF regeneration experiment with the DPF inlet temperature slowly increased, the balance point temperature of DPF and pressure-drop characteristics with temperature change in the DPF regeneration process have been determined. Obtained from the experiment, with the DPF inlet temperature increasing, particle oxidation rate is greater than the loading speed, and the DPF pressure-drop decreases...
Use CFD (Computational Fluid Dynamics) technique to simulate the water jacket of 4G24 gasoline engine is an effective way to look into the internal flow status of the water jacket. After calculation analysis, it is found that part of regional flow rate is too low in the cylinder head and block water jacket, where is easy to form dead areas. The HTC (Heat Transfer Coefficient) on cylinder block intake...
In this paper, the engine optimal matching is done to improve the efficiency of a turbocharged lean-burn LPG engine by optimizing the compression ratio and the distribution phase of camshaft. In this way, the gas consumption and emissions of the LPG engine are reduced. A one-dimensional engine model and a three-dimensional in-cylinder combustion model are set up with simulation software. The optimal...
In this paper, the engine optimal matching is done to improve the efficiency of supercharging lean burn LPG engines by optimizing the compression ratio and the distribution phase of camshaft. The gas consumption and emissions of LPG engine are reduced. A whole engine model is set up on one-dimensional simulation software. The optimal compression ratio is determined by comparing the simulation computed...
By using dynamic programming (DP) which is kind of global optimization algorithm, an energy management control strategy for a parallel plug-in hybrid electric vehicle (PHEV) on different charging depleting range (CDR) has been studied. The results show that Motor-Dominant control strategy should be applied to the PHEV when CDR is less than 55 km, and Engine-Dominant control strategy should be used...
The evaluation for Web service is essential to select Web services from many candidates, but current evaluation models evaluate Web service only by common service attributes, which can not meet the requirements of end users. We propose an evaluation model for Web service, which customizes reasonable attributes in different domains as evaluation factors, and computes the weights of evaluation factors...
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