The Ejection Efficiency of Cooling Charge Air and Its Experimental Evaluation
DOI:
https://doi.org/10.14529/engin160303Keywords:
system cooling, ejection, ejector method, the coefficient of ejection, efficiencyAbstract
To increase the power and fuel economy of internal combustion engines is necessary to achieve high degrees of efficiency and perfection of design of major it systems. One way to increase capacity is turbocharged with intermediate cooling of charging air. Among the systems the intermediate cooling of charge air is the least studied system ejection cooling. In order to improve engine design analyzed the functional and design features of the ejection system, cooling of charge air in an internal combustion engine with a supercharger. These estimates compare the studied system with traditional systems-air cooling, are considered and proved the advantages of the proposed system. The detailed description of the device and principle of operation of a software system ejection cooling. Defined objectives and program of the pilot study and determining the efficiency of extraction system-air cooling. The scheme of installation for the experimental determination of the effectiveness of the proposed system-air cooling. Define the required parameters for the analysis of gas-dynamic phenomena in the system of suction jet cooling during the pilot study, matched with the necessary measuring and recording equipment. The effectiveness of the system ejection-type cooling is assessed by the complex of parameters: the coefficient of ejection, ejector efficiency and thermal efficiency of the cooler, depending on the mode of operation of the engine. The selected places of installation of sensors for measuring pressure, temperature and flow gas streams. The limits to measurements of the parameters for the selected sensors. The methodology and calculated dependences to the experimental evaluation of the efficiencyof the ejector, the charge-air cooler and induction system cooling Nadu exhibition of the air in General. The stages of processing of obtained experimental data. Developed methodology and scheme of the setup allows to experimentally evaluate the effectiveness of the ejection system-air cooling and to determine with a reasonable degree of accuracy the best modes of the system.
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