Engine performance condition with turbochargers

FIGURE 3.6 Adaptation of engine performance condition with turbocharger of GT32. 

In agreement with pervious parts, in order to achieve a proper adoption for engine, all performance points of engine which is equipped to turbocharger should be obtained. As mentioned above, performance points include constant speed lines and constant load which are overlapped on compressor curve. If engine performance condition be at safe region and upper level of compressor efficient curve, it ensures suitable adaptation of engine and compressor. 

In this study we have used GT-POWER software to obtain performance conditions of an engine which equipped with a turbocharger. In spark-ignition engines, the throttle controls load at constant rotation. This process performs by changing the density of suction air and the consumption fuel of engine [6]. 

Besides aerospace applications, interest is focused on automotive engine applications, e.g. valves and turbocharger rotors, which may be nearer to realization (Kim and Dimiduk, 1991). A successful development has led to a cast TiAl turbocharger rotor of about 4 cm diameter which compares favorably with both a superalloy Inconel 713C rotor and a ceramic SiN rotor with respect to performance under service conditions, and which is ready for use in high-performance passenger cars (Nishi-yama et al., 1990). 

INVESTIGATION ON PERFORMANCE OF TURBOCHARGED SPARK-IGNITION ENGINE EQUIPPED WITH ANTISURGE VALVE AND BYPASS FLOW CONTROL MECHANISM AT VARIOUS WORKING CONDITIONS... 

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