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RISMeanline Modeling of Inlet Recirculation in Automotive Turbocharger Centrifugal Compressors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study provides a novel meanline modeling approach for centrifugal compressors. All compressors analyzed are of the automotive turbocharger variety and have typical upstream geometry with no casing treatments or preswirl ...
Analysis of Thrust Bearing Impact on Friction Losses in Automotive Turbochargers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The importance of automotive turbocharger performance is continuously increasing. However, further gains in efficiency are becoming progressively difficult to achieve. The bearing friction losses impact the overall efficiency ...
A Comparison of a Mono , Twin , and Double Scroll Turbine for Automotive Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: As a means of meeting ever increasing emissions and fuel economy demands, car manufacturers are using aggressive engine downsizing. To maintain the power output of the engine, turbocharging is typically used. Due to the ...
Characterizing the Influence of Impeller Exit Recirculation on Centrifugal Compressor Work Input
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Impeller recirculation is a loss which has long been considered in one-dimensional (1D) modeling; however, the full extent of its impact on stage performance has not been analyzed. Recirculation has traditionally been ...
Numerical and Experimental Investigation of the Impact of Mixed Flow Turbine Inlet Cone Angle and Inlet Blade Angle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mixed flow turbines (MFTs) offer potential benefits for turbocharged engines when considering off-design performance and engine transient behavior. Although the performance and use of MFTs are described in the literature, ...
A Three-Zone Modeling Approach for Centrifugal Compressor Slip Factor Prediction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate estimation of slip factor is of paramount importance to ensure centrifugal compressor work input is adequately predicted during the preliminary design process. However, variations in the flow field at impeller ...
Numerical and Experimental Investigation of the Impact of Mixed Flow Turbine Inlet Cone Angle and Inlet Blade Angle
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Mixed flow turbines (MFTs) offer potential benefits for turbocharged engines when considering off-design performance and engine transient behavior. Although the performance and use of MFTs are described in the literature, ...
Contactless Shaft Torque Detection for Wide Range Performance Measurement of Exhaust Gas Turbocharger Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Turbochargers develop away from an auxiliary component—being “off the shelveâ€â€”towards an integrated component of the internal combustion engine. Hence, increased attention is paid to the accuracy of the measured ...
Unsteady Thrust Force Loading of a Turbocharger Rotor During Engine Operation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The bearing system of a turbocharger has to keep the rotor in the specified position and thus has to withstand the rotor forces that result from turbocharger operation. Hence, its components need to be designed in consideration ...
Design and Performance Analysis of Mixed Flow Turbine Rotors With Extended Blade Chord
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Mixed flow turbines offer additional design freedom compared with conventional radial turbines. This is useful in the automotive turbocharger application to reduce rotor inertia, which can be very beneficial for the transient ...