Empirical Assessment of the Performance Characteristics in Turbocharger Turbine and Compressor

Hajilouy-Benisi, Ali; Rad, M.; Shah-Hosseini, Majid

doi:10.1111/j.1747-1567.2009.00542.x

Cited by 7 publications

(9 citation statements)

References 5 publications

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“…The development of automotive engine boosting systems is based on the use of compressor and turbine maps usually supplied by its manufacturer and obtained in tests facilities called gas-stands [1]. In these gas-stands the turbochargers are blown by a steady hot compressed air flow [2] [1].…”

Section: Introductionmentioning

confidence: 99%

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On-Engine Measurement of Turbocharger Surge Limit

Galindo

Tiseira

Arnau

et al. 2011

Experimental Techniques

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Society for Experimental Mechanics (SEM)Galindo ABSTRACTIn this paper a new experimental technique is presented to measure the turbocharger surge limit in a regular engine test bench. It is known that the surge margin on engine tests may be very different to that obtained in a steady flow gas-stand. In particular, surge is very dependent on the flow pattern produced by the compressor inlet duct and also on the piping upstream and downstream the compressor. The technique is based in the injection of pressurized air into the intake manifold. In the paper this technique is compared to other ways of measuring the compressor map on engine. Some results with different compressor arrangements are presented and discussed. Finally, this technique allows for measuring not only the actual surge line but also the complete compressor performance map.

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Section: Introductionmentioning

confidence: 99%

“…In these gas-stands the turbochargers are blown by a steady hot compressed air flow [2] [1]. In the compressor side a simple straight duct is usually employed at the compressor inlet, and a big reservoir and a controlling valve at the compressor outlet.…”

Section: Introductionmentioning

confidence: 99%

On-Engine Measurement of Turbocharger Surge Limit

Galindo

Tiseira

Arnau

et al. 2011

Experimental Techniques

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“…The quantification of these uncertainties requires a separate study of parameters such as air temperature, pressure and mass flow and the characteristics of the transducers used to measure them as seen in different works like [3] or [4].…”

Section: Introductionmentioning

confidence: 99%

Uncertainties in power computations in a turbocharger test bench

et al. 2015

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A specific study of the uncertainties of turbine power output measured in turbocharger test benches is presented using the law of uncertainty propagation and the influence of the different terms that contribute to it is shown. Then, non-linear mixed integer mathematical programming algorithms used with the turbine power uncertainty expression become an essential tool to overcome the problem of selection new sensors to improve an existing test rig or to contribute to a new one. A method of optimisation is presented for two different scenarios: first, where the maximum cost is a constraint; second where the maximum uncertainty is a constraint and the total cost is minimised. When using a large transducers database, computational efforts may be reduced by solving the relaxed non-integer problem by means of sequential quadratic programming and then probing the ceilings and floors of the parameters to get an optimum approximation with low costs. A comparison between the linear uncertainty propagation model and Monte Carlo simulations is also presented, only showing benefits of the later method when computing high order statistical moments of the turbine power output probability distribution.

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“…Rotational speed of the turbocharger is recorded by an infrared speed pick-up. Data is acquired automatically by a data acquisition system [14,16]. The schematic of test rig is shown in Fig.…”

Section: Test Facilitiesmentioning

confidence: 99%