An Investigation on the Efficiency Correction Method of the Turbocharger at Low Speed

Jin Eun Chung, Jae Woo Chung, Nam Ho Kim, Sang Woon Lee and Gi Yong Kim
Additional contact information
Jin Eun Chung: Department of Mechanical Engineering, Korea University of Technology and Education, Chungnam 31253, Korea
Jae Woo Chung: Green Car Power System R & D Division, Korea Automotive Technology Institute, Chungnam 31214, Korea
Nam Ho Kim: Green Car Power System R & D Division, Korea Automotive Technology Institute, Chungnam 31214, Korea
Sang Woon Lee: Green Car Power System R & D Division, Korea Automotive Technology Institute, Chungnam 31214, Korea
Gi Yong Kim: R & D Center, Keyyang precision Co. LTD, Gyeongsangbuk 39537, Korea

Energies, 2018, vol. 11, issue 2, 1-14

Abstract: The heat transfer in the turbocharger occurs due to the temperature difference between the exhaust gas and intake air, coolant, and oil. This heat transfer causes the efficiency of the compressor and turbine to be distorted, which is known to be exacerbated during low rotational speeds. Thus, this study proposes a method to mitigate the distortion of the test result data caused by heat transfer in the turbocharger. With this method, the representative compressor temperature is defined and the heat transfer rate of the compressor is calculated by considering the effect of the oil and turbine inlet temperatures at low rotation speeds, when the cold and the hot gas test are simultaneously performed. The correction of compressor efficiency, depending on the turbine inlet temperature, was performed through both hot and cold gas tests and the results showed a maximum of 16% error prior to correction and a maximum of 3% error after the correction. In addition, it shows that it is possible to correct the efficiency distortion of the turbocharger by heat transfer by correcting to the combined turbine efficiency based on the corrected compressor efficiency.

Keywords: turbocharger; compressor; efficiency; low speed; correction (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/2/269/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/2/269/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:2:p:269-:d:128304

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().