Development of High Pressure Ratio Wide Flow Turbocharger for Vehicle Diesel Engine

XING Weidong; TONG Ding; LIU Ying; DENG Chunlong; MEN Rixiu; WU Xintao

doi:10.7643/ issn.1672-9242.2024.06.006

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Equipment Environmental Engineering ›› 2024, Vol. 21 ›› Issue (6) : 37-44. DOI: 10.7643/ issn.1672-9242.2024.06.006

Special Topic—Environmental Worthiness Design and Testing Technology for Special Vehicles

Development of High Pressure Ratio Wide Flow Turbocharger for Vehicle Diesel Engine

XING Weidong¹, TONG Ding¹, LIU Ying², DENG Chunlong¹, MEN Rixiu^1,3, WU Xintao¹

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Abstract

The work aims to improve the design of the single stage high pressure ratio wide flow turbocharger, making it adapt to the engine strengthening index. The simulation design and experiment were combined to improve the design of the turbocharger for high altitude environment. Through theoretical derivation, the optimal design method of aerodynamic performance of the compressor and turbine was determined. The design method of the rotor bearing system with high stability margin was studied and verified. Compared with the original engine, the engine with high press ratio wide flow turbocharger restored the high altitude power by 17%, reduced the engine exhaust temperature by 7%, and reduced the turbocharger speed by 13%. A wide flow turbocharger with a pressure ratio of 4.6 is designed on the basis of the original engine, and the design of the high pressure ratio wide flow turbocharger is successfully realized, which can meet the operation requirements of the engine in plain and plateau.

Key words

high pressure ratio / turbocharger / compressor / turbine / rotor / high altitude environment

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XING Weidong, TONG Ding, LIU Ying, DENG Chunlong, MEN Rixiu, WU Xintao. Development of High Pressure Ratio Wide Flow Turbocharger for Vehicle Diesel Engine[J]. Equipment Environmental Engineering. 2024, 21(6): 37-44 https://doi.org/10.7643/ issn.1672-9242.2024.06.006

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