Development of New Toyota D-Series Turbocharger for GD Diesel Engine

Paper #:
  • 2015-01-1969

Published:
  • 2015-09-01
DOI:
  • 10.4271/2015-01-1969
Citation:
Tsukiyama, T., Yonezawa, K., Iwata, H., and Ishikawa, M., "Development of New Toyota D-Series Turbocharger for GD Diesel Engine," SAE Int. J. Engines 9(1):252-261, 2016, https://doi.org/10.4271/2015-01-1969.
Pages:
10
Abstract:
There is increasing demand for highly functional diesel engine turbochargers capable of meeting Euro 6 emissions regulations while improving dynamic performance and fuel economy. However, since these requirements cannot be easily satisfied through refinements of existing technology, Toyota Motor Corporation has developed the new D-series turbocharger for initial installation in its GD diesel engine. The higher efficiency and wider operation range of the new turbocharger enabled the amount of the turbine flow capacity to be reduced by 30%, while helping to improve dynamic response and fuel economy. The mechanism causing the generation of fuel deposits in the fuel injection system upstream of the turbocharger, which was adopted for compliance with emissions regulations, was analyzed and fundamental countermeasures were applied. The result is a new highly functional turbocharger with greatly enhanced reliability.
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