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Development of Turbocharger for Improving Passenger Car Acceleration
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English
Abstract
Recently, passenger cars require better acceleration from low engine speed including starting-up in order to decrease the amount of paticulate matter (PM) of diesel engines or to improve the driver's feeling. However, turbocharged cars generally have worse response than the non turbo cars because it takes a few seconds to get the turbocharger rotate up to high speed, usually called “Turbo-lag”. In order to solve this, various technologies have been developed for a turbocharger itself as well as for charging system such as the sequential system. Here in this paper, we focus on the development of the following turbocharger technology to reduce Turbo-lag and to achieve better transient response.
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1.
MIXED-FLOW TURBINE IMPELLER
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2.
TWIN ENTRY TURBINE HOUSING
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3.
BALL BEARING SYSTEM
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4.
SEPARATED THRUST BEARING SYSTEM
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Authors
Citation
Watanabe, T., Koike, T., Furukawa, H., Ikeya, N. et al., "Development of Turbocharger for Improving Passenger Car Acceleration," SAE Technical Paper 960018, 1996, https://doi.org/10.4271/960018.Also In
References
- Minegishi Hiroaki et al. Development of a small mixed-flow turbine for automotive turbochargers International Gas turbine and Aeroengine Congress and Exposition of ASME 1995
- Miyashita Kazuya et al. Development of High Efficiency Ball-Bearing Turbocharger SAE 870354 Feb. 1987