Utilization of Turbocharger Speed Data to Increase Engine Power and Improve Air Path Control Strategy and Diagnostics.

Paper #:
  • 2017-01-1068

Published:
  • 2017-03-28
Abstract:
Turbocharging is significantly changing design and control strategies for diesel and gasoline engines. This presentation will review new advances in the turbocharger speed measurement. Until recently, the highly accurate and fast turbocharger speed data, based on physical speed sensor signal, has been mainly used to safely decrease conservative safety margins for turbocharger speed and surge limits. In addition to significantly increased power and low end torque, new generation sensor technology is enabling revolutionary opportunities to utilize turbocharger speed data. Due to a new, state-of-art active eddy current based speed sensor technology, including a configurable high temperature ASIC, and the high accuracy and extremely fast delivery of turbocharger speed data, engine and turbocharger performance will benefit from improved control, advanced diagnostics and ability to virtualize other powertrain sensors (e.g. mass air flow and exhaust gas temperature sensors). Thereby optimized engine efficiency will equate with lower emissions, fuel savings and increased reliability. This presentation will review and summarize over twenty versatile, new and unique opportunities of benefitting from turbocharger speed data for a broad range of automotive and commercial / industrial transportation applications including passenger cars, trucks, off-highway and motorsport vehicles. Finally, it will also highlight a control strategy overview, based on the comparison of a various means to measure turbocharger speed.
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