Free Publication

Implementing Full Electric Turbocharging Systems On Highly Boosted Gasoline Engines

Written by Q. Zhang, P. Lu, P. Dimitriou, S. Akehurst, C. Copeland from University of Bath, Prof. M. Zangeneh from ADT, B. Richards from Aeristech Ltd. and G. Fowler from Jaguar Land Rover Ltd.

What's inside?

To secure the highly challenging 2°C climate change limit, the automotive sector is expected to further improve the efficiency of the internal combustion engines. Over the past decade, internal combustion engine downsizing through turbocharging has become one of the major solutions that the industry has offered to fulfil its carbon commitment. Although the various new turbocharging technologies has changed the sluggish image of conventional turbocharged engines, the turbocharger system is far from perfect.

This paper presents a simulation study of the capability of the decoupled eTurbocharging system to charge a highly boosted 2 litre gasoline engine.

This paper compares the performance of a conventional turbocharged engine model with a two-stage boost engine model equipped with a decoupled electric turbocharger. A carefully designed control strategy is designed for the electric turbocharger for a variety of engine speed/load conditions.

In this publication, you will:

  1. Discover how the simulation results have revealed that the two stage eTurbocharging system has the potential to reduce CO2 emission in the proximity of 1 percent in different drive cycles compared to conventional waste gate turbocharger and the benefit would be much higher for future real world driving cycle.
  2. See the design technics and approaches for turbines and compressors for turbocharged engines.
  3. Understand why such an approach leads to a substantial reduction of the computational cost.