Comparison of Charging Systems for Spark Ignition Engines

Authors

Prof. Dr. U. D. Grebe, P.-I. Larsson, Dr. K.-J. Wu, General Motors Powertrain, Pontiac

Year

2007

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 639

Summary

Until recently, boosting of spark ignition engines has been used to widen the performance bandwidth of existing engine families. In light of the further reduction of fuel consumption and emissions of vehicles, boosting combined with the downsizing of the engine displacement is becoming more and more important. The biggest challenges are a high full load torque at low engine speed (low-end-torque) and a fast transient torque ramp-up. Supercharging and turbocharging are the two major systems that can be used individually or in combination. In addition, boosting can be combined in a synergistic way with additional technologies in the drivetrain, like optimized transmissions and hybridization.

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