Abstract
Vehicle, engine, and system experts from many organisations collaborated within the Hyboost project, which was co-funded by the UK government-backed Technology Strategy Board. Led by Ricardo UK, the project’s partners included Ford, Controlled Power Technologies (CPT), Valeo, the European Advanced Lead Acid Battery Consortium, and Imperial College London. The project’s goal was to develop an extremely efficient gasoline powertrain delivering a CO2 emission level of ≤100 g/km over the NEDC in a family size vehicle. This was to be achieved without noticeably impacting the vehicle’s driveability in comparison to the same model with a conventional, naturally aspirated gasoline engine. The basic concept of the research project was to use aggressive downsizing in combination with DI. In order to maintain driveability, an electric supercharger, an additional energy capture and storage function, plus a higher voltage level (12+x V) were added to the powertrain.
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