Page 1/8 E-supercharging for Heavily Downsized Gasoline Engines

Abstract: The next generation of heavily downsized-gasoline engines will demand advanced charge-delivery systems. High-pressure charge-air is required across a broad engine speed range, and to meet driveability requirements, this high pressure charge-air needs to be available almost instantly. Gasoline engine downsizing is already established as a proven technology for reducing CO2 emissions by up to 25 %. Further benefits are possible through greater downsizing. However, there is a trade-off between the CO2 reduction achieved and vehicle driveability, which currently limits the level of engine downsizing adopted. The key objective of this project is to demonstrate the highest specific power and torque output combination of any gasoline engine for the road car market, whilst retaining an excellent drivability and fuel economy