JLR wants better charging systems

摘要

Squeezing more air into the combustion chambers will enable next-generation gasoline engines to become even more fuel efficient but boosting technology must improve first. Thaf s the conclusion of the Ultraboost collaborative research and development project. Jaguar Land Rover (JLR) was the lead partner in the project which investigated the replacement of a 5-litre naturally aspirated V8 with a forced-induction 2-litre four-cylinder. This downsizing exercise delivered a 15% improvement in fuel efficiency with almost no difference in performance. But Ultraboost showed that there was further potential for efficiencies by exploiting better turbos and superchargers.