Abstract
In order to improve fuel economy of heavy duty vehicles at actual driving condition, new system concept of hybrid electric heavy duty vehicle was proposed at 1st report. The key technology of this system is the electric-booster. In this report, engine performance and exhaust emissions was investigated using 4 cylinder diesel engine equipped with electric-booster. Test condition of this engine system was high boosted and wide range EGR. This test result of fuel consumption and exhaust emissions was improved at the same time. And, electrical power of electric-booster was able to be supported by regeneration energy of medium duty hybrid electric vehicle, when regeneration energy of this vehicle was investigated by chassis dynamometer equipment.
