Energy regeneration control system and method for an internal combustion engine

摘要

A energy regeneration device 30 is provided, which performs energy regeneration by converting kinetic energy of a vehicle into electric energy. The opening of a throttle valve 17 is controlled so as to achieve a minimum difference between the intake pressure and the exhaust pressure when energy regeneration is performed. In order to reduce the pressure difference, an EGR control valve 26 is maintained at a fully-opened position during energy regeneration.