Homogeneous lean burn engine combustion system development – Concept study

TMG (TOYOTA Motorsport GmbH) and FEV have jointly conducted a concept study on environmentally friendly engine with indicated thermal efficiency (ɳinet) of 46% and low emissions while fulfilling high-performance criteria i.e. specific power of 103 kW/l and low end torque (LET) of 2.3 MPa BMEP at 2000rpm. An ultra lean-burn combustion concept has been designed by means of 1D and 3D MBD (Model Base Development) methods and subsequently validated experimentally by a single cylinder TC GDI engine as a technology demonstrator in order to fulfill the requirements of both environmental sustainability and fun to drive in passenger cars.