The aim of the research is to develop an innovative high efficient energy conversion concept for heavy duty engine and trucks focused on the integration of energy recovery devices, energy storage and engine auxiliaries electrification on the example of a Natural Gas heavy duty engine.
The energy efficiency strategy will be based on three mainstreams:
Recovery of a portion of the kinetic energy thanks to the adoption of a belt driven generator Recovery of the waste heat with an energy cascading approach: thermoelectric generator operating at high temperature and subsequent turbo-generator
Re-use of the gained electric energy within an advanced board net architecture of e-auxiliaries and storage.
The system includes the sizing and development of an appropriate energy storage system and the adoption of electrified auxiliaries: coolant pump, oil pump, auxiliary e-turbo compressor, air compressor, air conditioning compressor.
The engine control strategies will be tuned and optimized to maximise the efficiency of the energy recovery and re-use subsystems and to take the maximum benefit from the auxiliaries electrification and their consequent higher controllability level.
Finally, The combination of the electric auxiliary turbocompressor and the adoption of a liquid cooled charge air cooler will be implemented as part of the whole strategy to optimise the engine performance and efficiency.
The project will answer to the request to achieve an efficiency at vehicle level well above 50% at acceptable cost.