Modelling of hybrid plus retrofit hybrid system

This paper focuses on addressing theoretical and practical considerations in developing a retrofit system for traditional internal combustion engine vehicle. Extensive simulation test results and theoretical analyses are presented and analyzed. Firstly, the basic theory of design is discussed in term of the market needs, target vehicle chosen, system components chosen, etc. A controller algorithm design is discussed in details. The performance test results are simulated later in several drive cycles. The results show that the retrofit kit can improve about 3% fuel consumption in a NEDC and 19% in a real world urban delivery drive cycle.