The reports from each year can be viewed as PDF files.
The DC-DC Converter for the Electric Power Steering (EPS) takes the high voltage of the hybrid vehicle and converts it down to a lower voltage for use by the electric power steering system. The change to an electric powered system from a hydraulic system has contributed to the improvement of the vehicle’s fuel efficiency.
An increase in the size of the converter itself has been minimized due to a major review of its electronic parts and other innovations, such as using CAE (a computer-aided design support system) to optimize the shape of its heat dissipation structure. At the same time high power output was achieved and its power output density (the value obtained by dividing the rated power output by the product’s cubic volume) was also increased greatly.
The amount of lead contained in the product has been greatly reduced.
Lead-free solder is also used in the product’s printed circuit boards.