2021 年 14 巻 p. E21-006-1-E21-006-13
For the ECU that controls the electronic fuel injection system, we applied the card edge connector, which is a consumer electronics technology, and the transfer molding using a semiconductor manufacturing method. The developed ECU, all of the printed circuit board except the edge connector terminals was sealed with the specialized epoxy resin. This was the practical use of the world's first waterproof structure in the ECU alone. In addition, we have developed a waterproof card edge connector that mates with this ECU. A new insertion mechanism, multiple contact terminals, and the printed circuit board with little strength change were applied. Thus, satisfied the durability requirements for motorcycles. These technologies have been applied the ECU have achieved more than five times the productivity and 20% cost reduction compared to conventional type. The developed product has been put into practical use for small motorcycles since the 2018 model.
