With ever-tightening environmental regulations around the world, emission regulations for cars with internal combustion engines are becoming more stringent. In order to improve emissions performance, it is necessary for such cars to efficiently burn fuel to achieve complete combustion as much as possible. Accordingly, the direct fuel injection method that directly injects fuel at high pressure into the cylinder has been adopted to facilitate highly efficient fuel combustion. Complete combustion requires fuel to be atomized and finely injected.
For that purpose, it is indispensable for the coil used to boost the voltage of the injector drive unit of a direct injection engine to have the low loss and high withstand voltage characteristics in order to shorten its boost voltage recovery time.
In addition, more automotive ECUs are being placed in the engine compartment, increasing the integration of mechanical and electronic in-vehicle components. Moreover, this trend has created a need for automotive ECUs that can be installed in high-temperature environments under more severe vibration conditions and support larger currents.
Low-loss and high withstand voltage
Small size and large current
High vibration resistance
⇒ High efficiency of direct injection engine (shortening of boost recovery time)
⇒ ECU space saving
⇒ Installation of ECU in engine compartment and the integration of mechanical
and electronic in-vehicle components