A device and a method to reduce a power dissipation of an electronic control unit used in an internal combustion engine

摘要

A device and method to reduce a power dissipation of an electronic control unit ECU (100) is disclosed. The ECU (100) controls an intake valve (301) or an exhaust valve (302) of an internal combustion engine (300) by an electro hydraulic system (202,203). If a temperature of the ECU (100) gets too high, different electric current patterns can be used for controlling the intake valve (301) or the exhaust valve (302), which generate less power dissipation in the ECU (100).