Abstract: A fuel injection device and method includes a main injection valve that injects a high-pressure fuel supplied to a delivery pipe into each combustion chamber of an engine, and an auxiliary fuel injection valve supplied with the high-pressure fuel from the delivery pipe. The auxiliary fuel injection valve is capable of injecting the high-pressure fuel in sucked air flowing in a surge tank when the engine is started under cold conditions. In addition, a fuel pressure can rapidly be increased in a starting phase since vapor in the delivery pipe can be discharged by temporarily opening the auxiliary fuel injection valve.

Abstract: In an exhaust gas recirculation control apparatus for an internal combustion engine, an outward opening type exhaust gas recirculation (EGR) valve arranged so that an exhaust gas pressure acts in a closing direction thereof is provided in an EGR passage of the internal combustion engine. The EGR valve is driven for opening and closing by a stepping motor which is driven and controlled by an electronic control apparatus. The electronic control apparatus estimates a magnitude of a difference between an intake negative pressure and a back pressure acting on the EGR control valve based on an output of an intake pressure sensor, and varies the driving speed of the stepping motor when the EGR control valve opens from its fully closed position in accordance with a magnitude of the pressure difference.