Control of fuel injection for direct-injection internal combustion engines, uses detection of engine speed to determine whether the engine starting phase is fully underway and reduces fuel if it is not

摘要

The start of combustion in the engine is detected from engine speed and if the engine speed is low the engine is too cold for full combustion (240), so the duration of the fuel injection interval is reduced (250). When the engine speed rises above a set level, the engine is assumed to be warm and starting correctly (260), and the duration of fuel injection is increased (270) to complete starting.