An apparatus and a method for controlling an engine

摘要

Engine cranking control is ended when it is detected that the battery voltage for driving the starter is lowered to at least as low as a starter drive judgement value and thereafter, returns to at least a starter stop judgement value during the engine cranking control that is started on condition that an engine is rotating. A start for driving a starter and a stop of driving the starter can be distinguished based on battery voltage where the battery voltage recovers due to a rapid reduction of consuming current and a rapid increase of a generating current when a driver recognizes an engine combustion completion and stops a starter driving. As a result, on increase of an engine friction, the cranking control is accurately ended, preventing deterioration of a fuel economy and excess exhaust gas emission. <IMAGE>