Patent ID: 7066128
Filing Date: 2006-06-27
Classification: F02D,F02N

Abstract:
1. An engine controller controlling start and stop of an engine that has an intake port to which a fuel is injected, the engine controller comprising: a stroke estimating means for estimating, during a shut-down period of the engine, a stroke of each cylinder when the engine is stopped, the stroke estimating means storing an estimated result; a fuel injection control means for injecting a fuel, which is required to start the engine in a next starting time, into the cylinder which is estimated to be stopped in a power stroke or in a compression stroke based on the estimated result; and a starter-motorless-start control means for igniting and combusting an air-fuel mixture in the cylinder that is estimated to be stopped in the power stroke so as to begin a cranking by a combusting energy of the air-fuel mixture, the starter-motorless-start control means igniting, at a next ignition timing, an air-fuel mixture in the cylinder that is estimated to be stopped in compression stroke in order to start the engine without an aid of a starter.