Patent ID: 7891330
Filing Date: 2011-02-22
Classification: F02D,F02N

Abstract:
1. An engine starting method for starting an engine comprising at least one cylinder having a piston therein, a crankshaft connected to the piston in said cylinder, a fuel injection device that injects fuel for generating an air/fuel mixture to be supplied into said cylinder, an ignition device that ignites the air/fuel mixture compressed in said cylinder, and a starter motor that can rotationally drive said crankshaft forward and reversely, wherein said method comprises the steps of; reversely driving said starter motor for once reversely rotating the crankshaft of said engine when the starter switch is turned on; driving said starter motor so as to rotate said crankshaft forward after the reverse driving of said starter motor is finished; causing said fuel injection device to perform first fuel injection at the start at a crank angle position within a crank angle range suitable for injecting fuel for generating the air/fuel mixture to be supplied into the cylinder of said engine in preparation for first ignition at the start performed by said ignition device; causing said ignition device to perform the first ignition at the crank angle position suitable as an ignition position at the start of said engine in the process of forward rotation of said crankshaft; immediately stopping the driving of said starter motor when said starter switch is turned off before said first fuel injection at the start; and continuously driving said starter motor forward until the cylinder into which the air/fuel mixture is supplied by said first fuel injection performs at least one exhaust stroke and then stopping the driving of said starter motor when said starter switch is turned off after said first fuel injection at the start.