Patent ID: 6851404

Claim:
A device for starting an engine, the engine including a crankshaft, an intake passage, an exhaust passage, and a plurality of cylinders having respective combustion chambers, pistons, intake valves, and exhaust valves, the device comprising: means for setting a target amount of the reverse rotation of the crankshaft; and means for rotating the crankshaft first reversely by the target-amount of the reverse rotation and then rotating forwardly, to start the engine, wherein, when the crankshaft is rotated reversely, the piston displaces upwardly while the intake valve is opened within a crank angle range corresponding to the intake stroke during the forward rotation of the crankshaft, to thereby generate a backward gas flow from the combustion chamber to the intake passage, and wherein the target amount of the reverse rotation is set to generate the backward gas flow from the combustion chamber to the intake passage in all cylinders.