BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction valve for an automobile, and more particularly, to a suction valve for an automobile which is configured to vigorously vortex air sucked from an outside to a suction valve to enable complete combustion in a cylinder, To a suction valve for an internal combustion engine. The present invention relates to a rocker arm shaft having a concave portion formed concavely to be connected to a rocker arm shaft, a valve guide portion connected to a lower side of the concave portion to guide the suction valve, and a tapered And a contact portion formed on the lower side of the tapered portion to contact the cylinder head to adjust the amount of fuel supplied to the inside of the cylinder. The tapered portion is provided with a plurality of grooves for strongly vortexing And is formed on the outer circumferential surface thereof.
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