▎ 摘　　要

NOVELTY - The method involves rotating an internal combustion engine by a selected motor unit instead of a starting motor. An intake manifold is configured to suck a mixed gas of acetylene gas and oxygen. The motor unit is rotated with a power supply and a control device to drive the internal combustion engine, where graphene is generated in process of explosion of acetylene gas and oxygen gas by the stroke of intake, compression, explosion, and exhaust process and discharged to the exhaust manifold. USE - Method for making graphene using an internal combustion engine. ADVANTAGE - The method enables performing simple manufacturing process, so that large amount of the graphene can be produced. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of an internal combustion engine. Oil pan (10) Internal space (11) Crank (13) Crankshaft (14) Connecting rod bearing (16)