| 摘要 |
PURPOSE: A double piston cylinder is provided to remarkably save fuel for an engine and to show the remarkable effect with a little oil pressure. CONSTITUTION: The double piston cylinder has the components such as:a bolt connecting a double piston with the other double piston; a nut controlling an interval between double pistons as desired; a fixing pin fixing the double pistons to make them one; therefore, oil pressure or all kinds of force of pressure is diffused from the surface when performing the first stroke of the piston in a cylinder to use a small amount of compressed gas and air pressure and to save energy of air pressure of gasoline diesel oil pressure.
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