| 摘要 |
[Problem] The purpose of the present invention is to provide a method with which it is possible to precisely and conveniently measure the cylinder volume when a piston is in the top dead center position, without the measurement being influenced by the gap around the piston ring, in the combustion chamber of a reciprocating engine. [Solution] The present invention is a volume measuring device for a cylinder in a reciprocating engine, the volume measuring device being characterised by comprising: a coating forming means which, using pyrolytic resin, forms a coating on either part or all of the inner surface of the cylinder; a pressure measuring means which introduces a fixed quantity of gas into the cylinder in which the coating has been formed, or derives a fixed quantity of gas from the inside of the cylinder, and measures the pressure within the cylinder before and after the introduction/emission; and a volume calculating means which uses the pressure value obtained by the pressure measuring means to calculate the volume of the cylinder. |
