Patent ID: 9322818
Filing Date: 2016-04-26
CPC Classification: G01N

Claim Text:
1. A fuel physical property determination method to determine a physical property of a test fuel, the method comprising: a test fuel flame-imaging step of obtaining first imaging data by imaging flames formed inside a test tube by supplying a pre-mixed gas containing the test fuel and an oxidant agent, to the test tube which includes an internal flow path and in which a temperature distribution is formed; and a physical property determination step of determining the physical property of the test fuel by comparing the first imaging data obtained in the test fuel flame-imaging step and second imaging data obtained by imaging flames ignited inside the test tube by supplying a pre-mixed gas containing a standard-mixed fuel and an oxidant agent, to the test tube, the standard-mixed fuel having a known physical property, wherein the internal flow path of the test tube has a diameter set to be smaller than a flame-quenching distance at normal temperature, and in the physical property determination step, data denoting a generation position of the flames in the first imaging data and data denoting a generation position of the flames in the second imaging data are used when the first and second imaging data are compared.