| 摘要 |
Disclosed is a fuel property detection device that detects optical characteristics and electrical characteristics of fuel. The fuel property detection device detects the concentration of at least one component of fuel in accordance with the optical characteristics and detects the amount of metallic impurities contained in the fuel in accordance with the optical characteristics and with the electrical characteristics. The optical characteristics are represented, for instance, by a photorefractive index or a light transmittance that is obtained when light is incident on the fuel. The electrical characteristics are represented, for instance, by an electrical conductivity, a capacitance, or an AC impedance that is obtained when a voltage is applied between a pair of electrodes disposed to sandwich the fuel.
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