Method and apparatus for detecting a contaminated alcohol-gasoline fuel mixture

摘要: A method and apparatus are described for detecting dissolved contaminants in an alcohol-gasoline mixture used fueling internal combustion engine then indicating that the fuel is of substandard quality when degree contamination reaches unacceptable level. The resistivity mixture, which varies as a function contamination, measured using sensor positioned supply line. When decreases below threshold amount, indication provided. amount may be fixed constant, or its value vary depending upon proportion alcohol to gasoline mixture. composition determined by capacitive measuring dielectric constant. separate resistive sensing resistivity, same constant can switched between circuitry.