Patent ID: 8398851
Filing Date: 2013-03-19
Classification: G01N

Abstract:
1. A device for determining a proportion of fuel in an internal combustion engine lubricating oil, said lubricating oil containing an internal standard, and said lubricating oil and said internal standard being diluted in a solvent to form a mixture to be analyzed, said device comprising a gas phase chromatograph which comprises: an injector of the products to be analyzed, a separating column having an inside diameter Φ, a length L and a stationary phase, said separating column being fed with carrier gas, a heating module, and a detector of said products, said separating column comprises at least 22000 theoretical plates, the stationary phase, which is in the separating column in the form of a film of at least 0.40 μm, is suitable for separating said internal standard, said solvent, said fuel and said lubricating oil, said heating module is suitable for causing an increase in the temperature of the column to at least 310° C. at a rate of at least 350° C./min.