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AssigneesTotal Raffinage Marketing, Delta Services Industriels S.P.R.L.
InventorFrancois Martin
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The invention relates to a method of determining the consumption of oil from an oil separation system (2) in the blow by gas recycling circuit of an internal combustion engine. The invention is characterised in that it comprises the following steps consisting in: marking the lubrication oil of the engine by inserting at least one radioactive tracer, trapping the oil that has not been separated from the blow by gases exiting the oil separation system (2) in an oil trapping device (4) which is located downstream of the oil separation system (2); using a detector (3), which is positioned close to the oil-trapping device (4) and which is sensitive in the ionising radiation emitted by the radioactive tracer(s), in order to measure the radioactivity of the oil which has not been separated in the oil separation system (2) and which is held back by the oil-trapping device (4); and transmitting the results of said measurements to a computer (5) which can calculate therefrom the consumption of lubricating oil that has not been separated in the separation system (2). The invention also relates to a device for implementing one such method.
A method of determining the consumption of oil coming from the oil separation system (2) located in the circuit for recycling the blowby gases of an internal combustion engine, characterized in that:
The method as claimed in either of the preceding claims, characterized in that the blowby gases coming from the trapping device (4) are released into the atmosphere or sent to the intake (D) of the engine.
The method as claimed in any one of the preceding claims, characterized in that the oil trapping device (4) is a second separation system comprising one or more static separation elements and/or one or more cyclones and/or one or more filtering elements.
The method as claimed in any one of the preceding claims, characterized in that the oil trapping device (4) is designed so that the pressure difference (ΔP) between the inlet of the oil separation system (2) and the outlet of the oil separation system (2) is substantially the same as the value of this pressure difference in the absence of the trapping device.
The method as claimed in any one of the preceding claims, characterized in that the radioactive tracer is an organic or mineral compound of a radioactive element.
The method as claimed in one of the preceding claims, characterized in that the radioactive element has a period, or half-life, of less than 3 years, preferably less than 1 year and in particular less than 30 days.
The method as claimed in any one of the preceding claims, characterized in that the detector is an ionizing radiation detection probe.
A device for determining the consumption of oil coming from the oil separation system (2) located in the circuit for recycling the blowby gases of an internal combustion engine, characterized in that it comprises:
Dependencies are inferred from the claim text.