Radiant energy – Radiation tracer methods – Radioactive tracer methods
Reexamination Certificate
2008-07-22
2008-07-22
Vanore, David A. (Department: 2881)
Radiant energy
Radiation tracer methods
Radioactive tracer methods
C250S301000, C250S302000, C250S356200, C250S380000, C250S381000, C250S384000, C701S101000, C436S056000, C436S057000, C073S023310, C073S053050
Reexamination Certificate
active
07402800
ABSTRACT:
The invention relates to a method for the continuous determination of the damage to at least one system (7) used for the post-treatment of exhaust gases from an internal combustion engine (2), caused by the lubricating oil, the fuel and/or at least one lubricating oil additive and/or fuel additive used. The inventive method consists in: (i) using a determined quantity of at least one radiotracer in order to modify the lubricating oil, the fuel and/or the additive for which the impact on the post-treatment system (7) is to be measured; (ii) measuring the quantity of radiotracer originating from the exhaust gases which has accumulated in the post-treatment system (7), said measurement being taken using a detector (10) which is sensitive to radiation emitted by the radiotracer that has accumulated in the post-treatment system (7); and (iii) transmitting the measurements taken by the detector (10) to a programmed computer (11) which can convert said measurements into the degree of damage caused to the post-treatment system by the lubricating oil, the fuel and/or the additive(s). The invention also relates to a device which is used to implement the inventive method.
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Delvigne Thierry
Obiols Jerome
Delta Services Industriels S.P.R.L.
Souw Bernard
Sughrue & Mion, PLLC
Total Fina Elf France
Vanore David A.
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