Method and device for the real-time measurement of the consumption of oil from an engine oil separation system, using radioactive tracers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01T-007/02
G01T-001/16
출원번호
UP-0591397
(2005-03-11)
등록번호
US-7763850
(2010-08-13)
우선권정보
FR-04 02541(2004-03-11)
국제출원번호
PCT/FR2005/000590
(2005-03-11)
§371/§102 date
20061027
(20061027)
국제공개번호
WO05/088085
(2005-09-22)
발명자
/ 주소
Martin, François
출원인 / 주소
Total Raffinage Marketing
Delta Services Industriels S.P.R.L.
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
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 e
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.
대표청구항▼
The invention claimed is: 1. A method for determining oil consumption coming from an oil separation system located in a circuit for recycling blowby gases of an internal combustion engine, comprising: labeling the lubricating oil for said internal combustion engine by introducing at least one radio
The invention claimed is: 1. A method for determining oil consumption coming from an oil separation system located in a circuit for recycling blowby gases of an internal combustion engine, comprising: labeling the lubricating oil for said internal combustion engine by introducing at least one radioactive tracer into said lubricating oil; passing the blowby gases, leaving the engine block and laden with lubricating oil, through the oil separation system, wherein at least some of the oil contained within said blowby gases is separated, collected and returned to an oil sump; subsequently bringing the blowby gases coming from the oil separation system to an oil trapping device located downstream of said oil separation system, whereby the oil not separated from the blowby gases coming from the oil separation system is retained in the oil trapping device; measuring the radioactivity of the oil retained in the oil trapping device by using a detector, which is placed near the oil trapping device and is sensitive to the ionizing radiation emitted by the radioactive tracer(s); and transmitting the results of these measurements to a computer capable of calculating the consumption of lubricating oil not separated in said separation system from these results. 2. The method as claimed in claim 1, wherein the oil separation system comprises several separators connected in series or in parallel. 3. The method as claimed in claim 1, further comprising releasing the blowby gases coming from the trapping device into the atmosphere or to an intake (D) of the internal combustion engine. 4. The method as claimed claim 1, wherein the oil trapping device 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. 5. The method as claimed in claim 1, wherein the oil trapping device is designed so that the pressure difference (ΔP) between the inlet of the oil separation system and the outlet of the oil separation system is substantially the same as the value of this pressure difference in the absence of the trapping device. 6. The method as claimed in claim 1, wherein the radioactive tracer is an organic or mineral compound of a radioactive element. 7. The method as claimed in claim 1, wherein the radioactive element has a period, or half-life, of less than 3 years. 8. The method as claimed in claim 7, wherein the radioactive element is selected from the group consisting of 22Na, 65Zn, 45Ca, 35S, 32P, 47Ca, 99Mo, 82Br, 64Cu, 99mTC, 28Mg, 68Ge, 69Ge, 77Ge, 85Sr and 56Co. 9. The method as claimed in claim 8, wherein the radio tracer is selected from the group consisting of tetra-alkylgermanes containing 69Ge. 10. The method as claimed in claim 8, wherein the radio tracer is 99mTc. 11. The method as claimed in claim 8, wherein the radio tracer is selected from the group consisting of tetrahexylgermane, tetraheptylgermane and tetraoctylgermane, and mixtures thereof. 12. The method as claimed in claim 8, wherein the radio tracer is 99mTc in the form of an aqueous solution of sodium pertechnetate NaTcO4 or in the form of nanoscale particles isolated from the atmosphere by carbon. 13. The method as claimed in claim 1 wherein the detector is an ionizing radiation detection probe. 14. The method as claimed in claim 1, wherein the radioactive element has a period, or half-life, of less than 1 year. 15. The method as claimed in claim 1, wherein the radioactive element has a period, or half-life, of less than 30 days. 16. A device for determining the consumption of oil coming from an oil separation system located in a circuit for recycling blowby gases of an internal combustion engine, comprising: an internal combustion engine lubricated by an oil labeled by introducing at least one radioactive tracer into said oil; an oil separation system that receives the blowby gases laden with lubricating oil leaving the engine block, where at least some of the oil contained in said blowby gases is separated, collected and returned to the oil sump; downstream of the oil separation system, an oil trapping device; a detector sensitive to the ionizing radiation emitted by the radioactive tracer(s), located in the immediate vicinity of the trapping device, so as to measure the radioactivity of the oil not Separated in the oil separation system but retained in the oil trapping device; and connected to said detector, a computer programmed for calculating the consumption of lubricating oil not separated in said separation system from the results of the radioactivity measurements. 17. The device as claimed in claim 16, characterized in that the oil trapping device is designed in such a way that the pressure difference (ΔP) between the inlet and the outlet of the oil separation system is approximately the same as the value of this pressure difference in the absence of said oil trapping device.
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이 특허에 인용된 특허 (3)
Vitale ; Jr. Joseph Anthony ; Gushman Richard William, Furnace for an engine exhaust measurement system.
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