[특허]Combined oil quality and viscosity sensing system

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60Q-001/00 G01N-011/00 G01N-033/30 G01N-031/00 G08B-021/00
출원번호	US-0954674 (2001-09-17)
발명자 / 주소	Park, Kyong M. Nassar, Marcos A.
출원인 / 주소	Kavlico Corporation
대리인 / 주소	Oppenheimer Wolff & Donnelly LLP
인용정보	피인용 횟수 : 28 인용 특허 : 13

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A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination

A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination. The sensors take measurements as oil flows through an internal combustion engine and provide an indication of the cause of a problem with oil in an engine. The system may also include a microcomputer and circuitry for generating an indication of dielectric constant and circuitry for generating an indication of the presence of contaminants within the engine. The system may also include an additional sensor measuring the temperature of oil within the system to adjust oil dielectric constant and viscosity indications. The capacitive dielectric sensor constitute the principal restriction in the flow path between an input high pressure sensing port and an outlet low pressure port.

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A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination

A combined oil quality and fuel contamination sensing system includes a capacitive dielectric sensor and pressure sensing arrangements for measuring the dielectric constant of the oil and the pressure of the oil, respectively, with the oil pressure being indicative of oil viscosity and contamination. The sensors take measurements as oil flows through an internal combustion engine and provide an indication of the cause of a problem with oil in an engine. The system may also include a microcomputer and circuitry for generating an indication of dielectric constant and circuitry for generating an indication of the presence of contaminants within the engine. The system may also include an additional sensor measuring the temperature of oil within the system to adjust oil dielectric constant and viscosity indications. The capacitive dielectric sensor constitute the principal restriction in the flow path between an input high pressure sensing port and an outlet low pressure port. a neuronal network. 8. The method according to claim 1 in which both of said legs of said work piece are subjected to said flow of air blown through at least two channels per leg provided in said die means, whereby each of said legs is subjected to said air flow both above and below said bending edge means of said die means, and whereby the differential pressure of two of said channel means associated to one of said legs is used for calculating the bending angle. 9. The method of claim 1 in which the bending angle is determined at a plurality of locations distributed along the longitudinal extension of the work piece. 10. A method for determining the bending angle of a work piece that is going to be or has been bent by means of a bending apparatus comprising a punch means and a die means cooperating with said punch means and having two bending edge means, the method comprising the steps of: providing directly operating detection means in at least two different locations on said die means; operating said detection means to detect the position of at least one leg of the work piece to be bent with regard to the position of said die means and to output position data representing the detected position; and calculating the bending angle in response to said position data and on the basis of previously stored reference data, the position of said at least one leg of the work piece to be bent being detected both above and below said bending edge means of said die means. 11. The method according to claim 10 in which the position of said at least one leg of the work piece to be bent is detected in the region of said bending edge means of said die means. 12. The method according to claim 10 in which said detection means is operated to detect the position of both legs of the work piece to be bent with regard to the position of said die means and to output position data representing the detected positions. 13. The method according to claim 10 in which said step of operating said directly operating detection means comprises the steps of detecting the position of at least one leg means of said work piece capacitively, inductively, optically or by means of ultrasonic waves. 14. The method according to claim 10 in which said step of operating said directly operating detection means comprises the steps of: providing at least two probe member means in said die means; and detecting the position of at least one of said leg means of said work piece by means of said probe member means. 15. The method according to claim 10 in which the absolute position value is outputted as said position data, whereby the bending angle is calculated in response to said measured absolute position values and on the basis of formulae, tables, three dimensional diagrams or by means of a neuronal network. 16. The method according to claim 10 in which a differential position value is calculated, whereby the bending angle is calculated in response to said differential position value and on the basis of formulae, tables, three dimensional diagrams or by means of a neuronal network. 17. The method according to claim 10 in which the positions of both of said legs of said work piece are detected with the aid of said probe member means, whereby the positions of each of said legs is detected both above and below said bending edge means of said die means, and whereby the differential value of two of said probe member means associated to one of said legs is used for calculating the bending angle. 18. An apparatus for determining the bending angle of a work piece that is going to be or has been bent by means of a bending apparatus comprising a punch means and a die means cooperating with said punch means and having two bending edge means, said apparatus for determining the bending angle comprising: means for indirectly detecting the position of at least one leg means of said work piece relative to said die means and for outputting measurement signals; means for gene

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이 특허에 인용된 특허 (13) 인용/피인용 타임라인 분석

Williams John G. (Dollar Bay MI) Donnellan Thomas M. (Huntington NY) Trabocco Ronald E. (Blue Bell PA), Dielectric viscometer including fixed and variable cells.
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Christopher John Collister GB, Electrical measurement of oil quality.
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Freese ; V Charles E. (Westland MI) Rostoskey Michael J. (Knoxville TN) Garvey ; III Raymond E. (Powell TN), In-situ oil analyzer and methods of using same, particularly for continuous on-board analysis of diesel engine lubricati.
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Voelker Paul J. (2494 Benchmark Ave. Fremont CA 94536) Hedges Joe D. (120 Corona Way Portola Valley CA 94028), Method and apparatus for fluid quality sensing.
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Meitzler Allen H. (Ann Arbor MI) Saloka George S. (Canton MI), Method and apparatus for sensing the condition of lubricating oil in an internal combustion engine.
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Nagy Louis L. (Warren MI) Myers ; Jr. Mark E. (Bloomfield Hills MI), Method of detecting soot in engine oil using microwaves.
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Yau Wallace W. (Wilmington DE), Viscosity detection method for liquid chromatography systems with carrier liquids having time-varying viscosity.
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Holm-Kennedy James W. (Honolulu HI) McArthur Scot P. (Honolulu HI), Viscosity sensor.
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