Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-06-20
2006-06-20
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S708000, C324S655000
Reexamination Certificate
active
07064562
ABSTRACT:
Certain characteristics of Diesel engine lubrication oil are determined. A sensor formed as a capacitor is immersed in the oil. An inductor is in series with the sensor, and a high frequency voltage with a varying frequency is applied to the resonance circuit formed by the inductor and capacitor. Resonance is sensed, and the resonant frequency and/or the resonant current are used to determine the soot content and/or the dielectric constant of the oil. The electronics temperature can be used to compensate for temperature variations in the resonant frequency and the electronics temperature and the oil temperature can be used to compensate for temperature variations in the resonant current. The compensated values are preferably used in the determination of soot content and the dielectric constant.
REFERENCES:
patent: 2720624 (1955-10-01), Burton et al.
patent: 3746974 (1973-07-01), Stoakes et al.
patent: 4112744 (1978-09-01), Tassano
patent: 4281533 (1981-08-01), Eesley et al.
patent: 4345202 (1982-08-01), Nagy et al.
patent: 4503384 (1985-03-01), Nagy et al.
patent: 4646070 (1987-02-01), Yasuhara et al.
patent: 4733556 (1988-03-01), Meitzler et al.
patent: 4926120 (1990-05-01), Veronesi et al.
patent: 5225783 (1993-07-01), Suzuki et al.
patent: 5270663 (1993-12-01), Sano et al.
patent: 5604441 (1997-02-01), Freese, V et al.
patent: 5656767 (1997-08-01), Garvey, III et al.
patent: 5824889 (1998-10-01), Park et al.
patent: 6508100 (2003-01-01), Berndorfer
patent: 6509749 (2003-01-01), Buelna et al.
patent: 6535001 (2003-03-01), Wang
patent: 6557396 (2003-05-01), Ismail et al.
patent: 6564126 (2003-05-01), Lin et al.
patent: 6867603 (2005-03-01), Nicholson et al.
patent: 2004/0036487 (2004-02-01), Heremans et al.
patent: 2004/0108859 (2004-06-01), Nicholson et al.
patent: 2004/0239344 (2004-12-01), Hu
patent: WO 9846985 (1998-10-01), None
“Standard Test Method for Evaluation of Diesel Engine Oils in T-8 Diesel Engine,” ASTM, Designation: D 5967-99, An American National Standard, Aug. 1999.
Ian White et al, “Effect of Bulk Electrical Conductivity on TDR Measurement of Water Content in Porous Media,” Symposium and Workshop on Time Domain Reflectometry in Environmental, Infrastructure, and Mining Applications held at Northwestern University, Evanston, Illinois, Sep. 17-19, 1994 (Washington DC: US Bureau of Mines, 1994) pp. 294-308.
George S. Saloka et al, “A capacitive oil deterioration sensor,” Electronic Material and Devices Dept., Ford Motor Co., SAE No. 910497.
Eckard Irion et al, “Oil-Quality Prediction and Oil-Level Detection with the TEMIC QLT-Sensor Leads to Variable Maintenance Intervals,” SAE No. 970847, 1997.
Peter E.M. Frere et al, “An On-Line Oil Viscosity Sensor,” SAE No. 970848, 1997.
Lin Yingjie
Salvador Nicte
Deb Anjan
Delphi Technologies Inc.
Funke Jimmy L.
LandOfFree
Temperature compensation method for soot sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature compensation method for soot sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensation method for soot sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3635937