Applications of Tuning Fork Resonators for Engine Oil, Fuel, Biodiesel Fuel and Urea Quality Monitoring

Milpied, Jean; Uhrich, Mark; Patissier, Bruno; Bernasconi, Lisa

doi:10.4271/2009-01-2639

Cited by 15 publications

(8 citation statements)

References 2 publications

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“…Sensor systems researched have included infrared [2][3][4], hyperspectral [5], resonating [6][7][8][9][10], and electrochemical [11][12][13][14][15][16]. These sensors have attempted to monitor oil conditions such as viscosity [7,8,12,17]; acidity [6,[14][15][16]18]; fuel, water, or antifreeze contamination [3]; and antioxidants [11,13].…”

Section: Introductionmentioning

confidence: 99%

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Distinguishing Gasoline Engine Oils of Different Viscosities Using Terahertz Time-Domain Spectroscopy

Adbul-Munaim

Reuter

Koch

et al. 2015

J Infrared Milli Terahz Waves

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THz-TDS in the range of 0.5-2.0 THz was evaluated for distinguishing among gasoline engine oils of three different grades from the same manufacturer. Absorption coefficient showed limited potential and only distinguished (p < 0.05) the 20W-50 grade from the other two grades in the 1.7-2.0 THz range. Refractive index data demonstrated relatively flat and consistently spaced curves for the three oil grades. ANOVA results confirmed a highly significant difference (p < 0.0001) in refractive index among each of the three oils across the 0.5 -2.0 THz range. Linear regression was applied to refractive index data at 0.25 THz intervals from 0.5 -2.0 THz to predict kinematic viscosity. All seven linear regression models, intercepts, and refractive index coefficients were highly significant (p < 0.0001). All models had a similar fit with R 2 ranging from 0.9773 to 0.9827 and RMSE ranging from 6.33 to 7.75.The refractive indices at 1.25 THz produced the best fit. The refractive indices of these oil samples were promising for identification and distinction of oil grades.

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Section: Introductionmentioning

confidence: 99%

“…These sensors have attempted to monitor oil conditions such as viscosity [7,8,12,17]; acidity [6,[14][15][16]18]; fuel, water, or antifreeze contamination [3]; and antioxidants [11,13]. Some combination of the above sensors was preferred to meet the requirements of oil condition monitoring [9,17].…”

Section: Introductionmentioning

confidence: 99%

Distinguishing Gasoline Engine Oils of Different Viscosities Using Terahertz Time-Domain Spectroscopy

Adbul-Munaim

Reuter

Koch

et al. 2015

J Infrared Milli Terahz Waves

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show abstract

“…The oil conditions these sensors attempted to monitor were acidity (Agoston et al, 2005;Moon et al, 2006;Soleimani et al, 2013;Wang et al, 1994;Wang, 2002), antioxidants (Cheek and Mowery, 1989;Price and Clarke, 1991), viscosity (Duchowski and Mannebach, 2006;Jakoby et al, 2003;Schmitigal and Moyer, 2005), and contaminants of fuel, water, or antifreeze (Borin and Poppi, 2005). No single sensor has been preferred, and researchers have indicated that some combination would be required for monitoring oil condition (Milpied et al, 2010;Schmitigal and Moyer, 2005). To date, engine manufacturers have not widely implemented oil condition monitoring sensors.…”

mentioning

confidence: 99%

“…Sensor systems studied have included electromechanical (Cheek and Mowery, 1989;Duchowski and Mannebach, 2006;Price and Clarke, 1991;Soleimani et al, 2013;Wang et al, 1994;Wang, 2002) and resonating sensors (Agoston et al, 2005;Jakoby et al, 2003;Milpied et al, 2010;Mohammed and Hassan, 2013). Infrared (Blanco et al, 1998;Borin and Poppi, 2005;Kasberger et al, 2011) and hyperspectral (Lulu et al, 2014) spectroscopy techniques have also been used.…”

mentioning

confidence: 99%

Using Terahertz Time-Domain Spectroscopy to Discriminate among Water Contamination Levels in Diesel Engine Oil

2016

Trans. ASABE

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“…Such applications include monitoring automotive fluids, particularly the lubrication fluid properties as they change due to oxidation, ageing, accumulation of combustion byproducts, etc. [18,19] and oil well downhole fluid monitoring [20,21] as the properties of fluid change on its way to the surface.…”

Section: Resonator-based Fluid Propertiesmentioning

confidence: 99%

Improving Performance and Versatility of Systems Based on Single-Frequency DFT Detectors Such as AD5933

Matsiev

2014

Electronics

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Abstract:Turning grand concepts such as the Internet of Things (IoT) and Smart Cities into reality requires the development and deployment of a wide variety of computing devices incorporated into the Internet infrastructure. Unsupervised sensing is the cornerstone capability that these devices must have to perform useful functions, while also having low cost of acquisition and ownership, little energy consumption and a small footprint. Impedimetric sensing systems based on the so-called single-frequency DFT detectors possess many of these desirable attributes and are often introduced in remote monitoring and wearable devices. This study presents new methods of improving performance of such detectors. It demonstrates that the main source of systematic errors is the discontinuous test phasor causing the crosstalk between the in-phase and quadrature outputs and the leakage of the input signal. The study derives expressions for these errors as a function of the number of samples and operating frequency, and provides methods for correction. The proposed methods are applied to the operation of a practical device-a network analyzer integrated circuit AD5933-and discussed in detail. These methods achieve complete elimination of leakage errors and expansion of the low limit of the operation frequency range by nearly two decades without additional hardware.

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Applications of Tuning Fork Resonators for Engine Oil, Fuel, Biodiesel Fuel and Urea Quality Monitoring

Cited by 15 publications

References 2 publications

Distinguishing Gasoline Engine Oils of Different Viscosities Using Terahertz Time-Domain Spectroscopy

Distinguishing Gasoline Engine Oils of Different Viscosities Using Terahertz Time-Domain Spectroscopy

Using Terahertz Time-Domain Spectroscopy to Discriminate among Water Contamination Levels in Diesel Engine Oil

Improving Performance and Versatility of Systems Based on Single-Frequency DFT Detectors Such as AD5933

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