Patents by Inventor Su-Chee Simon Wang
Su-Chee Simon Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110246006Abstract: An electric propulsion system for a vehicle includes an electric motor operatively connected to a wheel of the vehicle. The system includes a first energy storage electrically connected to the electric motor to provide electric energy to the electric motor. The first energy storage is characterized by a first energy capacity and a first power capacity. The system includes a second energy storage characterized by a second energy capacity and a second power capacity. The second energy capacity is less than the first energy capacity and the second power capacity is greater than the first power capacity. The system includes a control module that detects a request of power for the vehicle and electrically connects the second energy storage to the electric motor to provide electric power based on the request.Type: ApplicationFiled: April 2, 2010Publication date: October 6, 2011Inventors: Ching-Li Jimmy Wong, Su-Chee Simon Wang, William Chin-Woei Lin
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Patent number: 7964324Abstract: A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3 in acetonitrile is imbibed into a perovskite cathode fabricated on a electrolyte layer supported by an anode, defining an SOFC cell. The cathode imbibition may be repeated a plurality of times as may be needed depending upon the thickness of the cathode. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.5% and about 10%. The cathode is then fired in air at high temperature to drive off the acetonitrile and to reduce the silver ions to metallic silver. In this way, cathode electrical resistance may be reduced by as much as 52%.Type: GrantFiled: June 1, 2009Date of Patent: June 21, 2011Assignee: Delphi Technologies, Inc.Inventors: Su-Chee Simon Wang, Kailash Chandra Jain, Joseph M. Keller, Rick D. Kerr
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Publication number: 20100143761Abstract: A method for improving performance of an SOFC by impregnation of the cathode with metallic silver. A solution of AgNO3 in acetonitrile is imbibed into a perovskite cathode fabricated on a electrolyte layer supported by an anode, defining an SOFC cell. The cathode imbibition may be repeated a plurality of times as may be needed depending upon the thickness of the cathode. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.5% and about 10%. The cathode is then fired in air at high temperature to drive off the acetonitrile and to reduce the silver ions to metallic silver. In this way, cathode electrical resistance may be reduced by as much as 52%.Type: ApplicationFiled: June 1, 2009Publication date: June 10, 2010Inventors: Su-Chee Simon Wang, Kailash Chandra Jain, Joseph M. Keller, Rick D. Kerr
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Patent number: 7659731Abstract: A sensor circuit is coupled to a sensing element for determining a property, such as a dielectric constant, of a fuel. The circuit includes an excitation voltage signal generator, a synchronization trigger and a processing circuit configured to generate an output signal indicative of the fuel property. The excitation signal is applied to the sensing element to produce an induced current signal. The synchronization trigger generates a trigger signal when the excitation signal crosses zero volts, at which time the real (resistive) component of the induced current signal is zero. The induced signal is therefore wholly representative of the imaginary component attributable to a capacitance of the fuel, which in turn is dependent on the dielectric constant (and thus ethanol concentration) of the fuel blend. The processing circuit is configured to sample the induced signal in response to the trigger signal and produce the output signal.Type: GrantFiled: February 15, 2008Date of Patent: February 9, 2010Assignee: Delphi Technologies, Inc.Inventors: Yingjie Lin, Su-Chee Simon Wang, Norberto Hernandez Resendiz
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Publication number: 20080197863Abstract: A sensor circuit is coupled to a sensing element for determining a property, such as a dielectric constant, of a fuel suitable where the dielectric constant is used in determining a concentration of ethanol in the gasoline/ethanol blended fuel. The circuit includes an excitation voltage signal generator, a synchronization trigger and a processing circuit configured to generate an output signal indicative of the fuel property (dielectric constant). The excitation voltage signal is applied to the sensing element to produce an induced current signal therethrough. The synchronization trigger is configured to generate a trigger signal when the excitation voltage signal crosses zero volts, at which time the real (resistive) component of the induced current signal is zero.Type: ApplicationFiled: February 15, 2008Publication date: August 21, 2008Inventors: Yingjie Lin, Su-Chee Simon Wang, Norberto Hernandez Resendiz
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Patent number: 7201051Abstract: A method for detecting fuel leaking into an oil pan containing oil which is used to lubricate an internal combustion engine utilizes a plurality of sensors. The method includes the step of measuring a plurality of parameters of the oil using each of the plurality of sensors to create measured values. A fuel leakage value is calculated incorporating each of the measured values. The method then determines when the fuel leakage value exceeds a predetermined value.Type: GrantFiled: November 19, 2004Date of Patent: April 10, 2007Assignee: Delphi Technologies, Inc.Inventors: Su-Chee Simon Wang, Ming-Cheng Wu, Yingjie Lin, Taeyoung Han, Mark K. Krage
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Patent number: 6911830Abstract: A method by which contaminant (soot) content in Diesel engine oil is determined using electrical conductivity measurements of the Diesel oil at a high frequency, or by which contaminant (soot and/or water and/or anitfreeze) content is determined using the ratio of electrical conductivity measurements of the Diesel oil at a high frequency to the electrical conductivity measurements of the Diesel oil at a low frequency. Both the conductivity ratio and the high frequency conductivity are essentially independent of the brand of oil. High frequency is defined to be above 2 MHz whereas low frequency is defined to be D.C. to about 1 kHz.Type: GrantFiled: August 22, 2002Date of Patent: June 28, 2005Assignee: Delphi Technologies, Inc.Inventors: Joseph Pierre Heremans, Su-Chee Simon Wang, Thaddeus Schroeder, Louis L. Nagy
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Patent number: 6901788Abstract: An oil change sensing system for an internal combustion engine, having an oil pressure sensor adapted to provide an oil pressure signal to an engine control module; an oil temperature sensor adapted to provide an oil temperature signal to the engine control module; wherein the engine control module comprises an algorithm which determines the oil's viscosity by using the measured oil temperature and oil pressure and the determined oil viscosity and a fresh oil viscosity are used to determine whether the oil is in a preferred operating range.Type: GrantFiled: April 25, 2003Date of Patent: June 7, 2005Assignee: Delphi Technologies, Inc.Inventors: Taeyoung Han, Su-Chee Simon Wang, Mark K Krage, Yingjie Lin
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Patent number: 6895807Abstract: An oil change sensing system for an internal combustion engine, having an oil pressure sensor adapted to provide an oil pressure signal to an engine control module; an oil temperature sensor adapted to provide an oil temperature signal to the engine control module; wherein the engine control module comprises an algorithm which determines the oil's viscosity by using the measured oil temperature and oil pressure and the determined oil viscosity and a fresh oil viscosity are used to determine whether the oil is in a preferred operating range.Type: GrantFiled: September 23, 2004Date of Patent: May 24, 2005Assignee: Delphi Technologies, Inc.Inventors: Taeyoung Han, Su-Chee Simon Wang, Mark K Krage, Yingjie Lin
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Patent number: 6810717Abstract: Activation energy, W, is determined from oil conductivity measurements to thereby provide engine oil condition from a known relationship between viscosity and W. Changes of W at a given temperature as the oil ages are reflective of changes in viscosity of the oil at the same given temperature, wherein changes in W at different temperatures are reflective of changes of viscosity at those respective temperatures as the oil ages. To determine viscosity, the temperature dependence of the oil's conductivity is measured to deduce the value of W at a given temperature. W is monitored as the oil ages. W may also be determined through the ratio of the oil conductivities at two different temperatures by techniques well known in the art by which the viscosity may be determined as the oil ages.Type: GrantFiled: March 10, 2003Date of Patent: November 2, 2004Assignee: Delphi Technologies, Inc.Inventors: Joseph Pierre Heremans, Su-Chee Simon Wang
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Publication number: 20040211246Abstract: An oil change sensing system for an internal combustion engine, having an oil pressure sensor adapted to provide an oil pressure signal to an engine control module; an oil temperature sensor adapted to provide an oil temperature signal to the engine control module; wherein the engine control module comprises an algorithm which determines the oil's viscosity by using the measured oil temperature and oil pressure and the determined oil viscosity and a fresh oil viscosity are used to determine whether the oil is in a preferred operating range.Type: ApplicationFiled: April 25, 2003Publication date: October 28, 2004Inventors: Taeyoung Han, Su-Chee Simon Wang, Mark K. Krage, Yingjie Lin
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Publication number: 20040177677Abstract: Activation energy, W, is determined from oil conductivity measurements to thereby provide engine oil condition from a known relationship between viscosity and W. Changes of W at a given temperature as the oil ages are reflective of changes in viscosity of the oil at the same given temperature, wherein changes in W at different temperatures are reflective of changes of viscosity at those respective temperatures as the oil ages. To determine viscosity, the temperature dependence of the oil's conductivity is measured to deduce the value of W at a given temperature. W is monitored as the oil ages. W may also be determined through the ratio of the oil conductivities at two different temperatures by techniques well known in the art by which the viscosity may be determined as the oil ages.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Inventors: Joseph Pierre Heremans, Su-Chee Simon Wang
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Patent number: 6712503Abstract: A method to calculate a fuel driveability index (DI) value is provided from a sample of fuel in a container as tested by the industry standard ASTM D86 test providing particular temperature data at various percentages of evaporation as the container is heated. The particular temperature data provides a DI value. The same sample of fuel is tested on a sensor capable of retaining a predetermined volume of fuel. Temperature data is monitored at the same percentages of evaporation as the sensor is being heated. Correlation equations are mathematically calculated between the temperature data from the sensor relative to the particular temperature data from the ASTM D86 test and stored in the engine controller of a vehicle. The fuel from the fuel tank is tested by heating a similar on-board sensor having the predetermined volume of fuel and measuring the temperature data as a function of the remaining fuel in the sensor.Type: GrantFiled: April 8, 2002Date of Patent: March 30, 2004Assignee: Delphi Technologies, Inc.Inventors: Yingjie Lin, Han-Sheng Lee, Su-Chee Simon Wang
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Publication number: 20040036487Abstract: A method by which contaminant (soot) content in Diesel engine oil is determined using electrical conductivity measurements of the Diesel oil at a high frequency, or by which contaminant (soot and/or water and/or anitfreeze) content is determined using the ratio of electrical conductivity measurements of the Diesel oil at a high frequency to the electrical conductivity measurements of the Diesel oil at a low frequency. Both the conductivity ratio and the high frequency conductivity are essentially independent of the brand of oil. High frequency is defined to be above 2 MHz whereas low frequency is defined to be D.C. to about 1 kHz.Type: ApplicationFiled: August 22, 2002Publication date: February 26, 2004Inventors: Joseph Pierre Heremans, Su-Chee Simon Wang, Thaddeus Schroeder, Louis L. Nagy
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Patent number: 6693444Abstract: An apparatus for measuring the complex impedance of a fuel includes a sensing element in contact with the fuel. The sensing element is excited with an excitation signal of a predetermined frequency, preferably in a range of 10 kHz to 100 kHz. The induced signal is used to generate a phase and a magnitude signal indicative of the phase and magnitude of the complex impedance. From the phase and magnitude signals, the resistance and capacitance of the fuel can be calculated. Correction for variations in temperature of the electronics is provided, as is variable control to adjust the resolution of the magnitude signal required by fuels of varying content, such as varying ethanol content.Type: GrantFiled: July 19, 2002Date of Patent: February 17, 2004Assignee: Delphi Technologies, Inc.Inventors: Yingjie Lin, Su-Chee Simon Wang
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Publication number: 20040012399Abstract: An apparatus for measuring the complex impedance of a fuel includes a sensing element in contact with the fuel. The sensing element is excited with an excitation signal of a predetermined frequency, preferably in a range of 10 kHz to 100 kHz. The induced signal is used to generate a phase and a magnitude signal indicative of the phase and magnitude of the complex impedance. From the phase and magnitude signals, the resistance and capacitance of the fuel can be calculated. Correction for variations in temperature of the electronics is provided, as is variable control to adjust the resolution of the magnitude signal required by fuels of varying content, such as varying ethanol content.Type: ApplicationFiled: July 19, 2002Publication date: January 22, 2004Inventors: Yingjie Lin, Su-Chee Simon Wang
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Patent number: 6664796Abstract: A method for determining a level of water contamination in a fuel containing ethanol, including determining the ethanol concentration of the fuel; sensing the resistance of the fuel; determining a resistance limit of the fuel; and comparing the resistance to the resistance limit to provide the level of water contamination. Ethanol concentration is preferably obtained by comparing a measured capacitance to known values in a look-up table. The resistance limit can be determined by multiplying a resistance corresponding to the ethanol concentration by an alarm fraction. The resistance is obtained by a look-up table of resistance values at known water contamination levels. Reporting occurs when the measured resistance is at or below the resistance limit. Alternatively, the measured resistance is normalized with respect to the resistance with no water contamination and reporting occurs when −1.6667*normalized resistance+1.6667 approaches 1.0.Type: GrantFiled: September 24, 2001Date of Patent: December 16, 2003Assignee: Delphi Technologies, Inc.Inventors: Su-Chee Simon Wang, Yingjie Lin
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Publication number: 20030189969Abstract: A method to calculate a fuel driveability index (DI) value is provided from a sample of fuel in a container as tested by the industry standard ASTM D86 test providing particular temperature data at various percentages of evaporation as the container is heated. The particular temperature data provides a DI value. The same sample of fuel is tested on a sensor capable of retaining a predetermined volume of fuel. Temperature data is monitored at the same percentages of evaporation as the sensor is being heated. Correlation equations are mathematically calculated between the temperature data from the sensor relative to the particular temperature data from the ASTM D86 test and stored in the engine controller of a vehicle. The fuel from the fuel tank is tested by heating a similar on-board sensor having the predetermined volume of fuel and measuring the temperature data as a function of the remaining fuel in the sensor.Type: ApplicationFiled: April 8, 2002Publication date: October 9, 2003Inventors: Yingjie Lin, Han-Sheng Lee, Su-Chee Simon Wang
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Patent number: 6590402Abstract: An engine oil contamination sensor includes a first sensing electrode and a second sensing electrode. A sensing area is established between the electrodes. The sensor is oriented in an oil pan such that the sensing are is completely submerged in engine oil. A microprocessor is connected to the sensing electrodes and includes a program for determining whether antifreeze is dispersed in the engine oil.Type: GrantFiled: October 2, 2001Date of Patent: July 8, 2003Assignee: Delphi Technologies, Inc.Inventors: Su-Chee Simon Wang, Yingjie Lin
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Patent number: 6564624Abstract: A sensor and method for measuring the volatility of liquid gasoline by estimating its driveability index includes a sensing element having an interdigitated array of electrically conducting capacitor plates arranged to retain a predetermined volume of gasoline, the volatility of which is to be measured. The sensing element is mounted in a vehicle to be in contact with the flow of gasoline while the engine is running so that a volume certain of gasoline is drawn between and remains within the electrically conducting plates when the engine is turned off. The sensing element is connected to circuitry used to measure the change in capacitance of the sensing element as a function of time while simultaneously measuring the temperature change of the sensing element as the volume of gasoline retained by the sensing element is evaporated over time. The measurements obtained by the circuitry are used in estimating the drivability index of the gasoline.Type: GrantFiled: August 8, 2001Date of Patent: May 20, 2003Assignee: Delphi Technologies, Inc.Inventors: Yingjie Lin, Han-Sheng Lee, Su-Chee Simon Wang, David Kay Lambert