公开(公告)号：US20080197863A1

公开(公告)日：2008-08-21

申请号：US12031880

申请日：2008-02-15

申请人： Yingjie Lin ,  Su-Chee Simon Wang ,  Norberto Hernandez Resendiz

发明人： Yingjie Lin ,  Su-Chee Simon Wang ,  Norberto Hernandez Resendiz

IPC分类号： G01R27/00

CPC分类号： G01N33/2852

摘要： 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. The induced signal is therefore wholly representative of the imaginary component attributable to a capacitance of the sensing element in sensing relation with the fuel, which in turn is dependent on the dielectric constant (and thus ethanol concentration) of the fuel blend itself. The processing circuit is configured to sample the induced signal in response to the trigger signal and produce the output signal. The synchronization scheme provides for a simplified circuit arrangement since there is o need to decompose a signal combining real and imaginary components.

摘要翻译： 传感器电路耦合到感测元件，用于确定适用于在确定汽油/乙醇混合燃料中的乙醇浓度时使用介电常数的燃料的性质，例如介电常数。 该电路包括激励电压信号发生器，同步触发和被配置为产生表示燃料特性（介电常数）的输出信号的处理电路。 激励电压信号被施加到感测元件以产生通过其的感应电流信号。 同步触发被配置为当激励电压信号跨越零伏特时产生触发信号，此时感应电流信号的实数（电阻）分量为零。 因此，感应信号完全代表归因于传感元件在与燃料的关系中的电容的虚部，其反过来取决于燃料混合物本身的介电常数（因此取决于乙醇浓度）。 处理电路被配置为响应于触发信号对感应信号进行采样并产生输出信号。 同步方案提供简化的电路布置，因为需要分解组合实部和虚部的信号。

公开(公告)号：US07659731B2

公开(公告)日：2010-02-09

申请号：US12031880

申请日：2008-02-15

申请人： Yingjie Lin ,  Su-Chee Simon Wang ,  Norberto Hernandez Resendiz

发明人： Yingjie Lin ,  Su-Chee Simon Wang ,  Norberto Hernandez Resendiz

IPC分类号： G01R27/08 ,  G01N27/42

CPC分类号： G01N33/2852

摘要： 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.

摘要翻译： 传感器电路耦合到感测元件，用于确定燃料的性质，例如介电常数。 电路包括激励电压信号发生器，同步触发器和被配置为产生指示燃料特性的输出信号的处理电路。 激励信号被施加到感测元件以产生感应电流信号。 当激励信号穿过零伏特时，同步触发器产生触发信号，此时感应电流信号的实数（电阻）分量为零。 因此，感应信号完全代表归因于燃料电容的虚分量，其反过来取决于燃料混合物的介电常数（因此取决于乙醇浓度）。 处理电路被配置为响应于触发信号对感应信号进行采样并产生输出信号。

公开(公告)号：US06712503B2

公开(公告)日：2004-03-30

申请号：US10117833

申请日：2002-04-08

申请人： Yingjie Lin ,  Han-Sheng Lee ,  Su-Chee Simon Wang

发明人： Yingjie Lin ,  Han-Sheng Lee ,  Su-Chee Simon Wang

IPC分类号： G01N2500

CPC分类号： G01N33/2829 ,  F02D19/0628 ,  F02D19/0634 ,  F02D19/0649 ,  F02D19/0665 ,  F02D41/0025 ,  F02D2200/0611 ,  Y02T10/36

摘要： 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. The stored correlation equations are applied to the measured temperatures to provide the required temperature data to calculate the DI value for the fuel in the fuel tank.

摘要翻译： 根据行业标准ASTM D86测试，通过容器加热时以各种蒸发百分比提供特定温度数据，从容器中的燃料样品中提供计算燃料驱动性指数（DI）值的方法。 特定的温度数据提供DI值。 在能够保持预定体积的燃料的传感器上测试相同的燃料样本。 以与传感器加热相同的蒸发百分比来监测温度数据。 在相对于来自ASTM D86测试的特定温度数据和存储在车辆的发动机控制器中的传感器的温度数据之间，数学上计算相关方程。 来自燃料箱的燃料通过加热具有预定体积燃料的类似的车载传感器并根据传感器中剩余燃料的函数来测量温度数据来测试。 将存储的相关方程应用于测量的温度以提供所需的温度数据以计算燃料箱中的燃料的DI值。

公开(公告)号：US07201051B2

公开(公告)日：2007-04-10

申请号：US10994154

申请日：2004-11-19

申请人： Su-Chee Simon Wang ,  Ming-Cheng Wu ,  Yingjie Lin ,  Taeyoung Han ,  Mark K. Krage

发明人： Su-Chee Simon Wang ,  Ming-Cheng Wu ,  Yingjie Lin ,  Taeyoung Han ,  Mark K. Krage

IPC分类号： G01F23/00

CPC分类号： F01M1/18

摘要： 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.

公开(公告)号：US06895807B2

公开(公告)日：2005-05-24

申请号：US10948604

申请日：2004-09-23

申请人： Taeyoung Han ,  Su-Chee Simon Wang ,  Mark K Krage ,  Yingjie Lin

发明人： Taeyoung Han ,  Su-Chee Simon Wang ,  Mark K Krage ,  Yingjie Lin

IPC分类号： F01M11/10 ,  G01N33/26 ,  G01N11/00

CPC分类号： F01M11/10 ,  F01M2011/1446 ,  F01M2011/1473 ,  F01M2011/148

摘要： 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.

公开(公告)号：US06693444B2

公开(公告)日：2004-02-17

申请号：US10199651

申请日：2002-07-19

申请人： Yingjie Lin ,  Su-Chee Simon Wang

发明人： Yingjie Lin ,  Su-Chee Simon Wang

IPC分类号： G01R2708

CPC分类号： G01N27/02 ,  G01N33/2835

摘要： 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.

摘要翻译： 用于测量燃料的复阻抗的装置包括与燃料接触的感测元件。 感测元件以预定频率的激励信号激励，优选地在10kHz至100kHz的范围内。 感应信号用于产生指示复阻抗的相位和幅度的相位和幅度信号。 从相位和幅度信号可以计算燃料的电阻和电容。 提供电子装置的温度变化的校正，以及用于调节不同含量的燃料（例如不同乙醇含量）所需的幅度信号的分辨率的可变控制。

公开(公告)号：US06901788B2

公开(公告)日：2005-06-07

申请号：US10423308

申请日：2003-04-25

申请人： Taeyoung Han ,  Su-Chee Simon Wang ,  Mark K Krage ,  Yingjie Lin

发明人： Taeyoung Han ,  Su-Chee Simon Wang ,  Mark K Krage ,  Yingjie Lin

IPC分类号： F01M11/10 ,  G01N33/26 ,  G01N11/00

CPC分类号： F01M11/10 ,  F01M2011/1446 ,  F01M2011/1473 ,  F01M2011/148

摘要： 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.

公开(公告)号：US06664796B2

公开(公告)日：2003-12-16

申请号：US09961699

申请日：2001-09-24

申请人： Su-Chee Simon Wang ,  Yingjie Lin

发明人： Su-Chee Simon Wang ,  Yingjie Lin

IPC分类号： G01R2726

CPC分类号： G01N33/2847

摘要： 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.

摘要翻译： 一种用于确定含乙醇的燃料中的水污染水平的方法，包括测定燃料的乙醇浓度; 感测燃料的阻力; 确定燃料的阻力极限; 并比较阻力与电阻极限以提供水污染的水平。 优选通过将测量的电容与查找表中的已知值进行比较来获得乙醇浓度。 电阻极限可以通过将对应于乙醇浓度的电阻乘以报警分数来确定。 通过在已知的水污染水平下的电阻值的查找表获得电阻。 当测量的电阻等于或低于电阻极限时，发生报告。 或者，测量的电阻相对于没有水污染的电阻被归一化，并且当-1.6667 *归一化电阻+ 1.6667接近1.0时报告。

公开(公告)号：US06590402B2

公开(公告)日：2003-07-08

申请号：US09969222

申请日：2001-10-02

申请人： Su-Chee Simon Wang ,  Yingjie Lin

发明人： Su-Chee Simon Wang ,  Yingjie Lin

IPC分类号： G01R2708

CPC分类号： G01N33/2888 ,  G01N27/06

摘要： 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.

摘要翻译： 发动机油污染传感器包括第一感测电极和第二感测电极。 在电极之间建立感测区域。 传感器定位在油底壳中，使得传感器完全浸没在发动机机油中。 微处理器连接到感测电极并且包括用于确定防冻剂是否分散在发动机机油中的程序。

公开(公告)号：US06564624B2

公开(公告)日：2003-05-20

申请号：US09924873

申请日：2001-08-08

申请人： Yingjie Lin ,  Han-Sheng Lee ,  Su-Chee Simon Wang ,  David Kay Lambert

发明人： Yingjie Lin ,  Han-Sheng Lee ,  Su-Chee Simon Wang ,  David Kay Lambert

IPC分类号： G01M1500

CPC分类号： G01N33/2829 ,  G01N27/226

摘要： 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.

摘要翻译： 用于通过估计其可驾驶性指数来测量液体汽油的挥发性的传感器和方法包括传感元件，其具有布置成保持预定体积的汽油的交叉排列的导电电容器板，其挥发性将被测量。 当发动机运转时，感测元件安装在车辆中以与汽油流接触，使得当发动机关闭时，一定量的汽油被吸入导电板内并保持在导电板内。 感测元件连接到用于测量感测元件的电容变化的电路作为时间的函数，同时随着时间的推移，感测元件保持的汽油体积蒸发，同时测量感测元件的温度变化。 通过电路获得的测量值用于估计汽油的驾驶性能指数。