公开(公告)号：EP1283418A3

公开(公告)日：2005-03-23

申请号：EP02077892.4

申请日：2002-07-17

Applicant: Delphi Technologies, Inc.

Inventor： Lin, Yingjie ,  Lee, Han-Sheng ,  Wang, Su-Chee ,  Lambert, David K.

IPC: G01N27/22

CPC classification number: G01N33/2829 ,  G01N27/226

Abstract: A sensor (10) and method for measuring the volatility of liquid gasoline by estimating its driveability index includes a sensing element (11) having an interdigitated array of electrically conducting capacitor plates (28, 42) arranged to retain a predetermined volume of gasoline, the volatility of which is to be measured. The sensing element (11) 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 (28, 42) when the engine is turned off. The sensing element (11) is connected to circuitry (54, 65) used to measure the change in capacitance of the sensing element (11) as a function of time while simultaneously measuring the temperature change of the sensing element (11) as the volume of gasoline retained by the sensing element (11) is evaporated over time. The measurements obtained by the circuitry (54, 65) are used in estimating the drivability index of the gasoline.

公开(公告)号：EP1283418A2

公开(公告)日：2003-02-12

申请号：EP02077892.4

申请日：2002-07-17

Applicant: Delphi Technologies, Inc.

Inventor： Lin, Yingjie ,  Lee, Han-Sheng ,  Wang, Su-Chee ,  Lambert, David K.

IPC: G01N27/22

CPC classification number: G01N33/2829 ,  G01N27/226

Abstract: A sensor (10) and method for measuring the volatility of liquid gasoline by estimating its driveability index includes a sensing element (11) having an interdigitated array of electrically conducting capacitor plates (28, 42) arranged to retain a predetermined volume of gasoline, the volatility of which is to be measured. The sensing element (11) 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 (28, 42) when the engine is turned off. The sensing element (11) is connected to circuitry (54, 65) used to measure the change in capacitance of the sensing element (11) as a function of time while simultaneously measuring the temperature change of the sensing element (11) as the volume of gasoline retained by the sensing element (11) is evaporated over time. The measurements obtained by the circuitry (54, 65) are used in estimating the drivability index of the gasoline.

Abstract translation: 传感器（10）和通过估计其可驾驶性指数来测量液体汽油的挥发性的方法包括：传感元件（11），其具有布置成保持预定体积汽油的导电电容器板（28,42）的叉指排列， 其波动性将被测量。 当发动机运行时，感测元件（11）安装在车辆中以与汽油流接触，使得当发动机运行时，一定量的汽油在导电板（28,42）内被吸入并保持在导电板（28,42）内 已关闭 感测元件（11）连接到用于测量感测元件（11）的电容变化作为时间的函数的电路（54,65），同时测量感测元件（11）的温度变化，作为体积 由汽油保持的汽油随时间蒸发。 通过电路（54,65）获得的测量值用于估计汽油的驾驶性能指数。