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    • 42. 发明授权
    • Method and apparatus for determining an approximation for fuel volatility on-board a vehicle
    • 用于确定车载燃料挥发性的近似值的方法和装置
    • US06880392B2
    • 2005-04-19
    • US10150675
    • 2002-05-17
    • Han-Sheng LeeDavid K. LambertCharles Robert HarringtonRick Daniel Kerr
    • Han-Sheng LeeDavid K. LambertCharles Robert HarringtonRick Daniel Kerr
    • F02D41/00F02D41/06G01M19/00
    • F02D41/0025F02D19/0628F02D19/087F02D41/06F02D2200/0611Y02T10/36
    • An apparatus and method for determining an approximation to a measure of the volatility of fuel on-board a vehicle having an internal combustion engine. The method includes the steps of measuring at least one characteristic of the fuel corresponding to a temperature of the fuel, a volume of the fuel, and a concentration of oxygenates within the fuel; determining an approximation of the a measure of the volatility of the sample volume of fuel using a linear function based on the at least one measured characteristic of the fuel corresponding to temperature, volume, and concentration of oxygenates of the fuel. Preferably, at least one temperature measurement is associated with a predetermined volume of the sample as the sample is evaluated. The method can include determining whether a fuel contains ethanol, and if not, whether the fuel is a winter blend of fuel or a summer blend of fuel. The method to determine whether ethanol is present can include the steps of bringing the fuel into contact with a sensing element; measuring a characteristic of the fuel corresponding to concentration of oxygenates, such as the change in capacitance or resistance of the sensing element; and calculating the dielectric constant or the conductivity of the sample respectively. The method to determine the type of non-ethanol containing fuel can be based on two temperature measurements taken at two predetermined volumes during the evaporation process.
    • 一种用于确定对具有内燃机的车辆上的燃料的挥发性的量度的近似值的装置和方法。 该方法包括以下步骤:测量与燃料的温度,燃料的体积以及燃料内的含氧化合物的浓度对应的燃料的至少一种特性; 使用基于对应于燃料的含氧化合物的温度,体积和浓度的燃料的至少一个测量特性的线性函数来确定燃料的样品体积的挥发性的量度的近似值。 优选地,当评估样品时,至少一个温度测量与样品的预定体积相关联。 该方法可以包括确定燃料是否含有乙醇,如果不是,燃料是燃料的混合物还是燃料的夏季混合物。 确定乙醇是否存在的方法可以包括使燃料与感测元件接触的步骤; 测量对应于含氧化合物浓度的燃料的特性,例如感测元件的电容或电阻的变化; 并分别计算样品的介电常数或电导率。 确定含有非乙醇的燃料的类型的方法可以基于在蒸发过程期间以两个预定体积进行的两次温度测量。
    • 47. 发明申请
    • Chemical vapor sensor having an active and a passive measurement mode
    • 具有主动和被动测量模式的化学气相传感器
    • US20120152638A1
    • 2012-06-21
    • US11903141
    • 2007-09-20
    • Michel F. SultanDavid K. Lambert
    • Michel F. SultanDavid K. Lambert
    • B60K28/06G01N21/59G01J5/10
    • B60K28/063B60K28/06B60K28/066B60W2540/24G01N21/3504G01N21/61G01N33/4972Y10T436/11Y10T436/117497Y10T436/25Y10T436/255Y10T436/25875
    • A chemical vapor sensor is provided that measures a chemical species of interest with high sensitivity and chemical specificity. In an aspect, an ethanol vapor sensor is provided, sized for being inconspicuous and on-board a vehicle, having a passive measurement mode and an active breathalyzer mode, for detecting a motor vehicle driver that exceeds a legal limit of blood alcohol concentration (BAC), for use with vehicle safety systems. For the passive mode, a vapor concentrator is utilized to amplify a sampled vapor concentration to a detectible level for use with an infrared (IR) detector. In an aspect, ethanol vapor in a vehicle cabin is passively measured and if a predetermined ethanol level is measured, a countermeasure is invoked to improve safety. In an aspect, an active breathalyzer is used as a countermeasure. The active breathalyzer can be imposed for a number of vehicle trips or for a predetermined time period.
    • 提供一种化学气相传感器,以高灵敏度和化学特性测量感兴趣的化学物质。 在一方面,提供了一种乙醇蒸气传感器,其尺寸适于不显眼和车载车辆,具有被动测量模式和主动呼气机模式,用于检测超过血液酒精浓度合法限度的汽车驾驶员(BAC ),用于车辆安全系统。 对于被动模式,使用蒸气浓缩器将采样的蒸汽浓度放大到可用于红外(IR)检测器的可检测水平。 一方面,被动地测量车厢内的乙醇蒸汽,如果测量到预定的乙醇水平,则调用对策以提高安全性。 在一方面,使用活性呼气机作为对策。 主动呼吸机可以施加一些车辆行驶或预定的时间段。