公开(公告)号：US20090099795A1

公开(公告)日：2009-04-16

申请号：US12162439

申请日：2007-02-05

申请人： Ron Behar ,  Eric Grant ,  Ryan McCleary ,  David Hill ,  Scott Garabedian ,  Saurin Mehta ,  Kevin Slusser ,  Dave Dirkson

发明人： Ron Behar ,  Eric Grant ,  Ryan McCleary ,  David Hill ,  Scott Garabedian ,  Saurin Mehta ,  Kevin Slusser ,  Dave Dirkson

IPC分类号： G01M3/04

CPC分类号： F02M25/0818 ,  F02M25/0836 ,  F02M2025/0845

摘要： Method of detecting a leak in a fuel system comprising a fuel tank and an orifice with a controlled section between the tank and the atmosphere, according to which a) the controlled section is set to a value A1 at a time T1 and a pressure differential Δp1 between the inside of the tank and the atmosphere is measured at least after an interval of time ΔT from T1, for a constant fuel flow out of the tank; b) the controlled section is set to a value A2 at a time T2 and a pressure differential Δp2 between the inside of the tank and the atmosphere is measured at least after the same interval of time ΔT from T2, for the same constant fuel flow; c) a ratio of the pressure differentials Δp1 and Δp2 is computed and is compared to a reference pressure differential ratio APL obtained with the same fuel system but comprising a calibrated leak.

摘要翻译： 一种在燃料系统中检测泄漏的方法，包括燃料箱和在罐和大气之间具有受控部分的孔口，根据该方法，a）控制部分在时间T1和压差Deltap1被设定为值A1 至少在从T1开始的时间间隔DeltaT之后测量储罐内部和大气之间的恒定燃料流出罐; b）控制部分在时间T2被设定为值A2，并且对于相同的恒定燃料流量，至少在与T2相同的时间间隔DeltaT之后至少测量罐内部和大气之间的压力差Deltap2; c）计算压力差Deltap1和Deltap2的比率，并将其与使用相同燃料系统获得但包括校准泄漏的参考压差比APL进行比较。

公开(公告)号：US07908099B2

公开(公告)日：2011-03-15

申请号：US12162439

申请日：2007-02-05

申请人： Ron Behar ,  Eric Grant ,  Ryan McCleary ,  David Hill ,  Scott Garabedian ,  Saurin Mehta ,  Kevin Slusser ,  Dave Dirkson

发明人： Ron Behar ,  Eric Grant ,  Ryan McCleary ,  David Hill ,  Scott Garabedian ,  Saurin Mehta ,  Kevin Slusser ,  Dave Dirkson

IPC分类号： G01F17/00

CPC分类号： F02M25/0818 ,  F02M25/0836 ,  F02M2025/0845

摘要： Method of detecting a leak in a fuel system comprising a fuel tank and an orifice with a controlled section between the tank and the atmosphere, according to which a) the controlled section is set to a value Al at a time T1 and a pressure differential Δp1 between the inside of the tank and the atmosphere is measured at least after an interval of time ΔT from T1, for a constant fuel flow out of the tank; b) the controlled section is set to a value A2 at a time T2 and a pressure differential Δp2 between the inside of the tank and the atmosphere is measured at least after the same interval of time ΔT from T2, for the same constant fuel flow; c) a ratio of the pressure differentials Δp1 and Δp2 is computed and is compared to a reference pressure differential ratio ΔpL obtained with the same fuel system but comprising a calibrated leak.

摘要翻译： 一种在燃料系统中检测泄漏的方法，包括燃料箱和在罐和大气之间具有受控部分的孔口，根据该方法，a）控制部分在时间T1和压力差Dgr被设定为值A1 至少在从T1开始的间隔时间之后测量罐内部和大气之间的p1，以确保燃料从罐中流出; b）控制部分在时间T2设定为值A2，并且至少在相同时间间隔之后测量罐内部和大气之间的压力差Dgr; p2;对于相同的时间间隔，Dgr; T，相同 恒定燃油流量; c）计算压差＆Dgr; p1和＆Dgr; p2的比率，并将其与使用相同燃料系统获得但包括校准泄漏的参考压力差压比＆Dgr; pL进行比较。

公开(公告)号：US20090314072A1

公开(公告)日：2009-12-24

申请号：US12445236

申请日：2007-10-23

申请人： Kevin Slusser ,  Eric Grant

发明人： Kevin Slusser ,  Eric Grant

IPC分类号： G01M15/00

CPC分类号： B60K15/0406 ,  B60K15/035 ,  B60K15/05 ,  F02M25/0809

摘要： Method for detecting a cap off situation on the fuel tank of a combustion engine vehicle having a fill pipe head located under a fuel fill door, according to which a cap off test is run when the engine is started again after having been switched off and when a door switch indicates that the fuel fill door has been opened.

摘要翻译： 一种用于检测燃料发动机车辆的燃料箱上的盖帽状况的方法，该内燃机车辆具有位于燃料填充门下方的填充管头，根据该方法，当发动机在关闭后再次启动时以及何时 门开关指示燃料加注门已打开。