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    • 2. 发明授权
    • Method and control unit for function diagnosis of a fuel-tank venting valve of a fuel tank system in a motor vehicle in particular
    • 特别是用于机动车辆中的燃料箱系统的燃料箱排放阀的功能诊断方法和控制单元
    • US07162914B2
    • 2007-01-16
    • US10484974
    • 2002-06-21
    • Martin StreibDieter LedererKarl-Bernhard Lederle
    • Martin StreibDieter LedererKarl-Bernhard Lederle
    • G01M3/04
    • F02M25/0818
    • In a method for testing the functional reliability of a fuel-tank venting valve which is provided in a tank system of a motor vehicle in particular, is connected to an intake manifold and is triggerable by a control unit, a pressure source is provided for testing the tank system for leaks by using excess pressure or a vacuum, and the test of the functional reliability of the fuel-tank venting valve is performed on the basis of at least one performance quantity of the pressure source. In order to achieve a short diagnostic time and a high degree of diagnostic certainty, the fuel-tank venting valve is triggered to open or close, and a certain change in pressure is implemented. The at least one performance quantity of the pressure source is detected, and a properly opening and closing fuel-tank venting valve is determined from the performance quantity thus detected.
    • 在一种用于测试设置在机动车辆的油箱系统中的燃油箱排放阀的功能可靠性的方法中,连接到进气歧管并且可由控制单元触发,提供用于测试的压力源 通过使用过量压力或真空来泄漏的罐系统,以及基于压力源的至少一个性能量来执行燃料箱排放阀的功能可靠性的测试。 为了实现较短的诊断时间和高度的诊断确定性,燃油箱通气阀被触发打开或关闭,并且实施了一定的压力变化。 检测压力源的至少一个性能量,根据这样检测出的性能量确定正确打开和关闭的燃料箱排放阀。
    • 3. 发明申请
    • Procedure to diagnose a leak in the fuel tank in a fuel tank ventilation system
    • 在燃油箱通风系统中诊断燃油箱泄漏的程序
    • US20080034843A1
    • 2008-02-14
    • US11880538
    • 2007-07-23
    • Martin StreibKarl-Bernhard LederleMichael Pfeil
    • Martin StreibKarl-Bernhard LederleMichael Pfeil
    • G01M3/04
    • G01M3/3263
    • A method of diagnosing a fuel tank leak in a fuel tank ventilation system, comprising a fuel tank, an accumulator for fuel vapors and a fuel tank ventilation valve opening out into an intake manifold of an internal combustion engine, wherein the fuel tank, the accumulator and the fuel tank ventilation valve are connected by way of a system of lines and wherein the accumulator has an aeration line with a check valve, the method comprising: immediately before turning off the internal combustion engine, closing the check valve and opening the fuel tank ventilation valve to generate a vacuum in the fuel tank ventilation system; acquiring a vacuum degradation at specifiable points in time when the fuel tank ventilation valve is closed; opening of the check valve in order to bring about a pressure equilibrium with the ambient pressure; renewed closing of the check valve; acquiring a pressure increase emerging over at least a specifiable time interval and determination of a compensation variable; and inference about the presence of a leakage from behavior of the vacuum degradation over time, while taking into account behavior of the compensation variable over time.
    • 一种在燃料箱通风系统中诊断燃料箱泄漏的方法,包括燃料箱,用于燃料蒸汽的蓄能器和通向内燃机的进气歧管的燃料箱通风阀,其中燃料箱,蓄能器 并且所述燃料箱通风阀通过管线系统连接,并且其中所述蓄能器具有带止回阀的通气管,所述方法包括:在关闭所述内燃机之前,关闭所述止回阀并打开所述燃料箱 通风阀在燃油箱通风系统中产生真空; 在燃料箱通风阀关闭的可指定时间点获得真空退化; 打开止回阀以实现与环境压力的压力平衡; 更换关闭止回阀; 在至少可指定的时间间隔内获得压力增加并确定补偿变量; 并且在考虑到随时间推移的补偿变量的行为时,推断出随着时间的推移存在真空退化行为的泄漏。
    • 6. 发明授权
    • Procedure to diagnose a leak in the fuel tank in a fuel tank ventilation system
    • 在燃油箱通风系统中诊断燃油箱泄漏的程序
    • US07584651B2
    • 2009-09-08
    • US11880538
    • 2007-07-23
    • Martin StreibKarl-Bernhard LederleMichael Pfeil
    • Martin StreibKarl-Bernhard LederleMichael Pfeil
    • G01M3/26G01M3/32
    • G01M3/3263
    • A method of diagnosing a fuel tank leak in a fuel tank ventilation system, comprising a fuel tank, an accumulator for fuel vapors and a fuel tank ventilation valve opening out into an intake manifold of an internal combustion engine, wherein the fuel tank, the accumulator and the fuel tank ventilation valve are connected by way of a system of lines and wherein the accumulator has an aeration line with a check valve, the method comprising: immediately before turning off the internal combustion engine, closing the check valve and opening the fuel tank ventilation valve to generate a vacuum in the fuel tank ventilation system; acquiring a vacuum degradation at specifiable points in time when the fuel tank ventilation valve is closed; opening of the check valve in order to bring about a pressure equilibrium with the ambient pressure; renewed closing of the check valve; acquiring a pressure increase emerging over at least a specifiable time interval and determination of a compensation variable; and inference about the presence of a leakage from behavior of the vacuum degradation over time, while taking into account behavior of the compensation variable over time.
    • 一种在燃料箱通风系统中诊断燃料箱泄漏的方法,包括燃料箱,用于燃料蒸汽的蓄能器和通向内燃机的进气歧管的燃料箱通风阀,其中燃料箱,蓄能器 并且所述燃料箱通风阀通过管线系统连接,并且其中所述蓄能器具有带止回阀的通气管,所述方法包括:在关闭所述内燃机之前,关闭所述止回阀并打开所述燃料箱 通风阀在燃油箱通风系统中产生真空; 在燃料箱通风阀关闭的可指定时间点获得真空退化; 打开止回阀以实现与环境压力的压力平衡; 更换关闭止回阀; 在至少可指定的时间间隔内获得压力增加并确定补偿变量; 并且在考虑到随时间推移的补偿变量的行为时,推断出随着时间的推移存在真空退化行为的泄漏。
    • 7. 发明授权
    • Tank-venting system in a motor vehicle and method for checking the operability of the tank-venting system
    • 机动车辆的排气系统以及用于检查排气系统的可操作性的方法
    • US06889667B2
    • 2005-05-10
    • US10378616
    • 2003-03-05
    • Thorsten FritzDieter LedererKarl-Bernhard Lederle
    • Thorsten FritzDieter LedererKarl-Bernhard Lederle
    • G01M3/26F02M25/08B60K15/035
    • F02M25/0818
    • A method checks the operability of a tank-venting system for a motor vehicle having an internal combustion engine. The tank-venting system includes a fuel tank (10), an adsorption filter (20) and a filter line (12) connecting the adsorption filter to the fuel tank. The adsorption filter (20) has a venting line (22) and a switchover/check valve (70) is provided for closing off the venting line (22). The system includes a tank-venting valve (90) and a valve line (24) connecting the tank-venting valve to the adsorption filter. In the method, an overpressure relative to atmospheric pressure is introduced into the tank-venting system utilizing a drivable pressure source (50). An operating characteristic variable of the pressure source is detected while introducing the overpressure to determine the pressure course. A conclusion is drawn as to the presence of a leak from the pressure course. The overpressure is reduced by opening the tank-venting valve (90) and simultaneously closing said switchover/check valve (70).
    • 一种方法检查具有内燃机的机动车辆的排气系统的可操作性。 排气系统包括将吸附过滤器连接到燃料箱的燃料箱(10),吸附过滤器(20)和过滤管线(12)。 吸附过滤器(20)具有排气管线(22),并且设置有切断/止回阀(70)以关闭通气管线(22)。 该系统包括一个通气阀(90)和一个将排气阀连接到吸附过滤器的阀线(24)。 在该方法中,使用可驱动的压力源(50)将相对于大气压的超压引入到排气系统中。 在引入过压的同时检测压力源的工作特性变量以确定压力进程。 得出的结论是压力过程中存在泄漏。 通过打开通气阀(90)并同时关闭所述切换/止回阀(70)来减小过压。
    • 10. 发明授权
    • Method and arrangement for checking the tightness of a vessel
    • 检查船舶紧密度的方法和装置
    • US06840234B2
    • 2005-01-11
    • US10664942
    • 2003-09-22
    • Dieter LedererKarl-Bernhard LederleSujay Sirur
    • Dieter LedererKarl-Bernhard LederleSujay Sirur
    • G01M3/26F02M25/08F02M37/10G01M3/02G01M3/32F02M33/02
    • F02M37/106F02M25/0809F02M25/0818F02M25/089F02M2025/0881G01M3/3254
    • In order to reduce the influence of the elasticity of components of a vessel (10, 20, 30, 40, 50) and/or of an outgassing of a liquid fluid (11), which is disposed in the vessel (10, 20, 30, 40, 50) or a condensation of a gas disposed in the vessel or of a gas mixture (12) on an underpressure or an overpressure in the vessel, a gas mass flow is controlled to obtain a constant underpressure or overpressure in the vessel. In this way, a leak of the vessel can be detected with great reliability and the size of the leak can be computed with great accuracy. The vessel is especially a vessel of a tank system and tank-venting system of a motor vehicle having an internal combustion engine. In the event that a gas mass flow adjusts, which is constant in average, and which is greater than a pregivable limit value, a conclusion is drawn as to the presence of a leak. The size of the leak is computed from a signal characterizing the constant gas mass flow.
    • 为了减少容器(10,20,20)中设置的容器(10,20,30,40,50)和/或排出液体流体(11)的组分的弹性的影响, 30,40,50)或设置在容器中的气体或气体混合物(12)在容器中的负压或超压下的冷凝,控制气体质量流量以在容器中获得恒定的负压或超压 。 以这种方式,可以高度可靠地检测容器的泄漏,并且可以以高精度计算泄漏的尺寸。 船舶尤其是具有内燃机的机动车辆的油罐系统和油箱排放系统的船舶。 在气体质量流量调整的情况下,其平均恒定且大于可预期的极限值,就会出现泄漏的结论。 泄漏的大小由表征恒定气体质量流量的信号计算。