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    • 3. 发明申请
    • Method for testing the function of a pressure switch of a tank ventilation system, control device, and internal combustion engine
    • 用于测试油箱通风系统,控制装置和内燃机压力开关功能的方法
    • US20100071672A1
    • 2010-03-25
    • US12516775
    • 2007-11-27
    • Oliver GrunwaldArmin Köhler
    • Oliver GrunwaldArmin Köhler
    • F02M25/08
    • F02M25/0818
    • The switched state of a pressure switch in a tank ventilation system of a motor vehicle is used for testing the function of the tank ventilation system, the pressure switch being in a low-pressure position if the pressure in the tank ventilation system is lower than a predefined pressure limit while being in a high-pressure position if that is not the case. A defective pressure switch can result in wrong assessments. Disclosed is a method for testing the function of the pressure switch, the method encompassing the following steps: a switched state of the pressure switch is detected; a measure is carried out that increases the pressure in the tank ventilation system above the pressure limit if the pressure switch is in the low-pressure position; a defect of the pressure switch is identified if the pressure switch remains in the low-pressure position after carrying out the measure.
    • 机动车辆的通风系统中的压力开关的切换状态用于测试油箱通风系统的功能,如果油箱通风系统中的压力低于油箱通风系统,压力开关处于低压位置 如果不是这种情况,则处于高压位置时的预定压力极限。 有缺陷的压力开关可能导致错误的评估。 公开了一种用于测试压力开关功能的方法,该方法包括以下步骤:检测压力开关的开关状态; 如果压力开关处于低压位置,则进行将压力通风系统中的压力提高到压力极限以上的措施; 如果在执行测量之后压力开关保持在低压位置,则识别出压力开关的缺陷。
    • 4. 发明授权
    • Method for testing the function of a pressure switch of a tank ventilation system, control device, and internal combustion engine
    • 用于测试油箱通风系统,控制装置和内燃机压力开关功能的方法
    • US08161948B2
    • 2012-04-24
    • US12516775
    • 2007-11-27
    • Oliver GrunwaldArmin Köhler
    • Oliver GrunwaldArmin Köhler
    • F02M33/02F02M25/08F02B77/08
    • F02M25/0818
    • The switched state of a pressure switch in a tank ventilation system of a motor vehicle is used for testing the function of the tank ventilation system, the pressure switch being in a low-pressure position if the pressure in the tank ventilation system is lower than a predefined pressure limit while being in a high-pressure position if that is not the case. A defective pressure switch can result in wrong assessments. Disclosed is a method for testing the function of the pressure switch, the method encompassing the following steps: a switched state of the pressure switch is detected; a measure is carried out that increases the pressure in the tank ventilation system above the pressure limit if the pressure switch is in the low-pressure position; a defect of the pressure switch is identified if the pressure switch remains in the low-pressure position after carrying out the measure.
    • 机动车辆的通风系统中的压力开关的切换状态用于测试油箱通风系统的功能,如果油箱通风系统中的压力低于油箱通风系统,压力开关处于低压位置 如果不是这种情况,则处于高压位置时的预定压力极限。 有缺陷的压力开关可能导致错误的评估。 公开了一种用于测试压力开关功能的方法,该方法包括以下步骤:检测压力开关的开关状态; 如果压力开关处于低压位置,则进行将压力通风系统中的压力提高到压力极限以上的措施; 如果在执行测量之后压力开关保持在低压位置,则识别出压力开关的缺陷。