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1.发明申请SYSTEM AND METHOD FOR CONTROLLING A VACUUM PUMP THAT IS USED TO CHECK FOR LEAKS IN AN EVAPORATIVE EMISSIONS SYSTEM 有权用于控制真空泵的系统和方法，用于检查蒸发排放系统中的泄漏公开(公告)号：US20140102565A1
公开(公告)日：2014-04-17
申请号：US13651533
申请日：2012-10-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Robert Jackson , William R. Cadman , Paul William Rasmussen
CPC classification number: F02M25/0809 , F02M65/003 , F04C18/3441 , F04C25/02 , F04C28/06 , G01M99/008 , Y10T137/85986
Abstract: A control system according to the principles of the present disclosure includes a fuel system diagnostic module and a pump control module. The fuel system diagnostic module performs a diagnostic test on a fuel system when a vacuum pump is switched off to prevent flow through the vacuum pump and thereby seal a portion of the fuel system from an atmosphere. The vacuum pump includes a cam ring, a rotor that rotates within the cam ring, and vanes that slide into and out of slots in the rotor as the rotor rotates. The pump control module switches on the vacuum pump for a predetermined period to force the vanes out of the slots and into contact with the cam ring to seal the vacuum pump before switching off the vacuum pump for the fuel system diagnostic test.
Abstract translation: 根据本公开的原理的控制系统包括燃料系统诊断模块和泵控制模块。 当真空泵关闭时，燃料系统诊断模块对燃料系统进行诊断测试，以防止流过真空泵，从而将燃料系统的一部分与大气密封。 真空泵包括凸轮环，在凸轮环内旋转的转子和当转子旋转时滑入和转出转子中的槽的叶片。 泵控制模块在预定时间内接通真空泵，以迫使叶片离开槽并与凸轮环接触，以在切断用于燃料系统诊断测试的真空泵之前密封真空泵。
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公开(公告)号：US09316558B2
公开(公告)日：2016-04-19
申请号：US13909424
申请日：2013-06-04
Applicant: GM Global Technology Operations LLC
Inventor： Robert Jackson , John F. Van Gilder
CPC classification number: G01L27/007 , F02D19/025 , F02D19/027 , F02D19/0621 , F02D19/0628 , F02D41/0037 , F02D2041/223 , F02D2041/224 , F02M25/0809 , F02M25/0836 , Y02T10/40
Abstract: A system includes an ignition detection module, a pressure sensor, a pressure variation module, and a pressure sensor diagnostic module. The ignition detection module detects when an engine is started. The pressure sensor generates a first pressure signal indicating a first pressure within a fuel system of the engine when the engine is started and when a purge valve of the fuel system is closed. The pressure variation module determines an amount of variation in the first pressure signal over a first period. The pressure sensor diagnostic module determines a state of the pressure sensor based on the amount of variation in the first pressure signal over the first period.
Abstract translation: 一种系统包括点火检测模块，压力传感器，压力变化模块和压力传感器诊断模块。 点火检测模块检测发动机何时启动。 当发动机起动时和当燃料系统的排放阀关闭时，压力传感器产生指示发动机的燃料系统内的第一压力的第一压力信号。 压力变化模块确定第一时间段内的第一压力信号的变化量。 压力传感器诊断模块基于在第一周期中的第一压力信号的变化量来确定压力传感器的状态。
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3.发明授权System and method for controlling a vacuum pump that is used to check for leaks in an evaporative emissions system 有权用于控制用于检查蒸发排放系统中的泄漏的真空泵的系统和方法公开(公告)号：US09038489B2
公开(公告)日：2015-05-26
申请号：US13651533
申请日：2012-10-15
Applicant: GM Global Technology Operations LLC
Inventor： Robert Jackson , William R. Cadman , Paul William Rasmussen
IPC: G01M15/00 , G01M15/09 , G01L23/24 , F02M25/08 , F02M65/00 , G01M99/00 , F04C25/02 , F04C28/06 , F04C18/344
CPC classification number: F02M25/0809 , F02M65/003 , F04C18/3441 , F04C25/02 , F04C28/06 , G01M99/008 , Y10T137/85986
Abstract: A control system according to the principles of the present disclosure includes a fuel system diagnostic module and a pump control module. The fuel system diagnostic module performs a diagnostic test on a fuel system when a vacuum pump is switched off to prevent flow through the vacuum pump and thereby seal a portion of the fuel system from an atmosphere. The vacuum pump includes a cam ring, a rotor that rotates within the cam ring, and vanes that slide into and out of slots in the rotor as the rotor rotates. The pump control module switches on the vacuum pump for a predetermined period to force the vanes out of the slots and into contact with the cam ring to seal the vacuum pump before switching off the vacuum pump for the fuel system diagnostic test.
Abstract translation: 根据本公开的原理的控制系统包括燃料系统诊断模块和泵控制模块。 当真空泵关闭时，燃料系统诊断模块对燃料系统进行诊断测试，以防止流过真空泵，从而将燃料系统的一部分与大气密封。 真空泵包括凸轮环，在凸轮环内旋转的转子和当转子旋转时滑入和转出转子中的槽的叶片。 泵控制模块在预定时间内接通真空泵，以迫使叶片离开槽并与凸轮环接触，以在切断用于燃料系统诊断测试的真空泵之前密封真空泵。
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4.发明授权System and method for diagnosing flow through a purge valve based on a fuel system pressure sensor 有权用于诊断通过基于燃料系统压力传感器的吹扫阀的流量的系统和方法公开(公告)号：US09176022B2
公开(公告)日：2015-11-03
申请号：US13832766
申请日：2013-03-15
Applicant: GM Global Technology Operations LLC
Inventor： Robert Jackson
IPC: G01M15/09
CPC classification number: G01M15/09
Abstract: A system according to the principles of the present disclosure includes a pressure sensor, a pressure variation module, and a purge flow diagnostic module. The pressure sensor generates a pressure signal indicating a pressure within a fuel system of an engine. The pressure variation module determines an amount of variation in the pressure signal over a period. The purge flow diagnostic module diagnoses a fault associated with flow through a purge valve of the fuel system when the pressure variation amount is less than a threshold.
Abstract translation: 根据本公开的原理的系统包括压力传感器，压力变化模块和清洗流量诊断模块。 压力传感器产生指示发动机的燃料系统内的压力的压力信号。 压力变化模块确定一段时间内压力信号的变化量。 当压力变化量小于阈值时，净化流量诊断模块诊断与通过燃料系统的净化阀的流量相关联的故障。
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