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公开(公告)号：US20120323433A1
公开(公告)日：2012-12-20
申请号：US13162481
申请日：2011-06-16
IPC分类号： G01M15/02
摘要： A vacuum system diagnostic is disclosed. In one example, vacuum system leaks are diagnosed via a pressure reading of a vacuum reservoir. The approach may reduce the number of sensors used to diagnose vacuum system degradation.
摘要翻译： 公开了真空系统诊断。 在一个示例中，通过真空容器的压力读数诊断真空系统泄漏。 该方法可以减少用于诊断真空系统退化的传感器的数量。
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公开(公告)号：US09127578B2
公开(公告)日：2015-09-08
申请号：US13618884
申请日：2012-09-14
CPC分类号： F01M13/00 , F01M11/10 , F01M2013/0083 , F02D41/22 , F02D2250/08 , F02M25/06 , F02M35/10222 , F02M35/1038 , G01M15/042 , Y02T10/40
摘要： Systems and methods for monitoring crankcase ventilation system integrity are disclosed. In one example approach, a method comprises indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube. For example, indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube may include indicating a crankcase ventilation system degradation based on an absolute pressure sensor measurement relative to a gauge pressure sensor measurement.
摘要翻译： 公开了用于监测曲轴箱通风系统完整性的系统和方法。 在一个示例性方法中，一种方法包括基于比PCV通气管下游的预期更低的真空来指示曲轴箱通风系统劣化。 例如，指示基于比PCV通气管下游预期的真空低的曲轴箱通风系统劣化可以包括基于相对于表压传感器测量的绝对压力传感器测量来指示曲轴箱通风系统劣化。
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公开(公告)号：US20140081548A1
公开(公告)日：2014-03-20
申请号：US13618884
申请日：2012-09-14
IPC分类号： G06F19/00
CPC分类号： F01M13/00 , F01M11/10 , F01M2013/0083 , F02D41/22 , F02D2250/08 , F02M25/06 , F02M35/10222 , F02M35/1038 , G01M15/042 , Y02T10/40
摘要： Systems and methods for monitoring crankcase ventilation system integrity are disclosed. In one example approach, a method comprises indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube. For example, indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube may include indicating a crankcase ventilation system degradation based on an absolute pressure sensor measurement relative to a gauge pressure sensor measurement.
摘要翻译： 公开了用于监测曲轴箱通风系统完整性的系统和方法。 在一个示例性方法中，一种方法包括基于比PCV通气管下游的预期更低的真空来指示曲轴箱通风系统劣化。 例如，指示基于比PCV通气管下游预期的真空低的曲轴箱通风系统劣化可以包括基于相对于表压传感器测量的绝对压力传感器测量来指示曲轴箱通风系统劣化。
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公开(公告)号：US09394842B2
公开(公告)日：2016-07-19
申请号：US13324923
申请日：2011-12-13
CPC分类号： F02D41/0255 , F02D37/02 , F02D41/0002 , F02P5/1506 , Y02T10/26 , Y02T10/42 , Y02T10/46
摘要： A method for improving exhaust after treatment initial warm up during engine starting is presented. In one example, the method adjusts an engine air flow amount to a level where a desired substantially constant heat flux is provided by the engine to an exhaust after treatment device. The method may reduce fuel consumption and a need for a vacuum pump to provide vacuum to vacuum consumers of a vehicle during exhaust after treatment heating.
摘要翻译： 提出了一种改善发动机启动后初始加热后排气的方法。 在一个示例中，该方法将发动机空气流量调整到由发动机向处理装置后排气提供期望的基本上恒定的热通量的水平。 该方法可以降低燃料消耗，并且需要真空泵以在处理加热之后的排气期间向车辆的真空消耗者提供真空。
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公开(公告)号：US08960153B2
公开(公告)日：2015-02-24
申请号：US13104153
申请日：2011-05-10
CPC分类号： F02D41/04 , B60T17/02 , F02B37/00 , F02D9/02 , F02D13/0265 , F02D41/0002 , F02D41/0032 , F02D2250/41 , F02M35/10222 , F02M35/10229 , Y02T10/42
摘要： A method for controlling engine vacuum production is disclosed. In one example, one or more air sources to an engine intake manifold are closed so as to increase an amount of air drawn from another air source. The method may increase a rate of vacuum supplied to a vacuum actuated device so as to improve operation of the vacuum actuated device.
摘要翻译： 公开了一种用于控制发动机真空生产的方法。 在一个示例中，关闭发动机进气歧管的一个或多个空气源以增加从另一空气源抽取的空气量。 该方法可以增加提供给真空致动装置的真空速率，从而改善真空致动装置的操作。
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公开(公告)号：US08903630B2
公开(公告)日：2014-12-02
申请号：US13369045
申请日：2012-02-08
CPC分类号： F02D41/0027 , F02D19/0615 , F02D19/0623 , F02D19/0628 , F02D19/0647 , F02D19/0689 , F02D19/0694 , F02D19/084 , F02D41/0025 , F02D41/221 , F02D2200/0602 , Y02T10/36 , Y02T10/40
摘要： Methods and systems are provided for fuel systems including a gaseous fuel. Temporary flow restrictions in the fuel line of a first gaseous fuel may be addressed by temporarily shifting to cylinder operation with a second liquid fuel. Upon resumption of first fuel operation, if the flow restriction persists, a diagnostic code may be set and cylinder operation with the second fuel may be restarted.
摘要翻译： 为包括气体燃料的燃料系统提供了方法和系统。 第一气态燃料的燃料管路中的临时流量限制可以通过用第二液体燃料临时转移到气缸操作来解决。 在恢复第一燃料操作时，如果流量限制仍然存在，则可以设置诊断代码，并且可以重新启动具有第二燃料的气缸操作。
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公开(公告)号：US08899212B2
公开(公告)日：2014-12-02
申请号：US13326150
申请日：2011-12-14
IPC分类号： F02M51/00
CPC分类号： F02D41/062 , F02D9/02 , F02D13/0261 , F02D13/0265 , F02D19/084 , F02D41/0002 , F02D41/0025 , F02D41/008 , F02D2009/0249 , F02D2009/0272 , F02N19/00 , Y02T10/36 , Y02T10/42
摘要： An engine system and method for improving engine starting are disclosed. In one example, engine port throttles are adjusted to improve fuel vaporization of a fuel that includes alcohol. The system and method may improve engine starting and emissions.
摘要翻译： 公开了一种用于改善发动机启动的发动机系统和方法。 在一个示例中，调节发动机端口节流阀以改善包括酒精的燃料的燃料蒸发。 该系统和方法可以改善发动机起动和排放。
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公开(公告)号：US08876492B2
公开(公告)日：2014-11-04
申请号：US13050632
申请日：2011-03-17
摘要： A selectively operable vacuum source is disclosed. In one example, vacuum source supplies as much air to an engine as is drawn by the vacuum source from a vacuum reservoir. The approach may provide vacuum to a vehicle vacuum system efficiently and with less weight than other vacuum sources.
摘要翻译： 公开了一种选择性操作的真空源。 在一个示例中，真空源将真空源从真空容器提供给发动机，由真空源抽出。 该方法可以有效地为车辆真空系统提供真空，并且具有比其它真空源更小的重量。
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公开(公告)号：US08839755B2
公开(公告)日：2014-09-23
申请号：US13429178
申请日：2012-03-23
IPC分类号： F02M35/10
CPC分类号： B60T13/46 , B60T13/52 , B60T17/02 , F02D41/0007 , F02D41/021 , Y02T10/144
摘要： A system for supplying vacuum to a vacuum consumption device of a vehicle is disclosed. The system includes an electrically driven vacuum pump selectively routing air to an air intake system upstream and downstream of a turbocharger.
摘要翻译： 公开了一种用于向车辆的真空消耗装置提供真空的系统。 该系统包括电动真空泵，其选择性地将空气引导到涡轮增压器上游和下游的进气系统。
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公开(公告)号：US08833343B2
公开(公告)日：2014-09-16
申请号：US11871492
申请日：2007-10-12
申请人： Ross Dykstra Pursifull , Dequan Yu
发明人： Ross Dykstra Pursifull , Dequan Yu
CPC分类号： F02D41/406 , F02D41/065 , F02D2200/0602 , F02M59/42 , F02M59/447 , F02M69/54 , Y02T10/44
摘要： A system and method for operating a fuel system that supplies fuel to a plurality of injectors in an internal combustion engine via a first pump and a second pump with a bypass circuit returning fuel from between the first and second pumps to a fuel tank, the pumps connected in series, is provided. The bypass circuit increases its restriction to increase injection pressure during selected conditions.
摘要翻译： 一种用于操作燃料系统的系统和方法，所述燃料系统经由第一泵和第二泵向内燃机中的多个喷射器供应燃料，旁路回路将燃料从第一和第二泵之间返回到燃料箱，所述泵 串联连接。 旁路电路增加了限制，以在选定的条件下提高注射压力。
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