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公开(公告)号：US10125711B2
公开(公告)日：2018-11-13
申请号：US14811928
申请日：2015-07-29
摘要： Various systems are provided for delivering fuel to an engine. In one example, a system includes a controller and a fluid system configured to maintain a fluid at a pressure downstream of a check valve. The controller may be configured to determine if a leak is present in the fluid system based on a first pressure decay rate of the fluid system, and responsive to identifying that a leak is present in the fluid system, differentiate between an internal leak and an external leak based on a leak flow rate as fluid system pressure decreases.
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公开(公告)号：US20180223784A1
公开(公告)日：2018-08-09
申请号：US15875787
申请日：2018-01-19
发明人： Jeffrey David Willis
CPC分类号： F02M61/1813 , F02B23/0669 , F02M61/14 , F02M61/182 , F02M2200/46 , F02M2200/50 , Y02T10/125
摘要： Various methods and systems are provided for a fuel injector. In one example, a fuel injector includes a nozzle tip including a plurality of injection holes, a first needle biased against the nozzle tip via a first biasing member positioned within a first control volume, and a second needle surrounding a portion of the first needle and biased against the first needle and the nozzle tip via a second biasing member positioned within a second control volume. A needle actuator may be energized for different durations of time in order to move one or more of the first needle and the second needle relative to the nozzle tip.
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公开(公告)号：US10260446B2
公开(公告)日：2019-04-16
申请号：US15215620
申请日：2016-07-21
IPC分类号： F02D41/38 , F02M59/46 , F02M55/02 , F16K37/00 , F02D41/24 , F02D41/12 , F02D41/20 , F02D41/22
摘要： Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a low-pressure pump operable to pump fuel from a fuel source at a first pressure, a high-pressure pump operable to increase the first pressure to a second pressure, a valve positioned between the low-pressure pump and the high-pressure pump and operable to control fuel flow to the high-pressure pump, a common fuel rail fluidly coupling the high-pressure pump to a plurality of fuel injectors coupled to cylinders of an engine, and a controller. The controller is operable to adjust an amount of valve electrical current supplied to the valve to reach a commanded pressure of the common fuel rail during cylinder firing conditions, the supplied valve electrical current adjusted based on a valve pre-firing correction factor for the valve obtained based on valve electrical current prior to cylinder firing commencing.
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公开(公告)号：US09904884B2
公开(公告)日：2018-02-27
申请号：US14607158
申请日：2015-01-28
IPC分类号： G01M15/12 , G06K19/07 , F02C6/12 , G06K19/077
CPC分类号： G06K19/0716 , F02C6/12 , F05D2220/40 , F05D2260/80 , G01M15/12 , G06K19/07798
摘要： Various methods and systems are provided for diagnosing a rotating device. In one example, a system includes a rotating device and a RFID circuit coupled to the rotating device. The RFID circuit includes a RFID chip, an antenna, and a mechanical link designed to change impedance with a changing input from the rotating device.
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公开(公告)号：US09790869B2
公开(公告)日：2017-10-17
申请号：US14669058
申请日：2015-03-26
发明人： Paul Lloyd Flynn , Ganesha Koggu Naik , Thomas Michael Lavertu , Victor Manuel Salazar , Jeffrey David Willis
CPC分类号： F02D19/0642 , F02D13/0234 , F02D13/0269 , F02D19/0647 , F02D19/0673 , F02D19/08 , F02D35/025 , F02D41/0002 , F02D41/0025 , F02D41/0027 , F02D2041/001 , F02D2200/0414 , F02D2200/1002 , F02D2200/101 , F02D2200/703 , Y02T10/142 , Y02T10/18 , Y02T10/36 , Y02T10/42
摘要： Various methods and systems are provided for a multi-fuel capable engine. In one example, a system comprises an engine having at least one cylinder controlled via an intake valve, a first fuel system to deliver liquid fuel and a second fuel system to deliver gaseous fuel to the at least one cylinder, a variable valve timing actuation system to adjust one or more of an opening or a closing timing of the intake valve, and a controller. The controller is configured to, during a liquid fuel only mode, adjust the variable valve timing actuation system to close the intake valve at a first timing based at least on engine load, and during a multi-fuel mode, adjust the variable valve timing actuation system to close the intake valve at a second timing.
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公开(公告)号：US20140330504A1
公开(公告)日：2014-11-06
申请号：US13886486
申请日：2013-05-03
IPC分类号： F02D41/30
CPC分类号： F02D41/3005 , F02D35/023 , F02D41/2416 , F02D41/2419 , F02D41/2467 , F02D41/40 , F02D2041/1429 , F02D2200/0602 , Y02T10/44
摘要： Various methods and systems are provided for indexing an injector map and subsequently controlling fuel injection to an engine. In one embodiment, a non-transitory computer readable storage medium with memory comprises fuel injector activation data indexed in the memory according to an input parameter, instructions for determining a modified pressure value based on a determined pressure and a modified pressure function, and instructions for generating a fuel injector activation output by interpolating among the indexed fuel injector activation data with the modified pressure value as the input parameter.
摘要翻译： 提供各种方法和系统用于对注射器图进行分度索引并随后控制对发动机的燃料喷射。 在一个实施例中，具有存储器的非瞬时计算机可读存储介质包括根据输入参数在存储器中索引的燃料喷射器激活数据，用于基于确定的压力和修改的压力函数来确定修改的压力值的指令，以及用于 通过在索引的燃料喷射器启动数据与修改的压力值之间进行内插作为输入参数来产生燃料喷射器激活输出。
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公开(公告)号：US20190048820A1
公开(公告)日：2019-02-14
申请号：US16164238
申请日：2018-10-18
摘要： Various systems are provided for delivering fuel to an engine. In one example, a system includes a controller and a fluid system configured to maintain a fluid at a pressure downstream of a check valve. The controller may be configured to determine if a leak is present in the fluid system based on a first pressure decay rate of the fluid system, and responsive to identifying that a leak is present in the fluid system, differentiate between an internal leak and an external leak based on a leak flow rate as fluid system pressure decreases.
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公开(公告)号：US20180023501A1
公开(公告)日：2018-01-25
申请号：US15215620
申请日：2016-07-21
CPC分类号： F02D41/3845 , F02D41/123 , F02D41/2438 , F02D2041/2058 , F02D2041/224 , F02D2200/0602 , F02M55/025 , F02M59/466 , F16K37/0083
摘要： Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a low-pressure pump operable to pump fuel from a fuel source at a first pressure, a high-pressure pump operable to increase the first pressure to a second pressure, a valve positioned between the low-pressure pump and the high-pressure pump and operable to control fuel flow to the high-pressure pump, a common fuel rail fluidly coupling the high-pressure pump to a plurality of fuel injectors coupled to cylinders of an engine, and a controller. The controller is operable to adjust an amount of valve electrical current supplied to the valve to reach a commanded pressure of the common fuel rail during cylinder firing conditions, the supplied valve electrical current adjusted based on a valve pre-firing correction factor for the valve obtained based on valve electrical current prior to cylinder firing commencing.
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公开(公告)号：US09828930B2
公开(公告)日：2017-11-28
申请号：US14491561
申请日：2014-09-19
IPC分类号： F02D41/38 , F02M37/00 , F02D41/22 , F02D41/24 , F02M63/02 , F02M59/36 , F02D41/06 , F02D41/20
CPC分类号： F02D41/3845 , F02D41/062 , F02D41/221 , F02D41/2438 , F02D2041/2058 , F02M37/0047 , F02M59/36 , F02M63/0225
摘要： Various methods and systems are provided diagnosing a valve. In one example, a system comprises a valve configured to regulate a fuel flow, and a controller configured to determine degradation of the valve based on an initial opening characteristic of the valve.
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公开(公告)号：US20170030281A1
公开(公告)日：2017-02-02
申请号：US14811928
申请日：2015-07-29
CPC分类号： F02D41/22 , F02D41/0027 , F02D41/3809 , F02D2041/225 , F02M59/464 , F02M65/006 , G01M3/025 , G01M3/2876
摘要： Various systems are provided for delivering fuel to an engine. In one example, a system includes a controller and a fluid system configured to maintain a fluid at a pressure downstream of a check valve. The controller may be configured to determine if a leak is present in the fluid system based on a first pressure decay rate of the fluid system, and responsive to identifying that a leak is present in the fluid system, differentiate between an internal leak and an external leak based on a leak flow rate as fluid system pressure decreases.
摘要翻译： 提供了用于将燃料输送到发动机的各种系统。 在一个示例中，系统包括控制器和被配置为将流体保持在止回阀下游的压力的流体系统。 控制器可以被配置为基于流体系统的第一压力衰减速率来确定流体系统中是否存在泄漏，并且响应于识别出在流体系统中存在泄漏，区分内部泄漏和外部泄漏 当流体系统压力降低时，基于泄漏流量的泄漏。
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