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公开(公告)号：US10590836B2
公开(公告)日：2020-03-17
申请号：US15878865
申请日：2018-01-24
摘要： Methods and systems are provided for improving surge control in a boosted engine system configured with an electric motor to provide electrical boost assistance. Tip-in and tip-out surge are addressed by increasing the opening of a compressor recirculation valve and coordinating the recirculation valve opening with adjustments to an exhaust waste-gate position and a power output by the electric motor. The adjustments enable an intake airflow to be provided that operates the compressor outside a surge region while providing a target boost pressure as operator torque demand increases or decreases.
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公开(公告)号：US20180355788A1
公开(公告)日：2018-12-13
申请号：US16106543
申请日：2018-08-21
IPC分类号： F02B37/18
CPC分类号： F02B37/183 , F05B2270/404 , Y02T10/144
摘要： Methods and systems are provided for controlling a wastegate coupled to a turbine. In one example, a method may include during steady engine operation, actuating a wastegate to introduce an oscillation in boost pressure, and updating gain of a wastegate feedback controller responsive to the oscillation in boost pressure.
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公开(公告)号：US10006338B2
公开(公告)日：2018-06-26
申请号：US14924510
申请日：2015-10-27
发明人： Julia Helen Buckland , Chris Paul Glugla , Robert Andrew Wade , Jason Eugene Devries , Charles A. Cockerill , Gregory Patrick McConville
CPC分类号： F02B29/0425 , F02B29/0418 , F02B29/0437 , F02D23/00 , F02D41/0007 , F02M26/05 , Y02T10/144 , Y02T10/146
摘要： Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.
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公开(公告)号：US09631629B2
公开(公告)日：2017-04-25
申请号：US14160156
申请日：2014-01-21
CPC分类号： F04D27/0207 , F02C6/12 , F04D25/024 , F04D27/0223
摘要： A method for controlling air flow through a compressor recirculation passage, comprising: during a first condition: reducing air flow through the compressor recirculation passage based on a margin, the margin based on a rate of air flow at a compressor inlet, a rate of air flow through the compressor recirculation passage, and a rate of EGR flow. In this way, the CRV recirculation flow may be controlled to be less than the amount that could potentially backflow into an air filter disposed in the air intake passage, thus preventing EGR contained in the CRV recirculation flow from fouling the air filter with soot, oil and water.
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公开(公告)号：US20160047297A1
公开(公告)日：2016-02-18
申请号：US14924510
申请日：2015-10-27
发明人： Julia Helen Buckland , Chris Paul Glugla , Robert Andrew Wade , Jason Eugene Devries , Charles A. Cockerill , Gregory Patrick McConville
CPC分类号： F02B29/0425 , F02B29/0418 , F02B29/0437 , F02D23/00 , F02D41/0007 , F02M26/05 , Y02T10/144 , Y02T10/146
摘要： Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.
摘要翻译： 提供了增压空气冷却器的实施例。 在一个示例中，引擎方法包括在第一模式期间，响应于在增压空气冷却器的上游的压缩机操作来减小增压空气冷却器的体积。 以这种方式，可以防止压缩机浪涌。
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公开(公告)号：US09175629B2
公开(公告)日：2015-11-03
申请号：US13903807
申请日：2013-05-28
发明人： Ralph Wayne Cunningham , Matthew John Gerhart , Julia Helen Buckland , Suzanne Kay Wait , Michael Howard Shelby , Jeffrey Allen Doering , Mrdjan J. Jankovic , John Eric Rollinger , Gopichandra Surnilla , Naginder Gogna
CPC分类号： F02D41/1486 , F02D11/10 , F02D11/105 , F02D41/0007 , F02D41/006 , F02D41/0065 , F02D41/045 , F02D41/10 , F02D2041/001 , F02D2200/0406 , F02D2200/0411 , F02D2250/18 , F02M26/06 , Y02T10/144 , Y02T10/47
摘要： A method and system for providing a suitable engine torque response during a transient condition is presented. In one example, when a desired inlet manifold pressure is greater than a throttle inlet pressure of a first throttle, a second throttle positioned upstream from the first throttle is opened to increase the throttle inlet pressure. The method may provide an appropriate torque response while minimizing impact on fuel economy.
摘要翻译： 提出了一种用于在瞬态条件下提供合适的发动机转矩响应的方法和系统。 在一个示例中，当所需的入口歧管压力大于第一节气门的节气门入口压力时，打开位于第一节气门上游的第二节气门以增加节气门入口压力。 该方法可以提供适当的扭矩响应，同时最小化对燃料经济性的影响。
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7.发明申请公开(公告)号：US20150292424A1
公开(公告)日：2015-10-15
申请号：US14752289
申请日：2015-06-26
发明人： Gopichandra Surnilla , Todd Anthony Rumpsa , James Alfred Hilditch , Timothy Joseph Clark , Ralph Wayne Cunningham , Julia Helen Buckland , Daniel Joseph Styles
CPC分类号： F02D41/0077 , F02D13/0265 , F02D41/0007 , F02D41/005 , F02D41/0052 , F02D41/006 , F02D41/0072 , F02D41/1439 , F02D41/144 , F02D41/1454 , F02D41/1456 , F02M26/05 , F02M26/06 , F02M35/10222 , Y02T10/22 , Y02T10/47
摘要： Methods and systems are provided for reducing EGR estimation errors during lean engine operating conditions. During lean engine operation, EGR is disabled if the estimated exhaust air-fuel ratio becomes leaner than a lean threshold. The lean threshold is adjusted based on an upper limit of EGR errors that may be tolerated by the engine at a given engine speed and load.
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公开(公告)号：US20150051762A1
公开(公告)日：2015-02-19
申请号：US13965917
申请日：2013-08-13
发明人： Adam Nathan Banker , Julia Helen Buckland , Joseph Norman Ulrey , Uros Vojko Kalabic , Matthew John Gerhart , Tobias John Pallett , Ilya Kolmanovsky , Suzanne Kay Wait
CPC分类号： B60W20/1088 , B60K6/48 , B60W10/06 , B60W10/08 , B60W20/00 , B60W2510/0628 , B60W2510/082 , B60W2510/083 , Y02T10/6221 , Y02T10/6286 , Y10S903/93
摘要： Methods and systems are provided for improving surge control. When surge conditions are approached, a reference governor reduces engine airflow at a slower rate and to a higher level than the engine airflow required to meet the reduced torque demand. The excess torque resulting from the extra airflow is offset by applying a negative torque on the driveshaft via an electric machine coupled to the engine or via alternate engine actuator adjustments.
摘要翻译： 提供了改进浪涌控制的方法和系统。 当接近喘振条件时，参考调速器以较慢的速率将发动机气流降低到比满足减小的转矩需求所需的发动机气流更高的水平。 通过经由耦合到发动机的电机或通过替代的发动机致动器调节施加负转矩来驱动由额外的气流引起的过大扭矩。
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公开(公告)号：US20150047347A1
公开(公告)日：2015-02-19
申请号：US13965952
申请日：2013-08-13
IPC分类号： F02M25/07
CPC分类号： F02M25/07 , F02B29/0437 , F02D41/0007 , F02D41/0065 , F02D2041/0067 , F02D2200/0418 , F02M26/06 , F02M26/07 , F02M26/25 , F02M26/44 , F02M26/47 , Y02T10/144 , Y02T10/148 , Y02T10/47
摘要： Methods and systems are provided for managing a compressor temperature using EGR to address surge and condensation. A variable mixture of cooled compressor recirculation flow and hot EGR is provided to a compressor inlet. A composition of the mixture is adjusted to maintain a compressor inlet temperature sufficiently warm so as to reduce ingestion of condensation, and a compressor outlet temperature sufficiently cold to be within component temperature limits with flow above the surge limit.
摘要翻译： 提供了使用EGR管理压缩机温度以解决浪涌和冷凝的方法和系统。 将冷却的压缩机再循环流和热EGR的可变混合物提供给压缩机入口。 调整混合物的组成以保持压缩机入口温度足够温暖，以便减少冷凝的摄取，并且使压缩机出口温度足够冷，以达到超过浪涌极限的流量在组分温度范围内。
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公开(公告)号：US20140060009A1
公开(公告)日：2014-03-06
申请号：US13867734
申请日：2013-04-22
发明人： Xiaogang Zhang , Jianwen James Yi , Wen Dai , Paul M. Laing , John Hedges , Julia Helen Buckland , Harold Huimin Sun
IPC分类号： F01N3/18
CPC分类号： F01N3/18 , F01N3/22 , F01N3/30 , F01N13/009 , F02B37/168 , F02B37/18 , Y02A50/2322 , Y02T10/144 , Y02T10/20
摘要： A vehicle system operation method is provided. The method comprises, during a first operating condition, increasing back pressure in a first exhaust conduit positioned upstream of a turbine and downstream of a first emission control device and during a second operating condition, reducing back pressure in the first exhaust conduit and flowing boosted air from downstream of a compressor into a second exhaust conduit positioned upstream of a second emission control device and downstream of the turbine.
摘要翻译： 提供车辆系统操作方法。 该方法包括在第一操作条件期间在位于涡轮机上游并位于第一排放控制装置下游的第一排气管道中增加背压，并且在第二操作条件期间，减小第一排气管道中的背压并使增压空气流动 从压缩机的下游到位于第二排放控制装置上游并位于涡轮下游的第二排气导管。
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