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公开(公告)号：US09903288B2
公开(公告)日：2018-02-27
申请号：US15497136
申请日：2017-04-25
CPC分类号： F02D41/0007 , F02B37/16 , F02B37/18 , F02B2039/162 , F02D41/221 , F02D2011/108 , F02D2200/0406 , Y02T10/144 , Y02T10/40
摘要： Systems and methods for determining the presence or absence of deposits that may accumulate within a compressor recirculation valve positioned in parallel with a turbocharger compressor are presented. The systems and methods adjust actuators to maintain engine operation such that it may be more difficult for a driver to become aware that a compressor recirculation valve diagnostic is being executed.
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公开(公告)号：US09890691B2
公开(公告)日：2018-02-13
申请号：US14829968
申请日：2015-08-19
CPC分类号： F02B29/0418 , F02B29/0493 , F02B37/12 , F02B37/14 , F02B39/10 , F02B2037/122 , F02D41/0007 , F02D2200/0418 , F02M35/042 , Y02T10/144 , Y02T10/146
摘要： Methods and systems for operating an engine that includes a compressor and charge air cooler are disclosed. In one example, air flow through the charge air cooler is increased in response to condensation accumulating in the charge air cooler without increasing engine torque. Air flow through the charge air cooler is increased to gradually reduce condensation within the charge air cooler.
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公开(公告)号：US20180010529A1
公开(公告)日：2018-01-11
申请号：US15204731
申请日：2016-07-07
CPC分类号： F02B39/10 , F02B39/12 , F02D23/00 , F02D41/0007 , F02D41/1497 , F02D41/26 , F02D2200/1012 , F02D2250/21 , F02P5/045 , F02P5/153 , Y02T10/144 , Y02T10/46
摘要： Systems and methods for generating auxiliary torque are provided. In one example, a method for controlling a supercharger comprises, responsive to requested torque exceeding spark authority of an engine, varying a current applied to a motor of the supercharger to provide an amount of torque to a crankshaft of the engine. In this way, a supercharger can be controlled to compensate for an engine torque shortfall.
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公开(公告)号：US20170335755A1
公开(公告)日：2017-11-23
申请号：US15160927
申请日：2016-05-20
CPC分类号： F02B37/10 , F02B37/04 , F02B37/127 , F02B37/14 , F02B37/16 , F02B37/18 , F02B39/10 , F02B2037/122 , F02B2039/168 , F02D41/0007 , F02D41/10 , F02D2200/703 , Y02T10/144
摘要： Methods and systems are provided for controlling boost pressure in a staged engine system comprising a turbocharger and an upstream electric supercharger based on altitude. During vehicle operation at higher altitudes, where vacuum availability for wastegate actuation is limited, boost pressure may be provided by operating the electric supercharger more aggressively. The wastegate may be used for boost control once the vacuum reserve is replenished.
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公开(公告)号：US09816447B2
公开(公告)日：2017-11-14
申请号：US14592759
申请日：2015-01-08
CPC分类号： F02D41/0007 , F02D41/22 , F02D41/2422 , F02D41/2464 , F02D2200/501 , Y02T10/144
摘要： Methods and systems are provided for calibrating a compressor surge line. In one example, a method may include adjusting the compressor surge line based on a vehicle speed in addition to a compressor pressure ratio. For example, at higher vehicle speeds, above a threshold vehicle speed, a less aggressive surge line calibration may be utilized in order to improve drivability while at lower vehicle speeds, below the threshold vehicle speed, a more aggressive surge line calibration may be utilized for NVH mitigation.
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公开(公告)号：US09702298B2
公开(公告)日：2017-07-11
申请号：US14565150
申请日：2014-12-09
IPC分类号： F02B33/44 , G01M15/00 , F02B37/18 , F02B37/16 , G01L27/00 , F02D41/22 , F02D41/00 , F02B37/007 , F02D41/20
CPC分类号： F02B37/183 , F02B37/007 , F02B37/16 , F02D41/0007 , F02D41/20 , F02D41/221 , F02D41/222 , F02D2200/0406 , G01L23/24 , G01L27/007 , G01M15/08 , Y02T10/144 , Y02T10/40
摘要： Methods are provided for identifying degradation in components of a compressor bypass valve (CBV). One method comprises commanding a periodic signal to the CBV and indicating degradation of a throttle of the CBV based on changes in pressure at an inlet of an intake throttle in response to the periodic signal.
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公开(公告)号：US09677481B2
公开(公告)日：2017-06-13
申请号：US14740576
申请日：2015-06-16
CPC分类号： F02D41/0007 , F02B29/04 , F02B37/127 , F02D23/00 , Y02T10/144 , Y02T10/146
摘要： Methods are provided for improving boost pressure control in a boosted engine system. In one example, in response to an operator actuated tip-in of an accelerator pedal, an air bypass around an air compressor supplying air to an air inlet of an engine may be opened for a predetermined time, and after the predetermined time, said air bypass may be increased in response to a ratio of outlet pressure to inlet pressure of said compressor being at or around a hard surge limit. In this way, by increasing the opening of the air bypass, compressor operation may be moved out of a hard/soft surge region.
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公开(公告)号：US20170138278A1
公开(公告)日：2017-05-18
申请号：US14942487
申请日：2015-11-16
IPC分类号： F02D41/00
CPC分类号： F02D41/005 , F02B37/004 , F02B37/013 , F02B2037/125 , F02D41/0005 , F02D41/0007 , F02D41/021 , F02D41/023 , Y02T10/144 , Y02T10/42
摘要： Methods and systems are provided for surge control in an engine system having multiple staged charge boosting devices. In one example, responsive to a drop in driver torque demand, compressed air is continued to be provided by operating a downstream intake compressor while accelerating an upstream compressor to reduce flow through the first compressor. By increasing the compressor pressure ratio at the first compressor via operation of the second compressor, surge is reduced without degrading boosted engine performance.
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公开(公告)号：US09631564B2
公开(公告)日：2017-04-25
申请号：US14566442
申请日：2014-12-10
CPC分类号： F02D41/0007 , F02B37/16 , F02B37/18 , F02B2039/162 , F02D41/221 , F02D2011/108 , F02D2200/0406 , Y02T10/144 , Y02T10/40
摘要： Systems and methods for determining the presence or absence of deposits that may accumulate within a compressor recirculation valve positioned in parallel with a turbocharger compressor are presented. The systems and methods adjust actuators to maintain engine operation such that it may be more difficult for a driver to become aware that a compressor recirculation valve diagnostic is being executed.
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公开(公告)号：US20170016389A1
公开(公告)日：2017-01-19
申请号：US14799342
申请日：2015-07-14
CPC分类号： F02B37/14 , F02B37/04 , F02B37/127 , F02B37/16 , F02B39/10 , F02B2037/122 , F02B2039/168 , F02D41/0007 , F02D2200/0406 , Y02T10/144
摘要： Methods and systems are provided for turbocharger speed control in an engine system having multiple staged charge boosting devices. In one example, compressed air is provided by a turbocharger compressor until a turbocharger speed reaches a limit. Thereafter, a compressor of a downstream supercharger is operated to share the load
摘要翻译： 在具有多个分段充电增压装置的发动机系统中提供了用于涡轮增压器速度控制的方法和系统。 在一个示例中，压缩空气由涡轮增压器压缩机提供，直到涡轮增压器速度达到极限。 此后，操作下游增压器的压缩机以共享负载
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